merge with viewer-release

92 files changed, 5924 insertions, 10870 deletions

diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 3a4a8facc2..bf99a4c3a0 100755
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -75,8 +75,10 @@ set(llcommon_SOURCE_FILES
     llmetrics.cpp
     llmetricperformancetester.cpp
     llmortician.cpp
+    llmutex.cpp
     lloptioninterface.cpp
     llptrto.cpp 
+    llpredicate.cpp
     llprocess.cpp
     llprocessor.cpp
     llqueuedthread.cpp
@@ -90,7 +92,6 @@ set(llcommon_SOURCE_FILES
     llsdutil.cpp
     llsecondlifeurls.cpp
     llsingleton.cpp
-    llstat.cpp
     llstacktrace.cpp
     llstreamqueue.cpp
     llstreamtools.cpp
@@ -98,14 +99,15 @@ set(llcommon_SOURCE_FILES
     llstringtable.cpp
     llsys.cpp
     llthread.cpp
+    llthreadlocalstorage.cpp
     llthreadsafequeue.cpp
     lltimer.cpp
+    lltrace.cpp
+    lltracerecording.cpp
+    lltracethreadrecorder.cpp
     lluri.cpp
     lluuid.cpp
     llworkerthread.cpp
-    metaclass.cpp
-    metaproperty.cpp
-    reflective.cpp
     timing.cpp
     u64.cpp
     )
@@ -115,7 +117,6 @@ set(llcommon_HEADER_FILES
 
     bitpack.h
     ctype_workaround.h
-    doublelinkedlist.h
     fix_macros.h
     imageids.h
     indra_constants.h
@@ -129,7 +130,6 @@ set(llcommon_HEADER_FILES
     llapp.h
     llapr.h
     llassettype.h
-    llassoclist.h
     llavatarconstants.h
     llbase32.h
     llbase64.h
@@ -143,18 +143,14 @@ set(llcommon_HEADER_FILES
     llcriticaldamp.h
     llcursortypes.h
     lldarray.h
-    lldarrayptr.h
     lldate.h
     lldefs.h
     lldependencies.h
     lldeleteutils.h
     lldepthstack.h
     lldictionary.h
-    lldlinked.h
     lldoubledispatch.h
-    lldqueueptr.h
     llendianswizzle.h
-    llenum.h
     llerror.h
     llerrorcontrol.h
     llerrorlegacy.h
@@ -178,18 +174,15 @@ set(llcommon_HEADER_FILES
     llhash.h
     llheartbeat.h
     llhttpstatuscodes.h
-    llindexedqueue.h
     llinitparam.h
     llinstancetracker.h
     llkeythrottle.h
-    lllazy.h
     llleap.h
     llleaplistener.h
     lllistenerwrapper.h
     lllinkedqueue.h
     llliveappconfig.h
     lllivefile.h
-    lllocalidhashmap.h
     lllog.h
     lllslconstants.h
     llmap.h
@@ -199,15 +192,15 @@ set(llcommon_HEADER_FILES
     llmetrics.h
     llmetricperformancetester.h
     llmortician.h
+    llmutex.h
     llnametable.h
     lloptioninterface.h
     llpointer.h
+    llpredicate.h
     llpreprocessor.h
     llpriqueuemap.h
     llprocess.h
     llprocessor.h
-    llptrskiplist.h
-    llptrskipmap.h
     llptrto.h
     llqueuedthread.h
     llrand.h
@@ -224,12 +217,7 @@ set(llcommon_HEADER_FILES
     llsecondlifeurls.h
     llsimplehash.h
     llsingleton.h
-    llskiplist.h
-    llskipmap.h
-    llsortedvector.h
-    llstack.h
     llstacktrace.h
-    llstat.h
     llstatenums.h
     llstl.h
     llstreamqueue.h
@@ -239,22 +227,21 @@ set(llcommon_HEADER_FILES
     llstringtable.h
     llsys.h
     llthread.h
+    llthreadlocalstorage.h
     llthreadsafequeue.h
     lltimer.h
+    lltrace.h
+    lltracerecording.h
+    lltracethreadrecorder.h
     lltreeiterators.h
-    lltypeinfolookup.h
+    llunit.h
     lluri.h
     lluuid.h
-    lluuidhashmap.h
     llversionserver.h
+	llwin32headers.h
+    llwin32headerslean.h
     llworkerthread.h
     ll_template_cast.h
-    metaclass.h
-    metaclasst.h
-    metaproperty.h
-    metapropertyt.h
-    reflective.h
-    reflectivet.h
     roles_constants.h
     stdenums.h
     stdtypes.h
@@ -326,7 +313,6 @@ if (LL_TESTS)
   LL_ADD_INTEGRATION_TEST(llerror "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llframetimer "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llinstancetracker "" "${test_libs}")
-  LL_ADD_INTEGRATION_TEST(lllazy "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llprocessor "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llrand "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llsdserialize "" "${test_libs}")
@@ -334,7 +320,7 @@ if (LL_TESTS)
   LL_ADD_INTEGRATION_TEST(llstring "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lltreeiterators "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lluri "" "${test_libs}")
-  LL_ADD_INTEGRATION_TEST(reflection "" "${test_libs}")
+  LL_ADD_INTEGRATION_TEST(llunits "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(stringize "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lleventdispatcher "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lleventcoro "" "${test_libs};${BOOST_CONTEXT_LIBRARY}")
diff --git a/indra/llcommon/doublelinkedlist.h b/indra/llcommon/doublelinkedlist.h
deleted file mode 100755
index 0aeaa69df3..0000000000
--- a/indra/llcommon/doublelinkedlist.h
+++ /dev/null
@@ -1,1397 +0,0 @@
-/** 
- * @file doublelinkedlist.h
- * @brief Provides a standard doubly linked list for fun and profit.
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_DOUBLELINKEDLIST_H
-#define LL_DOUBLELINKEDLIST_H
-
-#include "llerror.h"
-#include "llrand.h"
-
-// node that actually contains the data
-template <class DATA_TYPE> class LLDoubleLinkedNode
-{
-public:
-	DATA_TYPE			*mDatap;
-	LLDoubleLinkedNode	*mNextp;
-	LLDoubleLinkedNode	*mPrevp;
-
-
-public:
-	// assign the mDatap pointer
-	LLDoubleLinkedNode(DATA_TYPE *data);
-
-	// destructor does not, by default, destroy associated data
-	// however, the mDatap must be NULL to ensure that we aren't causing memory leaks
-	~LLDoubleLinkedNode();
-
-	// delete associated data and NULL out pointer
-	void deleteData();
-
-	// remove associated data and NULL out pointer
-	void removeData();
-};
-
-
-const U32 LLDOUBLE_LINKED_LIST_STATE_STACK_DEPTH = 4;
-
-template <class DATA_TYPE> class LLDoubleLinkedList
-{
-private:
-	LLDoubleLinkedNode<DATA_TYPE> mHead;		// head node
-	LLDoubleLinkedNode<DATA_TYPE> mTail;		// tail node
-	LLDoubleLinkedNode<DATA_TYPE> *mQueuep;		// The node in the batter's box
-	LLDoubleLinkedNode<DATA_TYPE> *mCurrentp;	// The node we're talking about
-
-	// The state stack allows nested exploration of the LLDoubleLinkedList
-	// but should be used with great care
-	LLDoubleLinkedNode<DATA_TYPE> *mQueuepStack[LLDOUBLE_LINKED_LIST_STATE_STACK_DEPTH];
-	LLDoubleLinkedNode<DATA_TYPE> *mCurrentpStack[LLDOUBLE_LINKED_LIST_STATE_STACK_DEPTH];
-	U32 mStateStackDepth;
-	U32	mCount;
-
-	// mInsertBefore is a pointer to a user-set function that returns 
-	// TRUE if "first" should be located before "second"
-	// NOTE: mInsertBefore() should never return TRUE when ("first" == "second")
-	// or never-ending loops can occur
-	BOOL				(*mInsertBefore)(DATA_TYPE *first, DATA_TYPE *second);	
-																				
-public:
-	LLDoubleLinkedList();
-
-	// destructor destroys list and nodes, but not data in nodes
-	~LLDoubleLinkedList();
-
-	// put data into a node and stick it at the front of the list
-	// set mCurrentp to mQueuep
-	void addData(DATA_TYPE *data);
-
-	// put data into a node and stick it at the end of the list
-	// set mCurrentp to mQueuep
-	void addDataAtEnd(DATA_TYPE *data);
-
-	S32 getLength() const;
-	// search the list starting at mHead.mNextp and remove the link with mDatap == data
-	// set mCurrentp to mQueuep
-	// return TRUE if found, FALSE if not found
-	BOOL removeData(const DATA_TYPE *data);
-
-	// search the list starting at mHead.mNextp and delete the link with mDatap == data
-	// set mCurrentp to mQueuep
-	// return TRUE if found, FALSE if not found
-	BOOL deleteData(DATA_TYPE *data);
-
-	// remove all nodes from the list and delete the associated data
-	void deleteAllData();
-
-	// remove all nodes from the list but do not delete data
-	void removeAllNodes();
-
-	BOOL isEmpty();
-
-	// check to see if data is in list
-	// set mCurrentp and mQueuep to the target of search if found, otherwise set mCurrentp to mQueuep
-	// return TRUE if found, FALSE if not found
-	BOOL	checkData(const DATA_TYPE *data);
-
-	// NOTE: This next two funtions are only included here 
-	// for those too familiar with the LLLinkedList template class.
-	// They are depreciated.  resetList() is unecessary while 
-	// getCurrentData() is identical to getNextData() and has
-	// a misleading name.
-	//
-	// The recommended way to loop through a list is as follows:
-	//
-	// datap = list.getFirstData();
-	// while (datap)
-	// {
-	//     /* do stuff */
-	//     datap = list.getNextData();
-	// }
-
-		// place mQueuep on mHead node
-		void resetList();
-	
-		// return the data currently pointed to, 
-		// set mCurrentp to that node and bump mQueuep down the list
-		// NOTE: this function is identical to getNextData()
-		DATA_TYPE *getCurrentData();
-
-
-	// reset the list and return the data currently pointed to, 
-	// set mCurrentp to that node and bump mQueuep down the list
-	DATA_TYPE *getFirstData();
-
-
-	// reset the list and return the data at position n, set mCurentp 
-	// to that node and bump mQueuep down the list
-	// Note: n=0 will behave like getFirstData()
-	DATA_TYPE *getNthData(U32 n);
-
-	// reset the list and return the last data in it, 
-	// set mCurrentp to that node and bump mQueuep up the list
-	DATA_TYPE *getLastData();
-
-	// return data in mQueuep,
-	// set mCurrentp mQueuep and bump mQueuep down the list
-	DATA_TYPE *getNextData();
-
-	// return the data in mQueuep, 
-	// set mCurrentp to mQueuep and bump mQueuep up the list
-	DATA_TYPE *getPreviousData();
-
-	// remove the Node at mCurrentp
-	// set mCurrentp to mQueuep
-	void removeCurrentData();
-
-	// delete the Node at mCurrentp
-	// set mCurrentp to mQueuep
-	void deleteCurrentData();
-
-	// remove the Node at mCurrentp and insert it into newlist
-	// set mCurrentp to mQueuep
-	void moveCurrentData(LLDoubleLinkedList<DATA_TYPE> *newlist);
-
-	// insert the node in front of mCurrentp
-	// set mCurrentp to mQueuep
-	void insertNode(LLDoubleLinkedNode<DATA_TYPE> *node);
-
-	// insert the data in front of mCurrentp
-	// set mCurrentp to mQueuep
-	void insertData(DATA_TYPE *data);
-
-	// if mCurrentp has a previous node then :
-	//   * swaps mCurrentp with its previous
-	//   * set mCurrentp to mQueuep
-	//     (convenient for forward bubble-sort)
-	// otherwise does nothing
-	void swapCurrentWithPrevious();
-
-	// if mCurrentp has a next node then :
-	//   * swaps mCurrentp with its next
-	//   * set mCurrentp to mQueuep
-	//     (convenient for backwards bubble-sort)
-	// otherwise does nothing
-	void swapCurrentWithNext();
-
-	// move mCurrentp to the front of the list
-	// set mCurrentp to mQueuep
-	void moveCurrentToFront();
-	
-	// move mCurrentp to the end of the list
-	// set mCurrentp to mQueuep
-	void moveCurrentToEnd();
-
-	// set mInsertBefore
-	void setInsertBefore(BOOL (*insert_before)(DATA_TYPE *first, DATA_TYPE *second));
-
-	// add data in front of first node for which mInsertBefore(datap, node->mDatap) returns TRUE
-	// set mCurrentp to mQueuep
-	BOOL addDataSorted(DATA_TYPE *datap);
-
-	// sort the list using bubble-sort
-	// Yes, this is a different name than the same function in LLLinkedList.
-	// When it comes time for a name consolidation hopefully this one will win.
-	BOOL bubbleSort();
-
-	// does a single bubble sort pass on the list
-	BOOL lazyBubbleSort();
-
-	// returns TRUE if state successfully pushed (state stack not full)
-	BOOL pushState();
-
-	// returns TRUE if state successfully popped (state stack not empty)
-	BOOL popState();
-
-	// empties the state stack
-	void clearStateStack();
-
-	// randomly move the the links in the list for debug or (Discordian) purposes
-	// sets mCurrentp and mQueuep to top of list
-	void scramble();
-
-private:
-	// add node to beginning of list
-	// set mCurrentp to mQueuep
-	void addNode(LLDoubleLinkedNode<DATA_TYPE> *node);
-
-	// add node to end of list
-	// set mCurrentp to mQueuep
-	void addNodeAtEnd(LLDoubleLinkedNode<DATA_TYPE> *node);
-};
-
-//#endif
-
-////////////////////////////////////////////////////////////////////////////////////////////
-
-// doublelinkedlist.cpp
-// LLDoubleLinkedList template class implementation file.
-// Provides a standard doubly linked list for fun and profit.
-// 
-// Copyright 2001, Linden Research, Inc.
-
-//#include "llerror.h"
-//#include "doublelinkedlist.h"
-
-//////////////////////////////////////////////////////////////////////////////////////////
-// LLDoubleLinkedNode
-//////////////////////////////////////////////////////////////////////////////////////////
-
-
-// assign the mDatap pointer
-template <class DATA_TYPE>
-LLDoubleLinkedNode<DATA_TYPE>::LLDoubleLinkedNode(DATA_TYPE *data) : 
-	mDatap(data), mNextp(NULL), mPrevp(NULL)
-{
-}
-
-
-// destructor does not, by default, destroy associated data
-// however, the mDatap must be NULL to ensure that we aren't causing memory leaks
-template <class DATA_TYPE>
-LLDoubleLinkedNode<DATA_TYPE>::~LLDoubleLinkedNode()
-{
-	if (mDatap)
-	{
-		llerror("Attempting to call LLDoubleLinkedNode destructor with a non-null mDatap!", 1);
-	}
-}
-
-
-// delete associated data and NULL out pointer
-template <class DATA_TYPE>
-void LLDoubleLinkedNode<DATA_TYPE>::deleteData()
-{
-	delete mDatap;
-	mDatap = NULL;
-}
-
-
-template <class DATA_TYPE>
-void LLDoubleLinkedNode<DATA_TYPE>::removeData()
-{
-	mDatap = NULL;
-}
-
-
-//////////////////////////////////////////////////////////////////////////////////////
-// LLDoubleLinkedList
-//////////////////////////////////////////////////////////////////////////////////////
-
-//                                   <------- up -------
-//
-//                                               mCurrentp
-//                                   mQueuep         |
-//                                      |            |
-//                                      |            | 
-//                      .------.     .------.     .------.      .------.
-//                      |      |---->|      |---->|      |----->|      |-----> NULL
-//           NULL <-----|      |<----|      |<----|      |<-----|      |
-//                     _'------'     '------'     '------'      '------:_
-//             .------. /|               |             |               |\ .------.
-//  NULL <-----|mHead |/                 |         mQueuep               \|mTail |-----> NULL
-//             |      |               mCurrentp                           |      |
-//             '------'                                                   '------'
-//                               -------- down --------->
-
-template <class DATA_TYPE>
-LLDoubleLinkedList<DATA_TYPE>::LLDoubleLinkedList()
-: mHead(NULL), mTail(NULL), mQueuep(NULL)
-{
-	mCurrentp = mHead.mNextp;
-	mQueuep = mHead.mNextp;
-	mStateStackDepth = 0;
-	mCount = 0;
-	mInsertBefore = NULL;
-}
-
-
-// destructor destroys list and nodes, but not data in nodes
-template <class DATA_TYPE>
-LLDoubleLinkedList<DATA_TYPE>::~LLDoubleLinkedList()
-{
-	removeAllNodes();
-}
-
-
-// put data into a node and stick it at the front of the list
-// doesn't change mCurrentp nor mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::addData(DATA_TYPE *data)
-{
-	// don't allow NULL to be passed to addData
-	if (!data)
-	{
-		llerror("NULL pointer passed to LLDoubleLinkedList::addData()", 0);
-	}
-
-	// make the new node
-	LLDoubleLinkedNode<DATA_TYPE> *temp = new LLDoubleLinkedNode<DATA_TYPE> (data);
-
-	// add the node to the front of the list
-	temp->mPrevp = NULL; 
-	temp->mNextp = mHead.mNextp;
-	mHead.mNextp = temp;
-
-	// if there's something in the list, fix its back pointer
-	if (temp->mNextp)
-	{
-		temp->mNextp->mPrevp = temp;
-	}
-	// otherwise, fix the tail of the list
-	else 
-	{
-		mTail.mPrevp = temp;
-	}
-
-	mCount++;
-}
-
-
-// put data into a node and stick it at the end of the list
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::addDataAtEnd(DATA_TYPE *data)
-{
-	// don't allow NULL to be passed to addData
-	if (!data)
-	{
-		llerror("NULL pointer passed to LLDoubleLinkedList::addData()", 0);
-	}
-
-	// make the new node
-	LLDoubleLinkedNode<DATA_TYPE> *nodep = new LLDoubleLinkedNode<DATA_TYPE>(data);
-
-	addNodeAtEnd(nodep);
-	mCount++;
-}
-
-
-// search the list starting at mHead.mNextp and remove the link with mDatap == data
-// set mCurrentp to mQueuep, or NULL if mQueuep points to node with mDatap == data
-// return TRUE if found, FALSE if not found
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::removeData(const DATA_TYPE *data)
-{
-	BOOL b_found = FALSE;
-	// don't allow NULL to be passed to addData
-	if (!data)
-	{
-		llerror("NULL pointer passed to LLDoubleLinkedList::removeData()", 0);
-	}
-
-	mCurrentp = mHead.mNextp;
-
-	while (mCurrentp)
-	{
-		if (mCurrentp->mDatap == data)
-		{
-			b_found = TRUE;
-
-			// if there is a next one, fix it
-			if (mCurrentp->mNextp)
-			{
-				mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-			}
-			else // we are at end of list
-			{
-				mTail.mPrevp = mCurrentp->mPrevp;
-			}
-
-			// if there is a previous one, fix it
-			if (mCurrentp->mPrevp)
-			{
-				mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-			}
-			else // we are at beginning of list
-			{
-				mHead.mNextp = mCurrentp->mNextp;
-			}
-
-			// remove the node
-			mCurrentp->removeData();
-			delete mCurrentp;
-			mCount--;
-			break;
-		}
-		mCurrentp = mCurrentp->mNextp; 
-	}
-
-	// reset the list back to where it was
-	if (mCurrentp == mQueuep)
-	{
-		mCurrentp = mQueuep = NULL;
-	}
-	else
-	{
-		mCurrentp = mQueuep;
-	}
-
-	return b_found;
-}
-
-
-// search the list starting at mHead.mNextp and delete the link with mDatap == data
-// set mCurrentp to mQueuep, or NULL if mQueuep points to node with mDatap == data
-// return TRUE if found, FALSE if not found
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::deleteData(DATA_TYPE *data)
-{
-	BOOL b_found = FALSE;
-	// don't allow NULL to be passed to addData
-	if (!data)
-	{
-		llerror("NULL pointer passed to LLDoubleLinkedList::deleteData()", 0);
-	}
-
-	mCurrentp = mHead.mNextp;
-
-	while (mCurrentp)
-	{
-		if (mCurrentp->mDatap == data)
-		{
-			b_found = TRUE;
-
-			// if there is a next one, fix it
-			if (mCurrentp->mNextp)
-			{
-				mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-			}
-			else // we are at end of list
-			{
-				mTail.mPrevp = mCurrentp->mPrevp;
-			}
-
-			// if there is a previous one, fix it
-			if (mCurrentp->mPrevp)
-			{
-				mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-			}
-			else // we are at beginning of list
-			{
-				mHead.mNextp = mCurrentp->mNextp;
-			}
-
-			// remove the node
-			mCurrentp->deleteData();
-			delete mCurrentp;
-			mCount--;
-			break;
-		}
-		mCurrentp = mCurrentp->mNextp;
-	}
-
-	// reset the list back to where it was
-	if (mCurrentp == mQueuep)
-	{
-		mCurrentp = mQueuep = NULL;
-	}
-	else
-	{
-		mCurrentp = mQueuep;
-	}
-
-	return b_found;
-}
-
-
-// remove all nodes from the list and delete the associated data
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::deleteAllData()
-{
-	mCurrentp = mHead.mNextp;
-
-	while (mCurrentp)
-	{
-		mQueuep = mCurrentp->mNextp;
-		mCurrentp->deleteData();
-		delete mCurrentp;
-		mCurrentp = mQueuep;
-	}
-
-	// reset mHead and mQueuep
-	mHead.mNextp = NULL;
-	mTail.mPrevp = NULL;
-	mCurrentp = mHead.mNextp;
-	mQueuep = mHead.mNextp;
-	mStateStackDepth = 0;
-	mCount = 0;
-}
-
-
-// remove all nodes from the list but do not delete associated data
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::removeAllNodes()
-{
-	mCurrentp = mHead.mNextp;
-
-	while (mCurrentp)
-	{
-		mQueuep = mCurrentp->mNextp;
-		mCurrentp->removeData();
-		delete mCurrentp;
-		mCurrentp = mQueuep;
-	}
-
-	// reset mHead and mCurrentp
-	mHead.mNextp = NULL;
-	mTail.mPrevp = NULL;
-	mCurrentp = mHead.mNextp;
-	mQueuep = mHead.mNextp;
-	mStateStackDepth = 0;
-	mCount = 0;
-}
-
-template <class DATA_TYPE>
-S32 LLDoubleLinkedList<DATA_TYPE>::getLength() const
-{
-//	U32	length = 0;
-//	for (LLDoubleLinkedNode<DATA_TYPE>* temp = mHead.mNextp; temp != NULL; temp = temp->mNextp)
-//	{
-//		length++;
-//	}
-	return mCount;
-}
-
-// check to see if data is in list
-// set mCurrentp and mQueuep to the target of search if found, otherwise set mCurrentp to mQueuep
-// return TRUE if found, FALSE if not found
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::checkData(const DATA_TYPE *data)
-{
-	mCurrentp = mHead.mNextp;
-
-	while (mCurrentp)
-	{
-		if (mCurrentp->mDatap == data)
-		{
-			mQueuep = mCurrentp;
-			return TRUE;
-		}
-		mCurrentp = mCurrentp->mNextp;
-	}
-
-	mCurrentp = mQueuep;
-	return FALSE;
-}
-
-// NOTE: This next two funtions are only included here 
-// for those too familiar with the LLLinkedList template class.
-// They are depreciated.  resetList() is unecessary while 
-// getCurrentData() is identical to getNextData() and has
-// a misleading name.
-//
-// The recommended way to loop through a list is as follows:
-//
-// datap = list.getFirstData();
-// while (datap)
-// {
-//     /* do stuff */
-//     datap = list.getNextData();
-// }
-
-	// place mCurrentp and mQueuep on first node
-	template <class DATA_TYPE>
-	void LLDoubleLinkedList<DATA_TYPE>::resetList()
-	{
-		mCurrentp = mHead.mNextp;
-		mQueuep = mHead.mNextp;
-		mStateStackDepth = 0;
-	}
-	
-	
-	// return the data currently pointed to, 
-	// set mCurrentp to that node and bump mQueuep down the list
-	template <class DATA_TYPE>
-	DATA_TYPE* LLDoubleLinkedList<DATA_TYPE>::getCurrentData()
-	{
-		if (mQueuep)
-		{
-			mCurrentp = mQueuep;
-			mQueuep = mQueuep->mNextp;
-			return mCurrentp->mDatap;
-		}
-		else
-		{
-			return NULL;
-		}
-	}
-
-
-// reset the list and return the data currently pointed to, 
-// set mCurrentp to that node and bump mQueuep down the list
-template <class DATA_TYPE>
-DATA_TYPE* LLDoubleLinkedList<DATA_TYPE>::getFirstData()
-{
-	mQueuep = mHead.mNextp;
-	mCurrentp = mQueuep;
-	if (mQueuep)
-	{
-		mQueuep = mQueuep->mNextp;
-		return mCurrentp->mDatap;
-	}
-	else
-	{
-		return NULL;
-	}
-}
-
-
-// reset the list and return the data at position n, set mCurentp 
-// to that node and bump mQueuep down the list
-// Note: n=0 will behave like getFirstData()
-template <class DATA_TYPE>
-DATA_TYPE* LLDoubleLinkedList<DATA_TYPE>::getNthData(U32 n)
-{
-	mCurrentp = mHead.mNextp;
-
-	if (mCurrentp)
-	{
-		for (U32 i=0; i<n; i++)
-		{
-			mCurrentp = mCurrentp->mNextp;
-			if (!mCurrentp)
-			{
-				break;
-			}		
-		}
-	}
-
-	if (mCurrentp)
-	{
-		// bump mQueuep down the list
-		mQueuep = mCurrentp->mNextp;
-		return mCurrentp->mDatap;
-	}
-	else
-	{
-		mQueuep = NULL;
-		return NULL;
-	}
-}
-
-
-// reset the list and return the last data in it, 
-// set mCurrentp to that node and bump mQueuep up the list
-template <class DATA_TYPE>
-DATA_TYPE* LLDoubleLinkedList<DATA_TYPE>::getLastData()
-{
-	mQueuep = mTail.mPrevp;
-	mCurrentp = mQueuep;
-	if (mQueuep)
-	{
-		mQueuep = mQueuep->mPrevp;
-		return mCurrentp->mDatap;
-	}
-	else
-	{
-		return NULL;
-	}
-}
-
-
-// return the data in mQueuep, 
-// set mCurrentp to mQueuep and bump mQueuep down the list
-template <class DATA_TYPE>
-DATA_TYPE* LLDoubleLinkedList<DATA_TYPE>::getNextData()
-{
-	if (mQueuep)
-	{
-		mCurrentp = mQueuep;
-		mQueuep = mQueuep->mNextp;
-		return mCurrentp->mDatap;
-	}
-	else
-	{
-		return NULL;
-	}
-}
-
-
-// return the data in mQueuep, 
-// set mCurrentp to mQueuep and bump mQueuep up the list
-template <class DATA_TYPE>
-DATA_TYPE* LLDoubleLinkedList<DATA_TYPE>::getPreviousData()
-{
-	if (mQueuep)
-	{
-		mCurrentp = mQueuep;
-		mQueuep = mQueuep->mPrevp;
-		return mCurrentp->mDatap;
-	}
-	else
-	{
-		return NULL;
-	}
-}
-
-
-// remove the Node at mCurrentp
-// set mCurrentp to mQueuep, or NULL if (mCurrentp == mQueuep)
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::removeCurrentData()
-{
-	if (mCurrentp)
-	{
-		// if there is a next one, fix it
-		if (mCurrentp->mNextp)
-		{
-			mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-		}
-		else	// otherwise we are at end of list
-		{
-			mTail.mPrevp = mCurrentp->mPrevp;
-		}
-
-		// if there is a previous one, fix it
-		if (mCurrentp->mPrevp)
-		{
-			mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-		}
-		else	// otherwise we are at beginning of list
-		{
-			mHead.mNextp = mCurrentp->mNextp;
-		}
-
-		// remove the node
-		mCurrentp->removeData();
-		delete mCurrentp;
-		mCount--;
-
-		// check for redundant pointing
-		if (mCurrentp == mQueuep)
-		{
-			mCurrentp = mQueuep = NULL;
-		}
-		else
-		{
-			mCurrentp = mQueuep;
-		}
-	}
-}
-
-
-// delete the Node at mCurrentp
-// set mCurrentp to mQueuep, or NULL if (mCurrentp == mQueuep) 
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::deleteCurrentData()
-{
-	if (mCurrentp)
-	{
-		// remove the node
-		// if there is a next one, fix it
-		if (mCurrentp->mNextp)
-		{
-			mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-		}
-		else	// otherwise we are at end of list
-		{
-			mTail.mPrevp = mCurrentp->mPrevp;
-		}
-
-		// if there is a previous one, fix it
-		if (mCurrentp->mPrevp)
-		{
-			mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-		}
-		else	// otherwise we are at beginning of list
-		{
-			mHead.mNextp = mCurrentp->mNextp;
-		}
-
-		// remove the LLDoubleLinkedNode
-		mCurrentp->deleteData();
-		delete mCurrentp;
-		mCount--;
-
-		// check for redundant pointing
-		if (mCurrentp == mQueuep)
-		{
-			mCurrentp = mQueuep = NULL;
-		}
-		else
-		{
-			mCurrentp = mQueuep;
-		}
-	}
-}
-
-
-// remove the Node at mCurrentp and insert it into newlist
-// set mCurrentp to mQueuep, or NULL if (mCurrentp == mQueuep)
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::moveCurrentData(LLDoubleLinkedList<DATA_TYPE> *newlist)
-{
-	if (mCurrentp)
-	{
-		// remove the node
-		// if there is a next one, fix it
-		if (mCurrentp->mNextp)
-		{
-			mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-		}
-		else	// otherwise we are at end of list
-		{
-			mTail.mPrevp = mCurrentp->mPrevp;
-		}
-
-		// if there is a previous one, fix it
-		if (mCurrentp->mPrevp)
-		{
-			mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-		}
-		else	// otherwise we are at beginning of list
-		{
-			mHead.mNextp = mCurrentp->mNextp;
-		}
-
-		// move the node to the new list
-		newlist->addNode(mCurrentp);
-
-		// check for redundant pointing
-		if (mCurrentp == mQueuep)
-		{
-			mCurrentp = mQueuep = NULL;
-		}
-		else
-		{
-			mCurrentp = mQueuep;
-		}
-	}
-}
-
-
-// Inserts the node previous to mCurrentp
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::insertNode(LLDoubleLinkedNode<DATA_TYPE> *nodep)
-{
-	// don't allow pointer to NULL to be passed
-	if (!nodep)
-	{
-		llerror("NULL pointer passed to LLDoubleLinkedList::insertNode()", 0);
-	}
-	if (!nodep->mDatap)
-	{
-		llerror("NULL data pointer passed to LLDoubleLinkedList::insertNode()", 0);
-	}
-
-	if (mCurrentp)
-	{
-		if (mCurrentp->mPrevp)
-		{
-			nodep->mPrevp = mCurrentp->mPrevp;
-			nodep->mNextp = mCurrentp;
-			mCurrentp->mPrevp->mNextp = nodep;
-			mCurrentp->mPrevp = nodep;
-		}
-		else	// at beginning of list
-		{
-			nodep->mPrevp = NULL;
-			nodep->mNextp = mCurrentp;
-			mHead.mNextp = nodep;
-			mCurrentp->mPrevp = nodep;
-		}
-		mCurrentp = mQueuep;
-	}
-	else	// add to front of list
-	{
-		addNode(nodep);
-	}
-}
-
-
-// insert the data in front of mCurrentp
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::insertData(DATA_TYPE *data)
-{
-	if (!data)
-	{
-		llerror("NULL data pointer passed to LLDoubleLinkedList::insertNode()", 0);
-	}
-	LLDoubleLinkedNode<DATA_TYPE> *node = new LLDoubleLinkedNode<DATA_TYPE>(data);
-	insertNode(node);
-	mCount++;
-}
-
-
-// if mCurrentp has a previous node then :
-//   * swaps mCurrentp with its previous
-//   * set mCurrentp to mQueuep
-// otherwise does nothing
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::swapCurrentWithPrevious()
-{
-	if (mCurrentp)
-	{
-		if (mCurrentp->mPrevp)
-		{
-			// Pull mCurrentp out of list
-			mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-			if (mCurrentp->mNextp)
-			{
-				mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-			}
-			else 	// mCurrentp was at end of list
-			{
-				mTail.mPrevp = mCurrentp->mPrevp;
-			}
-
-			// Fix mCurrentp's pointers
-			mCurrentp->mNextp = mCurrentp->mPrevp;
-			mCurrentp->mPrevp = mCurrentp->mNextp->mPrevp;
-			mCurrentp->mNextp->mPrevp = mCurrentp;
-
-			if (mCurrentp->mPrevp)
-			{
-				// Fix the backward pointer of mCurrentp's new previous
-				mCurrentp->mPrevp->mNextp = mCurrentp;
-			}
-			else	// mCurrentp is now at beginning of list
-			{
-				mHead.mNextp = mCurrentp;
-			}
-
-			// Set the list back to the way it was
-			mCurrentp = mQueuep;
-		}
-	}
-}
-
-
-// if mCurrentp has a next node then :
-//   * swaps mCurrentp with its next
-//   * set mCurrentp to mQueuep
-// otherwise does nothing
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::swapCurrentWithNext()
-{
-	if (mCurrentp)
-	{
-		if (mCurrentp->mNextp)
-		{
-			// Pull mCurrentp out of list
-			mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-			if (mCurrentp->mPrevp)
-			{
-				mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-			}
-			else 	// mCurrentp was at beginning of list
-			{
-				mHead.mNextp = mCurrentp->mNextp;
-			}
-
-			// Fix mCurrentp's pointers
-			mCurrentp->mPrevp = mCurrentp->mNextp;
-			mCurrentp->mNextp = mCurrentp->mPrevp->mNextp;
-			mCurrentp->mPrevp->mNextp = mCurrentp;
-
-			if (mCurrentp->mNextp)
-			{
-				// Fix the back pointer of mCurrentp's new next
-				mCurrentp->mNextp->mPrevp = mCurrentp;
-			}
-			else 	// mCurrentp is now at end of list
-			{
-				mTail.mPrevp = mCurrentp;
-			}
-			
-			// Set the list back to the way it was
-			mCurrentp = mQueuep;
-		}
-	}
-}
-
-// move mCurrentp to the front of the list
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::moveCurrentToFront()
-{
-	if (mCurrentp)
-	{
-		// if there is a previous one, fix it
-		if (mCurrentp->mPrevp)
-		{
-			mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-		}
-		else	// otherwise we are at beginning of list
-		{
-			// check for redundant pointing
-			if (mCurrentp == mQueuep)
-			{
-				mCurrentp = mQueuep = NULL;
-			}
-			else
-			{
-				mCurrentp = mQueuep;
-			}
-			return;
-		}
-
-		// if there is a next one, fix it
-		if (mCurrentp->mNextp)
-		{
-			mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-		}
-		else	// otherwise we are at end of list
-		{
-			mTail.mPrevp = mCurrentp->mPrevp;
-		}
-
-		// add mCurrentp to beginning of list
-		mCurrentp->mNextp = mHead.mNextp;
-		mHead.mNextp->mPrevp = mCurrentp;	// mHead.mNextp MUST be valid, 
-											// or the list had only one node
-											// and we would have returned already
-		mCurrentp->mPrevp = NULL;
-		mHead.mNextp = mCurrentp;
-
-		// check for redundant pointing
-		if (mCurrentp == mQueuep)
-		{
-			mCurrentp = mQueuep = NULL;
-		}
-		else
-		{
-			mCurrentp = mQueuep;
-		}
-	}
-
-}
-
-// move mCurrentp to the end of the list
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::moveCurrentToEnd()
-{
-	if (mCurrentp)
-	{
-		// if there is a next one, fix it
-		if (mCurrentp->mNextp)
-		{
-			mCurrentp->mNextp->mPrevp = mCurrentp->mPrevp;
-		}
-		else	// otherwise we are at end of list and we're done
-		{
-			// check for redundant pointing
-			if (mCurrentp == mQueuep)
-			{
-				mCurrentp = mQueuep = NULL;
-			}
-			else
-			{
-				mCurrentp = mQueuep;
-			}
-			return;
-		}
-
-		// if there is a previous one, fix it
-		if (mCurrentp->mPrevp)
-		{
-			mCurrentp->mPrevp->mNextp = mCurrentp->mNextp;
-		}
-		else	// otherwise we are at beginning of list
-		{
-			mHead.mNextp = mCurrentp->mNextp;
-		}
-
-		// add mCurrentp to end of list
-		mCurrentp->mPrevp = mTail.mPrevp;
-		mTail.mPrevp->mNextp = mCurrentp;	// mTail.mPrevp MUST be valid, 
-											// or the list had only one node
-											// and we would have returned already
-		mCurrentp->mNextp = NULL;
-		mTail.mPrevp = mCurrentp;
-
-		// check for redundant pointing
-		if (mCurrentp == mQueuep)
-		{
-			mCurrentp = mQueuep = NULL;
-		}
-		else
-		{
-			mCurrentp = mQueuep;
-		}
-	}
-}
-
-
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::setInsertBefore(BOOL (*insert_before)(DATA_TYPE *first, DATA_TYPE *second) )
-{
-	mInsertBefore = insert_before;
-}
-
-
-// add data in front of the first node for which mInsertBefore(datap, node->mDatap) returns TRUE
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::addDataSorted(DATA_TYPE *datap)
-{
-	// don't allow NULL to be passed to addData()
-	if (!datap)
-	{
-		llerror("NULL pointer passed to LLDoubleLinkedList::addDataSorted()", 0);
-	}
-
-	// has mInsertBefore not been set?
-	if (!mInsertBefore)
-	{
-		addData(datap);
-		return FALSE;
-	}
-
-	// is the list empty?
-	if (!mHead.mNextp)
-	{
-		addData(datap);
-		return TRUE;
-	}
-
-	// Note: this step has been added so that the behavior of LLDoubleLinkedList
-	// is as rigorous as the LLLinkedList class about adding duplicate nodes.
-	// Duplicate nodes can cause a problem when sorting if mInsertBefore(foo, foo) 
-	// returns TRUE.  However, if mInsertBefore(foo, foo) returns FALSE, then there 
-	// shouldn't be any reason to exclude duplicate nodes (as we do here).
-	if (checkData(datap))
-	{
-		return FALSE;
-	}
-	
-	mCurrentp = mHead.mNextp;
-	while (mCurrentp)
-	{
-		// check to see if datap is already in the list
-		if (datap == mCurrentp->mDatap)
-		{
-			return FALSE;
-		}
-		else if (mInsertBefore(datap, mCurrentp->mDatap))
-		{
-			insertData(datap);
-			return TRUE;
-		}
-		mCurrentp = mCurrentp->mNextp;
-	}
-	
-	addDataAtEnd(datap);
-	return TRUE;
-}
-
-
-// bubble-sort until sorted and return TRUE if anything was sorted
-// leaves mQueuep pointing at last node that was swapped with its mNextp
-//
-// NOTE: if you find this function looping for really long times, then you
-// probably need to check your implementation of mInsertBefore(a,b) and make 
-// sure it does not return TRUE when (a == b)!
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::bubbleSort()
-{
-	BOOL b_swapped = FALSE;
-	U32 count = 0;
-	while (lazyBubbleSort()) 
-	{
-		b_swapped = TRUE;
-		if (count++ > 0x7FFFFFFF)
-		{
-			llwarning("LLDoubleLinkedList::bubbleSort() : too many passes...", 1);
-			llwarning("    make sure the mInsertBefore(a, b) does not return TRUE for a == b", 1);
-			break;
-		}
-	}
-	return b_swapped;
-}
-
-
-// do a single bubble-sort pass and return TRUE if anything was sorted
-// leaves mQueuep pointing at last node that was swapped with its mNextp
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::lazyBubbleSort()
-{
-	// has mInsertBefore been set?
-	if (!mInsertBefore)
-	{
-		return FALSE;
-	}
-
-	// is list empty?
-	mCurrentp = mHead.mNextp;
-	if (!mCurrentp)
-	{
-		return FALSE;
-	}
-
-	BOOL b_swapped = FALSE;
-
-	// the sort will exit after 0x7FFFFFFF nodes or the end of the list, whichever is first
-	S32  length = 0x7FFFFFFF;
-	S32  count = 0;
-
-	while (mCurrentp  &&  mCurrentp->mNextp  &&  count<length)
-	{
-		if (mInsertBefore(mCurrentp->mNextp->mDatap, mCurrentp->mDatap))
-		{
-			b_swapped = TRUE;
-			mQueuep = mCurrentp;
-			swapCurrentWithNext();	// sets mCurrentp to mQueuep
-		}
-		count++;
-		mCurrentp = mCurrentp->mNextp;
-	}
-	
-	return b_swapped;
-}
-
-
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::pushState()
-{
-	if (mStateStackDepth < LLDOUBLE_LINKED_LIST_STATE_STACK_DEPTH)
-	{
-		*(mQueuepStack + mStateStackDepth) = mQueuep;
-		*(mCurrentpStack + mStateStackDepth) = mCurrentp;
-		mStateStackDepth++;
-		return TRUE;
-	}
-	return FALSE;
-}
-
-
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::popState()
-{
-	if (mStateStackDepth > 0)
-	{
-		mStateStackDepth--;
-		mQueuep = *(mQueuepStack + mStateStackDepth);
-		mCurrentp = *(mCurrentpStack + mStateStackDepth);
-		return TRUE;
-	}
-	return FALSE;
-}
-
-
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::clearStateStack()
-{
-	mStateStackDepth = 0;
-}
-
-//////////////////////////////////////////////////////////////////////////////////////////
-// private members
-//////////////////////////////////////////////////////////////////////////////////////////
-
-// add node to beginning of list
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::addNode(LLDoubleLinkedNode<DATA_TYPE> *nodep)
-{
-	// add the node to the front of the list
-	nodep->mPrevp = NULL;
-	nodep->mNextp = mHead.mNextp;
-	mHead.mNextp = nodep;
-
-	// if there's something in the list, fix its back pointer
-	if (nodep->mNextp)
-	{
-		nodep->mNextp->mPrevp = nodep;
-	}
-	else	// otherwise fix the tail node
-	{
-		mTail.mPrevp = nodep;
-	}
-
-	mCurrentp = mQueuep;
-}
-
-
-// add node to end of list
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::addNodeAtEnd(LLDoubleLinkedNode<DATA_TYPE> *node)
-{
-	// add the node to the end of the list
-	node->mNextp = NULL;
-	node->mPrevp = mTail.mPrevp;
-	mTail.mPrevp = node;
-
-	// if there's something in the list, fix its back pointer
-	if (node->mPrevp)
-	{
-		node->mPrevp->mNextp = node;
-	}
-	else	// otherwise fix the head node
-	{
-		mHead.mNextp = node;
-	}
-
-	mCurrentp = mQueuep;
-}
-
-
-// randomly move nodes in the list for DEBUG (or Discordian) purposes
-// sets mCurrentp and mQueuep to top of list
-template <class DATA_TYPE>
-void LLDoubleLinkedList<DATA_TYPE>::scramble()
-{
-	S32 random_number;
-	DATA_TYPE *datap = getFirstData();
-	while(datap)
-	{
-		random_number = ll_rand(5);
-
-		if (0 == random_number)
-		{
-			removeCurrentData();
-			addData(datap);
-		}
-		else if (1 == random_number)
-		{
-			removeCurrentData();
-			addDataAtEnd(datap);
-		}
-		else if (2 == random_number)
-		{
-			swapCurrentWithPrevious();
-		}
-		else if (3 == random_number)
-		{
-			swapCurrentWithNext();
-		}
-		datap = getNextData();
-	}
-	mQueuep = mHead.mNextp;
-	mCurrentp = mQueuep;
-}
-
-template <class DATA_TYPE>
-BOOL LLDoubleLinkedList<DATA_TYPE>::isEmpty()
-{
-	return (mCount == 0);
-}
-
-
-#endif
diff --git a/indra/llcommon/llapr.cpp b/indra/llcommon/llapr.cpp
index d1c44c9403..47fa70614f 100755
--- a/indra/llcommon/llapr.cpp
+++ b/indra/llcommon/llapr.cpp
@@ -29,6 +29,7 @@
 #include "linden_common.h"
 #include "llapr.h"
 #include "apr_dso.h"
+#include "llthreadlocalstorage.h"
 
 apr_pool_t *gAPRPoolp = NULL; // Global APR memory pool
 LLVolatileAPRPool *LLAPRFile::sAPRFilePoolp = NULL ; //global volatile APR memory pool.
@@ -37,12 +38,15 @@ apr_thread_mutex_t *gCallStacksLogMutexp = NULL;
 
 const S32 FULL_VOLATILE_APR_POOL = 1024 ; //number of references to LLVolatileAPRPool
 
+bool gAPRInitialized = false;
+
 void ll_init_apr()
 {
+	// Initialize APR and create the global pool
+	apr_initialize();
+	
 	if (!gAPRPoolp)
 	{
-		// Initialize APR and create the global pool
-		apr_initialize();
 		apr_pool_create(&gAPRPoolp, NULL);
 		
 		// Initialize the logging mutex
@@ -52,13 +56,23 @@ void ll_init_apr()
 
 	if(!LLAPRFile::sAPRFilePoolp)
 	{
-		LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(FALSE) ;
+		LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(FALSE);
 	}
+
+	LLThreadLocalPointerBase::initAllThreadLocalStorage();
+	gAPRInitialized = true;
 }
 
 
+bool ll_apr_is_initialized()
+{
+	return gAPRInitialized;
+}
+
 void ll_cleanup_apr()
 {
+	gAPRInitialized = false;
+
 	LL_INFOS("APR") << "Cleaning up APR" << LL_ENDL;
 
 	if (gLogMutexp)
@@ -77,6 +91,9 @@ void ll_cleanup_apr()
 		apr_thread_mutex_destroy(gCallStacksLogMutexp);
 		gCallStacksLogMutexp = NULL;
 	}
+
+	LLThreadLocalPointerBase::destroyAllThreadLocalStorage();
+
 	if (gAPRPoolp)
 	{
 		apr_pool_destroy(gAPRPoolp);
@@ -84,7 +101,7 @@ void ll_cleanup_apr()
 	}
 	if (LLAPRFile::sAPRFilePoolp)
 	{
-		delete LLAPRFile::sAPRFilePoolp ;
+		delete LLAPRFile::sAPRFilePoolp ;	
 		LLAPRFile::sAPRFilePoolp = NULL ;
 	}
 	apr_terminate();
diff --git a/indra/llcommon/llapr.h b/indra/llcommon/llapr.h
index 752574c65d..e9b13c5919 100755
--- a/indra/llcommon/llapr.h
+++ b/indra/llcommon/llapr.h
@@ -32,28 +32,34 @@
 #if LL_LINUX || LL_SOLARIS
 #include <sys/param.h>  // Need PATH_MAX in APR headers...
 #endif
-#if LL_WINDOWS
-	// Limit Windows API to small and manageable set.
-	// If you get undefined symbols, find the appropriate
-	// Windows header file and include that in your .cpp file.
-	#define WIN32_LEAN_AND_MEAN
-	#include <winsock2.h>
-	#include <windows.h>
-#endif
 
 #include <boost/noncopyable.hpp>
-
+#include "llwin32headerslean.h"
 #include "apr_thread_proc.h"
 #include "apr_thread_mutex.h"
 #include "apr_getopt.h"
 #include "apr_signal.h"
 #include "apr_atomic.h"
+
 #include "llstring.h"
 
 extern LL_COMMON_API apr_thread_mutex_t* gLogMutexp;
 extern apr_thread_mutex_t* gCallStacksLogMutexp;
 
 struct apr_dso_handle_t;
+/**
+ * @brief Function which appropriately logs error or remains quiet on
+ * APR_SUCCESS.
+ * @return Returns <code>true</code> if status is an error condition.
+ */
+bool LL_COMMON_API ll_apr_warn_status(apr_status_t status);
+/// There's a whole other APR error-message function if you pass a DSO handle.
+bool LL_COMMON_API ll_apr_warn_status(apr_status_t status, apr_dso_handle_t* handle);
+
+void LL_COMMON_API ll_apr_assert_status(apr_status_t status);
+void LL_COMMON_API ll_apr_assert_status(apr_status_t status, apr_dso_handle_t* handle);
+
+extern "C" LL_COMMON_API apr_pool_t* gAPRPoolp; // Global APR memory pool
 
 /** 
  * @brief initialize the common apr constructs -- apr itself, the
@@ -66,6 +72,9 @@ void LL_COMMON_API ll_init_apr();
  */
 void LL_COMMON_API ll_cleanup_apr();
 
+bool LL_COMMON_API ll_apr_is_initialized();
+
+
 //
 //LL apr_pool
 //manage apr_pool_t, destroy allocated apr_pool in the destruction function.
@@ -163,14 +172,17 @@ public:
 	LLAtomic32<Type>(Type x) {apr_atomic_set32(&mData, apr_uint32_t(x)); };
 	~LLAtomic32<Type>() {};
 
-	operator const Type() { apr_uint32_t data = apr_atomic_read32(&mData); return Type(data); }
+	operator const Type() { return get(); }
 	Type operator =(const Type& x) { apr_atomic_set32(&mData, apr_uint32_t(x)); return Type(mData); }
 	void operator -=(Type x) { apr_atomic_sub32(&mData, apr_uint32_t(x)); }
 	void operator +=(Type x) { apr_atomic_add32(&mData, apr_uint32_t(x)); }
 	Type operator ++(int) { return apr_atomic_inc32(&mData); } // Type++
-	Type operator --(int) { return apr_atomic_dec32(&mData); } // approximately --Type (0 if final is 0, non-zero otherwise)
+	Type operator ++()	  { apr_atomic_inc32(&mData); return get();  } // ++Type
+	Type operator --(int) { const Type result(get()); apr_atomic_dec32(&mData); return result; } // Type-- 
+	Type operator --()	  { return apr_atomic_dec32(&mData); } // approximately --Type (0 if final is 0, non-zero otherwise)
 	
 private:
+	const Type get() { apr_uint32_t data = apr_atomic_read32(&mData); return Type(data); }
 	apr_uint32_t mData;
 };
 
@@ -257,18 +269,5 @@ public:
 //*******************************************************************************************************************************
 };
 
-/**
- * @brief Function which appropriately logs error or remains quiet on
- * APR_SUCCESS.
- * @return Returns <code>true</code> if status is an error condition.
- */
-bool LL_COMMON_API ll_apr_warn_status(apr_status_t status);
-/// There's a whole other APR error-message function if you pass a DSO handle.
-bool LL_COMMON_API ll_apr_warn_status(apr_status_t status, apr_dso_handle_t* handle);
-
-void LL_COMMON_API ll_apr_assert_status(apr_status_t status);
-void LL_COMMON_API ll_apr_assert_status(apr_status_t status, apr_dso_handle_t* handle);
-
-extern "C" LL_COMMON_API apr_pool_t* gAPRPoolp; // Global APR memory pool
 
 #endif // LL_LLAPR_H
diff --git a/indra/llcommon/llassoclist.h b/indra/llcommon/llassoclist.h
deleted file mode 100755
index 2950504155..0000000000
--- a/indra/llcommon/llassoclist.h
+++ /dev/null
@@ -1,296 +0,0 @@
-/** 
- * @file llassoclist.h
- * @brief LLAssocList class header file
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLASSOCLIST_H
-#define LL_LLASSOCLIST_H
-
-//------------------------------------------------------------------------
-// LLAssocList is an associative list container class.
-//
-// The implementation is a single linked list.
-// Both index and value objects are stored by value (not reference).
-// If pointer values are specified for index and/or value, this
-// container does NOT assume ownership of the referenced objects,
-// and does NOT delete() them on removal or destruction of the container.
-//
-// Note that operations are generally not optimized, and may of them
-// are O(n) complexity.
-//------------------------------------------------------------------------
-
-#include <iostream>
-
-template<class INDEX_TYPE, class VALUE_TYPE>
-class LLAssocList
-{
-private:
-	// internal list node type
-	class Node
-	{
-	public:
-		Node(const INDEX_TYPE &index, const VALUE_TYPE &value, Node *next)
-		{
-			mIndex = index;
-			mValue = value;
-			mNext = next;
-		}
-		~Node() { }
-		INDEX_TYPE	mIndex;
-		VALUE_TYPE	mValue;
-		Node		*mNext;
-	};
-
-	// head of the linked list
-	Node *mHead;
-
-public:
-	// Constructor
-	LLAssocList()
-	{
-		mHead = NULL;
-	}
-
-	// Destructor
-	~LLAssocList()
-	{
-		removeAll();
-	}
-
-	// Returns TRUE if list is empty.
-	BOOL isEmpty()
-	{
-		return (mHead == NULL);
-	}
-
-	// Returns the number of items in the list.
-	U32 length()
-	{
-		U32 count = 0;
-		for (	Node *node = mHead;
-				node;
-				node = node->mNext )
-		{
-			count++;
-		}
-		return count;
-	}
-
-	// Removes item with the specified index.
-	BOOL remove( const INDEX_TYPE &index )
-	{
-		if (!mHead)
-			return FALSE;
-
-		if (mHead->mIndex == index)
-		{
-			Node *node = mHead;
-			mHead = mHead->mNext;
-			delete node;
-			return TRUE;
-		}
-
-		for (	Node *prev = mHead;
-				prev->mNext;
-				prev = prev->mNext )
-		{
-			if (prev->mNext->mIndex == index)
-			{
-				Node *node = prev->mNext;
-				prev->mNext = prev->mNext->mNext;
-				delete node;
-				return TRUE;
-			}
-		}
-		return FALSE;
-	}
-
-	// Removes all items from the list.
-	void removeAll()
-	{
-		while ( mHead )
-		{
-			Node *node = mHead;
-			mHead = mHead->mNext;
-			delete node;
-		}
-	}
-
-	// Adds a new item to the head of the list,
-	// removing any existing item with same index.
-	void addToHead( const INDEX_TYPE &index, const VALUE_TYPE &value )
-	{
-		remove(index);
-		Node *node = new Node(index, value, mHead);
-		mHead = node;
-	}
-
-	// Adds a new item to the end of the list,
-	// removing any existing item with the same index.
-	void addToTail( const INDEX_TYPE &index, const VALUE_TYPE &value )
-	{
-		remove(index);
-		Node *node = new Node(index, value, NULL);
-		if (!mHead)
-		{
-			mHead = node;
-			return;
-		}
-		for (	Node *prev=mHead;
-				prev;
-				prev=prev->mNext )
-		{
-			if (!prev->mNext)
-			{
-				prev->mNext=node;
-				return;
-			}
-		}
-	}
-
-	// Sets the value of a specified index.
-	// If index does not exist, a new value will be added only if
-	// 'addIfNotFound' is set to TRUE.
-	// Returns TRUE if successful.
-	BOOL setValue( const INDEX_TYPE &index, const VALUE_TYPE &value, BOOL addIfNotFound=FALSE )
-	{
-		VALUE_TYPE *valueP = getValue(index);
-		if (valueP)
-		{
-			*valueP = value;
-			return TRUE;
-		}
-		if (!addIfNotFound)
-			return FALSE;
-		addToTail(index, value);
-		return TRUE;
-	}
-
-	// Sets the ith value in the list.
-	// A new value will NOT be addded, if the ith value does not exist.
-	// Returns TRUE if successful.
-	BOOL setValueAt( U32 i, const VALUE_TYPE &value )
-	{
-		VALUE_TYPE *valueP = getValueAt(i);
-		if (valueP)
-		{
-			*valueP = value;
-			return TRUE;
-		}
-		return FALSE;
-	}
-
-	// Returns a pointer to the value for the specified index,
-	// or NULL if no item found.
-	VALUE_TYPE *getValue( const INDEX_TYPE &index )
-	{
-		for (	Node *node = mHead;
-				node;
-				node = node->mNext )
-		{
-			if (node->mIndex == index)
-				return &node->mValue;
-		}
-		return NULL;
-	}
-
-	// Returns a pointer to the ith value in the list, or
-	// NULL if i is not valid.
-	VALUE_TYPE *getValueAt( U32 i )
-	{
-		U32 count = 0;
-		for (	Node *node = mHead;
-				node;
-				node = node->mNext )
-		{
-			if (count == i)
-				return &node->mValue;
-			count++;
-		}
-		return NULL;
-	}
-
-	// Returns a pointer to the index for the specified index,
-	// or NULL if no item found.
-	INDEX_TYPE *getIndex( const INDEX_TYPE &index )
-	{
-		for (	Node *node = mHead;
-				node;
-				node = node->mNext )
-		{
-			if (node->mIndex == index)
-				return &node->mIndex;
-		}
-		return NULL;
-	}
-
-	// Returns a pointer to the ith index in the list, or
-	// NULL if i is not valid.
-	INDEX_TYPE *getIndexAt( U32 i )
-	{
-		U32 count = 0;
-		for (	Node *node = mHead;
-				node;
-				node = node->mNext )
-		{
-			if (count == i)
-				return &node->mIndex;
-			count++;
-		}
-		return NULL;
-	}
-
-	// Returns a pointer to the value for the specified index,
-	// or NULL if no item found.
-	VALUE_TYPE *operator[](const INDEX_TYPE &index)
-	{
-		return getValue(index);
-	}
-
-	// Returns a pointer to the ith value in the list, or
-	// NULL if i is not valid.
-	VALUE_TYPE *operator[](U32 i)
-	{
-		return getValueAt(i);
-	}
-
-	// Prints the list contents to the specified stream.
-	friend std::ostream &operator<<( std::ostream &os, LLAssocList &map )
-	{
-		os << "{";
-		for (	Node *node = map.mHead;
-				node;
-				node = node->mNext )
-		{
-			os << "<" << node->mIndex << ", " << node->mValue << ">";
-			if (node->mNext)
-				os << ", ";
-		}
-		os << "}";
-
-		return os;
-	}
-};
-
-#endif // LL_LLASSOCLIST_H
diff --git a/indra/llcommon/llcommon.cpp b/indra/llcommon/llcommon.cpp
index 8be9e4f4de..c720df7555 100755
--- a/indra/llcommon/llcommon.cpp
+++ b/indra/llcommon/llcommon.cpp
@@ -29,6 +29,7 @@
 
 #include "llmemory.h"
 #include "llthread.h"
+#include "lltrace.h"
 
 //static
 BOOL LLCommon::sAprInitialized = FALSE;
@@ -44,15 +45,13 @@ void LLCommon::initClass()
 	}
 	LLTimer::initClass();
 	LLThreadSafeRefCount::initThreadSafeRefCount();
-// 	LLWorkerThread::initClass();
-// 	LLFrameCallbackManager::initClass();
+	LLTrace::init();
 }
 
 //static
 void LLCommon::cleanupClass()
 {
-// 	LLFrameCallbackManager::cleanupClass();
-// 	LLWorkerThread::cleanupClass();
+	LLTrace::cleanup();
 	LLThreadSafeRefCount::cleanupThreadSafeRefCount();
 	LLTimer::cleanupClass();
 	if (sAprInitialized)
diff --git a/indra/llcommon/llcriticaldamp.cpp b/indra/llcommon/llcriticaldamp.cpp
index 87d79b1ee0..2f013fe255 100755
--- a/indra/llcommon/llcriticaldamp.cpp
+++ b/indra/llcommon/llcriticaldamp.cpp
@@ -27,18 +27,38 @@
 #include "linden_common.h"
 
 #include "llcriticaldamp.h"
+#include <algorithm>
 
 //-----------------------------------------------------------------------------
 // static members
 //-----------------------------------------------------------------------------
-LLFrameTimer LLCriticalDamp::sInternalTimer;
-std::map<F32, F32> LLCriticalDamp::sInterpolants;
-F32 LLCriticalDamp::sTimeDelta;
+LLFrameTimer LLSmoothInterpolation::sInternalTimer;
+std::vector<LLSmoothInterpolation::Interpolant> LLSmoothInterpolation::sInterpolants;
+F32 LLSmoothInterpolation::sTimeDelta;
+
+// helper functors
+struct LLSmoothInterpolation::CompareTimeConstants
+{
+	bool operator()(const F32& a, const LLSmoothInterpolation::Interpolant& b) const
+	{
+		return a < b.mTimeScale;
+	}
+
+	bool operator()(const LLSmoothInterpolation::Interpolant& a, const F32& b) const
+	{
+		return a.mTimeScale < b; // bottom of a is higher than bottom of b
+	}
+
+	bool operator()(const LLSmoothInterpolation::Interpolant& a, const LLSmoothInterpolation::Interpolant& b) const
+	{
+		return a.mTimeScale < b.mTimeScale; // bottom of a is higher than bottom of b
+	}
+};
 
 //-----------------------------------------------------------------------------
-// LLCriticalDamp()
+// LLSmoothInterpolation()
 //-----------------------------------------------------------------------------
-LLCriticalDamp::LLCriticalDamp()
+LLSmoothInterpolation::LLSmoothInterpolation()
 {
 	sTimeDelta = 0.f;
 }
@@ -47,43 +67,54 @@ LLCriticalDamp::LLCriticalDamp()
 //-----------------------------------------------------------------------------
 // updateInterpolants()
 //-----------------------------------------------------------------------------
-void LLCriticalDamp::updateInterpolants()
+void LLSmoothInterpolation::updateInterpolants()
 {
 	sTimeDelta = sInternalTimer.getElapsedTimeAndResetF32();
 
-	F32 time_constant;
-
-	for (std::map<F32, F32>::iterator iter = sInterpolants.begin();
-		 iter != sInterpolants.end(); iter++)
+	for (S32 i = 0; i < sInterpolants.size(); i++)
 	{
-		time_constant = iter->first;
-		F32 new_interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant);
-		new_interpolant = llclamp(new_interpolant, 0.f, 1.f);
-		sInterpolants[time_constant] = new_interpolant;
+		Interpolant& interp = sInterpolants[i];
+		interp.mInterpolant = calcInterpolant(interp.mTimeScale);
 	}
 } 
 
 //-----------------------------------------------------------------------------
 // getInterpolant()
 //-----------------------------------------------------------------------------
-F32 LLCriticalDamp::getInterpolant(const F32 time_constant, BOOL use_cache)
+F32 LLSmoothInterpolation::getInterpolant(LLUnit<LLUnits::Seconds, F32> time_constant, bool use_cache)
 {
 	if (time_constant == 0.f)
 	{
 		return 1.f;
 	}
 
-	if (use_cache && sInterpolants.count(time_constant))
+	if (use_cache)
 	{
-		return sInterpolants[time_constant];
+		interpolant_vec_t::iterator find_it = std::lower_bound(sInterpolants.begin(), sInterpolants.end(), time_constant.value(), CompareTimeConstants());
+		if (find_it != sInterpolants.end() && find_it->mTimeScale == time_constant) 
+		{
+			return find_it->mInterpolant;
+		}
+		else
+		{
+			Interpolant interp;
+			interp.mTimeScale = time_constant.value();
+			interp.mInterpolant = calcInterpolant(time_constant.value());
+			sInterpolants.insert(find_it, interp);
+			return interp.mInterpolant;
+		}
 	}
-	
-	F32 interpolant = 1.f - pow(2.f, -sTimeDelta / time_constant);
-	interpolant = llclamp(interpolant, 0.f, 1.f);
-	if (use_cache)
+	else
 	{
-		sInterpolants[time_constant] = interpolant;
+		return calcInterpolant(time_constant.value());
+
 	}
+}
 
-	return interpolant;
+//-----------------------------------------------------------------------------
+// calcInterpolant()
+//-----------------------------------------------------------------------------
+F32 LLSmoothInterpolation::calcInterpolant(F32 time_constant)
+{
+	return llclamp(1.f - powf(2.f, -sTimeDelta / time_constant), 0.f, 1.f);
 }
diff --git a/indra/llcommon/llcriticaldamp.h b/indra/llcommon/llcriticaldamp.h
index 52f052ae25..ab5d4ba6e2 100755
--- a/indra/llcommon/llcriticaldamp.h
+++ b/indra/llcommon/llcriticaldamp.h
@@ -28,26 +28,46 @@
 #ifndef LL_LLCRITICALDAMP_H
 #define LL_LLCRITICALDAMP_H
 
-#include <map>
+#include <vector>
 
 #include "llframetimer.h"
+#include "llunit.h"
 
-class LL_COMMON_API LLCriticalDamp 
+class LL_COMMON_API LLSmoothInterpolation 
 {
 public:
-	LLCriticalDamp();
+	LLSmoothInterpolation();
 
 	// MANIPULATORS
 	static void updateInterpolants();
 
 	// ACCESSORS
-	static F32 getInterpolant(const F32 time_constant, BOOL use_cache = TRUE);
+	static F32 getInterpolant(LLUnit<LLUnits::Seconds, F32> time_constant, bool use_cache = true);
 
-protected:	
+	template<typename T> 
+	static T lerp(T a, T b, LLUnit<LLUnits::Seconds, F32> time_constant, bool use_cache = true)
+	{
+		F32 interpolant = getInterpolant(time_constant, use_cache);
+		return ((a * (1.f - interpolant)) 
+				+ (b * interpolant));
+	}
+
+protected:
+	static F32 calcInterpolant(F32 time_constant);
+
+	struct CompareTimeConstants;
 	static LLFrameTimer sInternalTimer;	// frame timer for calculating deltas
 
-	static std::map<F32, F32> 	sInterpolants;
+	struct Interpolant
+	{
+		F32 mTimeScale;
+		F32 mInterpolant;
+	};
+	typedef std::vector<Interpolant> interpolant_vec_t;
+	static interpolant_vec_t 	sInterpolants;
 	static F32					sTimeDelta;
 };
 
+typedef LLSmoothInterpolation LLCriticalDamp;
+
 #endif  // LL_LLCRITICALDAMP_H
diff --git a/indra/llcommon/lldate.cpp b/indra/llcommon/lldate.cpp
index 030ef6a3c7..2efe39e158 100755
--- a/indra/llcommon/lldate.cpp
+++ b/indra/llcommon/lldate.cpp
@@ -39,6 +39,7 @@
 
 #include "lltimer.h"
 #include "llstring.h"
+#include "llfasttimer.h"
 
 static const F64 DATE_EPOCH = 0.0;
 
@@ -48,18 +49,15 @@ static const F64 LL_APR_USEC_PER_SEC = 1000000.0;
 
 
 LLDate::LLDate() : mSecondsSinceEpoch(DATE_EPOCH)
-{
-}
+{}
 
 LLDate::LLDate(const LLDate& date) :
 	mSecondsSinceEpoch(date.mSecondsSinceEpoch)
-{
-}
+{}
 
-LLDate::LLDate(F64 seconds_since_epoch) :
-	mSecondsSinceEpoch(seconds_since_epoch)
-{
-}
+LLDate::LLDate(LLUnit<LLUnits::Seconds, F64> seconds_since_epoch) :
+	mSecondsSinceEpoch(seconds_since_epoch.value())
+{}
 
 LLDate::LLDate(const std::string& iso8601_date)
 {
diff --git a/indra/llcommon/lldate.h b/indra/llcommon/lldate.h
index 7ff8b550ad..b62a846147 100755
--- a/indra/llcommon/lldate.h
+++ b/indra/llcommon/lldate.h
@@ -33,6 +33,7 @@
 #include <string>
 
 #include "stdtypes.h"
+#include "llunit.h"
 
 /** 
  * @class LLDate
@@ -56,9 +57,9 @@ public:
 	/** 
 	 * @brief Construct a date from a seconds since epoch value.
 	 *
-	 * @pararm seconds_since_epoch The number of seconds since UTC epoch.
+	 * @param seconds_since_epoch The number of seconds since UTC epoch.
 	 */
-	LLDate(F64 seconds_since_epoch);
+	LLDate(LLUnit<LLUnits::Seconds, F64> seconds_since_epoch);
 
 	/** 
 	 * @brief Construct a date from a string representation
diff --git a/indra/llcommon/lldefs.h b/indra/llcommon/lldefs.h
index 5a4b8325f4..d57b9dccff 100755
--- a/indra/llcommon/lldefs.h
+++ b/indra/llcommon/lldefs.h
@@ -244,5 +244,8 @@ inline void llswap(LLDATATYPE& lhs, LLDATATYPE& rhs)
 	rhs = tmp;
 }
 
+#define LL_GLUE_IMPL(x, y) x##y
+#define LL_GLUE_TOKENS(x, y) LL_GLUE_IMPL(x, y)
+
 #endif // LL_LLDEFS_H
 
diff --git a/indra/llcommon/lldeleteutils.h b/indra/llcommon/lldeleteutils.h
deleted file mode 100755
index f250dc3028..0000000000
--- a/indra/llcommon/lldeleteutils.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/** 
- * @file lldeleteutils.h
- * @brief Utility functions to simplify some common pointer-munging idioms.
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LL_DELETE_UTILS_H
-#define LL_DELETE_UTILS_H
-
-// Simple utility functions to eventually replace the common 2-line
-// idiom scattered throughout the viewer codebase.  Note that where
-// possible we would rather be using smart pointers of some sort.
-
-template <class T>
-inline void deleteAndClear(T*& ptr)
-{
-	delete ptr;
-	ptr = NULL;
-}
-
-template <class T>
-inline void deleteAndClearArray(T*& array_ptr)
-{
-	delete[] array_ptr;
-	array_ptr = NULL;
-}
-
-#endif
diff --git a/indra/llcommon/lldepthstack.h b/indra/llcommon/lldepthstack.h
index d9db54efc7..ac435a30fa 100755
--- a/indra/llcommon/lldepthstack.h
+++ b/indra/llcommon/lldepthstack.h
@@ -27,17 +27,20 @@
 #ifndef LL_LLDEPTHSTACK_H
 #define LL_LLDEPTHSTACK_H
 
-#include "linked_lists.h"
+#include "llstl.h"
 
 template <class DATA_TYPE> class LLDepthStack
 {
 private:
-	LLLinkedList<DATA_TYPE> mStack;
+	std::deque<DATA_TYPE*>	mStack;
 	U32						mCurrentDepth;
 	U32						mMaxDepth;
 
 public:
-	LLDepthStack() : mCurrentDepth(0), mMaxDepth(0) {}
+	LLDepthStack() 
+	:	mCurrentDepth(0), mMaxDepth(0) 
+	{}
+
 	~LLDepthStack()	{}
 
 	void setDepth(U32 depth)
@@ -54,24 +57,27 @@ public:
 	{ 
 		if (mCurrentDepth < mMaxDepth)
 		{
-			mStack.addData(data); 
+			mStack.push_back(data); 
 			mCurrentDepth++;
 		}
 		else
 		{
 			// the last item falls off stack and is deleted
-			mStack.getLastData();
-			mStack.deleteCurrentData();	
-			mStack.addData(data);
+			if (!mStack.empty())
+			{
+				mStack.pop_front();
+			}
+			mStack.push_back(data);
 		}
 	}
 	
 	DATA_TYPE *pop()
 	{ 
-		DATA_TYPE *tempp = mStack.getFirstData(); 
-		if (tempp)
+		DATA_TYPE *tempp = NULL;
+		if (!mStack.empty())
 		{
-			mStack.removeCurrentData(); 
+			tempp = mStack.back();
+			mStack.pop_back(); 
 			mCurrentDepth--;
 		}
 		return tempp; 
@@ -79,20 +85,20 @@ public:
 	
 	DATA_TYPE *check()
 	{ 
-		DATA_TYPE *tempp = mStack.getFirstData(); 
-		return tempp; 
+		return mStack.empty() ? NULL : mStack.back();
 	}
 	
 	void deleteAllData()
 	{ 
 		mCurrentDepth = 0;
-		mStack.deleteAllData(); 
+		std::for_each(mStack.begin(), mStack.end(), DeletePointer());
+		mStack.clear(); 
 	}
 	
 	void removeAllNodes()
 	{ 
 		mCurrentDepth = 0;
-		mStack.removeAllNodes(); 
+		mStack.clear(); 
 	}
 };
 
diff --git a/indra/llcommon/lldlinked.h b/indra/llcommon/lldlinked.h
deleted file mode 100755
index 3f7c197be7..0000000000
--- a/indra/llcommon/lldlinked.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/** 
- * @file lldlinked.h
- * @brief Declaration of the LLDLinked class.
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LL_LLDLINKED_H
-#define LL_LLDLINKED_H
-
-template <class Type> class LLDLinked
-{
-	LLDLinked* mNextp;
-	LLDLinked* mPrevp;
-public:
-
-	Type*   getNext()  { return (Type*)mNextp; }
-	Type*   getPrev()  { return (Type*)mPrevp; }
-	Type*   getFirst() { return (Type*)mNextp; }
-
-	void    init()
-	{
-		mNextp = mPrevp = NULL;
-	}
-
-	void    unlink()
-	{
-		if (mPrevp) mPrevp->mNextp = mNextp;
-		if (mNextp) mNextp->mPrevp = mPrevp;
-	}
-
-	 LLDLinked() { mNextp = mPrevp = NULL; }
-	virtual ~LLDLinked() { unlink(); }
-
-	virtual void    deleteAll()
-	{
-		Type *curp = getFirst();
-		while(curp)
-		{
-			Type *nextp = curp->getNext();
-			curp->unlink();
-			delete curp;
-			curp = nextp;
-		}
-	}
-
-	void relink(Type &after)
-	{
-		LLDLinked *afterp = (LLDLinked*)&after;
-		afterp->mPrevp = this;
-		mNextp = afterp;
-	}
-
-	virtual void    append(Type& after)
-	{
-		LLDLinked *afterp = (LLDLinked*)&after;
-		afterp->mPrevp    = this;
-		afterp->mNextp    = mNextp;
-		if (mNextp) mNextp->mPrevp = afterp;
-		mNextp            = afterp;
-	}
-
-	virtual void    insert(Type& before)
-	{
-		LLDLinked *beforep = (LLDLinked*)&before;
-		beforep->mNextp    = this;
-		beforep->mPrevp    = mPrevp;
-		if (mPrevp) mPrevp->mNextp = beforep;
-		mPrevp             = beforep;
-	}
-
-	virtual void    put(Type& obj) { append(obj); }
-};
-
-#endif
diff --git a/indra/llcommon/lldqueueptr.h b/indra/llcommon/lldqueueptr.h
deleted file mode 100755
index 9fe08191e1..0000000000
--- a/indra/llcommon/lldqueueptr.h
+++ /dev/null
@@ -1,352 +0,0 @@
-/** 
- * @file lldqueueptr.h
- * @brief LLDynamicQueuePtr declaration
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LL_LLDQUEUEPTR_H
-#define LL_LLDQUEUEPTR_H
-
-template <class Type> 
-class LLDynamicQueuePtr
-{
-public:
-	enum
-	{
-		OKAY = 0,
-		FAIL = -1
-	};
-	
-	LLDynamicQueuePtr(const S32 size=8);
-	~LLDynamicQueuePtr();
-
-	void init();
-	void destroy();
-	void reset();
-	void reallocate(U32 newsize);
-
-	// ACCESSORS
-	const Type& get(const S32 index) const;					// no bounds checking
-	Type&       get(const S32 index);						// no bounds checking
-	const Type& operator []	(const S32 index) const			{ return get(index); }
-	Type&       operator []	(const S32 index)				{ return get(index); }
-	S32			find(const Type &obj) const;
-
-	S32			count() const								{ return (mLastObj >= mFirstObj ? mLastObj - mFirstObj : mLastObj + mMaxObj - mFirstObj); }
-	S32			getMax() const								{ return mMaxObj; }
-	S32			getFirst() const       { return mFirstObj; }
-	S32			getLast () const       { return mLastObj; }
-
-	// MANIPULATE
-	S32         push(const Type &obj);					// add to end of Queue, returns index from start
-	S32			pull(      Type &obj);			        // pull from Queue, returns index from start
-
-	S32			remove   (S32 index);				    // remove by index
-	S32			removeObj(const Type &obj);				// remove by object
-
-protected:
-	S32           mFirstObj, mLastObj, mMaxObj;
-	Type*		  mMemory;
-
-public:
-
-	void print()
-	{
-		/*
-		Convert this to llinfos if it's intended to be used - djs 08/30/02
-
-		printf("Printing from %d to %d (of %d): ",mFirstObj, mLastObj, mMaxObj);
-
-		if (mFirstObj <= mLastObj)
-		{
-			for (S32 i=mFirstObj;i<mLastObj;i++)
-			{
-				printf("%d ",mMemory[i]);
-			}
-		}
-		else
-		{
-			for (S32 i=mFirstObj;i<mMaxObj;i++)
-			{
-				printf("%d ",mMemory[i]);
-			}
-			for (i=0;i<mLastObj;i++)
-			{
-				printf("%d ",mMemory[i]);
-			}
-		}
-		printf("\n");
-		*/
-	}
-
-};
-
-
-//--------------------------------------------------------
-// LLDynamicQueuePtrPtr implementation
-//--------------------------------------------------------
-
-
-template <class Type>
-inline LLDynamicQueuePtr<Type>::LLDynamicQueuePtr(const S32 size)
-{
-	init();
-	reallocate(size);
-}
-
-template <class Type>
-inline LLDynamicQueuePtr<Type>::~LLDynamicQueuePtr()
-{
-	destroy();
-}
-
-template <class Type>
-inline void LLDynamicQueuePtr<Type>::init()
-{ 
-	mFirstObj    = 0;
-	mLastObj     = 0;
-	mMaxObj      = 0;
-	mMemory      = NULL;
-}
-
-template <class Type>
-inline void LLDynamicQueuePtr<Type>::reallocate(U32 newsize)
-{ 
-	if (newsize)
-	{
-		if (mFirstObj > mLastObj && newsize > mMaxObj)
-		{
-			Type* new_memory = new Type[newsize];
-
-			llassert(new_memory);
-
-			S32 _count = count();
-			S32 i, m = 0;
-			for (i=mFirstObj; i < mMaxObj; i++)
-			{
-				new_memory[m++] = mMemory[i];
-			}
-			for (i=0; i <=mLastObj; i++)
-			{
-				new_memory[m++] = mMemory[i];
-			}
-
-			delete[] mMemory;
-			mMemory = new_memory;
-
-			mFirstObj = 0;
-			mLastObj  = _count;
-		}
-		else
-		{
-			Type* new_memory = new Type[newsize];
-
-			llassert(new_memory);
-
-			S32 i, m = 0;
-			for (i=0; i < mLastObj; i++)
-			{
-				new_memory[m++] = mMemory[i];
-			}
-			delete[] mMemory;
-			mMemory = new_memory;
-		}
-	}
-	else if (mMemory)
-	{
-		delete[] mMemory;
-		mMemory = NULL;
-	}
-
-	mMaxObj = newsize;
-}
-
-template <class Type>
-inline void LLDynamicQueuePtr<Type>::destroy()
-{
-	reset();
-	delete[] mMemory;
-	mMemory = NULL;
-}
-
-
-template <class Type>
-void LLDynamicQueuePtr<Type>::reset()	   
-{ 
-	for (S32 i=0; i < mMaxObj; i++)
-	{
-		get(i) = NULL; // unrefs for pointers
-	}
-
-	mFirstObj    = 0;
-	mLastObj     = 0;
-}
-
-
-template <class Type>
-inline S32 LLDynamicQueuePtr<Type>::find(const Type &obj) const
-{
-	S32 i;
-	if (mFirstObj <= mLastObj)
-	{
-		for ( i = mFirstObj; i < mLastObj; i++ )
-		{
-			if (mMemory[i] == obj)
-			{
-				return i;
-			}
-		}
-	}
-	else
-	{
-		for ( i = mFirstObj; i < mMaxObj; i++ )
-		{
-			if (mMemory[i] == obj)
-			{
-				return i;
-			}
-		}
-		for ( i = 0; i < mLastObj; i++ )
-		{
-			if (mMemory[i] == obj)
-			{
-				return i;
-			}
-		}
-	}
-
-	return FAIL;
-}
-
-template <class Type>
-inline S32 LLDynamicQueuePtr<Type>::remove(S32 i)
-{
-	if (mFirstObj > mLastObj)
-	{
-		if (i >= mFirstObj && i < mMaxObj)
-		{
-			while( i > mFirstObj)
-			{
-				mMemory[i] = mMemory[i-1];
-				i--;
-			}
-			mMemory[mFirstObj] = NULL;
-			mFirstObj++;
-			if (mFirstObj >= mMaxObj) mFirstObj = 0;
-
-			return count();
-		}
-		else if (i < mLastObj && i >= 0)
-		{
-			while(i < mLastObj)
-			{
-				mMemory[i] = mMemory[i+1];
-				i++;
-			}
-			mMemory[mLastObj] = NULL;
-			mLastObj--;
-			if (mLastObj < 0) mLastObj = mMaxObj-1;
-
-			return count();
-		}
-	}
-	else if (i <= mLastObj && i >= mFirstObj)
-	{
-		while(i < mLastObj)
-		{
-			mMemory[i] = mMemory[i+1];
-			i++;
-		}
-		mMemory[mLastObj] = NULL;
-		mLastObj--;
-		if (mLastObj < 0) mLastObj = mMaxObj-1;
-
-		return count();
-	}
-
-	
-	return FAIL;
-}
-
-template <class Type>
-inline S32 LLDynamicQueuePtr<Type>::removeObj(const Type& obj)
-{
-	S32 ind = find(obj);
-	if (ind >= 0)
-	{
-		return remove(ind);
-	}
-	return FAIL;
-}
-
-template <class Type>
-inline S32	LLDynamicQueuePtr<Type>::push(const Type &obj) 
-{
-	if (mMaxObj - count() <= 1)
-	{
-		reallocate(mMaxObj * 2);
-	}
-
-	mMemory[mLastObj++] = obj;
-
-	if (mLastObj >= mMaxObj) 
-	{
-		mLastObj = 0;
-	}
-
-	return count();
-}
-
-template <class Type>
-inline S32	LLDynamicQueuePtr<Type>::pull(Type &obj) 
-{
-	obj = NULL;
-
-	if (count() < 1) return -1;
-
-	obj = mMemory[mFirstObj];
-	mMemory[mFirstObj] = NULL;
-
-	mFirstObj++;
-
-	if (mFirstObj >= mMaxObj) 
-	{
-		mFirstObj = 0;
-	}
-
-	return count();
-}
-
-template <class Type>
-inline const Type& LLDynamicQueuePtr<Type>::get(const S32 i) const
-{
-	return mMemory[i];
-}
-
-template <class Type>
-inline Type& LLDynamicQueuePtr<Type>::get(const S32 i)
-{
-	return mMemory[i];
-}
-
-
-#endif // LL_LLDQUEUEPTR_H
diff --git a/indra/llcommon/llenum.h b/indra/llcommon/llenum.h
deleted file mode 100755
index f57b2bc0b5..0000000000
--- a/indra/llcommon/llenum.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/** 
- * @file llenum.h
- * @author Tom Yedwab
- * @brief Utility class for storing enum value <-> string lookup.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLENUM_H
-#define LL_LLENUM_H
-
-class LLEnum
-{
-public:
-	typedef std::pair<const std::string, const U32> enum_t;
-	enum
-	{
-		UNDEFINED = 0xffffffff,
-	};
-
-	LLEnum(const enum_t values_array[], const U32 length)
-	{
-		for (U32 i=0; i<length; ++i)
-		{
-			mEnumMap.insert(values_array[i]);
-			if (values_array[i].second >= mEnumArray.size())
-			{
-				mEnumArray.resize(values_array[i].second+1);
-			}
-			mEnumArray[values_array[i].second] = values_array[i].first;
-		}
-	}
-
-	U32 operator[](std::string str)
-	{
-		std::map<const std::string, const U32>::iterator itor;
-		itor = mEnumMap.find(str);
-		if (itor != mEnumMap.end())
-		{
-			return itor->second;
-		}
-		return UNDEFINED;
-	}
-
-	const std::string operator[](U32 index)
-	{
-		if (index < mEnumArray.size())
-		{
-			return mEnumArray[index];
-		}
-		return "";
-	}
-
-private:
-	std::map<const std::string, const U32> mEnumMap;
-	std::vector<std::string> mEnumArray;
-};
-
-#endif // LL_LLENUM_H
diff --git a/indra/llcommon/llerrorlegacy.h b/indra/llcommon/llerrorlegacy.h
index 37cee579cd..097a533b1a 100755
--- a/indra/llcommon/llerrorlegacy.h
+++ b/indra/llcommon/llerrorlegacy.h
@@ -29,6 +29,7 @@
 #define LL_LLERRORLEGACY_H
 
 #include "llpreprocessor.h"
+#include <boost/static_assert.hpp>
 
 /*
 	LEGACY -- DO NOT USE THIS STUFF ANYMORE
@@ -111,6 +112,14 @@ const int LL_ERR_PRICE_MISMATCH = -23018;
 #define llverify(func)			do {if (func) {}} while(0)
 #endif
 
+#ifdef LL_WINDOWS
+#define llstatic_assert(func, msg) static_assert(func, msg)
+#define llstatic_assert_template(type, func, msg) static_assert(func, msg)
+#else
+#define llstatic_assert(func, msg) BOOST_STATIC_ASSERT(func)
+#define llstatic_assert_template(type, func, msg) BOOST_STATIC_ASSERT(sizeof(type) != 0 && func);
+#endif
+
 // handy compile-time assert - enforce those template parameters! 
 #define cassert(expn) typedef char __C_ASSERT__[(expn)?1:-1]   /* Flawfinder: ignore */
 	//XXX: used in two places in llcommon/llskipmap.h
diff --git a/indra/llcommon/llevents.cpp b/indra/llcommon/llevents.cpp
index 0855180dcd..1c928b3db8 100755
--- a/indra/llcommon/llevents.cpp
+++ b/indra/llcommon/llevents.cpp
@@ -41,7 +41,6 @@
 #include <algorithm>
 // std headers
 #include <typeinfo>
-#include <cassert>
 #include <cmath>
 #include <cctype>
 // external library headers
diff --git a/indra/llcommon/llfasttimer.cpp b/indra/llcommon/llfasttimer.cpp
index 9b15804e97..dfc72bd2ce 100755
--- a/indra/llcommon/llfasttimer.cpp
+++ b/indra/llcommon/llfasttimer.cpp
@@ -32,8 +32,13 @@
 #include "llsingleton.h"
 #include "lltreeiterators.h"
 #include "llsdserialize.h"
+#include "llunit.h"
+#include "llsd.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
 
 #include <boost/bind.hpp>
+#include <queue>
 
 
 #if LL_WINDOWS
@@ -49,37 +54,36 @@
 #error "architecture not supported"
 #endif
 
+namespace LLTrace
+{
+
 //////////////////////////////////////////////////////////////////////////////
 // statics
 
-S32 LLFastTimer::sCurFrameIndex = -1;
-S32 LLFastTimer::sLastFrameIndex = -1;
-U64 LLFastTimer::sLastFrameTime = LLFastTimer::getCPUClockCount64();
-bool LLFastTimer::sPauseHistory = 0;
-bool LLFastTimer::sResetHistory = 0;
-LLFastTimer::CurTimerData LLFastTimer::sCurTimerData;
-BOOL LLFastTimer::sLog = FALSE;
-std::string LLFastTimer::sLogName = "";
-BOOL LLFastTimer::sMetricLog = FALSE;
-LLMutex* LLFastTimer::sLogLock = NULL;
-std::queue<LLSD> LLFastTimer::sLogQueue;
+bool        TimeBlock::sLog		     = false;
+std::string TimeBlock::sLogName         = "";
+bool        TimeBlock::sMetricLog       = false;
 
 #if LL_LINUX || LL_SOLARIS
-U64 LLFastTimer::sClockResolution = 1000000000; // Nanosecond resolution
+U64         TimeBlock::sClockResolution = 1000000000; // Nanosecond resolution
 #else
-U64 LLFastTimer::sClockResolution = 1000000; // Microsecond resolution
+U64         TimeBlock::sClockResolution = 1000000; // Microsecond resolution
 #endif
 
+static LLMutex*			sLogLock = NULL;
+static std::queue<LLSD> sLogQueue;
+
+
 // FIXME: move these declarations to the relevant modules
 
 // helper functions
-typedef LLTreeDFSPostIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_bottom_up_iterator_t;
+typedef LLTreeDFSPostIter<TimeBlock, TimeBlock::child_const_iter> timer_tree_bottom_up_iterator_t;
 
-static timer_tree_bottom_up_iterator_t begin_timer_tree_bottom_up(LLFastTimer::NamedTimer& id) 
+static timer_tree_bottom_up_iterator_t begin_timer_tree_bottom_up(TimeBlock& id) 
 { 
 	return timer_tree_bottom_up_iterator_t(&id, 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1));
+							boost::bind(boost::mem_fn(&TimeBlock::beginChildren), _1), 
+							boost::bind(boost::mem_fn(&TimeBlock::endChildren), _1));
 }
 
 static timer_tree_bottom_up_iterator_t end_timer_tree_bottom_up() 
@@ -87,14 +91,14 @@ static timer_tree_bottom_up_iterator_t end_timer_tree_bottom_up()
 	return timer_tree_bottom_up_iterator_t(); 
 }
 
-typedef LLTreeDFSIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_dfs_iterator_t;
+typedef LLTreeDFSIter<TimeBlock, TimeBlock::child_const_iter> timer_tree_dfs_iterator_t;
 
 
-static timer_tree_dfs_iterator_t begin_timer_tree(LLFastTimer::NamedTimer& id) 
+static timer_tree_dfs_iterator_t begin_timer_tree(TimeBlock& id) 
 { 
 	return timer_tree_dfs_iterator_t(&id, 
-		boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), 
-							boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1));
+		boost::bind(boost::mem_fn(&TimeBlock::beginChildren), _1), 
+							boost::bind(boost::mem_fn(&TimeBlock::endChildren), _1));
 }
 
 static timer_tree_dfs_iterator_t end_timer_tree() 
@@ -102,90 +106,48 @@ static timer_tree_dfs_iterator_t end_timer_tree()
 	return timer_tree_dfs_iterator_t(); 
 }
 
-// factory class that creates NamedTimers via static DeclareTimer objects
-class NamedTimerFactory : public LLSingleton<NamedTimerFactory>
-{
-public:
-	NamedTimerFactory()
-	:	mTimerRoot(NULL)
-	{}
 
-	/*virtual */ void initSingleton()
+// sort child timers by name
+struct SortTimerByName
+{
+	bool operator()(const TimeBlock* i1, const TimeBlock* i2)
 	{
-		mTimerRoot = new LLFastTimer::NamedTimer("root");
-		mRootFrameState.setNamedTimer(mTimerRoot);
-		mTimerRoot->setFrameState(&mRootFrameState);
-		mTimerRoot->mParent = mTimerRoot;
-		mTimerRoot->setCollapsed(false);
-		mRootFrameState.mParent = &mRootFrameState;
+		return i1->getName() < i2->getName();
 	}
+};
 
-	~NamedTimerFactory()
+TimeBlock& TimeBlock::getRootTimeBlock()
 	{
-		std::for_each(mTimers.begin(), mTimers.end(), DeletePairedPointer());
-
-		delete mTimerRoot;
+	static TimeBlock root_timer("root", true, NULL);
+	return root_timer;
 	}
 
-	LLFastTimer::NamedTimer& createNamedTimer(const std::string& name, LLFastTimer::FrameState* state)
+void TimeBlock::pushLog(LLSD log)
 	{
-		LLFastTimer::NamedTimer* timer = new LLFastTimer::NamedTimer(name);
-		timer->setFrameState(state);
-		timer->setParent(mTimerRoot);
-		mTimers.insert(std::make_pair(name, timer));
+	LLMutexLock lock(sLogLock);
 
-		return *timer;
+	sLogQueue.push(log);
 	}
 
-	LLFastTimer::NamedTimer* getTimerByName(const std::string& name)
-	{
-		timer_map_t::iterator found_it = mTimers.find(name);
-		if (found_it != mTimers.end())
-		{
-			return found_it->second;
-		}
-		return NULL;
-	}
-
-	LLFastTimer::NamedTimer* getRootTimer() { return mTimerRoot; }
-
-	typedef std::multimap<std::string, LLFastTimer::NamedTimer*> timer_map_t;
-	timer_map_t::iterator beginTimers() { return mTimers.begin(); }
-	timer_map_t::iterator endTimers() { return mTimers.end(); }
-	S32 timerCount() { return mTimers.size(); }
-
-private:
-	timer_map_t mTimers;
-
-	LLFastTimer::NamedTimer*		mTimerRoot;
-	LLFastTimer::FrameState			mRootFrameState;
-};
-
-LLFastTimer::DeclareTimer::DeclareTimer(const std::string& name, bool open )
-:	mTimer(NamedTimerFactory::instance().createNamedTimer(name, &mFrameState))
+void TimeBlock::setLogLock(LLMutex* lock)
 {
-	mTimer.setCollapsed(!open);
+	sLogLock = lock;
 }
 
-LLFastTimer::DeclareTimer::DeclareTimer(const std::string& name)
-:	mTimer(NamedTimerFactory::instance().createNamedTimer(name, &mFrameState))
-{
-}
 
 //static
 #if (LL_DARWIN || LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__))
-U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
+U64 TimeBlock::countsPerSecond()
 {
-	return sClockResolution >> 8;
+	return sClockResolution;
 }
 #else // windows or x86-mac or x86-linux or x86-solaris
-U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
+U64 TimeBlock::countsPerSecond()
 {
 #if LL_FASTTIMER_USE_RDTSC || !LL_WINDOWS
 	//getCPUFrequency returns MHz and sCPUClockFrequency wants to be in Hz
-	static U64 sCPUClockFrequency = U64(LLProcessorInfo().getCPUFrequency()*1000000.0);
+	static LLUnit<LLUnits::Hertz, U64> sCPUClockFrequency = LLProcessorInfo().getCPUFrequency();
 
-	// we drop the low-order byte in our timers, so report a lower frequency
 #else
 	// If we're not using RDTSC, each fasttimer tick is just a performance counter tick.
 	// Not redefining the clock frequency itself (in llprocessor.cpp/calculate_cpu_frequency())
@@ -198,269 +160,189 @@ U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
 		firstcall = false;
 	}
 #endif
-	return sCPUClockFrequency >> 8;
+	return sCPUClockFrequency.value();
 }
 #endif
 
-LLFastTimer::FrameState::FrameState()
-:	mActiveCount(0),
-	mCalls(0),
-	mSelfTimeCounter(0),
-	mParent(NULL),
-	mLastCaller(NULL),
-	mMoveUpTree(false)
-{}
-
-
-LLFastTimer::NamedTimer::NamedTimer(const std::string& name)
-:	mName(name),
-	mCollapsed(true),
-	mParent(NULL),
-	mTotalTimeCounter(0),
-	mCountAverage(0),
-	mCallAverage(0),
-	mNeedsSorting(false),
-	mFrameState(NULL)
-{
-	mCountHistory = new U32[HISTORY_NUM];
-	memset(mCountHistory, 0, sizeof(U32) * HISTORY_NUM);
-	mCallHistory = new U32[HISTORY_NUM];
-	memset(mCallHistory, 0, sizeof(U32) * HISTORY_NUM);
-}
-
-LLFastTimer::NamedTimer::~NamedTimer()
-{
-	delete[] mCountHistory;
-	delete[] mCallHistory;
-}
-
-std::string LLFastTimer::NamedTimer::getToolTip(S32 history_idx)
-{
-	F64 ms_multiplier = 1000.0 / (F64)LLFastTimer::countsPerSecond();
-	if (history_idx < 0)
-	{
-		// by default, show average number of call
-		return llformat("%s (%d ms, %d calls)", getName().c_str(), (S32)(getCountAverage() * ms_multiplier), (S32)getCallAverage());
-	}
-	else
-	{
-		return llformat("%s (%d ms, %d calls)", getName().c_str(), (S32)(getHistoricalCount(history_idx) * ms_multiplier), (S32)getHistoricalCalls(history_idx));
-	}
-}
-
-void LLFastTimer::NamedTimer::setParent(NamedTimer* parent)
-{
-	llassert_always(parent != this);
-	llassert_always(parent != NULL);
-
-	if (mParent)
-	{
-		// subtract our accumulated from previous parent
-		for (S32 i = 0; i < HISTORY_NUM; i++)
-		{
-			mParent->mCountHistory[i] -= mCountHistory[i];
-		}
-
-		// subtract average timing from previous parent
-		mParent->mCountAverage -= mCountAverage;
-
-		std::vector<NamedTimer*>& children = mParent->getChildren();
-		std::vector<NamedTimer*>::iterator found_it = std::find(children.begin(), children.end(), this);
-		if (found_it != children.end())
-		{
-			children.erase(found_it);
-		}
-	}
-
-	mParent = parent;
-	if (parent)
-	{
-		getFrameState().mParent = &parent->getFrameState();
-		parent->getChildren().push_back(this);
-		parent->mNeedsSorting = true;
-	}
-}
-
-S32 LLFastTimer::NamedTimer::getDepth()
+TimeBlock::TimeBlock(const char* name, bool open, TimeBlock* parent)
+:	TraceType<TimeBlockAccumulator>(name),
+	mCollapsed(true)
 {
-	S32 depth = 0;
-	NamedTimer* timerp = mParent;
-	while(timerp)
-	{
-		depth++;
-		if (timerp->getParent() == timerp) break;
-		timerp = timerp->mParent;
-	}
-	return depth;
+	setCollapsed(!open);
 }
 
-// static
-void LLFastTimer::NamedTimer::processTimes()
+TimeBlockTreeNode& TimeBlock::getTreeNode() const
 {
-	if (sCurFrameIndex < 0) return;
-
-	buildHierarchy();
-	accumulateTimings();
+	TimeBlockTreeNode* nodep = LLTrace::get_thread_recorder()->getTimeBlockTreeNode(getIndex());
+	llassert(nodep);
+	return *nodep;
 }
 
-// sort child timers by name
-struct SortTimerByName
-{
-	bool operator()(const LLFastTimer::NamedTimer* i1, const LLFastTimer::NamedTimer* i2)
-	{
-		return i1->getName() < i2->getName();
-	}
-};
+static LLFastTimer::DeclareTimer FTM_PROCESS_TIMES("Process FastTimer Times");
 
+// not thread safe, so only call on main thread
 //static
-void LLFastTimer::NamedTimer::buildHierarchy()
+void TimeBlock::processTimes()
 {
-	if (sCurFrameIndex < 0 ) return;
+	LLFastTimer _(FTM_PROCESS_TIMES);
+	get_clock_count(); // good place to calculate clock frequency
+	U64 cur_time = getCPUClockCount64();
 
 	// set up initial tree
+	for (LLInstanceTracker<TimeBlock>::instance_iter begin_it = LLInstanceTracker<TimeBlock>::beginInstances(), end_it = LLInstanceTracker<TimeBlock>::endInstances(), it = begin_it; 
+		it != end_it; 
+		++it)
 	{
-		for (instance_iter it = beginInstances(); it != endInstances(); ++it)
+		TimeBlock& timer = *it;
+		if (&timer == &TimeBlock::getRootTimeBlock()) continue;
+			
+		// bootstrap tree construction by attaching to last timer to be on stack
+		// when this timer was called
+		if (timer.getParent() == &TimeBlock::getRootTimeBlock())
 		{
-			NamedTimer& timer = *it;
-			if (&timer == NamedTimerFactory::instance().getRootTimer()) continue;
+			TimeBlockAccumulator* accumulator = timer.getPrimaryAccumulator();
 			
-			// bootstrap tree construction by attaching to last timer to be on stack
-			// when this timer was called
-			if (timer.getFrameState().mLastCaller && timer.mParent == NamedTimerFactory::instance().getRootTimer())
+			if (accumulator->mLastCaller)
 			{
-				timer.setParent(timer.getFrameState().mLastCaller->mTimer);
-				// no need to push up tree on first use, flag can be set spuriously
-				timer.getFrameState().mMoveUpTree = false;
+				timer.setParent(accumulator->mLastCaller);
+				accumulator->mParent = accumulator->mLastCaller;
 			}
+				// no need to push up tree on first use, flag can be set spuriously
+			accumulator->mMoveUpTree = false;
 		}
 	}
 
-	// bump timers up tree if they've been flagged as being in the wrong place
+	// bump timers up tree if they have been flagged as being in the wrong place
 	// do this in a bottom up order to promote descendants first before promoting ancestors
 	// this preserves partial order derived from current frame's observations
-	for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(*NamedTimerFactory::instance().getRootTimer());
+	for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(TimeBlock::getRootTimeBlock());
 		it != end_timer_tree_bottom_up();
 		++it)
 	{
-		NamedTimer* timerp = *it;
-		// skip root timer
-		if (timerp == NamedTimerFactory::instance().getRootTimer()) continue;
+		TimeBlock* timerp = *it;
 
-		if (timerp->getFrameState().mMoveUpTree)
+		// sort timers by time last called, so call graph makes sense
+		TimeBlockTreeNode& tree_node = timerp->getTreeNode();
+		if (tree_node.mNeedsSorting)
 		{
-			// since ancestors have already been visited, reparenting won't affect tree traversal
-			//step up tree, bringing our descendants with us
-			LL_DEBUGS("FastTimers") << "Moving " << timerp->getName() << " from child of " << timerp->getParent()->getName() <<
-				" to child of " << timerp->getParent()->getParent()->getName() << LL_ENDL;
-			timerp->setParent(timerp->getParent()->getParent());
-			timerp->getFrameState().mMoveUpTree = false;
-
-			// don't bubble up any ancestors until descendants are done bubbling up
-			it.skipAncestors();
+			std::sort(tree_node.mChildren.begin(), tree_node.mChildren.end(), SortTimerByName());
 		}
-	}
 
-	// sort timers by time last called, so call graph makes sense
-	for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer());
-		it != end_timer_tree();
-		++it)
-	{
-		NamedTimer* timerp = (*it);
-		if (timerp->mNeedsSorting)
+		// skip root timer
+		if (timerp != &TimeBlock::getRootTimeBlock())
 		{
-			std::sort(timerp->getChildren().begin(), timerp->getChildren().end(), SortTimerByName());
+			TimeBlockAccumulator* accumulator = timerp->getPrimaryAccumulator();
+
+			if (accumulator->mMoveUpTree)
+			{
+				// since ancestors have already been visited, re-parenting won't affect tree traversal
+				//step up tree, bringing our descendants with us
+				LL_DEBUGS("FastTimers") << "Moving " << timerp->getName() << " from child of " << timerp->getParent()->getName() <<
+					" to child of " << timerp->getParent()->getParent()->getName() << LL_ENDL;
+				timerp->setParent(timerp->getParent()->getParent());
+					accumulator->mParent = timerp->getParent();
+					accumulator->mMoveUpTree = false;
+
+				// don't bubble up any ancestors until descendants are done bubbling up
+					// as ancestors may call this timer only on certain paths, so we want to resolve
+					// child-most block locations before their parents
+				it.skipAncestors();
+			}
 		}
-		timerp->mNeedsSorting = false;
 	}
-}
-
-//static
-void LLFastTimer::NamedTimer::accumulateTimings()
-{
-	U32 cur_time = getCPUClockCount32();
 
 	// walk up stack of active timers and accumulate current time while leaving timing structures active
-	LLFastTimer* cur_timer = sCurTimerData.mCurTimer;
-	// root defined by parent pointing to self
-	CurTimerData* cur_data = &sCurTimerData;
-	while(cur_timer && cur_timer->mLastTimerData.mCurTimer != cur_timer)
+	BlockTimerStackRecord* stack_record			= ThreadTimerStack::getInstance();
+	BlockTimer* cur_timer						= stack_record->mActiveTimer;
+	TimeBlockAccumulator* accumulator = stack_record->mTimeBlock->getPrimaryAccumulator();
+
+	while(cur_timer 
+		&& cur_timer->mParentTimerData.mActiveTimer != cur_timer) // root defined by parent pointing to self
 	{
-		U32 cumulative_time_delta = cur_time - cur_timer->mStartTime;
-		U32 self_time_delta = cumulative_time_delta - cur_data->mChildTime;
-		cur_data->mChildTime = 0;
-		cur_timer->mFrameState->mSelfTimeCounter += self_time_delta;
+		U64 cumulative_time_delta = cur_time - cur_timer->mStartTime;
+		accumulator->mTotalTimeCounter += cumulative_time_delta - (accumulator->mTotalTimeCounter - cur_timer->mBlockStartTotalTimeCounter);
+		accumulator->mSelfTimeCounter += cumulative_time_delta - stack_record->mChildTime;
+		stack_record->mChildTime = 0;
+
 		cur_timer->mStartTime = cur_time;
+		cur_timer->mBlockStartTotalTimeCounter = accumulator->mTotalTimeCounter;
 
-		cur_data = &cur_timer->mLastTimerData;
-		cur_data->mChildTime += cumulative_time_delta;
+		stack_record = &cur_timer->mParentTimerData;
+		accumulator = stack_record->mTimeBlock->getPrimaryAccumulator();
+		cur_timer = stack_record->mActiveTimer;
 
-		cur_timer = cur_timer->mLastTimerData.mCurTimer;
+		stack_record->mChildTime += cumulative_time_delta;
 	}
 
-	// traverse tree in DFS post order, or bottom up
-	for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(*NamedTimerFactory::instance().getRootTimer());
-		it != end_timer_tree_bottom_up();
+	// reset for next frame
+	for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(),
+			end_it = LLInstanceTracker<TimeBlock>::endInstances();
+		it != end_it;
 		++it)
 	{
-		NamedTimer* timerp = (*it);
-		timerp->mTotalTimeCounter = timerp->getFrameState().mSelfTimeCounter;
-		for (child_const_iter child_it = timerp->beginChildren(); child_it != timerp->endChildren(); ++child_it)
+		TimeBlock& timer = *it;
+		TimeBlockAccumulator* accumulator = timer.getPrimaryAccumulator();
+
+		accumulator->mLastCaller = NULL;
+		accumulator->mMoveUpTree = false;
+	}
+}
+
+
+std::vector<TimeBlock*>::iterator TimeBlock::beginChildren()
 		{
-			timerp->mTotalTimeCounter += (*child_it)->mTotalTimeCounter;
+	return getTreeNode().mChildren.begin(); 
 		}
 
-		S32 cur_frame = sCurFrameIndex;
-		if (cur_frame >= 0)
+std::vector<TimeBlock*>::iterator TimeBlock::endChildren()
 		{
-			// update timer history
-			int hidx = cur_frame % HISTORY_NUM;
+	return getTreeNode().mChildren.end();
+}
 
-			timerp->mCountHistory[hidx] = timerp->mTotalTimeCounter;
-			timerp->mCountAverage = ((U64)timerp->mCountAverage * cur_frame + timerp->mTotalTimeCounter) / (cur_frame+1);
-			timerp->mCallHistory[hidx] = timerp->getFrameState().mCalls;
-			timerp->mCallAverage = ((U64)timerp->mCallAverage * cur_frame + timerp->getFrameState().mCalls) / (cur_frame+1);
-		}
-	}
+std::vector<TimeBlock*>& TimeBlock::getChildren()
+{
+	return getTreeNode().mChildren;
 }
 
 // static
-void LLFastTimer::NamedTimer::resetFrame()
+void TimeBlock::logStats()
 {
+	// get ready for next frame
 	if (sLog)
 	{ //output current frame counts to performance log
 
 		static S32 call_count = 0;
 		if (call_count % 100 == 0)
 		{
-			LL_DEBUGS("FastTimers") << "countsPerSecond (32 bit): " << countsPerSecond() << LL_ENDL;
-			LL_DEBUGS("FastTimers") << "get_clock_count (64 bit): " << get_clock_count() << llendl;
+			LL_DEBUGS("FastTimers") << "countsPerSecond: " << countsPerSecond() << LL_ENDL;
 			LL_DEBUGS("FastTimers") << "LLProcessorInfo().getCPUFrequency() " << LLProcessorInfo().getCPUFrequency() << LL_ENDL;
 			LL_DEBUGS("FastTimers") << "getCPUClockCount32() " << getCPUClockCount32() << LL_ENDL;
 			LL_DEBUGS("FastTimers") << "getCPUClockCount64() " << getCPUClockCount64() << LL_ENDL;
-			LL_DEBUGS("FastTimers") << "elapsed sec " << ((F64)getCPUClockCount64())/((F64)LLProcessorInfo().getCPUFrequency()*1000000.0) << LL_ENDL;
+			LL_DEBUGS("FastTimers") << "elapsed sec " << ((F64)getCPUClockCount64()) / (LLUnit<LLUnits::Hertz, F64>(LLProcessorInfo().getCPUFrequency())) << LL_ENDL;
 		}
 		call_count++;
 
-		F64 iclock_freq = 1000.0 / countsPerSecond(); // good place to calculate clock frequency
-
-		F64 total_time = 0;
+		LLUnit<LLUnits::Seconds, F64> total_time(0);
 		LLSD sd;
 
 		{
-			for (instance_iter it = beginInstances(); it != endInstances(); ++it)
+			for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(), 
+				end_it = LLInstanceTracker<TimeBlock>::endInstances(); 
+				it != end_it; 
+			++it)
 			{
-				NamedTimer& timer = *it;
-				FrameState& info = timer.getFrameState();
-				sd[timer.getName()]["Time"] = (LLSD::Real) (info.mSelfTimeCounter*iclock_freq);	
-				sd[timer.getName()]["Calls"] = (LLSD::Integer) info.mCalls;
+				TimeBlock& timer = *it;
+				LLTrace::PeriodicRecording& frame_recording = LLTrace::get_frame_recording();
+				sd[timer.getName()]["Time"] = (LLSD::Real) (frame_recording.getLastRecording().getSum(timer).value());	
+				sd[timer.getName()]["Calls"] = (LLSD::Integer) (frame_recording.getLastRecording().getSum(timer.callCount()));
 				
 				// computing total time here because getting the root timer's getCountHistory
 				// doesn't work correctly on the first frame
-				total_time = total_time + info.mSelfTimeCounter * iclock_freq;
+				total_time += frame_recording.getLastRecording().getSum(timer);
 			}
 		}
 
-		sd["Total"]["Time"] = (LLSD::Real) total_time;
+		sd["Total"]["Time"] = (LLSD::Real) total_time.value();
 		sd["Total"]["Calls"] = (LLSD::Integer) 1;
 
 		{		
@@ -469,168 +351,44 @@ void LLFastTimer::NamedTimer::resetFrame()
 		}
 	}
 
-	// reset for next frame
-	for (instance_iter it = beginInstances(); it != endInstances(); ++it)
-	{
-		NamedTimer& timer = *it;
-			
-		FrameState& info = timer.getFrameState();
-		info.mSelfTimeCounter = 0;
-		info.mCalls = 0;
-		info.mLastCaller = NULL;
-		info.mMoveUpTree = false;
-		// update parent pointer in timer state struct
-		if (timer.mParent)
-		{
-			info.mParent = &timer.mParent->getFrameState();
-		}
-	}
 }
 
 //static
-void LLFastTimer::NamedTimer::reset()
-{
-	resetFrame(); // reset frame data
-
-	// walk up stack of active timers and reset start times to current time
-	// effectively zeroing out any accumulated time
-	U32 cur_time = getCPUClockCount32();
-
-	// root defined by parent pointing to self
-	CurTimerData* cur_data = &sCurTimerData;
-	LLFastTimer* cur_timer = cur_data->mCurTimer;
-	while(cur_timer && cur_timer->mLastTimerData.mCurTimer != cur_timer)
-	{
-		cur_timer->mStartTime = cur_time;
-		cur_data->mChildTime = 0;
-
-		cur_data = &cur_timer->mLastTimerData;
-		cur_timer = cur_data->mCurTimer;
-	}
-
-	// reset all history
-	{
-		for (instance_iter it = beginInstances(); it != endInstances(); ++it)
-		{
-			NamedTimer& timer = *it;
-			if (&timer != NamedTimerFactory::instance().getRootTimer()) 
-			{
-				timer.setParent(NamedTimerFactory::instance().getRootTimer());
-			}
-			
-			timer.mCountAverage = 0;
-			timer.mCallAverage = 0;
-			memset(timer.mCountHistory, 0, sizeof(U32) * HISTORY_NUM);
-			memset(timer.mCallHistory, 0, sizeof(U32) * HISTORY_NUM);
-		}
-	}
-
-	sLastFrameIndex = 0;
-	sCurFrameIndex = 0;
-}
-
-U32 LLFastTimer::NamedTimer::getHistoricalCount(S32 history_index) const
+void TimeBlock::dumpCurTimes()
 {
-	S32 history_idx = (getLastFrameIndex() + history_index) % LLFastTimer::NamedTimer::HISTORY_NUM;
-	return mCountHistory[history_idx];
-}
-
-U32 LLFastTimer::NamedTimer::getHistoricalCalls(S32 history_index ) const
-{
-	S32 history_idx = (getLastFrameIndex() + history_index) % LLFastTimer::NamedTimer::HISTORY_NUM;
-	return mCallHistory[history_idx];
-}
-
-LLFastTimer::FrameState& LLFastTimer::NamedTimer::getFrameState() const
-{
-	return *mFrameState;
-}
-
-std::vector<LLFastTimer::NamedTimer*>::const_iterator LLFastTimer::NamedTimer::beginChildren()
-{ 
-	return mChildren.begin(); 
-}
-
-std::vector<LLFastTimer::NamedTimer*>::const_iterator LLFastTimer::NamedTimer::endChildren()
-{
-	return mChildren.end();
-}
-
-std::vector<LLFastTimer::NamedTimer*>& LLFastTimer::NamedTimer::getChildren()
-{
-	return mChildren;
-}
-
-// static
-LLFastTimer::NamedTimer& LLFastTimer::NamedTimer::getRootNamedTimer()
-{
-        return *NamedTimerFactory::instance().getRootTimer();
-}
-
-//static
-void LLFastTimer::nextFrame()
-{
-	countsPerSecond(); // good place to calculate clock frequency
-	U64 frame_time = getCPUClockCount64();
-	if ((frame_time - sLastFrameTime) >> 8 > 0xffffffff)
-	{
-		llinfos << "Slow frame, fast timers inaccurate" << llendl;
-	}
-
-	if (!sPauseHistory)
-	{
-		NamedTimer::processTimes();
-		sLastFrameIndex = sCurFrameIndex++;
-	}
-	
-	// get ready for next frame
-	NamedTimer::resetFrame();
-	sLastFrameTime = frame_time;
-}
-
-//static
-void LLFastTimer::dumpCurTimes()
-{
-	// accumulate timings, etc.
-	NamedTimer::processTimes();
-	
-	F64 clock_freq = (F64)countsPerSecond();
-	F64 iclock_freq = 1000.0 / clock_freq; // clock_ticks -> milliseconds
+	LLTrace::PeriodicRecording& frame_recording = LLTrace::get_frame_recording();
+	LLTrace::Recording& last_frame_recording = frame_recording.getLastRecording();
 
 	// walk over timers in depth order and output timings
-	for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer());
+	for(timer_tree_dfs_iterator_t it = begin_timer_tree(TimeBlock::getRootTimeBlock());
 		it != end_timer_tree();
 		++it)
 	{
-		NamedTimer* timerp = (*it);
-		F64 total_time_ms = ((F64)timerp->getHistoricalCount(0) * iclock_freq);
+		TimeBlock* timerp = (*it);
+		LLUnit<LLUnits::Seconds, F64> total_time_ms = last_frame_recording.getSum(*timerp);
+		U32 num_calls = last_frame_recording.getSum(timerp->callCount());
+
 		// Don't bother with really brief times, keep output concise
 		if (total_time_ms < 0.1) continue;
 
 		std::ostringstream out_str;
-		for (S32 i = 0; i < timerp->getDepth(); i++)
+		TimeBlock* parent_timerp = timerp;
+		while(parent_timerp && parent_timerp != parent_timerp->getParent())
 		{
 			out_str << "\t";
+			parent_timerp = parent_timerp->getParent();
 		}
 
-
 		out_str << timerp->getName() << " " 
-			<< std::setprecision(3) << total_time_ms << " ms, "
-			<< timerp->getHistoricalCalls(0) << " calls";
+			<< std::setprecision(3) << total_time_ms.as<LLUnits::Milliseconds>().value() << " ms, "
+			<< num_calls << " calls";
 
 		llinfos << out_str.str() << llendl;
 	}
 }
 
 //static 
-void LLFastTimer::reset()
-{
-	NamedTimer::reset();
-}
-
-
-//static
-void LLFastTimer::writeLog(std::ostream& os)
+void TimeBlock::writeLog(std::ostream& os)
 {
 	while (!sLogQueue.empty())
 	{
@@ -641,22 +399,62 @@ void LLFastTimer::writeLog(std::ostream& os)
 	}
 }
 
-//static
-const LLFastTimer::NamedTimer* LLFastTimer::getTimerByName(const std::string& name)
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// TimeBlockAccumulator
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+TimeBlockAccumulator::TimeBlockAccumulator() 
+:	mTotalTimeCounter(0),
+	mSelfTimeCounter(0),
+	mStartTotalTimeCounter(0),
+	mCalls(0),
+	mLastCaller(NULL),
+	mActiveCount(0),
+	mMoveUpTree(false),
+	mParent(NULL)
+{}
+
+void TimeBlockAccumulator::addSamples( const TimeBlockAccumulator& other, bool append )
 {
-	return NamedTimerFactory::instance().getTimerByName(name);
+	// we can't merge two unrelated time block samples, as that will screw with the nested timings
+	// due to the call hierarchy of each thread
+	llassert(append);
+	mTotalTimeCounter += other.mTotalTimeCounter - other.mStartTotalTimeCounter;
+	mSelfTimeCounter += other.mSelfTimeCounter;
+	mCalls += other.mCalls;
+	mLastCaller = other.mLastCaller;
+	mActiveCount = other.mActiveCount;
+	mMoveUpTree = other.mMoveUpTree;
+	mParent = other.mParent;
 }
 
-LLFastTimer::LLFastTimer(LLFastTimer::FrameState* state)
-:	mFrameState(state)
+void TimeBlockAccumulator::reset( const TimeBlockAccumulator* other )
 {
-	U32 start_time = getCPUClockCount32();
-	mStartTime = start_time;
-	mFrameState->mActiveCount++;
-	LLFastTimer::sCurTimerData.mCurTimer = this;
-	LLFastTimer::sCurTimerData.mFrameState = mFrameState;
-	LLFastTimer::sCurTimerData.mChildTime = 0;
-	mLastTimerData = LLFastTimer::sCurTimerData;
+	mCalls = 0;
+	mSelfTimeCounter = 0;
+
+	if (other)
+	{
+		mStartTotalTimeCounter = other->mTotalTimeCounter;
+		mTotalTimeCounter = mStartTotalTimeCounter;
+
+		mLastCaller = other->mLastCaller;
+		mActiveCount = other->mActiveCount;
+		mMoveUpTree = other->mMoveUpTree;
+		mParent = other->mParent;
+	}
+	else
+{
+		mStartTotalTimeCounter = mTotalTimeCounter;
+	}
+}
+
+LLUnit<LLUnits::Seconds, F64> BlockTimer::getElapsedTime()
+{
+	U64 total_time = TimeBlock::getCPUClockCount64() - mStartTime;
+
+	return (F64)total_time / (F64)TimeBlock::countsPerSecond();
 }
 
 
+} // namespace LLTrace
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index 81c4b78775..20514d1638 100755
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -28,216 +28,98 @@
 #define LL_FASTTIMER_H
 
 #include "llinstancetracker.h"
+#include "lltrace.h"
 
 #define FAST_TIMER_ON 1
-#define DEBUG_FAST_TIMER_THREADS 1
+#define LL_FASTTIMER_USE_RDTSC 1
 
 class LLMutex;
 
-#include <queue>
-#include "llsd.h"
-
-#define LL_FASTTIMER_USE_RDTSC 1
-
+namespace LLTrace
+{
 
-LL_COMMON_API void assert_main_thread();
+struct BlockTimerStackRecord
+{
+	class BlockTimer*	mActiveTimer;
+	class TimeBlock*	mTimeBlock;
+	U64					mChildTime;
+};
 
-class LL_COMMON_API LLFastTimer
+class ThreadTimerStack 
+:	public BlockTimerStackRecord, 
+	public LLThreadLocalSingleton<ThreadTimerStack>
 {
-public:
-	class NamedTimer;
+	friend class LLThreadLocalSingleton<ThreadTimerStack>;
+	ThreadTimerStack() 
+	{}
 
-	struct LL_COMMON_API FrameState
-	{
-		FrameState();
-		void setNamedTimer(NamedTimer* timerp) { mTimer = timerp; }
-
-		U32 				mSelfTimeCounter;
-		U32 				mCalls;
-		FrameState*			mParent;		// info for caller timer
-		FrameState*			mLastCaller;	// used to bootstrap tree construction
-		NamedTimer*			mTimer;
-		U16					mActiveCount;	// number of timers with this ID active on stack
-		bool				mMoveUpTree;	// needs to be moved up the tree of timers at the end of frame
-	};
-
-	// stores a "named" timer instance to be reused via multiple LLFastTimer stack instances
-	class LL_COMMON_API NamedTimer
-	:	public LLInstanceTracker<NamedTimer>
+public:
+	ThreadTimerStack& operator=(const BlockTimerStackRecord& other)
 	{
-		friend class DeclareTimer;
-	public:
-		~NamedTimer();
-
-		enum { HISTORY_NUM = 300 };
-
-		const std::string& getName() const { return mName; }
-		NamedTimer* getParent() const { return mParent; }
-		void setParent(NamedTimer* parent);
-		S32 getDepth();
-		std::string getToolTip(S32 history_index = -1);
-
-		typedef std::vector<NamedTimer*>::const_iterator child_const_iter;
-		child_const_iter beginChildren();
-		child_const_iter endChildren();
-		std::vector<NamedTimer*>& getChildren();
-
-		void setCollapsed(bool collapsed) { mCollapsed = collapsed; }
-		bool getCollapsed() const { return mCollapsed; }
-
-		U32 getCountAverage() const { return mCountAverage; }
-		U32 getCallAverage() const { return mCallAverage; }
-
-		U32 getHistoricalCount(S32 history_index = 0) const;
-		U32 getHistoricalCalls(S32 history_index = 0) const;
-
-		static NamedTimer& getRootNamedTimer();
-
-		void setFrameState(FrameState* state) { mFrameState = state; state->setNamedTimer(this); }
-		FrameState& getFrameState() const;
-
-	private:
-		friend class LLFastTimer;
-		friend class NamedTimerFactory;
-
-		//
-		// methods
-		//
-		NamedTimer(const std::string& name);
-		// recursive call to gather total time from children
-		static void accumulateTimings();
-
-		// updates cumulative times and hierarchy,
-		// can be called multiple times in a frame, at any point
-		static void processTimes();
-
-		static void buildHierarchy();
-		static void resetFrame();
-		static void reset();
-
-		//
-		// members
-		//
-		FrameState*		mFrameState;
+		BlockTimerStackRecord::operator=(other);
+		return *this;
+	}
+};
 
-		std::string	mName;
+class BlockTimer
+{
+public:
+	friend class TimeBlock;
+	typedef BlockTimer self_t;
+	typedef class TimeBlock DeclareTimer;
 
-		U32 		mTotalTimeCounter;
+	BlockTimer(TimeBlock& timer);
+	~BlockTimer();
 
-		U32 		mCountAverage;
-		U32			mCallAverage;
+	LLUnit<LLUnits::Seconds, F64> getElapsedTime();
 
-		U32*		mCountHistory;
-		U32*		mCallHistory;
+private:
 
-		// tree structure
-		NamedTimer*					mParent;				// NamedTimer of caller(parent)
-		std::vector<NamedTimer*>	mChildren;
-		bool						mCollapsed;				// don't show children
-		bool						mNeedsSorting;			// sort children whenever child added
-	};
+	U64						mStartTime;
+	U64						mBlockStartTotalTimeCounter;
+	BlockTimerStackRecord	mParentTimerData;
+};
 
-	// used to statically declare a new named timer
-	class LL_COMMON_API DeclareTimer
-	:	public LLInstanceTracker<DeclareTimer>
-	{
-		friend class LLFastTimer;
-	public:
-		DeclareTimer(const std::string& name, bool open);
-		DeclareTimer(const std::string& name);
+// stores a "named" timer instance to be reused via multiple BlockTimer stack instances
+class TimeBlock 
+:	public TraceType<TimeBlockAccumulator>,
+	public LLInstanceTracker<TimeBlock>
+{
+public:
+	TimeBlock(const char* name, bool open = false, TimeBlock* parent = &getRootTimeBlock());
 
-		NamedTimer& getNamedTimer() { return mTimer; }
+	TimeBlockTreeNode& getTreeNode() const;
+	TimeBlock* getParent() const { return getTreeNode().getParent(); }
+	void setParent(TimeBlock* parent) { getTreeNode().setParent(parent); }
 
-	private:
-		FrameState		mFrameState;
-		NamedTimer&		mTimer;
-	};
+	typedef std::vector<TimeBlock*>::iterator child_iter;
+	typedef std::vector<TimeBlock*>::const_iterator child_const_iter;
+	child_iter beginChildren();
+	child_iter endChildren();
+	std::vector<TimeBlock*>& getChildren();
 
-public:
-	LLFastTimer(LLFastTimer::FrameState* state);
+	void setCollapsed(bool collapsed)	{ mCollapsed = collapsed; }
+	bool getCollapsed() const			{ return mCollapsed; }
 
-	LL_FORCE_INLINE LLFastTimer(LLFastTimer::DeclareTimer& timer)
-	:	mFrameState(&timer.mFrameState)
+	TraceType<TimeBlockAccumulator::CallCountFacet>& callCount() 
 	{
-#if FAST_TIMER_ON
-		LLFastTimer::FrameState* frame_state = mFrameState;
-		mStartTime = getCPUClockCount32();
-
-		frame_state->mActiveCount++;
-		frame_state->mCalls++;
-		// keep current parent as long as it is active when we are
-		frame_state->mMoveUpTree |= (frame_state->mParent->mActiveCount == 0);
-
-		LLFastTimer::CurTimerData* cur_timer_data = &LLFastTimer::sCurTimerData;
-		mLastTimerData = *cur_timer_data;
-		cur_timer_data->mCurTimer = this;
-		cur_timer_data->mFrameState = frame_state;
-		cur_timer_data->mChildTime = 0;
-#endif
-#if DEBUG_FAST_TIMER_THREADS
-#if !LL_RELEASE
-		assert_main_thread();
-#endif
-#endif
+		return static_cast<TraceType<TimeBlockAccumulator::CallCountFacet>&>(*(TraceType<TimeBlockAccumulator>*)this);
 	}
 
-	LL_FORCE_INLINE ~LLFastTimer()
+	TraceType<TimeBlockAccumulator::SelfTimeFacet>& selfTime() 
 	{
-#if FAST_TIMER_ON
-		LLFastTimer::FrameState* frame_state = mFrameState;
-		U32 total_time = getCPUClockCount32() - mStartTime;
-
-		frame_state->mSelfTimeCounter += total_time - LLFastTimer::sCurTimerData.mChildTime;
-		frame_state->mActiveCount--;
-
-		// store last caller to bootstrap tree creation
-		// do this in the destructor in case of recursion to get topmost caller
-		frame_state->mLastCaller = mLastTimerData.mFrameState;
-
-		// we are only tracking self time, so subtract our total time delta from parents
-		mLastTimerData.mChildTime += total_time;
-
-		LLFastTimer::sCurTimerData = mLastTimerData;
-#endif
+		return static_cast<TraceType<TimeBlockAccumulator::SelfTimeFacet>&>(*(TraceType<TimeBlockAccumulator>*)this);
 	}
 
-public:
-	static LLMutex*			sLogLock;
-	static std::queue<LLSD> sLogQueue;
-	static BOOL				sLog;
-	static BOOL				sMetricLog;
-	static std::string		sLogName;
-	static bool 			sPauseHistory;
-	static bool 			sResetHistory;
-
-	// call this once a frame to reset timers
-	static void nextFrame();
+	static TimeBlock& getRootTimeBlock();
+	static void pushLog(LLSD sd);
+	static void setLogLock(LLMutex* mutex);
+	static void writeLog(std::ostream& os);
 
 	// dumps current cumulative frame stats to log
 	// call nextFrame() to reset timers
 	static void dumpCurTimes();
 
-	// call this to reset timer hierarchy, averages, etc.
-	static void reset();
-
-	static U64 countsPerSecond();
-	static S32 getLastFrameIndex() { return sLastFrameIndex; }
-	static S32 getCurFrameIndex() { return sCurFrameIndex; }
-
-	static void writeLog(std::ostream& os);
-	static const NamedTimer* getTimerByName(const std::string& name);
-
-	struct CurTimerData
-	{
-		LLFastTimer*	mCurTimer;
-		FrameState*		mFrameState;
-		U32				mChildTime;
-	};
-	static CurTimerData		sCurTimerData;
-
-private:
-
-
 	//////////////////////////////////////////////////////////////////////////////
 	//
 	// Important note: These implementations must be FAST!
@@ -260,14 +142,14 @@ private:
 	//#undef _interlockedbittestandset
 	//#undef _interlockedbittestandreset
 
-	//inline U32 LLFastTimer::getCPUClockCount32()
+	//inline U32 TimeBlock::getCPUClockCount32()
 	//{
 	//	U64 time_stamp = __rdtsc();
 	//	return (U32)(time_stamp >> 8);
 	//}
 	//
 	//// return full timer value, *not* shifted by 8 bits
-	//inline U64 LLFastTimer::getCPUClockCount64()
+	//inline U64 TimeBlock::getCPUClockCount64()
 	//{
 	//	return __rdtsc();
 	//}
@@ -307,7 +189,7 @@ private:
 	}
 
 #else
-	//LL_COMMON_API U64 get_clock_count(); // in lltimer.cpp
+	//U64 get_clock_count(); // in lltimer.cpp
 	// These use QueryPerformanceCounter, which is arguably fine and also works on AMD architectures.
 	static U32 getCPUClockCount32()
 	{
@@ -374,18 +256,71 @@ private:
 
 #endif
 
-	static U64 sClockResolution;
+	static U64 countsPerSecond();
 
-	static S32				sCurFrameIndex;
-	static S32				sLastFrameIndex;
-	static U64				sLastFrameTime;
+	// updates cumulative times and hierarchy,
+	// can be called multiple times in a frame, at any point
+	static void processTimes();
 
-	U32							mStartTime;
-	LLFastTimer::FrameState*	mFrameState;
-	LLFastTimer::CurTimerData	mLastTimerData;
+	// call this once a frame to periodically log timers
+	static void logStats();
 
+	bool						mCollapsed;				// don't show children
+
+	// statics
+	static std::string							sLogName;
+	static bool									sMetricLog,
+												sLog;	
+	static U64									sClockResolution;
 };
 
-typedef class LLFastTimer LLFastTimer;
+LL_FORCE_INLINE BlockTimer::BlockTimer(TimeBlock& timer)
+{
+#if FAST_TIMER_ON
+	BlockTimerStackRecord* cur_timer_data = ThreadTimerStack::getIfExists();
+	TimeBlockAccumulator* accumulator = timer.getPrimaryAccumulator();
+	accumulator->mActiveCount++;
+	mBlockStartTotalTimeCounter = accumulator->mTotalTimeCounter;
+	// keep current parent as long as it is active when we are
+	accumulator->mMoveUpTree |= (accumulator->mParent->getPrimaryAccumulator()->mActiveCount == 0);
+
+	// store top of stack
+	mParentTimerData = *cur_timer_data;
+	// push new information
+	cur_timer_data->mActiveTimer = this;
+	cur_timer_data->mTimeBlock = &timer;
+	cur_timer_data->mChildTime = 0;
+
+	mStartTime = TimeBlock::getCPUClockCount64();
+#endif
+}
+
+LL_FORCE_INLINE BlockTimer::~BlockTimer()
+{
+#if FAST_TIMER_ON
+	U64 total_time = TimeBlock::getCPUClockCount64() - mStartTime;
+	BlockTimerStackRecord* cur_timer_data = ThreadTimerStack::getIfExists();
+	TimeBlockAccumulator* accumulator = cur_timer_data->mTimeBlock->getPrimaryAccumulator();
+
+	accumulator->mCalls++;
+	accumulator->mTotalTimeCounter += total_time - (accumulator->mTotalTimeCounter - mBlockStartTotalTimeCounter);
+	accumulator->mSelfTimeCounter += total_time - cur_timer_data->mChildTime;
+	accumulator->mActiveCount--;
+
+	// store last caller to bootstrap tree creation
+	// do this in the destructor in case of recursion to get topmost caller
+	accumulator->mLastCaller = mParentTimerData.mTimeBlock;
+
+	// we are only tracking self time, so subtract our total time delta from parents
+	mParentTimerData.mChildTime += total_time;
+
+	//pop stack
+	*cur_timer_data = mParentTimerData;
+#endif
+}
+
+}
+
+typedef LLTrace::BlockTimer LLFastTimer; 
 
 #endif // LL_LLFASTTIMER_H
diff --git a/indra/llcommon/llfile.cpp b/indra/llcommon/llfile.cpp
index 864b6e6975..40a57c2ae4 100755
--- a/indra/llcommon/llfile.cpp
+++ b/indra/llcommon/llfile.cpp
@@ -28,7 +28,7 @@
  */
 
 #if LL_WINDOWS
-#include <windows.h>
+#include "llwin32headerslean.h"
 #include <stdlib.h>                 // Windows errno
 #else
 #include <errno.h>
@@ -848,7 +848,7 @@ llifstream::llifstream() : _M_filebuf(),
 #endif
 
 // explicit
-llifstream::llifstream(const std::string& _Filename, 
+llifstream::llifstream(const std::string& _Filename,
 		ios_base::openmode _Mode) : _M_filebuf(),
 #if LL_WINDOWS
 	std::istream(&_M_filebuf)
diff --git a/indra/llcommon/llfindlocale.cpp b/indra/llcommon/llfindlocale.cpp
index cd7c0c7c09..f019bd0c64 100755
--- a/indra/llcommon/llfindlocale.cpp
+++ b/indra/llcommon/llfindlocale.cpp
@@ -33,7 +33,7 @@
 #include <ctype.h>
 
 #ifdef WIN32
-#include <windows.h>
+#include "llwin32headers.h"
 #include <winnt.h>
 #endif
 
diff --git a/indra/llcommon/llindexedqueue.h b/indra/llcommon/llindexedqueue.h
deleted file mode 100755
index aa2675d87d..0000000000
--- a/indra/llcommon/llindexedqueue.h
+++ /dev/null
@@ -1,155 +0,0 @@
-/** 
- * @file llindexedqueue.h
- * @brief An indexed FIFO queue, where only one element with each key
- * can be in the queue.
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLINDEXEDQUEUE_H
-#define LL_LLINDEXEDQUEUE_H
-
-// An indexed FIFO queue, where only one element with each key can be in the queue.
-// This is ONLY used in the interest list, you'll probably want to review this code
-// carefully if you want to use it elsewhere - Doug
-
-template <typename Type> 
-class LLIndexedQueue
-{
-protected:
-	typedef std::deque<Type> type_deque;
-	type_deque mQueue;
-	std::set<Type> mKeySet;
-
-public:
-	LLIndexedQueue() {}
-
-	// move_if_there is an O(n) operation
-	bool push_back(const Type &value, bool move_if_there = false)
-	{
-		if (mKeySet.find(value) != mKeySet.end())
-		{
-			// Already on the queue
-			if (move_if_there)
-			{
-				// Remove the existing entry.
-				typename type_deque::iterator it;
-				for (it = mQueue.begin(); it != mQueue.end(); ++it)
-				{
-					if (*it == value)
-					{
-						break;
-					}
-				}
-
-				// This HAS to succeed, otherwise there's a serious bug in the keyset implementation
-				// (although this isn't thread safe, at all)
-
-				mQueue.erase(it);
-			}
-			else
-			{
-				// We're not moving it, leave it alone
-				return false;
-			}
-		}
-		else
-		{
-			// Doesn't exist, add it to the key set
-			mKeySet.insert(value);
-		}
-
-		mQueue.push_back(value);
-
-		// We succeeded in adding the new element.
-		return true;
-	}
-
-	bool push_front(const Type &value, bool move_if_there = false)
-	{
-		if (mKeySet.find(value) != mKeySet.end())
-		{
-			// Already on the queue
-			if (move_if_there)
-			{
-				// Remove the existing entry.
-				typename type_deque::iterator it;
-				for (it = mQueue.begin(); it != mQueue.end(); ++it)
-				{
-					if (*it == value)
-					{
-						break;
-					}
-				}
-
-				// This HAS to succeed, otherwise there's a serious bug in the keyset implementation
-				// (although this isn't thread safe, at all)
-
-				mQueue.erase(it);
-			}
-			else
-			{
-				// We're not moving it, leave it alone
-				return false;
-			}
-		}
-		else
-		{
-			// Doesn't exist, add it to the key set
-			mKeySet.insert(value);
-		}
-
-		mQueue.push_front(value);
-		return true;
-	}
-
-	void pop()
-	{
-		Type value = mQueue.front();
-		mKeySet.erase(value);
-		mQueue.pop_front();
-	}
-
-	Type &front()
-	{
-		return mQueue.front();
-	}
-
-	S32 size() const
-	{
-		return mQueue.size();
-	}
-
-	bool empty() const
-	{
-		return mQueue.empty();
-	}
-
-	void clear()
-	{
-		// Clear out all elements on the queue
-		mQueue.clear();
-		mKeySet.clear();
-	}
-};
-
-#endif // LL_LLINDEXEDQUEUE_H
diff --git a/indra/llcommon/llinitparam.cpp b/indra/llcommon/llinitparam.cpp
index 89c831d296..dbd4eba7a0 100755
--- a/indra/llcommon/llinitparam.cpp
+++ b/indra/llcommon/llinitparam.cpp
@@ -28,10 +28,17 @@
 #include "linden_common.h"
 
 #include "llinitparam.h"
+#include "llformat.h"
 
 
 namespace LLInitParam
 {
+
+	predicate_rule_t default_parse_rules() 
+	{ 
+		return ll_make_predicate(PROVIDED) && !ll_make_predicate(EMPTY);
+	}
+
 	//
 	// Param
 	//
@@ -196,6 +203,9 @@ namespace LLInitParam
 
 	bool BaseBlock::validateBlock(bool emit_errors) const
 	{
+		// only validate block when it hasn't already passed validation with current data
+		if (!mValidated)
+		{
 		const BlockDescriptor& block_data = mostDerivedBlockDescriptor();
 		for (BlockDescriptor::param_validation_list_t::const_iterator it = block_data.mValidationList.begin(); it != block_data.mValidationList.end(); ++it)
 		{
@@ -209,11 +219,18 @@ namespace LLInitParam
 				return false;
 			}
 		}
-		return true;
+			mValidated = true;
+		}
+		return mValidated;
 	}
 
-	void BaseBlock::serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const LLInitParam::BaseBlock* diff_block) const
+	bool BaseBlock::serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const LLInitParam::BaseBlock* diff_block) const
 	{
+		bool serialized = false;
+		if (!predicate_rule.check(ll_make_predicate(PROVIDED, isProvided())))
+		{
+			return false;
+		}
 		// named param is one like LLView::Params::follows
 		// unnamed param is like LLView::Params::rect - implicit
 		const BlockDescriptor& block_data = mostDerivedBlockDescriptor();
@@ -225,10 +242,10 @@ namespace LLInitParam
 			param_handle_t param_handle = (*it)->mParamHandle;
 			const Param* param = getParamFromHandle(param_handle);
 			ParamDescriptor::serialize_func_t serialize_func = (*it)->mSerializeFunc;
-			if (serialize_func)
+			if (serialize_func && predicate_rule.check(ll_make_predicate(PROVIDED, param->anyProvided())))
 			{
 				const Param* diff_param = diff_block ? diff_block->getParamFromHandle(param_handle) : NULL;
-				serialize_func(*param, parser, name_stack, diff_param);
+				serialized |= serialize_func(*param, parser, name_stack, predicate_rule, diff_param);
 			}
 		}
 
@@ -239,7 +256,7 @@ namespace LLInitParam
 			param_handle_t param_handle = it->second->mParamHandle;
 			const Param* param = getParamFromHandle(param_handle);
 			ParamDescriptor::serialize_func_t serialize_func = it->second->mSerializeFunc;
-			if (serialize_func && param->anyProvided())
+			if (serialize_func && predicate_rule.check(ll_make_predicate(PROVIDED, param->anyProvided())))
 			{
 				// Ensure this param has not already been serialized
 				// Prevents <rect> from being serialized as its own tag.
@@ -264,10 +281,17 @@ namespace LLInitParam
 
 				name_stack.push_back(std::make_pair(it->first, !duplicate));
 				const Param* diff_param = diff_block ? diff_block->getParamFromHandle(param_handle) : NULL;
-				serialize_func(*param, parser, name_stack, diff_param);
+				serialized |= serialize_func(*param, parser, name_stack, predicate_rule, diff_param);
 				name_stack.pop_back();
 			}
 		}
+
+		if (!serialized && predicate_rule.check(ll_make_predicate(EMPTY)))
+		{
+			serialized |= parser.writeValue(Flag(), name_stack);
+		}
+		// was anything serialized in this block?
+		return serialized;
 	}
 
 	bool BaseBlock::inspectBlock(Parser& parser, Parser::name_stack_t name_stack, S32 min_count, S32 max_count) const
diff --git a/indra/llcommon/llinitparam.h b/indra/llcommon/llinitparam.h
index ae836645b9..a32557b4ac 100755
--- a/indra/llcommon/llinitparam.h
+++ b/indra/llcommon/llinitparam.h
@@ -29,14 +29,15 @@
 #define LL_LLPARAM_H
 
 #include <vector>
+#include <list>
 #include <boost/function.hpp>
 #include <boost/type_traits/is_convertible.hpp>
 #include <boost/type_traits/is_enum.hpp>
 #include <boost/unordered_map.hpp>
-#include <boost/shared_ptr.hpp>
 
 #include "llerror.h"
 #include "llstl.h"
+#include "llpredicate.h"
 
 namespace LLTypeTags
 {
@@ -195,6 +196,8 @@ namespace LLInitParam
 			return mValue;
 		}
 
+		bool isValid() const { return true; }
+
 	protected:
 		T mValue;
 	};
@@ -209,13 +212,11 @@ namespace LLInitParam
 		typedef T	value_t;
 
 		ParamValue() 
-		:	T(),
-			mValidated(false)
+		:	T()
 		{}
 
 		ParamValue(const default_value_t& other)
-		:	T(other),
-			mValidated(false)
+		:	T(other)
 		{}
 
 		void setValue(const value_t& val)
@@ -232,9 +233,6 @@ namespace LLInitParam
 		{
 			return *this;
 		}
-
-	protected:
-		mutable bool 	mValidated; // lazy validation flag
 	};
 
 
@@ -497,25 +495,25 @@ namespace LLInitParam
 		virtual ~Parser();
 
 		template <typename T> bool readValue(T& param, typename boost::disable_if<boost::is_enum<T> >::type* dummy = 0)
-			{
+		{
 			parser_read_func_map_t::iterator found_it = mParserReadFuncs->find(&typeid(T));
 			if (found_it != mParserReadFuncs->end())
-				{
+			{
 				return found_it->second(*this, (void*)&param);
-				}
-			
-				return false;
 			}
 			
+			return false;
+		}
+			
 		template <typename T> bool readValue(T& param, typename boost::enable_if<boost::is_enum<T> >::type* dummy = 0)
-			{
+		{
 			parser_read_func_map_t::iterator found_it = mParserReadFuncs->find(&typeid(T));
 			if (found_it != mParserReadFuncs->end())
-				{
+			{
 				return found_it->second(*this, (void*)&param);
-				}
+			}
 			else
-		{
+			{
 				found_it = mParserReadFuncs->find(&typeid(S32));
 				if (found_it != mParserReadFuncs->end())
 				{
@@ -579,6 +577,19 @@ namespace LLInitParam
 
 	class Param;
 
+	enum ESerializePredicates
+	{
+		PROVIDED,
+		REQUIRED,
+		VALID,
+		HAS_DEFAULT_VALUE,
+		EMPTY
+	};
+
+	typedef LLPredicate::Rule<ESerializePredicates> predicate_rule_t;
+
+	predicate_rule_t default_parse_rules();
+
 	// various callbacks and constraints associated with an individual param
 	struct LL_COMMON_API ParamDescriptor
 	{
@@ -589,7 +600,7 @@ namespace LLInitParam
 
 		typedef bool(*merge_func_t)(Param&, const Param&, bool);
 		typedef bool(*deserialize_func_t)(Param&, Parser&, Parser::name_stack_range_t&, bool);
-		typedef void(*serialize_func_t)(const Param&, Parser&, Parser::name_stack_t&, const Param* diff_param);
+		typedef bool(*serialize_func_t)(const Param&, Parser&, Parser::name_stack_t&, const predicate_rule_t rules, const Param* diff_param);
 		typedef void(*inspect_func_t)(const Param&, Parser&, Parser::name_stack_t&, S32 min_count, S32 max_count);
 		typedef bool(*validation_func_t)(const Param*);
 
@@ -617,7 +628,7 @@ namespace LLInitParam
 		UserData*			mUserData;
 	};
 
-	typedef boost::shared_ptr<ParamDescriptor> ParamDescriptorPtr;
+	typedef ParamDescriptor* ParamDescriptorPtr;
 
 	// each derived Block class keeps a static data structure maintaining offsets to various params
 	class LL_COMMON_API BlockDescriptor
@@ -829,12 +840,28 @@ namespace LLInitParam
 		LOG_CLASS(BaseBlock);
 		friend class Param;
 
+		BaseBlock()
+		:	mValidated(false),
+			mParamProvided(false)
+		{}
+
 		virtual ~BaseBlock() {}
 		bool submitValue(Parser::name_stack_t& name_stack, Parser& p, bool silent=false);
 
 		param_handle_t getHandleFromParam(const Param* param) const;
 		bool validateBlock(bool emit_errors = true) const;
 
+		bool isProvided() const
+		{
+			return mParamProvided;
+		}
+
+		bool isValid() const
+		{
+			return validateBlock(false);
+		}
+
+
 		Param* getParamFromHandle(const param_handle_t param_handle)
 		{
 			if (param_handle == 0) return NULL;
@@ -852,10 +879,19 @@ namespace LLInitParam
 		void addSynonym(Param& param, const std::string& synonym);
 
 		// Blocks can override this to do custom tracking of changes
-		virtual void paramChanged(const Param& changed_param, bool user_provided) {}
+		virtual void paramChanged(const Param& changed_param, bool user_provided) 
+		{
+			if (user_provided)
+			{
+				// a child param has been explicitly changed
+				// so *some* aspect of this block is now provided
+				mValidated = false;
+				mParamProvided = true;
+			}
+		}
 
 		bool deserializeBlock(Parser& p, Parser::name_stack_range_t& name_stack_range, bool new_name);
-		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const;
+		bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t rule, const BaseBlock* diff_block = NULL) const;
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const;
 
 		virtual const BlockDescriptor& mostDerivedBlockDescriptor() const { return getBlockDescriptor(); }
@@ -893,6 +929,9 @@ namespace LLInitParam
 			return mergeBlock(block_data, source, overwrite);
 		}
 
+		mutable bool 	mValidated; // lazy validation flag
+		bool			mParamProvided;
+
 	private:
 		const std::string& getParamName(const BlockDescriptor& block_data, const Param* paramp) const;
 	};
@@ -986,6 +1025,8 @@ namespace LLInitParam
 
 		bool isProvided() const { return Param::anyProvided(); }
 
+		bool isValid() const { return true; }
+
 		static bool deserializeParam(Param& param, Parser& parser, Parser::name_stack_range_t& name_stack_range, bool new_name)
 		{ 
 			self_t& typed_param = static_cast<self_t&>(param);
@@ -1014,10 +1055,23 @@ namespace LLInitParam
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
+			bool serialized = false;
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided()) return;
+			const self_t* diff_typed_param = static_cast<const self_t*>(diff_param);
+
+			LLPredicate::Value<ESerializePredicates> predicate;
+			if (diff_typed_param && ParamCompare<T>::equals(typed_param.getValue(), diff_typed_param->getValue()))
+			{
+				predicate.set(HAS_DEFAULT_VALUE);
+			}
+
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+			predicate.set(EMPTY, false);
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			if (!name_stack.empty())
 			{
@@ -1030,25 +1084,27 @@ namespace LLInitParam
 
 			if (!key.empty())
 			{
-				if (!diff_param || !ParamCompare<std::string>::equals(static_cast<const self_t*>(diff_param)->getValueName(), key))
+				if (!diff_typed_param || !ParamCompare<std::string>::equals(diff_typed_param->getValueName(), key))
 				{
-					parser.writeValue(key, name_stack);
+					serialized = parser.writeValue(key, name_stack);
 				}
 			}
 			// then try to serialize value directly
-			else if (!diff_param || !ParamCompare<T>::equals(typed_param.getValue(), static_cast<const self_t*>(diff_param)->getValue()))
+			else if (!diff_typed_param || ParamCompare<T>::equals(typed_param.getValue(), diff_typed_param->getValue()))
 			{
-				if (!parser.writeValue(typed_param.getValue(), name_stack)) 
+				serialized = parser.writeValue(typed_param.getValue(), name_stack);
+				if (!serialized) 
 				{
 					std::string calculated_key = typed_param.calcValueName(typed_param.getValue());
 					if (calculated_key.size() 
-						&& (!diff_param 
+						&& (!diff_typed_param 
 							|| !ParamCompare<std::string>::equals(static_cast<const self_t*>(diff_param)->getValueName(), calculated_key)))
 					{
-						parser.writeValue(calculated_key, name_stack);
+						serialized = parser.writeValue(calculated_key, name_stack);
 					}
 				}
 			}
+			return serialized;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
@@ -1113,19 +1169,19 @@ namespace LLInitParam
 	};
 
 	// parameter that is a block
-	template <typename T, typename NAME_VALUE_LOOKUP>
-	class TypedParam<T, NAME_VALUE_LOOKUP, false, IS_A_BLOCK> 
+	template <typename BLOCK_T, typename NAME_VALUE_LOOKUP>
+	class TypedParam<BLOCK_T, NAME_VALUE_LOOKUP, false, IS_A_BLOCK> 
 	:	public Param,
 		public NAME_VALUE_LOOKUP::type_value_t
 	{
 	protected:
-		typedef ParamValue<typename LLTypeTags::Sorted<T>::value_t>	param_value_t;
-		typedef typename param_value_t::default_value_t				default_value_t;
-		typedef TypedParam<T, NAME_VALUE_LOOKUP, false, IS_A_BLOCK>	self_t;
-		typedef typename NAME_VALUE_LOOKUP::type_value_t			named_value_t;
+		typedef ParamValue<typename LLTypeTags::Sorted<BLOCK_T>::value_t>	param_value_t;
+		typedef typename param_value_t::default_value_t						default_value_t;
+		typedef TypedParam<BLOCK_T, NAME_VALUE_LOOKUP, false, IS_A_BLOCK>	self_t;
+		typedef typename NAME_VALUE_LOOKUP::type_value_t					named_value_t;
 	public:
 		using named_value_t::operator();
-		typedef typename param_value_t::value_t						value_t;
+		typedef typename param_value_t::value_t								value_t;
 
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, const default_value_t& value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count)
 		:	Param(block_descriptor.mCurrentBlockPtr),
@@ -1148,11 +1204,11 @@ namespace LLInitParam
 				if(named_value_t::valueNamesExist()
 					&& parser.readValue(name)				
 					&& named_value_t::getValueFromName(name, typed_param.getValue()))
-				{
-					typed_param.setValueName(name);
-					typed_param.setProvided();
-					return true;
-				}
+			{
+				typed_param.setValueName(name);
+				typed_param.setProvided();
+				return true;
+			}
 			}
 			
 			if(typed_param.deserializeBlock(parser, name_stack_range, new_name))
@@ -1166,10 +1222,16 @@ namespace LLInitParam
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided()) return;
+
+			LLPredicate::Value<ESerializePredicates> predicate;
+
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			if (!name_stack.empty())
 			{
@@ -1182,12 +1244,15 @@ namespace LLInitParam
 				if (!diff_param || !ParamCompare<std::string>::equals(static_cast<const self_t*>(diff_param)->getValueName(), key))
 				{
 					parser.writeValue(key, name_stack);
+					return true;
 				}
 			}
 			else
 			{
-				typed_param.serializeBlock(parser, name_stack, static_cast<const self_t*>(diff_param));
+				return typed_param.serializeBlock(parser, name_stack, predicate_rule, static_cast<const self_t*>(diff_param));
 			}
+			
+			return false;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
@@ -1209,13 +1274,12 @@ namespace LLInitParam
 		// *and* the block as a whole validates
 		bool isProvided() const 
 		{ 
-			// only validate block when it hasn't already passed validation with current data
-			if (Param::anyProvided() && !param_value_t::mValidated)
-			{
-				// a sub-block is "provided" when it has been filled in enough to be valid
-				param_value_t::mValidated = param_value_t::validateBlock(false);
-			}
-			return Param::anyProvided() && param_value_t::mValidated;
+			return Param::anyProvided() && isValid();
+		}
+
+		bool isValid() const
+		{
+			return param_value_t::isValid();
 		}
 
 		// assign block contents to this param-that-is-a-block
@@ -1223,9 +1287,6 @@ namespace LLInitParam
 		{
 			setValue(val);
 			named_value_t::clearValueName();
-			// force revalidation of block
-			// next call to isProvided() will update provision status based on validity
-			param_value_t::mValidated = false;
 			setProvided(flag_as_provided);
 		}
 
@@ -1242,9 +1303,6 @@ namespace LLInitParam
 
 			if (user_provided)
 			{
-				// a child param has been explicitly changed
-				// so *some* aspect of this block is now provided
-				param_value_t::mValidated = false;
 				setProvided();
 				named_value_t::clearValueName();
 			}
@@ -1296,13 +1354,13 @@ namespace LLInitParam
 	};
 
 	// list of non-block parameters
-	template <typename VALUE_TYPE, typename NAME_VALUE_LOOKUP>
-	class TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, NOT_BLOCK> 
+	template <typename MULTI_VALUE_T, typename NAME_VALUE_LOOKUP>
+	class TypedParam<MULTI_VALUE_T, NAME_VALUE_LOOKUP, true, NOT_BLOCK> 
 	:	public Param
 	{
 	protected:
-		typedef TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, NOT_BLOCK>		self_t;
-		typedef ParamValue<typename LLTypeTags::Sorted<VALUE_TYPE>::value_t>	param_value_t;
+		typedef TypedParam<MULTI_VALUE_T, NAME_VALUE_LOOKUP, true, NOT_BLOCK>		self_t;
+		typedef ParamValue<typename LLTypeTags::Sorted<MULTI_VALUE_T>::value_t>	param_value_t;
 		typedef typename std::vector<typename NAME_VALUE_LOOKUP::type_value_t>	container_t;
 		typedef container_t														default_value_t;
 		typedef typename NAME_VALUE_LOOKUP::type_value_t						named_value_t;
@@ -1311,7 +1369,9 @@ namespace LLInitParam
 		typedef typename param_value_t::value_t								value_t;
 		
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, const default_value_t& value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count)
-		:	Param(block_descriptor.mCurrentBlockPtr)
+		:	Param(block_descriptor.mCurrentBlockPtr),
+			mMinCount(min_count),
+			mMaxCount(max_count)
 		{
 			std::copy(value.begin(), value.end(), std::back_inserter(mValues));
 
@@ -1322,7 +1382,13 @@ namespace LLInitParam
 			}
 		} 
 
-		bool isProvided() const { return Param::anyProvided(); }
+		bool isProvided() const { return Param::anyProvided() && isValid(); }
+
+		bool isValid() const 
+		{ 
+			size_t num_elements = numValidElements();
+			return mMinCount < num_elements && num_elements < mMaxCount;
+		}
 
 		static bool deserializeParam(Param& param, Parser& parser, Parser::name_stack_range_t& name_stack_range, bool new_name)
 		{ 
@@ -1337,7 +1403,7 @@ namespace LLInitParam
 			}
 
 			// no further names in stack, attempt to parse value now
-			if (name_stack_range.first == name_stack_range.second)
+			if (new_name_stack_range.first == new_name_stack_range.second)
 			{	
 				std::string name;
 				
@@ -1359,10 +1425,20 @@ namespace LLInitParam
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
+			bool serialized = false;
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided()) return;
+			if (!typed_param.isProvided()) return false;
+
+			LLPredicate::Value<ESerializePredicates> predicate;
+
+			predicate.set(REQUIRED, typed_param.mMinCount > 0);
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+			predicate.set(EMPTY, typed_param.mValues.empty());
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			for (const_iterator it = typed_param.mValues.begin(), end_it = typed_param.mValues.end();
 				it != end_it;
@@ -1378,7 +1454,11 @@ namespace LLInitParam
 					if (!value_written)
 					{
 						std::string calculated_key = it->calcValueName(it->getValue());
-						if (!parser.writeValue(calculated_key, name_stack))
+						if (parser.writeValue(calculated_key, name_stack))
+						{
+							serialized = true;
+						}
+						else
 						{
 							break;
 						}
@@ -1386,19 +1466,23 @@ namespace LLInitParam
 				}
 				else 
 				{
-					if(!parser.writeValue(key, name_stack))
+					if(parser.writeValue(key, name_stack))
+					{
+						serialized = true;
+					}
+					else
 					{
 						break;
 					}
 				}
-
-				name_stack.pop_back();
 			}
+
+			return serialized;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
 		{
-			parser.inspectValue<VALUE_TYPE>(name_stack, min_count, max_count, NULL);
+			parser.inspectValue<MULTI_VALUE_T>(name_stack, min_count, max_count, NULL);
 			if (named_value_t::getPossibleValues())
 			{
 				parser.inspectValue<std::string>(name_stack, min_count, max_count, named_value_t::getPossibleValues());
@@ -1453,7 +1537,7 @@ namespace LLInitParam
 		bool empty() const { return mValues.empty(); }
 		size_t size() const { return mValues.size(); }
 
-		U32 numValidElements() const
+		size_t numValidElements() const
 		{
 			return mValues.size();
 		}
@@ -1483,6 +1567,8 @@ namespace LLInitParam
 		}
 
 		container_t		mValues;
+		size_t			mMinCount,
+						mMaxCount;
 
 	private:
 		void init( BlockDescriptor &block_descriptor, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count, const char* name ) 
@@ -1500,13 +1586,13 @@ namespace LLInitParam
 	};
 
 	// list of block parameters
-	template <typename VALUE_TYPE, typename NAME_VALUE_LOOKUP>
-	class TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, IS_A_BLOCK> 
+	template <typename MULTI_BLOCK_T, typename NAME_VALUE_LOOKUP>
+	class TypedParam<MULTI_BLOCK_T, NAME_VALUE_LOOKUP, true, IS_A_BLOCK> 
 	:	public Param
 	{
 	protected:
-		typedef TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, IS_A_BLOCK>		self_t;
-		typedef ParamValue<typename LLTypeTags::Sorted<VALUE_TYPE>::value_t>	param_value_t;
+		typedef TypedParam<MULTI_BLOCK_T, NAME_VALUE_LOOKUP, true, IS_A_BLOCK>		self_t;
+		typedef ParamValue<typename LLTypeTags::Sorted<MULTI_BLOCK_T>::value_t>	param_value_t;
 		typedef typename std::vector<typename NAME_VALUE_LOOKUP::type_value_t>	container_t;
 		typedef typename NAME_VALUE_LOOKUP::type_value_t						named_value_t;
 		typedef container_t														default_value_t;
@@ -1516,7 +1602,9 @@ namespace LLInitParam
 		typedef typename param_value_t::value_t							value_t;
 
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, const default_value_t& value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count)
-		:	Param(block_descriptor.mCurrentBlockPtr)
+		:	Param(block_descriptor.mCurrentBlockPtr),
+			mMinCount(min_count),
+			mMaxCount(max_count)
 		{
 			std::copy(value.begin(), value.end(), back_inserter(mValues));
 
@@ -1526,7 +1614,14 @@ namespace LLInitParam
 			}
 		} 
 
-		bool isProvided() const { return Param::anyProvided(); }
+		bool isProvided() const { return Param::anyProvided() && isValid(); }
+
+		bool isValid() const 
+		{ 
+			size_t num_elements = numValidElements();
+			return mMinCount < num_elements && num_elements < mMaxCount;
+		}
+
 
 		static bool deserializeParam(Param& param, Parser& parser, Parser::name_stack_range_t& name_stack_range, bool new_name) 
 		{ 
@@ -1549,7 +1644,7 @@ namespace LLInitParam
 			}
 			param_value_t& value = typed_param.mValues.back();
 
-			if (name_stack_range.first == name_stack_range.second)
+			if (new_name_stack_range.first == new_name_stack_range.second)
 			{	// try to parse a known named value
 				std::string name;
 
@@ -1559,6 +1654,10 @@ namespace LLInitParam
 				{
 					typed_param.mValues.back().setValueName(name);
 					typed_param.setProvided();
+					if (new_array_value)
+					{
+						name_stack_range.first->second = false;
+					}
 					return true;
 				}
 			}
@@ -1583,10 +1682,19 @@ namespace LLInitParam
 			return false;
 		}
 
-		static void serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const Param* diff_param)
+		static bool serializeParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const Param* diff_param)
 		{
+			bool serialized = false;
 			const self_t& typed_param = static_cast<const self_t&>(param);
-			if (!typed_param.isProvided()) return;
+			if (!typed_param.isProvided()) return false;
+			LLPredicate::Value<ESerializePredicates> predicate;
+
+			predicate.set(REQUIRED, typed_param.mMinCount > 0);
+			predicate.set(VALID, typed_param.isValid());
+			predicate.set(PROVIDED, typed_param.anyProvided());
+			predicate.set(EMPTY, typed_param.mValues.empty());
+
+			if (!predicate_rule.check(predicate)) return false;
 
 			for (const_iterator it = typed_param.mValues.begin(), end_it = typed_param.mValues.end();
 				it != end_it;
@@ -1597,17 +1705,24 @@ namespace LLInitParam
 				std::string key = it->getValueName();
 				if (!key.empty())
 				{
-					parser.writeValue(key, name_stack);
+					serialized |= parser.writeValue(key, name_stack);
 				}
 				// Not parsed via named values, write out value directly
-				// NOTE: currently we don't worry about removing default values in Multiple
+				// NOTE: currently we don't do diffing of Multiples
 				else 
 				{
-					it->serializeBlock(parser, name_stack, NULL);
+					serialized = it->serializeBlock(parser, name_stack, predicate_rule, NULL);
 				}
 
 				name_stack.pop_back();
 			}
+
+			if (!serialized && predicate_rule.check(ll_make_predicate(EMPTY)))
+			{
+				serialized |= parser.writeValue(Flag(), name_stack);
+			}
+
+			return serialized;
 		}
 
 		static void inspectParam(const Param& param, Parser& parser, Parser::name_stack_t& name_stack, S32 min_count, S32 max_count)
@@ -1670,14 +1785,14 @@ namespace LLInitParam
 		bool empty() const { return mValues.empty(); }
 		size_t size() const { return mValues.size(); }
 
-		U32 numValidElements() const
+		size_t numValidElements() const
 		{
-			U32 count = 0;
+			size_t count = 0;
 			for (const_iterator it = mValues.begin(), end_it = mValues.end();
 				it != end_it;
 				++it)
 			{
-				if(it->validateBlock(false)) count++;
+				if(it->isValid()) count++;
 			}
 			return count;
 		}
@@ -1709,6 +1824,8 @@ namespace LLInitParam
 		}
 
 		container_t			mValues;
+		size_t				mMinCount,
+							mMaxCount;
 
 	private:
 		void init( BlockDescriptor &block_descriptor, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count, const char* name ) 
@@ -2015,7 +2132,7 @@ namespace LLInitParam
 
 			static bool validate(const Param* paramp) 
 			{
-				U32 num_valid = ((super_t*)paramp)->numValidElements();
+				size_t num_valid = ((super_t*)paramp)->numValidElements();
 				return RANGE::minCount <= num_valid && num_valid <= RANGE::maxCount;
 			}
 		};
@@ -2158,13 +2275,11 @@ namespace LLInitParam
 		typedef T									default_value_t;
 
 		ParamValue()
-		:	mValue(),
-			mValidated(false)
+		:	mValue()
 		{}
 
 		ParamValue(const default_value_t& value)
-		:	mValue(value),
-			mValidated(false)
+		:	mValue(value)
 		{}
 
 		void setValue(const value_t& val)
@@ -2191,18 +2306,18 @@ namespace LLInitParam
 			return mValue.deserializeBlock(p, name_stack_range, new_name);
 		}
 
-		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const self_t* diff_block = NULL) const
+		bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const self_t* diff_block = NULL) const
 		{
 			const BaseBlock* base_block = diff_block
 				? &(diff_block->mValue)
 				: NULL;
-			mValue.serializeBlock(p, name_stack, base_block);
+			return mValue.serializeBlock(p, name_stack, predicate_rule, base_block);
 		}
 
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
-			{
+		{
 			return mValue.inspectBlock(p, name_stack, min_count, max_count);
-			}
+		}
 
 		bool mergeBlockParam(bool source_provided, bool dst_provided, BlockDescriptor& block_data, const self_t& source, bool overwrite)
 		{
@@ -2212,9 +2327,7 @@ namespace LLInitParam
 				// clear away what is there and take the new stuff as a whole
 				resetToDefault();
 				return mValue.mergeBlock(block_data, source.getValue(), overwrite);
-		}
-			
-
+			}
 			return mValue.mergeBlock(block_data, source.getValue(), overwrite);
 		}
 
@@ -2223,14 +2336,17 @@ namespace LLInitParam
 			return mValue.validateBlock(emit_errors);
 		}
 
+		bool isValid() const
+		{
+			return validateBlock(false);
+		}
+
 		static BlockDescriptor& getBlockDescriptor()
 		{
 			return value_t::getBlockDescriptor();
 		}
 
 
-		mutable bool 	mValidated; // lazy validation flag
-
 	private:
 		void resetToDefault()
 		{
@@ -2251,15 +2367,13 @@ namespace LLInitParam
 		typedef T									default_value_t;
 
 		ParamValue()
-		:	mValue(),
-			mValidated(false)
+		:	mValue()
 		{
 			mCurParam = getBlockDescriptor().mAllParams.begin();
 		}
 
 		ParamValue(const default_value_t& value)
-		:	mValue(value),
-			mValidated(false)
+		:	mValue(value)
 		{
 			mCurParam = getBlockDescriptor().mAllParams.begin();
 		}
@@ -2284,7 +2398,7 @@ namespace LLInitParam
 			if (new_name)
 			{
 				mCurParam = getBlockDescriptor().mAllParams.begin();
-		}
+			}
 			if (name_stack_range.first == name_stack_range.second 
 				&& mCurParam != getBlockDescriptor().mAllParams.end())
 			{
@@ -2296,7 +2410,7 @@ namespace LLInitParam
 				if (deserialize_func 
 					&& paramp 
 					&& deserialize_func(*paramp, p, name_stack_range, new_name))
-		{
+				{
 					++mCurParam;
 					return true;
 				}
@@ -2304,19 +2418,19 @@ namespace LLInitParam
 				{
 					return false;
 				}
-		}
+			}
 			else
 			{
 				return mValue.deserializeBlock(p, name_stack_range, new_name);
 			}
 		}
 
-		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const self_t* diff_block = NULL) const
+		bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const self_t* diff_block = NULL) const
 		{
 			const BaseBlock* base_block = diff_block
 				? &(diff_block->mValue)
 				: NULL;
-			mValue.serializeBlock(p, name_stack, base_block);
+			return mValue.serializeBlock(p, name_stack, predicate_rule, base_block);
 		}
 
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
@@ -2334,13 +2448,16 @@ namespace LLInitParam
 			return mValue.validateBlock(emit_errors);
 		}
 
+		bool isValid() const
+		{
+			return validateBlock(false);
+		}
+
 		static BlockDescriptor& getBlockDescriptor()
 		{
 			return value_t::getBlockDescriptor();
 		}
 
-		mutable bool 	mValidated; // lazy validation flag
-
 	private:
 
 		BlockDescriptor::all_params_list_t::iterator	mCurParam;
@@ -2358,16 +2475,14 @@ namespace LLInitParam
 		typedef T									default_value_t;
 
 		ParamValue()
-		:	T(),
-			mValidated(false)
+		:	T()
 		{}
 	
 		ParamValue(const default_value_t& value)
-		:	T(value.getValue()),
-			mValidated(false)
+		:	T(value.getValue())
 		{}
 
-		mutable bool 	mValidated; // lazy validation flag
+		bool isValid() const { return true; }
 	};
 
 	template<typename T, typename BLOCK_T>
@@ -2380,18 +2495,15 @@ namespace LLInitParam
 		typedef LazyValue<T>						default_value_t;
 	
 		ParamValue()
-		:	mValue(),
-			mValidated(false)
+		:	mValue()
 		{}
 
 		ParamValue(const default_value_t& other)
-		:	mValue(other),
-			mValidated(false)
+		:	mValue(other)
 		{}
 
 		ParamValue(const T& value)
-		:	mValue(value),
-			mValidated(false)
+		:	mValue(value)
 		{}
 
 		void setValue(const value_t& val)
@@ -2414,14 +2526,14 @@ namespace LLInitParam
 			return mValue.get().deserializeBlock(p, name_stack_range, new_name);
 		}
 
-		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const self_t* diff_block = NULL) const
+		bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const self_t* diff_block = NULL) const
 		{
-			if (mValue.empty()) return;
+			if (mValue.empty()) return false;
 			
 			const BaseBlock* base_block = (diff_block && !diff_block->mValue.empty())
 											? &(diff_block->mValue.get().getValue())
 											: NULL;
-			mValue.get().serializeBlock(p, name_stack, base_block);
+			return mValue.get().serializeBlock(p, name_stack, predicate_rule, base_block);
 		}
 
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
@@ -2433,26 +2545,29 @@ namespace LLInitParam
 		{
 			return source.mValue.empty() || mValue.get().mergeBlock(block_data, source.getValue(), overwrite);
 		}
-			
+
 		bool validateBlock(bool emit_errors = true) const
 		{
 			return mValue.empty() || mValue.get().validateBlock(emit_errors);
 		}
 
+		bool isValid() const
+		{
+			return validateBlock(false);
+		}
+
 		static BlockDescriptor& getBlockDescriptor()
 		{
 			return value_t::getBlockDescriptor();
 		}
 
-		mutable bool 	mValidated; // lazy validation flag
-
 	private:
 		LazyValue<T>	mValue;
 	};
 
 	template<typename T, typename BLOCK_T>
 	class ParamValue <BaseBlock::Lazy<T, NOT_BLOCK>, BLOCK_T>
-		{
+	{
 		typedef ParamValue <BaseBlock::Lazy<T, NOT_BLOCK>, BLOCK_T> self_t;
 
 	public:
@@ -2460,18 +2575,15 @@ namespace LLInitParam
 		typedef LazyValue<T>						default_value_t;
 
 		ParamValue()
-		:	mValue(),
-			mValidated(false)
+		:	mValue()
 		{}
 
 		ParamValue(const default_value_t& other)
-		:	mValue(other),
-			mValidated(false)
+		:	mValue(other)
 		{}
 
 		ParamValue(const T& value)
-		:	mValue(value),
-			mValidated(false)
+		:	mValue(value)
 		{}
 			
 		void setValue(const value_t& val)
@@ -2489,7 +2601,10 @@ namespace LLInitParam
 			return mValue.get().getValue();
 		}
 
-		mutable bool 	mValidated; // lazy validation flag
+		bool isValid() const
+		{
+			return true;
+		}
 
 	private:
 		LazyValue<T>	mValue;
@@ -2504,12 +2619,10 @@ namespace LLInitParam
 		typedef LLSD			default_value_t;
 
 		ParamValue()
-		:	mValidated(false)
 		{}
 
 		ParamValue(const default_value_t& other)
-		:	mValue(other),
-			mValidated(false)
+		:	mValue(other)
 		{}
 
 		void setValue(const value_t& val) { mValue = val; }
@@ -2519,16 +2632,13 @@ namespace LLInitParam
 
 		// block param interface
 		LL_COMMON_API bool deserializeBlock(Parser& p, Parser::name_stack_range_t& name_stack_range, bool new_name);
-		LL_COMMON_API void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const;
+		LL_COMMON_API bool serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const BaseBlock* diff_block = NULL) const;
 		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
 		{
 			//TODO: implement LLSD params as schema type Any
 			return true;
 		}
 
-	protected:
-		mutable bool 	mValidated; // lazy validation flag
-
 	private:
 		static void serializeElement(Parser& p, const LLSD& sd, Parser::name_stack_t& name_stack);
 
@@ -2547,18 +2657,17 @@ namespace LLInitParam
 			BLOCK_AUTHORITATIVE		// mValue is derived from the block parameters, which are authoritative
 		} EValueAge;
 
-		typedef ParamValue<T>			derived_t;
-		typedef CustomParamValue<T>				self_t;
-		typedef Block<derived_t>				block_t;
+		typedef TypeValues<T>			derived_t;
+		typedef CustomParamValue<T>		self_t;
+		typedef Block<ParamValue<T> >	block_t;
 		typedef T						default_value_t;
-		typedef T								value_t;
+		typedef T						value_t;
 		typedef void					baseblock_base_class_t;
 
 
 		CustomParamValue(const default_value_t& value = T())
 		:	mValue(value),
-			mValueAge(VALUE_AUTHORITATIVE),
-			mValidated(false)
+			mValueAge(VALUE_AUTHORITATIVE)
 		{}
 
 		bool deserializeBlock(Parser& parser, Parser::name_stack_range_t& name_stack_range, bool new_name)
@@ -2580,16 +2689,30 @@ namespace LLInitParam
 			return typed_param.BaseBlock::deserializeBlock(parser, name_stack_range, new_name);
 		}
 
-		void serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const
+		bool serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const predicate_rule_t predicate_rule, const BaseBlock* diff_block = NULL) const
 		{
 			const derived_t& typed_param = static_cast<const derived_t&>(*this);
 			const derived_t* diff_param = static_cast<const derived_t*>(diff_block);
 			
+			//std::string key = typed_param.getValueName();
+
+			//// first try to write out name of name/value pair
+			//if (!key.empty())
+			//{
+			//	if (!diff_param || !ParamCompare<std::string>::equals(diff_param->getValueName(), key))
+			//	{
+			//		return parser.writeValue(key, name_stack);
+			//	}
+			//}
 			// then try to serialize value directly
 			if (!diff_param || !ParamCompare<T>::equals(typed_param.getValue(), diff_param->getValue()))
             {
 				
-				if (!parser.writeValue(typed_param.getValue(), name_stack)) 
+				if (parser.writeValue(typed_param.getValue(), name_stack)) 
+				{
+					return true;
+				}
+				else
 				{
 					//RN: *always* serialize provided components of BlockValue (don't pass diff_param on),
 					// since these tend to be viewed as the constructor arguments for the value T.  It seems
@@ -2606,14 +2729,15 @@ namespace LLInitParam
 						// and serialize those params
 						derived_t copy(typed_param);
 						copy.updateBlockFromValue(true);
-						copy.block_t::serializeBlock(parser, name_stack, NULL);
+						return copy.block_t::serializeBlock(parser, name_stack, predicate_rule, NULL);
 					}
 					else
 					{
-						block_t::serializeBlock(parser, name_stack, NULL);
+						return block_t::serializeBlock(parser, name_stack, predicate_rule, NULL);
 					}
 				}
 			}
+			return false;
 		}
 
 		bool validateBlock(bool emit_errors = true) const
@@ -2705,8 +2829,6 @@ namespace LLInitParam
 			return block_t::mergeBlock(block_data, source, overwrite);
 		}
 
-		mutable bool 		mValidated; // lazy validation flag
-
 	private:
 		mutable T			mValue;
 		mutable EValueAge	mValueAge;
diff --git a/indra/llcommon/llinstancetracker.cpp b/indra/llcommon/llinstancetracker.cpp
index 5dc3ea5d7b..7ff8324fe3 100755
--- a/indra/llcommon/llinstancetracker.cpp
+++ b/indra/llcommon/llinstancetracker.cpp
@@ -27,23 +27,25 @@
 #include "linden_common.h"
 // associated header
 #include "llinstancetracker.h"
+#include "llapr.h"
+
 // STL headers
 // std headers
 // external library headers
 // other Linden headers
 
-//static 
-void * & LLInstanceTrackerBase::getInstances(std::type_info const & info)
+void LLInstanceTrackerBase::StaticBase::incrementDepth()
+{
+	apr_atomic_inc32(&sIterationNestDepth);
+}
+
+void LLInstanceTrackerBase::StaticBase::decrementDepth()
 {
-	typedef std::map<std::string, void *> InstancesMap;
-	static InstancesMap instances;
+	apr_atomic_dec32(&sIterationNestDepth);
+}
 
-	// std::map::insert() is just what we want here. You attempt to insert a
-	// (key, value) pair. If the specified key doesn't yet exist, it inserts
-	// the pair and returns a std::pair of (iterator, true). If the specified
-	// key DOES exist, insert() simply returns (iterator, false). One lookup
-	// handles both cases.
-	return instances.insert(InstancesMap::value_type(info.name(),
-													 InstancesMap::mapped_type()))
-		.first->second;
+U32 LLInstanceTrackerBase::StaticBase::getDepth()
+{
+	apr_uint32_t data = apr_atomic_read32(&sIterationNestDepth);
+	return data;
 }
diff --git a/indra/llcommon/llinstancetracker.h b/indra/llcommon/llinstancetracker.h
index 1eab270e3c..c8e1d9cd84 100755
--- a/indra/llcommon/llinstancetracker.h
+++ b/indra/llcommon/llinstancetracker.h
@@ -46,22 +46,6 @@
 class LL_COMMON_API LLInstanceTrackerBase
 {
 protected:
-	/// Get a process-unique void* pointer slot for the specified type_info
-	static void * & getInstances(std::type_info const & info);
-
-	/// Find or create a STATICDATA instance for the specified TRACKED class.
-	/// STATICDATA must be default-constructible.
-	template<typename STATICDATA, class TRACKED>
-	static STATICDATA& getStatic()
-	{
-		void *& instances = getInstances(typeid(TRACKED));
-		if (! instances)
-		{
-			instances = new STATICDATA;
-		}
-		return *static_cast<STATICDATA*>(instances);
-	}
-
     /// It's not essential to derive your STATICDATA (for use with
     /// getStatic()) from StaticBase; it's just that both known
     /// implementations do.
@@ -70,15 +54,21 @@ protected:
         StaticBase():
             sIterationNestDepth(0)
         {}
-        S32 sIterationNestDepth;
+
+		void incrementDepth();
+		void decrementDepth();
+		U32 getDepth();
+	private:
+		U32 sIterationNestDepth;
     };
 };
 
 /// This mix-in class adds support for tracking all instances of the specified class parameter T
 /// The (optional) key associates a value of type KEY with a given instance of T, for quick lookup
 /// If KEY is not provided, then instances are stored in a simple set
-/// @NOTE: see explicit specialization below for default KEY==T* case
-template<typename T, typename KEY = T*>
+/// @NOTE: see explicit specialization below for default KEY==void case
+/// @NOTE: this class is not thread-safe unless used as read-only
+template<typename T, typename KEY = void>
 class LLInstanceTracker : public LLInstanceTrackerBase
 {
 	typedef LLInstanceTracker<T, KEY> MyT;
@@ -87,7 +77,7 @@ class LLInstanceTracker : public LLInstanceTrackerBase
 	{
 		InstanceMap sMap;
 	};
-	static StaticData& getStatic() { return LLInstanceTrackerBase::getStatic<StaticData, MyT>(); }
+	static StaticData& getStatic() { static StaticData sData; return sData;}
 	static InstanceMap& getMap_() { return getStatic().sMap; }
 
 public:
@@ -99,12 +89,12 @@ public:
 		instance_iter(const typename InstanceMap::iterator& it)
 		:	mIterator(it)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		~instance_iter()
 		{
-			--getStatic().sIterationNestDepth;
+			getStatic().decrementDepth();
 		}
 
 
@@ -131,20 +121,20 @@ public:
 		typedef boost::iterator_facade<key_iter, KEY, boost::forward_traversal_tag> super_t;
 
 		key_iter(typename InstanceMap::iterator it)
-			:	mIterator(it)
+		:	mIterator(it)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		key_iter(const key_iter& other)
-			:	mIterator(other.mIterator)
+		:	mIterator(other.mIterator)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		~key_iter()
 		{
-			--getStatic().sIterationNestDepth;
+			getStatic().decrementDepth();
 		}
 
 
@@ -182,7 +172,10 @@ public:
 		return instance_iter(getMap_().end());
 	}
 
-	static S32 instanceCount() { return getMap_().size(); }
+	static S32 instanceCount() 
+	{ 
+		return getMap_().size(); 
+	}
 
 	static key_iter beginKeys()
 	{
@@ -203,7 +196,7 @@ protected:
 	virtual ~LLInstanceTracker() 
 	{ 
 		// it's unsafe to delete instances of this type while all instances are being iterated over.
-		llassert_always(getStatic().sIterationNestDepth == 0);
+		llassert_always(getStatic().getDepth() == 0);
 		remove_();		
 	}
 	virtual void setKey(KEY key) { remove_(); add_(key); }
@@ -227,18 +220,18 @@ private:
 	KEY mInstanceKey;
 };
 
-/// explicit specialization for default case where KEY is T*
+/// explicit specialization for default case where KEY is void
 /// use a simple std::set<T*>
 template<typename T>
-class LLInstanceTracker<T, T*> : public LLInstanceTrackerBase
+class LLInstanceTracker<T, void> : public LLInstanceTrackerBase
 {
-	typedef LLInstanceTracker<T, T*> MyT;
+	typedef LLInstanceTracker<T, void> MyT;
 	typedef typename std::set<T*> InstanceSet;
 	struct StaticData: public StaticBase
 	{
 		InstanceSet sSet;
 	};
-	static StaticData& getStatic() { return LLInstanceTrackerBase::getStatic<StaticData, MyT>(); }
+	static StaticData& getStatic() { static StaticData sData; return sData; }
 	static InstanceSet& getSet_() { return getStatic().sSet; }
 
 public:
@@ -265,18 +258,18 @@ public:
 		instance_iter(const typename InstanceSet::iterator& it)
 		:	mIterator(it)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		instance_iter(const instance_iter& other)
 		:	mIterator(other.mIterator)
 		{
-			++getStatic().sIterationNestDepth;
+			getStatic().incrementDepth();
 		}
 
 		~instance_iter()
 		{
-			--getStatic().sIterationNestDepth;
+			getStatic().decrementDepth();
 		}
 
 	private:
@@ -309,7 +302,7 @@ protected:
 	virtual ~LLInstanceTracker()
 	{
 		// it's unsafe to delete instances of this type while all instances are being iterated over.
-		llassert_always(getStatic().sIterationNestDepth == 0);
+		llassert_always(getStatic().getDepth() == 0);
 		getSet_().erase(static_cast<T*>(this));
 	}
 
diff --git a/indra/llcommon/lllazy.h b/indra/llcommon/lllazy.h
deleted file mode 100755
index 5f3bbce79e..0000000000
--- a/indra/llcommon/lllazy.h
+++ /dev/null
@@ -1,399 +0,0 @@
-/**
- * @file   lllazy.h
- * @author Nat Goodspeed
- * @date   2009-01-22
- * @brief  Lazy instantiation of specified type. Useful in conjunction with
- *         Michael Feathers's "Extract and Override Getter" ("Working
- *         Effectively with Legacy Code", p. 352).
- *
- * Quoting his synopsis of steps on p.355:
- *
- * 1. Identify the object you need a getter for.
- * 2. Extract all of the logic needed to create the object into a getter.
- * 3. Replace all uses of the object with calls to the getter, and initialize
- *    the reference that holds the object to null in all constructors.
- * 4. Add the first-time logic to the getter so that the object is constructed
- *    and assigned to the reference whenever the reference is null.
- * 5. Subclass the class and override the getter to provide an alternative
- *    object for testing.
- *
- * It's the second half of bullet 3 (3b, as it were) that bothers me. I find
- * it all too easy to imagine adding pointer initializers to all but one
- * constructor... the one not exercised by my tests. That suggested using
- * (e.g.) boost::scoped_ptr<MyObject> so you don't have to worry about
- * destroying it either.
- *
- * However, introducing additional machinery allows us to encapsulate bullet 4
- * as well.
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#if ! defined(LL_LLLAZY_H)
-#define LL_LLLAZY_H
-
-#include <boost/function.hpp>
-#include <boost/scoped_ptr.hpp>
-#include <boost/lambda/construct.hpp>
-#include <stdexcept>
-
-/// LLLazyCommon simply factors out of LLLazy<T> things that don't depend on
-/// its template parameter.
-class LLLazyCommon
-{
-public:
-    /**
-     * This exception is thrown if you try to replace an LLLazy<T>'s factory
-     * (or T* instance) after it already has an instance in hand. Since T
-     * might well be stateful, we can't know the effect of silently discarding
-     * and replacing an existing instance, so we disallow it. This facility is
-     * intended for testing, and in a test scenario we can definitely control
-     * that.
-     */
-    struct InstanceChange: public std::runtime_error
-    {
-        InstanceChange(const std::string& what): std::runtime_error(what) {}
-    };
-
-protected:
-    /**
-     * InstanceChange might be appropriate in a couple of different LLLazy<T>
-     * methods. Factor out the common logic.
-     */
-    template <typename PTR>
-    static void ensureNoInstance(const PTR& ptr)
-    {
-        if (ptr)
-        {
-            // Too late: we've already instantiated the lazy object. We don't
-            // know whether it's stateful or not, so it's not safe to discard
-            // the existing instance in favor of a replacement.
-            throw InstanceChange("Too late to replace LLLazy instance");
-        }
-    }
-};
-
-/**
- * LLLazy<T> is useful when you have an outer class Outer that you're trying
- * to bring under unit test, that contains a data member difficult to
- * instantiate in a test harness. Typically the data member's class Inner has
- * many thorny dependencies. Feathers generally advocates "Extract and
- * Override Factory Method" (p. 350). But in C++, you can't call a derived
- * class override of a virtual method from the derived class constructor,
- * which limits applicability of "Extract and Override Factory Method." For
- * such cases Feathers presents "Extract and Override Getter" (p. 352).
- *
- * So we'll assume that your class Outer contains a member like this:
- * @code
- * Inner mInner;
- * @endcode
- *
- * LLLazy<Inner> can be used to replace this member. You can directly declare:
- * @code
- * LLLazy<Inner> mInner;
- * @endcode
- * and change references to mInner accordingly.
- *
- * (Alternatively, you can add a base class of the form
- * <tt>LLLazyBase<Inner></tt>. This is discussed further in the LLLazyBase<T>
- * documentation.)
- *
- * LLLazy<T> binds a <tt>boost::scoped_ptr<T></tt> and a factory functor
- * returning T*. You can either bind that functor explicitly or let it default
- * to the expression <tt>new T()</tt>.
- *
- * As long as LLLazy<T> remains unreferenced, its T remains uninstantiated.
- * The first time you use get(), <tt>operator*()</tt> or <tt>operator->()</tt>
- * it will instantiate its T and thereafter behave like a pointer to it.
- *
- * Thus, any existing reference to <tt>mInner.member</tt> should be replaced
- * with <tt>mInner->member</tt>. Any simple reference to @c mInner should be
- * replaced by <tt>*mInner</tt>.
- *
- * (If the original declaration was a pointer initialized in Outer's
- * constructor, e.g. <tt>Inner* mInner</tt>, so much the better. In that case
- * you should be able to drop in <tt>LLLazy<Inner></tt> without much change.)
- *
- * The support for "Extract and Override Getter" lies in the fact that you can
- * replace the factory functor -- or provide an explicit T*. Presumably this
- * is most useful from a test subclass -- which suggests that your @c mInner
- * member should be @c protected.
- *
- * Note that <tt>boost::lambda::new_ptr<T>()</tt> makes a dandy factory
- * functor, for either the set() method or LLLazy<T>'s constructor. If your T
- * requires constructor arguments, use an expression more like
- * <tt>boost::lambda::bind(boost::lambda::new_ptr<T>(), arg1, arg2, ...)</tt>.
- *
- * Of course the point of replacing the functor is to substitute a class that,
- * though referenced as Inner*, is not an Inner; presumably this is a testing
- * subclass of Inner (e.g. TestInner). Thus your test subclass TestOuter for
- * the containing class Outer will contain something like this:
- * @code
- * class TestOuter: public Outer
- * {
- * public:
- *     TestOuter()
- *     {
- *         // mInner must be 'protected' rather than 'private'
- *         mInner.set(boost::lambda::new_ptr<TestInner>());
- *     }
- *     ...
- * };
- * @endcode
- */
-template <typename T>
-class LLLazy: public LLLazyCommon
-{
-public:
-    /// Any nullary functor returning T* will work as a Factory
-    typedef boost::function<T* ()> Factory;
-
-    /// The default LLLazy constructor uses <tt>new T()</tt> as its Factory
-    LLLazy():
-        mFactory(boost::lambda::new_ptr<T>())
-    {}
-
-    /// Bind an explicit Factory functor
-    LLLazy(const Factory& factory):
-        mFactory(factory)
-    {}
-
-    /// Reference T, instantiating it if this is the first access
-    const T& get() const
-    {
-        if (! mInstance)
-        {
-            // use the bound Factory functor
-            mInstance.reset(mFactory());
-        }
-        return *mInstance;
-    }
-
-    /// non-const get()
-    T& get()
-    {
-        return const_cast<T&>(const_cast<const LLLazy<T>*>(this)->get());
-    }
-
-    /// operator*() is equivalent to get()
-    const T& operator*() const { return get(); }
-    /// operator*() is equivalent to get()
-    T& operator*() { return get(); }
-
-    /**
-     * operator->() must return (something resembling) T*. It's tempting to
-     * return the underlying boost::scoped_ptr<T>, but that would require
-     * breaking out the lazy-instantiation logic from get() into a common
-     * private method. Assume the pointer used for operator->() access is very
-     * short-lived.
-     */
-    const T* operator->() const { return &get(); }
-    /// non-const operator->()
-    T* operator->() { return &get(); }
-
-    /// set(Factory). This will throw InstanceChange if mInstance has already
-    /// been set.
-    void set(const Factory& factory)
-    {
-        ensureNoInstance(mInstance);
-        mFactory = factory;
-    }
-
-    /// set(T*). This will throw InstanceChange if mInstance has already been
-    /// set.
-    void set(T* instance)
-    {
-        ensureNoInstance(mInstance);
-        mInstance.reset(instance);
-    }
-
-private:
-    Factory mFactory;
-    // Consider an LLLazy<T> member of a class we're accessing by const
-    // reference. We want to allow even const methods to touch the LLLazy<T>
-    // member. Hence the actual pointer must be mutable because such access
-    // might assign it.
-    mutable boost::scoped_ptr<T> mInstance;
-};
-
-#if (! defined(__GNUC__)) || (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ > 3)
-// Not gcc at all, or a gcc more recent than gcc 3.3
-#define GCC33 0
-#else
-#define GCC33 1
-#endif
-
-/**
- * LLLazyBase<T> wraps LLLazy<T>, giving you an alternative way to replace
- * <tt>Inner mInner;</tt>. Instead of coding <tt>LLLazy<Inner> mInner</tt>,
- * you can add LLLazyBase<Inner> to your Outer class's bases, e.g.:
- * @code
- * class Outer: public LLLazyBase<Inner>
- * {
- *     ...
- * };
- * @endcode
- *
- * This gives you @c public get() and @c protected set() methods without
- * having to make your LLLazy<Inner> member @c protected. The tradeoff is that
- * you must access the wrapped LLLazy<Inner> using get() and set() rather than
- * with <tt>operator*()</tt> or <tt>operator->()</tt>.
- *
- * This mechanism can be used for more than one member, but only if they're of
- * different types. That is, you can replace:
- * @code
- * DifficultClass mDifficult;
- * AwkwardType    mAwkward;
- * @endcode
- * with:
- * @code
- * class Outer: public LLLazyBase<DifficultClass>, public LLLazyBase<AwkwardType>
- * {
- *     ...
- * };
- * @endcode
- * but for a situation like this:
- * @code
- * DifficultClass mMainDifficult, mAuxDifficult;
- * @endcode
- * you should directly embed LLLazy<DifficultClass> (q.v.).
- *
- * For multiple LLLazyBase bases, e.g. the <tt>LLLazyBase<DifficultClass>,
- * LLLazyBase<AwkwardType></tt> example above, access the relevant get()/set()
- * as (e.g.) <tt>LLLazyBase<DifficultClass>::get()</tt>. (This is why you
- * can't have multiple LLLazyBase<T> of the same T.) For a bit of syntactic
- * sugar, please see getLazy()/setLazy().
- */
-template <typename T>
-class LLLazyBase
-{
-public:
-    /// invoke default LLLazy constructor
-    LLLazyBase() {}
-    /// make wrapped LLLazy bind an explicit Factory
-    LLLazyBase(const typename LLLazy<T>::Factory& factory):
-        mInstance(factory)
-    {}
-
-    /// access to LLLazy::get()
-    T& get() { return *mInstance; }
-    /// access to LLLazy::get()
-    const T& get() const { return *mInstance; }
-
-protected:
-    // see getLazy()/setLazy()
-    #if (! GCC33)
-    template <typename T2, class MYCLASS> friend T2& getLazy(MYCLASS* this_);
-    template <typename T2, class MYCLASS> friend const T2& getLazy(const MYCLASS* this_);
-    #else // gcc 3.3
-    template <typename T2, class MYCLASS> friend T2& getLazy(const MYCLASS* this_);
-    #endif // gcc 3.3
-    template <typename T2, class MYCLASS> friend void setLazy(MYCLASS* this_, T2* instance);
-    template <typename T2, class MYCLASS>
-    friend void setLazy(MYCLASS* this_, const typename LLLazy<T2>::Factory& factory);
-
-    /// access to LLLazy::set(Factory)
-    void set(const typename LLLazy<T>::Factory& factory)
-    {
-        mInstance.set(factory);
-    }
-
-    /// access to LLLazy::set(T*)
-    void set(T* instance)
-    {
-        mInstance.set(instance);
-    }
-
-private:
-    LLLazy<T> mInstance;
-};
-
-/**
- * @name getLazy()/setLazy()
- * Suppose you have something like the following:
- * @code
- * class Outer: public LLLazyBase<DifficultClass>, public LLLazyBase<AwkwardType>
- * {
- *     ...
- * };
- * @endcode
- *
- * Your methods can reference the @c DifficultClass instance using
- * <tt>LLLazyBase<DifficultClass>::get()</tt>, which is admittedly a bit ugly.
- * Alternatively, you can write <tt>getLazy<DifficultClass>(this)</tt>, which
- * is somewhat more straightforward to read.
- *
- * Similarly,
- * @code
- * LLLazyBase<DifficultClass>::set(new TestDifficultClass());
- * @endcode
- * could instead be written:
- * @code
- * setLazy<DifficultClass>(this, new TestDifficultClass());
- * @endcode
- *
- * @note
- * I wanted to provide getLazy() and setLazy() without explicitly passing @c
- * this. That would imply making them methods on a base class rather than free
- * functions. But if <tt>LLLazyBase<T></tt> derives normally from (say) @c
- * LLLazyGrandBase providing those methods, then unqualified getLazy() would
- * be ambiguous: you'd have to write <tt>LLLazyBase<T>::getLazy<T>()</tt>,
- * which is even uglier than <tt>LLLazyBase<T>::get()</tt>, and therefore
- * pointless. You can make the compiler not care which @c LLLazyGrandBase
- * instance you're talking about by making @c LLLazyGrandBase a @c virtual
- * base class of @c LLLazyBase. But in that case,
- * <tt>LLLazyGrandBase::getLazy<T>()</tt> can't access
- * <tt>LLLazyBase<T>::get()</tt>!
- *
- * We want <tt>getLazy<T>()</tt> to access <tt>LLLazyBase<T>::get()</tt> as if
- * in the lexical context of some subclass method. Ironically, free functions
- * let us do that better than methods on a @c virtual base class -- but that
- * implies passing @c this explicitly. So be it.
- */
-//@{
-#if (! GCC33)
-template <typename T, class MYCLASS>
-T& getLazy(MYCLASS* this_) { return this_->LLLazyBase<T>::get(); }
-template <typename T, class MYCLASS>
-const T& getLazy(const MYCLASS* this_) { return this_->LLLazyBase<T>::get(); }
-#else // gcc 3.3
-// For const-correctness, we really should have two getLazy() variants: one
-// accepting const MYCLASS* and returning const T&, the other accepting
-// non-const MYCLASS* and returning non-const T&. This works fine on the Mac
-// (gcc 4.0.1) and Windows (MSVC 8.0), but fails on our Linux 32-bit Debian
-// Sarge stations (gcc 3.3.5). Since I really don't know how to beat that aging
-// compiler over the head to make it do the right thing, I'm going to have to
-// move forward with the wrong thing: a single getLazy() function that accepts
-// const MYCLASS* and returns non-const T&.
-template <typename T, class MYCLASS>
-T& getLazy(const MYCLASS* this_) { return const_cast<MYCLASS*>(this_)->LLLazyBase<T>::get(); }
-#endif // gcc 3.3
-template <typename T, class MYCLASS>
-void setLazy(MYCLASS* this_, T* instance) { this_->LLLazyBase<T>::set(instance); }
-template <typename T, class MYCLASS>
-void setLazy(MYCLASS* this_, const typename LLLazy<T>::Factory& factory)
-{
-    this_->LLLazyBase<T>::set(factory);
-}
-//@}
-
-#endif /* ! defined(LL_LLLAZY_H) */
diff --git a/indra/llcommon/llleap.cpp b/indra/llcommon/llleap.cpp
index 0a57ef1c48..84d2a12f65 100755
--- a/indra/llcommon/llleap.cpp
+++ b/indra/llcommon/llleap.cpp
@@ -394,7 +394,7 @@ public:
         LLProcess::WritePipe& childin(mChild->getWritePipe(LLProcess::STDIN));
         LLEventPump& mainloop(LLEventPumps::instance().obtain("mainloop"));
         LLSD nop;
-        F64 until(LLTimer::getElapsedSeconds() + 2);
+        F64 until = (LLTimer::getElapsedSeconds() + 2).value();
         while (childin.size() && LLTimer::getElapsedSeconds() < until)
         {
             mainloop.post(nop);
diff --git a/indra/llcommon/lllocalidhashmap.h b/indra/llcommon/lllocalidhashmap.h
deleted file mode 100755
index 8f4f91a560..0000000000
--- a/indra/llcommon/lllocalidhashmap.h
+++ /dev/null
@@ -1,895 +0,0 @@
-/** 
- * @file lllocalidhashmap.h
- * @brief Map specialized for dealing with local ids
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLLOCALIDHASHMAP_H
-#define LL_LLLOCALIDHASHMAP_H
-
-#include "stdtypes.h"
-#include "llerror.h"
-
-const S32 MAX_ITERS = 4;
-// LocalID hash map
-
-//
-// LLLocalIDHashNode
-//
-
-template <class DATA, int SIZE>
-class LLLocalIDHashNode
-{
-public:
-	LLLocalIDHashNode();
-
-public:
-	S32 mCount;
-	U32	mKey[SIZE];
-	DATA mData[SIZE];
-	LLLocalIDHashNode<DATA, SIZE> *mNextNodep;
-};
-
-
-//
-// LLLocalIDHashNode implementation
-//
-template <class DATA, int SIZE>
-LLLocalIDHashNode<DATA, SIZE>::LLLocalIDHashNode()
-{
-	mCount = 0;
-	mNextNodep = NULL;
-}
-
-//
-// LLLocalIDHashMapIter
-//
-template <class DATA_TYPE, int SIZE>
-class LLLocalIDHashMap;
-
-template <class DATA_TYPE, int SIZE>
-class LLLocalIDHashMapIter
-{
-public:
-	LLLocalIDHashMapIter(LLLocalIDHashMap<DATA_TYPE, SIZE> *hash_mapp);
-	~LLLocalIDHashMapIter();
-
-	void setMap(LLLocalIDHashMap<DATA_TYPE, SIZE> *hash_mapp);
-	inline void first();
-	inline void next();
-	inline DATA_TYPE& current(); // *NOTE: Deprecate? Phoenix 2005-04-15
-	inline BOOL done() const;
-	inline S32  currentBin() const;
-	inline void setBin(S32 bin);
-
-	DATA_TYPE& operator*() const
-	{
-		return mCurHashNodep->mData[mCurHashNodeKey];
-	}
-	DATA_TYPE* operator->() const
-	{
-		return &(operator*());
-	}
-
-	LLLocalIDHashMap<DATA_TYPE, SIZE> *mHashMapp;
-	LLLocalIDHashNode<DATA_TYPE, SIZE> *mCurHashNodep;
-
-	S32 mCurHashMapNodeNum;
-	S32 mCurHashNodeKey;
-
-	DATA_TYPE mNull;
-
-	S32 mIterID;
-};
-
-
-
-template <class DATA_TYPE, int SIZE>
-class LLLocalIDHashMap
-{
-public:
-	friend class LLLocalIDHashMapIter<DATA_TYPE, SIZE>;
-
-	LLLocalIDHashMap(); // DO NOT use this unless you explicitly setNull, or the data type constructs a "null"
-						// object by default
-	// basic constructor including sorter
-	LLLocalIDHashMap(const DATA_TYPE &null_data);
-	// Hack, this should really be a const ref, but I'm not doing it that way because the sim
-	// usually uses pointers.
-	~LLLocalIDHashMap();
-
-	inline DATA_TYPE &get(const U32 local_id);
-	inline BOOL check(const U32 local_id) const;
-	inline DATA_TYPE &set(const U32 local_id, const DATA_TYPE data);
-	inline BOOL remove(const U32 local_id);
-	void removeAll();
-
-	void setNull(const DATA_TYPE data) { mNull = data; }
-
-	inline S32 getLength() const; // Warning, NOT O(1!)
-
-	void dumpIter();
-	void dumpBin(U32 bin);
-
-protected:
-	// Only used by the iterator.
-	void addIter(LLLocalIDHashMapIter<DATA_TYPE, SIZE> *iter);
-	void removeIter(LLLocalIDHashMapIter<DATA_TYPE, SIZE> *iter);
-
-	// Remove the item and shift all items afterward down the list,
-	// fixing up iterators as we go.
-	BOOL removeWithShift(const U32 local_id);
-
-protected:
-	LLLocalIDHashNode<DATA_TYPE, SIZE> mNodes[256];
-
-	S32 mIterCount;
-	LLLocalIDHashMapIter<DATA_TYPE, SIZE> *mIters[MAX_ITERS];
-
-	DATA_TYPE mNull;
-};
-
-
-//
-// LLLocalIDHashMap implementation
-//
-
-template <class DATA_TYPE, int SIZE>
-LLLocalIDHashMap<DATA_TYPE, SIZE>::LLLocalIDHashMap()
-:	mIterCount(0),
-	mNull()
-{
-	S32 i;
-	for (i = 0; i < MAX_ITERS; i++)
-	{
-		mIters[i] = NULL;
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-LLLocalIDHashMap<DATA_TYPE, SIZE>::LLLocalIDHashMap(const DATA_TYPE &null_data)
-:	mIterCount(0),
-	mNull(null_data)
-{
-	S32 i;
-	for (i = 0; i < MAX_ITERS; i++)
-	{
-		mIters[i] = NULL;
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-LLLocalIDHashMap<DATA_TYPE, SIZE>::~LLLocalIDHashMap()
-{
-	S32 i;
-	for (i = 0; i < MAX_ITERS; i++)
-	{
-		if (mIters[i])
-		{
-			mIters[i]->mHashMapp = NULL;
-			mIterCount--;
-		}
-	}
-	removeAll();
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLLocalIDHashMap<DATA_TYPE, SIZE>::removeAll()
-{
-	S32 bin;
-	for (bin = 0; bin < 256; bin++)
-	{
-		LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[bin];
-
-		BOOL first = TRUE;
-		do // First node guaranteed to be there
-		{
-			S32 i;
-			const S32 count = nodep->mCount;
-
-			// Iterate through all members of this node
-			for (i = 0; i < count; i++)
-			{
-				nodep->mData[i] = mNull;
-			}
-
-			nodep->mCount = 0;
-			// Done with all objects in this node, go to the next.
-
-			LLLocalIDHashNode<DATA_TYPE, SIZE>* curp = nodep;
-			nodep = nodep->mNextNodep;
-
-			// Delete the node if it's not the first node
-			if (first)
-			{
-				first = FALSE;
-				curp->mNextNodep = NULL;
-			}
-			else
-			{
-				delete curp;
-			}
-		} while (nodep);
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLLocalIDHashMap<DATA_TYPE, SIZE>::dumpIter()
-{
-	std::cout << "Hash map with " << mIterCount << " iterators" << std::endl;
-
-	std::cout << "Hash Map Iterators:" << std::endl;
-	S32 i;
-	for (i = 0; i < MAX_ITERS; i++)
-	{
-		if (mIters[i])
-		{
-			llinfos << i << " " << mIters[i]->mCurHashNodep << " " << mIters[i]->mCurHashNodeKey << llendl;
-		}
-		else
-		{
-			llinfos << i << "null" << llendl;
-		}
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLLocalIDHashMap<DATA_TYPE, SIZE>::dumpBin(U32 bin)
-{
-	std::cout << "Dump bin " << bin << std::endl;
-
-	LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[bin];
-	S32 node = 0;
-	do // First node guaranteed to be there.
-	{
-		std::cout << "Bin " << bin 
-			<< " node " << node
-			<< " count " << nodep->mCount
-			<< " contains " << std::flush;
-
-		S32 i;
-		for (i = 0; i < nodep->mCount; i++)
-		{
-			std::cout << nodep->mData[i] << " " << std::flush;
-		}
-
-		std::cout << std::endl;
-
-		nodep = nodep->mNextNodep;
-		node++;
-	} while (nodep);
-}
-
-template <class DATA_TYPE, int SIZE>
-inline S32 LLLocalIDHashMap<DATA_TYPE, SIZE>::getLength() const
-{
-	S32 count = 0;
-	S32 bin;
-	for (bin = 0; bin < 256; bin++)
-	{
-		const LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[bin];
-		while (nodep)
-		{
-			count += nodep->mCount;
-			nodep = nodep->mNextNodep;
-		}
-	}
-	return count;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline DATA_TYPE &LLLocalIDHashMap<DATA_TYPE, SIZE>::get(const U32 local_id)
-{
-	LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[local_id & 0xff];
-
-	do // First node guaranteed to be there
-	{
-		S32 i;
-		const S32 count = nodep->mCount;
-
-		// Iterate through all members of this node
-		for (i = 0; i < count; i++)
-		{
-			if (nodep->mKey[i] == local_id)
-			{
-				// We found it.
-				return nodep->mData[i];
-			}
-		}
-
-		// Done with all objects in this node, go to the next.
-		nodep = nodep->mNextNodep;
-	} while (nodep);
-
-	return mNull;
-}
-
-
-template <class DATA_TYPE, int SIZE>
-inline BOOL LLLocalIDHashMap<DATA_TYPE, SIZE>::check(const U32 local_id) const
-{
-	const LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[local_id & 0xff];
-
-	do // First node guaranteed to be there
-	{
-		S32 i;
-		const S32 count = nodep->mCount;
-
-		// Iterate through all members of this node
-		for (i = 0; i < count; i++)
-		{
-			if (nodep->mKey[i] == local_id)
-			{
-				// We found it.
-				return TRUE;
-			}
-		}
-
-		// Done with all objects in this node, go to the next.
-		nodep = nodep->mNextNodep;
-	} while (nodep);
-
-	// Didn't find anything
-	return FALSE;
-}
-
-
-template <class DATA_TYPE, int SIZE>
-inline DATA_TYPE &LLLocalIDHashMap<DATA_TYPE, SIZE>::set(const U32 local_id, const DATA_TYPE data)
-{
-	// Set is just like a normal find, except that if we find a match
-	// we replace it with the input value.
-	// If we don't find a match, we append to the end of the list.
-
-	LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[local_id & 0xff];
-
-	while (1)
-	{
-		const S32 count = nodep->mCount;
-
-		S32 i;
-		for (i = 0; i < count; i++)
-		{
-			if (nodep->mKey[i] == local_id)
-			{
-				// We found a match for this key, replace the data with
-				// the incoming data.
-				nodep->mData[i] = data;
-				return nodep->mData[i];
-			}
-		}
-		if (!nodep->mNextNodep)
-		{
-			// We've iterated through all of the keys without finding a match
-			if (i < SIZE)
-			{
-				// There's still some space on this node, append
-				// the key and data to it.
-				nodep->mKey[i] = local_id;
-				nodep->mData[i] = data;
-				nodep->mCount++;
-
-				return nodep->mData[i];
-			}
-			else
-			{
-				// This node is full, append a new node to the end.
-				nodep->mNextNodep = new LLLocalIDHashNode<DATA_TYPE, SIZE>;
-				nodep->mNextNodep->mKey[0] = local_id;
-				nodep->mNextNodep->mData[0] = data;
-				nodep->mNextNodep->mCount = 1;
-
-				return nodep->mNextNodep->mData[0];
-			}
-		}
-
-		// No match on this node, go to the next
-		nodep = nodep->mNextNodep;
-	}
-}
-
-
-template <class DATA_TYPE, int SIZE>
-inline BOOL LLLocalIDHashMap<DATA_TYPE, SIZE>::remove(const U32 local_id)
-{
-	// Remove is the trickiest operation.
-	// What we want to do is swap the last element of the last
-	// node if we find the one that we want to remove, but we have
-	// to deal with deleting the node from the tail if it's empty, but
-	// NOT if it's the only node left.
-
-	const S32 node_index = local_id & 0xff;
-
-	LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[node_index];
-
-	// A modification of the standard search algorithm.
-	do // First node guaranteed to be there
-	{
-		const S32 count = nodep->mCount;
-
-		S32 i;
-		for (i = 0; i < count; i++)
-		{
-			if (nodep->mKey[i] == local_id)
-			{
-				// If we're removing the item currently pointed to by one
-				// or more iterators, we can just swap in the last item
-				// and back the iterator(s) up by one.
-				// Otherwise, we need to do a slow and safe shift of all
-				// items back to one position to fill the hole and fix up 
-				// all iterators we find.
-				BOOL need_shift = FALSE;
-				S32 cur_iter;
-				if (mIterCount)
-				{
-					for (cur_iter = 0; cur_iter < MAX_ITERS; cur_iter++)
-					{
-						if (mIters[cur_iter])
-						{
-							// We only care if the hash map node is on the one
-							// that we're working on.  If it's before, we've already
-							// traversed it, if it's after, changing the order doesn't
-							// matter.
-							if (mIters[cur_iter]->mCurHashMapNodeNum == node_index)
-							{
-								if ((mIters[cur_iter]->mCurHashNodep == nodep)
-									&& (mIters[cur_iter]->mCurHashNodeKey == i))
-								{
-									// it's on the one we're deleting, we'll
-									// fix the iterator quickly below.
-								}
-								else
-								{
-									// We're trying to remove an item on this
-									// iterator's chain that this
-									// iterator doesn't point to!  We need to do
-									// the slow remove-and-shift-down case.
-									need_shift = TRUE;
-								}
-							}
-						}
-					}
-				}
-
-				// Removing an item that isn't pointed to by all iterators
-				if (need_shift)
-				{
-					return removeWithShift(local_id);
-				}
-
-				// Fix the iterators that point to this node/i pair, the
-				// one we're deleting
-				for (cur_iter = 0; cur_iter < MAX_ITERS; cur_iter++)
-				{
-					if (mIters[cur_iter])
-					{
-						// We only care if the hash map node is on the one
-						// that we're working on.  If it's before, we've already
-						// traversed it, if it's after, changing the order doesn't
-						// matter.
-						if (mIters[cur_iter]->mCurHashMapNodeNum == node_index)
-						{
-							if ((mIters[cur_iter]->mCurHashNodep == nodep)
-								&& (mIters[cur_iter]->mCurHashNodeKey == i))
-							{
-								// We can handle the case where we're deleting 
-								// the element we're on trivially (sort of).
-								if (nodep->mCount > 1)
-								{
-									// If we're not going to delete this node,
-									// it's OK.
-									mIters[cur_iter]->mCurHashNodeKey--;
-								}
-								else
-								{
-									// We're going to delete this node, because this
-									// is the last element on it.
-									
-									// Find the next node, and then back up one.
-									mIters[cur_iter]->next();
-									mIters[cur_iter]->mCurHashNodeKey--;
-								}
-							}
-						}
-					}
-				}
-
-				// We found the node that we want to remove.
-				// Find the last (and next-to-last) node, and the index of the last
-				// element.  We could conceviably start from the node we're on,
-				// but that makes it more complicated, this is easier.
-
-				LLLocalIDHashNode<DATA_TYPE, SIZE> *prevp = &mNodes[node_index];
-				LLLocalIDHashNode<DATA_TYPE, SIZE> *lastp = prevp;
-
-				// Find the last and next-to-last
-				while (lastp->mNextNodep)
-				{
-					prevp = lastp;
-					lastp = lastp->mNextNodep;
-				}
-
-				// First, swap in the last to the current location.
-				nodep->mKey[i] = lastp->mKey[lastp->mCount - 1];
-				nodep->mData[i] = lastp->mData[lastp->mCount - 1];
-
-				// Now, we delete the entry
-				lastp->mCount--;
-				lastp->mData[lastp->mCount] = mNull;
-
-				if (!lastp->mCount)
-				{
-					// We deleted the last element!
-					if (lastp != &mNodes[local_id & 0xff])
-					{
-						// Only blitz the node if it's not the head
-						// Set the previous node to point to NULL, then
-						// blitz the empty last node
-						prevp->mNextNodep = NULL;
-						delete lastp;
-					}
-				}
-
-				return TRUE;
-			}
-		}
-
-		// Iterate to the next node, we've scanned all the entries in this one.
-		nodep = nodep->mNextNodep;
-	} while (nodep);
-
-	return FALSE;
-}
-
-template <class DATA_TYPE, int SIZE>
-BOOL LLLocalIDHashMap<DATA_TYPE, SIZE>::removeWithShift(const U32 local_id)
-{
-	const S32 node_index = local_id & 0xFF;
-	LLLocalIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[node_index];
-	LLLocalIDHashNode<DATA_TYPE, SIZE>* prevp = NULL;
-	BOOL found = FALSE;
-
-	do // First node guaranteed to be there
-	{
-		const S32 count = nodep->mCount;
-		S32 i;
-		for (i = 0; i < count; i++)
-		{
-			if (nodep->mKey[i] == local_id)
-			{
-				// Found the item.  Start shifting items from later
-				// in the list over this item.
-				found = TRUE;
-			}
-
-			if (found)
-			{
-				// If there is an iterator on this node, we need to 
-				// back it up.
-				S32 cur_iter;
-				for (cur_iter = 0; cur_iter <MAX_ITERS; cur_iter++)
-				{
-					LLLocalIDHashMapIter<DATA_TYPE, SIZE>* iter;
-					iter = mIters[cur_iter];
-					// If an iterator is on this node,i pair, then back it up.
-					if (iter
-						&& iter->mCurHashMapNodeNum == node_index
-						&& iter->mCurHashNodep == nodep
-						&& iter->mCurHashNodeKey == i)
-					{
-						if (i > 0)
-						{
-							// Don't need to move iterator nodep, since 
-							// we're in the same node.
-							iter->mCurHashNodeKey--;
-						}
-						else if (prevp)
-						{
-							// need to go the previous node, last item
-							iter->mCurHashNodep = prevp;
-							iter->mCurHashNodeKey = prevp->mCount - 1;
-						}
-						else
-						{
-							// we're on the first item in the list, but
-							// need to go back anyhow.
-
-							// BUG: If this deletion empties the list, 
-							// iter->done() will be wrong until
-							// iter->next() is called.
-							iter->mCurHashNodeKey = -1;
-						}
-					}
-				}
-
-				// Copy data from the next position into this position.
-				if (i < count-1)
-				{
-					// we're not on the last item in the node,
-					// so we can copy within the node
-					nodep->mKey[i] = nodep->mKey[i+1];
-					nodep->mData[i] = nodep->mData[i+1];
-				}
-				else if (nodep->mNextNodep)
-				{
-					// we're on the last item in the node,
-					// but there's a next node we can copy from
-					nodep->mKey[i] = nodep->mNextNodep->mKey[0];
-					nodep->mData[i] = nodep->mNextNodep->mData[0];
-				}
-				else
-				{
-					// We're on the last position in the list.
-					// No one to copy from.  Replace with nothing.
-					nodep->mKey[i] = 0;
-					nodep->mData[i] = mNull;
-				}
-			}
-		}
-
-		// Last node in chain, so delete the last node
-		if (found
-			&& !nodep->mNextNodep)
-		{
-			// delete the last item off the last node
-			nodep->mCount--;
-
-			if (nodep->mCount == 0)
-			{
-				// We deleted the last element!
-				if (nodep != &mNodes[node_index])
-				{
-					// Always have a prevp if we're not the head.
-					llassert(prevp);
-
-					// Only blitz the node if it's not the head
-					// Set the previous node to point to NULL, then
-					// blitz the empty last node
-					prevp->mNextNodep = NULL;
-					delete nodep;
-					nodep = NULL;
-				}
-			}
-
-			// Deleted last item in chain, so we're done.
-			return found;
-		}
-
-		prevp = nodep;
-		nodep = nodep->mNextNodep;
-	} while (nodep);
-
-	return found;
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLLocalIDHashMap<DATA_TYPE, SIZE>::removeIter(LLLocalIDHashMapIter<DATA_TYPE, SIZE> *iter)
-{
-	S32 i;
-	for (i = 0; i < MAX_ITERS; i++)
-	{
-		if (mIters[i] == iter)
-		{
-			mIters[i] = NULL;
-			mIterCount--;
-			return;
-		}
-	}
-	llerrs << "Iterator " << iter << " not found for removal in hash map!" << llendl;
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLLocalIDHashMap<DATA_TYPE, SIZE>::addIter(LLLocalIDHashMapIter<DATA_TYPE, SIZE> *iter)
-{
-	S32 i;
-	for (i = 0; i < MAX_ITERS; i++)
-	{
-		if (mIters[i] == NULL)
-		{
-			mIters[i] = iter;
-			mIterCount++;
-			return;
-		}
-	}
-	llerrs << "More than " << MAX_ITERS << " iterating over a map simultaneously!" << llendl;
-}
-
-
-
-//
-// LLLocalIDHashMapIter Implementation
-//
-template <class DATA_TYPE, int SIZE>
-LLLocalIDHashMapIter<DATA_TYPE, SIZE>::LLLocalIDHashMapIter(LLLocalIDHashMap<DATA_TYPE, SIZE> *hash_mapp)
-{
-	mHashMapp = NULL;
-	setMap(hash_mapp);
-}
-
-template <class DATA_TYPE, int SIZE>
-LLLocalIDHashMapIter<DATA_TYPE, SIZE>::~LLLocalIDHashMapIter()
-{
-	if (mHashMapp)
-	{
-		mHashMapp->removeIter(this);
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLLocalIDHashMapIter<DATA_TYPE, SIZE>::setMap(LLLocalIDHashMap<DATA_TYPE, SIZE> *hash_mapp)
-{
-	if (mHashMapp)
-	{
-		mHashMapp->removeIter(this);
-	}
-	mHashMapp = hash_mapp;
-	if (mHashMapp)
-	{
-		mHashMapp->addIter(this);
-	}
-
-	mCurHashNodep = NULL;
-	mCurHashMapNodeNum = -1;
-	mCurHashNodeKey = 0;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline void LLLocalIDHashMapIter<DATA_TYPE, SIZE>::first()
-{
-	// Iterate through until we find the first non-empty node;
-	S32 i;
-	for (i = 0; i < 256; i++)
-	{
-		if (mHashMapp->mNodes[i].mCount)
-		{
-
-			mCurHashNodep = &mHashMapp->mNodes[i];
-			mCurHashMapNodeNum = i;
-			mCurHashNodeKey = 0;
-			//return mCurHashNodep->mData[0];
-			return;
-		}
-	}
-
-	// Completely empty!
-	mCurHashNodep = NULL;
-	//return mNull;
-	return;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline BOOL LLLocalIDHashMapIter<DATA_TYPE, SIZE>::done() const
-{
-	return mCurHashNodep ? FALSE : TRUE;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline S32 LLLocalIDHashMapIter<DATA_TYPE, SIZE>::currentBin() const
-{
-	if (  (mCurHashMapNodeNum > 255)
-		||(mCurHashMapNodeNum < 0))
-	{
-		return 0;
-	}
-	else
-	{
-		return mCurHashMapNodeNum;
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-inline void LLLocalIDHashMapIter<DATA_TYPE, SIZE>::setBin(S32 bin)
-{
-	// Iterate through until we find the first non-empty node;
-	S32 i;
-	bin = llclamp(bin, 0, 255);
-	for (i = bin; i < 256; i++)
-	{
-		if (mHashMapp->mNodes[i].mCount)
-		{
-
-			mCurHashNodep = &mHashMapp->mNodes[i];
-			mCurHashMapNodeNum = i;
-			mCurHashNodeKey = 0;
-			return;
-		}
-	}
-	for (i = 0; i < bin; i++)
-	{
-		if (mHashMapp->mNodes[i].mCount)
-		{
-
-			mCurHashNodep = &mHashMapp->mNodes[i];
-			mCurHashMapNodeNum = i;
-			mCurHashNodeKey = 0;
-			return;
-		}
-	}
-	// Completely empty!
-	mCurHashNodep = NULL;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline DATA_TYPE &LLLocalIDHashMapIter<DATA_TYPE, SIZE>::current()
-{
-	if (!mCurHashNodep)
-	{
-		return mNull;
-	}
-	return mCurHashNodep->mData[mCurHashNodeKey];
-}
-
-template <class DATA_TYPE, int SIZE>
-inline void LLLocalIDHashMapIter<DATA_TYPE, SIZE>::next()
-{
-	// No current entry, this iterator is done
-	if (!mCurHashNodep)
-	{
-		//return mNull;
-		return;
-	}
-
-	// Go to the next element
-	mCurHashNodeKey++;
-	if (mCurHashNodeKey < mCurHashNodep->mCount)
-	{
-		// We're not done with this node, return the current element
-		//return mCurHashNodep->mData[mCurHashNodeKey];
-		return;
-	}
-
-	// Done with this node, move to the next
-	mCurHashNodep = mCurHashNodep->mNextNodep;
-	if (mCurHashNodep)
-	{
-		// Return the first element
-		mCurHashNodeKey = 0;
-		//return mCurHashNodep->mData[0];
-		return;
-	}
-
-	// Find the next non-empty node (keyed on the first byte)
-	mCurHashMapNodeNum++;
-
-	S32 i;
-	for (i = mCurHashMapNodeNum; i < 256; i++)
-	{
-		if (mHashMapp->mNodes[i].mCount)
-		{
-			// We found one that wasn't empty
-			mCurHashNodep = &mHashMapp->mNodes[i];
-			mCurHashMapNodeNum = i;
-			mCurHashNodeKey = 0;
-			//return mCurHashNodep->mData[0];
-			return;
-		}
-	}
-
-	// OK, we're done, nothing else to iterate
-	mCurHashNodep = NULL;
-	mHashMapp->mIterCount--; // Decrement since we're safe to do removes now
-	//return mNull;
-	return;
-}
-
-#endif // LL_LLLOCALIDHASHMAP_H
diff --git a/indra/llcommon/llmd5.cpp b/indra/llcommon/llmd5.cpp
index 1409c55d1c..ed80af36d8 100755
--- a/indra/llcommon/llmd5.cpp
+++ b/indra/llcommon/llmd5.cpp
@@ -76,7 +76,6 @@ documentation and/or software.
 
 #include "llmd5.h"
 
-#include <cassert>
 #include <iostream>		// cerr
 
 // how many bytes to grab at a time when checking files
diff --git a/indra/llcommon/llmemory.cpp b/indra/llcommon/llmemory.cpp
index 70ad10ad55..c6b02df939 100755
--- a/indra/llcommon/llmemory.cpp
+++ b/indra/llcommon/llmemory.cpp
@@ -32,7 +32,6 @@
 //#endif
 
 #if defined(LL_WINDOWS)
-//# include <windows.h>
 # include <psapi.h>
 #elif defined(LL_DARWIN)
 # include <sys/types.h>
diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h
index e725bdd9fa..95500753e4 100755
--- a/indra/llcommon/llmemory.h
+++ b/indra/llcommon/llmemory.h
@@ -27,6 +27,9 @@
 #define LLMEMORY_H
 
 #include "linden_common.h"
+#if !LL_WINDOWS
+#include <stdint.h>
+#endif
 
 class LLMutex ;
 
@@ -36,6 +39,20 @@ class LLMutex ;
 #define LL_CHECK_MEMORY
 #endif
 
+#if LL_WINDOWS
+#define LL_ALIGN_OF __alignof
+#else
+#define LL_ALIGN_OF __align_of__
+#endif
+
+#if LL_WINDOWS
+#define LL_DEFAULT_HEAP_ALIGN 8
+#elif LL_DARWIN
+#define LL_DEFAULT_HEAP_ALIGN 16
+#elif LL_LINUX
+#define LL_DEFAULT_HEAP_ALIGN 8
+#endif
+
 inline void* ll_aligned_malloc( size_t size, int align )
 {
 	void* mem = malloc( size + (align - 1) + sizeof(void*) );
diff --git a/indra/llcommon/llmetricperformancetester.cpp b/indra/llcommon/llmetricperformancetester.cpp
index 731e58bd20..fd89cb818a 100755
--- a/indra/llcommon/llmetricperformancetester.cpp
+++ b/indra/llcommon/llmetricperformancetester.cpp
@@ -29,9 +29,9 @@
 #include "indra_constants.h"
 #include "llerror.h"
 #include "llsdserialize.h"
-#include "llstat.h"
 #include "lltreeiterators.h"
 #include "llmetricperformancetester.h"
+#include "llfasttimer.h"
 
 //----------------------------------------------------------------------------------------------
 // LLMetricPerformanceTesterBasic : static methods and testers management
@@ -91,7 +91,7 @@ LLMetricPerformanceTesterBasic* LLMetricPerformanceTesterBasic::getTester(std::s
 // Return TRUE if this metric is requested or if the general default "catch all" metric is requested
 BOOL LLMetricPerformanceTesterBasic::isMetricLogRequested(std::string name)
 {
-	return (LLFastTimer::sMetricLog && ((LLFastTimer::sLogName == name) || (LLFastTimer::sLogName == DEFAULT_METRIC_NAME)));
+	return (LLTrace::TimeBlock::sMetricLog && ((LLTrace::TimeBlock::sLogName == name) || (LLTrace::TimeBlock::sLogName == DEFAULT_METRIC_NAME)));
 }
 
 /*static*/ 
@@ -194,8 +194,7 @@ void LLMetricPerformanceTesterBasic::preOutputTestResults(LLSD* sd)
 
 void LLMetricPerformanceTesterBasic::postOutputTestResults(LLSD* sd)
 {
-	LLMutexLock lock(LLFastTimer::sLogLock);
-	LLFastTimer::sLogQueue.push((*sd));
+	LLTrace::TimeBlock::pushLog(*sd);
 }
 
 void LLMetricPerformanceTesterBasic::outputTestResults() 
diff --git a/indra/llcommon/llmortician.h b/indra/llcommon/llmortician.h
index 319955ef93..9517e2db5e 100755
--- a/indra/llcommon/llmortician.h
+++ b/indra/llcommon/llmortician.h
@@ -28,6 +28,7 @@
 #define LLMORTICIAN_H
 
 #include "stdtypes.h"
+#include <list>
 
 class LL_COMMON_API LLMortician 
 {
diff --git a/indra/llcommon/llmutex.cpp b/indra/llcommon/llmutex.cpp
new file mode 100644
index 0000000000..ad0287c6d5
--- /dev/null
+++ b/indra/llcommon/llmutex.cpp
@@ -0,0 +1,179 @@
+/** 
+ * @file llmutex.cpp
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llapr.h"
+
+#include "apr_portable.h"
+
+#include "llmutex.h"
+#include "llthread.h"
+
+//============================================================================
+
+LLMutex::LLMutex(apr_pool_t *poolp) :
+	mAPRMutexp(NULL), mCount(0), mLockingThread(NO_THREAD)
+{
+	//if (poolp)
+	//{
+	//	mIsLocalPool = FALSE;
+	//	mAPRPoolp = poolp;
+	//}
+	//else
+	{
+		mIsLocalPool = TRUE;
+		apr_pool_create(&mAPRPoolp, NULL); // Create a subpool for this thread
+	}
+	apr_thread_mutex_create(&mAPRMutexp, APR_THREAD_MUTEX_UNNESTED, mAPRPoolp);
+}
+
+
+LLMutex::~LLMutex()
+{
+#if MUTEX_DEBUG
+	//bad assertion, the subclass LLSignal might be "locked", and that's OK
+	//llassert_always(!isLocked()); // better not be locked!
+#endif
+	if (ll_apr_is_initialized())
+	{
+		apr_thread_mutex_destroy(mAPRMutexp);
+		if (mIsLocalPool)
+		{
+			apr_pool_destroy(mAPRPoolp);
+		}
+	}
+	mAPRMutexp = NULL;
+}
+
+
+void LLMutex::lock()
+{
+	if(isSelfLocked())
+	{ //redundant lock
+		mCount++;
+		return;
+	}
+	
+	apr_thread_mutex_lock(mAPRMutexp);
+	
+#if MUTEX_DEBUG
+	// Have to have the lock before we can access the debug info
+	U32 id = LLThread::currentID();
+	if (mIsLocked[id] != FALSE)
+		llerrs << "Already locked in Thread: " << id << llendl;
+	mIsLocked[id] = TRUE;
+#endif
+
+	mLockingThread = LLThread::currentID();
+}
+
+void LLMutex::unlock()
+{
+	if (mCount > 0)
+	{ //not the root unlock
+		mCount--;
+		return;
+	}
+	
+#if MUTEX_DEBUG
+	// Access the debug info while we have the lock
+	U32 id = LLThread::currentID();
+	if (mIsLocked[id] != TRUE)
+		llerrs << "Not locked in Thread: " << id << llendl;	
+	mIsLocked[id] = FALSE;
+#endif
+
+	mLockingThread = NO_THREAD;
+	apr_thread_mutex_unlock(mAPRMutexp);
+}
+
+bool LLMutex::isLocked()
+{
+	apr_status_t status = apr_thread_mutex_trylock(mAPRMutexp);
+	if (APR_STATUS_IS_EBUSY(status))
+	{
+		return true;
+	}
+	else
+	{
+		apr_thread_mutex_unlock(mAPRMutexp);
+		return false;
+	}
+}
+
+bool LLMutex::isSelfLocked()
+{
+	return mLockingThread == LLThread::currentID();
+}
+
+U32 LLMutex::lockingThread() const
+{
+	return mLockingThread;
+}
+
+//============================================================================
+
+LLCondition::LLCondition(apr_pool_t *poolp) :
+	LLMutex(poolp)
+{
+	// base class (LLMutex) has already ensured that mAPRPoolp is set up.
+
+	apr_thread_cond_create(&mAPRCondp, mAPRPoolp);
+}
+
+
+LLCondition::~LLCondition()
+{
+	apr_thread_cond_destroy(mAPRCondp);
+	mAPRCondp = NULL;
+}
+
+
+void LLCondition::wait()
+{
+	if (!isLocked())
+	{ //mAPRMutexp MUST be locked before calling apr_thread_cond_wait
+		apr_thread_mutex_lock(mAPRMutexp);
+#if MUTEX_DEBUG
+		// avoid asserts on destruction in non-release builds
+		U32 id = LLThread::currentID();
+		mIsLocked[id] = TRUE;
+#endif
+	}
+	apr_thread_cond_wait(mAPRCondp, mAPRMutexp);
+}
+
+void LLCondition::signal()
+{
+	apr_thread_cond_signal(mAPRCondp);
+}
+
+void LLCondition::broadcast()
+{
+	apr_thread_cond_broadcast(mAPRCondp);
+}
+
+
+//============================================================================
diff --git a/indra/llcommon/llmutex.h b/indra/llcommon/llmutex.h
new file mode 100644
index 0000000000..cbde4c47a9
--- /dev/null
+++ b/indra/llcommon/llmutex.h
@@ -0,0 +1,101 @@
+/** 
+ * @file llmutex.h
+ * @brief Base classes for mutex and condition handling.
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLMUTEX_H
+#define LL_LLMUTEX_H
+
+#include "llapr.h"
+#include "apr_thread_cond.h"
+
+//============================================================================
+
+#define MUTEX_DEBUG (LL_DEBUG || LL_RELEASE_WITH_DEBUG_INFO)
+
+class LL_COMMON_API LLMutex
+{
+public:
+	typedef enum
+	{
+		NO_THREAD = 0xFFFFFFFF
+	} e_locking_thread;
+
+	LLMutex(apr_pool_t *apr_poolp = NULL); // NULL pool constructs a new pool for the mutex
+	virtual ~LLMutex();
+	
+	void lock();		// blocks
+	void unlock();
+	bool isLocked(); 	// non-blocking, but does do a lock/unlock so not free
+	bool isSelfLocked(); //return true if locked in a same thread
+	U32 lockingThread() const; //get ID of locking thread
+	
+protected:
+	apr_thread_mutex_t *mAPRMutexp;
+	mutable U32			mCount;
+	mutable U32			mLockingThread;
+	
+	apr_pool_t			*mAPRPoolp;
+	BOOL				mIsLocalPool;
+	
+#if MUTEX_DEBUG
+	std::map<U32, BOOL> mIsLocked;
+#endif
+};
+
+// Actually a condition/mutex pair (since each condition needs to be associated with a mutex).
+class LL_COMMON_API LLCondition : public LLMutex
+{
+public:
+	LLCondition(apr_pool_t *apr_poolp); // Defaults to global pool, could use the thread pool as well.
+	~LLCondition();
+	
+	void wait();		// blocks
+	void signal();
+	void broadcast();
+	
+protected:
+	apr_thread_cond_t *mAPRCondp;
+};
+
+class LLMutexLock
+{
+public:
+	LLMutexLock(LLMutex* mutex)
+	{
+		mMutex = mutex;
+		
+		if(mMutex)
+			mMutex->lock();
+	}
+	~LLMutexLock()
+	{
+		if(mMutex)
+			mMutex->unlock();
+	}
+private:
+	LLMutex* mMutex;
+};
+
+#endif // LL_LLTHREAD_H
diff --git a/indra/llcommon/llpointer.h b/indra/llcommon/llpointer.h
index 88c09c8dca..e640ffd595 100755
--- a/indra/llcommon/llpointer.h
+++ b/indra/llcommon/llpointer.h
@@ -97,24 +97,13 @@ public:
 
 	LLPointer<Type>& operator =(Type* ptr)                   
 	{ 
-		if( mPointer != ptr )
-		{
-			unref(); 
-			mPointer = ptr; 
-			ref();
-		}
-
+		assign(ptr);
 		return *this; 
 	}
 
 	LLPointer<Type>& operator =(const LLPointer<Type>& ptr)  
 	{ 
-		if( mPointer != ptr.mPointer )
-		{
-			unref(); 
-			mPointer = ptr.mPointer;
-			ref();
-		}
+		assign(ptr);
 		return *this; 
 	}
 
@@ -122,12 +111,7 @@ public:
 	template<typename Subclass>
 	LLPointer<Type>& operator =(const LLPointer<Subclass>& ptr)  
 	{ 
-		if( mPointer != ptr.get() )
-		{
-			unref(); 
-			mPointer = ptr.get();
-			ref();
-		}
+		assign(ptr.get());
 		return *this; 
 	}
 	
@@ -144,6 +128,16 @@ protected:
 	void ref();                             
 	void unref();
 #else
+
+	void assign(const LLPointer<Type>& ptr)
+	{
+		if( mPointer != ptr.mPointer )
+		{
+			unref(); 
+			mPointer = ptr.mPointer;
+			ref();
+		}
+	}
 	void ref()                             
 	{ 
 		if (mPointer)
@@ -156,9 +150,9 @@ protected:
 	{
 		if (mPointer)
 		{
-			Type *tempp = mPointer;
+			Type *temp = mPointer;
 			mPointer = NULL;
-			tempp->unref();
+			temp->unref();
 			if (mPointer != NULL)
 			{
 				llwarns << "Unreference did assignment to non-NULL because of destructor" << llendl;
@@ -171,4 +165,40 @@ protected:
 	Type*	mPointer;
 };
 
+template<typename Type>
+class LLCopyOnWritePointer : public LLPointer<Type>
+{
+public:
+	typedef LLCopyOnWritePointer<Type> self_t;
+    typedef LLPointer<Type> pointer_t;
+    
+	LLCopyOnWritePointer() 
+	{}
+
+	LLCopyOnWritePointer(Type* ptr) 
+	:	LLPointer<Type>(ptr)
+	{}
+
+	LLCopyOnWritePointer(LLPointer<Type>& ptr)
+	:	LLPointer<Type>(ptr)
+	{}
+
+	Type* write()
+	{
+		makeUnique();
+		return pointer_t::mPointer;
+	}
+
+	void makeUnique()
+	{
+		if (pointer_t::notNull() && pointer_t::mPointer->getNumRefs() > 1)
+		{
+			*(pointer_t*)(this) = new Type(*pointer_t::mPointer);
+		}
+	}
+
+	const Type*	operator->() const	{ return pointer_t::mPointer; }
+	const Type&	operator*() const	{ return *pointer_t::mPointer; }
+};
+
 #endif
diff --git a/indra/llcommon/lllazy.cpp b/indra/llcommon/llpredicate.cpp
index 29fa040387..1278948e24 100755..100644
--- a/indra/llcommon/lllazy.cpp
+++ b/indra/llcommon/llpredicate.cpp
@@ -1,10 +1,8 @@
-/**
- * @file   lllazy.cpp
- * @author Nat Goodspeed
- * @date   2009-01-28
- * @brief  Implementation for lllazy.
- * 
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
+/** 
+ * @file llpredicate.cpp
+ * @brief abstraction for filtering objects by predicates, with arbitrary boolean expressions
+ *
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
  * 
@@ -25,16 +23,19 @@
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
-
-// Precompiled header
 #include "linden_common.h"
-// associated header
-#include "lllazy.h"
-// STL headers
-// std headers
-// external library headers
-// other Linden headers
 
-// lllazy.h is presently header-only. This file exists only because our CMake
-// test macro ADD_BUILD_TEST requires it.
-int dummy = 0;
+#include "llpredicate.h"
+
+namespace LLPredicate
+{
+	const U32 cPredicateFlagsFromEnum[5] = 
+	{
+		0xAAAAaaaa, // 10101010101010101010101010101010
+		0xCCCCcccc, // 11001100110011001100110011001100
+		0xF0F0F0F0, // 11110000111100001111000011110000
+		0xFF00FF00, // 11111111000000001111111100000000
+		0xFFFF0000  // 11111111111111110000000000000000 
+	};
+}
+
diff --git a/indra/llcommon/llpredicate.h b/indra/llcommon/llpredicate.h
new file mode 100644
index 0000000000..a0e970a799
--- /dev/null
+++ b/indra/llcommon/llpredicate.h
@@ -0,0 +1,210 @@
+/** 
+ * @file llpredicate.h
+ * @brief abstraction for filtering objects by predicates, with arbitrary boolean expressions
+ *
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLPREDICATE_H
+#define LL_LLPREDICATE_H
+
+#include "llerror.h"
+
+namespace LLPredicate
+{
+	template<typename ENUM> class Rule;
+
+	extern const U32 cPredicateFlagsFromEnum[5];
+
+	template<typename ENUM>
+	class Value
+	{
+	public:
+		typedef U32 predicate_flag_t;
+		static const S32 cMaxEnum = 5;
+
+		Value(ENUM e, bool predicate_value = true)
+		:	mPredicateFlags(predicate_value ? cPredicateFlagsFromEnum[e] : ~cPredicateFlagsFromEnum[e])
+		{
+			llassert(0 <= e && e < cMaxEnum);
+		}
+
+		Value()
+		:	mPredicateFlags(0xFFFFffff)
+		{}
+
+		Value operator!() const
+		{
+			Value new_value;
+			new_value.mPredicateFlags = ~mPredicateFlags;
+			return new_value;
+		}
+
+		Value operator &&(const Value other) const
+		{
+			Value new_value;
+			new_value.mPredicateFlags = mPredicateFlags & other.mPredicateFlags;
+			return new_value;
+		}
+
+		Value operator ||(const Value other) const
+		{
+			Value new_value;
+			new_value.mPredicateFlags = mPredicateFlags | other.mPredicateFlags;
+			return new_value;
+		}
+
+		void set(ENUM e, bool value = true)
+		{
+			llassert(0 <= e && e < cMaxEnum);
+			predicate_flag_t flags_to_modify;
+			predicate_flag_t mask = cPredicateFlagsFromEnum[e];
+			if (value)
+			{	// add predicate "e" to flags that don't contain it already
+				flags_to_modify = (mPredicateFlags & ~mask);
+				// clear flags not containing e
+				mPredicateFlags &= mask;
+				// add back flags shifted to contain e
+				mPredicateFlags |= flags_to_modify << (0x1 << e);
+			}
+			else
+			{	// remove predicate "e" from flags that contain it
+				flags_to_modify = (mPredicateFlags & mask);
+				// clear flags containing e
+				mPredicateFlags &= ~mask;
+				// add back flags shifted to not contain e
+				mPredicateFlags |= flags_to_modify >> (0x1 << e);
+			}
+		}
+
+		void forget(ENUM e)
+		{
+			set(e, true);
+			U32 flags_with_predicate = mPredicateFlags;
+			set(e, false);
+			// ambiguous value is result of adding and removing predicate at the same time!
+			mPredicateFlags |= flags_with_predicate;
+		}
+
+		bool allSet() const
+		{
+			return mPredicateFlags == ~0;
+		}
+
+		bool noneSet() const
+		{
+			return mPredicateFlags == 0;
+		}
+
+		bool someSet() const
+		{
+			return mPredicateFlags != 0;
+		}
+
+	private:
+		predicate_flag_t mPredicateFlags;
+	};
+
+	template<typename ENUM>
+	class Rule
+	{
+	public:
+		Rule(ENUM value)
+		:	mRule(value)
+		{}
+
+		Rule(const Value<ENUM> other)
+		:	mRule(other)
+		{}
+
+		Rule()
+		{}
+
+		void require(ENUM e)
+		{
+			mRule.set(e, require);
+		}
+
+		void allow(ENUM e)
+		{
+			mRule.forget(e);
+		}
+
+		bool check(const Value<ENUM> value) const
+		{
+			return (mRule && value).someSet();
+		}
+
+		bool requires(const Value<ENUM> value) const
+		{
+			return (mRule && value).someSet() && (!mRule && value).noneSet();
+		}
+
+		bool isAmbivalent(const Value<ENUM> value) const
+		{
+			return (mRule && value).someSet() && (!mRule && value).someSet();
+		}
+
+		bool acceptsAll() const
+		{
+			return mRule.allSet();
+		}
+
+		bool acceptsNone() const
+		{
+			return mRule.noneSet();
+		}
+
+		Rule operator!() const
+		{
+			Rule new_rule;
+			new_rule.mRule = !mRule;
+			return new_rule;
+		}
+
+		Rule operator &&(const Rule other) const
+		{
+			Rule new_rule;
+			new_rule.mRule = mRule && other.mRule;
+			return new_rule;
+		}
+
+		Rule operator ||(const Rule other) const
+		{
+			Rule new_rule;
+			new_rule.mRule = mRule || other.mRule;
+			return new_rule;
+		}
+
+	private:
+		Value<ENUM> mRule;
+	};
+}
+
+template<typename ENUM>
+LLPredicate::Value<ENUM> ll_make_predicate(ENUM e, bool predicate_value = true)
+{
+	 return LLPredicate::Value<ENUM>(e, predicate_value);
+}
+
+
+#endif // LL_LLPREDICATE_H
diff --git a/indra/llcommon/llprocess.h b/indra/llcommon/llprocess.h
index d711ce2f74..43ccadc412 100755
--- a/indra/llcommon/llprocess.h
+++ b/indra/llcommon/llprocess.h
@@ -29,6 +29,7 @@
 
 #include "llinitparam.h"
 #include "llsdparam.h"
+#include "llwin32headerslean.h"
 #include "apr_thread_proc.h"
 #include <boost/shared_ptr.hpp>
 #include <boost/ptr_container/ptr_vector.hpp>
@@ -38,8 +39,7 @@
 #include <stdexcept>
 
 #if LL_WINDOWS
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>                // HANDLE (eye roll)
+#include "llwin32headerslean.h"	// for HANDLE
 #elif LL_LINUX
 #if defined(Status)
 #undef Status
diff --git a/indra/llcommon/llprocessor.cpp b/indra/llcommon/llprocessor.cpp
index fd8f603d21..5ddfa6fcef 100755
--- a/indra/llcommon/llprocessor.cpp
+++ b/indra/llcommon/llprocessor.cpp
@@ -32,9 +32,7 @@
 //#include <memory>
 
 #if LL_WINDOWS
-#	define WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
+#	include "llwin32headerslean.h"
 #	define _interlockedbittestandset _renamed_interlockedbittestandset
 #	define _interlockedbittestandreset _renamed_interlockedbittestandreset
 #	include <intrin.h>
@@ -877,7 +875,7 @@ LLProcessorInfo::LLProcessorInfo() : mImpl(NULL)
 
 
 LLProcessorInfo::~LLProcessorInfo() {}
-F64 LLProcessorInfo::getCPUFrequency() const { return mImpl->getCPUFrequency(); }
+LLUnitImplicit<LLUnits::Megahertz, F64> LLProcessorInfo::getCPUFrequency() const { return mImpl->getCPUFrequency(); }
 bool LLProcessorInfo::hasSSE() const { return mImpl->hasSSE(); }
 bool LLProcessorInfo::hasSSE2() const { return mImpl->hasSSE2(); }
 bool LLProcessorInfo::hasAltivec() const { return mImpl->hasAltivec(); }
diff --git a/indra/llcommon/llprocessor.h b/indra/llcommon/llprocessor.h
index 6364d3c8bb..fbd427f484 100755
--- a/indra/llcommon/llprocessor.h
+++ b/indra/llcommon/llprocessor.h
@@ -27,6 +27,8 @@
 
 #ifndef LLPROCESSOR_H
 #define LLPROCESSOR_H
+#include "llunit.h"
+
 class LLProcessorInfoImpl;
 
 class LL_COMMON_API LLProcessorInfo
@@ -35,7 +37,7 @@ public:
 	LLProcessorInfo(); 
  	~LLProcessorInfo();
 
-	F64 getCPUFrequency() const;
+	LLUnitImplicit<LLUnits::Megahertz, F64> getCPUFrequency() const;
 	bool hasSSE() const;
 	bool hasSSE2() const;
 	bool hasAltivec() const;
diff --git a/indra/llcommon/llptrskiplist.h b/indra/llcommon/llptrskiplist.h
deleted file mode 100755
index 67c7cde352..0000000000
--- a/indra/llcommon/llptrskiplist.h
+++ /dev/null
@@ -1,724 +0,0 @@
-/** 
- * @file llptrskiplist.h
- * @brief Skip list implementation.
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLPTRSKIPLIST_H
-#define LL_LLPTRSKIPLIST_H
-
-#include "llerror.h"
-#include "llrand.h"
-//#include "vmath.h"
-#include "llrand.h"
-
-/////////////////////////////////////////////
-//
-//	LLPtrSkipList implementation - skip list for pointers to objects
-//
-
-template <class DATA_TYPE, S32 BINARY_DEPTH = 8>
-class LLPtrSkipList
-{
-public:
-	friend class LLPtrSkipNode;
-
-	// basic constructor
-	LLPtrSkipList();
-	// basic constructor including sorter
-	LLPtrSkipList(BOOL	(*insert_first)(DATA_TYPE *first, DATA_TYPE *second), 
-				  BOOL	(*equals)(DATA_TYPE *first, DATA_TYPE *second));
-	~LLPtrSkipList();
-
-	inline void setInsertFirst(BOOL (*insert_first)(const DATA_TYPE *first, const DATA_TYPE *second));
-	inline void setEquals(BOOL (*equals)(const DATA_TYPE *first, const DATA_TYPE *second));
-
-	inline BOOL addData(DATA_TYPE *data);
-
-	inline BOOL checkData(const DATA_TYPE *data);
-
-	inline S32 getLength();	// returns number of items in the list - NOT constant time!
-
-	inline BOOL removeData(const DATA_TYPE *data);
-
-	// note that b_sort is ignored
-	inline BOOL moveData(const DATA_TYPE *data, LLPtrSkipList *newlist, BOOL b_sort);
-
-	inline BOOL moveCurrentData(LLPtrSkipList *newlist, BOOL b_sort);
-
-	// resort -- use when the value we're sorting by changes
-	/* IW 12/6/02 - This doesn't work!
-	   Instead, remove the data BEFORE you change it
-	   Then re-insert it after you change it
-	BOOL resortData(DATA_TYPE *data)
-	*/
-
-	// remove all nodes from the list but do not delete data
-	inline void removeAllNodes();
-
-	inline BOOL deleteData(const DATA_TYPE *data);
-
-	// remove all nodes from the list and delete data
-	inline void deleteAllData();
-
-	// place mCurrentp on first node
-	inline void resetList();
-
-	// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	inline DATA_TYPE	*getCurrentData();
-
-	// same as getCurrentData() but a more intuitive name for the operation
-	inline DATA_TYPE	*getNextData();
-
-	// remove the Node at mCurentOperatingp
-	// leave mCurrentp and mCurentOperatingp on the next entry
-	inline void removeCurrentData();
-
-	// delete the Node at mCurentOperatingp
-	// leave mCurrentp and mCurentOperatingp on the next entry
-	inline void deleteCurrentData();
-
-	// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	inline DATA_TYPE	*getFirstData();
-
-	// TRUE if nodes are not in sorted order
-	inline BOOL corrupt();
-
-protected:
-	class LLPtrSkipNode
-	{
-	public:
-		LLPtrSkipNode()
-		:	mData(NULL)
-		{
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-		}
-
-		LLPtrSkipNode(DATA_TYPE *data)
-			: mData(data)
-		{
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-		}
-
-		~LLPtrSkipNode()
-		{
-			if (mData)
-			{
-				llerror("Attempting to call LLPtrSkipNode destructor with a non-null mDatap!", 1);
-			}
-		}
-
-		// delete associated data and NULLs out pointer
-		void deleteData()
-		{
-			delete mData;
-			mData = NULL;
-		}
-
-		// NULLs out pointer
-		void removeData()
-		{
-			mData = NULL;
-		}
-
-		DATA_TYPE					*mData;
-		LLPtrSkipNode				*mForward[BINARY_DEPTH];
-	};
-
-	static BOOL					defaultEquals(const DATA_TYPE *first, const DATA_TYPE *second)
-	{
-		return first == second;
-	}
-
-
-	LLPtrSkipNode				mHead;
-	LLPtrSkipNode				*mUpdate[BINARY_DEPTH];
-	LLPtrSkipNode				*mCurrentp;
-	LLPtrSkipNode				*mCurrentOperatingp;
-	S32							mLevel;
-	BOOL						(*mInsertFirst)(const DATA_TYPE *first, const DATA_TYPE *second);
-	BOOL						(*mEquals)(const DATA_TYPE *first, const DATA_TYPE *second);
-};
-
-
-// basic constructor
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::LLPtrSkipList()
-	: mInsertFirst(NULL), mEquals(defaultEquals)
-{
-	if (BINARY_DEPTH < 2)
-	{
-		llerrs << "Trying to create skip list with too little depth, "
-			"must be 2 or greater" << llendl;
-	}
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mUpdate[i] = NULL;
-	}
-	mLevel = 1;
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-// basic constructor including sorter
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::LLPtrSkipList(BOOL	(*insert_first)(DATA_TYPE *first, DATA_TYPE *second), 
-													  BOOL	(*equals)(DATA_TYPE *first, DATA_TYPE *second)) 
-	:mInsertFirst(insert_first), mEquals(equals)
-{
-	if (BINARY_DEPTH < 2)
-	{
-		llerrs << "Trying to create skip list with too little depth, "
-			"must be 2 or greater" << llendl;
-	}
-	mLevel = 1;
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::~LLPtrSkipList()
-{
-	removeAllNodes();
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::setInsertFirst(BOOL (*insert_first)(const DATA_TYPE *first, const DATA_TYPE *second))
-{
-	mInsertFirst = insert_first;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::setEquals(BOOL (*equals)(const DATA_TYPE *first, const DATA_TYPE *second))
-{
-	mEquals = equals;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::addData(DATA_TYPE *data)
-{
-	S32				level;
-	LLPtrSkipNode	*current = &mHead;
-	LLPtrSkipNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (ll_frand() < 0.5f)
-			break;
-	}
-
-	LLPtrSkipNode *snode = new LLPtrSkipNode(data);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	return TRUE;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::checkData(const DATA_TYPE *data)
-{
-	S32			level;
-	LLPtrSkipNode	*current = &mHead;
-	LLPtrSkipNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-	
-	if (current)
-	{
-		return mEquals(current->mData, data);
-	}
-	else
-	{
-		return FALSE;
-	}
-}
-
-// returns number of items in the list
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline S32 LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::getLength()
-{
-	U32	length = 0;
-	for (LLPtrSkipNode* temp = *(mHead.mForward); temp != NULL; temp = temp->mForward[0])
-	{
-		length++;
-	}
-	return length;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::removeData(const DATA_TYPE *data)
-{
-	S32			level;
-	LLPtrSkipNode	*current = &mHead;
-	LLPtrSkipNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (!current)
-	{
-		// empty list or beyond the end!
-		return FALSE;
-	}
-
-	// is this the one we want?
-	if (!mEquals(current->mData, data))
-	{
-		// nope!
-			return FALSE;
-	}
-	else
-	{
-		// yes it is!  change pointers as required
-		for (level = 0; level < mLevel; level++)
-		{
-			if (mUpdate[level]->mForward[level] != current)
-			{
-				// cool, we've fixed all the pointers!
-				break;
-			}
-			mUpdate[level]->mForward[level] = current->mForward[level];
-		}
-
-		// clean up cuurent
-		current->removeData();
-		delete current;
-
-		// clean up mHead
-		while (  (mLevel > 1)
-			   &&(!mHead.mForward[mLevel - 1]))
-		{
-			mLevel--;
-		}
-	}
-	return TRUE;
-}
-
-// note that b_sort is ignored
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::moveData(const DATA_TYPE *data, LLPtrSkipList *newlist, BOOL b_sort)
-{
-	BOOL removed = removeData(data);
-	BOOL added = newlist->addData(data);
-	return removed && added;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::moveCurrentData(LLPtrSkipList *newlist, BOOL b_sort)
-{
-	if (mCurrentOperatingp)
-	{
-		mCurrentp = mCurrentOperatingp->mForward[0];	
-		BOOL removed = removeData(mCurrentOperatingp);
-		BOOL added = newlist->addData(mCurrentOperatingp);
-		mCurrentOperatingp = mCurrentp;
-		return removed && added;
-	}
-	return FALSE;
-}
-
-// resort -- use when the value we're sorting by changes
-/* IW 12/6/02 - This doesn't work!
-   Instead, remove the data BEFORE you change it
-   Then re-insert it after you change it
-BOOL resortData(DATA_TYPE *data)
-{
-	removeData(data);
-	addData(data);
-}
-*/
-
-// remove all nodes from the list but do not delete data
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::removeAllNodes()
-{
-	LLPtrSkipNode *temp;
-	// reset mCurrentp
-	mCurrentp = *(mHead.mForward);
-
-	while (mCurrentp)
-	{
-		temp = mCurrentp->mForward[0];
-		mCurrentp->removeData();
-		delete mCurrentp;
-		mCurrentp = temp;
-	}
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::deleteData(const DATA_TYPE *data)
-{
-	S32			level;
-	LLPtrSkipNode	*current = &mHead;
-	LLPtrSkipNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (!current)
-	{
-		// empty list or beyond the end!
-		return FALSE;
-	}
-
-	// is this the one we want?
-	if (!mEquals(current->mData, data))
-	{
-		// nope!
-		return FALSE;
-	}
-	else
-	{
-		// do we need to fix current or currentop?
-		if (current == mCurrentp)
-		{
-			mCurrentp = current->mForward[0];
-		}
-
-		if (current == mCurrentOperatingp)
-		{
-			mCurrentOperatingp = current->mForward[0];
-		}
-
-		// yes it is!  change pointers as required
-		for (level = 0; level < mLevel; level++)
-		{
-			if (mUpdate[level]->mForward[level] != current)
-			{
-				// cool, we've fixed all the pointers!
-				break;
-			}
-			mUpdate[level]->mForward[level] = current->mForward[level];
-		}
-
-		// clean up cuurent
-		current->deleteData();
-		delete current;
-
-		// clean up mHead
-		while (  (mLevel > 1)
-			   &&(!mHead.mForward[mLevel - 1]))
-		{
-			mLevel--;
-		}
-	}
-	return TRUE;
-}
-
-// remove all nodes from the list and delete data
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::deleteAllData()
-{
-	LLPtrSkipNode *temp;
-	// reset mCurrentp
-	mCurrentp = *(mHead.mForward);
-
-	while (mCurrentp)
-	{
-		temp = mCurrentp->mForward[0];
-		mCurrentp->deleteData();
-		delete mCurrentp;
-		mCurrentp = temp;
-	}
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-// place mCurrentp on first node
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::resetList()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline DATA_TYPE *LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::getCurrentData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = *mCurrentp->mForward;
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;		// causes compile warning
-		return 0; 			// equivalent, but no warning
-	}
-}
-
-// same as getCurrentData() but a more intuitive name for the operation
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline DATA_TYPE *LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::getNextData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = *mCurrentp->mForward;
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;		// causes compile warning
-		return 0; 			// equivalent, but no warning
-	}
-}
-
-// remove the Node at mCurentOperatingp
-// leave mCurrentp and mCurentOperatingp on the next entry
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::removeCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		removeData(mCurrentOperatingp->mData);
-	}
-}
-
-// delete the Node at mCurentOperatingp
-// leave mCurrentp and mCurentOperatingp on the next entry
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline void LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::deleteCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		deleteData(mCurrentOperatingp->mData);
-	}
-}
-
-// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline DATA_TYPE *LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::getFirstData()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;		// causes compile warning
-		return 0; 			// equivalent, but no warning
-	}
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH> 
-inline BOOL LLPtrSkipList<DATA_TYPE, BINARY_DEPTH>::corrupt()
-{
-	LLPtrSkipNode *previous = mHead.mForward[0];
-
-	// Empty lists are not corrupt.
-	if (!previous) return FALSE;
-
-	LLPtrSkipNode *current = previous->mForward[0];
-	while(current)
-	{
-		if (!mInsertFirst(previous->mData, current->mData))
-		{
-			// prev shouldn't be in front of cur!
-			return TRUE;
-		}
-		current = current->mForward[0];
-	}
-	return FALSE;
-}
-
-#endif
diff --git a/indra/llcommon/llptrskipmap.h b/indra/llcommon/llptrskipmap.h
deleted file mode 100755
index 94bc71ec55..0000000000
--- a/indra/llcommon/llptrskipmap.h
+++ /dev/null
@@ -1,1239 +0,0 @@
-/** 
- * @file llptrskipmap.h
- * @brief Just like a LLSkipMap, but since it's pointers, you can call
- * deleteAllData
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LL_LLPTRSKIPMAP_H
-#define LL_LLPTRSKIPMAP_H
-
-#include "llerror.h"
-#include "llrand.h"
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH = 8> 
-class LLPtrSkipMapNode
-{
-public:
-	LLPtrSkipMapNode()
-	{
-		S32 i;
-		for (i = 0; i < BINARY_DEPTH; i++)
-		{
-			mForward[i] = NULL;
-		}
-
-		U8  *zero = (U8 *)&mIndex;
-
-		for (i = 0; i < (S32)sizeof(INDEX_T); i++)
-		{
-			*(zero + i) = 0;
-		}
-
-		zero = (U8 *)&mData;
-
-		for (i = 0; i < (S32)sizeof(DATA_T); i++)
-		{
-			*(zero + i) = 0;
-		}
-	}
-
-	LLPtrSkipMapNode(const INDEX_T &index)
-	:	mIndex(index)
-	{
-
-		S32 i;
-		for (i = 0; i < BINARY_DEPTH; i++)
-		{
-			mForward[i] = NULL;
-		}
-
-		U8 *zero = (U8 *)&mData;
-
-		for (i = 0; i < (S32)sizeof(DATA_T); i++)
-		{
-			*(zero + i) = 0;
-		}
-	}
-
-	LLPtrSkipMapNode(const INDEX_T &index, DATA_T datap)
-	:	mIndex(index)
-	{
-
-		S32 i;
-		for (i = 0; i < BINARY_DEPTH; i++)
-		{
-			mForward[i] = NULL;
-		}
-
-		mData = datap;
-	}
-
-	~LLPtrSkipMapNode()
-	{
-	}
-
-	// delete associated data and NULLs out pointer
-	void deleteData()
-	{
-		delete mData;
-		mData = 0;
-	}
-
-	// NULLs out pointer
-	void removeData()
-	{
-		mData = 0;
-	}
-
-	INDEX_T					mIndex;
-	DATA_T					mData;
-	LLPtrSkipMapNode				*mForward[BINARY_DEPTH];
-
-private:
-	// Disallow copying of LLPtrSkipMapNodes by not implementing these methods.
-	LLPtrSkipMapNode(const LLPtrSkipMapNode &);
-	LLPtrSkipMapNode &operator=(const LLPtrSkipMapNode &rhs);
-};
-
-//---------------------------------------------------------------------------
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH = 8> 
-class LLPtrSkipMap
-{
-public:
-	typedef BOOL (*compare)(const DATA_T& first, const DATA_T& second);
-	typedef compare insert_func;
-	typedef compare equals_func;
-
-	void init();
-
-	// basic constructor
-	LLPtrSkipMap();
-
-	// basic constructor including sorter
-	LLPtrSkipMap(insert_func insert_first, equals_func equals);
-
-	~LLPtrSkipMap();
-
-	void setInsertFirst(insert_func insert_first);
-	void setEquals(equals_func equals);
-
-	DATA_T &addData(const INDEX_T &index, DATA_T datap);
-	DATA_T &addData(const INDEX_T &index);
-	DATA_T &getData(const INDEX_T &index);
-	DATA_T &operator[](const INDEX_T &index);
-
-	// If index present, returns data.
-	// If index not present, adds <index,NULL> and returns NULL.
-	DATA_T &getData(const INDEX_T &index, BOOL &b_new_entry);
-
-	// returns data entry before and after index
-	BOOL getInterval(const INDEX_T &index, INDEX_T &index_before, INDEX_T &index_after,
-		DATA_T &data_before, DATA_T &data_after	);
-
-	// Returns TRUE if data present in map.
-	BOOL checkData(const INDEX_T &index);
-
-	// Returns TRUE if key is present in map. This is useful if you
-	// are potentially storing NULL pointers in the map
-	BOOL checkKey(const INDEX_T &index);
-
-	// If there, returns the data.
-	// If not, returns NULL.
-	// Never adds entries to the map.
-	DATA_T getIfThere(const INDEX_T &index);
-
-	INDEX_T reverseLookup(const DATA_T datap);
-
-	// returns number of items in the list
-	S32 getLength(); // WARNING!  getLength is O(n), not O(1)!
-
-	BOOL removeData(const INDEX_T &index);
-	BOOL deleteData(const INDEX_T &index);
-
-	// remove all nodes from the list but do not delete data
-	void removeAllData();
-	void deleteAllData();
-
-	// place mCurrentp on first node
-	void resetList();
-
-	// return the data currently pointed to
-	DATA_T	getCurrentDataWithoutIncrement();
-
-	// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	DATA_T	getCurrentData();
-
-	// same as getCurrentData() but a more intuitive name for the operation
-	DATA_T	getNextData();
-
-	INDEX_T	getNextKey();
-
-	// return the key currently pointed to
-	INDEX_T	getCurrentKeyWithoutIncrement();
-
-	// remove the Node at mCurentOperatingp
-	// leave mCurrentp and mCurentOperatingp on the next entry
-	void removeCurrentData();
-
-	void deleteCurrentData();
-
-	// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	DATA_T	getFirstData();
-
-	INDEX_T	getFirstKey();
-
-	static BOOL	defaultEquals(const INDEX_T &first, const INDEX_T &second)
-	{
-		return first == second;
-	}
-
-private:
-	// don't generate implicit copy constructor or copy assignment
-	LLPtrSkipMap(const LLPtrSkipMap &);
-	LLPtrSkipMap &operator=(const LLPtrSkipMap &);
-
-private:
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*mUpdate[BINARY_DEPTH];
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*mCurrentp;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*mCurrentOperatingp;
-	S32							mLevel;
-	BOOL						(*mInsertFirst)(const INDEX_T &first, const INDEX_T &second);
-	BOOL						(*mEquals)(const INDEX_T &first, const INDEX_T &second);
-	S32							mNumberOfSteps;
-};
-
-//////////////////////////////////////////////////
-//
-// LLPtrSkipMap implementation
-//
-//
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::LLPtrSkipMap()
-	:	mInsertFirst(NULL),
-		mEquals(defaultEquals),
-		mNumberOfSteps(0)
-{
-	if (BINARY_DEPTH < 2)
-	{
-		llerrs << "Trying to create skip list with too little depth, "
-			"must be 2 or greater" << llendl;
-	}
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mUpdate[i] = NULL;
-	}
-	mLevel = 1;
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::LLPtrSkipMap(insert_func insert_first, 
-																 equals_func equals) 
-:	mInsertFirst(insert_first),
-	mEquals(equals),
-	mNumberOfSteps(0)
-{
-	if (BINARY_DEPTH < 2)
-	{
-		llerrs << "Trying to create skip list with too little depth, "
-			"must be 2 or greater" << llendl;
-	}
-	mLevel = 1;
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::~LLPtrSkipMap()
-{
-	removeAllData();
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::setInsertFirst(insert_func insert_first)
-{
-	mInsertFirst = insert_first;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::setEquals(equals_func equals)
-{
-	mEquals = equals;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T &LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::addData(const INDEX_T &index, DATA_T datap)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	// replace the existing data if a node is already there
-	if (  (current)
-		&&(mEquals(current->mIndex, index)))
-	{
-		current->mData = datap;
-		return current->mData;
-	}
-
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (ll_frand() < 0.5f)
-		{
-			break;
-		}
-	}
-
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH> *snode 
-		= new LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>(index, datap);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	return snode->mData;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T &LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::addData(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (ll_frand() < 0.5f)
-			break;
-	}
-
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH> *snode 
-		= new LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>(index);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	return snode->mData;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T &LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getData(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-	mNumberOfSteps++;
-
-	if (  (current)
-		&&(mEquals(current->mIndex, index)))
-	{
-		
-		return current->mData;
-	}
-	
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (ll_frand() < 0.5f)
-			break;
-	}
-
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH> *snode 
-		= new LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>(index);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	
-	return snode->mData;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline BOOL LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getInterval(const INDEX_T &index, 
-																	 INDEX_T &index_before, 
-																	 INDEX_T &index_after, 
-																	 DATA_T &data_before, 
-																	 DATA_T &data_after)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	BOOL both_found = TRUE;
-
-	if (current != &mHead)
-	{
-		index_before = current->mIndex;
-		data_before = current->mData;
-	}
-	else
-	{
-		data_before = 0;
-		index_before = 0;
-		both_found = FALSE;
-	}
-
-	// we're now just in front of where we want to be . . . take one step forward
-	mNumberOfSteps++;
-	current = *current->mForward;
-
-	if (current)
-	{
-		data_after = current->mData;
-		index_after = current->mIndex;
-	}
-	else
-	{
-		data_after = 0;
-		index_after = 0;
-		both_found = FALSE;
-	}
-
-	return both_found;
-}
-
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T &LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::operator[](const INDEX_T &index)
-{
-	
-	return getData(index);
-}
-
-// If index present, returns data.
-// If index not present, adds <index,NULL> and returns NULL.
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T &LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getData(const INDEX_T &index, BOOL &b_new_entry)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	mNumberOfSteps++;
-	current = *current->mForward;
-
-	if (  (current)
-		&&(mEquals(current->mIndex, index)))
-	{
-		
-		return current->mData;
-	}
-	b_new_entry = TRUE;
-	addData(index);
-	
-	return current->mData;
-}
-
-// Returns TRUE if data present in map.
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline BOOL LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::checkData(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (current)
-	{
-		// Gets rid of some compiler ambiguity for the LLPointer<> templated class.
-		if (current->mData)
-		{
-			return mEquals(current->mIndex, index);
-		}
-	}
-
-	return FALSE;
-}
-
-// Returns TRUE if key is present in map. This is useful if you
-// are potentially storing NULL pointers in the map
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline BOOL LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::checkKey(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (current)
-	{
-		return mEquals(current->mIndex, index);
-	}
-
-	return FALSE;
-}
-
-// If there, returns the data.
-// If not, returns NULL.
-// Never adds entries to the map.
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getIfThere(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	mNumberOfSteps++;
-	current = *current->mForward;
-
-	if (current)
-	{
-		if (mEquals(current->mIndex, index))
-		{
-			return current->mData;
-		}
-	}
-
-	// Avoid Linux compiler warning on returning NULL.
-	return (DATA_T)0;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline INDEX_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::reverseLookup(const DATA_T datap)
-{
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-
-	while (current)
-	{
-		if (datap == current->mData)
-		{
-			
-			return current->mIndex;
-		}
-		current = *current->mForward;
-	}
-
-	// not found! return NULL
-	return INDEX_T();
-}
-
-// returns number of items in the list
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline S32 LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getLength()
-{
-	U32	length = 0;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>* temp;
-	for (temp = *(mHead.mForward); temp != NULL; temp = temp->mForward[0])
-	{
-		length++;
-	}
-	
-	return length;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline BOOL LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::removeData(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (!current)
-	{
-		// empty list or beyond the end!
-		
-		return FALSE;
-	}
-
-	// is this the one we want?
-	if (!mEquals(current->mIndex, index))
-	{
-		// nope!
-		
-		return FALSE;
-	}
-	else
-	{
-		// do we need to fix current or currentop?
-		if (current == mCurrentp)
-		{
-			mCurrentp = *current->mForward;
-		}
-
-		if (current == mCurrentOperatingp)
-		{
-			mCurrentOperatingp = *current->mForward;
-		}
-		// yes it is!  change pointers as required
-		for (level = 0; level < mLevel; level++)
-		{
-			if (*((*(mUpdate + level))->mForward + level) != current)
-			{
-				// cool, we've fixed all the pointers!
-				break;
-			}
-			*((*(mUpdate + level))->mForward + level) = *(current->mForward + level);
-		}
-
-		// clean up cuurent
-		current->removeData();
-		delete current;
-
-		// clean up mHead
-		while (  (mLevel > 1)
-			   &&(!*(mHead.mForward + mLevel - 1)))
-		{
-			mLevel--;
-		}
-	}
-	
-	return TRUE;
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline BOOL LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::deleteData(const INDEX_T &index)
-{
-	S32			level;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*current = &mHead;
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH>	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (!current)
-	{
-		// empty list or beyond the end!
-		
-		return FALSE;
-	}
-
-	// is this the one we want?
-	if (!mEquals(current->mIndex, index))
-	{
-		// nope!
-		
-		return FALSE;
-	}
-	else
-	{
-		// do we need to fix current or currentop?
-		if (current == mCurrentp)
-		{
-			mCurrentp = *current->mForward;
-		}
-
-		if (current == mCurrentOperatingp)
-		{
-			mCurrentOperatingp = *current->mForward;
-		}
-		// yes it is!  change pointers as required
-		for (level = 0; level < mLevel; level++)
-		{
-			if (*((*(mUpdate + level))->mForward + level) != current)
-			{
-				// cool, we've fixed all the pointers!
-				break;
-			}
-			*((*(mUpdate + level))->mForward + level) = *(current->mForward + level);
-		}
-
-		// clean up cuurent
-		current->deleteData();
-		delete current;
-
-		// clean up mHead
-		while (  (mLevel > 1)
-			   &&(!*(mHead.mForward + mLevel - 1)))
-		{
-			mLevel--;
-		}
-	}
-	
-	return TRUE;
-}
-
-// remove all nodes from the list but do not delete data
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::removeAllData()
-{
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH> *temp;
-	// reset mCurrentp
-	mCurrentp = *(mHead.mForward);
-
-	while (mCurrentp)
-	{
-		temp = mCurrentp->mForward[0];
-		mCurrentp->removeData();
-		delete mCurrentp;
-		mCurrentp = temp;
-	}
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::deleteAllData()
-{
-	LLPtrSkipMapNode<INDEX_T, DATA_T, BINARY_DEPTH> *temp;
-	// reset mCurrentp
-	mCurrentp = *(mHead.mForward);
-
-	while (mCurrentp)
-	{
-		temp = mCurrentp->mForward[0];
-		mCurrentp->deleteData();
-		delete mCurrentp;
-		mCurrentp = temp;
-	}
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-// place mCurrentp on first node
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::resetList()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-
-// return the data currently pointed to
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getCurrentDataWithoutIncrement()
-{
-	if (mCurrentOperatingp)
-	{
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL; 		// causes warning
-		return (DATA_T)0;			// equivalent, but no warning
-	}
-}
-
-// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getCurrentData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL; 		// causes warning
-		return (DATA_T)0;			// equivalent, but no warning
-	}
-}
-
-// same as getCurrentData() but a more intuitive name for the operation
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getNextData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;	// causes compile warning
-		return (DATA_T)0;		// equivalent, but removes warning
-	}
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline INDEX_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getNextKey()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mIndex;
-	}
-	else
-	{
-		return mHead.mIndex;
-	}
-}
-
-// return the key currently pointed to
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline INDEX_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getCurrentKeyWithoutIncrement()
-{
-	if (mCurrentOperatingp)
-	{
-		return mCurrentOperatingp->mIndex;
-	}
-	else
-	{
-		//return NULL;	// causes compile warning
-		return (INDEX_T)0;		// equivalent, but removes warning
-	}
-}
-
-
-// remove the Node at mCurentOperatingp
-// leave mCurrentp and mCurentOperatingp on the next entry
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::removeCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		removeData(mCurrentOperatingp->mIndex);
-	}
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline void LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::deleteCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		deleteData(mCurrentOperatingp->mIndex);
-	}
-}
-
-// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline DATA_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getFirstData()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;	// causes compile warning
-		return (DATA_T)0;		// equivalent, but removes warning
-	}
-}
-
-template <class INDEX_T, class DATA_T, S32 BINARY_DEPTH>
-inline INDEX_T LLPtrSkipMap<INDEX_T, DATA_T, BINARY_DEPTH>::getFirstKey()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mIndex;
-	}
-	else
-	{
-		return mHead.mIndex;
-	}
-}
-
-#endif
diff --git a/indra/llcommon/llqueuedthread.cpp b/indra/llcommon/llqueuedthread.cpp
index abf47a0f57..4339f203db 100755
--- a/indra/llcommon/llqueuedthread.cpp
+++ b/indra/llcommon/llqueuedthread.cpp
@@ -28,6 +28,7 @@
 
 #include "llstl.h"
 #include "lltimer.h"	// ms_sleep()
+#include "lltracethreadrecorder.h"
 
 //============================================================================
 
@@ -134,8 +135,8 @@ S32 LLQueuedThread::updateQueue(F32 max_time_ms)
 		pending = getPending();
 		if(pending > 0)
 		{
-			unpause();
-		}
+		unpause();
+	}
 	}
 	else
 	{
@@ -403,6 +404,7 @@ S32 LLQueuedThread::processNextRequest()
 	QueuedRequest *req;
 	// Get next request from pool
 	lockData();
+	
 	while(1)
 	{
 		req = NULL;
@@ -467,10 +469,11 @@ S32 LLQueuedThread::processNextRequest()
 				ms_sleep(1); // sleep the thread a little
 			}
 		}
+		
+		LLTrace::get_thread_recorder()->pushToMaster();
 	}
 
 	S32 pending = getPending();
-
 	return pending;
 }
 
@@ -499,6 +502,7 @@ void LLQueuedThread::run()
 		
 		if (isQuitting())
 		{
+			LLTrace::get_thread_recorder()->pushToMaster();
 			endThread();
 			break;
 		}
@@ -507,8 +511,9 @@ void LLQueuedThread::run()
 
 		threadedUpdate();
 		
-		int res = processNextRequest();
-		if (res == 0)
+		int pending_work = processNextRequest();
+
+		if (pending_work == 0)
 		{
 			mIdleThread = TRUE;
 			ms_sleep(1);
diff --git a/indra/llcommon/llregistry.h b/indra/llcommon/llregistry.h
index bb0d60247e..c8ec0a0bc0 100755
--- a/indra/llcommon/llregistry.h
+++ b/indra/llcommon/llregistry.h
@@ -29,7 +29,6 @@
 
 #include <list>
 
-#include <boost/type_traits.hpp>
 #include "llsingleton.h"
 #include "llstl.h"
 
@@ -47,12 +46,11 @@ template <typename KEY, typename VALUE, typename COMPARATOR = LLRegistryDefaultC
 class LLRegistry
 {
 public:
-	typedef LLRegistry<KEY, VALUE, COMPARATOR>											registry_t;
-	typedef typename boost::add_reference<typename boost::add_const<KEY>::type>::type	ref_const_key_t;
-	typedef typename boost::add_reference<typename boost::add_const<VALUE>::type>::type	ref_const_value_t;
-	typedef typename boost::add_reference<VALUE>::type									ref_value_t;
-	typedef typename boost::add_pointer<typename boost::add_const<VALUE>::type>::type	ptr_const_value_t;
-	typedef typename boost::add_pointer<VALUE>::type									ptr_value_t;
+	typedef LLRegistry<KEY, VALUE, COMPARATOR>		registry_t;
+	typedef const KEY& 								ref_const_key_t;
+	typedef const VALUE&							ref_const_value_t;
+	typedef const VALUE*							ptr_const_value_t;
+	typedef VALUE*									ptr_value_t;
 
 	class Registrar
 	{
diff --git a/indra/llcommon/llsdparam.cpp b/indra/llcommon/llsdparam.cpp
index 9f4460a988..50815b2cc6 100755
--- a/indra/llcommon/llsdparam.cpp
+++ b/indra/llcommon/llsdparam.cpp
@@ -102,13 +102,13 @@ void LLParamSDParser::readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool
 	//readSDValues(sd, block);
 }
 
-void LLParamSDParser::writeSD(LLSD& sd, const LLInitParam::BaseBlock& block)
+void LLParamSDParser::writeSDImpl(LLSD& sd, const LLInitParam::BaseBlock& block, const LLInitParam::predicate_rule_t rules, const LLInitParam::BaseBlock* diff_block)
 {
 	mNameStack.clear();
 	mWriteRootSD = &sd;
 
 	name_stack_t name_stack;
-	block.serializeBlock(*this, name_stack);
+	block.serializeBlock(*this, name_stack, rules, diff_block);
 }
 
 /*virtual*/ std::string LLParamSDParser::getCurrentElementName()
@@ -299,6 +299,7 @@ void LLParamSDParserUtilities::readSDValues(read_sd_cb_t cb, const LLSD& sd)
 	LLInitParam::Parser::name_stack_t stack = LLInitParam::Parser::name_stack_t();
 	readSDValues(cb, sd, stack);
 }
+
 namespace LLInitParam
 {
 	// LLSD specialization
@@ -329,13 +330,14 @@ namespace LLInitParam
 		p.writeValue<LLSD::String>(sd.asString(), name_stack);
 	}
 
-	void ParamValue<LLSD, NOT_BLOCK>::serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block) const
+	bool ParamValue<LLSD, NOT_BLOCK>::serializeBlock(Parser& p, Parser::name_stack_t& name_stack_range, const predicate_rule_t predicate_rule, const BaseBlock* diff_block) const
 	{
 		// attempt to write LLSD out directly
-		if (!p.writeValue<LLSD>(mValue, name_stack))
+		if (!p.writeValue<LLSD>(mValue, name_stack_range))
 		{
 			// otherwise read from LLSD value and serialize out to parser (which could be LLSD, XUI, etc)
-			LLParamSDParserUtilities::readSDValues(boost::bind(&serializeElement, boost::ref(p), _1, _2), mValue, name_stack);
+			LLParamSDParserUtilities::readSDValues(boost::bind(&serializeElement, boost::ref(p), _1, _2), mValue, name_stack_range);
 		}
+		return true;
 	}
 }
diff --git a/indra/llcommon/llsdparam.h b/indra/llcommon/llsdparam.h
index 6ef5debd7b..7cfc265c62 100755
--- a/indra/llcommon/llsdparam.h
+++ b/indra/llcommon/llsdparam.h
@@ -30,6 +30,7 @@
 
 #include "llinitparam.h"
 #include "boost/function.hpp"
+#include "llfasttimer.h"
 
 struct LL_COMMON_API LLParamSDParserUtilities
 {
@@ -50,11 +51,28 @@ typedef LLInitParam::Parser parser_t;
 public:
 	LLParamSDParser();
 	void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
-	void writeSD(LLSD& sd, const LLInitParam::BaseBlock& block);
+	template<typename BLOCK>
+	void writeSD(LLSD& sd, 
+		const BLOCK& block, 
+		const LLInitParam::predicate_rule_t rules = LLInitParam::default_parse_rules(),
+		const LLInitParam::BaseBlock* diff_block = NULL)
+	{
+		if (!diff_block 
+			&& !rules.isAmbivalent(LLInitParam::HAS_DEFAULT_VALUE))
+		{
+			diff_block = &LLInitParam::defaultValue<BLOCK>();
+		}
+		writeSDImpl(sd, block, rules, diff_block);
+	}
 
 	/*virtual*/ std::string getCurrentElementName();
 
 private:
+	void writeSDImpl(LLSD& sd, 
+		const LLInitParam::BaseBlock& block, 
+		const LLInitParam::predicate_rule_t,
+		const LLInitParam::BaseBlock* diff_block);
+
 	void submit(LLInitParam::BaseBlock& block, const LLSD& sd, LLInitParam::Parser::name_stack_t& name_stack);
 
 	template<typename T>
diff --git a/indra/llcommon/llsingleton.cpp b/indra/llcommon/llsingleton.cpp
index eb8e2c9456..9b49e52377 100755
--- a/indra/llcommon/llsingleton.cpp
+++ b/indra/llcommon/llsingleton.cpp
@@ -28,5 +28,4 @@
 
 #include "llsingleton.h"
 
-std::map<std::string, void *> * LLSingletonRegistry::sSingletonMap = NULL;
 
diff --git a/indra/llcommon/llsingleton.h b/indra/llcommon/llsingleton.h
index 49d99f2cd0..b9cb8e3d41 100755
--- a/indra/llcommon/llsingleton.h
+++ b/indra/llcommon/llsingleton.h
@@ -30,38 +30,6 @@
 #include <typeinfo>
 #include <boost/noncopyable.hpp>
 
-/// @brief A global registry of all singletons to prevent duplicate allocations
-/// across shared library boundaries
-class LL_COMMON_API LLSingletonRegistry {
-	private:
-		typedef std::map<std::string, void *> TypeMap;
-		static TypeMap * sSingletonMap;
-
-		static void checkInit()
-		{
-			if(sSingletonMap == NULL)
-			{
-				sSingletonMap = new TypeMap();
-			}
-		}
-
-	public:
-		template<typename T> static void * & get()
-		{
-			std::string name(typeid(T).name());
-
-			checkInit();
-
-			// the first entry of the pair returned by insert will be either the existing
-			// iterator matching our key, or the newly inserted NULL initialized entry
-			// see "Insert element" in http://www.sgi.com/tech/stl/UniqueAssociativeContainer.html
-			TypeMap::iterator result =
-				sSingletonMap->insert(std::make_pair(name, (void*)NULL)).first;
-
-			return result->second;
-		}
-};
-
 // LLSingleton implements the getInstance() method part of the Singleton
 // pattern. It can't make the derived class constructors protected, though, so
 // you have to do that yourself.
@@ -99,22 +67,30 @@ private:
 		INITIALIZED,
 		DELETED
 	} EInitState;
+    
+    static DERIVED_TYPE* constructSingleton()
+    {
+        return new DERIVED_TYPE();
+    }
 	
 	// stores pointer to singleton instance
-	// and tracks initialization state of singleton
-	struct SingletonInstanceData
+	struct SingletonLifetimeManager
 	{
-		EInitState		mInitState;
-		DERIVED_TYPE*	mSingletonInstance;
-		
-		SingletonInstanceData()
-		:	mSingletonInstance(NULL),
-			mInitState(UNINITIALIZED)
-		{}
-
-		~SingletonInstanceData()
+		SingletonLifetimeManager()
+		{
+			construct();
+		}
+
+		static void construct()
 		{
-			if (mInitState != DELETED)
+			sData.mInitState = CONSTRUCTING;
+			sData.mInstance = constructSingleton();
+			sData.mInitState = INITIALIZING;
+		}
+
+		~SingletonLifetimeManager()
+		{
+			if (sData.mInitState != DELETED)
 			{
 				deleteSingleton();
 			}
@@ -124,9 +100,8 @@ private:
 public:
 	virtual ~LLSingleton()
 	{
-		SingletonInstanceData& data = getData();
-		data.mSingletonInstance = NULL;
-		data.mInitState = DELETED;
+		sData.mInstance = NULL;
+		sData.mInitState = DELETED;
 	}
 
 	/**
@@ -151,50 +126,49 @@ public:
 	 */
 	static void deleteSingleton()
 	{
-		delete getData().mSingletonInstance;
-		getData().mSingletonInstance = NULL;
-		getData().mInitState = DELETED;
+		delete sData.mInstance;
+		sData.mInstance = NULL;
+		sData.mInitState = DELETED;
 	}
 
-	static SingletonInstanceData& getData()
-	{
-		// this is static to cache the lookup results
-		static void * & registry = LLSingletonRegistry::get<DERIVED_TYPE>();
-
-		// *TODO - look into making this threadsafe
-		if(NULL == registry)
-		{
-			static SingletonInstanceData data;
-			registry = &data;
-		}
-
-		return *static_cast<SingletonInstanceData *>(registry);
-	}
 
 	static DERIVED_TYPE* getInstance()
 	{
-		SingletonInstanceData& data = getData();
+		static SingletonLifetimeManager sLifeTimeMgr;
 
-		if (data.mInitState == CONSTRUCTING)
+		switch (sData.mInitState)
 		{
+		case UNINITIALIZED:
+			// should never be uninitialized at this point
+			llassert(false);
+			return NULL;
+		case CONSTRUCTING:
 			llerrs << "Tried to access singleton " << typeid(DERIVED_TYPE).name() << " from singleton constructor!" << llendl;
-		}
-
-		if (data.mInitState == DELETED)
-		{
+			return NULL;
+		case INITIALIZING:
+			// go ahead and flag ourselves as initialized so we can be reentrant during initialization
+			sData.mInitState = INITIALIZED;	
+			// initialize singleton after constructing it so that it can reference other singletons which in turn depend on it,
+			// thus breaking cyclic dependencies
+			sData.mInstance->initSingleton(); 
+			return sData.mInstance;
+		case INITIALIZED:
+			return sData.mInstance;
+		case DELETED:
 			llwarns << "Trying to access deleted singleton " << typeid(DERIVED_TYPE).name() << " creating new instance" << llendl;
+			SingletonLifetimeManager::construct();
+			// same as first time construction
+			sData.mInitState = INITIALIZED;	
+			sData.mInstance->initSingleton(); 
+			return sData.mInstance;
 		}
-		
-		if (!data.mSingletonInstance) 
-		{
-			data.mInitState = CONSTRUCTING;
-			data.mSingletonInstance = new DERIVED_TYPE(); 
-			data.mInitState = INITIALIZING;
-			data.mSingletonInstance->initSingleton(); 
-			data.mInitState = INITIALIZED;	
-		}
-		
-		return data.mSingletonInstance;
+
+		return NULL;
+	}
+
+	static DERIVED_TYPE* getIfExists()
+	{
+		return sData.mInstance;
 	}
 
 	// Reference version of getInstance()
@@ -208,18 +182,31 @@ public:
 	// Use this to avoid accessing singletons before the can safely be constructed
 	static bool instanceExists()
 	{
-		return getData().mInitState == INITIALIZED;
+		return sData.mInitState == INITIALIZED;
 	}
 	
 	// Has this singleton already been deleted?
 	// Use this to avoid accessing singletons from a static object's destructor
 	static bool destroyed()
 	{
-		return getData().mInitState == DELETED;
+		return sData.mInitState == DELETED;
 	}
 
 private:
+
 	virtual void initSingleton() {}
+
+	struct SingletonData
+	{
+		// explicitly has a default constructor so that member variables are zero initialized in BSS
+		// and only changed by singleton logic, not constructor running during startup
+		EInitState		mInitState;
+		DERIVED_TYPE*	mInstance;
+	};
+	static SingletonData sData;
 };
 
+template<typename T>
+typename LLSingleton<T>::SingletonData LLSingleton<T>::sData;
+
 #endif
diff --git a/indra/llcommon/llskiplist.h b/indra/llcommon/llskiplist.h
deleted file mode 100755
index ed132381f9..0000000000
--- a/indra/llcommon/llskiplist.h
+++ /dev/null
@@ -1,517 +0,0 @@
-/** 
- * @file llskiplist.h
- * @brief skip list implementation
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LL_LLSKIPLIST_H
-#define LL_LLSKIPLIST_H
-
-#include "llrand.h"
-#include "llrand.h"
-
-// NOTA BENE: Insert first needs to be < NOT <=
-// Binary depth must be >= 2
-template <class DATA_TYPE, S32 BINARY_DEPTH = 10>
-class LLSkipList
-{
-public:
-	typedef BOOL (*compare)(const DATA_TYPE& first, const DATA_TYPE& second);
-	typedef compare insert_func;
-	typedef compare equals_func;
-
-	void init();
-
-	// basic constructor
-	LLSkipList();
-
-	// basic constructor including sorter
-	LLSkipList(insert_func insert_first, equals_func equals);
-	~LLSkipList();
-
-	inline void setInsertFirst(insert_func insert_first);
-	inline void setEquals(equals_func equals);
-
-	inline BOOL addData(const DATA_TYPE& data);
-	inline BOOL checkData(const DATA_TYPE& data);
-
-	// returns number of items in the list
-	inline S32 getLength() const; // NOT a constant time operation, traverses entire list!
-
-	inline BOOL moveData(const DATA_TYPE& data, LLSkipList *newlist);
-
-	inline BOOL removeData(const DATA_TYPE& data);
-
-	// remove all nodes from the list but do not delete data
-	inline void removeAllNodes();
-
-	// place mCurrentp on first node
-	inline void resetList();
-
-	// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	inline DATA_TYPE getCurrentData();
-
-	// same as getCurrentData() but a more intuitive name for the operation
-	inline DATA_TYPE getNextData();
-
-	// remove the Node at mCurentOperatingp
-	// leave mCurrentp and mCurentOperatingp on the next entry
-	inline void removeCurrentData();
-
-	// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	inline DATA_TYPE getFirstData();
-
-	class LLSkipNode
-	{
-	public:
-		LLSkipNode()
-		:	mData(0)
-		{
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-		}
-
-		LLSkipNode(DATA_TYPE data)
-			: mData(data)
-		{
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-		}
-
-		~LLSkipNode()
-		{
-		}
-
-		DATA_TYPE					mData;
-		LLSkipNode					*mForward[BINARY_DEPTH];
-
-	private:
-		// Disallow copying of LLSkipNodes by not implementing these methods.
-		LLSkipNode(const LLSkipNode &);
-		LLSkipNode &operator=(const LLSkipNode &);
-	};
-
-	static BOOL defaultEquals(const DATA_TYPE& first, const DATA_TYPE& second)
-	{
-		return first == second;
-	}
-
-private:
-	LLSkipNode					mHead;
-	LLSkipNode					*mUpdate[BINARY_DEPTH];
-	LLSkipNode					*mCurrentp;
-	LLSkipNode					*mCurrentOperatingp;
-	S32							mLevel;
-	insert_func mInsertFirst;
-	equals_func mEquals;
-
-private:
-	// Disallow copying of LLSkipNodes by not implementing these methods.
-	LLSkipList(const LLSkipList &);
-	LLSkipList &operator=(const LLSkipList &);
-};
-
-
-///////////////////////
-//
-// Implementation
-//
-
-
-// Binary depth must be >= 2
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipList<DATA_TYPE, BINARY_DEPTH>::init()
-{
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-	mLevel = 1;
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-
-// basic constructor
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLSkipList<DATA_TYPE, BINARY_DEPTH>::LLSkipList()
-:	mInsertFirst(NULL), 
-	mEquals(defaultEquals)
-{
-	init();
-}
-
-// basic constructor including sorter
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLSkipList<DATA_TYPE, BINARY_DEPTH>::LLSkipList(insert_func insert,
-													   equals_func equals)
-:	mInsertFirst(insert), 
-	mEquals(equals)
-{
-	init();
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLSkipList<DATA_TYPE, BINARY_DEPTH>::~LLSkipList()
-{
-	removeAllNodes();
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipList<DATA_TYPE, BINARY_DEPTH>::setInsertFirst(insert_func insert_first)
-{
-	mInsertFirst = insert_first;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipList<DATA_TYPE, BINARY_DEPTH>::setEquals(equals_func equals)
-{
-	mEquals = equals;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipList<DATA_TYPE, BINARY_DEPTH>::addData(const DATA_TYPE& data)
-{
-	S32			level;
-	LLSkipNode	*current = &mHead;
-	LLSkipNode	*temp;
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (ll_frand() < 0.5f)
-			break;
-	}
-
-	LLSkipNode *snode = new LLSkipNode(data);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	return TRUE;
-}
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipList<DATA_TYPE, BINARY_DEPTH>::checkData(const DATA_TYPE& data)
-{
-	S32			level;
-	LLSkipNode	*current = &mHead;
-	LLSkipNode	*temp;
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-
-	if (current)
-	{
-		return mEquals(current->mData, data);
-	}
-
-	return FALSE;
-}
-
-// returns number of items in the list
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline S32 LLSkipList<DATA_TYPE, BINARY_DEPTH>::getLength() const
-{
-	U32	length = 0;
-	for (LLSkipNode* temp = *(mHead.mForward); temp != NULL; temp = temp->mForward[0])
-	{
-		length++;
-	}
-	return length;
-}
-
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipList<DATA_TYPE, BINARY_DEPTH>::moveData(const DATA_TYPE& data, LLSkipList *newlist)
-{
-	BOOL removed = removeData(data);
-	BOOL added = newlist->addData(data);
-	return removed && added;
-}
-
-
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipList<DATA_TYPE, BINARY_DEPTH>::removeData(const DATA_TYPE& data)
-{
-	S32			level;
-	LLSkipNode	*current = &mHead;
-	LLSkipNode	*temp;
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mData, data)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mData < data))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-
-	if (!current)
-	{
-		// empty list or beyond the end!
-		return FALSE;
-	}
-
-	// is this the one we want?
-	if (!mEquals(current->mData, data))
-	{
-		// nope!
-		return FALSE;
-	}
-	else
-	{
-		// do we need to fix current or currentop?
-		if (current == mCurrentp)
-		{
-			mCurrentp = current->mForward[0];
-		}
-
-		if (current == mCurrentOperatingp)
-		{
-			mCurrentOperatingp = current->mForward[0];
-		}
-		// yes it is!  change pointers as required
-		for (level = 0; level < mLevel; level++)
-		{
-			if (mUpdate[level]->mForward[level] != current)
-			{
-				// cool, we've fixed all the pointers!
-				break;
-			}
-			mUpdate[level]->mForward[level] = current->mForward[level];
-		}
-
-		// clean up cuurent
-		delete current;
-
-		// clean up mHead
-		while (  (mLevel > 1)
-			   &&(!mHead.mForward[mLevel - 1]))
-		{
-			mLevel--;
-		}
-	}
-	return TRUE;
-}
-
-// remove all nodes from the list but do not delete data
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipList<DATA_TYPE, BINARY_DEPTH>::removeAllNodes()
-{
-	LLSkipNode *temp;
-	// reset mCurrentp
-	mCurrentp = *(mHead.mForward);
-
-	while (mCurrentp)
-	{
-		temp = mCurrentp->mForward[0];
-		delete mCurrentp;
-		mCurrentp = temp;
-	}
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-// place mCurrentp on first node
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipList<DATA_TYPE, BINARY_DEPTH>::resetList()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipList<DATA_TYPE, BINARY_DEPTH>::getCurrentData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;		// causes compile warning
-		return (DATA_TYPE)0; 			// equivalent, but no warning
-	}
-}
-
-// same as getCurrentData() but a more intuitive name for the operation
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipList<DATA_TYPE, BINARY_DEPTH>::getNextData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;		// causes compile warning
-		return (DATA_TYPE)0; 			// equivalent, but no warning
-	}
-}
-
-// remove the Node at mCurentOperatingp
-// leave mCurrentp and mCurentOperatingp on the next entry
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipList<DATA_TYPE, BINARY_DEPTH>::removeCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		removeData(mCurrentOperatingp->mData);
-	}
-}
-
-// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipList<DATA_TYPE, BINARY_DEPTH>::getFirstData()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		//return NULL;		// causes compile warning
-		return (DATA_TYPE)0; 			// equivalent, but no warning
-	}
-}
-
-
-#endif
diff --git a/indra/llcommon/llskipmap.h b/indra/llcommon/llskipmap.h
deleted file mode 100755
index 49ff2928d1..0000000000
--- a/indra/llcommon/llskipmap.h
+++ /dev/null
@@ -1,1022 +0,0 @@
-/** 
- * @file llskipmap.h
- * @brief Associative container based on the skiplist algorithm.
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLSKIPMAP_H
-#define LL_LLSKIPMAP_H
-
-#include "llerror.h"
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH = 8> 
-class LLSkipMap
-{
-public:
-	// basic constructor
-	LLSkipMap();
-
-	// basic constructor including sorter
-	LLSkipMap(BOOL	(*insert_first)(const INDEX_TYPE &first, const INDEX_TYPE &second), 
-			   BOOL	(*equals)(const INDEX_TYPE &first, const INDEX_TYPE &second));
-
-	~LLSkipMap();
-
-	void setInsertFirst(BOOL (*insert_first)(const INDEX_TYPE &first, const INDEX_TYPE &second));
-	void setEquals(BOOL (*equals)(const INDEX_TYPE &first, const INDEX_TYPE &second));
-
-	DATA_TYPE &addData(const INDEX_TYPE &index, DATA_TYPE datap);
-	DATA_TYPE &addData(const INDEX_TYPE &index);
-	DATA_TYPE &getData(const INDEX_TYPE &index);
-	DATA_TYPE &operator[](const INDEX_TYPE &index);
-
-	// If index present, returns data.
-	// If index not present, adds <index,NULL> and returns NULL.
-	DATA_TYPE &getData(const INDEX_TYPE &index, BOOL &b_new_entry);
-
-	// Returns TRUE if data present in map.
-	BOOL checkData(const INDEX_TYPE &index);
-
-	// Returns TRUE if key is present in map. This is useful if you
-	// are potentially storing NULL pointers in the map
-	BOOL checkKey(const INDEX_TYPE &index);
-
-	// If there, returns the data.
-	// If not, returns NULL.
-	// Never adds entries to the map.
-	DATA_TYPE getIfThere(const INDEX_TYPE &index);
-
-	INDEX_TYPE reverseLookup(const DATA_TYPE datap);
-
-	// returns number of items in the list
-	S32 getLength(); // WARNING!  getLength is O(n), not O(1)!
-
-	BOOL removeData(const INDEX_TYPE &index);
-
-	// remove all nodes from the list but do not delete data
-	void removeAllData();
-
-	// place mCurrentp on first node
-	void resetList();
-
-	// return the data currently pointed to
-	DATA_TYPE	getCurrentDataWithoutIncrement();
-
-	// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	DATA_TYPE	getCurrentData();
-
-	// same as getCurrentData() but a more intuitive name for the operation
-	DATA_TYPE	getNextData();
-
-	INDEX_TYPE	getNextKey();
-
-	// return the key currently pointed to
-	INDEX_TYPE	getCurrentKeyWithoutIncrement();
-
-	// The internal iterator is at the end of the list.
-	BOOL		notDone() const;
-
-	// remove the Node at mCurentOperatingp
-	// leave mCurrentp and mCurentOperatingp on the next entry
-	void removeCurrentData();
-
-	void deleteCurrentData();
-
-	// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-	DATA_TYPE	getFirstData();
-
-	INDEX_TYPE	getFirstKey();
-
-	class LLSkipMapNode
-	{
-	public:
-		LLSkipMapNode()
-		{
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-
-			U8  *zero = (U8 *)&mIndex;
-
-			for (i = 0; i < (S32)sizeof(INDEX_TYPE); i++)
-			{
-				*(zero + i) = 0;
-			}
-
-			zero = (U8 *)&mData;
-
-			for (i = 0; i < (S32)sizeof(DATA_TYPE); i++)
-			{
-				*(zero + i) = 0;
-			}
-		}
-
-		LLSkipMapNode(const INDEX_TYPE &index)
-		:	mIndex(index)
-		{
-
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-
-			U8 *zero = (U8 *)&mData;
-
-			for (i = 0; i < (S32)sizeof(DATA_TYPE); i++)
-			{
-				*(zero + i) = 0;
-			}
-		}
-
-		LLSkipMapNode(const INDEX_TYPE &index, DATA_TYPE datap)
-		:	mIndex(index)
-		{
-
-			S32 i;
-			for (i = 0; i < BINARY_DEPTH; i++)
-			{
-				mForward[i] = NULL;
-			}
-
-			mData = datap;
-		}
-
-		~LLSkipMapNode()
-		{
-		}
-
-
-		INDEX_TYPE					mIndex;
-		DATA_TYPE					mData;
-		LLSkipMapNode				*mForward[BINARY_DEPTH];
-
-	private:
-		// Disallow copying of LLSkipMapNodes by not implementing these methods.
-		LLSkipMapNode(const LLSkipMapNode &);
-		LLSkipMapNode &operator=(const LLSkipMapNode &rhs);
-	};
-
-	static BOOL	defaultEquals(const INDEX_TYPE &first, const INDEX_TYPE &second)
-	{
-		return first == second;
-	}
-
-private:
-	// don't generate implicit copy constructor or copy assignment
-	LLSkipMap(const LLSkipMap &);
-	LLSkipMap &operator=(const LLSkipMap &);
-
-private:
-	LLSkipMapNode				mHead;
-	LLSkipMapNode				*mUpdate[BINARY_DEPTH];
-	LLSkipMapNode				*mCurrentp;
-	LLSkipMapNode				*mCurrentOperatingp;
-	S32							mLevel;
-	BOOL						(*mInsertFirst)(const INDEX_TYPE &first, const INDEX_TYPE &second);
-	BOOL						(*mEquals)(const INDEX_TYPE &first, const INDEX_TYPE &second);
-	S32							mNumberOfSteps;
-};
-
-//////////////////////////////////////////////////
-//
-// LLSkipMap implementation
-//
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::LLSkipMap()
-	:	mInsertFirst(NULL),
-		mEquals(defaultEquals)
-{
-	// Skipmaps must have binary depth of at least 2
-	cassert(BINARY_DEPTH >= 2);
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mUpdate[i] = NULL;
-	}
-	mLevel = 1;
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::LLSkipMap(BOOL	(*insert_first)(const INDEX_TYPE &first, const INDEX_TYPE &second), 
-			   BOOL	(*equals)(const INDEX_TYPE &first, const INDEX_TYPE &second)) 
-	:	mInsertFirst(insert_first),
-		mEquals(equals)
-{
-	// Skipmaps must have binary depth of at least 2
-	cassert(BINARY_DEPTH >= 2);
-
-	mLevel = 1;
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::~LLSkipMap()
-{
-	removeAllData();
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::setInsertFirst(BOOL (*insert_first)(const INDEX_TYPE &first, const INDEX_TYPE &second))
-{
-	mInsertFirst = insert_first;
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::setEquals(BOOL (*equals)(const INDEX_TYPE &first, const INDEX_TYPE &second))
-{
-	mEquals = equals;
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE &LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::addData(const INDEX_TYPE &index, DATA_TYPE datap)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	// replace the existing data if a node is already there
-	if (  (current)
-		&&(mEquals(current->mIndex, index)))
-	{
-		current->mData = datap;
-		return current->mData;
-	}
-
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (rand() & 1)
-		{
-			break;
-		}
-	}
-
-	LLSkipMapNode *snode = new LLSkipMapNode(index, datap);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	return snode->mData;
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE &LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::addData(const INDEX_TYPE &index)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (rand() & 1)
-			break;
-	}
-
-	LLSkipMapNode *snode = new LLSkipMapNode(index);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	return snode->mData;
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE &LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getData(const INDEX_TYPE &index)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-	mNumberOfSteps++;
-
-	if (  (current)
-		&&(mEquals(current->mIndex, index)))
-	{
-		
-		return current->mData;
-	}
-	
-	// now add the new node
-	S32 newlevel;
-	for (newlevel = 1; newlevel <= mLevel && newlevel < BINARY_DEPTH; newlevel++)
-	{
-		if (rand() & 1)
-			break;
-	}
-
-	LLSkipMapNode *snode = new LLSkipMapNode(index);
-
-	if (newlevel > mLevel)
-	{
-		mHead.mForward[mLevel] = NULL;
-		mUpdate[mLevel] = &mHead;
-		mLevel = newlevel;
-	}
-
-	for (level = 0; level < newlevel; level++)
-	{
-		snode->mForward[level] = mUpdate[level]->mForward[level];
-		mUpdate[level]->mForward[level] = snode;
-	}
-	
-	return snode->mData;
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE &LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::operator[](const INDEX_TYPE &index)
-{
-	
-	return getData(index);
-}
-
-// If index present, returns data.
-// If index not present, adds <index,NULL> and returns NULL.
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE &LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getData(const INDEX_TYPE &index, BOOL &b_new_entry)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	mNumberOfSteps++;
-	current = *current->mForward;
-
-	if (  (current)
-		&&(mEquals(current->mIndex, index)))
-	{
-		
-		return current->mData;
-	}
-	b_new_entry = TRUE;
-	addData(index);
-	
-	return current->mData;
-}
-
-// Returns TRUE if data present in map.
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::checkData(const INDEX_TYPE &index)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (current)
-	{
-		// Gets rid of some compiler ambiguity for the LLPointer<> templated class.
-		if (current->mData)
-		{
-			return mEquals(current->mIndex, index);
-		}
-	}
-
-	return FALSE;
-}
-
-// Returns TRUE if key is present in map. This is useful if you
-// are potentially storing NULL pointers in the map
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::checkKey(const INDEX_TYPE &index)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (current)
-	{
-		return mEquals(current->mIndex, index);
-	}
-
-	return FALSE;
-}
-
-// If there, returns the data.
-// If not, returns NULL.
-// Never adds entries to the map.
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getIfThere(const INDEX_TYPE &index)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	mNumberOfSteps = 0;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-				mNumberOfSteps++;
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	mNumberOfSteps++;
-	current = *current->mForward;
-
-	if (current)
-	{
-		if (mEquals(current->mIndex, index))
-		{
-			return current->mData;
-		}
-	}
-
-	// Avoid Linux compiler warning on returning NULL.
-	return DATA_TYPE();
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline INDEX_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::reverseLookup(const DATA_TYPE datap)
-{
-	LLSkipMapNode	*current = &mHead;
-
-	while (current)
-	{
-		if (datap == current->mData)
-		{
-			
-			return current->mIndex;
-		}
-		current = *current->mForward;
-	}
-
-	// not found! return NULL
-	return INDEX_TYPE();
-}
-
-// returns number of items in the list
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline S32 LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getLength()
-{
-	U32	length = 0;
-	for (LLSkipMapNode* temp = *(mHead.mForward); temp != NULL; temp = temp->mForward[0])
-	{
-		length++;
-	}
-	
-	return length;
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::removeData(const INDEX_TYPE &index)
-{
-	S32			level;
-	LLSkipMapNode	*current = &mHead;
-	LLSkipMapNode	*temp;
-
-	// find the pointer one in front of the one we want
-	if (mInsertFirst)
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(mInsertFirst(temp->mIndex, index)))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	else
-	{
-		for (level = mLevel - 1; level >= 0; level--)
-		{
-			temp = *(current->mForward + level);
-			while (  (temp)
-				   &&(temp->mIndex < index))
-			{
-				current = temp;
-				temp = *(current->mForward + level);
-			}
-			*(mUpdate + level) = current;
-		}
-	}
-	
-	// we're now just in front of where we want to be . . . take one step forward
-	current = *current->mForward;
-
-	if (!current)
-	{
-		// empty list or beyond the end!
-		
-		return FALSE;
-	}
-
-	// is this the one we want?
-	if (!mEquals(current->mIndex, index))
-	{
-		// nope!
-		
-		return FALSE;
-	}
-	else
-	{
-		// do we need to fix current or currentop?
-		if (current == mCurrentp)
-		{
-			mCurrentp = *current->mForward;
-		}
-
-		if (current == mCurrentOperatingp)
-		{
-			mCurrentOperatingp = *current->mForward;
-		}
-		// yes it is!  change pointers as required
-		for (level = 0; level < mLevel; level++)
-		{
-			if (*((*(mUpdate + level))->mForward + level) != current)
-			{
-				// cool, we've fixed all the pointers!
-				break;
-			}
-			*((*(mUpdate + level))->mForward + level) = *(current->mForward + level);
-		}
-
-		delete current;
-
-		// clean up mHead
-		while (  (mLevel > 1)
-			   &&(!*(mHead.mForward + mLevel - 1)))
-		{
-			mLevel--;
-		}
-	}
-	
-	return TRUE;
-}
-
-
-// remove all nodes from the list but do not delete data
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-void LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::removeAllData()
-{
-	LLSkipMapNode *temp;
-	// reset mCurrentp
-	mCurrentp = *(mHead.mForward);
-
-	while (mCurrentp)
-	{
-		temp = mCurrentp->mForward[0];
-		delete mCurrentp;
-		mCurrentp = temp;
-	}
-
-	S32 i;
-	for (i = 0; i < BINARY_DEPTH; i++)
-	{
-		mHead.mForward[i] = NULL;
-		mUpdate[i] = NULL;
-	}
-
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-
-// place mCurrentp on first node
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::resetList()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-}
-
-
-// return the data currently pointed to
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getCurrentDataWithoutIncrement()
-{
-	if (mCurrentOperatingp)
-	{
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		return DATA_TYPE();
-	}
-}
-
-// return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getCurrentData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		// Basic types, like int, have default constructors that initialize
-		// them to zero.  g++ 2.95 supports this.  "int()" is zero.
-		// This also is nice for LLUUID()
-		return DATA_TYPE();
-	}
-}
-
-// same as getCurrentData() but a more intuitive name for the operation
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getNextData()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		// Basic types, like int, have default constructors that initialize
-		// them to zero.  g++ 2.95 supports this.  "int()" is zero.
-		// This also is nice for LLUUID()
-		return DATA_TYPE();
-	}
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline INDEX_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getNextKey()
-{
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mIndex;
-	}
-	else
-	{
-		return mHead.mIndex;
-	}
-}
-
-// return the key currently pointed to
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline INDEX_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getCurrentKeyWithoutIncrement()
-{
-	if (mCurrentOperatingp)
-	{
-		return mCurrentOperatingp->mIndex;
-	}
-	else
-	{
-		// See comment for getNextData()
-		return INDEX_TYPE();
-	}
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline BOOL LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::notDone() const
-{
-	if (mCurrentOperatingp)
-	{
-		return TRUE;
-	}
-	else
-	{
-		return FALSE;
-	}
-}
-
-
-// remove the Node at mCurentOperatingp
-// leave mCurrentp and mCurentOperatingp on the next entry
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::removeCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		removeData(mCurrentOperatingp->mIndex);
-	}
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline void LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::deleteCurrentData()
-{
-	if (mCurrentOperatingp)
-	{
-		deleteData(mCurrentOperatingp->mIndex);
-	}
-}
-
-// reset the list and return the data currently pointed to, set mCurentOperatingp to that node and bump mCurrentp
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline DATA_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getFirstData()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mData;
-	}
-	else
-	{
-		// See comment for getNextData()
-		return DATA_TYPE();
-	}
-}
-
-template <class INDEX_TYPE, class DATA_TYPE, S32 BINARY_DEPTH>
-inline INDEX_TYPE LLSkipMap<INDEX_TYPE, DATA_TYPE, BINARY_DEPTH>::getFirstKey()
-{
-	mCurrentp = *(mHead.mForward);
-	mCurrentOperatingp = *(mHead.mForward);
-	if (mCurrentp)
-	{
-		mCurrentOperatingp = mCurrentp;
-		mCurrentp = mCurrentp->mForward[0];
-		return mCurrentOperatingp->mIndex;
-	}
-	else
-	{
-		return mHead.mIndex;
-	}
-}
-
-#endif
diff --git a/indra/llcommon/llsortedvector.h b/indra/llcommon/llsortedvector.h
deleted file mode 100755
index 391b82ee44..0000000000
--- a/indra/llcommon/llsortedvector.h
+++ /dev/null
@@ -1,152 +0,0 @@
-/**
- * @file   llsortedvector.h
- * @author Nat Goodspeed
- * @date   2012-04-08
- * @brief  LLSortedVector class wraps a vector that we maintain in sorted
- *         order so we can perform binary-search lookups.
- * 
- * $LicenseInfo:firstyear=2012&license=viewerlgpl$
- * Copyright (c) 2012, Linden Research, Inc.
- * $/LicenseInfo$
- */
-
-#if ! defined(LL_LLSORTEDVECTOR_H)
-#define LL_LLSORTEDVECTOR_H
-
-#include <vector>
-#include <algorithm>
-
-/**
- * LLSortedVector contains a std::vector<std::pair> that we keep sorted on the
- * first of the pair. This makes insertion somewhat more expensive than simple
- * std::vector::push_back(), but allows us to use binary search for lookups.
- * It's intended for small aggregates where lookup is far more performance-
- * critical than insertion; in such cases a binary search on a small, sorted
- * std::vector can be more performant than a std::map lookup.
- */
-template <typename KEY, typename VALUE>
-class LLSortedVector
-{
-public:
-    typedef LLSortedVector<KEY, VALUE> self;
-    typedef KEY key_type;
-    typedef VALUE mapped_type;
-    typedef std::pair<key_type, mapped_type> value_type;
-    typedef std::vector<value_type> PairVector;
-    typedef typename PairVector::iterator iterator;
-    typedef typename PairVector::const_iterator const_iterator;
-
-    /// Empty
-    LLSortedVector() {}
-
-    /// Fixed initial size
-    LLSortedVector(std::size_t size):
-        mVector(size)
-    {}
-
-    /// Bulk load
-    template <typename ITER>
-    LLSortedVector(ITER begin, ITER end):
-        mVector(begin, end)
-    {
-        // Allow caller to dump in a bunch of (pairs convertible to)
-        // value_type if desired, but make sure we sort afterwards.
-        std::sort(mVector.begin(), mVector.end());
-    }
-
-    /// insert(key, value)
-    std::pair<iterator, bool> insert(const key_type& key, const mapped_type& value)
-    {
-        return insert(value_type(key, value));
-    }
-
-    /// insert(value_type)
-    std::pair<iterator, bool> insert(const value_type& pair)
-    {
-        typedef std::pair<iterator, bool> iterbool;
-        iterator found = std::lower_bound(mVector.begin(), mVector.end(), pair,
-                                          less<value_type>());
-        // have to check for end() before it's even valid to dereference
-        if (found == mVector.end())
-        {
-            std::size_t index(mVector.size());
-            mVector.push_back(pair);
-            // don't forget that push_back() invalidates 'found'
-            return iterbool(mVector.begin() + index, true);
-        }
-        if (found->first == pair.first)
-        {
-            return iterbool(found, false);
-        }
-        // remember that insert() invalidates 'found' -- save index
-        std::size_t index(found - mVector.begin());
-        mVector.insert(found, pair);
-        // okay, convert from index back to iterator
-        return iterbool(mVector.begin() + index, true);
-    }
-
-    iterator begin() { return mVector.begin(); }
-    iterator end()   { return mVector.end(); }
-    const_iterator begin() const { return mVector.begin(); }
-    const_iterator end()   const { return mVector.end(); }
-
-    bool empty() const { return mVector.empty(); }
-    std::size_t size() const { return mVector.size(); }
-
-    /// find
-    iterator find(const key_type& key)
-    {
-        iterator found = std::lower_bound(mVector.begin(), mVector.end(),
-                                          value_type(key, mapped_type()),
-                                          less<value_type>());
-        if (found == mVector.end() || found->first != key)
-            return mVector.end();
-        return found;
-    }
-
-    const_iterator find(const key_type& key) const
-    {
-        return const_cast<self*>(this)->find(key);
-    }
-
-private:
-    // Define our own 'less' comparator so we can specialize without messing
-    // with std::less.
-    template <typename T>
-    struct less: public std::less<T> {};
-
-    // Specialize 'less' for an LLSortedVector::value_type involving
-    // std::type_info*. This is one of LLSortedVector's foremost use cases. We
-    // specialize 'less' rather than just defining a specific comparator
-    // because LLSortedVector should be usable for other key_types as well.
-    template <typename T>
-    struct less< std::pair<std::type_info*, T> >:
-        public std::binary_function<std::pair<std::type_info*, T>,
-                                    std::pair<std::type_info*, T>,
-                                    bool>
-    {
-        bool operator()(const std::pair<std::type_info*, T>& lhs,
-                        const std::pair<std::type_info*, T>& rhs) const
-        {
-            return lhs.first->before(*rhs.first);
-        }
-    };
-
-    // Same as above, but with const std::type_info*.
-    template <typename T>
-    struct less< std::pair<const std::type_info*, T> >:
-        public std::binary_function<std::pair<const std::type_info*, T>,
-                                    std::pair<const std::type_info*, T>,
-                                    bool>
-    {
-        bool operator()(const std::pair<const std::type_info*, T>& lhs,
-                        const std::pair<const std::type_info*, T>& rhs) const
-        {
-            return lhs.first->before(*rhs.first);
-        }
-    };
-
-    PairVector mVector;
-};
-
-#endif /* ! defined(LL_LLSORTEDVECTOR_H) */
diff --git a/indra/llcommon/llstack.h b/indra/llcommon/llstack.h
deleted file mode 100755
index 315de6ba2d..0000000000
--- a/indra/llcommon/llstack.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/** 
- * @file llstack.h
- * @brief LLStack template class
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLSTACK_H
-#define LL_LLSTACK_H
-
-#include "linked_lists.h"
-
-template <class DATA_TYPE> class LLStack
-{
-private:
-	LLLinkedList<DATA_TYPE> mStack;
-
-public:
-	LLStack()	{}
-	~LLStack()	{}
-
-	void push(DATA_TYPE *data)	{ mStack.addData(data); }
-	DATA_TYPE *pop()			{ DATA_TYPE *tempp = mStack.getFirstData(); mStack.removeCurrentData(); return tempp; }
-	void deleteAllData()		{ mStack.deleteAllData(); }
-	void removeAllNodes()		{ mStack.removeAllNodes(); }
-};
-
-#endif
-
diff --git a/indra/llcommon/llstacktrace.cpp b/indra/llcommon/llstacktrace.cpp
index ccd7ef91c2..e0e9056380 100755
--- a/indra/llcommon/llstacktrace.cpp
+++ b/indra/llcommon/llstacktrace.cpp
@@ -32,7 +32,7 @@
 #include <iostream>
 #include <sstream>
 
-#include "windows.h"
+#include "llwin32headerslean.h"
 #include "Dbghelp.h"
 
 typedef USHORT NTAPI RtlCaptureStackBackTrace_Function(
diff --git a/indra/llcommon/llstat.cpp b/indra/llcommon/llstat.cpp
deleted file mode 100755
index 3678c8e1c1..0000000000
--- a/indra/llcommon/llstat.cpp
+++ /dev/null
@@ -1,404 +0,0 @@
-/** 
- * @file llstat.cpp
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-
-#include "llstat.h"
-#include "lllivefile.h"
-#include "llerrorcontrol.h"
-#include "llframetimer.h"
-#include "timing.h"
-#include "llsd.h"
-#include "llsdserialize.h"
-#include "llstl.h"
-#include "u64.h"
-
-
-// statics
-//------------------------------------------------------------------------
-LLTimer LLStat::sTimer;
-LLFrameTimer LLStat::sFrameTimer;
-
-void LLStat::reset()
-{
-	mNumValues = 0;
-	mLastValue = 0.f;
-	delete[] mBins;
-	mBins      = new ValueEntry[mNumBins];
-	mCurBin = mNumBins-1;
-	mNextBin = 0;
-}
-
-LLStat::LLStat(std::string name, S32 num_bins, BOOL use_frame_timer)
-:	mUseFrameTimer(use_frame_timer),
-	mNumBins(num_bins),
-	mName(name),
-	mBins(NULL)
-{
-	llassert(mNumBins > 0);
-	mLastTime  = 0.f;
-
-	reset();
-
-	if (!mName.empty())
-	{
-		stat_map_t::iterator iter = getStatList().find(mName);
-		if (iter != getStatList().end())
-			llwarns << "LLStat with duplicate name: " << mName << llendl;
-		getStatList().insert(std::make_pair(mName, this));
-	}
-}
-
-LLStat::stat_map_t& LLStat::getStatList()
-{
-	static LLStat::stat_map_t stat_list;
-	return stat_list;
-}
-
-
-LLStat::~LLStat()
-{
-	delete[] mBins;
-
-	if (!mName.empty())
-	{
-		// handle multiple entries with the same name
-		stat_map_t::iterator iter = getStatList().find(mName);
-		while (iter != getStatList().end() && iter->second != this)
-			++iter;
-		getStatList().erase(iter);
-	}
-}
-
-void LLStat::start()
-{
-	if (mUseFrameTimer)
-	{
-		mBins[mNextBin].mBeginTime = sFrameTimer.getElapsedSeconds();
-	}
-	else
-	{
-		mBins[mNextBin].mBeginTime = sTimer.getElapsedTimeF64();
-	}
-}
-
-void LLStat::addValue(const F32 value)
-{
-	if (mNumValues < mNumBins)
-	{
-		mNumValues++;
-	}
-
-	// Increment the bin counters.
-	mCurBin++;
-	if (mCurBin >= mNumBins)
-	{
-		mCurBin = 0;
-	}
-	mNextBin++;
-	if (mNextBin >= mNumBins)
-	{
-		mNextBin = 0;
-	}
-
-	mBins[mCurBin].mValue = value;
-	if (mUseFrameTimer)
-	{
-		mBins[mCurBin].mTime = sFrameTimer.getElapsedSeconds();
-	}
-	else
-	{
-		mBins[mCurBin].mTime = sTimer.getElapsedTimeF64();
-	}
-	mBins[mCurBin].mDT = (F32)(mBins[mCurBin].mTime - mBins[mCurBin].mBeginTime);
-
-	//this value is used to prime the min/max calls
-	mLastTime = mBins[mCurBin].mTime;
-	mLastValue = value;
-
-	// Set the begin time for the next stat segment.
-	mBins[mNextBin].mBeginTime = mBins[mCurBin].mTime;
-	mBins[mNextBin].mTime = mBins[mCurBin].mTime;
-	mBins[mNextBin].mDT = 0.f;
-}
-
-
-F32 LLStat::getMax() const
-{
-	S32 i;
-	F32 current_max = mLastValue;
-	if (mNumBins == 0)
-	{
-		current_max = 0.f;
-	}
-	else
-	{
-		for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-		{
-			// Skip the bin we're currently filling.
-			if (i == mNextBin)
-			{
-				continue;
-			}
-			if (mBins[i].mValue > current_max)
-			{
-				current_max = mBins[i].mValue;
-			}
-		}
-	}
-	return current_max;
-}
-
-F32 LLStat::getMean() const
-{
-	S32 i;
-	F32 current_mean = 0.f;
-	S32 samples = 0;
-	for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		current_mean += mBins[i].mValue;
-		samples++;
-	}
-
-	// There will be a wrap error at 2^32. :)
-	if (samples != 0)
-	{
-		current_mean /= samples;
-	}
-	else
-	{
-		current_mean = 0.f;
-	}
-	return current_mean;
-}
-
-F32 LLStat::getMin() const
-{
-	S32 i;
-	F32 current_min = mLastValue;
-
-	if (mNumBins == 0)
-	{
-		current_min = 0.f;
-	}
-	else
-	{
-		for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-		{
-			// Skip the bin we're currently filling.
-			if (i == mNextBin)
-			{
-				continue;
-			}
-			if (mBins[i].mValue < current_min)
-			{
-				current_min = mBins[i].mValue;
-			}
-		}
-	}
-	return current_min;
-}
-
-F32 LLStat::getPrev(S32 age) const
-{
-	S32 bin;
-	bin = mCurBin - age;
-
-	while (bin < 0)
-	{
-		bin += mNumBins;
-	}
-
-	if (bin == mNextBin)
-	{
-		// Bogus for bin we're currently working on.
-		return 0.f;
-	}
-	return mBins[bin].mValue;
-}
-
-F32 LLStat::getPrevPerSec(S32 age) const
-{
-	S32 bin;
-	bin = mCurBin - age;
-
-	while (bin < 0)
-	{
-		bin += mNumBins;
-	}
-
-	if (bin == mNextBin)
-	{
-		// Bogus for bin we're currently working on.
-		return 0.f;
-	}
-	return mBins[bin].mValue / mBins[bin].mDT;
-}
-
-F32 LLStat::getCurrent() const
-{
-	return mBins[mCurBin].mValue;
-}
-
-F32 LLStat::getCurrentPerSec() const
-{
-	return mBins[mCurBin].mValue / mBins[mCurBin].mDT;
-}
-
-F32 LLStat::getMeanPerSec() const
-{
-	S32 i;
-	F32 value = 0.f;
-	F32 dt    = 0.f;
-
-	for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		value += mBins[i].mValue;
-		dt    += mBins[i].mDT;
-	}
-
-	if (dt > 0.f)
-	{
-		return value/dt;
-	}
-	else
-	{
-		return 0.f;
-	}
-}
-
-F32 LLStat::getMeanDuration() const
-{
-	F32 dur = 0.0f;
-	S32 count = 0;
-	for (S32 i=0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		dur += mBins[i].mDT;
-		count++;
-	}
-
-	if (count > 0)
-	{
-		dur /= F32(count);
-		return dur;
-	}
-	else
-	{
-		return 0.f;
-	}
-}
-
-F32 LLStat::getMaxPerSec() const
-{
-	F32 value;
-
-	if (mNextBin != 0)
-	{
-		value = mBins[0].mValue/mBins[0].mDT;
-	}
-	else if (mNumValues > 0)
-	{
-		value = mBins[1].mValue/mBins[1].mDT;
-	}
-	else
-	{
-		value = 0.f;
-	}
-
-	for (S32 i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		value = llmax(value, mBins[i].mValue/mBins[i].mDT);
-	}
-	return value;
-}
-
-F32 LLStat::getMinPerSec() const
-{
-	S32 i;
-	F32 value;
-	
-	if (mNextBin != 0)
-	{
-		value = mBins[0].mValue/mBins[0].mDT;
-	}
-	else if (mNumValues > 0)
-	{
-		value = mBins[1].mValue/mBins[0].mDT;
-	}
-	else
-	{
-		value = 0.f;
-	}
-
-	for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
-	{
-		// Skip the bin we're currently filling.
-		if (i == mNextBin)
-		{
-			continue;
-		}
-		value = llmin(value, mBins[i].mValue/mBins[i].mDT);
-	}
-	return value;
-}
-
-U32 LLStat::getNumValues() const
-{
-	return mNumValues;
-}
-
-S32 LLStat::getNumBins() const
-{
-	return mNumBins;
-}
-
-S32 LLStat::getNextBin() const
-{
-	return mNextBin;
-}
-
-F64 LLStat::getLastTime() const
-{
-	return mLastTime;
-}
diff --git a/indra/llcommon/llstat.h b/indra/llcommon/llstat.h
deleted file mode 100755
index 38377a010b..0000000000
--- a/indra/llcommon/llstat.h
+++ /dev/null
@@ -1,116 +0,0 @@
-/** 
- * @file llstat.h
- * @brief Runtime statistics accumulation.
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLSTAT_H
-#define LL_LLSTAT_H
-
-#include <map>
-
-#include "lltimer.h"
-#include "llframetimer.h"
-
-class	LLSD;
-
-// ----------------------------------------------------------------------------
-class LL_COMMON_API LLStat
-{
-private:
-	typedef std::multimap<std::string, LLStat*> stat_map_t;
-
-	static stat_map_t& getStatList();
-
-public:
-	LLStat(std::string name = std::string(), S32 num_bins = 32, BOOL use_frame_timer = FALSE);
-	~LLStat();
-
-	void start();	// Start the timer for the current "frame", otherwise uses the time tracked from
-					// the last addValue
-	void reset();
-	void addValue(const F32 value = 1.f); // Adds the current value being tracked, and tracks the DT.
-	void addValue(const S32 value) { addValue((F32)value); }
-	void addValue(const U32 value) { addValue((F32)value); }
-
-	S32 getNextBin() const;
-	
-	F32 getPrev(S32 age) const;				// Age is how many "addValues" previously - zero is current
-	F32 getPrevPerSec(S32 age) const;		// Age is how many "addValues" previously - zero is current
-	F32 getCurrent() const;
-	F32 getCurrentPerSec() const;
-	
-	F32 getMin() const;
-	F32 getMinPerSec() const;
-	F32 getMean() const;
-	F32 getMeanPerSec() const;
-	F32 getMeanDuration() const;
-	F32 getMax() const;
-	F32 getMaxPerSec() const;
-
-	U32 getNumValues() const;
-	S32 getNumBins() const;
-
-	F64 getLastTime() const;
-private:
-	BOOL mUseFrameTimer;
-	U32 mNumValues;
-	U32 mNumBins;
-	F32 mLastValue;
-	F64 mLastTime;
-
-	struct ValueEntry
-	{
-		ValueEntry()
-		:	mValue(0.f),
-			mBeginTime(0.0),
-			mTime(0.0),
-			mDT(0.f)
-		{}
-		F32 mValue;
-		F64 mBeginTime;
-		F64 mTime;
-		F32 mDT;
-	};
-	ValueEntry* mBins;
-	S32 mCurBin;
-	S32 mNextBin;
-	
-	std::string mName;
-
-	static LLTimer sTimer;
-	static LLFrameTimer sFrameTimer;
-	
-public:
-	static LLStat* getStat(const std::string& name)
-	{
-		// return the first stat that matches 'name'
-		stat_map_t::iterator iter = getStatList().find(name);
-		if (iter != getStatList().end())
-			return iter->second;
-		else
-			return NULL;
-	}
-};
-	
-#endif // LL_STAT_
diff --git a/indra/llcommon/llstatenums.h b/indra/llcommon/llstatenums.h
index 81c4085d16..ab9b6709e8 100755
--- a/indra/llcommon/llstatenums.h
+++ b/indra/llcommon/llstatenums.h
@@ -26,7 +26,7 @@
 #ifndef LL_LLSTATENUMS_H
 #define LL_LLSTATENUMS_H
 
-enum
+enum ESimStatID
 {
 	LL_SIM_STAT_TIME_DILATION         =  0,
 	LL_SIM_STAT_FPS                   =  1,
diff --git a/indra/llcommon/llstl.h b/indra/llcommon/llstl.h
index d3941e1bc9..424138dad1 100755
--- a/indra/llcommon/llstl.h
+++ b/indra/llcommon/llstl.h
@@ -31,6 +31,7 @@
 #include <algorithm>
 #include <map>
 #include <vector>
+#include <list>
 #include <set>
 #include <deque>
 #include <typeinfo>
diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index 22c8681983..66c416bfdd 100755
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -28,11 +28,10 @@
 
 #include "llstring.h"
 #include "llerror.h"
+#include "llfasttimer.h"
 
 #if LL_WINDOWS
-#define WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
+#include "llwin32headerslean.h"
 #include <winnls.h> // for WideCharToMultiByte
 #endif
 
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index f9702868c8..17893c1910 100755
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -31,8 +31,9 @@
 #include <cstdio>
 #include <locale>
 #include <iomanip>
+#include <algorithm>
 #include "llsd.h"
-#include "llfasttimer.h"
+#include "llformat.h"
 
 #if LL_LINUX || LL_SOLARIS
 #include <wctype.h>
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index 57a6de9060..95bbcbc816 100755
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -42,6 +42,7 @@
 #include "llprocessor.h"
 #include "llerrorcontrol.h"
 #include "llevents.h"
+#include "llformat.h"
 #include "lltimer.h"
 #include "llsdserialize.h"
 #include "llsdutil.h"
@@ -58,9 +59,7 @@
 using namespace llsd;
 
 #if LL_WINDOWS
-#	define WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
+#	include "llwin32headerslean.h"
 #   include <psapi.h>               // GetPerformanceInfo() et al.
 #elif LL_DARWIN
 #	include <errno.h>
diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index 1d56a52c32..118568d5ef 100755
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -29,8 +29,11 @@
 #include "apr_portable.h"
 
 #include "llthread.h"
+#include "llmutex.h"
 
 #include "lltimer.h"
+#include "lltrace.h"
+#include "lltracethreadrecorder.h"
 
 #if LL_LINUX || LL_SOLARIS
 #include <sched.h>
@@ -56,12 +59,17 @@
 // 
 //----------------------------------------------------------------------------
 
-#if !LL_DARWIN
-U32 ll_thread_local sThreadID = 0;
+#if LL_DARWIN
+// statically allocated thread local storage not supported in Darwin executable formats
+#elif LL_WINDOWS
+U32 __declspec(thread) sThreadID = 0;
+#elif LL_LINUX
+U32 __thread sThreadID = 0;
 #endif 
 
 U32 LLThread::sIDIter = 0;
 
+
 LL_COMMON_API void assert_main_thread()
 {
 	static U32 s_thread_id = LLThread::currentID();
@@ -85,6 +93,8 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap
 {
 	LLThread *threadp = (LLThread *)datap;
 
+	LLTrace::ThreadRecorder* thread_recorder = new LLTrace::SlaveThreadRecorder(LLTrace::getUIThreadRecorder());
+
 #if !LL_DARWIN
 	sThreadID = threadp->mID;
 #endif
@@ -97,16 +107,18 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap
 	// We're done with the run function, this thread is done executing now.
 	threadp->mStatus = STOPPED;
 
+	delete thread_recorder;
+
 	return NULL;
 }
 
-
 LLThread::LLThread(const std::string& name, apr_pool_t *poolp) :
 	mPaused(FALSE),
 	mName(name),
 	mAPRThreadp(NULL),
 	mStatus(STOPPED)
 {
+
 	mID = ++sIDIter;
 
 	// Thread creation probably CAN be paranoid about APR being initialized, if necessary
@@ -152,7 +164,7 @@ void LLThread::shutdown()
 			//llinfos << "LLThread::~LLThread() Killing thread " << mName << " Status: " << mStatus << llendl;
 			// Now wait a bit for the thread to exit
 			// It's unclear whether I should even bother doing this - this destructor
-			// should netver get called unless we're already stopped, really...
+			// should never get called unless we're already stopped, really...
 			S32 counter = 0;
 			const S32 MAX_WAIT = 600;
 			while (counter < MAX_WAIT)
@@ -282,7 +294,13 @@ void LLThread::setQuitting()
 // static
 U32 LLThread::currentID()
 {
+#if LL_DARWIN
+	// statically allocated thread local storage not supported in Darwin executable formats
 	return (U32)apr_os_thread_current();
+#else
+	return sThreadID;
+#endif
+
 }
 
 // static
@@ -315,155 +333,6 @@ void LLThread::wakeLocked()
 
 //============================================================================
 
-LLMutex::LLMutex(apr_pool_t *poolp) :
-	mAPRMutexp(NULL), mCount(0), mLockingThread(NO_THREAD)
-{
-	//if (poolp)
-	//{
-	//	mIsLocalPool = FALSE;
-	//	mAPRPoolp = poolp;
-	//}
-	//else
-	{
-		mIsLocalPool = TRUE;
-		apr_pool_create(&mAPRPoolp, NULL); // Create a subpool for this thread
-	}
-	apr_thread_mutex_create(&mAPRMutexp, APR_THREAD_MUTEX_UNNESTED, mAPRPoolp);
-}
-
-
-LLMutex::~LLMutex()
-{
-#if MUTEX_DEBUG
-	//bad assertion, the subclass LLSignal might be "locked", and that's OK
-	//llassert_always(!isLocked()); // better not be locked!
-#endif
-	apr_thread_mutex_destroy(mAPRMutexp);
-	mAPRMutexp = NULL;
-	if (mIsLocalPool)
-	{
-		apr_pool_destroy(mAPRPoolp);
-	}
-}
-
-
-void LLMutex::lock()
-{
-	if(isSelfLocked())
-	{ //redundant lock
-		mCount++;
-		return;
-	}
-	
-	apr_thread_mutex_lock(mAPRMutexp);
-	
-#if MUTEX_DEBUG
-	// Have to have the lock before we can access the debug info
-	U32 id = LLThread::currentID();
-	if (mIsLocked[id] != FALSE)
-		llerrs << "Already locked in Thread: " << id << llendl;
-	mIsLocked[id] = TRUE;
-#endif
-
-#if LL_DARWIN
-	mLockingThread = LLThread::currentID();
-#else
-	mLockingThread = sThreadID;
-#endif
-}
-
-void LLMutex::unlock()
-{
-	if (mCount > 0)
-	{ //not the root unlock
-		mCount--;
-		return;
-	}
-	
-#if MUTEX_DEBUG
-	// Access the debug info while we have the lock
-	U32 id = LLThread::currentID();
-	if (mIsLocked[id] != TRUE)
-		llerrs << "Not locked in Thread: " << id << llendl;	
-	mIsLocked[id] = FALSE;
-#endif
-
-	mLockingThread = NO_THREAD;
-	apr_thread_mutex_unlock(mAPRMutexp);
-}
-
-bool LLMutex::isLocked()
-{
-	apr_status_t status = apr_thread_mutex_trylock(mAPRMutexp);
-	if (APR_STATUS_IS_EBUSY(status))
-	{
-		return true;
-	}
-	else
-	{
-		apr_thread_mutex_unlock(mAPRMutexp);
-		return false;
-	}
-}
-
-bool LLMutex::isSelfLocked()
-{
-#if LL_DARWIN
-	return mLockingThread == LLThread::currentID();
-#else
-	return mLockingThread == sThreadID;
-#endif
-}
-
-U32 LLMutex::lockingThread() const
-{
-	return mLockingThread;
-}
-
-//============================================================================
-
-LLCondition::LLCondition(apr_pool_t *poolp) :
-	LLMutex(poolp)
-{
-	// base class (LLMutex) has already ensured that mAPRPoolp is set up.
-
-	apr_thread_cond_create(&mAPRCondp, mAPRPoolp);
-}
-
-
-LLCondition::~LLCondition()
-{
-	apr_thread_cond_destroy(mAPRCondp);
-	mAPRCondp = NULL;
-}
-
-
-void LLCondition::wait()
-{
-	if (!isLocked())
-	{ //mAPRMutexp MUST be locked before calling apr_thread_cond_wait
-		apr_thread_mutex_lock(mAPRMutexp);
-#if MUTEX_DEBUG
-		// avoid asserts on destruction in non-release builds
-		U32 id = LLThread::currentID();
-		mIsLocked[id] = TRUE;
-#endif
-	}
-	apr_thread_cond_wait(mAPRCondp, mAPRMutexp);
-}
-
-void LLCondition::signal()
-{
-	apr_thread_cond_signal(mAPRCondp);
-}
-
-void LLCondition::broadcast()
-{
-	apr_thread_cond_broadcast(mAPRCondp);
-}
-
-//============================================================================
-
 //----------------------------------------------------------------------------
 
 //static
@@ -514,7 +383,6 @@ LLThreadSafeRefCount::~LLThreadSafeRefCount()
 	}
 }
 
-
 //============================================================================
 
 LLResponder::~LLResponder()
diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h
index 0fb89c5613..4a84a14a65 100755
--- a/indra/llcommon/llthread.h
+++ b/indra/llcommon/llthread.h
@@ -31,20 +31,14 @@
 #include "llapr.h"
 #include "apr_thread_cond.h"
 #include "boost/intrusive_ptr.hpp"
+#include "llmutex.h"
 
-class LLThread;
-class LLMutex;
-class LLCondition;
-
-#if LL_WINDOWS
-#define ll_thread_local __declspec(thread)
-#else
-#define ll_thread_local __thread
-#endif
+LL_COMMON_API void assert_main_thread();
 
 class LL_COMMON_API LLThread
 {
 private:
+	friend class LLMutex;
 	static U32 sIDIter;
 
 public:
@@ -98,15 +92,15 @@ private:
 	BOOL				mPaused;
 	
 	// static function passed to APR thread creation routine
-	static void *APR_THREAD_FUNC staticRun(apr_thread_t *apr_threadp, void *datap);
+	static void *APR_THREAD_FUNC staticRun(struct apr_thread_t *apr_threadp, void *datap);
 
 protected:
 	std::string			mName;
-	LLCondition*		mRunCondition;
+	class LLCondition*	mRunCondition;
 	LLMutex*			mDataLock;
 
-	apr_thread_t		*mAPRThreadp;
-	apr_pool_t			*mAPRPoolp;
+	apr_thread_t*		mAPRThreadp;
+	apr_pool_t*			mAPRPoolp;
 	BOOL				mIsLocalPool;
 	EThreadStatus		mStatus;
 	U32					mID;
@@ -114,7 +108,7 @@ protected:
 	//a local apr_pool for APRFile operations in this thread. If it exists, LLAPRFile::sAPRFilePoolp should not be used.
 	//Note: this pool is used by APRFile ONLY, do NOT use it for any other purposes.
 	//      otherwise it will cause severe memory leaking!!! --bao
-	LLVolatileAPRPool  *mLocalAPRFilePoolp ; 
+	LLVolatileAPRPool*	mLocalAPRFilePoolp ; 
 
 	void setQuitting();
 	
@@ -140,75 +134,6 @@ protected:
 	// mDataLock->unlock();
 };
 
-//============================================================================
-
-#define MUTEX_DEBUG (LL_DEBUG || LL_RELEASE_WITH_DEBUG_INFO)
-
-class LL_COMMON_API LLMutex
-{
-public:
-	typedef enum
-	{
-		NO_THREAD = 0xFFFFFFFF
-	} e_locking_thread;
-
-	LLMutex(apr_pool_t *apr_poolp); // NULL pool constructs a new pool for the mutex
-	virtual ~LLMutex();
-	
-	void lock();		// blocks
-	void unlock();
-	bool isLocked(); 	// non-blocking, but does do a lock/unlock so not free
-	bool isSelfLocked(); //return true if locked in a same thread
-	U32 lockingThread() const; //get ID of locking thread
-	
-protected:
-	apr_thread_mutex_t *mAPRMutexp;
-	mutable U32			mCount;
-	mutable U32			mLockingThread;
-	
-	apr_pool_t			*mAPRPoolp;
-	BOOL				mIsLocalPool;
-	
-#if MUTEX_DEBUG
-	std::map<U32, BOOL> mIsLocked;
-#endif
-};
-
-// Actually a condition/mutex pair (since each condition needs to be associated with a mutex).
-class LL_COMMON_API LLCondition : public LLMutex
-{
-public:
-	LLCondition(apr_pool_t *apr_poolp); // Defaults to global pool, could use the thread pool as well.
-	~LLCondition();
-	
-	void wait();		// blocks
-	void signal();
-	void broadcast();
-	
-protected:
-	apr_thread_cond_t *mAPRCondp;
-};
-
-class LLMutexLock
-{
-public:
-	LLMutexLock(LLMutex* mutex)
-	{
-		mMutex = mutex;
-		
-		if(mMutex)
-			mMutex->lock();
-	}
-	~LLMutexLock()
-	{
-		if(mMutex)
-			mMutex->unlock();
-	}
-private:
-	LLMutex* mMutex;
-};
-
-//============================================================================
 
 void LLThread::lockData()
 {
diff --git a/indra/llcommon/llthreadlocalstorage.cpp b/indra/llcommon/llthreadlocalstorage.cpp
new file mode 100644
index 0000000000..32d94331a6
--- /dev/null
+++ b/indra/llcommon/llthreadlocalstorage.cpp
@@ -0,0 +1,117 @@
+/** 
+ * @file llthreadlocalstorage.cpp
+ * @author Richard
+ * @date 2013-1-11
+ * @brief implementation of thread local storage utility classes
+ *
+ * $LicenseInfo:firstyear=2013&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llthreadlocalstorage.h"
+#include "llapr.h"
+
+//
+//LLThreadLocalPointerBase
+//
+bool LLThreadLocalPointerBase::sInitialized = false;
+
+void LLThreadLocalPointerBase::set( void* value )
+{
+	llassert(sInitialized && mThreadKey);
+
+	apr_status_t result = apr_threadkey_private_set((void*)value, mThreadKey);
+	if (result != APR_SUCCESS)
+	{
+		ll_apr_warn_status(result);
+		llerrs << "Failed to set thread local data" << llendl;
+	}
+}
+
+void* LLThreadLocalPointerBase::get() const
+{
+	// llassert(sInitialized);
+	void* ptr;
+	apr_status_t result =
+		apr_threadkey_private_get(&ptr, mThreadKey);
+	if (result != APR_SUCCESS)
+	{
+		ll_apr_warn_status(result);
+		llerrs << "Failed to get thread local data" << llendl;
+	}
+	return ptr;
+}
+
+
+void LLThreadLocalPointerBase::initStorage( )
+{
+	apr_status_t result = apr_threadkey_private_create(&mThreadKey, NULL, gAPRPoolp);
+	if (result != APR_SUCCESS)
+	{
+		ll_apr_warn_status(result);
+		llerrs << "Failed to allocate thread local data" << llendl;
+	}
+}
+
+void LLThreadLocalPointerBase::destroyStorage()
+{
+	if (sInitialized)
+	{
+		if (mThreadKey)
+		{
+			apr_status_t result = apr_threadkey_private_delete(mThreadKey);
+			if (result != APR_SUCCESS)
+			{
+				ll_apr_warn_status(result);
+				llerrs << "Failed to delete thread local data" << llendl;
+			}
+		}
+	}
+}
+
+void LLThreadLocalPointerBase::initAllThreadLocalStorage()
+{
+	if (!sInitialized)
+	{
+		for (LLInstanceTracker<LLThreadLocalPointerBase>::instance_iter it = beginInstances(), end_it = endInstances();
+			it != end_it;
+			++it)
+		{
+			(*it).initStorage();
+		}
+		sInitialized = true;
+	}
+}
+
+void LLThreadLocalPointerBase::destroyAllThreadLocalStorage()
+{
+	if (sInitialized)
+	{
+		//for (LLInstanceTracker<LLThreadLocalPointerBase>::instance_iter it = beginInstances(), end_it = endInstances();
+		//	it != end_it;
+		//	++it)
+		//{
+		//	(*it).destroyStorage();
+		//}
+		sInitialized = false;
+	}
+}
diff --git a/indra/llcommon/llthreadlocalstorage.h b/indra/llcommon/llthreadlocalstorage.h
new file mode 100644
index 0000000000..a15f9185b1
--- /dev/null
+++ b/indra/llcommon/llthreadlocalstorage.h
@@ -0,0 +1,357 @@
+/** 
+ * @file llthreadlocalstorage.h
+ * @author Richard
+ * @brief Class wrappers for thread local storage
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTHREADLOCALSTORAGE_H
+#define LL_LLTHREADLOCALSTORAGE_H
+
+#include "llinstancetracker.h"
+
+class LLThreadLocalPointerBase : public LLInstanceTracker<LLThreadLocalPointerBase>
+{
+public:
+	LLThreadLocalPointerBase()
+	:	mThreadKey(NULL)
+	{
+		if (sInitialized)
+		{
+			initStorage();
+		}
+	}
+
+	LLThreadLocalPointerBase( const LLThreadLocalPointerBase& other)
+		:	mThreadKey(NULL)
+	{
+		if (sInitialized)
+		{
+			initStorage();
+		}
+	}
+
+	~LLThreadLocalPointerBase()
+	{
+		destroyStorage();
+	}
+
+	static void initAllThreadLocalStorage();
+	static void destroyAllThreadLocalStorage();
+
+protected:
+	void set(void* value);
+
+	void* get() const;
+
+	void initStorage();
+	void destroyStorage();
+
+protected:
+	struct apr_threadkey_t*	mThreadKey;
+	static bool				sInitialized;
+};
+
+template <typename T>
+class LLThreadLocalPointer : public LLThreadLocalPointerBase
+{
+public:
+
+	LLThreadLocalPointer()
+	{}
+
+	explicit LLThreadLocalPointer(T* value)
+	{
+		set(value);
+	}
+
+
+	LLThreadLocalPointer(const LLThreadLocalPointer<T>& other)
+	:	LLThreadLocalPointerBase(other)
+	{
+		set(other.get());		
+	}
+
+	LL_FORCE_INLINE T* get() const
+	{
+		return (T*)LLThreadLocalPointerBase::get();
+	}
+
+	T* operator -> () const
+	{
+		return (T*)get();
+	}
+
+	T& operator*() const
+	{
+		return *(T*)get();
+	}
+
+	LLThreadLocalPointer<T>& operator = (T* value)
+	{
+		set((void*)value);
+		return *this;
+	}
+
+	bool operator ==(const T* other) const
+	{
+		if (!sInitialized) return false;
+		return get() == other;
+	}
+
+	bool isNull() const { return !sInitialized || get() == NULL; }
+
+	bool notNull() const { return sInitialized && get() != NULL; }
+};
+
+template<typename DERIVED_TYPE>
+class LLThreadLocalSingleton
+{
+	typedef enum e_init_state
+	{
+		UNINITIALIZED = 0,
+		CONSTRUCTING,
+		INITIALIZING,
+		INITIALIZED,
+		DELETED
+	} EInitState;
+
+public:
+	LLThreadLocalSingleton()
+	{}
+	
+	virtual ~LLThreadLocalSingleton()
+	{
+#if LL_DARWIN
+        pthread_setspecific(sInstanceKey, NULL);
+#else
+        sInstance = NULL;
+#endif
+		setInitState(DELETED);
+	}
+
+	static void deleteSingleton()
+	{
+		delete getIfExists();
+	}
+
+	static DERIVED_TYPE* getInstance()
+	{
+        EInitState init_state = getInitState();
+		if (init_state == CONSTRUCTING)
+		{
+			llerrs << "Tried to access singleton " << typeid(DERIVED_TYPE).name() << " from singleton constructor!" << llendl;
+		}
+
+		if (init_state == DELETED)
+		{
+			llwarns << "Trying to access deleted singleton " << typeid(DERIVED_TYPE).name() << " creating new instance" << llendl;
+		}
+
+#if LL_DARWIN
+        createTLSInstance();
+#endif
+		if (!getIfExists())
+		{
+			setInitState(CONSTRUCTING);
+            DERIVED_TYPE* instancep = new DERIVED_TYPE();
+#if LL_DARWIN
+            S32 result = pthread_setspecific(sInstanceKey, (void*)instancep);
+            if (result != 0)
+            {
+                llerrs << "Could not set thread local storage" << llendl;
+            }
+#else
+			sInstance = instancep;
+#endif
+			setInitState(INITIALIZING);
+			instancep->initSingleton();
+			setInitState(INITIALIZED);
+		}
+
+        return getIfExists();
+	}
+
+	static DERIVED_TYPE* getIfExists()
+	{
+#if LL_DARWIN
+        return (DERIVED_TYPE*)pthread_getspecific(sInstanceKey);
+#else
+		return sInstance;
+#endif
+	}
+
+	// Reference version of getInstance()
+	// Preferred over getInstance() as it disallows checking for NULL
+	static DERIVED_TYPE& instance()
+	{
+		return *getInstance();
+	}
+
+	// Has this singleton been created uet?
+	// Use this to avoid accessing singletons before the can safely be constructed
+	static bool instanceExists()
+	{
+		return getInitState() == INITIALIZED;
+	}
+
+	// Has this singleton already been deleted?
+	// Use this to avoid accessing singletons from a static object's destructor
+	static bool destroyed()
+	{
+		return getInitState() == DELETED;
+	}
+private:
+#if LL_DARWIN
+    static void createTLSInitState()
+    {
+        static S32 key_created = pthread_key_create(&sInitStateKey, NULL);
+        if (key_created != 0)
+        {
+            llerrs << "Could not create thread local storage" << llendl;
+        }
+    }
+    
+    static void createTLSInstance()
+    {
+        static S32 key_created = pthread_key_create(&sInstanceKey, NULL);
+        if (key_created != 0)
+        {
+            llerrs << "Could not create thread local storage" << llendl;
+        }
+    }
+#endif
+    static EInitState getInitState()
+    {
+#if LL_DARWIN
+        createTLSInitState();
+        return (EInitState)(int)pthread_getspecific(sInitStateKey);
+#else
+        return sInitState;
+#endif
+    }
+    
+    static void setInitState(EInitState state)
+    {
+#if LL_DARWIN
+        createTLSInitState();
+        pthread_setspecific(sInitStateKey, (void*)state);
+#else
+        sInitState = state;
+#endif
+    }
+	LLThreadLocalSingleton(const LLThreadLocalSingleton& other);
+	virtual void initSingleton() {}
+
+#ifdef LL_WINDOWS
+	static __declspec(thread) DERIVED_TYPE* sInstance;
+	static __declspec(thread) EInitState sInitState;
+#elif LL_LINUX
+	static __thread DERIVED_TYPE* sInstance;
+	static __thread EInitState sInitState;
+#elif LL_DARWIN
+    static pthread_key_t sInstanceKey;
+    static pthread_key_t sInitStateKey;
+#endif
+};
+
+#if LL_WINDOWS
+template<typename DERIVED_TYPE>
+__declspec(thread) DERIVED_TYPE* LLThreadLocalSingleton<DERIVED_TYPE>::sInstance = NULL;
+
+template<typename DERIVED_TYPE>
+__declspec(thread) typename LLThreadLocalSingleton<DERIVED_TYPE>::EInitState LLThreadLocalSingleton<DERIVED_TYPE>::sInitState = LLThreadLocalSingleton<DERIVED_TYPE>::UNINITIALIZED;
+#elif LL_LINUX
+template<typename DERIVED_TYPE>
+__thread DERIVED_TYPE* LLThreadLocalSingleton<DERIVED_TYPE>::sInstance = NULL;
+
+template<typename DERIVED_TYPE>
+__thread typename LLThreadLocalSingleton<DERIVED_TYPE>::EInitState LLThreadLocalSingleton<DERIVED_TYPE>::sInitState = LLThreadLocalSingleton<DERIVED_TYPE>::UNINITIALIZED;
+#elif LL_DARWIN
+template<typename DERIVED_TYPE>
+pthread_key_t LLThreadLocalSingleton<DERIVED_TYPE>::sInstanceKey;
+
+template<typename DERIVED_TYPE>
+pthread_key_t LLThreadLocalSingleton<DERIVED_TYPE>::sInitStateKey;
+
+#endif
+
+template<typename DERIVED_TYPE>
+class LLThreadLocalSingletonPointer
+{
+public:
+	LL_FORCE_INLINE static DERIVED_TYPE* getInstance()
+	{
+#if LL_DARWIN
+        createTLSKey();
+        return (DERIVED_TYPE*)pthread_getspecific(sInstanceKey);
+#else
+		return sInstance;
+#endif
+	}
+
+	static void setInstance(DERIVED_TYPE* instance)
+	{
+#if LL_DARWIN
+        createTLSKey();
+        pthread_setspecific(sInstanceKey, (void*)instance);
+#else
+		sInstance = instance;
+#endif
+	}
+
+private:
+
+#if LL_WINDOWS
+	static __declspec(thread) DERIVED_TYPE* sInstance;
+#elif LL_LINUX
+	static __thread DERIVED_TYPE* sInstance;
+#elif LL_DARWIN
+    static void TLSError()
+    {
+        llerrs << "Could not create thread local storage" << llendl;
+    }
+    static void createTLSKey()
+    {
+        static S32 key_created = pthread_key_create(&sInstanceKey, NULL);
+        if (key_created != 0)
+        {
+            llerrs << "Could not create thread local storage" << llendl;
+        }
+    }
+    static pthread_key_t sInstanceKey;
+#endif
+};
+
+#if LL_WINDOWS
+template<typename DERIVED_TYPE>
+__declspec(thread) DERIVED_TYPE* LLThreadLocalSingletonPointer<DERIVED_TYPE>::sInstance = NULL;
+#elif LL_LINUX
+template<typename DERIVED_TYPE>
+__thread DERIVED_TYPE* LLThreadLocalSingletonPointer<DERIVED_TYPE>::sInstance = NULL;
+#elif LL_DARWIN
+template<typename DERIVED_TYPE>
+pthread_key_t LLThreadLocalSingletonPointer<DERIVED_TYPE>::sInstanceKey;
+#endif
+
+#endif // LL_LLTHREADLOCALSTORAGE_H
diff --git a/indra/llcommon/lltimer.cpp b/indra/llcommon/lltimer.cpp
index 9ebc6de7f4..838155d54d 100755
--- a/indra/llcommon/lltimer.cpp
+++ b/indra/llcommon/lltimer.cpp
@@ -31,11 +31,9 @@
 #include "u64.h"
 
 #if LL_WINDOWS
-#	define WIN32_LEAN_AND_MEAN
-#	include <winsock2.h>
-#	include <windows.h>
+#	include "llwin32headerslean.h"
 #elif LL_LINUX || LL_SOLARIS || LL_DARWIN
-#       include <errno.h>
+#   include <errno.h>
 #	include <sys/time.h>
 #else 
 #	error "architecture not supported"
@@ -287,14 +285,14 @@ LLTimer::~LLTimer()
 }
 
 // static
-U64 LLTimer::getTotalTime()
+LLUnitImplicit<LLUnits::Microseconds, U64> LLTimer::getTotalTime()
 {
 	// simply call into the implementation function.
 	return totalTime();
 }	
 
 // static
-F64 LLTimer::getTotalSeconds()
+LLUnitImplicit<LLUnits::Seconds, F64> LLTimer::getTotalSeconds()
 {
 	return U64_to_F64(getTotalTime()) * USEC_TO_SEC_F64;
 }
@@ -343,23 +341,23 @@ U64 getElapsedTimeAndUpdate(U64& lastClockCount)
 }
 
 
-F64 LLTimer::getElapsedTimeF64() const
+LLUnitImplicit<LLUnits::Seconds, F64> LLTimer::getElapsedTimeF64() const
 {
 	U64 last = mLastClockCount;
 	return (F64)getElapsedTimeAndUpdate(last) * gClockFrequencyInv;
 }
 
-F32 LLTimer::getElapsedTimeF32() const
+LLUnitImplicit<LLUnits::Seconds, F32> LLTimer::getElapsedTimeF32() const
 {
 	return (F32)getElapsedTimeF64();
 }
 
-F64 LLTimer::getElapsedTimeAndResetF64()
+LLUnitImplicit<LLUnits::Seconds, F64> LLTimer::getElapsedTimeAndResetF64()
 {
 	return (F64)getElapsedTimeAndUpdate(mLastClockCount) * gClockFrequencyInv;
 }
 
-F32 LLTimer::getElapsedTimeAndResetF32()
+LLUnitImplicit<LLUnits::Seconds, F32> LLTimer::getElapsedTimeAndResetF32()
 {
 	return (F32)getElapsedTimeAndResetF64();
 }
@@ -372,7 +370,7 @@ void  LLTimer::setTimerExpirySec(F32 expiration)
 		+ (U64)((F32)(expiration * gClockFrequency));
 }
 
-F32 LLTimer::getRemainingTimeF32() const
+LLUnitImplicit<LLUnits::Seconds, F32> LLTimer::getRemainingTimeF32() const
 {
 	U64 cur_ticks = get_clock_count();
 	if (cur_ticks > mExpirationTicks)
diff --git a/indra/llcommon/lltimer.h b/indra/llcommon/lltimer.h
index 513de0605d..0ba87d1e15 100755
--- a/indra/llcommon/lltimer.h
+++ b/indra/llcommon/lltimer.h
@@ -37,6 +37,7 @@
 #include <string>
 #include <list>
 // units conversions
+#include "llunit.h"
 #ifndef USEC_PER_SEC
     const U32	USEC_PER_SEC	= 1000000;
 #endif
@@ -55,7 +56,7 @@ public:
 protected:	
 	U64 mLastClockCount;
 	U64 mExpirationTicks;
-	BOOL mStarted;
+	bool mStarted;
 
 public:
 	LLTimer();
@@ -66,16 +67,16 @@ public:
 
 	// Return a high precision number of seconds since the start of
 	// this application instance.
-	static F64 getElapsedSeconds()
+	static LLUnitImplicit<LLUnits::Seconds, F64> getElapsedSeconds()
 	{
 		return sTimer->getElapsedTimeF64();
 	}
 
 	// Return a high precision usec since epoch
-	static U64 getTotalTime();
+	static LLUnitImplicit<LLUnits::Microseconds, U64> getTotalTime();
 
 	// Return a high precision seconds since epoch
-	static F64 getTotalSeconds();
+	static LLUnitImplicit<LLUnits::Seconds, F64> getTotalSeconds();
 
 
 	// MANIPULATORS
@@ -86,18 +87,18 @@ public:
 	void setTimerExpirySec(F32 expiration);
 	BOOL checkExpirationAndReset(F32 expiration);
 	BOOL hasExpired() const;
-	F32 getElapsedTimeAndResetF32();	// Returns elapsed time in seconds with reset
-	F64 getElapsedTimeAndResetF64();
+	LLUnitImplicit<LLUnits::Seconds, F32> getElapsedTimeAndResetF32();	// Returns elapsed time in seconds with reset
+	LLUnitImplicit<LLUnits::Seconds, F64> getElapsedTimeAndResetF64();
 
-	F32 getRemainingTimeF32() const;
+	LLUnitImplicit<LLUnits::Seconds, F32> getRemainingTimeF32() const;
 
 	static BOOL knownBadTimer();
 
 	// ACCESSORS
-	F32 getElapsedTimeF32() const;			// Returns elapsed time in seconds
-	F64 getElapsedTimeF64() const;			// Returns elapsed time in seconds
+	LLUnitImplicit<LLUnits::Seconds, F32> getElapsedTimeF32() const;			// Returns elapsed time in seconds
+	LLUnitImplicit<LLUnits::Seconds, F64> getElapsedTimeF64() const;			// Returns elapsed time in seconds
 
-	BOOL getStarted() const { return mStarted; }
+	bool getStarted() const { return mStarted; }
 
 
 	static U64 getCurrentClockCount();		// Returns the raw clockticks
diff --git a/indra/llcommon/lltrace.cpp b/indra/llcommon/lltrace.cpp
new file mode 100644
index 0000000000..c831a1548d
--- /dev/null
+++ b/indra/llcommon/lltrace.cpp
@@ -0,0 +1,115 @@
+/** 
+ * @file lltrace.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltrace.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
+#include "llfasttimer.h"
+
+static S32 sInitializationCount = 0;
+
+namespace LLTrace
+{
+
+static MasterThreadRecorder* gUIThreadRecorder = NULL;
+
+void init()
+{
+	if (sInitializationCount++ == 0)
+	{
+		gUIThreadRecorder = new MasterThreadRecorder();
+	}
+}
+
+bool isInitialized()
+{
+	return sInitializationCount > 0; 
+}
+
+void cleanup()
+{
+	if (--sInitializationCount == 0)
+	{
+		delete gUIThreadRecorder;
+		gUIThreadRecorder = NULL;
+	}
+}
+
+MasterThreadRecorder& getUIThreadRecorder()
+{
+	llassert(gUIThreadRecorder != NULL);
+	return *gUIThreadRecorder;
+}
+
+LLThreadLocalPointer<ThreadRecorder>& get_thread_recorder_ptr()
+{
+	static LLThreadLocalPointer<ThreadRecorder> s_thread_recorder;
+	return s_thread_recorder;
+}
+
+const LLThreadLocalPointer<ThreadRecorder>& get_thread_recorder()
+{
+	return get_thread_recorder_ptr();
+}
+
+void set_thread_recorder(ThreadRecorder* recorder)
+{
+	get_thread_recorder_ptr() = recorder;
+}
+
+
+TimeBlockTreeNode::TimeBlockTreeNode() 
+:	mBlock(NULL),
+	mParent(NULL),
+	mNeedsSorting(false)
+{}
+
+void TimeBlockTreeNode::setParent( TimeBlock* parent )
+{
+	llassert_always(parent != mBlock);
+	llassert_always(parent != NULL);
+
+	TimeBlockTreeNode* parent_tree_node = get_thread_recorder()->getTimeBlockTreeNode(parent->getIndex());
+	if (!parent_tree_node) return;
+
+	if (mParent)
+	{
+		std::vector<TimeBlock*>& children = mParent->getChildren();
+		std::vector<TimeBlock*>::iterator found_it = std::find(children.begin(), children.end(), mBlock);
+		if (found_it != children.end())
+		{
+			children.erase(found_it);
+		}
+	}
+
+	mParent = parent;
+	mBlock->getPrimaryAccumulator()->mParent = parent;
+	parent_tree_node->mChildren.push_back(mBlock);
+	parent_tree_node->mNeedsSorting = true;
+}
+
+}
diff --git a/indra/llcommon/lltrace.h b/indra/llcommon/lltrace.h
new file mode 100644
index 0000000000..343e1b16e8
--- /dev/null
+++ b/indra/llcommon/lltrace.h
@@ -0,0 +1,1083 @@
+/** 
+ * @file lltrace.h
+ * @brief Runtime statistics accumulation.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACE_H
+#define LL_LLTRACE_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llmemory.h"
+#include "llrefcount.h"
+#include "llunit.h"
+#include "llthreadlocalstorage.h"
+#include "lltimer.h"
+
+#include <list>
+
+#define LL_RECORD_BLOCK_TIME(block_timer) LLTrace::TimeBlock::Recorder LL_GLUE_TOKENS(block_time_recorder, __COUNTER__)(block_timer);
+
+namespace LLTrace
+{
+class Recording;
+
+typedef LLUnit<LLUnits::Bytes, F64>			Bytes;
+typedef LLUnit<LLUnits::Kibibytes, F64>		Kibibytes;
+typedef LLUnit<LLUnits::Mibibytes, F64>		Mibibytes;
+typedef LLUnit<LLUnits::Gibibytes, F64>		Gibibytes;
+typedef LLUnit<LLUnits::Bits, F64>			Bits;
+typedef LLUnit<LLUnits::Kibibits, F64>		Kibibits;
+typedef LLUnit<LLUnits::Mibibits, F64>		Mibibits;
+typedef LLUnit<LLUnits::Gibibits, F64>		Gibibits;
+
+typedef LLUnit<LLUnits::Seconds, F64>		Seconds;
+typedef LLUnit<LLUnits::Milliseconds, F64>	Milliseconds;
+typedef LLUnit<LLUnits::Minutes, F64>		Minutes;
+typedef LLUnit<LLUnits::Hours, F64>			Hours;
+typedef LLUnit<LLUnits::Milliseconds, F64>	Milliseconds;
+typedef LLUnit<LLUnits::Microseconds, F64>	Microseconds;
+typedef LLUnit<LLUnits::Nanoseconds, F64>	Nanoseconds;
+
+typedef LLUnit<LLUnits::Meters, F64>		Meters;
+typedef LLUnit<LLUnits::Kilometers, F64>	Kilometers;
+typedef LLUnit<LLUnits::Centimeters, F64>	Centimeters;
+typedef LLUnit<LLUnits::Millimeters, F64>	Millimeters;
+
+void init();
+void cleanup();
+bool isInitialized();
+
+const LLThreadLocalPointer<class ThreadRecorder>& get_thread_recorder();
+void set_thread_recorder(class ThreadRecorder*);
+
+class MasterThreadRecorder& getUIThreadRecorder();
+
+template<typename ACCUMULATOR>
+class AccumulatorBuffer : public LLRefCount
+{
+	typedef AccumulatorBuffer<ACCUMULATOR> self_t;
+	static const U32 DEFAULT_ACCUMULATOR_BUFFER_SIZE = 64;
+private:
+	struct StaticAllocationMarker { };
+
+	AccumulatorBuffer(StaticAllocationMarker m)
+	:	mStorageSize(0),
+		mStorage(NULL)
+	{}
+
+public:
+
+	AccumulatorBuffer(const AccumulatorBuffer& other = *getDefaultBuffer())
+	:	mStorageSize(0),
+		mStorage(NULL)
+	{
+		resize(other.mStorageSize);
+		for (S32 i = 0; i < sNextStorageSlot; i++)
+		{
+			mStorage[i] = other.mStorage[i];
+		}
+	}
+
+	~AccumulatorBuffer()
+	{
+		if (isPrimary())
+		{
+			LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(NULL);
+		}
+		delete[] mStorage;
+	}
+
+	LL_FORCE_INLINE ACCUMULATOR& operator[](size_t index) 
+	{ 
+		return mStorage[index]; 
+	}
+
+	LL_FORCE_INLINE const ACCUMULATOR& operator[](size_t index) const
+	{ 
+		return mStorage[index]; 
+	}
+
+	void addSamples(const AccumulatorBuffer<ACCUMULATOR>& other, bool append = true)
+	{
+		llassert(mStorageSize >= sNextStorageSlot && other.mStorageSize > sNextStorageSlot);
+		for (size_t i = 0; i < sNextStorageSlot; i++)
+		{
+			mStorage[i].addSamples(other.mStorage[i], append);
+		}
+	}
+
+	void copyFrom(const AccumulatorBuffer<ACCUMULATOR>& other)
+	{
+		llassert(mStorageSize >= sNextStorageSlot && other.mStorageSize > sNextStorageSlot);
+		for (size_t i = 0; i < sNextStorageSlot; i++)
+		{
+			mStorage[i] = other.mStorage[i];
+		}
+	}
+
+	void reset(const AccumulatorBuffer<ACCUMULATOR>* other = NULL)
+	{
+		llassert(mStorageSize >= sNextStorageSlot);
+		for (size_t i = 0; i < sNextStorageSlot; i++)
+		{
+			mStorage[i].reset(other ? &other->mStorage[i] : NULL);
+		}
+	}
+
+	void flush()
+	{
+		llassert(mStorageSize >= sNextStorageSlot);
+		for (size_t i = 0; i < sNextStorageSlot; i++)
+		{
+			mStorage[i].flush();
+		}
+	}
+
+	void makePrimary()
+	{
+		LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(mStorage);
+	}
+
+	bool isPrimary() const
+	{
+		return LLThreadLocalSingletonPointer<ACCUMULATOR>::getInstance() == mStorage;
+	}
+
+	LL_FORCE_INLINE static ACCUMULATOR* getPrimaryStorage() 
+	{ 
+		ACCUMULATOR* accumulator = LLThreadLocalSingletonPointer<ACCUMULATOR>::getInstance();
+		return accumulator ? accumulator : sDefaultBuffer->mStorage;
+	}
+
+	// NOTE: this is not thread-safe.  We assume that slots are reserved in the main thread before any child threads are spawned
+	size_t reserveSlot()
+	{
+#ifndef LL_RELEASE_FOR_DOWNLOAD
+		if (LLTrace::isInitialized())
+		{
+			llerrs << "Attempting to declare trace object after program initialization.  Trace objects should be statically initialized." << llendl;
+		}
+#endif
+		size_t next_slot = sNextStorageSlot++;
+		if (next_slot >= mStorageSize)
+		{
+			resize(mStorageSize + (mStorageSize >> 2));
+		}
+		llassert(mStorage && next_slot < mStorageSize);
+		return next_slot;
+	}
+
+	void resize(size_t new_size)
+	{
+		if (new_size <= mStorageSize) return;
+
+		ACCUMULATOR* old_storage = mStorage;
+		mStorage = new ACCUMULATOR[new_size];
+		if (old_storage)
+		{
+			for (S32 i = 0; i < mStorageSize; i++)
+			{
+				mStorage[i] = old_storage[i];
+			}
+		}
+		mStorageSize = new_size;
+		delete[] old_storage;
+
+		self_t* default_buffer = getDefaultBuffer();
+		if (this != default_buffer
+			&& new_size > default_buffer->size())
+		{
+			//NB: this is not thread safe, but we assume that all resizing occurs during static initialization
+			default_buffer->resize(new_size);
+		}
+	}
+
+	size_t size() const
+	{
+		return sNextStorageSlot;
+	}
+
+	static self_t* getDefaultBuffer()
+	{
+		static bool sInitialized = false;
+		if (!sInitialized)
+		{
+			// this buffer is allowed to leak so that trace calls from global destructors have somewhere to put their data
+			// so as not to trigger an access violation
+			sDefaultBuffer = new AccumulatorBuffer(StaticAllocationMarker());
+			sInitialized = true;
+			sDefaultBuffer->resize(DEFAULT_ACCUMULATOR_BUFFER_SIZE);
+		}
+		return sDefaultBuffer;
+	}
+
+private:
+	ACCUMULATOR*	mStorage;
+	size_t			mStorageSize;
+	static size_t	sNextStorageSlot;
+	static self_t*	sDefaultBuffer;
+};
+
+template<typename ACCUMULATOR> size_t AccumulatorBuffer<ACCUMULATOR>::sNextStorageSlot = 0;
+template<typename ACCUMULATOR> AccumulatorBuffer<ACCUMULATOR>* AccumulatorBuffer<ACCUMULATOR>::sDefaultBuffer = NULL;
+
+template<typename ACCUMULATOR>
+class TraceType 
+:	 public LLInstanceTracker<TraceType<ACCUMULATOR>, std::string>
+{
+public:
+	TraceType(const char* name, const char* description = NULL)
+	:	LLInstanceTracker<TraceType<ACCUMULATOR>, std::string>(name),
+		mName(name),
+		mDescription(description ? description : ""),
+		mAccumulatorIndex(AccumulatorBuffer<ACCUMULATOR>::getDefaultBuffer()->reserveSlot())
+	{}
+
+	LL_FORCE_INLINE ACCUMULATOR* getPrimaryAccumulator() const
+	{
+		ACCUMULATOR* accumulator_storage = AccumulatorBuffer<ACCUMULATOR>::getPrimaryStorage();
+		return &accumulator_storage[mAccumulatorIndex];
+	}
+
+	size_t getIndex() const { return mAccumulatorIndex; }
+
+	virtual const char* getUnitLabel() { return ""; }
+
+	const std::string& getName() const { return mName; }
+
+protected:
+	const std::string	mName;
+	const std::string	mDescription;
+	const size_t		mAccumulatorIndex;
+};
+
+class EventAccumulator
+{
+public:
+	typedef F64 value_t;
+	typedef F64 mean_t;
+
+	EventAccumulator()
+	:	mSum(0),
+		mMin((std::numeric_limits<F64>::max)()),
+		mMax((std::numeric_limits<F64>::min)()),
+		mMean(0),
+		mVarianceSum(0),
+		mNumSamples(0),
+		mLastValue(0)
+	{}
+
+	void record(F64 value)
+	{
+		mNumSamples++;
+		mSum += value;
+		// NOTE: both conditions will hold on first pass through
+		if (value < mMin)
+		{
+			mMin = value;
+		}
+		if (value > mMax)
+		{
+			mMax = value;
+		}
+		F64 old_mean = mMean;
+		mMean += (value - old_mean) / (F64)mNumSamples;
+		mVarianceSum += (value - old_mean) * (value - mMean);
+		mLastValue = value;
+	}
+
+	void addSamples(const EventAccumulator& other, bool append)
+	{
+		if (other.mNumSamples)
+		{
+			mSum += other.mSum;
+
+			// NOTE: both conditions will hold first time through
+			if (other.mMin < mMin) { mMin = other.mMin; }
+			if (other.mMax > mMax) { mMax = other.mMax; }
+
+			// combine variance (and hence standard deviation) of 2 different sized sample groups using
+			// the following formula: http://www.mrc-bsu.cam.ac.uk/cochrane/handbook/chapter_7/7_7_3_8_combining_groups.htm
+			F64 n_1 = (F64)mNumSamples,
+				n_2 = (F64)other.mNumSamples;
+			F64 m_1 = mMean,
+				m_2 = other.mMean;
+			F64 v_1 = mVarianceSum / mNumSamples,
+				v_2 = other.mVarianceSum / other.mNumSamples;
+			if (n_1 == 0)
+			{
+				mVarianceSum = other.mVarianceSum;
+			}
+			else if (n_2 == 0)
+			{
+				// don't touch variance
+				// mVarianceSum = mVarianceSum;
+			}
+			else
+			{
+				mVarianceSum = (F64)mNumSamples
+								* ((((n_1 - 1.f) * v_1)
+									+ ((n_2 - 1.f) * v_2)
+									+ (((n_1 * n_2) / (n_1 + n_2))
+										* ((m_1 * m_1) + (m_2 * m_2) - (2.f * m_1 * m_2))))
+									/ (n_1 + n_2 - 1.f));
+			}
+
+			F64 weight = (F64)mNumSamples / (F64)(mNumSamples + other.mNumSamples);
+			mNumSamples += other.mNumSamples;
+			mMean = mMean * weight + other.mMean * (1.f - weight);
+			if (append) mLastValue = other.mLastValue;
+		}
+	}
+
+	void reset(const EventAccumulator* other)
+	{
+		mNumSamples = 0;
+		mSum = 0;
+		mMin = std::numeric_limits<F64>::max();
+		mMax = std::numeric_limits<F64>::min();
+		mMean = 0;
+		mVarianceSum = 0;
+		mLastValue = other ? other->mLastValue : 0;
+	}
+
+	void flush() {}
+
+	F64	getSum() const { return mSum; }
+	F64	getMin() const { return mMin; }
+	F64	getMax() const { return mMax; }
+	F64	getLastValue() const { return mLastValue; }
+	F64	getMean() const { return mMean; }
+	F64 getStandardDeviation() const { return sqrtf(mVarianceSum / mNumSamples); }
+	U32 getSampleCount() const { return mNumSamples; }
+
+private:
+	F64	mSum,
+		mMin,
+		mMax,
+		mLastValue;
+
+	F64	mMean,
+		mVarianceSum;
+
+	U32	mNumSamples;
+};
+
+
+class SampleAccumulator
+{
+public:
+	typedef F64 value_t;
+	typedef F64 mean_t;
+
+	SampleAccumulator()
+	:	mSum(0),
+		mMin((std::numeric_limits<F64>::max)()),
+		mMax((std::numeric_limits<F64>::min)()),
+		mMean(0),
+		mVarianceSum(0),
+		mLastSampleTimeStamp(LLTimer::getTotalSeconds()),
+		mTotalSamplingTime(0),
+		mNumSamples(0),
+		mLastValue(0),
+		mHasValue(false)
+	{}
+
+	void sample(F64 value)
+	{
+		LLUnitImplicit<LLUnits::Seconds, F64> time_stamp = LLTimer::getTotalSeconds();
+		LLUnitImplicit<LLUnits::Seconds, F64> delta_time = time_stamp - mLastSampleTimeStamp;
+		mLastSampleTimeStamp = time_stamp;
+
+		if (mHasValue)
+		{
+			mTotalSamplingTime += delta_time;
+			mSum += mLastValue * delta_time;
+
+			// NOTE: both conditions will hold first time through
+			if (value < mMin) { mMin = value; }
+			if (value > mMax) { mMax = value; }
+
+			F64 old_mean = mMean;
+			mMean += (delta_time / mTotalSamplingTime) * (mLastValue - old_mean);
+			mVarianceSum += delta_time * (mLastValue - old_mean) * (mLastValue - mMean);
+		}
+
+		mLastValue = value;
+		mNumSamples++;
+		mHasValue = true;
+	}
+
+	void addSamples(const SampleAccumulator& other, bool append)
+	{
+		if (other.mTotalSamplingTime)
+		{
+			mSum += other.mSum;
+
+			// NOTE: both conditions will hold first time through
+			if (other.mMin < mMin) { mMin = other.mMin; }
+			if (other.mMax > mMax) { mMax = other.mMax; }
+
+			// combine variance (and hence standard deviation) of 2 different sized sample groups using
+			// the following formula: http://www.mrc-bsu.cam.ac.uk/cochrane/handbook/chapter_7/7_7_3_8_combining_groups.htm
+			F64 n_1 = mTotalSamplingTime,
+				n_2 = other.mTotalSamplingTime;
+			F64 m_1 = mMean,
+				m_2 = other.mMean;
+			F64 v_1 = mVarianceSum / mTotalSamplingTime,
+				v_2 = other.mVarianceSum / other.mTotalSamplingTime;
+			if (n_1 == 0)
+			{
+				mVarianceSum = other.mVarianceSum;
+			}
+			else if (n_2 == 0)
+			{
+				// variance is unchanged
+				// mVarianceSum = mVarianceSum;
+			}
+			else
+			{
+				mVarianceSum =	mTotalSamplingTime
+								* ((((n_1 - 1.f) * v_1)
+									+ ((n_2 - 1.f) * v_2)
+									+ (((n_1 * n_2) / (n_1 + n_2))
+										* ((m_1 * m_1) + (m_2 * m_2) - (2.f * m_1 * m_2))))
+									/ (n_1 + n_2 - 1.f));
+			}
+
+			llassert(other.mTotalSamplingTime > 0);
+			F64 weight = mTotalSamplingTime / (mTotalSamplingTime + other.mTotalSamplingTime);
+			mNumSamples += other.mNumSamples;
+			mTotalSamplingTime += other.mTotalSamplingTime;
+			mMean = (mMean * weight) + (other.mMean * (1.0 - weight));
+			if (append)
+			{
+				mLastValue = other.mLastValue;
+				mLastSampleTimeStamp = other.mLastSampleTimeStamp;
+				mHasValue |= other.mHasValue;
+			}
+		}
+	}
+
+	void reset(const SampleAccumulator* other)
+	{
+		mNumSamples = 0;
+		mSum = 0;
+		mMin = std::numeric_limits<F64>::max();
+		mMax = std::numeric_limits<F64>::min();
+		mMean = other ? other->mLastValue : 0;
+		mVarianceSum = 0;
+		mLastSampleTimeStamp = LLTimer::getTotalSeconds();
+		mTotalSamplingTime = 0;
+		mLastValue = other ? other->mLastValue : 0;
+		mHasValue = other ? other->mHasValue : false;
+	}
+
+	void flush()
+	{
+		LLUnitImplicit<LLUnits::Seconds, F64> time_stamp = LLTimer::getTotalSeconds();
+		LLUnitImplicit<LLUnits::Seconds, F64> delta_time = time_stamp - mLastSampleTimeStamp;
+
+		if (mHasValue)
+		{
+			mSum += mLastValue * delta_time;
+			mTotalSamplingTime += delta_time;
+		}
+		mLastSampleTimeStamp = time_stamp;
+	}
+
+	F64	getSum() const { return mSum; }
+	F64	getMin() const { return mMin; }
+	F64	getMax() const { return mMax; }
+	F64	getLastValue() const { return mLastValue; }
+	F64	getMean() const { return mMean; }
+	F64 getStandardDeviation() const { return sqrtf(mVarianceSum / mTotalSamplingTime); }
+	U32 getSampleCount() const { return mNumSamples; }
+
+private:
+	F64	mSum,
+		mMin,
+		mMax,
+		mLastValue;
+
+	bool mHasValue;
+
+	F64	mMean,
+		mVarianceSum;
+
+	LLUnitImplicit<LLUnits::Seconds, F64>	mLastSampleTimeStamp,
+											mTotalSamplingTime;
+
+	U32	mNumSamples;
+};
+
+class CountAccumulator
+{
+public:
+	typedef F64 value_t;
+	typedef F64 mean_t;
+
+	CountAccumulator()
+	:	mSum(0),
+		mNumSamples(0)
+	{}
+
+	void add(F64 value)
+	{
+		mNumSamples++;
+		mSum += value;
+	}
+
+	void addSamples(const CountAccumulator& other, bool /*append*/)
+	{
+		mSum += other.mSum;
+		mNumSamples += other.mNumSamples;
+	}
+
+	void reset(const CountAccumulator* other)
+	{
+		mNumSamples = 0;
+		mSum = 0;
+	}
+
+	void flush() {}
+
+	F64	getSum() const { return mSum; }
+
+	U32 getSampleCount() const { return mNumSamples; }
+
+private:
+	F64	mSum;
+
+	U32	mNumSamples;
+};
+
+class TimeBlockAccumulator
+{
+public:
+	typedef LLUnit<LLUnits::Seconds, F64> value_t;
+	typedef LLUnit<LLUnits::Seconds, F64> mean_t;
+	typedef TimeBlockAccumulator self_t;
+
+	// fake classes that allows us to view different facets of underlying statistic
+	struct CallCountFacet 
+	{
+		typedef U32 value_t;
+		typedef F32 mean_t;
+	};
+
+	struct SelfTimeFacet
+	{
+		typedef LLUnit<LLUnits::Seconds, F64> value_t;
+		typedef LLUnit<LLUnits::Seconds, F64> mean_t;
+	};
+
+	TimeBlockAccumulator();
+	void addSamples(const self_t& other, bool /*append*/);
+	void reset(const self_t* other);
+	void flush() {}
+
+	//
+	// members
+	//
+	U64							mStartTotalTimeCounter,
+								mTotalTimeCounter,
+								mSelfTimeCounter;
+	U32							mCalls;
+	class TimeBlock*			mParent;		// last acknowledged parent of this time block
+	class TimeBlock*			mLastCaller;	// used to bootstrap tree construction
+	U16							mActiveCount;	// number of timers with this ID active on stack
+	bool						mMoveUpTree;	// needs to be moved up the tree of timers at the end of frame
+
+};
+
+template<>
+class TraceType<TimeBlockAccumulator::CallCountFacet>
+:	public TraceType<TimeBlockAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+	:	TraceType<TimeBlockAccumulator>(name, description)
+	{}
+};
+
+template<>
+class TraceType<TimeBlockAccumulator::SelfTimeFacet>
+	:	public TraceType<TimeBlockAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+		:	TraceType<TimeBlockAccumulator>(name, description)
+	{}
+};
+
+class TimeBlock;
+class TimeBlockTreeNode
+{
+public:
+	TimeBlockTreeNode();
+
+	void setParent(TimeBlock* parent);
+	TimeBlock* getParent() { return mParent; }
+
+	TimeBlock*					mBlock;
+	TimeBlock*					mParent;	
+	std::vector<TimeBlock*>		mChildren;
+	bool						mNeedsSorting;
+};
+
+
+template <typename T = F64>
+class EventStatHandle
+:	public TraceType<EventAccumulator>
+{
+public:
+	typedef typename F64 storage_t;
+	typedef TraceType<EventAccumulator> trace_t;
+
+	EventStatHandle(const char* name, const char* description = NULL)
+	:	trace_t(name, description)
+	{}
+
+	/*virtual*/ const char* getUnitLabel() { return LLGetUnitLabel<T>::getUnitLabel(); }
+
+};
+
+template<typename T, typename VALUE_T>
+void record(EventStatHandle<T>& measurement, VALUE_T value)
+{
+	T converted_value(value);
+	measurement.getPrimaryAccumulator()->record(LLUnits::rawValue(converted_value));
+}
+
+template <typename T = F64>
+class SampleStatHandle
+:	public TraceType<SampleAccumulator>
+{
+public:
+	typedef F64 storage_t;
+	typedef TraceType<SampleAccumulator> trace_t;
+
+	SampleStatHandle(const char* name, const char* description = NULL)
+	:	trace_t(name, description)
+	{}
+
+	/*virtual*/ const char* getUnitLabel() { return LLGetUnitLabel<T>::getUnitLabel(); }
+};
+
+template<typename T, typename VALUE_T>
+void sample(SampleStatHandle<T>& measurement, VALUE_T value)
+{
+	T converted_value(value);
+	measurement.getPrimaryAccumulator()->sample(LLUnits::rawValue(converted_value));
+}
+
+template <typename T = F64>
+class CountStatHandle
+:	public TraceType<CountAccumulator>
+{
+public:
+	typedef typename F64 storage_t;
+	typedef TraceType<CountAccumulator> trace_t;
+
+	CountStatHandle(const char* name, const char* description = NULL) 
+	:	trace_t(name)
+	{}
+
+	/*virtual*/ const char* getUnitLabel() { return LLGetUnitLabel<T>::getUnitLabel(); }
+};
+
+template<typename T, typename VALUE_T>
+void add(CountStatHandle<T>& count, VALUE_T value)
+{
+	T converted_value(value);
+	count.getPrimaryAccumulator()->add(LLUnits::rawValue(converted_value));
+}
+
+
+struct MemStatAccumulator
+{
+	typedef MemStatAccumulator self_t;
+
+	// fake classes that allows us to view different facets of underlying statistic
+	struct AllocationCountFacet 
+	{
+		typedef U32 value_t;
+		typedef F32 mean_t;
+	};
+
+	struct DeallocationCountFacet 
+	{
+		typedef U32 value_t;
+		typedef F32 mean_t;
+	};
+
+	struct ChildMemFacet
+	{
+		typedef LLUnit<LLUnits::Bytes, F64> value_t;
+		typedef LLUnit<LLUnits::Bytes, F64> mean_t;
+	};
+
+	MemStatAccumulator()
+	:	mAllocatedCount(0),
+		mDeallocatedCount(0)
+	{}
+
+	void addSamples(const MemStatAccumulator& other, bool append)
+	{
+		mSize.addSamples(other.mSize, append);
+		mChildSize.addSamples(other.mChildSize, append);
+		mAllocatedCount += other.mAllocatedCount;
+		mDeallocatedCount += other.mDeallocatedCount;
+	}
+
+	void reset(const MemStatAccumulator* other)
+	{
+		mSize.reset(other ? &other->mSize : NULL);
+		mChildSize.reset(other ? &other->mChildSize : NULL);
+		mAllocatedCount = 0;
+		mDeallocatedCount = 0;
+	}
+
+	void flush() 
+	{
+		mSize.flush();
+		mChildSize.flush();
+	}
+
+	SampleAccumulator	mSize,
+						mChildSize;
+	int					mAllocatedCount,
+						mDeallocatedCount;
+};
+
+
+template<>
+class TraceType<MemStatAccumulator::AllocationCountFacet>
+:	public TraceType<MemStatAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+	:	TraceType<MemStatAccumulator>(name, description)
+	{}
+};
+
+template<>
+class TraceType<MemStatAccumulator::DeallocationCountFacet>
+:	public TraceType<MemStatAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+	:	TraceType<MemStatAccumulator>(name, description)
+	{}
+};
+
+template<>
+class TraceType<MemStatAccumulator::ChildMemFacet>
+	:	public TraceType<MemStatAccumulator>
+{
+public:
+
+	TraceType(const char* name, const char* description = "")
+		:	TraceType<MemStatAccumulator>(name, description)
+	{}
+};
+
+class MemStatHandle : public TraceType<MemStatAccumulator>
+{
+public:
+	typedef TraceType<MemStatAccumulator> trace_t;
+	MemStatHandle(const char* name)
+	:	trace_t(name)
+	{}
+
+	/*virtual*/ const char* getUnitLabel() { return "B"; }
+
+	TraceType<MemStatAccumulator::AllocationCountFacet>& allocationCount() 
+	{ 
+		return static_cast<TraceType<MemStatAccumulator::AllocationCountFacet>&>(*(TraceType<MemStatAccumulator>*)this);
+	}
+
+	TraceType<MemStatAccumulator::DeallocationCountFacet>& deallocationCount() 
+	{ 
+		return static_cast<TraceType<MemStatAccumulator::DeallocationCountFacet>&>(*(TraceType<MemStatAccumulator>*)this);
+	}
+
+	TraceType<MemStatAccumulator::ChildMemFacet>& childMem() 
+	{ 
+		return static_cast<TraceType<MemStatAccumulator::ChildMemFacet>&>(*(TraceType<MemStatAccumulator>*)this);
+	}
+};
+
+// measures effective memory footprint of specified type
+// specialize to cover different types
+
+template<typename T>
+struct MemFootprint
+{
+	static size_t measure(const T& value)
+	{
+		return sizeof(T);
+	}
+
+	static size_t measure()
+	{
+		return sizeof(T);
+	}
+};
+
+template<typename T>
+struct MemFootprint<T*>
+{
+	static size_t measure(const T* value)
+	{
+		if (!value)
+		{
+			return 0;
+		}
+		return MemFootprint<T>::measure(*value);
+	}
+
+	static size_t measure()
+	{
+		return MemFootprint<T>::measure();
+	}
+};
+
+template<typename T>
+struct MemFootprint<std::basic_string<T> >
+{
+	static size_t measure(const std::basic_string<T>& value)
+	{
+		return value.capacity() * sizeof(T);
+	}
+
+	static size_t measure()
+	{
+		return sizeof(std::basic_string<T>);
+	}
+};
+
+template<typename T>
+struct MemFootprint<std::vector<T> >
+{
+	static size_t measure(const std::vector<T>& value)
+	{
+		return value.capacity() * MemFootprint<T>::measure();
+	}
+
+	static size_t measure()
+	{
+		return sizeof(std::vector<T>);
+	}
+};
+
+template<typename T>
+struct MemFootprint<std::list<T> >
+{
+	static size_t measure(const std::list<T>& value)
+	{
+		return value.size() * (MemFootprint<T>::measure() + sizeof(void*) * 2);
+	}
+
+	static size_t measure()
+	{
+		return sizeof(std::list<T>);
+	}
+};
+
+template<typename DERIVED, size_t ALIGNMENT = LL_DEFAULT_HEAP_ALIGN>
+class MemTrackable
+{
+	template<typename TRACKED, typename TRACKED_IS_TRACKER>
+	struct TrackMemImpl;
+
+	typedef MemTrackable<DERIVED> mem_trackable_t;
+
+public:
+	typedef void mem_trackable_tag_t;
+
+	virtual ~MemTrackable()
+	{
+		memDisclaim(mMemFootprint);
+	}
+
+	void* operator new(size_t size) 
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize.sample(accumulator->mSize.getLastValue() + (F64)size);
+			accumulator->mAllocatedCount++;
+		}
+
+		return ::operator new(size);
+	}
+
+	void operator delete(void* ptr, size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize.sample(accumulator->mSize.getLastValue() - (F64)size);
+			accumulator->mAllocatedCount--;
+			accumulator->mDeallocatedCount++;
+		}
+		::operator delete(ptr);
+	}
+
+	void *operator new [](size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize.sample(accumulator->mSize.getLastValue() + (F64)size);
+			accumulator->mAllocatedCount++;
+		}
+
+		return ::operator new[](size);
+	}
+
+	void operator delete[](void* ptr, size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize.sample(accumulator->mSize.getLastValue() - (F64)size);
+			accumulator->mAllocatedCount--;
+			accumulator->mDeallocatedCount++;
+		}
+		::operator delete[](ptr);
+	}
+
+	// claim memory associated with other objects/data as our own, adding to our calculated footprint
+	template<typename CLAIM_T>
+	CLAIM_T& memClaim(CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::claim(*this, value);
+		return value;
+	}
+
+	template<typename CLAIM_T>
+	const CLAIM_T& memClaim(const CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::claim(*this, value);
+		return value;
+	}
+
+
+	void memClaimAmount(size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		mMemFootprint += size;
+		if (accumulator)
+		{
+			accumulator->mSize.sample(accumulator->mSize.getLastValue() + (F64)size);
+		}
+	}
+
+	// remove memory we had claimed from our calculated footprint
+	template<typename CLAIM_T>
+	CLAIM_T& memDisclaim(CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::disclaim(*this, value);
+		return value;
+	}
+
+	template<typename CLAIM_T>
+	const CLAIM_T& memDisclaim(const CLAIM_T& value)
+	{
+		TrackMemImpl<CLAIM_T>::disclaim(*this, value);
+		return value;
+	}
+
+	void memDisclaimAmount(size_t size)
+	{
+		MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+		if (accumulator)
+		{
+			accumulator->mSize.sample(accumulator->mSize.getLastValue() - (F64)size);
+		}
+	}
+
+private:
+	size_t mMemFootprint;
+
+	template<typename TRACKED, typename TRACKED_IS_TRACKER = void>
+	struct TrackMemImpl
+	{
+		static void claim(mem_trackable_t& tracker, const TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				size_t footprint = MemFootprint<TRACKED>::measure(tracked);
+				accumulator->mSize.sample(accumulator->mSize.getLastValue() + (F64)footprint);
+				tracker.mMemFootprint += footprint;
+			}
+		}
+
+		static void disclaim(mem_trackable_t& tracker, const TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				size_t footprint = MemFootprint<TRACKED>::measure(tracked);
+				accumulator->mSize.sample(accumulator->mSize.getLastValue() - (F64)footprint);
+				tracker.mMemFootprint -= footprint;
+			}
+		}
+	};
+
+	template<typename TRACKED>
+	struct TrackMemImpl<TRACKED, typename TRACKED::mem_trackable_tag_t>
+	{
+		static void claim(mem_trackable_t& tracker, TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				accumulator->mChildSize.sample(accumulator->mChildSize.getLastValue() + (F64)MemFootprint<TRACKED>::measure(tracked));
+			}
+		}
+
+		static void disclaim(mem_trackable_t& tracker, TRACKED& tracked)
+		{
+			MemStatAccumulator* accumulator = DERIVED::sMemStat.getPrimaryAccumulator();
+			if (accumulator)
+			{
+				accumulator->mChildSize.sample(accumulator->mChildSize.getLastValue() - (F64)MemFootprint<TRACKED>::measure(tracked));
+			}
+		}
+	};
+};
+
+}
+#endif // LL_LLTRACE_H
diff --git a/indra/llcommon/lltracerecording.cpp b/indra/llcommon/lltracerecording.cpp
new file mode 100644
index 0000000000..d32504b014
--- /dev/null
+++ b/indra/llcommon/lltracerecording.cpp
@@ -0,0 +1,944 @@
+/** 
+ * @file lltracesampler.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltrace.h"
+#include "llfasttimer.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
+#include "llthread.h"
+
+namespace LLTrace
+{
+
+
+///////////////////////////////////////////////////////////////////////
+// RecordingBuffers
+///////////////////////////////////////////////////////////////////////
+
+RecordingBuffers::RecordingBuffers() 
+{}
+
+void RecordingBuffers::handOffTo(RecordingBuffers& other)
+{
+	other.mCounts.reset(&mCounts);
+	other.mSamples.reset(&mSamples);
+	other.mEvents.reset(&mEvents);
+	other.mStackTimers.reset(&mStackTimers);
+	other.mMemStats.reset(&mMemStats);
+}
+
+void RecordingBuffers::makePrimary()
+{
+	mCounts.makePrimary();
+	mSamples.makePrimary();
+	mEvents.makePrimary();
+	mStackTimers.makePrimary();
+	mMemStats.makePrimary();
+
+	ThreadRecorder* thread_recorder = get_thread_recorder().get();
+	AccumulatorBuffer<TimeBlockAccumulator>& timer_accumulator_buffer = mStackTimers;
+	// update stacktimer parent pointers
+	for (S32 i = 0, end_i = mStackTimers.size(); i < end_i; i++)
+	{
+		TimeBlockTreeNode* tree_node = thread_recorder->getTimeBlockTreeNode(i);
+		if (tree_node)
+		{
+			timer_accumulator_buffer[i].mParent = tree_node->mParent;
+		}
+	}
+}
+
+bool RecordingBuffers::isPrimary() const
+{
+	return mCounts.isPrimary();
+}
+
+void RecordingBuffers::append( const RecordingBuffers& other )
+{
+	mCounts.addSamples(other.mCounts);
+	mSamples.addSamples(other.mSamples);
+	mEvents.addSamples(other.mEvents);
+	mMemStats.addSamples(other.mMemStats);
+	mStackTimers.addSamples(other.mStackTimers);
+}
+
+void RecordingBuffers::merge( const RecordingBuffers& other)
+{
+	mCounts.addSamples(other.mCounts, false);
+	mSamples.addSamples(other.mSamples, false);
+	mEvents.addSamples(other.mEvents, false);
+	mMemStats.addSamples(other.mMemStats, false);
+	// for now, hold out timers from merge, need to be displayed per thread
+	//mStackTimers.addSamples(other.mStackTimers, false);
+}
+
+void RecordingBuffers::reset(RecordingBuffers* other)
+{
+	mCounts.reset(other ? &other->mCounts : NULL);
+	mSamples.reset(other ? &other->mSamples : NULL);
+	mEvents.reset(other ? &other->mEvents : NULL);
+	mStackTimers.reset(other ? &other->mStackTimers : NULL);
+	mMemStats.reset(other ? &other->mMemStats : NULL);
+}
+
+void RecordingBuffers::flush()
+{
+	mSamples.flush();
+}
+
+///////////////////////////////////////////////////////////////////////
+// Recording
+///////////////////////////////////////////////////////////////////////
+
+Recording::Recording() 
+:	mElapsedSeconds(0)
+{
+	mBuffers = new RecordingBuffers();
+}
+
+Recording::Recording( const Recording& other )
+{
+	// this will allow us to seamlessly start without affecting any data we've acquired from other
+	setPlayState(PAUSED);
+
+	Recording& mutable_other = const_cast<Recording&>(other);
+	EPlayState other_play_state = other.getPlayState();
+	mutable_other.pause();
+
+	mBuffers = other.mBuffers;
+
+	LLStopWatchControlsMixin<Recording>::setPlayState(other_play_state);
+	mutable_other.setPlayState(other_play_state);
+
+	// above call will clear mElapsedSeconds as a side effect, so copy it here
+	mElapsedSeconds = other.mElapsedSeconds;
+	mSamplingTimer = other.mSamplingTimer;
+}
+
+
+Recording::~Recording()
+{
+	if (isStarted() && LLTrace::get_thread_recorder().notNull())
+	{
+		LLTrace::get_thread_recorder()->deactivate(this);
+	}
+}
+
+void Recording::update()
+{
+	if (isStarted())
+	{
+		mBuffers.write()->flush();
+		LLTrace::get_thread_recorder()->bringUpToDate(this);
+		mSamplingTimer.reset();
+	}
+}
+
+void Recording::handleReset()
+{
+	mBuffers.write()->reset();
+
+	mElapsedSeconds = 0.0;
+	mSamplingTimer.reset();
+}
+
+void Recording::handleStart()
+{
+	mSamplingTimer.reset();
+	LLTrace::get_thread_recorder()->activate(this);
+}
+
+void Recording::handleStop()
+{
+	mElapsedSeconds += mSamplingTimer.getElapsedTimeF64();
+	mBuffers.write()->flush();
+	LLTrace::get_thread_recorder()->deactivate(this);
+}
+
+void Recording::handleSplitTo(Recording& other)
+{
+	mBuffers.write()->handOffTo(*other.mBuffers.write());
+}
+
+void Recording::appendRecording( const Recording& other )
+{
+	EPlayState play_state = getPlayState();
+	{
+		pause();
+		mBuffers.write()->append(*other.mBuffers);
+		mElapsedSeconds += other.mElapsedSeconds;
+	}
+	setPlayState(play_state);
+}
+
+void Recording::mergeRecording( const Recording& other)
+{
+	EPlayState play_state = getPlayState();
+	{
+		pause();
+		mBuffers.write()->merge(*other.mBuffers);
+	}
+	setPlayState(play_state);
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getSum(const TraceType<TimeBlockAccumulator>& stat)
+{
+	const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+	update();
+	return (F64)(accumulator.mTotalTimeCounter - accumulator.mStartTotalTimeCounter) 
+				/ (F64)LLTrace::TimeBlock::countsPerSecond();
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getSum(const TraceType<TimeBlockAccumulator::SelfTimeFacet>& stat)
+{
+	const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+	update();
+	return (F64)(accumulator.mSelfTimeCounter) / (F64)LLTrace::TimeBlock::countsPerSecond();
+}
+
+
+U32 Recording::getSum(const TraceType<TimeBlockAccumulator::CallCountFacet>& stat)
+{
+	update();
+	return mBuffers->mStackTimers[stat.getIndex()].mCalls;
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getPerSec(const TraceType<TimeBlockAccumulator>& stat)
+{
+	const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+
+	update();
+	return (F64)(accumulator.mTotalTimeCounter - accumulator.mStartTotalTimeCounter) 
+				/ ((F64)LLTrace::TimeBlock::countsPerSecond() * mElapsedSeconds);
+}
+
+LLUnit<LLUnits::Seconds, F64> Recording::getPerSec(const TraceType<TimeBlockAccumulator::SelfTimeFacet>& stat)
+{
+	const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+
+	update();
+	return (F64)(accumulator.mSelfTimeCounter) 
+			/ ((F64)LLTrace::TimeBlock::countsPerSecond() * mElapsedSeconds);
+}
+
+F32 Recording::getPerSec(const TraceType<TimeBlockAccumulator::CallCountFacet>& stat)
+{
+	update();
+	return (F32)mBuffers->mStackTimers[stat.getIndex()].mCalls / mElapsedSeconds;
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getMin(const TraceType<MemStatAccumulator>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mSize.getMin();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getMean(const TraceType<MemStatAccumulator>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mSize.getMean();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getMax(const TraceType<MemStatAccumulator>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mSize.getMax();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getStandardDeviation(const TraceType<MemStatAccumulator>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mSize.getStandardDeviation();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getLastValue(const TraceType<MemStatAccumulator>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mSize.getLastValue();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getMin(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mChildSize.getMin();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getMean(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mChildSize.getMean();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getMax(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mChildSize.getMax();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getStandardDeviation(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mChildSize.getStandardDeviation();
+}
+
+LLUnit<LLUnits::Bytes, F64> Recording::getLastValue(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mChildSize.getLastValue();
+}
+
+U32 Recording::getSum(const TraceType<MemStatAccumulator::AllocationCountFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mAllocatedCount;
+}
+
+U32 Recording::getSum(const TraceType<MemStatAccumulator::DeallocationCountFacet>& stat)
+{
+	update();
+	return mBuffers->mMemStats[stat.getIndex()].mAllocatedCount;
+}
+
+
+F64 Recording::getSum( const TraceType<CountAccumulator>& stat )
+{
+	update();
+	return mBuffers->mCounts[stat.getIndex()].getSum();
+}
+
+F64 Recording::getSum( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return (F64)mBuffers->mEvents[stat.getIndex()].getSum();
+}
+
+F64 Recording::getPerSec( const TraceType<CountAccumulator>& stat )
+{
+	update();
+	F64 sum = mBuffers->mCounts[stat.getIndex()].getSum();
+	return  (sum != 0.0) 
+		? (sum / mElapsedSeconds)
+		: 0.0;
+}
+
+U32 Recording::getSampleCount( const TraceType<CountAccumulator>& stat )
+{
+	update();
+	return mBuffers->mCounts[stat.getIndex()].getSampleCount();
+}
+
+F64 Recording::getMin( const TraceType<SampleAccumulator>& stat )
+{
+	update();
+	return mBuffers->mSamples[stat.getIndex()].getMin();
+}
+
+F64 Recording::getMax( const TraceType<SampleAccumulator>& stat )
+{
+	update();
+	return mBuffers->mSamples[stat.getIndex()].getMax();
+}
+
+F64 Recording::getMean( const TraceType<SampleAccumulator>& stat )
+{
+	update();
+	return mBuffers->mSamples[stat.getIndex()].getMean();
+}
+
+F64 Recording::getStandardDeviation( const TraceType<SampleAccumulator>& stat )
+{
+	update();
+	return mBuffers->mSamples[stat.getIndex()].getStandardDeviation();
+}
+
+F64 Recording::getLastValue( const TraceType<SampleAccumulator>& stat )
+{
+	update();
+	return mBuffers->mSamples[stat.getIndex()].getLastValue();
+}
+
+U32 Recording::getSampleCount( const TraceType<SampleAccumulator>& stat )
+{
+	update();
+	return mBuffers->mSamples[stat.getIndex()].getSampleCount();
+}
+
+F64 Recording::getMin( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return mBuffers->mEvents[stat.getIndex()].getMin();
+}
+
+F64 Recording::getMax( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return mBuffers->mEvents[stat.getIndex()].getMax();
+}
+
+F64 Recording::getMean( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return mBuffers->mEvents[stat.getIndex()].getMean();
+}
+
+F64 Recording::getStandardDeviation( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return mBuffers->mEvents[stat.getIndex()].getStandardDeviation();
+}
+
+F64 Recording::getLastValue( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return mBuffers->mEvents[stat.getIndex()].getLastValue();
+}
+
+U32 Recording::getSampleCount( const TraceType<EventAccumulator>& stat )
+{
+	update();
+	return mBuffers->mEvents[stat.getIndex()].getSampleCount();
+}
+
+///////////////////////////////////////////////////////////////////////
+// PeriodicRecording
+///////////////////////////////////////////////////////////////////////
+
+PeriodicRecording::PeriodicRecording( U32 num_periods, EPlayState state) 
+:	mAutoResize(num_periods == 0),
+	mCurPeriod(0),
+	mRecordingPeriods(num_periods ? num_periods : 1)
+{
+	setPlayState(state);
+}
+
+void PeriodicRecording::nextPeriod()
+{
+	if (mAutoResize)
+	{
+		mRecordingPeriods.push_back(Recording());
+	}
+
+	Recording& old_recording = getCurRecording();
+
+	mCurPeriod = (mCurPeriod + 1) % mRecordingPeriods.size();
+	old_recording.splitTo(getCurRecording());
+}
+
+
+void PeriodicRecording::appendPeriodicRecording( PeriodicRecording& other )
+{
+	if (other.mRecordingPeriods.empty()) return;
+
+	EPlayState play_state = getPlayState();
+	pause();
+
+	EPlayState other_play_state = other.getPlayState();
+	other.pause();
+
+	U32 other_recording_count = other.mRecordingPeriods.size();
+
+	Recording& other_oldest_recording = other.mRecordingPeriods[(other.mCurPeriod + 1) % other.mRecordingPeriods.size()];
+
+	// if I have a recording of any length, then close it off and start a fresh one
+	if (getCurRecording().getDuration().value())
+	{
+		nextPeriod();
+	}
+	getCurRecording().appendRecording(other_oldest_recording);
+
+	if (other_recording_count > 1)
+	{
+		if (mAutoResize)
+		{
+			for (S32 other_index = (other.mCurPeriod + 2) % other_recording_count,
+				end_index = (other.mCurPeriod + 1) % other_recording_count; 
+				other_index != end_index; 
+				other_index = (other_index + 1) % other_recording_count)
+			{
+				llassert(other.mRecordingPeriods[other_index].getDuration() != 0.f 
+							&& (mRecordingPeriods.empty() 
+								|| other.mRecordingPeriods[other_index].getDuration() != mRecordingPeriods.back().getDuration()));
+				mRecordingPeriods.push_back(other.mRecordingPeriods[other_index]);
+			}
+
+			mCurPeriod = mRecordingPeriods.size() - 1;
+		}
+		else
+		{
+			size_t num_to_copy = llmin(	mRecordingPeriods.size(), other.mRecordingPeriods.size() - 1);
+			std::vector<Recording>::iterator src_it = other.mRecordingPeriods.begin() 
+														+ (	(other.mCurPeriod + 1									// oldest period
+																+ (other.mRecordingPeriods.size() - num_to_copy))	// minus room for copy
+															% other.mRecordingPeriods.size());
+			std::vector<Recording>::iterator dest_it = mRecordingPeriods.begin() + ((mCurPeriod + 1) % mRecordingPeriods.size());
+
+			for(S32 i = 0; i < num_to_copy; i++)
+			{
+				*dest_it = *src_it;
+
+				if (++src_it == other.mRecordingPeriods.end())
+				{
+					src_it = other.mRecordingPeriods.begin();
+				}
+
+				if (++dest_it == mRecordingPeriods.end())
+				{
+					dest_it = mRecordingPeriods.begin();
+				}
+			}
+		
+			mCurPeriod = (mCurPeriod + num_to_copy) % mRecordingPeriods.size();
+		}
+	}
+
+	nextPeriod();
+
+	setPlayState(play_state);
+	other.setPlayState(other_play_state);
+}
+
+LLUnit<LLUnits::Seconds, F64> PeriodicRecording::getDuration() const
+{
+	LLUnit<LLUnits::Seconds, F64> duration;
+	size_t num_periods = mRecordingPeriods.size();
+	for (size_t i = 1; i <= num_periods; i++)
+	{
+		size_t index = (mCurPeriod + num_periods - i) % num_periods;
+		duration += mRecordingPeriods[index].getDuration();
+	}
+	return duration;
+}
+
+
+LLTrace::Recording PeriodicRecording::snapshotCurRecording() const
+{
+	Recording recording_copy(getCurRecording());
+	recording_copy.stop();
+	return recording_copy;
+}
+
+
+Recording& PeriodicRecording::getLastRecording()
+{
+	return getPrevRecording(1);
+}
+
+const Recording& PeriodicRecording::getLastRecording() const
+{
+	return getPrevRecording(1);
+}
+
+Recording& PeriodicRecording::getCurRecording()
+{
+	return mRecordingPeriods[mCurPeriod];
+}
+
+const Recording& PeriodicRecording::getCurRecording() const
+{
+	return mRecordingPeriods[mCurPeriod];
+}
+
+Recording& PeriodicRecording::getPrevRecording( U32 offset )
+{
+	U32 num_periods = mRecordingPeriods.size();
+	offset = llclamp(offset, 0u, num_periods - 1);
+	return mRecordingPeriods[(mCurPeriod + num_periods - offset) % num_periods];
+}
+
+const Recording& PeriodicRecording::getPrevRecording( U32 offset ) const
+{
+	U32 num_periods = mRecordingPeriods.size();
+	offset = llclamp(offset, 0u, num_periods - 1);
+	return mRecordingPeriods[(mCurPeriod + num_periods - offset) % num_periods];
+}
+
+void PeriodicRecording::handleStart()
+{
+	getCurRecording().start();
+}
+
+void PeriodicRecording::handleStop()
+{
+	getCurRecording().pause();
+}
+
+void PeriodicRecording::handleReset()
+{
+	if (mAutoResize)
+	{
+		mRecordingPeriods.clear();
+		mRecordingPeriods.push_back(Recording());
+	}
+	else
+	{
+		for (std::vector<Recording>::iterator it = mRecordingPeriods.begin(), end_it = mRecordingPeriods.end();
+			it != end_it;
+			++it)
+		{
+			it->reset();
+		}
+	}
+	mCurPeriod = 0;
+	getCurRecording().setPlayState(getPlayState());
+}
+
+void PeriodicRecording::handleSplitTo(PeriodicRecording& other)
+{
+	getCurRecording().splitTo(other.getCurRecording());
+}
+
+
+F64 PeriodicRecording::getPeriodMean( const TraceType<EventAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+	size_t total_periods = mRecordingPeriods.size();
+	num_periods = llmin(num_periods, total_periods);
+
+	F64 mean = 0;
+	if (num_periods <= 0) { return mean; }
+
+	S32 total_sample_count = 0;
+
+	for (S32 i = 1; i <= num_periods; i++)
+	{
+		S32 index = (mCurPeriod + total_periods - i) % total_periods;
+		if (mRecordingPeriods[index].getDuration() > 0.f)
+		{
+			S32 period_sample_count = mRecordingPeriods[index].getSampleCount(stat);
+			mean += mRecordingPeriods[index].getMean(stat) * period_sample_count;
+			total_sample_count += period_sample_count;
+		}
+	}
+
+	if (total_sample_count)
+	{
+		mean = mean / total_sample_count;
+	}
+	return mean;
+}
+
+F64 PeriodicRecording::getPeriodMin( const TraceType<EventAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+	size_t total_periods = mRecordingPeriods.size();
+	num_periods = llmin(num_periods, total_periods);
+
+	F64 min_val = std::numeric_limits<F64>::max();
+	for (S32 i = 1; i <= num_periods; i++)
+	{
+		S32 index = (mCurPeriod + total_periods - i) % total_periods;
+		min_val = llmin(min_val, mRecordingPeriods[index].getMin(stat));
+	}
+	return min_val;
+}
+
+F64 PeriodicRecording::getPeriodMax( const TraceType<EventAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+	size_t total_periods = mRecordingPeriods.size();
+	num_periods = llmin(num_periods, total_periods);
+
+	F64 max_val = std::numeric_limits<F64>::min();
+	for (S32 i = 1; i <= num_periods; i++)
+	{
+		S32 index = (mCurPeriod + total_periods - i) % total_periods;
+		max_val = llmax(max_val, mRecordingPeriods[index].getMax(stat));
+	}
+	return max_val;
+}
+
+F64 PeriodicRecording::getPeriodMin( const TraceType<SampleAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+	size_t total_periods = mRecordingPeriods.size();
+	num_periods = llmin(num_periods, total_periods);
+
+	F64 min_val = std::numeric_limits<F64>::max();
+	for (S32 i = 1; i <= num_periods; i++)
+	{
+		S32 index = (mCurPeriod + total_periods - i) % total_periods;
+		min_val = llmin(min_val, mRecordingPeriods[index].getMin(stat));
+	}
+	return min_val;
+}
+
+F64 PeriodicRecording::getPeriodMax(const TraceType<SampleAccumulator>& stat, size_t num_periods /*= U32_MAX*/)
+{
+	size_t total_periods = mRecordingPeriods.size();
+	num_periods = llmin(num_periods, total_periods);
+
+	F64 max_val = std::numeric_limits<F64>::min();
+	for (S32 i = 1; i <= num_periods; i++)
+	{
+		S32 index = (mCurPeriod + total_periods - i) % total_periods;
+		max_val = llmax(max_val, mRecordingPeriods[index].getMax(stat));
+	}
+	return max_val;
+}
+
+
+F64 PeriodicRecording::getPeriodMean( const TraceType<SampleAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+	size_t total_periods = mRecordingPeriods.size();
+	num_periods = llmin(num_periods, total_periods);
+
+	LLUnit<LLUnits::Seconds, F64> total_duration = 0.f;
+
+	F64 mean = 0;
+	if (num_periods <= 0) { return mean; }
+
+	for (S32 i = 1; i <= num_periods; i++)
+	{
+		S32 index = (mCurPeriod + total_periods - i) % total_periods;
+		if (mRecordingPeriods[index].getDuration() > 0.f)
+		{
+			LLUnit<LLUnits::Seconds, F64> recording_duration = mRecordingPeriods[index].getDuration();
+			mean += mRecordingPeriods[index].getMean(stat) * recording_duration.value();
+			total_duration += recording_duration;
+		}
+	}
+
+	if (total_duration.value())
+	{
+		mean = mean / total_duration;
+	}
+	return mean;
+}
+
+
+
+///////////////////////////////////////////////////////////////////////
+// ExtendableRecording
+///////////////////////////////////////////////////////////////////////
+
+void ExtendableRecording::extend()
+{
+	// stop recording to get latest data
+	mPotentialRecording.stop();
+	// push the data back to accepted recording
+	mAcceptedRecording.appendRecording(mPotentialRecording);
+	// flush data, so we can start from scratch
+	mPotentialRecording.reset();
+	// go back to play state we were in initially
+	mPotentialRecording.setPlayState(getPlayState());
+}
+
+void ExtendableRecording::handleStart()
+{
+	mPotentialRecording.start();
+}
+
+void ExtendableRecording::handleStop()
+{
+	mPotentialRecording.pause();
+}
+
+void ExtendableRecording::handleReset()
+{
+	mAcceptedRecording.reset();
+	mPotentialRecording.reset();
+}
+
+void ExtendableRecording::handleSplitTo(ExtendableRecording& other)
+{
+	mPotentialRecording.splitTo(other.mPotentialRecording);
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// ExtendablePeriodicRecording
+///////////////////////////////////////////////////////////////////////
+
+
+ExtendablePeriodicRecording::ExtendablePeriodicRecording() 
+:	mAcceptedRecording(0), 
+	mPotentialRecording(0)
+{}
+
+void ExtendablePeriodicRecording::extend()
+{
+	llassert(mPotentialRecording.getPlayState() == getPlayState());
+	// stop recording to get latest data
+	mPotentialRecording.pause();
+	// push the data back to accepted recording
+	mAcceptedRecording.appendPeriodicRecording(mPotentialRecording);
+	// flush data, so we can start from scratch
+	mPotentialRecording.reset();
+	// go back to play state we were in initially
+	mPotentialRecording.setPlayState(getPlayState());
+}
+
+
+void ExtendablePeriodicRecording::handleStart()
+{
+	mPotentialRecording.start();
+}
+
+void ExtendablePeriodicRecording::handleStop()
+{
+	mPotentialRecording.pause();
+}
+
+void ExtendablePeriodicRecording::handleReset()
+{
+	mAcceptedRecording.reset();
+	mPotentialRecording.reset();
+}
+
+void ExtendablePeriodicRecording::handleSplitTo(ExtendablePeriodicRecording& other)
+{
+	mPotentialRecording.splitTo(other.mPotentialRecording);
+}
+
+
+PeriodicRecording& get_frame_recording()
+{
+	static LLThreadLocalPointer<PeriodicRecording> sRecording(new PeriodicRecording(1000, PeriodicRecording::STARTED));
+	return *sRecording;
+}
+
+}
+
+void LLStopWatchControlsMixinCommon::start()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		handleReset();
+		handleStart();
+		break;
+	case PAUSED:
+		handleStart();
+		break;
+	case STARTED:
+		handleReset();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::stop()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		break;
+	case PAUSED:
+		break;
+	case STARTED:
+		handleStop();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STOPPED;
+}
+
+void LLStopWatchControlsMixinCommon::pause()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		break;
+	case PAUSED:
+		break;
+	case STARTED:
+		handleStop();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = PAUSED;
+}
+
+void LLStopWatchControlsMixinCommon::resume()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		handleStart();
+		break;
+	case PAUSED:
+		handleStart();
+		break;
+	case STARTED:
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::restart()
+{
+	switch (mPlayState)
+	{
+	case STOPPED:
+		handleReset();
+		handleStart();
+		break;
+	case PAUSED:
+		handleReset();
+		handleStart();
+		break;
+	case STARTED:
+		handleReset();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+	mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::reset()
+{
+	handleReset();
+}
+
+void LLStopWatchControlsMixinCommon::setPlayState( EPlayState state )
+{
+	switch(state)
+	{
+	case STOPPED:
+		stop();
+		break;
+	case PAUSED:
+		pause();
+		break;
+	case STARTED:
+		start();
+		break;
+	default:
+		llassert(false);
+		break;
+	}
+
+	mPlayState = state;
+}
diff --git a/indra/llcommon/lltracerecording.h b/indra/llcommon/lltracerecording.h
new file mode 100644
index 0000000000..4651bfcb61
--- /dev/null
+++ b/indra/llcommon/lltracerecording.h
@@ -0,0 +1,527 @@
+/** 
+ * @file lltracerecording.h
+ * @brief Sampling object for collecting runtime statistics originating from lltrace.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACERECORDING_H
+#define LL_LLTRACERECORDING_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llpointer.h"
+#include "lltimer.h"
+#include "lltrace.h"
+
+class LLStopWatchControlsMixinCommon
+{
+public:
+	virtual ~LLStopWatchControlsMixinCommon() {}
+
+	enum EPlayState
+	{
+		STOPPED,
+		PAUSED,
+		STARTED
+	};
+
+	void start();
+	void stop();
+	void pause();
+	void resume();
+	void restart();
+	void reset();
+
+	bool isStarted() const { return mPlayState == STARTED; }
+	bool isPaused() const  { return mPlayState == PAUSED; }
+	bool isStopped() const { return mPlayState == STOPPED; }
+	EPlayState getPlayState() const { return mPlayState; }
+	// force play state to specific value by calling appropriate handle* methods
+	void setPlayState(EPlayState state);
+
+protected:
+	LLStopWatchControlsMixinCommon()
+	:	mPlayState(STOPPED)
+	{}
+
+private:
+	// trigger active behavior (without reset)
+	virtual void handleStart() = 0;
+	// stop active behavior
+	virtual void handleStop() = 0;
+	// clear accumulated state, can be called while started
+	virtual void handleReset() = 0;
+
+	EPlayState mPlayState;
+};
+
+template<typename DERIVED>
+class LLStopWatchControlsMixin
+:	public LLStopWatchControlsMixinCommon
+{
+public:
+	typedef LLStopWatchControlsMixin<DERIVED> self_t;
+	virtual void splitTo(DERIVED& other)
+	{
+		EPlayState play_state = getPlayState();
+		stop();
+		other.reset();
+
+		handleSplitTo(other);
+
+		other.setPlayState(play_state);
+	}
+
+	virtual void splitFrom(DERIVED& other)
+	{
+		static_cast<self_t&>(other).handleSplitTo(*static_cast<DERIVED*>(this));
+	}
+private:
+	// atomically stop this object while starting the other
+	// no data can be missed in between stop and start
+	virtual void handleSplitTo(DERIVED& other) {};
+
+};
+
+namespace LLTrace
+{
+	struct RecordingBuffers : public LLRefCount
+	{
+		RecordingBuffers();
+
+		void handOffTo(RecordingBuffers& other);
+		void makePrimary();
+		bool isPrimary() const;
+
+		void append(const RecordingBuffers& other);
+		void merge(const RecordingBuffers& other);
+		void reset(RecordingBuffers* other = NULL);
+		void flush();
+
+		AccumulatorBuffer<CountAccumulator>	 			mCounts;
+		AccumulatorBuffer<SampleAccumulator>			mSamples;
+		AccumulatorBuffer<EventAccumulator>				mEvents;
+		AccumulatorBuffer<TimeBlockAccumulator> 		mStackTimers;
+		AccumulatorBuffer<MemStatAccumulator> 			mMemStats;
+	};
+
+	class Recording 
+	:	public LLStopWatchControlsMixin<Recording>
+	{
+	public:
+		Recording();
+
+		Recording(const Recording& other);
+		~Recording();
+
+		// accumulate data from subsequent, non-overlapping recording
+		void appendRecording(const Recording& other);
+
+		// gather data from recording, ignoring time relationship (for example, pulling data from slave threads)
+		void mergeRecording(const Recording& other);
+
+		// grab latest recorded data
+		void update();
+
+		// ensure that buffers are exclusively owned by this recording
+		void makeUnique() { mBuffers.makeUnique(); }
+
+		// Timer accessors
+		LLUnit<LLUnits::Seconds, F64> getSum(const TraceType<TimeBlockAccumulator>& stat);
+		LLUnit<LLUnits::Seconds, F64> getSum(const TraceType<TimeBlockAccumulator::SelfTimeFacet>& stat);
+		U32 getSum(const TraceType<TimeBlockAccumulator::CallCountFacet>& stat);
+
+		LLUnit<LLUnits::Seconds, F64> getPerSec(const TraceType<TimeBlockAccumulator>& stat);
+		LLUnit<LLUnits::Seconds, F64> getPerSec(const TraceType<TimeBlockAccumulator::SelfTimeFacet>& stat);
+		F32 getPerSec(const TraceType<TimeBlockAccumulator::CallCountFacet>& stat);
+
+		// Memory accessors
+		LLUnit<LLUnits::Bytes, F64> getMin(const TraceType<MemStatAccumulator>& stat);
+		LLUnit<LLUnits::Bytes, F64> getMean(const TraceType<MemStatAccumulator>& stat);
+		LLUnit<LLUnits::Bytes, F64> getMax(const TraceType<MemStatAccumulator>& stat);
+		LLUnit<LLUnits::Bytes, F64> getStandardDeviation(const TraceType<MemStatAccumulator>& stat);
+		LLUnit<LLUnits::Bytes, F64> getLastValue(const TraceType<MemStatAccumulator>& stat);
+
+		LLUnit<LLUnits::Bytes, F64> getMin(const TraceType<MemStatAccumulator::ChildMemFacet>& stat);
+		LLUnit<LLUnits::Bytes, F64> getMean(const TraceType<MemStatAccumulator::ChildMemFacet>& stat);
+		LLUnit<LLUnits::Bytes, F64> getMax(const TraceType<MemStatAccumulator::ChildMemFacet>& stat);
+		LLUnit<LLUnits::Bytes, F64> getStandardDeviation(const TraceType<MemStatAccumulator::ChildMemFacet>& stat);
+		LLUnit<LLUnits::Bytes, F64> getLastValue(const TraceType<MemStatAccumulator::ChildMemFacet>& stat);
+
+		U32 getSum(const TraceType<MemStatAccumulator::AllocationCountFacet>& stat);
+		U32 getSum(const TraceType<MemStatAccumulator::DeallocationCountFacet>& stat);
+
+		// CountStatHandle accessors
+		F64 getSum(const TraceType<CountAccumulator>& stat);
+		template <typename T>
+		T getSum(const CountStatHandle<T>& stat)
+		{
+			return (T)getSum(static_cast<const TraceType<CountAccumulator>&> (stat));
+		}
+
+		F64 getPerSec(const TraceType<CountAccumulator>& stat);
+		template <typename T>
+		T getPerSec(const CountStatHandle<T>& stat)
+		{
+			return (T)getPerSec(static_cast<const TraceType<CountAccumulator>&> (stat));
+		}
+
+		U32 getSampleCount(const TraceType<CountAccumulator>& stat);
+
+
+		// SampleStatHandle accessors
+		F64 getMin(const TraceType<SampleAccumulator>& stat);
+		template <typename T>
+		T getMin(const SampleStatHandle<T>& stat)
+		{
+			return (T)getMin(static_cast<const TraceType<SampleAccumulator>&> (stat));
+		}
+
+		F64 getMean(const TraceType<SampleAccumulator>& stat);
+		template <typename T>
+		T getMean(SampleStatHandle<T>& stat)
+		{
+			return (T)getMean(static_cast<const TraceType<SampleAccumulator>&> (stat));
+		}
+
+		F64 getMax(const TraceType<SampleAccumulator>& stat);
+		template <typename T>
+		T getMax(const SampleStatHandle<T>& stat)
+		{
+			return (T)getMax(static_cast<const TraceType<SampleAccumulator>&> (stat));
+		}
+
+		F64 getStandardDeviation(const TraceType<SampleAccumulator>& stat);
+		template <typename T>
+		T getStandardDeviation(const SampleStatHandle<T>& stat)
+		{
+			return (T)getStandardDeviation(static_cast<const TraceType<SampleAccumulator>&> (stat));
+		}
+
+		F64 getLastValue(const TraceType<SampleAccumulator>& stat);
+		template <typename T>
+		T getLastValue(const SampleStatHandle<T>& stat)
+		{
+			return (T)getLastValue(static_cast<const TraceType<SampleAccumulator>&> (stat));
+		}
+
+		U32 getSampleCount(const TraceType<SampleAccumulator>& stat);
+
+		// EventStatHandle accessors
+		F64 getSum(const TraceType<EventAccumulator>& stat);
+		template <typename T>
+		T getSum(const EventStatHandle<T>& stat)
+		{
+			return (T)getSum(static_cast<const TraceType<EventAccumulator>&> (stat));
+		}
+
+		F64 getMin(const TraceType<EventAccumulator>& stat);
+		template <typename T>
+		T getMin(const EventStatHandle<T>& stat)
+		{
+			return (T)getMin(static_cast<const TraceType<EventAccumulator>&> (stat));
+		}
+
+		F64 getMax(const TraceType<EventAccumulator>& stat);
+		template <typename T>
+		T getMax(const EventStatHandle<T>& stat)
+		{
+			return (T)getMax(static_cast<const TraceType<EventAccumulator>&> (stat));
+		}
+
+		F64 getMean(const TraceType<EventAccumulator>& stat);
+		template <typename T>
+		T getMean(EventStatHandle<T>& stat)
+		{
+			return (T)getMean(static_cast<const TraceType<EventAccumulator>&> (stat));
+		}
+
+		F64 getStandardDeviation(const TraceType<EventAccumulator>& stat);
+		template <typename T>
+		T getStandardDeviation(const EventStatHandle<T>& stat)
+		{
+			return (T)getStandardDeviation(static_cast<const TraceType<EventAccumulator>&> (stat));
+		}
+
+		F64 getLastValue(const TraceType<EventAccumulator>& stat);
+		template <typename T>
+		T getLastValue(const EventStatHandle<T>& stat)
+		{
+			return (T)getLastValue(static_cast<const TraceType<EventAccumulator>&> (stat));
+		}
+
+		U32 getSampleCount(const TraceType<EventAccumulator>& stat);
+
+		LLUnit<LLUnits::Seconds, F64> getDuration() const { return LLUnit<LLUnits::Seconds, F64>(mElapsedSeconds); }
+
+	protected:
+		friend class ThreadRecorder;
+
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void handleStart();
+		/*virtual*/ void handleStop();
+		/*virtual*/ void handleReset();
+		/*virtual*/ void handleSplitTo(Recording& other);
+
+		// returns data for current thread
+		class ThreadRecorder* getThreadRecorder(); 
+
+		LLTimer				mSamplingTimer;
+		F64					mElapsedSeconds;
+		LLCopyOnWritePointer<RecordingBuffers>	mBuffers;
+	};
+
+	class LL_COMMON_API PeriodicRecording
+	:	public LLStopWatchControlsMixin<PeriodicRecording>
+	{
+	public:
+		PeriodicRecording(U32 num_periods, EPlayState state = STOPPED);
+
+		void nextPeriod();
+		U32 getNumPeriods() { return mRecordingPeriods.size(); }
+
+		LLUnit<LLUnits::Seconds, F64> getDuration() const;
+
+		void appendPeriodicRecording(PeriodicRecording& other);
+		Recording& getLastRecording();
+		const Recording& getLastRecording() const;
+		Recording& getCurRecording();
+		const Recording& getCurRecording() const;
+		Recording& getPrevRecording(U32 offset);
+		const Recording& getPrevRecording(U32 offset) const;
+		Recording snapshotCurRecording() const;
+
+		// catch all for stats that have a defined sum
+		template <typename T>
+		typename T::value_t getPeriodMin(const TraceType<T>& stat, size_t num_periods = U32_MAX)
+		{
+			size_t total_periods = mRecordingPeriods.size();
+			num_periods = llmin(num_periods, total_periods);
+
+			typename T::value_t min_val = std::numeric_limits<typename T::value_t>::max();
+			for (S32 i = 1; i <= num_periods; i++)
+			{
+				S32 index = (mCurPeriod + total_periods - i) % total_periods;
+				min_val = llmin(min_val, mRecordingPeriods[index].getSum(stat));
+			}
+			return min_val;
+		}
+
+		F64 getPeriodMin(const TraceType<SampleAccumulator>& stat, size_t num_periods = U32_MAX);
+		template<typename T>
+		T getPeriodMin(const SampleStatHandle<T>& stat, size_t num_periods = U32_MAX)
+		{
+			return T(getPeriodMin(static_cast<const TraceType<SampleAccumulator>&>(stat), num_periods));
+		}
+
+		F64 getPeriodMin(const TraceType<EventAccumulator>& stat, size_t num_periods = U32_MAX);
+		template<typename T>
+		T getPeriodMin(const EventStatHandle<T>& stat, size_t num_periods = U32_MAX)
+		{
+			return T(getPeriodMin(static_cast<const TraceType<EventAccumulator>&>(stat), num_periods));
+		}
+
+		template <typename T>
+		F64 getPeriodMinPerSec(const TraceType<T>& stat, size_t num_periods = U32_MAX)
+		{
+			size_t total_periods = mRecordingPeriods.size();
+			num_periods = llmin(num_periods, total_periods);
+
+			F64 min_val = std::numeric_limits<F64>::max();
+			for (S32 i = 1; i <= num_periods; i++)
+			{
+				S32 index = (mCurPeriod + total_periods - i) % total_periods;
+				min_val = llmin(min_val, mRecordingPeriods[index].getPerSec(stat));
+			}
+			return min_val;
+		}
+
+		// catch all for stats that have a defined sum
+		template <typename T>
+		typename T::value_t getPeriodMax(const TraceType<T>& stat, size_t num_periods = U32_MAX)
+		{
+			size_t total_periods = mRecordingPeriods.size();
+			num_periods = llmin(num_periods, total_periods);
+
+			typename T::value_t max_val = std::numeric_limits<typename T::value_t>::min();
+			for (S32 i = 1; i <= num_periods; i++)
+			{
+				S32 index = (mCurPeriod + total_periods - i) % total_periods;
+				max_val = llmax(max_val, mRecordingPeriods[index].getSum(stat));
+			}
+			return max_val;
+		}
+
+		F64 getPeriodMax(const TraceType<SampleAccumulator>& stat, size_t num_periods = U32_MAX);
+		template<typename T>
+		T getPeriodMax(const SampleStatHandle<T>& stat, size_t num_periods = U32_MAX)
+		{
+			return T(getPeriodMax(static_cast<const TraceType<SampleAccumulator>&>(stat), num_periods));
+		}
+
+		F64 getPeriodMax(const TraceType<EventAccumulator>& stat, size_t num_periods = U32_MAX);
+		template<typename T>
+		T getPeriodMax(const EventStatHandle<T>& stat, size_t num_periods = U32_MAX)
+		{
+			return T(getPeriodMax(static_cast<const TraceType<EventAccumulator>&>(stat), num_periods));
+		}
+
+		template <typename T>
+		F64 getPeriodMaxPerSec(const TraceType<T>& stat, size_t num_periods = U32_MAX)
+		{
+			size_t total_periods = mRecordingPeriods.size();
+			num_periods = llmin(num_periods, total_periods);
+
+			F64 max_val = std::numeric_limits<F64>::min();
+			for (S32 i = 1; i <= num_periods; i++)
+			{
+				S32 index = (mCurPeriod + total_periods - i) % total_periods;
+				max_val = llmax(max_val, mRecordingPeriods[index].getPerSec(stat));
+			}
+			return max_val;
+		}
+
+		// catch all for stats that have a defined sum
+		template <typename T>
+		typename T::mean_t getPeriodMean(const TraceType<T >& stat, size_t num_periods = U32_MAX)
+		{
+			size_t total_periods = mRecordingPeriods.size();
+			num_periods = llmin(num_periods, total_periods);
+
+			typename T::mean_t mean = 0;
+			if (num_periods <= 0) { return mean; }
+
+			for (S32 i = 1; i <= num_periods; i++)
+			{
+				S32 index = (mCurPeriod + total_periods - i) % total_periods;
+				if (mRecordingPeriods[index].getDuration() > 0.f)
+				{
+					mean += mRecordingPeriods[index].getSum(stat);
+				}
+			}
+			mean = mean / num_periods;
+			return mean;
+		}
+
+		F64 getPeriodMean(const TraceType<SampleAccumulator>& stat, size_t num_periods = U32_MAX);
+		template<typename T> 
+		T getPeriodMean(const SampleStatHandle<T>& stat, size_t num_periods = U32_MAX)
+		{
+			return T(getPeriodMean(static_cast<const TraceType<SampleAccumulator>&>(stat), num_periods));
+		}
+
+		F64 getPeriodMean(const TraceType<EventAccumulator>& stat, size_t num_periods = U32_MAX);
+		template<typename T>
+		T getPeriodMean(const EventStatHandle<T>& stat, size_t num_periods = U32_MAX)
+		{
+			return T(getPeriodMean(static_cast<const TraceType<EventAccumulator>&>(stat), num_periods));
+		}
+
+		template <typename T>
+		typename T::mean_t getPeriodMeanPerSec(const TraceType<T>& stat, size_t num_periods = U32_MAX)
+		{
+			size_t total_periods = mRecordingPeriods.size();
+			num_periods = llmin(num_periods, total_periods);
+
+			typename T::mean_t mean = 0;
+			if (num_periods <= 0) { return mean; }
+
+			for (S32 i = 1; i <= num_periods; i++)
+			{
+				S32 index = (mCurPeriod + total_periods - i) % total_periods;
+				if (mRecordingPeriods[index].getDuration() > 0.f)
+				{
+					mean += mRecordingPeriods[index].getPerSec(stat);
+				}
+			}
+			mean = mean / num_periods;
+			return mean;
+		}
+
+	private:
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void handleStart();
+		/*virtual*/ void handleStop();
+		/*virtual*/ void handleReset();
+		/*virtual*/ void handleSplitTo(PeriodicRecording& other);
+
+	private:
+		std::vector<Recording>	mRecordingPeriods;
+		const bool	mAutoResize;
+		S32			mCurPeriod;
+	};
+
+	PeriodicRecording& get_frame_recording();
+
+	class ExtendableRecording
+	:	public LLStopWatchControlsMixin<ExtendableRecording>
+	{
+	public:
+		void extend();
+
+		Recording& getAcceptedRecording() { return mAcceptedRecording; }
+		const Recording& getAcceptedRecording() const {return mAcceptedRecording;}
+
+		Recording& getPotentialRecording()				{ return mPotentialRecording; }
+		const Recording& getPotentialRecording() const	{ return mPotentialRecording;}
+
+	private:
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void handleStart();
+		/*virtual*/ void handleStop();
+		/*virtual*/ void handleReset();
+		/*virtual*/ void handleSplitTo(ExtendableRecording& other);
+
+	private:
+		Recording mAcceptedRecording;
+		Recording mPotentialRecording;
+	};
+
+	class ExtendablePeriodicRecording
+	:	public LLStopWatchControlsMixin<ExtendablePeriodicRecording>
+	{
+	public:
+		ExtendablePeriodicRecording();
+		void extend();
+
+		PeriodicRecording& getAcceptedRecording()				{ return mAcceptedRecording; }
+		const PeriodicRecording& getAcceptedRecording() const	{return mAcceptedRecording;}
+		
+		PeriodicRecording& getPotentialRecording()				{ return mPotentialRecording; }
+		const PeriodicRecording& getPotentialRecording() const	{return mPotentialRecording;}
+
+	private:
+		// implementation for LLStopWatchControlsMixin
+		/*virtual*/ void handleStart();
+		/*virtual*/ void handleStop();
+		/*virtual*/ void handleReset();
+		/*virtual*/ void handleSplitTo(ExtendablePeriodicRecording& other);
+
+	private:
+		PeriodicRecording mAcceptedRecording;
+		PeriodicRecording mPotentialRecording;
+	};
+}
+
+#endif // LL_LLTRACERECORDING_H
diff --git a/indra/llcommon/lltracethreadrecorder.cpp b/indra/llcommon/lltracethreadrecorder.cpp
new file mode 100644
index 0000000000..c1a0700eff
--- /dev/null
+++ b/indra/llcommon/lltracethreadrecorder.cpp
@@ -0,0 +1,291 @@
+/** 
+ * @file lltracethreadrecorder.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltracethreadrecorder.h"
+#include "llfasttimer.h"
+
+namespace LLTrace
+{
+
+
+///////////////////////////////////////////////////////////////////////
+// ThreadRecorder
+///////////////////////////////////////////////////////////////////////
+
+ThreadRecorder::ThreadRecorder()
+{
+	//NB: the ordering of initialization in this function is very fragile due to a large number of implicit dependencies
+	set_thread_recorder(this);
+	TimeBlock& root_time_block = TimeBlock::getRootTimeBlock();
+
+	ThreadTimerStack* timer_stack = ThreadTimerStack::getInstance();
+	timer_stack->mTimeBlock = &root_time_block;
+	timer_stack->mActiveTimer = NULL;
+
+	mNumTimeBlockTreeNodes = AccumulatorBuffer<TimeBlockAccumulator>::getDefaultBuffer()->size();
+	mTimeBlockTreeNodes = new TimeBlockTreeNode[mNumTimeBlockTreeNodes];
+
+	mThreadRecording.start();
+
+	// initialize time block parent pointers
+	for (LLInstanceTracker<TimeBlock>::instance_iter it = LLInstanceTracker<TimeBlock>::beginInstances(), end_it = LLInstanceTracker<TimeBlock>::endInstances(); 
+		it != end_it; 
+		++it)
+	{
+		TimeBlock& time_block = *it;
+		TimeBlockTreeNode& tree_node = mTimeBlockTreeNodes[it->getIndex()];
+		tree_node.mBlock = &time_block;
+		tree_node.mParent = &root_time_block;
+
+		it->getPrimaryAccumulator()->mParent = &root_time_block;
+	}
+
+	mRootTimer = new BlockTimer(root_time_block);
+	timer_stack->mActiveTimer = mRootTimer;
+
+	TimeBlock::getRootTimeBlock().getPrimaryAccumulator()->mActiveCount = 1;
+}
+
+ThreadRecorder::~ThreadRecorder()
+{
+	delete mRootTimer;
+
+	if (!mActiveRecordings.empty())
+	{
+		std::for_each(mActiveRecordings.begin(), mActiveRecordings.end(), DeletePointer());
+		mActiveRecordings.clear();
+	}
+
+	set_thread_recorder(NULL);
+	delete[] mTimeBlockTreeNodes;
+}
+
+TimeBlockTreeNode* ThreadRecorder::getTimeBlockTreeNode(S32 index)
+{
+	if (0 <= index && index < mNumTimeBlockTreeNodes)
+	{
+		return &mTimeBlockTreeNodes[index];
+	}
+	return NULL;
+}
+
+
+void ThreadRecorder::activate( Recording* recording )
+{
+	ActiveRecording* active_recording = new ActiveRecording(recording);
+	if (!mActiveRecordings.empty())
+	{
+		mActiveRecordings.back()->mPartialRecording.handOffTo(active_recording->mPartialRecording);
+	}
+	mActiveRecordings.push_back(active_recording);
+
+	mActiveRecordings.back()->mPartialRecording.makePrimary();
+}
+
+ThreadRecorder::active_recording_list_t::reverse_iterator ThreadRecorder::bringUpToDate( Recording* recording )
+{
+	if (mActiveRecordings.empty()) return mActiveRecordings.rend();
+
+	mActiveRecordings.back()->mPartialRecording.flush();
+
+	active_recording_list_t::reverse_iterator it, end_it;
+	for (it = mActiveRecordings.rbegin(), end_it = mActiveRecordings.rend();
+		it != end_it;
+		++it)
+	{
+		ActiveRecording* cur_recording = *it;
+
+		active_recording_list_t::reverse_iterator next_it = it;
+		++next_it;
+
+		// if we have another recording further down in the stack...
+		if (next_it != mActiveRecordings.rend())
+		{
+			// ...push our gathered data down to it
+			(*next_it)->mPartialRecording.append(cur_recording->mPartialRecording);
+		}
+
+		// copy accumulated measurements into result buffer and clear accumulator (mPartialRecording)
+		cur_recording->movePartialToTarget();
+
+		if (cur_recording->mTargetRecording == recording)
+		{
+			// found the recording, so return it
+			break;
+		}
+	}
+
+	if (it == end_it)
+	{
+		llwarns << "Recording not active on this thread" << llendl;
+	}
+
+	return it;
+}
+
+void ThreadRecorder::deactivate( Recording* recording )
+{
+	active_recording_list_t::reverse_iterator it = bringUpToDate(recording);
+	if (it != mActiveRecordings.rend())
+	{
+		// and if we've found the recording we wanted to update
+		active_recording_list_t::reverse_iterator next_it = it;
+		++next_it;
+		if (next_it != mActiveRecordings.rend())
+		{
+			(*next_it)->mPartialRecording.makePrimary();
+		}
+
+		active_recording_list_t::iterator recording_to_remove = (++it).base();
+		llassert((*recording_to_remove)->mTargetRecording == recording);
+		delete *recording_to_remove;
+		mActiveRecordings.erase(recording_to_remove);
+	}
+}
+
+ThreadRecorder::ActiveRecording::ActiveRecording( Recording* target ) 
+:	mTargetRecording(target)
+{
+}
+
+void ThreadRecorder::ActiveRecording::movePartialToTarget()
+{
+	mTargetRecording->mBuffers.write()->append(mPartialRecording);
+	// reset based on self to keep history
+	mPartialRecording.reset(&mPartialRecording);
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// SlaveThreadRecorder
+///////////////////////////////////////////////////////////////////////
+
+SlaveThreadRecorder::SlaveThreadRecorder(MasterThreadRecorder& master)
+:	mMasterRecorder(master)
+{
+	mMasterRecorder.addSlaveThread(this);
+}
+
+SlaveThreadRecorder::~SlaveThreadRecorder()
+{
+	mMasterRecorder.removeSlaveThread(this);
+}
+
+void SlaveThreadRecorder::pushToMaster()
+{
+	mThreadRecording.stop();
+	{
+		LLMutexLock(mMasterRecorder.getSlaveListMutex());
+		mSharedData.appendFrom(mThreadRecording);
+	}
+	mThreadRecording.start();
+}
+
+void SlaveThreadRecorder::SharedData::appendFrom( const Recording& source )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	appendRecording(source);
+}
+
+void SlaveThreadRecorder::SharedData::appendTo( Recording& sink )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	sink.appendRecording(*this);
+}
+
+void SlaveThreadRecorder::SharedData::mergeFrom( const RecordingBuffers& source )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	mBuffers.write()->merge(source);
+}
+
+void SlaveThreadRecorder::SharedData::mergeTo( RecordingBuffers& sink )
+{
+	LLMutexLock lock(&mRecordingMutex);
+	sink.merge(*mBuffers);
+}
+
+void SlaveThreadRecorder::SharedData::reset()
+{
+	LLMutexLock lock(&mRecordingMutex);
+	Recording::reset();
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// MasterThreadRecorder
+///////////////////////////////////////////////////////////////////////
+
+static LLFastTimer::DeclareTimer FTM_PULL_TRACE_DATA_FROM_SLAVES("Pull slave trace data");
+void MasterThreadRecorder::pullFromSlaveThreads()
+{
+	LLFastTimer _(FTM_PULL_TRACE_DATA_FROM_SLAVES);
+	if (mActiveRecordings.empty()) return;
+
+	LLMutexLock lock(&mSlaveListMutex);
+
+	RecordingBuffers& target_recording_buffers = mActiveRecordings.back()->mPartialRecording;
+	for (slave_thread_recorder_list_t::iterator it = mSlaveThreadRecorders.begin(), end_it = mSlaveThreadRecorders.end();
+		it != end_it;
+		++it)
+	{
+		// ignore block timing info for now
+		(*it)->mSharedData.mergeTo(target_recording_buffers);
+		(*it)->mSharedData.reset();
+	}
+}
+
+void MasterThreadRecorder::addSlaveThread( class SlaveThreadRecorder* child )
+{
+	LLMutexLock lock(&mSlaveListMutex);
+
+	mSlaveThreadRecorders.push_back(child);
+}
+
+void MasterThreadRecorder::removeSlaveThread( class SlaveThreadRecorder* child )
+{
+	LLMutexLock lock(&mSlaveListMutex);
+
+	for (slave_thread_recorder_list_t::iterator it = mSlaveThreadRecorders.begin(), end_it = mSlaveThreadRecorders.end();
+		it != end_it;
+		++it)
+	{
+		if ((*it) == child)
+		{
+			mSlaveThreadRecorders.erase(it);
+			break;
+		}
+	}
+}
+
+void MasterThreadRecorder::pushToMaster()
+{}
+
+MasterThreadRecorder::MasterThreadRecorder()
+{}
+
+}
diff --git a/indra/llcommon/lltracethreadrecorder.h b/indra/llcommon/lltracethreadrecorder.h
new file mode 100644
index 0000000000..bf3701304f
--- /dev/null
+++ b/indra/llcommon/lltracethreadrecorder.h
@@ -0,0 +1,126 @@
+/** 
+ * @file lltrace.h
+ * @brief Runtime statistics accumulation.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLTRACETHREADRECORDER_H
+#define LL_LLTRACETHREADRECORDER_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+
+#include "llmutex.h"
+#include "lltracerecording.h"
+
+namespace LLTrace
+{
+	class LL_COMMON_API ThreadRecorder
+	{
+	protected:
+		struct ActiveRecording;
+		typedef std::vector<ActiveRecording*> active_recording_list_t;
+	public:
+		ThreadRecorder();
+
+		virtual ~ThreadRecorder();
+
+		void activate(Recording* recording);
+		void deactivate(Recording* recording);
+		active_recording_list_t::reverse_iterator bringUpToDate(Recording* recording);
+
+		virtual void pushToMaster() = 0;
+
+		TimeBlockTreeNode* getTimeBlockTreeNode(S32 index);
+
+	protected:
+		struct ActiveRecording
+		{
+			ActiveRecording(Recording* target);
+
+			Recording*			mTargetRecording;
+			RecordingBuffers	mPartialRecording;
+
+			void movePartialToTarget();
+		};
+		Recording					mThreadRecording;
+
+		active_recording_list_t		mActiveRecordings;
+
+		class BlockTimer*			mRootTimer;
+		TimeBlockTreeNode*			mTimeBlockTreeNodes;
+		size_t						mNumTimeBlockTreeNodes;
+	};
+
+	class LL_COMMON_API MasterThreadRecorder : public ThreadRecorder
+	{
+	public:
+		MasterThreadRecorder();
+
+		void addSlaveThread(class SlaveThreadRecorder* child);
+		void removeSlaveThread(class SlaveThreadRecorder* child);
+
+		/*virtual */ void pushToMaster();
+
+		// call this periodically to gather stats data from slave threads
+		void pullFromSlaveThreads();
+
+		LLMutex* getSlaveListMutex() { return &mSlaveListMutex; }
+
+
+	private:
+
+		typedef std::list<class SlaveThreadRecorder*> slave_thread_recorder_list_t;
+
+		slave_thread_recorder_list_t	mSlaveThreadRecorders;	// list of slave thread recorders associated with this master
+		LLMutex							mSlaveListMutex;		// protects access to slave list
+	};
+
+	class LL_COMMON_API SlaveThreadRecorder : public ThreadRecorder
+	{
+	public:
+		SlaveThreadRecorder(MasterThreadRecorder& master);
+		~SlaveThreadRecorder();
+
+		// call this periodically to gather stats data for master thread to consume
+		/*virtual*/ void pushToMaster();
+
+		MasterThreadRecorder* 	mMaster;
+
+		class SharedData : public Recording
+		{
+		public:
+			void appendFrom(const Recording& source);
+			void appendTo(Recording& sink);
+			void mergeFrom(const RecordingBuffers& source);
+			void mergeTo(RecordingBuffers& sink);
+			void reset();
+		private:
+			LLMutex		mRecordingMutex;
+		};
+		SharedData				mSharedData;
+		MasterThreadRecorder&	mMasterRecorder;
+	};
+}
+
+#endif // LL_LLTRACETHREADRECORDER_H
diff --git a/indra/llcommon/lltypeinfolookup.h b/indra/llcommon/lltypeinfolookup.h
deleted file mode 100755
index 0b6862444e..0000000000
--- a/indra/llcommon/lltypeinfolookup.h
+++ /dev/null
@@ -1,117 +0,0 @@
-/**
- * @file   lltypeinfolookup.h
- * @author Nat Goodspeed
- * @date   2012-04-08
- * @brief  Template data structure like std::map<std::type_info*, T>
- * 
- * $LicenseInfo:firstyear=2012&license=viewerlgpl$
- * Copyright (c) 2012, Linden Research, Inc.
- * $/LicenseInfo$
- */
-
-#if ! defined(LL_LLTYPEINFOLOOKUP_H)
-#define LL_LLTYPEINFOLOOKUP_H
-
-#include <boost/unordered_map.hpp>
-#include <boost/functional/hash.hpp>
-#include <boost/optional.hpp>
-#include <functional>               // std::binary_function
-#include <typeinfo>
-
-/**
- * The following helper classes are based on the Boost.Unordered documentation:
- * http://www.boost.org/doc/libs/1_45_0/doc/html/unordered/hash_equality.html
- */
-
-/**
- * Compute hash for a string passed as const char*
- */
-struct const_char_star_hash: public std::unary_function<const char*, std::size_t>
-{
-    std::size_t operator()(const char* str) const
-    {
-        std::size_t seed = 0;
-        for ( ; *str; ++str)
-        {
-            boost::hash_combine(seed, *str);
-        }
-        return seed;
-    }
-};
-
-/**
- * Compute equality for strings passed as const char*
- *
- * I (nat) suspect that this is where the default behavior breaks for the
- * const char* values returned from std::type_info::name(). If you compare the
- * two const char* pointer values, as a naive, unspecialized implementation
- * will surely do, they'll compare unequal.
- */
-struct const_char_star_equal: public std::binary_function<const char*, const char*, bool>
-{
-    bool operator()(const char* lhs, const char* rhs) const
-    {
-        return strcmp(lhs, rhs) == 0;
-    }
-};
-
-/**
- * LLTypeInfoLookup is specifically designed for use cases for which you might
- * consider std::map<std::type_info*, VALUE>. We have several such data
- * structures in the viewer. The trouble with them is that at least on Linux,
- * you can't rely on always getting the same std::type_info* for a given type:
- * different load modules will produce different std::type_info*.
- * LLTypeInfoLookup contains a workaround to address this issue.
- *
- * The API deliberately diverges from std::map in several respects:
- * * It avoids iterators, not only begin()/end() but also as return values
- *   from insert() and find(). This bypasses transform_iterator overhead.
- * * Since we literally use compile-time types as keys, the essential insert()
- *   and find() methods accept the key type as a @em template parameter,
- *   accepting and returning value_type as a normal runtime value. This is to
- *   permit future optimization (e.g. compile-time type hashing) without
- *   changing the API.
- */
-template <typename VALUE>
-class LLTypeInfoLookup
-{
-    // Use this for our underlying implementation: lookup by
-    // std::type_info::name() string. This is one of the rare cases in which I
-    // dare use const char* directly, rather than std::string, because I'm
-    // sure that every value returned by std::type_info::name() is static.
-    // HOWEVER, specify our own hash + equality functors: naively comparing
-    // distinct const char* values won't work.
-    typedef boost::unordered_map<const char*, VALUE,
-                                 const_char_star_hash, const_char_star_equal> impl_map_type;
-
-public:
-    typedef VALUE value_type;
-
-    LLTypeInfoLookup() {}
-
-    bool empty() const { return mMap.empty(); }
-    std::size_t size() const { return mMap.size(); }
-
-    template <typename KEY>
-    bool insert(const value_type& value)
-    {
-        // Obtain and store the std::type_info::name() string as the key.
-        // Return just the bool from std::map::insert()'s return pair.
-        return mMap.insert(typename impl_map_type::value_type(typeid(KEY).name(), value)).second;
-    }
-
-    template <typename KEY>
-    boost::optional<value_type> find() const
-    {
-        // Use the std::type_info::name() string as the key.
-        typename impl_map_type::const_iterator found = mMap.find(typeid(KEY).name());
-        if (found == mMap.end())
-            return boost::optional<value_type>();
-        return found->second;
-    }
-
-private:
-    impl_map_type mMap;
-};
-
-#endif /* ! defined(LL_LLTYPEINFOLOOKUP_H) */
diff --git a/indra/llcommon/llunit.h b/indra/llcommon/llunit.h
new file mode 100644
index 0000000000..a5406fb3f0
--- /dev/null
+++ b/indra/llcommon/llunit.h
@@ -0,0 +1,481 @@
+/** 
+ * @file llunit.h
+ * @brief Unit conversion classes
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2012, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLUNIT_H
+#define LL_LLUNIT_H
+
+#include "stdtypes.h"
+#include "llpreprocessor.h"
+#include "llerrorlegacy.h"
+
+namespace LLUnits
+{
+
+template<typename DERIVED_UNITS_TAG, typename BASE_UNITS_TAG, typename VALUE_TYPE>
+struct ConversionFactor
+{
+	static F64 get()
+	{
+		// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+		llstatic_assert_template(DERIVED_UNITS_TAG, false,  "Cannot convert between types.");
+	}
+};
+
+template<typename BASE_UNITS_TAG, typename VALUE_TYPE>
+struct ConversionFactor<BASE_UNITS_TAG, BASE_UNITS_TAG, VALUE_TYPE>
+{
+	static F64 get() 
+	{ 
+		return 1; 
+	}
+};
+
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE>
+struct LLUnit
+{
+	typedef LLUnit<UNIT_TYPE, STORAGE_TYPE> self_t;
+	typedef STORAGE_TYPE storage_t;
+
+	// value initialization
+	LLUnit(storage_t value = storage_t())
+	:	mValue(value)
+	{}
+
+	// unit initialization and conversion
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	LLUnit(LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	:	mValue(convert(other))
+	{}
+	
+	// value assignment
+	self_t& operator = (storage_t value)
+	{
+		mValue = value;
+		return *this;
+	}
+
+	// unit assignment
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	self_t& operator = (LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	{
+		mValue = convert(other);
+		return *this;
+	}
+
+	storage_t value() const
+	{
+		return mValue;
+	}
+
+	template<typename NEW_UNIT_TYPE> LLUnit<NEW_UNIT_TYPE, STORAGE_TYPE> as()
+	{
+		return LLUnit<NEW_UNIT_TYPE, STORAGE_TYPE>(*this);
+	}
+
+
+	void operator += (storage_t value)
+	{
+		mValue += value;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator += (LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	{
+		mValue += convert(other);
+	}
+
+	void operator -= (storage_t value)
+	{
+		mValue -= value;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator -= (LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	{
+		mValue -= convert(other);
+	}
+
+	void operator *= (storage_t multiplicand)
+	{
+		mValue *= multiplicand;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator *= (LLUnit<OTHER_UNIT, OTHER_STORAGE> multiplicand)
+	{
+		// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+		llstatic_assert_template(OTHER_UNIT, false, "Multiplication of unit types not supported.");
+	}
+
+	void operator /= (storage_t divisor)
+	{
+		mValue /= divisor;
+	}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	void operator /= (LLUnit<OTHER_UNIT, OTHER_STORAGE> divisor)
+	{
+		// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+		llstatic_assert_template(OTHER_UNIT, false, "Illegal in-place division of unit types.");
+	}
+
+	template<typename SOURCE_UNITS, typename SOURCE_STORAGE>
+	static storage_t convert(LLUnit<SOURCE_UNITS, SOURCE_STORAGE> v) 
+	{ 
+		return (storage_t)(v.value() 
+			* LLUnits::ConversionFactor<SOURCE_UNITS, typename UNIT_TYPE::base_unit_t, SOURCE_STORAGE>::get() 
+			* LLUnits::ConversionFactor<typename UNIT_TYPE::base_unit_t, UNIT_TYPE, STORAGE_TYPE>::get()); 
+	}
+
+protected:
+	storage_t mValue;
+};
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE>
+struct LLUnitImplicit : public LLUnit<UNIT_TYPE, STORAGE_TYPE>
+{
+	typedef LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> self_t;
+	typedef typename LLUnit<UNIT_TYPE, STORAGE_TYPE>::storage_t storage_t;
+	typedef LLUnit<UNIT_TYPE, STORAGE_TYPE> base_t;
+
+	LLUnitImplicit(storage_t value = storage_t())
+	:	base_t(value)
+	{}
+
+	template<typename OTHER_UNIT, typename OTHER_STORAGE>
+	LLUnitImplicit(LLUnit<OTHER_UNIT, OTHER_STORAGE> other)
+	:	base_t(convert(other))
+	{}
+
+	// unlike LLUnit, LLUnitImplicit is *implicitly* convertable to a POD scalar (F32, S32, etc)
+	// this allows for interoperability with legacy code
+	operator storage_t() const
+	{
+		return base_t::value();
+	}
+};
+
+//
+// operator +
+//
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnit<UNIT_TYPE1, STORAGE_TYPE1> operator + (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator + (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator + (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator + (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator + (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result += second;
+	return result;
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator + (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result += second;
+	return result;
+}
+
+//
+// operator -
+//
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnit<UNIT_TYPE1, STORAGE_TYPE1> operator - (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator - (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator - (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	LLUnit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator - (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator - (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator - (SCALAR_TYPE first, LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> result(first);
+	result -= second;
+	return result;
+}
+
+//
+// operator *
+//
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator * (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	return LLUnit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first * second.value()));
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator * (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first.value() * second));
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnit<UNIT_TYPE1, STORAGE_TYPE1> operator * (LLUnit<UNIT_TYPE1, STORAGE_TYPE1>, LLUnit<UNIT_TYPE2, STORAGE_TYPE2>)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	llstatic_assert_template(STORAGE_TYPE1, false, "Multiplication of unit types results in new unit type - not supported.");
+	return LLUnit<UNIT_TYPE1, STORAGE_TYPE1>();
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator * (SCALAR_TYPE first, LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	return LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE>(first * second.value());
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator * (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE>(first.value() * second);
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> operator * (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1>, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2>)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	llstatic_assert_template(STORAGE_TYPE1, false, "Multiplication of unit types results in new unit type - not supported.");
+	return LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1>();
+}
+
+//
+// operator /
+//
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+SCALAR_TYPE operator / (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)
+{
+	return SCALAR_TYPE(first / second.value());
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnit<UNIT_TYPE, STORAGE_TYPE> operator / (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first.value() / second));
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+STORAGE_TYPE1 operator / (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	return STORAGE_TYPE1(first.value() / second.value());
+}
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>
+LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> operator / (LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)
+{
+	return LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE>((STORAGE_TYPE)(first.value() / second));
+}
+
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>
+STORAGE_TYPE1 operator / (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second)
+{
+	// spurious use of dependent type to stop gcc from triggering the static assertion before instantiating the template
+	return STORAGE_TYPE1(first.value() / second.value());
+}
+
+#define COMPARISON_OPERATORS(op)                                                                                     \
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>                                            \
+bool operator op (SCALAR_TYPE first, LLUnit<UNIT_TYPE, STORAGE_TYPE> second)                                         \
+{                                                                                                                    \
+	return first op second.value();                                                                                  \
+}                                                                                                                    \
+	                                                                                                                 \
+template<typename UNIT_TYPE, typename STORAGE_TYPE, typename SCALAR_TYPE>                                            \
+bool operator op (LLUnit<UNIT_TYPE, STORAGE_TYPE> first, SCALAR_TYPE second)                                         \
+{                                                                                                                    \
+	return first.value() op second;                                                                                  \
+}                                                                                                                    \
+	                                                                                                                 \
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>                   \
+bool operator op (LLUnitImplicit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnitImplicit<UNIT_TYPE2, STORAGE_TYPE2> second) \
+{                                                                                                                    \
+	return first.value() op first.convert(second);                                                                   \
+}                                                                                                                    \
+	                                                                                                                 \
+template<typename UNIT_TYPE1, typename STORAGE_TYPE1, typename UNIT_TYPE2, typename STORAGE_TYPE2>                   \
+	bool operator op (LLUnit<UNIT_TYPE1, STORAGE_TYPE1> first, LLUnit<UNIT_TYPE2, STORAGE_TYPE2> second)             \
+{                                                                                                                    \
+	return first.value() op first.convert(second);                                                                   \
+}
+
+COMPARISON_OPERATORS(<)
+COMPARISON_OPERATORS(<=)
+COMPARISON_OPERATORS(>)
+COMPARISON_OPERATORS(>=)
+COMPARISON_OPERATORS(==)
+COMPARISON_OPERATORS(!=)
+
+
+template<typename T> 
+struct LLGetUnitLabel
+{
+	static const char* getUnitLabel() { return ""; }
+};
+
+template<typename T, typename STORAGE_T>
+struct LLGetUnitLabel<LLUnit<T, STORAGE_T> >
+{
+	static const char* getUnitLabel() { return T::getUnitLabel(); }
+};
+
+//
+// Unit declarations
+//
+namespace LLUnits
+{
+template<typename T>
+T rawValue(T val) { return val; }
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE> 
+STORAGE_TYPE rawValue(LLUnit<UNIT_TYPE, STORAGE_TYPE> val) { return val.value(); }
+
+template<typename UNIT_TYPE, typename STORAGE_TYPE> 
+STORAGE_TYPE rawValue(LLUnitImplicit<UNIT_TYPE, STORAGE_TYPE> val) { return val.value(); }
+
+#define LL_DECLARE_DERIVED_UNIT(conversion_factor, base_unit_name, unit_name, unit_label)		\
+struct unit_name                                                                                \
+{                                                                                               \
+	typedef base_unit_name base_unit_t;                                                         \
+	static const char* getUnitLabel() { return unit_label; }									\
+};                                                                                              \
+template<typename STORAGE_TYPE>                                                                 \
+struct ConversionFactor<unit_name, base_unit_name, STORAGE_TYPE>                                \
+{                                                                                               \
+	static F64 get()                                                                            \
+	{                                                                                           \
+		return (F64)conversion_factor;                                                          \
+	}                                                                                           \
+};                                                                                              \
+	                                                                                            \
+template<typename STORAGE_TYPE>                                                                 \
+struct ConversionFactor<base_unit_name, unit_name, STORAGE_TYPE>						        \
+{                                                                                               \
+	static F64 get()                                                                            \
+	{                                                                                           \
+		return (F64)(1.0 / (conversion_factor));                                                \
+	}                                                                                           \
+}
+
+#define LL_DECLARE_BASE_UNIT(base_unit_name, unit_label) \
+struct base_unit_name { typedef base_unit_name base_unit_t; static const char* getUnitLabel() { return unit_label; }}
+
+LL_DECLARE_BASE_UNIT(Bytes, "B");
+LL_DECLARE_DERIVED_UNIT(1024, Bytes, Kibibytes, "KiB");
+LL_DECLARE_DERIVED_UNIT(1024 * 1024, Bytes, Mibibytes, "MiB");
+LL_DECLARE_DERIVED_UNIT(1024 * 1024 * 1024, Bytes, Gibibytes, "GiB");
+LL_DECLARE_DERIVED_UNIT(1.0 / 8.0, Bytes, Bits, "b");
+LL_DECLARE_DERIVED_UNIT(1024 / 8, Bytes, Kibibits, "Kib");
+LL_DECLARE_DERIVED_UNIT(1024 / 8, Bytes, Mibibits, "Mib");
+LL_DECLARE_DERIVED_UNIT(1024 * 1024 * 1024 / 8, Bytes, Gibibits, "Gib");
+
+LL_DECLARE_BASE_UNIT(Seconds, "s");
+LL_DECLARE_DERIVED_UNIT(60, Seconds, Minutes, "min");
+LL_DECLARE_DERIVED_UNIT(60 * 60, Seconds, Hours, "h");
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000.0, Seconds, Milliseconds, "ms");
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000000.0, Seconds, Microseconds, "\x09\x3cs");
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000000000.0, Seconds, Nanoseconds, "ns");
+
+LL_DECLARE_BASE_UNIT(Meters, "m");
+LL_DECLARE_DERIVED_UNIT(1000, Meters, Kilometers, "km");
+LL_DECLARE_DERIVED_UNIT(1.0 / 100.0, Meters, Centimeters, "cm");
+LL_DECLARE_DERIVED_UNIT(1.0 / 1000.0, Meters, Millimeters, "mm");
+
+LL_DECLARE_BASE_UNIT(Hertz, "Hz");
+LL_DECLARE_DERIVED_UNIT(1000, Hertz, Kilohertz, "KHz");
+LL_DECLARE_DERIVED_UNIT(1000 * 1000, Hertz, Megahertz, "MHz");
+LL_DECLARE_DERIVED_UNIT(1000 * 1000 * 1000, Hertz, Gigahertz, "GHz");
+
+LL_DECLARE_BASE_UNIT(Radians, "rad");
+LL_DECLARE_DERIVED_UNIT(DEG_TO_RAD, Radians, Degrees, "deg");
+
+
+} // namespace LLUnits
+
+#endif // LL_LLUNIT_H
diff --git a/indra/llcommon/lluuid.cpp b/indra/llcommon/lluuid.cpp
index 0aaa50d231..ba4b670b9a 100755
--- a/indra/llcommon/lluuid.cpp
+++ b/indra/llcommon/lluuid.cpp
@@ -27,9 +27,7 @@
 
 // We can't use WIN32_LEAN_AND_MEAN here, needs lots of includes.
 #if LL_WINDOWS
-#undef WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
+#include "llwin32headers.h"
 // ugh, this is ugly.  We need to straighten out our linking for this library
 #pragma comment(lib, "IPHLPAPI.lib")
 #include <iphlpapi.h>
diff --git a/indra/llcommon/lluuidhashmap.h b/indra/llcommon/lluuidhashmap.h
deleted file mode 100755
index e294670030..0000000000
--- a/indra/llcommon/lluuidhashmap.h
+++ /dev/null
@@ -1,583 +0,0 @@
-/** 
- * @file lluuidhashmap.h
- * @brief A uuid based hash map.
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLUUIDHASHMAP_H
-#define LL_LLUUIDHASHMAP_H
-
-#include "stdtypes.h"
-#include "llerror.h"
-#include "lluuid.h"
-
-// UUID hash map
-
-	/*
-	LLUUIDHashMap<uuid_pair, 32> foo(test_equals);
-	LLUUIDHashMapIter<uuid_pair, 32> bar(&foo);
-
-	LLDynamicArray<LLUUID> source_ids;
-	const S32 COUNT = 100000;
-	S32 q;
-	for (q = 0; q < COUNT; q++)
-	{
-		llinfos << "Creating" << llendl;
-		LLUUID id;
-		id.generate();
-		//llinfos << q << ":" << id << llendl;
-		uuid_pair pair;
-		pair.mUUID = id;
-		pair.mValue = q;
-		foo.set(id, pair);
-		source_ids.put(id);
-		//ms_sleep(1);
-	}
-
-	uuid_pair cur;
-	llinfos << "Iterating" << llendl;
-	for (cur = bar.first(); !bar.done(); cur = bar.next())
-	{
-		if (source_ids[cur.mValue] != cur.mUUID)
-		{
-			llerrs << "Incorrect value iterated!" << llendl;
-		}
-		//llinfos << cur.mValue << ":" << cur.mUUID << llendl;
-		//ms_sleep(1);
-	}
-
-	llinfos << "Finding" << llendl;
-	for (q = 0; q < COUNT; q++)
-	{
-		cur = foo.get(source_ids[q]);
-		if (source_ids[cur.mValue] != cur.mUUID)
-		{
-			llerrs << "Incorrect value found!" << llendl;
-		}
-		//llinfos << res.mValue << ":" << res.mUUID << llendl;
-		//ms_sleep(1);
-	}
-	
-	llinfos << "Removing" << llendl;
-	for (q = 0; q < COUNT/2; q++)
-	{
-		if (!foo.remove(source_ids[q]))
-		{
-			llerrs << "Remove failed!" << llendl;
-		}
-		//ms_sleep(1);
-	}
-
-	llinfos << "Iterating" << llendl;
-	for (cur = bar.first(); !bar.done(); cur = bar.next())
-	{
-		if (source_ids[cur.mValue] != cur.mUUID)
-		{
-			llerrs << "Incorrect value found!" << llendl;
-		}
-		//llinfos << cur.mValue << ":" << cur.mUUID << llendl;
-		//ms_sleep(1);
-	}
-	llinfos << "Done with UUID map test" << llendl;
-
-	return 0;
-	*/
-
-
-//
-// LLUUIDHashNode
-//
-
-template <class DATA, int SIZE>
-class LLUUIDHashNode
-{
-public:
-	LLUUIDHashNode();
-
-public:
-	S32 mCount;
-	U8	mKey[SIZE];
-	DATA mData[SIZE];
-	LLUUIDHashNode<DATA, SIZE> *mNextNodep;
-};
-
-
-//
-// LLUUIDHashNode implementation
-//
-template <class DATA, int SIZE>
-LLUUIDHashNode<DATA, SIZE>::LLUUIDHashNode()
-{
-	mCount = 0;
-	mNextNodep = NULL;
-}
-
-
-template <class DATA_TYPE, int SIZE>
-class LLUUIDHashMap
-{
-public:
-	// basic constructor including sorter
-	LLUUIDHashMap(BOOL (*equals)(const LLUUID &uuid, const DATA_TYPE &data),
-				  const DATA_TYPE &null_data);
-	~LLUUIDHashMap();
-
-	inline DATA_TYPE &get(const LLUUID &uuid);
-	inline BOOL check(const LLUUID &uuid) const;
-	inline DATA_TYPE &set(const LLUUID &uuid, const DATA_TYPE &type);
-	inline BOOL remove(const LLUUID &uuid);
-	void removeAll();
-
-	inline S32 getLength() const; // Warning, NOT O(1!)
-public:
-	BOOL (*mEquals)(const LLUUID &uuid, const DATA_TYPE &data);
-	LLUUIDHashNode<DATA_TYPE, SIZE> mNodes[256];
-
-	S32 mIterCount;
-protected:
-	DATA_TYPE mNull;
-};
-
-
-//
-// LLUUIDHashMap implementation
-//
-
-template <class DATA_TYPE, int SIZE>
-LLUUIDHashMap<DATA_TYPE, SIZE>::LLUUIDHashMap(BOOL (*equals)(const LLUUID &uuid, const DATA_TYPE &data),
-											  const DATA_TYPE &null_data)
-:	mEquals(equals),
-	mIterCount(0),
-	mNull(null_data)
-{ }
-
-template <class DATA_TYPE, int SIZE>
-LLUUIDHashMap<DATA_TYPE, SIZE>::~LLUUIDHashMap()
-{
-	removeAll();
-}
-
-template <class DATA_TYPE, int SIZE>
-void LLUUIDHashMap<DATA_TYPE, SIZE>::removeAll()
-{
-	S32 bin;
-	for (bin = 0; bin < 256; bin++)
-	{
-		LLUUIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[bin];
-
-		BOOL first = TRUE;
-		while (nodep)
-		{
-			S32 i;
-			const S32 count = nodep->mCount;
-
-			// Iterate through all members of this node
-			for (i = 0; i < count; i++)
-			{
-				nodep->mData[i] = mNull;
-			}
-
-			nodep->mCount = 0;
-			// Done with all objects in this node, go to the next.
-
-			LLUUIDHashNode<DATA_TYPE, SIZE>* curp = nodep;
-			nodep = nodep->mNextNodep;
-
-			// Delete the node if it's not the first node
-			if (first)
-			{
-				first = FALSE;
-				curp->mNextNodep = NULL;
-			}
-			else
-			{
-				delete curp;
-			}
-		}
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-inline S32 LLUUIDHashMap<DATA_TYPE, SIZE>::getLength() const
-{
-	S32 count = 0;
-	S32 bin;
-	for (bin = 0; bin < 256; bin++)
-	{
-		LLUUIDHashNode<DATA_TYPE, SIZE>* nodep = (LLUUIDHashNode<DATA_TYPE, SIZE>*) &mNodes[bin];
-		while (nodep)
-		{
-			count += nodep->mCount;
-			nodep = nodep->mNextNodep;
-		}
-	}
-	return count;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline DATA_TYPE &LLUUIDHashMap<DATA_TYPE, SIZE>::get(const LLUUID &uuid)
-{
-	LLUUIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[uuid.mData[0]];
-
-	// Grab the second byte of the UUID, which is the key for the node data
-	const S32 second_byte = uuid.mData[1];
-	while (nodep)
-	{
-		S32 i;
-		const S32 count = nodep->mCount;
-
-		// Iterate through all members of this node
-		for (i = 0; i < count; i++)
-		{
-			if ((nodep->mKey[i] == second_byte) && mEquals(uuid, nodep->mData[i]))
-			{
-				// The second byte matched, and our equality test passed.
-				// We found it.
-				return nodep->mData[i];
-			}
-		}
-
-		// Done with all objects in this node, go to the next.
-		nodep = nodep->mNextNodep;
-	}
-	return mNull;
-}
-
-
-template <class DATA_TYPE, int SIZE>
-inline BOOL LLUUIDHashMap<DATA_TYPE, SIZE>::check(const LLUUID &uuid) const
-{
-	const LLUUIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[uuid.mData[0]];
-
-	// Grab the second byte of the UUID, which is the key for the node data
-	const S32 second_byte = uuid.mData[1];
-	while (nodep)
-	{
-		S32 i;
-		const S32 count = nodep->mCount;
-
-		// Iterate through all members of this node
-		for (i = 0; i < count; i++)
-		{
-			if ((nodep->mKey[i] == second_byte) && mEquals(uuid, nodep->mData[i]))
-			{
-				// The second byte matched, and our equality test passed.
-				// We found it.
-				return TRUE;
-			}
-		}
-
-		// Done with all objects in this node, go to the next.
-		nodep = nodep->mNextNodep;
-	}
-
-	// Didn't find anything
-	return FALSE;
-}
-
-
-template <class DATA_TYPE, int SIZE>
-inline DATA_TYPE &LLUUIDHashMap<DATA_TYPE, SIZE>::set(const LLUUID &uuid, const DATA_TYPE &data)
-{
-	// Set is just like a normal find, except that if we find a match
-	// we replace it with the input value.
-	// If we don't find a match, we append to the end of the list.
-
-	LLUUIDHashNode<DATA_TYPE, SIZE>* nodep = &mNodes[uuid.mData[0]];
-
-	const S32 second_byte = uuid.mData[1];
-	while (1)
-	{
-		const S32 count = nodep->mCount;
-
-		S32 i;
-		for (i = 0; i < count; i++)
-		{
-			if ((nodep->mKey[i] == second_byte) && mEquals(uuid, nodep->mData[i]))
-			{
-				// We found a match for this key, replace the data with
-				// the incoming data.
-				nodep->mData[i] = data;
-				return nodep->mData[i];
-			}
-		}
-		if (!nodep->mNextNodep)
-		{
-			// We've iterated through all of the keys without finding a match
-			if (i < SIZE)
-			{
-				// There's still some space on this node, append
-				// the key and data to it.
-				nodep->mKey[i] = second_byte;
-				nodep->mData[i] = data;
-				nodep->mCount++;
-
-				return nodep->mData[i];
-			}
-			else
-			{
-				// This node is full, append a new node to the end.
-				nodep->mNextNodep = new LLUUIDHashNode<DATA_TYPE, SIZE>;
-				nodep->mNextNodep->mKey[0] = second_byte;
-				nodep->mNextNodep->mData[0] = data;
-				nodep->mNextNodep->mCount = 1;
-
-				return nodep->mNextNodep->mData[0];
-			}
-		}
-
-		// No match on this node, go to the next
-		nodep = nodep->mNextNodep;
-	}
-}
-
-
-template <class DATA_TYPE, int SIZE>
-inline BOOL LLUUIDHashMap<DATA_TYPE, SIZE>::remove(const LLUUID &uuid)
-{
-	if (mIterCount)
-	{
-		// We don't allow remove when we're iterating, it's bad karma!
-		llerrs << "Attempted remove while an outstanding iterator in LLUUIDHashMap!" << llendl;
-	}
-	// Remove is the trickiest operation.
-	// What we want to do is swap the last element of the last
-	// node if we find the one that we want to remove, but we have
-	// to deal with deleting the node from the tail if it's empty, but
-	// NOT if it's the only node left.
-
-	LLUUIDHashNode<DATA_TYPE, SIZE> *nodep = &mNodes[uuid.mData[0]];
-
-	// Not empty, we need to search through the nodes
-	const S32 second_byte = uuid.mData[1];
-
-	// A modification of the standard search algorithm.
-	while (nodep)
-	{
-		const S32 count = nodep->mCount;
-
-		S32 i;
-		for (i = 0; i < count; i++)
-		{
-			if ((nodep->mKey[i] == second_byte) && mEquals(uuid, nodep->mData[i]))
-			{
-				// We found the node that we want to remove.
-				// Find the last (and next-to-last) node, and the index of the last
-				// element.  We could conceviably start from the node we're on,
-				// but that makes it more complicated, this is easier.
-
-				LLUUIDHashNode<DATA_TYPE, SIZE> *prevp = &mNodes[uuid.mData[0]];
-				LLUUIDHashNode<DATA_TYPE, SIZE> *lastp = prevp;
-
-				// Find the last and next-to-last
-				while (lastp->mNextNodep)
-				{
-					prevp = lastp;
-					lastp = lastp->mNextNodep;
-				}
-
-				// First, swap in the last to the current location.
-				nodep->mKey[i] = lastp->mKey[lastp->mCount - 1];
-				nodep->mData[i] = lastp->mData[lastp->mCount - 1];
-
-				// Now, we delete the entry
-				lastp->mCount--;
-				lastp->mData[lastp->mCount] = mNull;
-
-				if (!lastp->mCount)
-				{
-					// We deleted the last element!
-					if (lastp != &mNodes[uuid.mData[0]])
-					{
-						// Only blitz the node if it's not the head
-						// Set the previous node to point to NULL, then
-						// blitz the empty last node
-						prevp->mNextNodep = NULL;
-						delete lastp;
-					}
-				}
-				return TRUE;
-			}
-		}
-
-		// Iterate to the next node, we've scanned all the entries in this one.
-		nodep = nodep->mNextNodep;
-	}
-	return FALSE;
-}
-
-
-//
-// LLUUIDHashMapIter
-//
-
-template <class DATA_TYPE, int SIZE>
-class LLUUIDHashMapIter
-{
-public:
-	LLUUIDHashMapIter(LLUUIDHashMap<DATA_TYPE, SIZE> *hash_mapp);
-	~LLUUIDHashMapIter();
-
-
-	inline void reset();
-	inline void first();
-	inline void next();
-	inline BOOL done() const;
-
-	DATA_TYPE& operator*() const
-	{
-		return mCurHashNodep->mData[mCurHashNodeKey];
-	}
-	DATA_TYPE* operator->() const
-	{
-		return &(operator*());
-	}
-
-protected:
-	LLUUIDHashMap<DATA_TYPE, SIZE> *mHashMapp;
-	LLUUIDHashNode<DATA_TYPE, SIZE> *mCurHashNodep;
-
-	S32 mCurHashMapNodeNum;
-	S32 mCurHashNodeKey;
-
-	DATA_TYPE mNull;
-};
-
-
-//
-// LLUUIDHashMapIter Implementation
-//
-template <class DATA_TYPE, int SIZE>
-LLUUIDHashMapIter<DATA_TYPE, SIZE>::LLUUIDHashMapIter(LLUUIDHashMap<DATA_TYPE, SIZE> *hash_mapp)
-{
-	mHashMapp = hash_mapp;
-	mCurHashNodep = NULL;
-	mCurHashMapNodeNum = 0;
-	mCurHashNodeKey = 0;
-}
-
-template <class DATA_TYPE, int SIZE>
-LLUUIDHashMapIter<DATA_TYPE, SIZE>::~LLUUIDHashMapIter()
-{
-	reset();
-}
-
-template <class DATA_TYPE, int SIZE>
-inline void LLUUIDHashMapIter<DATA_TYPE, SIZE>::reset()
-{
-	if (mCurHashNodep)
-	{
-		// We're partway through an iteration, we can clean up now
-		mHashMapp->mIterCount--;
-		mCurHashNodep = NULL;
-	}
-}
-
-template <class DATA_TYPE, int SIZE>
-inline void LLUUIDHashMapIter<DATA_TYPE, SIZE>::first()
-{
-	// Iterate through until we find the first non-empty node;
-	S32 i;
-	for (i = 0; i < 256; i++)
-	{
-		if (mHashMapp->mNodes[i].mCount)
-		{
-			if (!mCurHashNodep)
-			{
-				// Increment, since it's no longer safe for us to do a remove
-				mHashMapp->mIterCount++;
-			}
-
-			mCurHashNodep = &mHashMapp->mNodes[i];
-			mCurHashMapNodeNum = i;
-			mCurHashNodeKey = 0;
-			//return mCurHashNodep->mData[0];
-			return;
-		}
-	}
-
-	// Completely empty!
-	mCurHashNodep = NULL;
-	//return mNull;
-	return;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline BOOL LLUUIDHashMapIter<DATA_TYPE, SIZE>::done() const
-{
-	return mCurHashNodep ? FALSE : TRUE;
-}
-
-template <class DATA_TYPE, int SIZE>
-inline void LLUUIDHashMapIter<DATA_TYPE, SIZE>::next()
-{
-	// No current entry, this iterator is done
-	if (!mCurHashNodep)
-	{
-		//return mNull;
-		return;
-	}
-
-	// Go to the next element
-	mCurHashNodeKey++;
-	if (mCurHashNodeKey < mCurHashNodep->mCount)
-	{
-		// We're not done with this node, return the current element
-		//return mCurHashNodep->mData[mCurHashNodeKey];
-		return;
-	}
-
-	// Done with this node, move to the next
-	mCurHashNodep = mCurHashNodep->mNextNodep;
-	if (mCurHashNodep)
-	{
-		// Return the first element
-		mCurHashNodeKey = 0;
-		//return mCurHashNodep->mData[0];
-		return;
-	}
-
-	// Find the next non-empty node (keyed on the first byte)
-	mCurHashMapNodeNum++;
-
-	S32 i;
-	for (i = mCurHashMapNodeNum; i < 256; i++)
-	{
-		if (mHashMapp->mNodes[i].mCount)
-		{
-			// We found one that wasn't empty
-			mCurHashNodep = &mHashMapp->mNodes[i];
-			mCurHashMapNodeNum = i;
-			mCurHashNodeKey = 0;
-			//return mCurHashNodep->mData[0];
-			return;
-		}
-	}
-
-	// OK, we're done, nothing else to iterate
-	mCurHashNodep = NULL;
-	mHashMapp->mIterCount--; // Decrement since we're safe to do removes now
-	//return mNull;
-}
-
-#endif // LL_LLUUIDHASHMAP_H
diff --git a/indra/llcommon/reflective.cpp b/indra/llcommon/llwin32headers.h
index 2cc0e7e1f2..cf85067d95 100755..100644
--- a/indra/llcommon/reflective.cpp
+++ b/indra/llcommon/llwin32headers.h
@@ -1,10 +1,8 @@
 /** 
- * @file reflective.cpp
- * @author Babbage
- * @date 2006-05-15
- * @brief Implementation of LLReflective.
+ * @file llwindows.h
+ * @brief sanitized include of windows header files
  *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
  * 
@@ -26,15 +24,19 @@
  * $/LicenseInfo$
  */
 
-#include "linden_common.h" 
- 
-#include "reflective.h"
+#ifndef LL_LLWINDOWS_H
+#define LL_LLWINDOWS_H
 
-LLReflective::LLReflective()
-{
-}
+#ifdef LL_WINDOWS
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#undef WIN32_LEAN_AND_MEAN
+#include <winsock2.h>
+#include <windows.h>
+// reset to default, which is lean
+#define WIN32_LEAN_AND_MEAN
+#undef NOMINMAX
+#endif
 
-//virtual 
-LLReflective::~LLReflective()
-{
-}
+#endif
diff --git a/indra/llcommon/lldarrayptr.h b/indra/llcommon/llwin32headerslean.h
index c9a0b204d1..f7e71301a8 100755..100644
--- a/indra/llcommon/lldarrayptr.h
+++ b/indra/llcommon/llwin32headerslean.h
@@ -1,6 +1,6 @@
 /** 
- * @file lldarrayptr.h
- * @brief Wrapped std::vector for backward compatibility.
+ * @file llwindows.h
+ * @brief sanitized include of windows header files
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -23,14 +23,18 @@
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
-#ifndef LL_LLDARRAYPTR_H
-#define LL_LLDARRAYPTR_H
 
-#include "lldarray.h"
+#ifndef LL_LLWINDOWS_H
+#define LL_LLWINDOWS_H
 
-template <class Type, int BlockSize = 32> 
-class LLDynamicArrayPtr : public LLDynamicArray<Type, BlockSize>
-{
-};
+#ifdef LL_WINDOWS
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#define WIN32_LEAN_AND_MEAN
+#include <winsock2.h>
+#include <windows.h>
+#undef NOMINMAX
+#endif
 
-#endif // LL_LLDARRAYPTR_H
+#endif
diff --git a/indra/llcommon/llworkerthread.h b/indra/llcommon/llworkerthread.h
index be46394d6e..09776816a8 100755
--- a/indra/llcommon/llworkerthread.h
+++ b/indra/llcommon/llworkerthread.h
@@ -26,10 +26,11 @@
 #ifndef LL_LLWORKERTHREAD_H
 #define LL_LLWORKERTHREAD_H
 
-#include <queue>
-#include <string>
+#include <list>
 #include <map>
+#include <queue>
 #include <set>
+#include <string>
 
 #include "llqueuedthread.h"
 #include "llapr.h"
diff --git a/indra/llcommon/metaclass.cpp b/indra/llcommon/metaclass.cpp
deleted file mode 100755
index 5e403511cf..0000000000
--- a/indra/llcommon/metaclass.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-/** 
- * @file metaclass.cpp
- * @author Babbage
- * @date 2006-05-15
- * @brief Implementation of LLMetaClass
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h" 
-
-#include "metaclass.h"
-
-#include "metaproperty.h"
-#include "reflective.h"
-
-LLMetaClass::LLMetaClass()
-{
-}
-
-//virtual 
-LLMetaClass::~LLMetaClass()
-{
-}
-
-const LLMetaProperty* LLMetaClass::findProperty(const std::string& name) const
-{
-	PropertyIterator iter = mProperties.find(name);
-	if(iter == mProperties.end())
-	{
-		return NULL;
-	}
-	return (*iter).second;
-}
-
-void LLMetaClass::addProperty(const LLMetaProperty* property)
-{
-	mProperties.insert(std::make_pair(property->getName(), property));
-}
-
-U32 LLMetaClass::getPropertyCount() const
-{
-	return mProperties.size();
-}
-
-LLMetaClass::PropertyIterator LLMetaClass::beginProperties() const
-{
-	return mProperties.begin();
-}
-
-LLMetaClass::PropertyIterator LLMetaClass::endProperties() const
-{
-	return mProperties.end();
-}
-
-bool LLMetaClass::isInstance(const LLReflective* object) const
-{
-	// TODO: Babbage: Search through super classes of objects MetaClass.
-	const LLMetaClass* object_meta_class = &(object->getMetaClass());
-	return (object_meta_class == this);
-}
-
diff --git a/indra/llcommon/metaclass.h b/indra/llcommon/metaclass.h
deleted file mode 100755
index 626757d58d..0000000000
--- a/indra/llcommon/metaclass.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/** 
- * @file metaclass.h
- * @author Babbage
- * @date 2006-05-15
- * @brief Reflective meta information describing a class.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_METACLASS_H
-#define LL_METACLASS_H
-
-#include <string>
-#include <map>
-
-#include "stdtypes.h"
-
-class LLReflective;
-class LLMetaProperty;
-class LLMetaMethod;
-class LL_COMMON_API LLMetaClass
-{
-public:
-
-	LLMetaClass();
-	virtual ~LLMetaClass();
-  
-	// Create instance of this MetaClass. NULL if class is abstract. 
-	// Gives ownership of returned object.
-	// virtual LLReflective* create() const = 0;
-  
-	// Returns named property or NULL.
-	const LLMetaProperty* findProperty(const std::string& name) const;
-  
-	// Add property to metaclass. Takes ownership of given property.
-	void addProperty(const LLMetaProperty* property);
-	
-	typedef std::map<std::string, const LLMetaProperty*>::const_iterator PropertyIterator;
-	
-	U32 getPropertyCount() const;
-	
-	PropertyIterator beginProperties() const;
-	PropertyIterator endProperties() const;
-  
-	// Returns named property or NULL.
-	// const LLMetaMethod* findMethod(const std::string& name) const;
-  
-	// Add method to metaclass. Takes ownership of given method.
-	// void addMethod(const LLMetaMethod* method);
-  
-	// Find MetaClass by name. NULL if name is unknown.
-	// static LLMetaClass* findClass(const std::string& name);
-	
-	// True if object is instance of this meta class.
-	bool isInstance(const LLReflective* object) const;
-  
-private:
-
-	typedef std::map<std::string, const LLMetaProperty*> PropertyMap;
-	PropertyMap mProperties;
-};
-
-#endif // LL_METACLASS_H
diff --git a/indra/llcommon/metaclasst.h b/indra/llcommon/metaclasst.h
deleted file mode 100755
index b9a7ae219d..0000000000
--- a/indra/llcommon/metaclasst.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/** 
- * @file metaclasst.h
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_METACLASST_H
-#define LL_METACLASST_H
-
-#include "metaclass.h"
-
-template<class TObject>
-class LLMetaClassT : public LLMetaClass
-{
-	public:
-		
-		virtual ~LLMetaClassT() {;}
-		
-		static const LLMetaClassT& instance()
-		{
-			static const LLMetaClassT& instance = buildMetaClass();
-			return instance;
-		}
-	
-	private:
-	
-		static const LLMetaClassT& buildMetaClass()
-		{
-			LLMetaClassT& meta_class = *(new LLMetaClassT());
-			reflectProperties(meta_class);
-			return meta_class;
-		}
-	
-		LLMetaClassT() {;}
-	
-		static void reflectProperties(LLMetaClass&)
-		{
-		}
-};
-
-#endif // LL_METACLASST_H
diff --git a/indra/llcommon/metaproperty.cpp b/indra/llcommon/metaproperty.cpp
deleted file mode 100755
index 98d850bf1e..0000000000
--- a/indra/llcommon/metaproperty.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-/** 
- * @file metaproperty.cpp
- * @author Babbage
- * @date 2006-05-15
- * @brief Implementation of LLMetaProperty.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h" 
-
-#include "metaproperty.h"
-
-#include "metaclass.h"
-
-LLMetaProperty::LLMetaProperty(const std::string& name, const LLMetaClass& object_class) : 
-	mName(name), mObjectClass(object_class) 
-{
-}
-
-//virtual 
-LLMetaProperty::~LLMetaProperty()
-{
-}
-
-const LLMetaClass& LLMetaProperty::getObjectMetaClass() const
-{
-	return mObjectClass;
-}
-
-void LLMetaProperty::checkObjectClass(const LLReflective* object) const
-{
-	if(! mObjectClass.isInstance(object))
-	{
-		throw "class cast exception";
-	}
-}
diff --git a/indra/llcommon/metaproperty.h b/indra/llcommon/metaproperty.h
deleted file mode 100755
index bd5bb1a30f..0000000000
--- a/indra/llcommon/metaproperty.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/** 
- * @file metaproperty.h
- * @author Babbage
- * @date 2006-05-15
- * @brief Reflective meta information describing a property of a class.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_METAPROPERTY_H
-#define LL_METAPROPERTY_H
-
-#include "stdtypes.h"
-#include "llsd.h"
-#include "reflective.h"
-
-class LLMetaClass;
-class LLReflective;
-class LL_COMMON_API LLMetaProperty
-{
-public:
-	LLMetaProperty(const std::string& name, const LLMetaClass& object_class);
-  virtual ~LLMetaProperty();
-  
-  // Get property name.
-  const std::string& getName() const {return mName;}
-
-  // Get value of this property.
-  virtual const LLReflective* get(const LLReflective* object) const = 0;
-  
-  // Set value of this property.
-  // virtual void set(LLReflective* object, const LLReflective* value) = 0;
-  
-  // Get value of this property as LLSD. Default returns undefined LLSD.
-  virtual LLSD getLLSD(const LLReflective* object) const = 0;
-  
-  // Get the MetaClass of legal values of this property.
-  // const LLMetaClass& getValueMetaClass();
-  
-  // Get the meta class that this property is a member of.
-  const LLMetaClass& getObjectMetaClass() const;
-
-protected:
-
-  // Check object is instance of object class, throw exception if not.
-  void checkObjectClass(const LLReflective* object) const;
-
-private:
-
-	std::string mName;
-	const LLMetaClass& mObjectClass;
-};
-
-#endif // LL_METAPROPERTY_H
diff --git a/indra/llcommon/metapropertyt.h b/indra/llcommon/metapropertyt.h
deleted file mode 100755
index 7a36c161da..0000000000
--- a/indra/llcommon/metapropertyt.h
+++ /dev/null
@@ -1,183 +0,0 @@
-/** 
- * @file metapropertyt.h
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_METAPROPERTYT_H
-#define LL_METAPROPERTYT_H
-
-#include "llsd.h"
-#include "llstring.h"
-#include "metaclasst.h"
-#include "metaproperty.h"
-#include "reflectivet.h"
-
-template<class TProperty>
-class LLMetaPropertyT : public LLMetaProperty
-{
-public:
-	
-	virtual ~LLMetaPropertyT() {;}
-	
-	// Get value of this property. Gives ownership of returned value.
-	virtual const LLReflective* get(const LLReflective* object) const
-	{
-		checkObjectClass(object);
-		return getProperty(object);
-	}
-  
-	// Set value of this property.
-	/*virtual void set(LLReflective* object, const LLReflective* value)
-	{
-		// TODO: Babbage: Check types.
-		ref(object) = static_cast<const LLReflectiveT<TProperty>* >(value)->getValue();
-	}*/
-	
-	// Get value of this property as LLSD.
-	virtual LLSD getLLSD(const LLReflective* object) const
-	{
-		return LLSD();
-	}
-
-protected:
-
-	LLMetaPropertyT(const std::string& name, const LLMetaClass& object_class) : LLMetaProperty(name, object_class) {;}
-
-	virtual const TProperty* getProperty(const LLReflective* object) const = 0;
-};
-
-template <>
-inline const LLReflective* LLMetaPropertyT<S32>::get(const LLReflective* object) const
-{
-	checkObjectClass(object);
-	return NULL;
-}
-
-template <>
-inline const LLReflective* LLMetaPropertyT<std::string>::get(const LLReflective* object) const
-{
-	checkObjectClass(object);
-	return NULL;
-}
-
-template <>
-inline const LLReflective* LLMetaPropertyT<LLUUID>::get(const LLReflective* object) const
-{
-	checkObjectClass(object);
-	return NULL;
-}
-
-template <>
-inline const LLReflective* LLMetaPropertyT<bool>::get(const LLReflective* object) const
-{
-	checkObjectClass(object);
-	return NULL;
-}
-
-template <>
-inline LLSD LLMetaPropertyT<S32>::getLLSD(const LLReflective* object) const
-{
-	return *(getProperty(object));
-}
-
-template <>
-inline LLSD LLMetaPropertyT<std::string>::getLLSD(const LLReflective* object) const
-{
-	return *(getProperty(object));
-}
-
-template <>
-inline LLSD LLMetaPropertyT<LLUUID>::getLLSD(const LLReflective* object) const
-{
-	return *(getProperty(object));
-}
-
-template <>
-inline LLSD LLMetaPropertyT<bool>::getLLSD(const LLReflective* object) const
-{
-	return *(getProperty(object));
-}
-
-template<class TObject, class TProperty>
-class LLMetaPropertyTT : public LLMetaPropertyT<TProperty>
-{
-public:
-
-	LLMetaPropertyTT(const std::string& name, const LLMetaClass& object_class, TProperty (TObject::*property)) : 
-	  LLMetaPropertyT<TProperty>(name, object_class), mProperty(property) {;}
-
-protected:
-
-	// Get void* to property.
-	virtual const TProperty* getProperty(const LLReflective* object) const
-	{
-		const TObject* typed_object = static_cast<const TObject*>(object);
-		return &(typed_object->*mProperty);
-	};
-
-private:
-
-	TProperty (TObject::*mProperty);
-};
-
-template<class TObject, class TProperty>
-class LLMetaPropertyPtrTT : public LLMetaPropertyT<TProperty>
-{
-public:
-
-	LLMetaPropertyPtrTT(const std::string& name, const LLMetaClass& object_class, TProperty* (TObject::*property)) : 
-	  LLMetaPropertyT<TProperty>(name, object_class), mProperty(property) {;}
-
-protected:
-
-	// Get void* to property.
-	virtual const TProperty* getProperty(const LLReflective* object) const
-	{
-		const TObject* typed_object = static_cast<const TObject*>(object);
-		return typed_object->*mProperty;
-	};
-
-private:
-
-	TProperty* (TObject::*mProperty);
-};
-
-// Utility function to simplify the registration of members.
-template<class TObject, class TProperty>
-void reflectProperty(LLMetaClass& meta_class, const std::string& name, TProperty (TObject::*property))
-{
-	typedef LLMetaPropertyTT<TObject, TProperty> PropertyType;
-	const LLMetaProperty* meta_property = new PropertyType(name, meta_class, property);
-	meta_class.addProperty(meta_property);
-}
-
-// Utility function to simplify the registration of ptr properties.
-template<class TObject, class TProperty>
-void reflectPtrProperty(LLMetaClass& meta_class, const std::string& name, TProperty* (TObject::*property))
-{
-	typedef LLMetaPropertyPtrTT<TObject, TProperty> PropertyType;
-	const LLMetaProperty* meta_property = new PropertyType(name, meta_class, property);
-	meta_class.addProperty(meta_property);
-}
-
-#endif // LL_METAPROPERTYT_H
diff --git a/indra/llcommon/reflective.h b/indra/llcommon/reflective.h
deleted file mode 100755
index da5c5a2630..0000000000
--- a/indra/llcommon/reflective.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/** 
- * @file reflective.h
- * @author Babbage
- * @date 2006-05-15
- * @brief Interface that must be implemented by all reflective classes.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_REFLECTIVE_H
-#define LL_REFLECTIVE_H
-
-class LLMetaClass;
-class LL_COMMON_API LLReflective
-{
-public:
-	LLReflective();
-	virtual ~LLReflective();
-	
-	virtual const LLMetaClass& getMetaClass() const = 0;
-};
-
-#endif // LL_REFLECTIVE_H
diff --git a/indra/llcommon/reflectivet.h b/indra/llcommon/reflectivet.h
deleted file mode 100755
index 958921f23e..0000000000
--- a/indra/llcommon/reflectivet.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/** 
- * @file reflectivet.h
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_REFLECTIVET_H
-#define LL_REFLECTIVET_H
-
-#include "reflective.h"
-
-template <class T>
-class LLReflectiveT : public LLReflective
-{
-public:
-
-	LLReflectiveT(const T& value) : mValue(value) {;}
-	virtual ~LLReflectiveT() {;}
-	
-	virtual const LLMetaClass& getMetaClass() const {return LLMetaClassT<LLReflectiveT<T> >::instance();}
-	
-	const T& getValue() const {return mValue;}
-	
-private:
-
-	T mValue;
-};
-
-#endif
diff --git a/indra/llcommon/tests/llunits_test.cpp b/indra/llcommon/tests/llunits_test.cpp
new file mode 100644
index 0000000000..2a941e8229
--- /dev/null
+++ b/indra/llcommon/tests/llunits_test.cpp
@@ -0,0 +1,208 @@
+/** 
+ * @file llsingleton_test.cpp
+ * @date 2011-08-11
+ * @brief Unit test for the LLSingleton class
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llunit.h"
+#include "../test/lltut.h"
+
+namespace LLUnits
+{
+	// using powers of 2 to allow strict floating point equality
+	struct Quatloos { typedef Quatloos base_unit_t; };
+	LL_DECLARE_DERIVED_UNIT(4, Quatloos, Latinum);
+	LL_DECLARE_DERIVED_UNIT((1.0 / 4.0), Quatloos, Solari);
+}
+
+namespace tut
+{
+	using namespace LLUnits;
+	struct units
+	{
+	};
+
+	typedef test_group<units> units_t;
+	typedef units_t::object units_object_t;
+	tut::units_t tut_singleton("LLUnit");
+
+	// storage type conversions
+	template<> template<>
+	void units_object_t::test<1>()
+	{
+		LLUnit<Quatloos, F32> float_quatloos;
+		ensure(float_quatloos.value() == 0.f);
+
+		LLUnit<Quatloos, S32> int_quatloos;
+		ensure(int_quatloos.value() == 0);
+
+		int_quatloos = 42;
+		ensure(int_quatloos.value() == 42);
+		float_quatloos = int_quatloos;
+		ensure(float_quatloos.value() == 42.f);
+
+		int_quatloos = float_quatloos;
+		ensure(int_quatloos.value() == 42);
+
+		float_quatloos = 42.1f;
+		ensure(float_quatloos.value() == 42.1f);
+		int_quatloos = float_quatloos;
+		ensure(int_quatloos.value() == 42);
+		LLUnit<Quatloos, U32> unsigned_int_quatloos(float_quatloos);
+		ensure(unsigned_int_quatloos.value() == 42);
+	}
+
+	// conversions to/from base unit
+	template<> template<>
+	void units_object_t::test<2>()
+	{
+		LLUnit<Quatloos, F32> quatloos(1.f);
+		ensure(quatloos.value() == 1.f);
+		LLUnit<Latinum, F32> latinum_bars(quatloos);
+		ensure(latinum_bars.value() == 1.f / 4.f);
+
+		latinum_bars = 256;
+		quatloos = latinum_bars;
+		ensure(quatloos.value() == 1024);
+
+		LLUnit<Solari, F32> solari(quatloos);
+		ensure(solari.value() == 4096);
+	}
+
+	// conversions across non-base units
+	template<> template<>
+	void units_object_t::test<3>()
+	{
+		LLUnit<Solari, F32> solari = 4.f;
+		LLUnit<Latinum, F32> latinum_bars = solari;
+		ensure(latinum_bars.value() == 0.25f);
+	}
+
+	// math operations
+	template<> template<>
+	void units_object_t::test<4>()
+	{
+		LLUnit<Quatloos, F32> quatloos = 1.f;
+		quatloos *= 4.f;
+		ensure(quatloos.value() == 4);
+		quatloos = quatloos * 2;
+		ensure(quatloos.value() == 8);
+		quatloos = 2.f * quatloos;
+		ensure(quatloos.value() == 16);
+
+		quatloos += 4.f;
+		ensure(quatloos.value() == 20);
+		quatloos += 4;
+		ensure(quatloos.value() == 24);
+		quatloos = quatloos + 4;
+		ensure(quatloos.value() == 28);
+		quatloos = 4 + quatloos;
+		ensure(quatloos.value() == 32);
+		quatloos += quatloos * 3;
+		ensure(quatloos.value() == 128);
+
+		quatloos -= quatloos / 4 * 3;
+		ensure(quatloos.value() == 32);
+		quatloos = quatloos - 8;
+		ensure(quatloos.value() == 24);
+		quatloos -= 4;
+		ensure(quatloos.value() == 20);
+		quatloos -= 4.f;
+		ensure(quatloos.value() == 16);
+
+		quatloos *= 2.f;
+		ensure(quatloos.value() == 32);
+		quatloos = quatloos * 2.f;
+		ensure(quatloos.value() == 64);
+		quatloos = 0.5f * quatloos;
+		ensure(quatloos.value() == 32);
+
+		quatloos /= 2.f;
+		ensure(quatloos.value() == 16);
+		quatloos = quatloos / 4;
+		ensure(quatloos.value() == 4);
+
+		F32 ratio = quatloos / LLUnit<Quatloos, F32>(4.f);
+		ensure(ratio == 1);
+
+		quatloos += LLUnit<Solari, F32>(4.f);
+		ensure(quatloos.value() == 5);
+		quatloos -= LLUnit<Latinum, F32>(1.f);
+		ensure(quatloos.value() == 1);
+	}
+
+	// implicit units
+	template<> template<>
+	void units_object_t::test<5>()
+	{
+		// 0-initialized
+		LLUnit<Quatloos, F32> quatloos(0);
+		// initialize implicit unit from explicit
+		LLUnitImplicit<Quatloos, F32> quatloos_implicit = quatloos + 1;
+		ensure(quatloos_implicit.value() == 1);
+
+		// assign implicit to explicit, or perform math operations
+		quatloos = quatloos_implicit;
+		ensure(quatloos.value() == 1);
+		quatloos += quatloos_implicit;
+		ensure(quatloos.value() == 2);
+
+		// math operations on implicits
+		quatloos_implicit = 1;
+		ensure(quatloos_implicit == 1);
+
+		quatloos_implicit += 2;
+		ensure(quatloos_implicit == 3);
+
+		quatloos_implicit *= 2;
+		ensure(quatloos_implicit == 6);
+
+		quatloos_implicit -= 1;
+		ensure(quatloos_implicit == 5);
+
+		quatloos_implicit /= 5;
+		ensure(quatloos_implicit == 1);
+
+		quatloos_implicit = quatloos_implicit + 3 + quatloos_implicit;
+		ensure(quatloos_implicit == 5);
+
+		quatloos_implicit = 10 - quatloos_implicit - 1;
+		ensure(quatloos_implicit == 4);
+
+		quatloos_implicit = 2 * quatloos_implicit * 2;
+		ensure(quatloos_implicit == 16);
+
+		F32 one_half = quatloos_implicit / (quatloos_implicit * 2);
+		ensure(one_half == 0.5f);
+
+		// implicit conversion to POD
+		F32 float_val = quatloos_implicit;
+		ensure(float_val == 16);
+
+		S32 int_val = quatloos_implicit;
+		ensure(int_val == 16);
+	}
+}
diff --git a/indra/llcommon/tests/reflection_test.cpp b/indra/llcommon/tests/reflection_test.cpp
deleted file mode 100755
index 8980ebb1f1..0000000000
--- a/indra/llcommon/tests/reflection_test.cpp
+++ /dev/null
@@ -1,220 +0,0 @@
-/** 
- * @file reflection_test.cpp
- * @date   May 2006
- * @brief Reflection unit tests.
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "../linden_common.h"
-#include "../reflective.h"
-#include "../metaclasst.h"
-#include "../metapropertyt.h"
-#include "../stdtypes.h"
-
-#include "../test/lltut.h"
-
-namespace tut
-{
-  class TestAggregatedData : public LLReflective
-  {
-  public:
-	TestAggregatedData() {;}
-	virtual const LLMetaClass& getMetaClass() const;
-  
-  private:
-  };
-  
-  class TestReflectionData : public LLReflective
-  {
-  public:
-	TestReflectionData() : mInt(42), mString("foo"), mNullPtr(NULL), mPtr(new TestAggregatedData()), mRef(*(new TestAggregatedData)) {;}
-	virtual ~TestReflectionData() {delete mPtr;}
-	virtual const LLMetaClass& getMetaClass() const;
-	
-	static U32 getPropertyCount() {return 5;}
-	
-  private:
-  
-	friend class LLMetaClassT<TestReflectionData>;
-    S32 mInt;
-	std::string mString;
-	TestAggregatedData* mNullPtr;
-	TestAggregatedData* mPtr;
-	TestAggregatedData mObj;
-	TestAggregatedData& mRef;
-  };
-}
-
-template <>
-void LLMetaClassT<tut::TestReflectionData>::reflectProperties(LLMetaClass& meta_class)
-{
-	reflectProperty(meta_class, "mInt", &tut::TestReflectionData::mInt);
-	reflectProperty(meta_class, "mString", &tut::TestReflectionData::mString);
-	reflectPtrProperty(meta_class, "mNullPtr", &tut::TestReflectionData::mNullPtr);
-	reflectPtrProperty(meta_class, "mPtr", &tut::TestReflectionData::mPtr);
-	reflectProperty(meta_class, "mObj", &tut::TestReflectionData::mObj);
-	//reflectProperty(meta_class, "mRef", &tut::TestReflectionData::mRef); // AARGH!
-}
-
-namespace tut
-{
-	// virtual
-	const LLMetaClass& TestReflectionData::getMetaClass() const
-	{
-	   return LLMetaClassT<TestReflectionData>::instance();
-    }
-	
-	const LLMetaClass& TestAggregatedData::getMetaClass() const
-	{
-	   return LLMetaClassT<TestAggregatedData>::instance();
-    }
-}
-
-namespace tut
-{
-  typedef tut::test_group<TestReflectionData> TestReflectionGroup;
-  typedef TestReflectionGroup::object TestReflectionObject;
-  TestReflectionGroup gTestReflectionGroup("reflection");
-
-  template<> template<>
-  void TestReflectionObject::test<1>()
-  {
-	// Check properties can be found.
-    const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	const LLMetaProperty* null = NULL;
-	ensure_not_equals(meta_class.findProperty("mInt"), null);
-	ensure_not_equals(meta_class.findProperty("mString"), null);
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<2>()
-  {
-	// Check non-existent property cannot be found.
-    const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	const LLMetaProperty* null = NULL;
-	ensure_equals(meta_class.findProperty("foo"), null);
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<3>()
-  {
-	// Check integer property has correct value.	
-    const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	ensure_equals(meta_class.findProperty("mInt")->getLLSD(this).asInteger(), 42);
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<4>()
-  {
-	// Check string property has correct value.	
-    const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	ensure_equals(meta_class.findProperty("mString")->getLLSD(this).asString(), std::string("foo"));
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<5>()
-  {
-	// Check NULL reference property has correct value.
-	const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	const LLReflective* null = NULL;
-	ensure_equals(meta_class.findProperty("mNullPtr")->get(this), null);
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<6>()
-  {
-	// Check reference property has correct value.
-	const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	const LLReflective* null = NULL;
-	const LLReflective* ref = meta_class.findProperty("mPtr")->get(this);
-	ensure_not_equals(ref, null);
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<7>()
-  {
-	// Check reflective property has correct value.
-	const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	const LLReflective* null = NULL;
-	const LLReflective* ref = meta_class.findProperty("mObj")->get(this);
-	ensure_not_equals(ref, null);
-  }
-
-  template<> template<>
-  void TestReflectionObject::test<8>()
-  {
-	// Check property count.
-    const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	ensure_equals(meta_class.getPropertyCount(), TestReflectionData::getPropertyCount());
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<9>()
-  {
-	// Check property iteration.
-    const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	U32 count = 0;
-	LLMetaClass::PropertyIterator iter;
-	for(iter = meta_class.beginProperties(); iter != meta_class.endProperties(); ++iter)
-	{
-		++count;
-	}
-	ensure_equals(count, TestReflectionData::getPropertyCount());
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<10>()
-  {
-	// Check meta classes of different types do not compare equal.
-	const LLMetaClass* reflection_data_meta_class = &(LLMetaClassT<TestReflectionData>::instance());
-	const LLMetaClass* aggregated_data_meta_class = &(LLMetaClassT<TestAggregatedData>::instance());
-	ensure_not_equals(reflection_data_meta_class, aggregated_data_meta_class);
-  }
-  
-  template<> template<>
-  void TestReflectionObject::test<11>()
-  {
-	// Check class cast checks.
-	const LLMetaClass& meta_class = LLMetaClassT<TestReflectionData>::instance();
-	TestAggregatedData* aggregated_data = new TestAggregatedData();
-	LLMetaClass::PropertyIterator iter;
-	U32 exception_count = 0;
-	for(iter = meta_class.beginProperties(); iter != meta_class.endProperties(); ++iter)
-	{
-		try
-		{
-			const LLMetaProperty* property = (*iter).second;
-			const LLReflective* reflective = property->get(aggregated_data); // Wrong reflective type, should throw exception.
-
-			// useless op to get rid of compiler warning.
-			reflective = reflective;
-		}
-		catch(...)
-		{
-			++exception_count;
-		}
-	}
-	ensure_equals(exception_count, getPropertyCount());
-	
-  }
-}