merge from http://hg.secondlife.com/viewer-development

24 files changed, 1123 insertions, 23 deletions

diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 858e483036..9342a22d46 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -33,6 +33,7 @@ set(llcommon_SOURCE_FILES
     llapp.cpp
     llapr.cpp
     llassettype.cpp
+    llavatarname.cpp
     llbase32.cpp
     llbase64.cpp
     llcommon.cpp
@@ -69,6 +70,7 @@ set(llcommon_SOURCE_FILES
     llmemorystream.cpp
     llmemtype.cpp
     llmetrics.cpp
+    llmetricperformancetester.cpp
     llmortician.cpp
     lloptioninterface.cpp
     llptrto.cpp 
@@ -91,6 +93,7 @@ set(llcommon_SOURCE_FILES
     llstringtable.cpp
     llsys.cpp
     llthread.cpp
+    llthreadsafequeue.cpp
     lltimer.cpp
     lluri.cpp
     lluuid.cpp
@@ -115,6 +118,7 @@ set(llcommon_HEADER_FILES
     llallocator.h
     llallocator_heap_profile.h
     llagentconstants.h
+    llavatarname.h
     llapp.h
     llapr.h
     llassettype.h
@@ -184,6 +188,7 @@ set(llcommon_HEADER_FILES
     llmemorystream.h
     llmemtype.h
     llmetrics.h
+    llmetricperformancetester.h
     llmortician.h
     llnametable.h
     lloptioninterface.h
@@ -221,6 +226,7 @@ set(llcommon_HEADER_FILES
     llstringtable.h
     llsys.h
     llthread.h
+    llthreadsafequeue.h
     lltimer.h
     lltreeiterators.h
     lluri.h
@@ -252,8 +258,15 @@ set_source_files_properties(${llcommon_HEADER_FILES}
 list(APPEND llcommon_SOURCE_FILES ${llcommon_HEADER_FILES})
 
 if(LLCOMMON_LINK_SHARED)
-    add_library (llcommon SHARED ${llcommon_SOURCE_FILES})
-    ll_stage_sharedlib(llcommon)
+  add_library (llcommon SHARED ${llcommon_SOURCE_FILES})
+  if(NOT WORD_SIZE EQUAL 32)
+    if(WINDOWS)
+      add_definitions(/FIXED:NO)
+    else(WINDOWS) # not windows therefore gcc LINUX and DARWIN
+      add_definitions(-fPIC)
+    endif(WINDOWS)
+  endif(NOT WORD_SIZE EQUAL 32)
+  ll_stage_sharedlib(llcommon)
 else(LLCOMMON_LINK_SHARED)
     add_library (llcommon ${llcommon_SOURCE_FILES})
 endif(LLCOMMON_LINK_SHARED)
diff --git a/indra/llcommon/indra_constants.h b/indra/llcommon/indra_constants.h
index b0618bfe59..95cb606240 100644
--- a/indra/llcommon/indra_constants.h
+++ b/indra/llcommon/indra_constants.h
@@ -245,9 +245,6 @@ const U8 SIM_ACCESS_ADULT	= 42;		// Seriously Adult Only
 const U8 SIM_ACCESS_DOWN	= 254;
 const U8 SIM_ACCESS_MAX 	= SIM_ACCESS_ADULT;
 
-// group constants
-const S32 MAX_AGENT_GROUPS = 25;
-
 // attachment constants
 const S32 MAX_AGENT_ATTACHMENTS = 38;
 const U8  ATTACHMENT_ADD = 0x80;
@@ -300,6 +297,14 @@ const U32 START_LOCATION_ID_COUNT 		= 6;
 // group constants
 const U32 GROUP_MIN_SIZE = 2;
 
+// gMaxAgentGroups is now sent by login.cgi, which
+// looks it up from globals.xml.
+//
+// For now we need an old default value however,
+// so the viewer can be deployed ahead of login.cgi.
+//
+const S32 DEFAULT_MAX_AGENT_GROUPS = 25;
+
 // radius within which a chat message is fully audible
 const F32 CHAT_WHISPER_RADIUS = 10.f;
 const F32 CHAT_NORMAL_RADIUS = 20.f;
diff --git a/indra/llcommon/llapp.cpp b/indra/llcommon/llapp.cpp
index eebd5ed0a6..39daefd1ad 100644
--- a/indra/llcommon/llapp.cpp
+++ b/indra/llcommon/llapp.cpp
@@ -90,6 +90,10 @@ S32 LL_HEARTBEAT_SIGNAL = (SIGRTMAX >= 0) ? (SIGRTMAX-0) : SIGUSR2;
 // the static application instance
 LLApp* LLApp::sApplication = NULL;
 
+// Allows the generation of core files for post mortem under gdb
+// and disables crashlogger
+BOOL LLApp::sDisableCrashlogger = FALSE; 
+
 // Local flag for whether or not to do logging in signal handlers.
 //static
 BOOL LLApp::sLogInSignal = FALSE;
@@ -461,11 +465,30 @@ bool LLApp::isQuitting()
 	return (APP_STATUS_QUITTING == sStatus);
 }
 
+// static
 bool LLApp::isExiting()
 {
 	return isQuitting() || isError();
 }
 
+void LLApp::disableCrashlogger()
+{
+	// Disable Breakpad exception handler.
+	if (mExceptionHandler != 0)
+	{
+		delete mExceptionHandler;
+		mExceptionHandler = 0;
+	}
+
+	sDisableCrashlogger = TRUE;
+}
+
+// static
+bool LLApp::isCrashloggerDisabled()
+{
+	return (sDisableCrashlogger == TRUE); 
+}
+
 #if !LL_WINDOWS
 // static
 U32 LLApp::getSigChildCount()
@@ -799,6 +822,15 @@ void default_unix_signal_handler(int signum, siginfo_t *info, void *)
 			{
 				llwarns << "Signal handler - Flagging error status and waiting for shutdown" << llendl;
 			}
+									
+			if (LLApp::isCrashloggerDisabled())	// Don't gracefully handle any signal, crash and core for a gdb post mortem
+			{
+				clear_signals();
+				llwarns << "Fatal signal received, not handling the crash here, passing back to operating system" << llendl;
+				raise(signum);
+				return;
+			}		
+			
 			// Flag status to ERROR, so thread_error does its work.
 			LLApp::setError();
 			// Block in the signal handler until somebody says that we're done.
diff --git a/indra/llcommon/llapp.h b/indra/llcommon/llapp.h
index ee1d696829..a536a06ea5 100644
--- a/indra/llcommon/llapp.h
+++ b/indra/llcommon/llapp.h
@@ -189,6 +189,11 @@ public:
 	//
 	virtual bool mainLoop() = 0; // Override for the application main loop.  Needs to at least gracefully notice the QUITTING state and exit.
 
+	//
+	// Crash logging
+	//
+	void disableCrashlogger();				// Let the OS handle the crashes
+	static bool isCrashloggerDisabled();	// Get the here above set value
 
 	//
 	// Application status
@@ -280,6 +285,7 @@ protected:
 	static void setStatus(EAppStatus status);		// Use this to change the application status.
 	static EAppStatus sStatus; // Reflects current application status
 	static BOOL sErrorThreadRunning; // Set while the error thread is running
+	static BOOL sDisableCrashlogger; // Let the OS handle crashes for us.
 
 #if !LL_WINDOWS
 	static LLAtomicU32* sSigChildCount; // Number of SIGCHLDs received.
diff --git a/indra/llcommon/llavatarname.cpp b/indra/llcommon/llavatarname.cpp
new file mode 100644
index 0000000000..b1ec9e9875
--- /dev/null
+++ b/indra/llcommon/llavatarname.cpp
@@ -0,0 +1,113 @@
+/** 
+ * @file llavatarname.cpp
+ * @brief Represents name-related data for an avatar, such as the
+ * username/SLID ("bobsmith123" or "james.linden") and the display
+ * name ("James Cook")
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * 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 "llavatarname.h"
+
+#include "lldate.h"
+#include "llsd.h"
+
+// Store these in pre-built std::strings to avoid memory allocations in
+// LLSD map lookups
+static const std::string USERNAME("username");
+static const std::string DISPLAY_NAME("display_name");
+static const std::string LEGACY_FIRST_NAME("legacy_first_name");
+static const std::string LEGACY_LAST_NAME("legacy_last_name");
+static const std::string IS_DISPLAY_NAME_DEFAULT("is_display_name_default");
+static const std::string DISPLAY_NAME_EXPIRES("display_name_expires");
+static const std::string DISPLAY_NAME_NEXT_UPDATE("display_name_next_update");
+
+LLAvatarName::LLAvatarName()
+:	mUsername(),
+	mDisplayName(),
+	mLegacyFirstName(),
+	mLegacyLastName(),
+	mIsDisplayNameDefault(false),
+	mIsDummy(false),
+	mExpires(F64_MAX),
+	mNextUpdate(0.0)
+{ }
+
+bool LLAvatarName::operator<(const LLAvatarName& rhs) const
+{
+	if (mUsername == rhs.mUsername)
+		return mDisplayName < rhs.mDisplayName;
+	else
+		return mUsername < rhs.mUsername;
+}
+
+LLSD LLAvatarName::asLLSD() const
+{
+	LLSD sd;
+	sd[USERNAME] = mUsername;
+	sd[DISPLAY_NAME] = mDisplayName;
+	sd[LEGACY_FIRST_NAME] = mLegacyFirstName;
+	sd[LEGACY_LAST_NAME] = mLegacyLastName;
+	sd[IS_DISPLAY_NAME_DEFAULT] = mIsDisplayNameDefault;
+	sd[DISPLAY_NAME_EXPIRES] = LLDate(mExpires);
+	sd[DISPLAY_NAME_NEXT_UPDATE] = LLDate(mNextUpdate);
+	return sd;
+}
+
+void LLAvatarName::fromLLSD(const LLSD& sd)
+{
+	mUsername = sd[USERNAME].asString();
+	mDisplayName = sd[DISPLAY_NAME].asString();
+	mLegacyFirstName = sd[LEGACY_FIRST_NAME].asString();
+	mLegacyLastName = sd[LEGACY_LAST_NAME].asString();
+	mIsDisplayNameDefault = sd[IS_DISPLAY_NAME_DEFAULT].asBoolean();
+	LLDate expires = sd[DISPLAY_NAME_EXPIRES];
+	mExpires = expires.secondsSinceEpoch();
+	LLDate next_update = sd[DISPLAY_NAME_NEXT_UPDATE];
+	mNextUpdate = next_update.secondsSinceEpoch();
+}
+
+std::string LLAvatarName::getCompleteName() const
+{
+	std::string name;
+	if (!mUsername.empty())
+	{
+		name = mDisplayName + " (" + mUsername + ")";
+	}
+	else
+	{
+		// ...display names are off, legacy name is in mDisplayName
+		name = mDisplayName;
+	}
+	return name;
+}
+
+std::string LLAvatarName::getLegacyName() const
+{
+	std::string name;
+	name.reserve( mLegacyFirstName.size() + 1 + mLegacyLastName.size() );
+	name = mLegacyFirstName;
+	name += " ";
+	name += mLegacyLastName;
+	return name;
+}
diff --git a/indra/llcommon/llavatarname.h b/indra/llcommon/llavatarname.h
new file mode 100644
index 0000000000..145aeccd35
--- /dev/null
+++ b/indra/llcommon/llavatarname.h
@@ -0,0 +1,95 @@
+/** 
+ * @file llavatarname.h
+ * @brief Represents name-related data for an avatar, such as the
+ * username/SLID ("bobsmith123" or "james.linden") and the display
+ * name ("James Cook")
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * 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 LLAVATARNAME_H
+#define LLAVATARNAME_H
+
+#include <string>
+
+class LLSD;
+
+class LL_COMMON_API LLAvatarName
+{
+public:
+	LLAvatarName();
+	
+	bool operator<(const LLAvatarName& rhs) const;
+
+	LLSD asLLSD() const;
+
+	void fromLLSD(const LLSD& sd);
+
+	// For normal names, returns "James Linden (james.linden)"
+	// When display names are disabled returns just "James Linden"
+	std::string getCompleteName() const;
+
+	// Returns "James Linden" or "bobsmith123 Resident" for backwards
+	// compatibility with systems like voice and muting
+	// *TODO: Eliminate this in favor of username only
+	std::string getLegacyName() const;
+
+	// "bobsmith123" or "james.linden", US-ASCII only
+	std::string mUsername;
+
+	// "Jose' Sanchez" or "James Linden", UTF-8 encoded Unicode
+	// Contains data whether or not user has explicitly set
+	// a display name; may duplicate their username.
+	std::string mDisplayName;
+
+	// For "James Linden", "James"
+	// For "bobsmith123", "bobsmith123"
+	// Used to communicate with legacy systems like voice and muting which
+	// rely on old-style names.
+	// *TODO: Eliminate this in favor of username only
+	std::string mLegacyFirstName;
+
+	// For "James Linden", "Linden"
+	// For "bobsmith123", "Resident"
+	// see above for rationale
+	std::string mLegacyLastName;
+
+	// If true, both display name and SLID were generated from
+	// a legacy first and last name, like "James Linden (james.linden)"
+	bool mIsDisplayNameDefault;
+
+	// Under error conditions, we may insert "dummy" records with
+	// names like "???" into caches as placeholders.  These can be
+	// shown in UI, but are not serialized.
+	bool mIsDummy;
+
+	// Names can change, so need to keep track of when name was
+	// last checked.
+	// Unix time-from-epoch seconds for efficiency
+	F64 mExpires;
+	
+	// You can only change your name every N hours, so record
+	// when the next update is allowed
+	// Unix time-from-epoch seconds
+	F64 mNextUpdate;
+};
+
+#endif
diff --git a/indra/llcommon/llchat.h b/indra/llcommon/llchat.h
index 52b85c7bba..87c2d6775b 100644
--- a/indra/llcommon/llchat.h
+++ b/indra/llcommon/llchat.h
@@ -28,7 +28,6 @@
 #ifndef LL_LLCHAT_H
 #define LL_LLCHAT_H
 
-#include "llstring.h"
 #include "lluuid.h"
 #include "v3math.h"
 
@@ -71,7 +70,7 @@ typedef enum e_chat_style
 class LLChat
 {
 public:
-	LLChat(const std::string& text = LLStringUtil::null)
+	LLChat(const std::string& text = std::string())
 	:	mText(text),
 		mFromName(),
 		mFromID(),
diff --git a/indra/llcommon/lldarray.h b/indra/llcommon/lldarray.h
index a8cd03b42a..131b819c99 100644
--- a/indra/llcommon/lldarray.h
+++ b/indra/llcommon/lldarray.h
@@ -51,7 +51,7 @@ public:
 	
 	LLDynamicArray(S32 size=0) : std::vector<Type>(size) { if (size < BlockSize) std::vector<Type>::reserve(BlockSize); }
 
-	void reset() { std::vector<Type>::resize(0); }
+	void reset() { std::vector<Type>::clear(); }
 
 	// ACCESSORS
 	const Type& get(S32 index) const	 			{ return std::vector<Type>::operator[](index); }
diff --git a/indra/llcommon/lldictionary.h b/indra/llcommon/lldictionary.h
index 552a805b70..bc3bc3e74a 100644
--- a/indra/llcommon/lldictionary.h
+++ b/indra/llcommon/lldictionary.h
@@ -78,7 +78,9 @@ protected:
 	virtual Index notFound() const
 	{
 		// default is to assert
-		llassert(false);
+		// don't assert -- makes it impossible to work on mesh-development and viewer-development simultaneously
+		//			-- davep 2010.10.29
+		//llassert(false);
 		return Index(-1);
 	}
 	void addEntry(Index index, Entry *entry)
diff --git a/indra/llcommon/llfasttimer_class.cpp b/indra/llcommon/llfasttimer_class.cpp
index c45921cdec..bce87ada96 100644
--- a/indra/llcommon/llfasttimer_class.cpp
+++ b/indra/llcommon/llfasttimer_class.cpp
@@ -56,6 +56,7 @@ 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;
diff --git a/indra/llcommon/llfasttimer_class.h b/indra/llcommon/llfasttimer_class.h
index 1158ac5140..eb9789682b 100644
--- a/indra/llcommon/llfasttimer_class.h
+++ b/indra/llcommon/llfasttimer_class.h
@@ -211,6 +211,7 @@ public:
 	static std::queue<LLSD> sLogQueue;
 	static BOOL				sLog;
 	static BOOL				sMetricLog;
+	static std::string		sLogName;
 	static bool 			sPauseHistory;
 	static bool 			sResetHistory;
 	static U64				sTimerCycles;
diff --git a/indra/llcommon/llfile.cpp b/indra/llcommon/llfile.cpp
index 289ce0bc2c..8f02391e75 100644
--- a/indra/llcommon/llfile.cpp
+++ b/indra/llcommon/llfile.cpp
@@ -318,7 +318,12 @@ void llofstream::close()
 	if(is_open())
 	{
 		if (_Filebuffer->close() == 0)
+		{
 			_Myios::setstate(ios_base::failbit);	/*Flawfinder: ignore*/
+		}
+		delete _Filebuffer;
+		_Filebuffer = NULL;
+		_ShouldClose = false;
 	}
 }
 
diff --git a/indra/llcommon/llmetricperformancetester.cpp b/indra/llcommon/llmetricperformancetester.cpp
new file mode 100644
index 0000000000..5fa3a5ea07
--- /dev/null
+++ b/indra/llcommon/llmetricperformancetester.cpp
@@ -0,0 +1,254 @@
+/** 
+ * @file llmetricperformancetester.cpp
+ * @brief LLMetricPerformanceTesterBasic and LLMetricPerformanceTesterWithSession classes implementation
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * 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 "indra_constants.h"
+#include "llerror.h"
+#include "llsdserialize.h"
+#include "llstat.h"
+#include "lltreeiterators.h"
+#include "llmetricperformancetester.h"
+
+//----------------------------------------------------------------------------------------------
+// LLMetricPerformanceTesterBasic : static methods and testers management
+//----------------------------------------------------------------------------------------------
+
+LLMetricPerformanceTesterBasic::name_tester_map_t LLMetricPerformanceTesterBasic::sTesterMap ;
+
+/*static*/ 
+void LLMetricPerformanceTesterBasic::cleanClass() 
+{
+	for (name_tester_map_t::iterator iter = sTesterMap.begin() ; iter != sTesterMap.end() ; ++iter)
+	{
+		delete iter->second ;
+	}
+	sTesterMap.clear() ;
+}
+
+/*static*/ 
+BOOL LLMetricPerformanceTesterBasic::addTester(LLMetricPerformanceTesterBasic* tester) 
+{
+	llassert_always(tester != NULL);	
+	std::string name = tester->getTesterName() ;
+	if (getTester(name))
+	{
+		llerrs << "Tester name is already used by some other tester : " << name << llendl ;
+		return FALSE;
+	}
+
+	sTesterMap.insert(std::make_pair(name, tester));
+	return TRUE;
+}
+	
+/*static*/ 
+LLMetricPerformanceTesterBasic* LLMetricPerformanceTesterBasic::getTester(std::string name) 
+{
+	// Check for the requested metric name
+	name_tester_map_t::iterator found_it = sTesterMap.find(name) ;
+	if (found_it != sTesterMap.end())
+	{
+		return found_it->second ;
+	}
+	return NULL ;
+}
+
+/*static*/ 
+// 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)));
+}
+
+	
+//----------------------------------------------------------------------------------------------
+// LLMetricPerformanceTesterBasic : Tester instance methods
+//----------------------------------------------------------------------------------------------
+
+LLMetricPerformanceTesterBasic::LLMetricPerformanceTesterBasic(std::string name) : 
+	mName(name),
+	mCount(0)
+{
+	if (mName == std::string())
+	{
+		llerrs << "LLMetricPerformanceTesterBasic construction invalid : Empty name passed to constructor" << llendl ;
+	}
+
+	mValidInstance = LLMetricPerformanceTesterBasic::addTester(this) ;
+}
+
+LLMetricPerformanceTesterBasic::~LLMetricPerformanceTesterBasic() 
+{
+}
+
+void LLMetricPerformanceTesterBasic::preOutputTestResults(LLSD* sd) 
+{
+	incrementCurrentCount() ;
+	(*sd)[getCurrentLabelName()]["Name"] = mName ;
+}
+
+void LLMetricPerformanceTesterBasic::postOutputTestResults(LLSD* sd)
+{
+	LLMutexLock lock(LLFastTimer::sLogLock);
+	LLFastTimer::sLogQueue.push((*sd));
+}
+
+void LLMetricPerformanceTesterBasic::outputTestResults() 
+{
+	LLSD sd;
+
+	preOutputTestResults(&sd) ; 
+	outputTestRecord(&sd) ;
+	postOutputTestResults(&sd) ;
+}
+
+void LLMetricPerformanceTesterBasic::addMetric(std::string str)
+{
+	mMetricStrings.push_back(str) ;
+}
+
+/*virtual*/ 
+void LLMetricPerformanceTesterBasic::analyzePerformance(std::ofstream* os, LLSD* base, LLSD* current) 
+{
+	resetCurrentCount() ;
+
+	std::string current_label = getCurrentLabelName();
+	BOOL in_base = (*base).has(current_label) ;
+	BOOL in_current = (*current).has(current_label) ;
+
+	while(in_base || in_current)
+	{
+		LLSD::String label = current_label ;		
+
+		if(in_base && in_current)
+		{				
+			*os << llformat("%s\n", label.c_str()) ;
+
+			for(U32 index = 0 ; index < mMetricStrings.size() ; index++)
+			{
+				switch((*current)[label][ mMetricStrings[index] ].type())
+				{
+				case LLSD::TypeInteger:
+					compareTestResults(os, mMetricStrings[index], 
+						(S32)((*base)[label][ mMetricStrings[index] ].asInteger()), (S32)((*current)[label][ mMetricStrings[index] ].asInteger())) ;
+					break ;
+				case LLSD::TypeReal:
+					compareTestResults(os, mMetricStrings[index], 
+						(F32)((*base)[label][ mMetricStrings[index] ].asReal()), (F32)((*current)[label][ mMetricStrings[index] ].asReal())) ;
+					break;
+				default:
+					llerrs << "unsupported metric " << mMetricStrings[index] << " LLSD type: " << (S32)(*current)[label][ mMetricStrings[index] ].type() << llendl ;
+				}
+			}	
+		}
+
+		incrementCurrentCount();
+		current_label = getCurrentLabelName();
+		in_base = (*base).has(current_label) ;
+		in_current = (*current).has(current_label) ;
+	}
+}
+
+/*virtual*/ 
+void LLMetricPerformanceTesterBasic::compareTestResults(std::ofstream* os, std::string metric_string, S32 v_base, S32 v_current) 
+{
+	*os << llformat(" ,%s, %d, %d, %d, %.4f\n", metric_string.c_str(), v_base, v_current, 
+						v_current - v_base, (v_base != 0) ? 100.f * v_current / v_base : 0) ;
+}
+
+/*virtual*/ 
+void LLMetricPerformanceTesterBasic::compareTestResults(std::ofstream* os, std::string metric_string, F32 v_base, F32 v_current) 
+{
+	*os << llformat(" ,%s, %.4f, %.4f, %.4f, %.4f\n", metric_string.c_str(), v_base, v_current,						
+						v_current - v_base, (fabs(v_base) > 0.0001f) ? 100.f * v_current / v_base : 0.f ) ;
+}
+
+//----------------------------------------------------------------------------------------------
+// LLMetricPerformanceTesterWithSession
+//----------------------------------------------------------------------------------------------
+
+LLMetricPerformanceTesterWithSession::LLMetricPerformanceTesterWithSession(std::string name) : 
+	LLMetricPerformanceTesterBasic(name),
+	mBaseSessionp(NULL),
+	mCurrentSessionp(NULL)
+{
+}
+
+LLMetricPerformanceTesterWithSession::~LLMetricPerformanceTesterWithSession()
+{
+	if (mBaseSessionp)
+	{
+		delete mBaseSessionp ;
+		mBaseSessionp = NULL ;
+	}
+	if (mCurrentSessionp)
+	{
+		delete mCurrentSessionp ;
+		mCurrentSessionp = NULL ;
+	}
+}
+
+/*virtual*/ 
+void LLMetricPerformanceTesterWithSession::analyzePerformance(std::ofstream* os, LLSD* base, LLSD* current) 
+{
+	// Load the base session
+	resetCurrentCount() ;
+	mBaseSessionp = loadTestSession(base) ;
+
+	// Load the current session
+	resetCurrentCount() ;
+	mCurrentSessionp = loadTestSession(current) ;
+
+	if (!mBaseSessionp || !mCurrentSessionp)
+	{
+		llerrs << "Error loading test sessions." << llendl ;
+	}
+
+	// Compare
+	compareTestSessions(os) ;
+
+	// Release memory
+	if (mBaseSessionp)
+	{
+		delete mBaseSessionp ;
+		mBaseSessionp = NULL ;
+	}
+	if (mCurrentSessionp)
+	{
+		delete mCurrentSessionp ;
+		mCurrentSessionp = NULL ;
+	}
+}
+
+
+//----------------------------------------------------------------------------------------------
+// LLTestSession
+//----------------------------------------------------------------------------------------------
+
+LLMetricPerformanceTesterWithSession::LLTestSession::~LLTestSession() 
+{
+}
+
diff --git a/indra/llcommon/llmetricperformancetester.h b/indra/llcommon/llmetricperformancetester.h
new file mode 100644
index 0000000000..925010ac96
--- /dev/null
+++ b/indra/llcommon/llmetricperformancetester.h
@@ -0,0 +1,206 @@
+/** 
+ * @file llmetricperformancetester.h 
+ * @brief LLMetricPerformanceTesterBasic and LLMetricPerformanceTesterWithSession classes definition
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * 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_METRICPERFORMANCETESTER_H 
+#define LL_METRICPERFORMANCETESTER_H 
+
+const std::string DEFAULT_METRIC_NAME("metric");
+
+/**
+ * @class LLMetricPerformanceTesterBasic
+ * @brief Performance Metric Base Class
+ */
+class LL_COMMON_API LLMetricPerformanceTesterBasic
+{
+public:
+	/**
+	 * @brief Creates a basic tester instance.
+	 * @param[in] name - Unique string identifying this tester instance.
+	 */
+	LLMetricPerformanceTesterBasic(std::string name);
+	virtual ~LLMetricPerformanceTesterBasic();
+
+	/**
+	 * @return Returns true if the instance has been added to the tester map.
+	 * Need to be tested after creation of a tester instance so to know if the tester is correctly handled.
+	 * A tester might not be added to the map if another tester with the same name already exists.
+	 */
+	BOOL isValid() const { return mValidInstance; }
+
+	/**
+	 * @brief Write a set of test results to the log LLSD.
+	 */
+	void outputTestResults() ;
+
+	/**
+	 * @brief Compare the test results.
+	 * By default, compares the test results against the baseline one by one, item by item, 
+	 * in the increasing order of the LLSD record counter, starting from the first one.
+	 */
+	virtual void analyzePerformance(std::ofstream* os, LLSD* base, LLSD* current) ;
+
+	/**
+	 * @return Returns the number of the test metrics in this tester instance.
+	 */
+	S32 getNumberOfMetrics() const { return mMetricStrings.size() ;}
+	/**
+	 * @return Returns the metric name at index
+	 * @param[in] index - Index on the list of metrics managed by this tester instance.
+	 */
+	std::string getMetricName(S32 index) const { return mMetricStrings[index] ;}
+
+protected:
+	/**
+	 * @return Returns the name of this tester instance.
+	 */
+	std::string getTesterName() const { return mName ;}
+
+	/**
+	 * @brief Insert a new metric to be managed by this tester instance.
+	 * @param[in] str - Unique string identifying the new metric.
+	 */
+	void addMetric(std::string str) ;
+
+	/**
+	 * @brief Compare test results, provided in 2 flavors: compare integers and compare floats.
+	 * @param[out] os - Formatted output string holding the compared values.
+	 * @param[in] metric_string - Name of the metric.
+	 * @param[in] v_base - Base value of the metric.
+	 * @param[in] v_current - Current value of the metric.
+	 */
+	virtual void compareTestResults(std::ofstream* os, std::string metric_string, S32 v_base, S32 v_current) ;
+	virtual void compareTestResults(std::ofstream* os, std::string metric_string, F32 v_base, F32 v_current) ;
+
+	/**
+	 * @brief Reset internal record count. Count starts with 1.
+	 */
+	void resetCurrentCount() { mCount = 1; }
+	/**
+	 * @brief Increment internal record count.
+	 */
+	void incrementCurrentCount() { mCount++; }
+	/**
+	 * @return Returns the label to be used for the current count. It's "TesterName"-"Count".
+	 */
+	std::string getCurrentLabelName() const { return llformat("%s-%d", mName.c_str(), mCount) ;}
+
+	/**
+	 * @brief Write a test record to the LLSD. Implementers need to overload this method.
+	 * @param[out] sd - The LLSD record to store metric data into.
+	 */
+	virtual void outputTestRecord(LLSD* sd) = 0 ;
+
+private:
+	void preOutputTestResults(LLSD* sd) ;
+	void postOutputTestResults(LLSD* sd) ;
+
+	std::string mName ;							// Name of this tester instance
+	S32 mCount ;								// Current record count
+	BOOL mValidInstance;						// TRUE if the instance is managed by the map
+	std::vector< std::string > mMetricStrings ; // Metrics strings
+
+// Static members managing the collection of testers
+public:	
+	// Map of all the tester instances in use
+	typedef std::map< std::string, LLMetricPerformanceTesterBasic* > name_tester_map_t;	
+	static name_tester_map_t sTesterMap ;
+
+	/**
+	 * @return Returns a pointer to the tester
+	 * @param[in] name - Name of the tester instance queried.
+	 */
+	static LLMetricPerformanceTesterBasic* getTester(std::string name) ;
+	
+	/**
+	 * @return Returns TRUE if that metric *or* the default catch all metric has been requested to be logged
+	 * @param[in] name - Name of the tester queried.
+	 */
+	static BOOL isMetricLogRequested(std::string name);
+	
+	/**
+	 * @return Returns TRUE if there's a tester defined, FALSE otherwise.
+	 */
+	static BOOL hasMetricPerformanceTesters() { return !sTesterMap.empty() ;}
+	/**
+	 * @brief Delete all testers and reset the tester map
+	 */
+	static void cleanClass() ;
+
+private:
+	// Add a tester to the map. Returns false if adding fails.
+	static BOOL addTester(LLMetricPerformanceTesterBasic* tester) ;
+};
+
+/**
+ * @class LLMetricPerformanceTesterWithSession
+ * @brief Performance Metric Class with custom session 
+ */
+class LL_COMMON_API LLMetricPerformanceTesterWithSession : public LLMetricPerformanceTesterBasic
+{
+public:
+	/**
+	 * @param[in] name - Unique string identifying this tester instance.
+	 */
+	LLMetricPerformanceTesterWithSession(std::string name);
+	virtual ~LLMetricPerformanceTesterWithSession();
+
+	/**
+	 * @brief Compare the test results.
+	 * This will be loading the base and current sessions and compare them using the virtual 
+	 * abstract methods loadTestSession() and compareTestSessions()
+	 */
+	virtual void analyzePerformance(std::ofstream* os, LLSD* base, LLSD* current) ;
+
+protected:
+	/**
+	 * @class LLMetricPerformanceTesterWithSession::LLTestSession
+	 * @brief Defines an interface for the two abstract virtual functions loadTestSession() and compareTestSessions()
+	 */
+	class LL_COMMON_API LLTestSession
+		{
+		public:
+			virtual ~LLTestSession() ;
+		};
+
+	/**
+	 * @brief Convert an LLSD log into a test session.
+	 * @param[in] log - The LLSD record
+	 * @return Returns the record as a test session
+	 */
+	virtual LLMetricPerformanceTesterWithSession::LLTestSession* loadTestSession(LLSD* log) = 0;
+
+	/**
+	 * @brief Compare the base session and the target session. Assumes base and current sessions have been loaded.
+	 * @param[out] os - The comparison result as a standard stream
+	 */
+	virtual void compareTestSessions(std::ofstream* os) = 0;
+
+	LLTestSession* mBaseSessionp;
+	LLTestSession* mCurrentSessionp;
+};
+
+#endif
+
diff --git a/indra/llcommon/llprocesslauncher.cpp b/indra/llcommon/llprocesslauncher.cpp
index 99308c94e7..81e5f8820d 100644
--- a/indra/llcommon/llprocesslauncher.cpp
+++ b/indra/llcommon/llprocesslauncher.cpp
@@ -58,6 +58,11 @@ void LLProcessLauncher::setWorkingDirectory(const std::string &dir)
 	mWorkingDir = dir;
 }
 
+const std::string& LLProcessLauncher::getExecutable() const
+{
+	return mExecutable;
+}
+
 void LLProcessLauncher::clearArguments()
 {
 	mLaunchArguments.clear();
diff --git a/indra/llcommon/llprocesslauncher.h b/indra/llcommon/llprocesslauncher.h
index 479aeb664a..954c249147 100644
--- a/indra/llcommon/llprocesslauncher.h
+++ b/indra/llcommon/llprocesslauncher.h
@@ -47,6 +47,8 @@ public:
 	void setExecutable(const std::string &executable);
 	void setWorkingDirectory(const std::string &dir);
 
+	const std::string& getExecutable() const;
+
 	void clearArguments();
 	void addArgument(const std::string &arg);
 	void addArgument(const char *arg);
diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index ae7e624a1a..f3b48b0156 100644
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -731,14 +731,17 @@ void LLStringOps::setupDatetimeInfo (bool daylight)
 
 	nowT = time (NULL);
 
-	tmpT = localtime (&nowT);
-	localT = mktime (tmpT);
-
 	tmpT = gmtime (&nowT);
 	gmtT = mktime (tmpT);
 
+	tmpT = localtime (&nowT);
+	localT = mktime (tmpT);
+	
 	sLocalTimeOffset = (long) (gmtT - localT);
-
+	if (tmpT->tm_isdst)
+	{
+		sLocalTimeOffset -= 60 * 60;	// 1 hour
+	}
 
 	sPacificDaylightTime = daylight;
 	sPacificTimeOffset = (sPacificDaylightTime? 7 : 8 ) * 60 * 60;
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index 00c94404d4..10cdc7087b 100644
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -635,6 +635,26 @@ U32 LLMemoryInfo::getPhysicalMemoryClamped() const
 	}
 }
 
+//static
+void LLMemoryInfo::getAvailableMemoryKB(U32& avail_physical_mem_kb, U32& avail_virtual_mem_kb)
+{
+#if LL_WINDOWS
+	MEMORYSTATUSEX state;
+	state.dwLength = sizeof(state);
+	GlobalMemoryStatusEx(&state);
+
+	avail_physical_mem_kb = (U32)(state.ullAvailPhys/1024) ;
+	avail_virtual_mem_kb = (U32)(state.ullAvailVirtual/1024) ;
+
+#else
+	//do not know how to collect available memory info for other systems.
+	//leave it blank here for now.
+
+	avail_physical_mem_kb = -1 ;
+	avail_virtual_mem_kb = -1 ;
+#endif
+}
+
 void LLMemoryInfo::stream(std::ostream& s) const
 {
 #if LL_WINDOWS
diff --git a/indra/llcommon/llsys.h b/indra/llcommon/llsys.h
index 39af74e5c8..41a4f25000 100644
--- a/indra/llcommon/llsys.h
+++ b/indra/llcommon/llsys.h
@@ -114,6 +114,9 @@ public:
 	**  be returned.
 	*/
 	U32 getPhysicalMemoryClamped() const; ///< Memory size in clamped bytes
+
+	//get the available memory infomation in KiloBytes.
+	static void getAvailableMemoryKB(U32& avail_physical_mem_kb, U32& avail_virtual_mem_kb);
 };
 
 
diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index d7b7c3699c..49d05ef411 100644
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -63,9 +63,6 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap
 {
 	LLThread *threadp = (LLThread *)datap;
 
-	// Set thread state to running
-	threadp->mStatus = RUNNING;
-
 	// Run the user supplied function
 	threadp->run();
 
@@ -147,26 +144,45 @@ void LLThread::shutdown()
 		{
 			// This thread just wouldn't stop, even though we gave it time
 			llwarns << "LLThread::~LLThread() exiting thread before clean exit!" << llendl;
+			// Put a stake in its heart.
+			apr_thread_exit(mAPRThreadp, -1);
 			return;
 		}
 		mAPRThreadp = NULL;
 	}
 
 	delete mRunCondition;
+	mRunCondition = 0;
 	
-	if (mIsLocalPool)
+	if (mIsLocalPool && mAPRPoolp)
 	{
 		apr_pool_destroy(mAPRPoolp);
+		mAPRPoolp = 0;
 	}
 }
 
 
 void LLThread::start()
 {
-	apr_thread_create(&mAPRThreadp, NULL, staticRun, (void *)this, mAPRPoolp);	
+	llassert(isStopped());
+	
+	// Set thread state to running
+	mStatus = RUNNING;
 
-	// We won't bother joining
-	apr_thread_detach(mAPRThreadp);
+	apr_status_t status =
+		apr_thread_create(&mAPRThreadp, NULL, staticRun, (void *)this, mAPRPoolp);
+	
+	if(status == APR_SUCCESS)
+	{	
+		// We won't bother joining
+		apr_thread_detach(mAPRThreadp);
+	}
+	else
+	{
+		mStatus = STOPPED;
+		llwarns << "failed to start thread " << mName << llendl;
+		ll_apr_warn_status(status);
+	}
 }
 
 //============================================================================
diff --git a/indra/llcommon/llthreadsafequeue.cpp b/indra/llcommon/llthreadsafequeue.cpp
new file mode 100644
index 0000000000..8a73e632a9
--- /dev/null
+++ b/indra/llcommon/llthreadsafequeue.cpp
@@ -0,0 +1,109 @@
+/** 
+ * @file llthread.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 <apr_pools.h>
+#include <apr_queue.h>
+#include "llthreadsafequeue.h"
+
+
+
+// LLThreadSafeQueueImplementation
+//-----------------------------------------------------------------------------
+
+
+LLThreadSafeQueueImplementation::LLThreadSafeQueueImplementation(apr_pool_t * pool, unsigned int capacity):
+	mOwnsPool(pool == 0),
+	mPool(pool),
+	mQueue(0)
+{
+	if(mOwnsPool) {
+		apr_status_t status = apr_pool_create(&mPool, 0);
+		if(status != APR_SUCCESS) throw LLThreadSafeQueueError("failed to allocate pool");
+	} else {
+		; // No op.
+	}
+	
+	apr_status_t status = apr_queue_create(&mQueue, capacity, mPool);
+	if(status != APR_SUCCESS) throw LLThreadSafeQueueError("failed to allocate queue");
+}
+
+
+LLThreadSafeQueueImplementation::~LLThreadSafeQueueImplementation()
+{
+	if(mQueue != 0) {
+		if(apr_queue_size(mQueue) != 0) llwarns << 
+			"terminating queue which still contains " << apr_queue_size(mQueue) <<
+			" elements;" << "memory will be leaked" << LL_ENDL;
+		apr_queue_term(mQueue);
+	}
+	if(mOwnsPool && (mPool != 0)) apr_pool_destroy(mPool);
+}
+
+
+void LLThreadSafeQueueImplementation::pushFront(void * element)
+{
+	apr_status_t status = apr_queue_push(mQueue, element);
+	
+	if(status == APR_EINTR) {
+		throw LLThreadSafeQueueInterrupt();
+	} else if(status != APR_SUCCESS) {
+		throw LLThreadSafeQueueError("push failed");
+	} else {
+		; // Success.
+	}
+}
+
+
+bool LLThreadSafeQueueImplementation::tryPushFront(void * element){
+	return apr_queue_trypush(mQueue, element) == APR_SUCCESS;
+}
+
+
+void * LLThreadSafeQueueImplementation::popBack(void)
+{
+	void * element;
+	apr_status_t status = apr_queue_pop(mQueue, &element);
+
+	if(status == APR_EINTR) {
+		throw LLThreadSafeQueueInterrupt();
+	} else if(status != APR_SUCCESS) {
+		throw LLThreadSafeQueueError("pop failed");
+	} else {
+		return element;
+	}
+}
+
+
+bool LLThreadSafeQueueImplementation::tryPopBack(void *& element)
+{
+	return apr_queue_trypop(mQueue, &element) == APR_SUCCESS;
+}
+
+
+size_t LLThreadSafeQueueImplementation::size()
+{
+	return apr_queue_size(mQueue);
+}
diff --git a/indra/llcommon/llthreadsafequeue.h b/indra/llcommon/llthreadsafequeue.h
new file mode 100644
index 0000000000..58cac38769
--- /dev/null
+++ b/indra/llcommon/llthreadsafequeue.h
@@ -0,0 +1,205 @@
+/** 
+ * @file llthreadsafequeue.h
+ * @brief Base classes for thread, mutex and condition handling.
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * 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_LLTHREADSAFEQUEUE_H
+#define LL_LLTHREADSAFEQUEUE_H
+
+
+#include <string>
+#include <stdexcept>
+
+
+struct apr_pool_t; // From apr_pools.h
+class LLThreadSafeQueueImplementation; // See below.
+
+
+//
+// A general queue exception.
+//
+class LL_COMMON_API LLThreadSafeQueueError:
+public std::runtime_error
+{
+public:
+	LLThreadSafeQueueError(std::string const & message):
+	std::runtime_error(message)
+	{
+		; // No op.
+	}
+};
+
+
+//
+// An exception raised when blocking operations are interrupted.
+//
+class LL_COMMON_API LLThreadSafeQueueInterrupt:
+	public LLThreadSafeQueueError
+{
+public:
+	LLThreadSafeQueueInterrupt(void):
+		LLThreadSafeQueueError("queue operation interrupted")
+	{
+		; // No op.
+	}
+};
+
+
+struct apr_queue_t; // From apr_queue.h
+
+
+//
+// Implementation details. 
+//
+class LL_COMMON_API LLThreadSafeQueueImplementation
+{
+public:
+	LLThreadSafeQueueImplementation(apr_pool_t * pool, unsigned int capacity);
+	~LLThreadSafeQueueImplementation();
+	void pushFront(void * element);
+	bool tryPushFront(void * element);
+	void * popBack(void);
+	bool tryPopBack(void *& element);
+	size_t size();
+	
+private:
+	bool mOwnsPool;
+	apr_pool_t * mPool;
+	apr_queue_t * mQueue;
+};
+
+
+//
+// Implements a thread safe FIFO.
+//
+template<typename ElementT>
+class LLThreadSafeQueue
+{
+public:
+	typedef ElementT value_type;
+	
+	// If the pool is set to NULL one will be allocated and managed by this
+	// queue.
+	LLThreadSafeQueue(apr_pool_t * pool = 0, unsigned int capacity = 1024);
+	
+	// Add an element to the front of queue (will block if the queue has
+	// reached capacity).
+	//
+	// This call will raise an interrupt error if the queue is deleted while
+	// the caller is blocked.
+	void pushFront(ElementT const & element);
+	
+	// Try to add an element to the front ofqueue without blocking. Returns
+	// true only if the element was actually added.
+	bool tryPushFront(ElementT const & element);
+	
+	// Pop the element at the end of the queue (will block if the queue is
+	// empty).
+	//
+	// This call will raise an interrupt error if the queue is deleted while
+	// the caller is blocked.
+	ElementT popBack(void);
+	
+	// Pop an element from the end of the queue if there is one available.
+	// Returns true only if an element was popped.
+	bool tryPopBack(ElementT & element);
+	
+	// Returns the size of the queue.
+	size_t size();
+
+private:
+	LLThreadSafeQueueImplementation mImplementation;
+};
+
+
+
+// LLThreadSafeQueue
+//-----------------------------------------------------------------------------
+
+
+template<typename ElementT>
+LLThreadSafeQueue<ElementT>::LLThreadSafeQueue(apr_pool_t * pool, unsigned int capacity):
+	mImplementation(pool, capacity)
+{
+	; // No op.
+}
+
+
+template<typename ElementT>
+void LLThreadSafeQueue<ElementT>::pushFront(ElementT const & element)
+{
+	ElementT * elementCopy = new ElementT(element);
+	try {
+		mImplementation.pushFront(elementCopy);
+	} catch (LLThreadSafeQueueInterrupt) {
+		delete elementCopy;
+		throw;
+	}
+}
+
+
+template<typename ElementT>
+bool LLThreadSafeQueue<ElementT>::tryPushFront(ElementT const & element)
+{
+	ElementT * elementCopy = new ElementT(element);
+	bool result = mImplementation.tryPushFront(elementCopy);
+	if(!result) delete elementCopy;
+	return result;
+}
+
+
+template<typename ElementT>
+ElementT LLThreadSafeQueue<ElementT>::popBack(void)
+{
+	ElementT * element = reinterpret_cast<ElementT *> (mImplementation.popBack());
+	ElementT result(*element);
+	delete element;
+	return result;
+}
+
+
+template<typename ElementT>
+bool LLThreadSafeQueue<ElementT>::tryPopBack(ElementT & element)
+{
+	void * storedElement;
+	bool result = mImplementation.tryPopBack(storedElement);
+	if(result) {
+		ElementT * elementPtr = reinterpret_cast<ElementT *>(storedElement); 
+		element = *elementPtr;
+		delete elementPtr;
+	} else {
+		; // No op.
+	}
+	return result;
+}
+
+
+template<typename ElementT>
+size_t LLThreadSafeQueue<ElementT>::size(void)
+{
+	return mImplementation.size();
+}
+
+
+#endif
diff --git a/indra/llcommon/llversionviewer.h b/indra/llcommon/llversionviewer.h
index bd65ce8573..d6fa5b1997 100644
--- a/indra/llcommon/llversionviewer.h
+++ b/indra/llcommon/llversionviewer.h
@@ -28,10 +28,14 @@
 #define LL_LLVERSIONVIEWER_H
 
 const S32 LL_VERSION_MAJOR = 2;
-const S32 LL_VERSION_MINOR = 2;
-const S32 LL_VERSION_PATCH = 1;
+const S32 LL_VERSION_MINOR = 5;
+const S32 LL_VERSION_PATCH = 0;
 const S32 LL_VERSION_BUILD = 0;
 
 const char * const LL_CHANNEL = "Second Life Developer";
 
+#if LL_DARWIN
+const char * const LL_VERSION_BUNDLE_ID = "com.secondlife.snowglobe.viewer";
+#endif
+
 #endif
diff --git a/indra/llcommon/roles_constants.h b/indra/llcommon/roles_constants.h
index 70bca821c7..effd15ea72 100644
--- a/indra/llcommon/roles_constants.h
+++ b/indra/llcommon/roles_constants.h
@@ -52,7 +52,6 @@ enum LLRoleChangeType
 //
 
 // KNOWN HOLES: use these for any single bit powers you need
-// bit 0x1 << 41
 // bit 0x1 << 46
 // bit 0x1 << 49 and above
 
@@ -103,6 +102,8 @@ const U64 GP_LAND_ALLOW_FLY		= 0x1 << 24;	// Bypass Fly Restriction
 const U64 GP_LAND_ALLOW_CREATE	= 0x1 << 25;	// Bypass Create/Edit Objects Restriction
 const U64 GP_LAND_ALLOW_LANDMARK	= 0x1 << 26;	// Bypass Landmark Restriction
 const U64 GP_LAND_ALLOW_SET_HOME	= 0x1 << 28;	// Bypass Set Home Point Restriction
+const U64 GP_LAND_ALLOW_HOLD_EVENT	= 0x1LL << 41;	// Allowed to hold events on group-owned land
+
 
 // Parcel Access
 const U64 GP_LAND_MANAGE_ALLOWED	= 0x1 << 29;	// Manage Allowed List