Merge mesh-development with sh-2309

38 files changed, 525 insertions, 222 deletions

diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 0bcd4fdd2f..baa083d96c 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -25,7 +25,7 @@
       <key>Type</key>
       <string>S32</string>
       <key>Value</key>
-      <real>300</real>
+      <real>0</real>
     </map>
     <key>AdminMenu</key>
     <map>
@@ -1981,6 +1981,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>DebugShowPrivateMem</key>
+    <map>
+      <key>Comment</key>
+      <string>Show Private Mem Info</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>DebugShowRenderInfo</key>
     <map>
       <key>Comment</key>
@@ -5459,6 +5470,17 @@
       <key>Value</key>
       <real>48.0</real>
     </map>
+    <key>MaxHeapSize</key>
+    <map>
+      <key>Comment</key>
+      <string>Maximum heap size (GB)</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.6</real>
+    </map>
     <key>MaxSelectDistance</key>
     <map>
       <key>Comment</key>
@@ -5580,6 +5602,17 @@
     <key>Value</key>
     <integer>1</integer>
   </map>
+  <key>MemoryFailurePreventionEnabled</key>
+  <map>
+    <key>Comment</key>
+    <string>If set, the viewer will quit to avoid crash when memory failure happens</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>Boolean</string>
+    <key>Value</key>
+    <integer>0</integer>
+  </map>
   <key>MemoryLogFrequency</key>
         <map>
         <key>Comment</key>
@@ -5591,6 +5624,17 @@
         <key>Value</key>
             <real>600.0</real>
         </map>
+    <key>MemoryPrivatePoolEnabled</key>
+    <map>
+      <key>Comment</key>
+      <string>Enable the private memory pool management</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>1</integer>
+    </map>
     <key>MemProfiling</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 6a808b5daf..7e597fe5dc 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -686,7 +686,7 @@ LLAppViewer::~LLAppViewer()
 }
 
 bool LLAppViewer::init()
-{
+{	
 	//
 	// Start of the application
 	//
@@ -719,6 +719,11 @@ bool LLAppViewer::init()
 
 	LL_INFOS("InitInfo") << "Configuration initialized." << LL_ENDL ;
 
+	//set the max heap size.
+	initMaxHeapSize() ;
+
+	LLPrivateMemoryPoolManager::initClass((BOOL)gSavedSettings.getBOOL("MemoryPrivatePoolEnabled")) ;
+
 	// write Google Breakpad minidump files to our log directory
 	std::string logdir = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "");
 	logdir += gDirUtilp->getDirDelimiter();
@@ -1088,9 +1093,97 @@ bool LLAppViewer::init()
 
 	LLAgentLanguage::init();
 
+	return true;
+}
 
+void LLAppViewer::initMaxHeapSize()
+{
+	//set the max heap size.
+	//here is some info regarding to the max heap size:
+	//------------------------------------------------------------------------------------------
+	// OS       | setting | SL address bits | max manageable memory space | max heap size
+	// Win 32   | default | 32-bit          | 2GB                         | < 1.7GB
+	// Win 32   | /3G     | 32-bit          | 3GB                         | < 1.7GB or 2.7GB
+	//Linux 32  | default | 32-bit          | 3GB                         | < 2.7GB
+	//Linux 32  |HUGEMEM  | 32-bit          | 4GB                         | < 3.7GB
+	//64-bit OS |default  | 32-bit          | 4GB                         | < 3.7GB
+	//64-bit OS |default  | 64-bit          | N/A (> 4GB)                 | N/A (> 4GB)
+	//------------------------------------------------------------------------------------------
+	//currently SL is built under 32-bit setting, we set its max heap size no more than 1.6 GB.
+
+	//F32 max_heap_size_gb = llmin(1.6f, (F32)gSavedSettings.getF32("MaxHeapSize")) ;
+	F32 max_heap_size_gb = gSavedSettings.getF32("MaxHeapSize") ;
+	BOOL enable_mem_failure_prevention = (BOOL)gSavedSettings.getBOOL("MemoryFailurePreventionEnabled") ;
+
+	LLMemory::initMaxHeapSizeGB(max_heap_size_gb, enable_mem_failure_prevention) ;
+}
 
-	return true;
+void LLAppViewer::checkMemory()
+{
+	const static F32 MEMORY_CHECK_INTERVAL = 1.0f ; //second
+	//const static F32 MAX_QUIT_WAIT_TIME = 30.0f ; //seconds
+	const static U32 MAX_SIZE_CHECKED_MEMORY_BLOCK = 64 * 1024 * 1024 ; //64 MB
+	//static F32 force_quit_timer = MAX_QUIT_WAIT_TIME + MEMORY_CHECK_INTERVAL ;
+	static void* last_reserved_address = NULL ;
+
+	if(MEMORY_CHECK_INTERVAL > mMemCheckTimer.getElapsedTimeF32())
+	{
+		return ;
+	}
+	mMemCheckTimer.reset() ;
+
+	if(gGLManager.mDebugGPU)
+	{
+		//update the availability of memory
+		LLMemory::updateMemoryInfo() ;
+	}
+
+	//check the virtual address space fragmentation
+	if(!last_reserved_address)
+	{
+		last_reserved_address = LLMemory::tryToAlloc(last_reserved_address, MAX_SIZE_CHECKED_MEMORY_BLOCK) ;
+	}
+	else
+	{
+		last_reserved_address = LLMemory::tryToAlloc(last_reserved_address, MAX_SIZE_CHECKED_MEMORY_BLOCK) ;
+		if(!last_reserved_address) //failed, try once more
+		{
+			last_reserved_address = LLMemory::tryToAlloc(last_reserved_address, MAX_SIZE_CHECKED_MEMORY_BLOCK) ;
+		}
+	}
+
+	S32 is_low = !last_reserved_address || LLMemory::isMemoryPoolLow() ;
+
+	//if(is_low < 0) //to force quit
+	//{
+	//	if(force_quit_timer > MAX_QUIT_WAIT_TIME) //just hit the limit for the first time
+	//	{
+	//		//send out the notification to tell the viewer is about to quit in 30 seconds.
+	//		LLNotification::Params params("ForceQuitDueToLowMemory");
+	//		LLNotifications::instance().add(params);
+
+	//		force_quit_timer = MAX_QUIT_WAIT_TIME - MEMORY_CHECK_INTERVAL ;
+	//	}
+	//	else
+	//	{
+	//		force_quit_timer -= MEMORY_CHECK_INTERVAL ;
+	//		if(force_quit_timer < 0.f)
+	//		{
+	//			forceQuit() ; //quit
+	//		}
+	//	}
+	//}
+	//else
+	//{
+	//	force_quit_timer = MAX_QUIT_WAIT_TIME + MEMORY_CHECK_INTERVAL ;
+	//}
+
+	LLPipeline::throttleNewMemoryAllocation(!is_low ? FALSE : TRUE) ;		
+	
+	if(is_low)
+	{
+		LLMemory::logMemoryInfo() ;
+	}
 }
 
 static LLFastTimer::DeclareTimer FTM_MESSAGES("System Messages");
@@ -1118,7 +1211,7 @@ bool LLAppViewer::mainLoop()
 	//-------------------------------------------
 
 	// Create IO Pump to use for HTTP Requests.
-	gServicePump = new LLPumpIO(gAPRPoolp);
+	gServicePump = new LLPumpIO;
 	LLHTTPClient::setPump(*gServicePump);
 	LLCurl::setCAFile(gDirUtilp->getCAFile());
 
@@ -1128,7 +1221,6 @@ bool LLAppViewer::mainLoop()
 	LLVoiceClient::getInstance()->init(gServicePump);
 	LLTimer frameTimer,idleTimer;
 	LLTimer debugTime;
-	LLFrameTimer memCheckTimer;
 	LLViewerJoystick* joystick(LLViewerJoystick::getInstance());
 	joystick->setNeedsReset(true);
 
@@ -1139,7 +1231,9 @@ bool LLAppViewer::mainLoop()
     // point of posting.
     LLSD newFrame;
 
-	const F32 memory_check_interval = 1.0f ; //second
+	//LLPrivateMemoryPoolTester::getInstance()->run(false) ;
+	//LLPrivateMemoryPoolTester::getInstance()->run(true) ;
+	//LLPrivateMemoryPoolTester::destroy() ;
 
 	// Handle messages
 	while (!LLApp::isExiting())
@@ -1150,18 +1244,8 @@ bool LLAppViewer::mainLoop()
 		llclearcallstacks;
 
 		//check memory availability information
-		{
-			if(memory_check_interval < memCheckTimer.getElapsedTimeF32())
-			{
-				memCheckTimer.reset() ;
-
-				//update the availability of memory
-				LLMemoryInfo::getAvailableMemoryKB(mAvailPhysicalMemInKB, mAvailVirtualMemInKB) ;
-			}
-			llcallstacks << "Available physical mem(KB): " << mAvailPhysicalMemInKB << llcallstacksendl ;
-			llcallstacks << "Available virtual mem(KB): " << mAvailVirtualMemInKB << llcallstacksendl ;
-		}
-
+		checkMemory() ;
+		
 		try
 		{
 			pingMainloopTimeout("Main:MiscNativeWindowEvents");
@@ -1325,7 +1409,7 @@ bool LLAppViewer::mainLoop()
 				idleTimer.reset();
 				bool is_slow = (frameTimer.getElapsedTimeF64() > FRAME_SLOW_THRESHOLD) ;
 				S32 total_work_pending = 0;
-				S32 total_io_pending = 0;				
+				S32 total_io_pending = 0;	
 				while(!is_slow)//do not unpause threads if the frame rates are very low.
 				{
 					S32 work_pending = 0;
@@ -1393,15 +1477,7 @@ bool LLAppViewer::mainLoop()
 		}
 		catch(std::bad_alloc)
 		{			
-			{
-				llinfos << "Availabe physical memory(KB) at the beginning of the frame: " << mAvailPhysicalMemInKB << llendl ;
-				llinfos << "Availabe virtual memory(KB) at the beginning of the frame: " << mAvailVirtualMemInKB << llendl ;
-
-				LLMemoryInfo::getAvailableMemoryKB(mAvailPhysicalMemInKB, mAvailVirtualMemInKB) ;
-
-				llinfos << "Current availabe physical memory(KB): " << mAvailPhysicalMemInKB << llendl ;
-				llinfos << "Current availabe virtual memory(KB): " << mAvailVirtualMemInKB << llendl ;
-			}
+			LLMemory::logMemoryInfo(TRUE) ;
 
 			//stop memory leaking simulation
 			LLFloaterMemLeak* mem_leak_instance =
@@ -1494,16 +1570,16 @@ bool LLAppViewer::cleanup()
 	}
 
 	// *TODO - generalize this and move DSO wrangling to a helper class -brad
-	std::set<struct apr_dso_handle_t *>::const_iterator i;
-	for(i = mPlugins.begin(); i != mPlugins.end(); ++i)
+	for(std::map<apr_dso_handle_t*, boost::shared_ptr<LLAPRPool> >::iterator plugin = mPlugins.begin();
+		plugin != mPlugins.end(); ++plugin)
 	{
 		int (*ll_plugin_stop_func)(void) = NULL;
-		apr_status_t rv = apr_dso_sym((apr_dso_handle_sym_t*)&ll_plugin_stop_func, *i, "ll_plugin_stop");
+		apr_status_t rv = apr_dso_sym((apr_dso_handle_sym_t*)&ll_plugin_stop_func, plugin->first, "ll_plugin_stop");
 		ll_plugin_stop_func();
 
-		rv = apr_dso_unload(*i);
+		rv = apr_dso_unload(plugin->first);
 	}
-	mPlugins.clear();
+	mPlugins.clear();	// Forget handles and destroy all memory pools.
 
 	//flag all elements as needing to be destroyed immediately
 	// to ensure shutdown order
@@ -1887,6 +1963,9 @@ bool LLAppViewer::cleanup()
 
 	LLMainLoopRepeater::instance().stop();
 
+	//release all private memory pools.
+	LLPrivateMemoryPoolManager::destroyClass() ;
+
 	ll_close_fail_log();
 
 	MEM_TRACK_RELEASE
@@ -1938,7 +2017,7 @@ bool LLAppViewer::initThreads()
 
 	if (LLFastTimer::sLog || LLFastTimer::sMetricLog)
 	{
-		LLFastTimer::sLogLock = new LLMutex(NULL);
+		LLFastTimer::sLogLock = new LLMutex;
 		mFastTimerLogThread = new LLFastTimerLogThread(LLFastTimer::sLogName);
 		mFastTimerLogThread->start();
 	}
@@ -3186,8 +3265,7 @@ void LLAppViewer::handleViewerCrash()
 		else crash_file_name = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,ERROR_MARKER_FILE_NAME);
 		llinfos << "Creating crash marker file " << crash_file_name << llendl;
 		
-		LLAPRFile crash_file ;
-		crash_file.open(crash_file_name, LL_APR_W);
+		LLAPRFile crash_file(crash_file_name, LL_APR_W);
 		if (crash_file.getFileHandle())
 		{
 			LL_INFOS("MarkerFile") << "Created crash marker file " << crash_file_name << LL_ENDL;
@@ -3251,11 +3329,10 @@ bool LLAppViewer::anotherInstanceRunning()
 	LL_DEBUGS("MarkerFile") << "Checking marker file for lock..." << LL_ENDL;
 
 	//Freeze case checks
-	if (LLAPRFile::isExist(marker_file, NULL, LL_APR_RB))
+	if (LLAPRFile::isExist(marker_file, LL_APR_RB))
 	{
 		// File exists, try opening with write permissions
-		LLAPRFile outfile ;
-		outfile.open(marker_file, LL_APR_WB);
+		LLAPRFile outfile(marker_file, LL_APR_WB);
 		apr_file_t* fMarker = outfile.getFileHandle() ; 
 		if (!fMarker)
 		{
@@ -3294,25 +3371,25 @@ void LLAppViewer::initMarkerFile()
 	std::string llerror_marker_file = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, LLERROR_MARKER_FILE_NAME);
 	std::string error_marker_file = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, ERROR_MARKER_FILE_NAME);
 
-	if (LLAPRFile::isExist(mMarkerFileName, NULL, LL_APR_RB) && !anotherInstanceRunning())
+	if (LLAPRFile::isExist(mMarkerFileName, LL_APR_RB) && !anotherInstanceRunning())
 	{
 		gLastExecEvent = LAST_EXEC_FROZE;
 		LL_INFOS("MarkerFile") << "Exec marker found: program froze on previous execution" << LL_ENDL;
 	}    
-	if(LLAPRFile::isExist(logout_marker_file, NULL, LL_APR_RB))
+	if(LLAPRFile::isExist(logout_marker_file, LL_APR_RB))
 	{
 		gLastExecEvent = LAST_EXEC_LOGOUT_FROZE;
 		LL_INFOS("MarkerFile") << "Last exec LLError crashed, setting LastExecEvent to " << gLastExecEvent << LL_ENDL;
 		LLAPRFile::remove(logout_marker_file);
 	}
-	if(LLAPRFile::isExist(llerror_marker_file, NULL, LL_APR_RB))
+	if(LLAPRFile::isExist(llerror_marker_file, LL_APR_RB))
 	{
 		if(gLastExecEvent == LAST_EXEC_LOGOUT_FROZE) gLastExecEvent = LAST_EXEC_LOGOUT_CRASH;
 		else gLastExecEvent = LAST_EXEC_LLERROR_CRASH;
 		LL_INFOS("MarkerFile") << "Last exec LLError crashed, setting LastExecEvent to " << gLastExecEvent << LL_ENDL;
 		LLAPRFile::remove(llerror_marker_file);
 	}
-	if(LLAPRFile::isExist(error_marker_file, NULL, LL_APR_RB))
+	if(LLAPRFile::isExist(error_marker_file, LL_APR_RB))
 	{
 		if(gLastExecEvent == LAST_EXEC_LOGOUT_FROZE) gLastExecEvent = LAST_EXEC_LOGOUT_CRASH;
 		else gLastExecEvent = LAST_EXEC_OTHER_CRASH;
@@ -3328,7 +3405,7 @@ void LLAppViewer::initMarkerFile()
 	
 	// Create the marker file for this execution & lock it
 	apr_status_t s;
-	s = mMarkerFile.open(mMarkerFileName, LL_APR_W, TRUE);	
+	s = mMarkerFile.open(mMarkerFileName, LL_APR_W, LLAPRFile::long_lived);
 
 	if (s == APR_SUCCESS && mMarkerFile.getFileHandle())
 	{
@@ -4586,8 +4663,7 @@ void LLAppViewer::sendLogoutRequest()
 		gLogoutInProgress = TRUE;
 		mLogoutMarkerFileName = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,LOGOUT_MARKER_FILE_NAME);
 		
-		LLAPRFile outfile ;
-		outfile.open(mLogoutMarkerFileName, LL_APR_W);
+		LLAPRFile outfile(mLogoutMarkerFileName, LL_APR_W);
 		mLogoutMarkerFile =  outfile.getFileHandle() ;
 		if (mLogoutMarkerFile)
 		{
@@ -5039,14 +5115,15 @@ void LLAppViewer::loadEventHostModule(S32 listen_port)
 	}
 #endif // LL_WINDOWS
 
-	apr_dso_handle_t * eventhost_dso_handle = NULL;
-	apr_pool_t * eventhost_dso_memory_pool = NULL;
+	boost::shared_ptr<LLAPRPool> eventhost_dso_memory_pool_ptr(new LLAPRPool);
+	LLAPRPool& eventhost_dso_memory_pool(*eventhost_dso_memory_pool_ptr);
+	apr_dso_handle_t* eventhost_dso_handle = NULL;
 
 	//attempt to load the shared library
-	apr_pool_create(&eventhost_dso_memory_pool, NULL);
+	eventhost_dso_memory_pool.create();
 	apr_status_t rv = apr_dso_load(&eventhost_dso_handle,
 		dso_path.c_str(),
-		eventhost_dso_memory_pool);
+		eventhost_dso_memory_pool());
 	llassert_always(! ll_apr_warn_status(rv, eventhost_dso_handle));
 	llassert_always(eventhost_dso_handle != NULL);
 
@@ -5066,7 +5143,8 @@ void LLAppViewer::loadEventHostModule(S32 listen_port)
 		llerrs << "problem loading eventhost plugin, status: " << status << llendl;
 	}
 
-	mPlugins.insert(eventhost_dso_handle);
+	// Store the handle and link it to the pool that was used to allocate it.
+	mPlugins[eventhost_dso_handle] = eventhost_dso_memory_pool_ptr;
 }
 
 void LLAppViewer::launchUpdater()
diff --git a/indra/newview/llappviewer.h b/indra/newview/llappviewer.h
index 32115e0e7b..168aaf5d94 100644
--- a/indra/newview/llappviewer.h
+++ b/indra/newview/llappviewer.h
@@ -170,7 +170,7 @@ public:
 	
 	// mute/unmute the system's master audio
 	virtual void setMasterSystemAudioMute(bool mute);
-	virtual bool getMasterSystemAudioMute();
+	virtual bool getMasterSystemAudioMute();	
 
 	// Metrics policy helper statics.
 	static void metricsUpdateRegion(U64 region_handle);
@@ -193,11 +193,12 @@ protected:
 
 private:
 
+	void initMaxHeapSize();
 	bool initThreads(); // Initialize viewer threads, return false on failure.
 	bool initConfiguration(); // Initialize settings from the command line/config file.
 	void initUpdater(); // Initialize the updater service.
 	bool initCache(); // Initialize local client cache.
-
+	void checkMemory() ;
 
 	// We have switched locations of both Mac and Windows cache, make sure
 	// files migrate and old cache is cleared out.
@@ -269,10 +270,9 @@ private:
 
     LLAllocator mAlloc;
 
-	std::set<struct apr_dso_handle_t*> mPlugins;
+	std::map<apr_dso_handle_t*, boost::shared_ptr<LLAPRPool> > mPlugins;
 
-	U32 mAvailPhysicalMemInKB ;
-	U32 mAvailVirtualMemInKB ;
+	LLFrameTimer mMemCheckTimer;
 	
 	boost::scoped_ptr<LLUpdaterService> mUpdater;
 
diff --git a/indra/newview/llappviewerlinux.cpp b/indra/newview/llappviewerlinux.cpp
index 48d02dfeaa..db11462fcb 100644
--- a/indra/newview/llappviewerlinux.cpp
+++ b/indra/newview/llappviewerlinux.cpp
@@ -111,6 +111,7 @@ int main( int argc, char **argv )
 	}
 	delete viewer_app_ptr;
 	viewer_app_ptr = NULL;
+
 	return 0;
 }
 
diff --git a/indra/newview/llappviewerlinux_api_dbus.cpp b/indra/newview/llappviewerlinux_api_dbus.cpp
index 32e7e0a83d..1ae469dfcf 100644
--- a/indra/newview/llappviewerlinux_api_dbus.cpp
+++ b/indra/newview/llappviewerlinux_api_dbus.cpp
@@ -27,11 +27,11 @@
 #if LL_DBUS_ENABLED
 
 #include "linden_common.h"
+#include "llaprpool.h"
 
 extern "C" {
 #include <dbus/dbus-glib.h>
 
-#include "apr_pools.h"
 #include "apr_dso.h"
 }
 
@@ -44,7 +44,7 @@ extern "C" {
 #undef LL_DBUS_SYM
 
 static bool sSymsGrabbed = false;
-static apr_pool_t *sSymDBUSDSOMemoryPool = NULL;
+static LLAPRPool sSymDBUSDSOMemoryPool;
 static apr_dso_handle_t *sSymDBUSDSOHandleG = NULL;
 
 bool grab_dbus_syms(std::string dbus_dso_name)
@@ -63,11 +63,11 @@ bool grab_dbus_syms(std::string dbus_dso_name)
 #define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) do{rv = apr_dso_sym((apr_dso_handle_sym_t*)&ll##DBUSSYM, sSymDBUSDSOHandle, #DBUSSYM); if (rv != APR_SUCCESS) {INFOMSG("Failed to grab symbol: %s", #DBUSSYM); if (REQUIRED) sym_error = true;} else DEBUGMSG("grabbed symbol: %s from %p", #DBUSSYM, (void*)ll##DBUSSYM);}while(0)
 
 	//attempt to load the shared library
-	apr_pool_create(&sSymDBUSDSOMemoryPool, NULL);
+	sSymDBUSDSOMemoryPool.create();
   
 	if ( APR_SUCCESS == (rv = apr_dso_load(&sSymDBUSDSOHandle,
 					       dbus_dso_name.c_str(),
-					       sSymDBUSDSOMemoryPool) ))
+					       sSymDBUSDSOMemoryPool()) ))
 	{
 		INFOMSG("Found DSO: %s", dbus_dso_name.c_str());
 
@@ -109,11 +109,7 @@ void ungrab_dbus_syms()
 		sSymDBUSDSOHandleG = NULL;
 	}
 	
-	if ( sSymDBUSDSOMemoryPool )
-	{
-		apr_pool_destroy(sSymDBUSDSOMemoryPool);
-		sSymDBUSDSOMemoryPool = NULL;
-	}
+	sSymDBUSDSOMemoryPool.destroy();
 	
 	// NULL-out all of the symbols we'd grabbed
 #define LL_DBUS_SYM(REQUIRED, DBUSSYM, RTN, ...) do{ll##DBUSSYM = NULL;}while(0)
diff --git a/indra/newview/llappviewermacosx.cpp b/indra/newview/llappviewermacosx.cpp
index c2916717bd..8929c0c1a4 100644
--- a/indra/newview/llappviewermacosx.cpp
+++ b/indra/newview/llappviewermacosx.cpp
@@ -113,6 +113,7 @@ int main( int argc, char **argv )
 	}
 	delete viewer_app_ptr;
 	viewer_app_ptr = NULL;
+
 	return 0;
 }
 
diff --git a/indra/newview/lldynamictexture.cpp b/indra/newview/lldynamictexture.cpp
index f781d5f3ff..fb9958ee9d 100644
--- a/indra/newview/lldynamictexture.cpp
+++ b/indra/newview/lldynamictexture.cpp
@@ -40,6 +40,7 @@
 #include "llvertexbuffer.h"
 #include "llviewerdisplay.h"
 #include "llrender.h"
+#include "pipeline.h"
 
 // static
 LLViewerDynamicTexture::instance_list_t LLViewerDynamicTexture::sInstances[ LLViewerDynamicTexture::ORDER_COUNT ];
@@ -201,7 +202,7 @@ void LLViewerDynamicTexture::postRender(BOOL success)
 BOOL LLViewerDynamicTexture::updateAllInstances()
 {
 	sNumRenders = 0;
-	if (gGLManager.mIsDisabled)
+	if (gGLManager.mIsDisabled || LLPipeline::sMemAllocationThrottled)
 	{
 		return TRUE;
 	}
diff --git a/indra/newview/llfloateranimpreview.cpp b/indra/newview/llfloateranimpreview.cpp
index 1f334815d6..9f0218a95e 100644
--- a/indra/newview/llfloateranimpreview.cpp
+++ b/indra/newview/llfloateranimpreview.cpp
@@ -223,8 +223,7 @@ BOOL LLFloaterAnimPreview::postBuild()
 		// now load bvh file
 		S32 file_size;
 		
-		LLAPRFile infile ;
-		infile.open(mFilenameAndPath, LL_APR_RB, NULL, &file_size);
+		LLAPRFile infile(mFilenameAndPath, LL_APR_RB, &file_size);
 		
 		if (!infile.getFileHandle())
 		{
diff --git a/indra/newview/llfloatermemleak.cpp b/indra/newview/llfloatermemleak.cpp
index 58931d112e..9edfe1e354 100644
--- a/indra/newview/llfloatermemleak.cpp
+++ b/indra/newview/llfloatermemleak.cpp
@@ -90,6 +90,11 @@ LLFloaterMemLeak::~LLFloaterMemLeak()
 
 void LLFloaterMemLeak::release()
 {
+	if(mLeakedMem.empty())
+	{
+		return ;
+	}
+
 	for(S32 i = 0 ; i < (S32)mLeakedMem.size() ; i++)
 	{
 		delete[] mLeakedMem[i] ;
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index 9f2d97d1fa..a19e17778a 100755
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -388,7 +388,7 @@ mCalculateBtn(NULL)
 	mLastMouseX = 0;
 	mLastMouseY = 0;
 	mGLName = 0;
-	mStatusLock = new LLMutex(NULL);
+	mStatusLock = new LLMutex();
 	mModelPreview = NULL;
 
 	mLODMode[LLModel::LOD_HIGH] = 0;
@@ -3037,7 +3037,7 @@ LLColor4 LLModelLoader::getDaeColor(daeElement* element)
 //-----------------------------------------------------------------------------
 
 LLModelPreview::LLModelPreview(S32 width, S32 height, LLFloater* fmp)
-: LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, FALSE), LLMutex(NULL)
+: LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, FALSE), LLMutex()
 , mPelvisZOffset( 0.0f )
 , mLegacyRigValid( false )
 , mRigValidJointUpload( false )
diff --git a/indra/newview/llmainlooprepeater.cpp b/indra/newview/llmainlooprepeater.cpp
index 5c020e6d98..d73048a28b 100644
--- a/indra/newview/llmainlooprepeater.cpp
+++ b/indra/newview/llmainlooprepeater.cpp
@@ -46,7 +46,7 @@ void LLMainLoopRepeater::start(void)
 {
 	if(mQueue != 0) return;
 
-	mQueue = new LLThreadSafeQueue<LLSD>(gAPRPoolp, 1024);
+	mQueue = new LLThreadSafeQueue<LLSD>(1024);
 	mMainLoopConnection = LLEventPumps::instance().
 		obtain("mainloop").listen(LLEventPump::inventName(), boost::bind(&LLMainLoopRepeater::onMainLoop, this, _1));
 	mRepeaterConnection = LLEventPumps::instance().
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index 25ae514274..e12f140747 100755
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -444,12 +444,12 @@ public:
 };
 
 LLMeshRepoThread::LLMeshRepoThread()
-: LLThread("mesh repo", NULL) 
+: LLThread("mesh repo") 
 { 
 	mWaiting = false;
-	mMutex = new LLMutex(NULL);
-	mHeaderMutex = new LLMutex(NULL);
-	mSignal = new LLCondition(NULL);
+	mMutex = new LLMutex();
+	mHeaderMutex = new LLMutex();
+	mSignal = new LLCondition();
 }
 
 LLMeshRepoThread::~LLMeshRepoThread()
@@ -1198,7 +1198,7 @@ LLMeshUploadThread::LLMeshUploadThread(LLMeshUploadThread::instance_list& data,
 	mUploadTextures = upload_textures;
 	mUploadSkin = upload_skin;
 	mUploadJoints = upload_joints;
-	mMutex = new LLMutex(NULL);
+	mMutex = new LLMutex();
 	mCurlRequest = NULL;
 	mPendingUploads = 0;
 	mFinished = false;
@@ -2043,7 +2043,7 @@ LLMeshRepository::LLMeshRepository()
 
 void LLMeshRepository::init()
 {
-	mMeshMutex = new LLMutex(NULL);
+	mMeshMutex = new LLMutex();
 	
 	LLConvexDecomposition::getInstance()->initSystem();
 
@@ -2866,8 +2866,8 @@ LLPhysicsDecomp::LLPhysicsDecomp()
 	mQuitting = false;
 	mDone = false;
 
-	mSignal = new LLCondition(NULL);
-	mMutex = new LLMutex(NULL);
+	mSignal = new LLCondition();
+	mMutex = new LLMutex();
 }
 
 LLPhysicsDecomp::~LLPhysicsDecomp()
diff --git a/indra/newview/llsidetray.cpp b/indra/newview/llsidetray.cpp
index 651897a217..a7c4057846 100644
--- a/indra/newview/llsidetray.cpp
+++ b/indra/newview/llsidetray.cpp
@@ -496,7 +496,7 @@ public:
 		LLSideTray* side_tray = LLSideTray::getInstance();
 
 		// Check if the tab we are dragging is docked.
-		if (!side_tray->isTabAttached(getName())) return FALSE;
+		if (!side_tray->isTabAttached(mTabName)) return FALSE;
 
 		// Same value is hardcoded in LLDragHandle::handleHover().
 		const S32 undock_threshold = 12;
@@ -505,7 +505,7 @@ public:
 		if (delta_x <= -undock_threshold ||	delta_x >= undock_threshold	||
 			delta_y <= -undock_threshold ||	delta_y >= undock_threshold)
 		{
-			LLSideTrayTab* tab = side_tray->getTab(getName());
+			LLSideTrayTab* tab = side_tray->getTab(mTabName);
 			if (!tab) return FALSE;
 
 			tab->setDocked(false);
@@ -544,7 +544,12 @@ protected:
 		, mDragLastScreenX(0)
 		, mDragLastScreenY(0)
 		, mBadgeDriver(NULL)
-	{}
+	{
+		// Find out the tab name to use in handleHover().
+		size_t pos = getName().find("_button");
+		llassert(pos != std::string::npos);
+		mTabName = getName().substr(0, pos);
+	}
 
 	friend class LLUICtrlFactory;
 
@@ -562,6 +567,7 @@ private:
 	S32		mDragLastScreenX;
 	S32		mDragLastScreenY;
 
+	std::string					mTabName;
 	LLSideTrayTabBadgeDriver*	mBadgeDriver;
 };
 
@@ -679,6 +685,7 @@ LLSideTrayTab* LLSideTray::getTab(const std::string& name)
 bool LLSideTray::isTabAttached(const std::string& name)
 {
 	LLSideTrayTab* tab = getTab(name);
+	llassert(tab);
 	if (!tab) return false;
 
 	return std::find(mTabs.begin(), mTabs.end(), tab) != mTabs.end();
diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 9b417307fd..87b6304f9d 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -113,7 +113,7 @@ public:
 	~LLTextureCacheWorker()
 	{
 		llassert_always(!haveWork());
-		delete[] mReadData;
+		FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 	}
 
 	// override this interface
@@ -176,7 +176,7 @@ private:
 
 bool LLTextureCacheLocalFileWorker::doRead()
 {
-	S32 local_size = LLAPRFile::size(mFileName, mCache->getLocalAPRFilePool());
+	S32 local_size = LLAPRFile::size(mFileName);
 
 	if (local_size > 0 && mFileName.size() > 4)
 	{
@@ -215,7 +215,7 @@ bool LLTextureCacheLocalFileWorker::doRead()
 			mDataSize = 0;
 			return true;
 		}
-		mReadData = new U8[mDataSize];
+		mReadData = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), mDataSize);
 		mBytesRead = -1;
 		mBytesToRead = mDataSize;
 		setPriority(LLWorkerThread::PRIORITY_LOW | mPriority);
@@ -233,7 +233,7 @@ bool LLTextureCacheLocalFileWorker::doRead()
 // 						<< " Bytes: " << mDataSize << " Offset: " << mOffset
 // 						<< " / " << mDataSize << llendl;
 				mDataSize = 0; // failed
-				delete[] mReadData;
+				FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 				mReadData = NULL;
 			}
 			return true;
@@ -248,9 +248,9 @@ bool LLTextureCacheLocalFileWorker::doRead()
 	{
 		mDataSize = local_size;
 	}
-	mReadData = new U8[mDataSize];
+	mReadData = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), mDataSize);
 	
-	S32 bytes_read = LLAPRFile::readEx(mFileName, mReadData, mOffset, mDataSize, mCache->getLocalAPRFilePool());	
+	S32 bytes_read = LLAPRFile::readEx(mFileName, mReadData, mOffset, mDataSize);
 
 	if (bytes_read != mDataSize)
 	{
@@ -258,7 +258,7 @@ bool LLTextureCacheLocalFileWorker::doRead()
 // 				<< " Bytes: " << mDataSize << " Offset: " << mOffset
 // 				<< " / " << mDataSize << llendl;
 		mDataSize = 0;
-		delete[] mReadData;
+		FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 		mReadData = NULL;
 	}
 	else
@@ -331,7 +331,7 @@ bool LLTextureCacheRemoteWorker::doRead()
 		// Is it a JPEG2000 file? 
 		{
 			local_filename = filename + ".j2c";
-			local_size = LLAPRFile::size(local_filename, mCache->getLocalAPRFilePool());
+			local_size = LLAPRFile::size(local_filename);
 			if (local_size > 0)
 			{
 				mImageFormat = IMG_CODEC_J2C;
@@ -341,7 +341,7 @@ bool LLTextureCacheRemoteWorker::doRead()
 		if (local_size == 0)
 		{
 			local_filename = filename + ".jpg";
-			local_size = LLAPRFile::size(local_filename, mCache->getLocalAPRFilePool());
+			local_size = LLAPRFile::size(local_filename);
 			if (local_size > 0)
 			{
 				mImageFormat = IMG_CODEC_JPEG;
@@ -352,7 +352,7 @@ bool LLTextureCacheRemoteWorker::doRead()
 		if (local_size == 0)
 		{
 			local_filename = filename + ".tga";
-			local_size = LLAPRFile::size(local_filename, mCache->getLocalAPRFilePool());
+			local_size = LLAPRFile::size(local_filename);
 			if (local_size > 0)
 			{
 				mImageFormat = IMG_CODEC_TGA;
@@ -377,16 +377,15 @@ bool LLTextureCacheRemoteWorker::doRead()
 			mDataSize = local_size;
 		}
 		// Allocate read buffer
-		mReadData = new U8[mDataSize];
-		S32 bytes_read = LLAPRFile::readEx(local_filename, 
-											 mReadData, mOffset, mDataSize, mCache->getLocalAPRFilePool());
+		mReadData = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), mDataSize);
+		S32 bytes_read = LLAPRFile::readEx(local_filename, mReadData, mOffset, mDataSize);
 		if (bytes_read != mDataSize)
 		{
  			llwarns << "Error reading file from local cache: " << local_filename
  					<< " Bytes: " << mDataSize << " Offset: " << mOffset
  					<< " / " << mDataSize << llendl;
 			mDataSize = 0;
-			delete[] mReadData;
+			FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 			mReadData = NULL;
 		}
 		else
@@ -429,15 +428,14 @@ bool LLTextureCacheRemoteWorker::doRead()
 		S32 size = TEXTURE_CACHE_ENTRY_SIZE - mOffset;
 		size = llmin(size, mDataSize);
 		// Allocate the read buffer
-		mReadData = new U8[size];
-		S32 bytes_read = LLAPRFile::readEx(mCache->mHeaderDataFileName, 
-											 mReadData, offset, size, mCache->getLocalAPRFilePool());
+		mReadData = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), size);
+		S32 bytes_read = LLAPRFile::readEx(mCache->mHeaderDataFileName, mReadData, offset, size);
 		if (bytes_read != size)
 		{
 			llwarns << "LLTextureCacheWorker: "  << mID
 					<< " incorrect number of bytes read from header: " << bytes_read
 					<< " / " << size << llendl;
-			delete[] mReadData;
+			FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 			mReadData = NULL;
 			mDataSize = -1; // failed
 			done = true;
@@ -457,7 +455,7 @@ bool LLTextureCacheRemoteWorker::doRead()
 	if (!done && (mState == BODY))
 	{
 		std::string filename = mCache->getTextureFileName(mID);
-		S32 filesize = LLAPRFile::size(filename, mCache->getLocalAPRFilePool());
+		S32 filesize = LLAPRFile::size(filename);
 
 		if (filesize && (filesize + TEXTURE_CACHE_ENTRY_SIZE) > mOffset)
 		{
@@ -467,7 +465,7 @@ bool LLTextureCacheRemoteWorker::doRead()
 			S32 data_offset, file_size, file_offset;
 			
 			// Reserve the whole data buffer first
-			U8* data = new U8[mDataSize];
+			U8* data = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), mDataSize);
 
 			// Set the data file pointers taking the read offset into account. 2 cases:
 			if (mOffset < TEXTURE_CACHE_ENTRY_SIZE)
@@ -480,7 +478,7 @@ bool LLTextureCacheRemoteWorker::doRead()
 				// Copy the raw data we've been holding from the header cache into the new sized buffer
 				llassert_always(mReadData);
 				memcpy(data, mReadData, data_offset);
-				delete[] mReadData;
+				FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 				mReadData = NULL;
 			}
 			else
@@ -499,14 +497,13 @@ bool LLTextureCacheRemoteWorker::doRead()
 			// Read the data at last
 			S32 bytes_read = LLAPRFile::readEx(filename, 
 											 mReadData + data_offset,
-											 file_offset, file_size,
-											 mCache->getLocalAPRFilePool());
+											 file_offset, file_size);
 			if (bytes_read != file_size)
 			{
 				llwarns << "LLTextureCacheWorker: "  << mID
 						<< " incorrect number of bytes read from body: " << bytes_read
 						<< " / " << file_size << llendl;
-				delete[] mReadData;
+				FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 				mReadData = NULL;
 				mDataSize = -1; // failed
 				done = true;
@@ -598,16 +595,16 @@ bool LLTextureCacheRemoteWorker::doWrite()
 		{
 			// We need to write a full record in the header cache so, if the amount of data is smaller
 			// than a record, we need to transfer the data to a buffer padded with 0 and write that
-			U8* padBuffer = new U8[TEXTURE_CACHE_ENTRY_SIZE];
+			U8* padBuffer = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), TEXTURE_CACHE_ENTRY_SIZE);
 			memset(padBuffer, 0, TEXTURE_CACHE_ENTRY_SIZE);		// Init with zeros
 			memcpy(padBuffer, mWriteData, mDataSize);			// Copy the write buffer
-			bytes_written = LLAPRFile::writeEx(mCache->mHeaderDataFileName, padBuffer, offset, size, mCache->getLocalAPRFilePool());
-			delete [] padBuffer;
+			bytes_written = LLAPRFile::writeEx(mCache->mHeaderDataFileName, padBuffer, offset, size);
+			FREE_MEM(LLImageBase::getPrivatePool(), padBuffer);
 		}
 		else
 		{
 			// Write the header record (== first TEXTURE_CACHE_ENTRY_SIZE bytes of the raw file) in the header file
-			bytes_written = LLAPRFile::writeEx(mCache->mHeaderDataFileName, mWriteData, offset, size, mCache->getLocalAPRFilePool());
+			bytes_written = LLAPRFile::writeEx(mCache->mHeaderDataFileName, mWriteData, offset, size);
 		}
 
 		if (bytes_written <= 0)
@@ -642,8 +639,7 @@ bool LLTextureCacheRemoteWorker::doWrite()
 // 			llinfos << "Writing Body: " << filename << " Bytes: " << file_offset+file_size << llendl;
 			S32 bytes_written = LLAPRFile::writeEx(	filename, 
 													mWriteData + TEXTURE_CACHE_ENTRY_SIZE,
-													0, file_size,
-													mCache->getLocalAPRFilePool());
+													0, file_size);
 			if (bytes_written <= 0)
 			{
 				llwarns << "LLTextureCacheWorker: "  << mID
@@ -698,7 +694,7 @@ void LLTextureCacheWorker::finishWork(S32 param, bool completed)
 			}
 			else
 			{
-				delete[] mReadData;
+				FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
 				mReadData = NULL;
 			}
 		}
@@ -740,9 +736,6 @@ void LLTextureCacheWorker::endWork(S32 param, bool aborted)
 
 LLTextureCache::LLTextureCache(bool threaded)
 	: LLWorkerThread("TextureCache", threaded),
-	  mWorkersMutex(NULL),
-	  mHeaderMutex(NULL),
-	  mListMutex(NULL),
 	  mHeaderAPRFile(NULL),
 	  mReadOnly(TRUE), //do not allow to change the texture cache until setReadOnly() is called.
 	  mTexturesSizeTotal(0),
@@ -846,7 +839,7 @@ BOOL LLTextureCache::isInLocal(const LLUUID& id)
 	// Is it a JPEG2000 file? 
 	{
 		local_filename = filename + ".j2c";
-		local_size = LLAPRFile::size(local_filename, getLocalAPRFilePool());
+		local_size = LLAPRFile::size(local_filename);
 		if (local_size > 0)
 		{
 			return TRUE ;
@@ -856,7 +849,7 @@ BOOL LLTextureCache::isInLocal(const LLUUID& id)
 	// If not, is it a jpeg file?		
 	{
 		local_filename = filename + ".jpg";
-		local_size = LLAPRFile::size(local_filename, getLocalAPRFilePool());
+		local_size = LLAPRFile::size(local_filename);
 		if (local_size > 0)
 		{
 			return TRUE ;
@@ -866,7 +859,7 @@ BOOL LLTextureCache::isInLocal(const LLUUID& id)
 	// Hmm... What about a targa file? (used for UI texture mostly)		
 	{
 		local_filename = filename + ".tga";
-		local_size = LLAPRFile::size(local_filename, getLocalAPRFilePool());
+		local_size = LLAPRFile::size(local_filename);
 		if (local_size > 0)
 		{
 			return TRUE ;
@@ -912,10 +905,10 @@ void LLTextureCache::purgeCache(ELLPath location)
 		if(LLFile::isdir(mTexturesDirName))
 		{
 			std::string file_name = gDirUtilp->getExpandedFilename(location, entries_filename);
-			LLAPRFile::remove(file_name, getLocalAPRFilePool());
+			LLAPRFile::remove(file_name);
 
 			file_name = gDirUtilp->getExpandedFilename(location, cache_filename);
-			LLAPRFile::remove(file_name, getLocalAPRFilePool());
+			LLAPRFile::remove(file_name);
 
 			purgeAllTextures(true);
 		}
@@ -991,7 +984,9 @@ LLAPRFile* LLTextureCache::openHeaderEntriesFile(bool readonly, S32 offset)
 {
 	llassert_always(mHeaderAPRFile == NULL);
 	apr_int32_t flags = readonly ? APR_READ|APR_BINARY : APR_READ|APR_WRITE|APR_BINARY;
-	mHeaderAPRFile = new LLAPRFile(mHeaderEntriesFileName, flags, getLocalAPRFilePool());
+	// All code calling openHeaderEntriesFile, immediately calls closeHeaderEntriesFile,
+	// so this file is very short-lived.
+	mHeaderAPRFile = new LLAPRFile(mHeaderEntriesFileName, flags);
 	if(offset > 0)
 	{
 		mHeaderAPRFile->seek(APR_SET, offset);
@@ -1014,10 +1009,9 @@ void LLTextureCache::readEntriesHeader()
 {
 	// mHeaderEntriesInfo initializes to default values so safe not to read it
 	llassert_always(mHeaderAPRFile == NULL);
-	if (LLAPRFile::isExist(mHeaderEntriesFileName, getLocalAPRFilePool()))
+	if (LLAPRFile::isExist(mHeaderEntriesFileName))
 	{
-		LLAPRFile::readEx(mHeaderEntriesFileName, (U8*)&mHeaderEntriesInfo, 0, sizeof(EntriesInfo),
-						  getLocalAPRFilePool());
+		LLAPRFile::readEx(mHeaderEntriesFileName, (U8*)&mHeaderEntriesInfo, 0, sizeof(EntriesInfo));
 	}
 	else //create an empty entries header.
 	{
@@ -1032,8 +1026,7 @@ void LLTextureCache::writeEntriesHeader()
 	llassert_always(mHeaderAPRFile == NULL);
 	if (!mReadOnly)
 	{
-		LLAPRFile::writeEx(mHeaderEntriesFileName, (U8*)&mHeaderEntriesInfo, 0, sizeof(EntriesInfo),
-						   getLocalAPRFilePool());
+		LLAPRFile::writeEx(mHeaderEntriesFileName, (U8*)&mHeaderEntriesInfo, 0, sizeof(EntriesInfo));
 	}
 }
 
@@ -1622,7 +1615,7 @@ void LLTextureCache::purgeTextures(bool validate)
 			if (uuididx == validate_idx)
 			{
  				LL_DEBUGS("TextureCache") << "Validating: " << filename << "Size: " << entries[idx].mBodySize << LL_ENDL;
-				S32 bodysize = LLAPRFile::size(filename, getLocalAPRFilePool());
+				S32 bodysize = LLAPRFile::size(filename);
 				if (bodysize != entries[idx].mBodySize)
 				{
 					LL_WARNS("TextureCache") << "TEXTURE CACHE BODY HAS BAD SIZE: " << bodysize << " != " << entries[idx].mBodySize
@@ -1857,7 +1850,7 @@ void LLTextureCache::removeCachedTexture(const LLUUID& id)
 		mTexturesSizeMap.erase(id);
 	}
 	mHeaderIDMap.erase(id);
-	LLAPRFile::remove(getTextureFileName(id), getLocalAPRFilePool());		
+	LLAPRFile::remove(getTextureFileName(id));		
 }
 
 //called after mHeaderMutex is locked.
@@ -1869,7 +1862,7 @@ void LLTextureCache::removeEntry(S32 idx, Entry& entry, std::string& filename)
 	{
 		if (entry.mBodySize == 0)	// Always attempt to remove when mBodySize > 0.
 		{
-		  if (LLAPRFile::isExist(filename, getLocalAPRFilePool()))		// Sanity check. Shouldn't exist when body size is 0.
+		  if (LLAPRFile::isExist(filename))		// Sanity check. Shouldn't exist when body size is 0.
 		  {
 			  LL_WARNS("TextureCache") << "Entry has body size of zero but file " << filename << " exists. Deleting this file, too." << LL_ENDL;
 		  }
@@ -1890,7 +1883,7 @@ void LLTextureCache::removeEntry(S32 idx, Entry& entry, std::string& filename)
 
 	if (file_maybe_exists)
 	{
-		LLAPRFile::remove(filename, getLocalAPRFilePool());		
+		LLAPRFile::remove(filename);
 	}
 }
 
diff --git a/indra/newview/lltexturecache.h b/indra/newview/lltexturecache.h
index 64e3a2658c..79f5ba5835 100644
--- a/indra/newview/lltexturecache.h
+++ b/indra/newview/lltexturecache.h
@@ -142,9 +142,6 @@ protected:
 	std::string getTextureFileName(const LLUUID& id);
 	void addCompleted(Responder* responder, bool success);
 	
-protected:
-	//void setFileAPRPool(apr_pool_t* pool) { mFileAPRPool = pool ; }
-
 private:
 	void setDirNames(ELLPath location);
 	void readHeaderCache();
diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index 18c3a3b87d..e9be45ffd0 100644
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -674,7 +674,6 @@ LLTextureFetchWorker::LLTextureFetchWorker(LLTextureFetch* fetcher,
 	  mRetryAttempt(0),
 	  mActiveCount(0),
 	  mGetStatus(0),
-	  mWorkMutex(NULL),
 	  mFirstPacket(0),
 	  mLastPacket(-1),
 	  mTotalPackets(0),
@@ -817,7 +816,7 @@ void LLTextureFetchWorker::setImagePriority(F32 priority)
 
 void LLTextureFetchWorker::resetFormattedData()
 {
-	delete[] mBuffer;
+	FREE_MEM(LLImageBase::getPrivatePool(), mBuffer);
 	mBuffer = NULL;
 	mBufferSize = 0;
 	if (mFormattedImage.notNull())
@@ -888,7 +887,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 		mSentRequest = UNSENT;
 		mDecoded  = FALSE;
 		mWritten  = FALSE;
-		delete[] mBuffer;
+		FREE_MEM(LLImageBase::getPrivatePool(), mBuffer);
 		mBuffer = NULL;
 		mBufferSize = 0;
 		mHaveAllData = FALSE;
@@ -1284,7 +1283,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			llassert_always(mBufferSize == cur_size + mRequestedSize);
 			if(!mBufferSize)//no data received.
 			{
-				delete[] mBuffer; 
+				FREE_MEM(LLImageBase::getPrivatePool(), mBuffer); 
 				mBuffer = NULL;
 
 				//abort.
@@ -1312,7 +1311,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				mFileSize = mBufferSize + 1 ; //flag the file is not fully loaded.
 			}
 			
-			U8* buffer = new U8[mBufferSize];
+			U8* buffer = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), mBufferSize);
 			if (cur_size > 0)
 			{
 				memcpy(buffer, mFormattedImage->getData(), cur_size);
@@ -1321,7 +1320,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			// NOTE: setData releases current data and owns new data (buffer)
 			mFormattedImage->setData(buffer, mBufferSize);
 			// delete temp data
-			delete[] mBuffer; // Note: not 'buffer' (assigned in setData())
+			FREE_MEM(LLImageBase::getPrivatePool(), mBuffer); // Note: not 'buffer' (assigned in setData())
 			mBuffer = NULL;
 			mBufferSize = 0;
 			mLoadedDiscard = mRequestedDiscard;
@@ -1618,7 +1617,7 @@ bool LLTextureFetchWorker::processSimulatorPackets()
 			if (buffer_size > cur_size)
 			{
 				/// We have new data
-				U8* buffer = new U8[buffer_size];
+				U8* buffer = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), buffer_size);
 				S32 offset = 0;
 				if (cur_size > 0 && mFirstPacket > 0)
 				{
@@ -1670,7 +1669,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(const LLChannelDescriptors& channels,
 		if (data_size > 0)
 		{
 			// *TODO: set the formatted image data here directly to avoid the copy
-			mBuffer = new U8[data_size];
+			mBuffer = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), data_size);
 			buffer->readAfter(channels.in(), NULL, mBuffer, data_size);
 			mBufferSize += data_size;
 			if (data_size < mRequestedSize && mRequestedDiscard == 0)
@@ -1816,8 +1815,6 @@ LLTextureFetch::LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* image
 	  mDebugPause(FALSE),
 	  mPacketCount(0),
 	  mBadPacketCount(0),
-	  mQueueMutex(getAPRPool()),
-	  mNetworkQueueMutex(getAPRPool()),
 	  mTextureCache(cache),
 	  mImageDecodeThread(imagedecodethread),
 	  mTextureBandwidth(0),
diff --git a/indra/newview/lltoastnotifypanel.cpp b/indra/newview/lltoastnotifypanel.cpp
index fa91f129b8..6873cf058a 100644
--- a/indra/newview/lltoastnotifypanel.cpp
+++ b/indra/newview/lltoastnotifypanel.cpp
@@ -307,8 +307,14 @@ void LLToastNotifyPanel::updateButtonsLayout(const std::vector<index_button_pair
 	S32 bottom_offset = mIsScriptDialog ? (BTN_HEIGHT + IGNORE_BTN_TOP_DELTA + BOTTOM_PAD) : BOTTOM_PAD;
 	S32 max_width = mControlPanel->getRect().getWidth();
 	LLButton* ignore_btn = NULL;
+	LLButton* mute_btn = NULL;
 	for (std::vector<index_button_pair_t>::const_iterator it = buttons.begin(); it != buttons.end(); it++)
 	{
+		if (-2 == it->first)
+		{
+			mute_btn = it->second;
+			continue;
+		}
 		if (it->first == -1)
 		{
 			ignore_btn = it->second;
@@ -328,6 +334,8 @@ void LLToastNotifyPanel::updateButtonsLayout(const std::vector<index_button_pair
 		left = btn_rect.mLeft + btn_rect.getWidth() + h_pad;
 		mControlPanel->addChild(btn, -1);
 	}
+
+	U32 ignore_btn_width = 0;
 	if (mIsScriptDialog && ignore_btn != NULL)
 	{
 		LLRect ignore_btn_rect(ignore_btn->getRect());
@@ -340,8 +348,25 @@ void LLToastNotifyPanel::updateButtonsLayout(const std::vector<index_button_pair
 		ignore_btn_rect.setOriginAndSize(ignore_btn_left, BOTTOM_PAD,// always move ignore button at the bottom
 				ignore_btn_rect.getWidth(), ignore_btn_rect.getHeight());
 		ignore_btn->setRect(ignore_btn_rect);
+		ignore_btn_width = ignore_btn_rect.getWidth();
 		mControlPanel->addChild(ignore_btn, -1);
 	}
+
+	if (mIsScriptDialog && mute_btn != NULL)
+	{
+		LLRect mute_btn_rect(mute_btn->getRect());
+		S32 buttons_per_row = max_width / BUTTON_WIDTH; //assume that h_pad far less than BUTTON_WIDTH
+		// Place mute (Block) button to the left of the ignore button.
+		S32 mute_btn_left = buttons_per_row * BUTTON_WIDTH + (buttons_per_row	- 1) * h_pad - mute_btn_rect.getWidth() - ignore_btn_width - (h_pad / 2);
+		if (mute_btn_left + mute_btn_rect.getWidth() > max_width) // make sure that the mute button is in panel
+		{
+			mute_btn_left = max_width - mute_btn_rect.getWidth() - 2 * HPAD;
+		}
+		mute_btn_rect.setOriginAndSize(mute_btn_left, BOTTOM_PAD,// always move mute button at the bottom
+				mute_btn_rect.getWidth(), mute_btn_rect.getHeight());
+		mute_btn->setRect(mute_btn_rect);
+		mControlPanel->addChild(mute_btn);
+	}
 }
 
 void LLToastNotifyPanel::adjustPanelForScriptNotice(S32 button_panel_width, S32 button_panel_height)
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index 39053fe9e4..6142ee0dd6 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -202,6 +202,7 @@ void display_stats()
 		gMemoryAllocated = LLMemory::getCurrentRSS();
 		U32 memory = (U32)(gMemoryAllocated / (1024*1024));
 		llinfos << llformat("MEMORY: %d MB", memory) << llendl;
+		LLMemory::logMemoryInfo() ;
 		gRecentMemoryTime.reset();
 	}
 }
@@ -692,7 +693,11 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 				glh::matrix4f mod = glh_get_current_modelview();
 				glViewport(0,0,512,512);
 				LLVOAvatar::updateFreezeCounter() ;
-				LLVOAvatar::updateImpostors();
+
+				if(!LLPipeline::sMemAllocationThrottled)
+				{		
+					LLVOAvatar::updateImpostors();
+				}
 
 				glh_set_current_projection(proj);
 				glh_set_current_modelview(mod);
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index b29821479b..26599f557e 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -116,6 +116,8 @@
 
 using namespace LLVOAvatarDefines;
 
+typedef LLPointer<LLViewerObject> LLViewerObjectPtr;
+
 static boost::unordered_map<std::string, LLStringExplicit> sDefaultItemLabels;
 
 BOOL enable_land_build(void*);
@@ -4010,23 +4012,21 @@ void handle_god_request_avatar_geometry(void *)
 	}
 }
 
-
-void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
+static bool get_derezzable_objects(
+	EDeRezDestination dest,
+	std::string& error,
+	LLViewerRegion*& first_region,
+	LLDynamicArray<LLViewerObjectPtr>* derez_objectsp,
+	bool only_check = false)
 {
-	if(gAgentCamera.cameraMouselook())
-	{
-		gAgentCamera.changeCameraToDefault();
-	}
-	//gInventoryView->setPanelOpen(TRUE);
+	bool found = false;
 
-	std::string error;
-	LLDynamicArray<LLViewerObject*> derez_objects;
+	LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
 	
 	// Check conditions that we can't deal with, building a list of
 	// everything that we'll actually be derezzing.
-	LLViewerRegion* first_region = NULL;
-	for (LLObjectSelection::valid_root_iterator iter = LLSelectMgr::getInstance()->getSelection()->valid_root_begin();
-		 iter != LLSelectMgr::getInstance()->getSelection()->valid_root_end(); iter++)
+	for (LLObjectSelection::valid_root_iterator iter = selection->valid_root_begin();
+		 iter != selection->valid_root_end(); iter++)
 	{
 		LLSelectNode* node = *iter;
 		LLViewerObject* object = node->getObject();
@@ -4093,8 +4093,53 @@ void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
 		}
 		if(can_derez_current)
 		{
-			derez_objects.put(object);
+			found = true;
+
+			if (only_check)
+				// one found, no need to traverse to the end
+				break;
+
+			if (derez_objectsp)
+				derez_objectsp->put(object);
+
+		}
+	}
+
+	return found;
+}
+
+static bool can_derez(EDeRezDestination dest)
+{
+	LLViewerRegion* first_region = NULL;
+	std::string error;
+	return get_derezzable_objects(dest, error, first_region, NULL, true);
+}
+
+static void derez_objects(
+	EDeRezDestination dest,
+	const LLUUID& dest_id,
+	LLViewerRegion*& first_region,
+	std::string& error,
+	LLDynamicArray<LLViewerObjectPtr>* objectsp)
+{
+	LLDynamicArray<LLViewerObjectPtr> derez_objects;
+
+	if (!objectsp) // if objects to derez not specified
+	{
+		// get them from selection
+		if (!get_derezzable_objects(dest, error, first_region, &derez_objects, false))
+		{
+			llwarns << "No objects to derez" << llendl;
+			return;
 		}
+
+		objectsp = &derez_objects;
+	}
+
+
+	if(gAgentCamera.cameraMouselook())
+	{
+		gAgentCamera.changeCameraToDefault();
 	}
 
 	// This constant is based on (1200 - HEADER_SIZE) / 4 bytes per
@@ -4104,13 +4149,13 @@ void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
 	// satisfy anybody.
 	const S32 MAX_ROOTS_PER_PACKET = 250;
 	const S32 MAX_PACKET_COUNT = 254;
-	F32 packets = ceil((F32)derez_objects.count() / (F32)MAX_ROOTS_PER_PACKET);
+	F32 packets = ceil((F32)objectsp->count() / (F32)MAX_ROOTS_PER_PACKET);
 	if(packets > (F32)MAX_PACKET_COUNT)
 	{
 		error = "AcquireErrorTooManyObjects";
 	}
 
-	if(error.empty() && derez_objects.count() > 0)
+	if(error.empty() && objectsp->count() > 0)
 	{
 		U8 d = (U8)dest;
 		LLUUID tid;
@@ -4135,11 +4180,11 @@ void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
 			msg->addU8Fast(_PREHASH_PacketCount, packet_count);
 			msg->addU8Fast(_PREHASH_PacketNumber, packet_number);
 			objects_in_packet = 0;
-			while((object_index < derez_objects.count())
+			while((object_index < objectsp->count())
 				  && (objects_in_packet++ < MAX_ROOTS_PER_PACKET))
 
 			{
-				LLViewerObject* object = derez_objects.get(object_index++);
+				LLViewerObject* object = objectsp->get(object_index++);
 				msg->nextBlockFast(_PREHASH_ObjectData);
 				msg->addU32Fast(_PREHASH_ObjectLocalID, object->getLocalID());
 				// VEFFECT: DerezObject
@@ -4164,6 +4209,13 @@ void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
 	}
 }
 
+static void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
+{
+	LLViewerRegion* first_region = NULL;
+	std::string error;
+	derez_objects(dest, dest_id, first_region, error, NULL);
+}
+
 void handle_take_copy()
 {
 	if (LLSelectMgr::getInstance()->getSelection()->isEmpty()) return;
@@ -4175,12 +4227,19 @@ void handle_take_copy()
 // You can return an object to its owner if it is on your land.
 class LLObjectReturn : public view_listener_t
 {
+public:
+	LLObjectReturn() : mFirstRegion(NULL) {}
+
+private:
 	bool handleEvent(const LLSD& userdata)
 	{
 		if (LLSelectMgr::getInstance()->getSelection()->isEmpty()) return true;
 		
 		mObjectSelection = LLSelectMgr::getInstance()->getEditSelection();
 
+		// Save selected objects, so that we still know what to return after the confirmation dialog resets selection.
+		get_derezzable_objects(DRD_RETURN_TO_OWNER, mError, mFirstRegion, &mReturnableObjects);
+
 		LLNotificationsUtil::add("ReturnToOwner", LLSD(), LLSD(), boost::bind(&LLObjectReturn::onReturnToOwner, this, _1, _2));
 		return true;
 	}
@@ -4191,16 +4250,23 @@ class LLObjectReturn : public view_listener_t
 		if (0 == option)
 		{
 			// Ignore category ID for this derez destination.
-			derez_objects(DRD_RETURN_TO_OWNER, LLUUID::null);
+			derez_objects(DRD_RETURN_TO_OWNER, LLUUID::null, mFirstRegion, mError, &mReturnableObjects);
 		}
 
+		mReturnableObjects.clear();
+		mError.clear();
+		mFirstRegion = NULL;
+
 		// drop reference to current selection
 		mObjectSelection = NULL;
 		return false;
 	}
 
-protected:
 	LLObjectSelectionHandle mObjectSelection;
+
+	LLDynamicArray<LLViewerObjectPtr> mReturnableObjects;
+	std::string mError;
+	LLViewerRegion* mFirstRegion;
 };
 
 
@@ -4225,29 +4291,7 @@ class LLObjectEnableReturn : public view_listener_t
 		}
 		else
 		{
-			LLViewerRegion* region = gAgent.getRegion();
-			if (region)
-			{
-				// Estate owners and managers can always return objects.
-				if (region->canManageEstate())
-				{
-					new_value = true;
-				}
-				else
-				{
-					struct f : public LLSelectedObjectFunctor
-					{
-						virtual bool apply(LLViewerObject* obj)
-						{
-							return 
-								obj->permModify() ||
-								obj->isReturnable();
-						}
-					} func;
-					const bool firstonly = true;
-					new_value = LLSelectMgr::getInstance()->getSelection()->applyToRootObjects(&func, firstonly);
-				}
-			}
+			new_value = can_derez(DRD_RETURN_TO_OWNER);
 		}
 #endif
 		return new_value;
diff --git a/indra/newview/llviewermenufile.cpp b/indra/newview/llviewermenufile.cpp
index b9293b3b31..8139f7deda 100644
--- a/indra/newview/llviewermenufile.cpp
+++ b/indra/newview/llviewermenufile.cpp
@@ -149,7 +149,7 @@ void LLFilePickerThread::run()
 //static
 void LLFilePickerThread::initClass()
 {
-	sMutex = new LLMutex(NULL);
+	sMutex = new LLMutex();
 }
 
 //static
@@ -816,8 +816,7 @@ LLUUID upload_new_resource(
 		uuid = tid.makeAssetID(gAgent.getSecureSessionID());
 		// copy this file into the vfs for upload
 		S32 file_size;
-		LLAPRFile infile ;
-		infile.open(filename, LL_APR_RB, NULL, &file_size);
+		LLAPRFile infile(filename, LL_APR_RB, &file_size);
 		if (infile.getFileHandle())
 		{
 			LLVFile file(gVFS, uuid, asset_type, LLVFile::WRITE);
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index 64aeb750c6..68745d5aeb 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -6516,8 +6516,24 @@ bool callback_script_dialog(const LLSD& notification, const LLSD& response)
 		rtn_text = LLNotification::getSelectedOptionName(response);
 	}
 
-	// Didn't click "Ignore"
-	if (button_idx != -1)
+	// Button -2 = Mute
+	// Button -1 = Ignore - no processing needed for this button
+	// Buttons 0 and above = dialog choices
+
+	if (-2 == button_idx)
+	{
+		std::string object_name = notification["payload"]["object_name"].asString();
+		LLUUID object_id = notification["payload"]["object_id"].asUUID();
+		LLMute mute(object_id, object_name, LLMute::OBJECT);
+		if (LLMuteList::getInstance()->add(mute))
+		{
+			// This call opens the sidebar, displays the block list, and highlights the newly blocked
+			// object in the list so the user can see that their block click has taken effect.
+			LLPanelBlockedList::showPanelAndSelect(object_id);
+		}
+	}
+
+	if (0 <= button_idx)
 	{
 		LLMessageSystem* msg = gMessageSystem;
 		msg->newMessage("ScriptDialogReply");
@@ -6560,12 +6576,12 @@ void process_script_dialog(LLMessageSystem* msg, void**)
 	std::string message; 
 	std::string first_name;
 	std::string last_name;
-	std::string title;
+	std::string object_name;
 
 	S32 chat_channel;
 	msg->getString("Data", "FirstName", first_name);
 	msg->getString("Data", "LastName", last_name);
-	msg->getString("Data", "ObjectName", title);
+	msg->getString("Data", "ObjectName", object_name);
 	msg->getString("Data", "Message", message);
 	msg->getS32("Data", "ChatChannel", chat_channel);
 
@@ -6576,6 +6592,7 @@ void process_script_dialog(LLMessageSystem* msg, void**)
 	payload["sender"] = msg->getSender().getIPandPort();
 	payload["object_id"] = object_id;
 	payload["chat_channel"] = chat_channel;
+	payload["object_name"] = object_name;
 
 	// build up custom form
 	S32 button_count = msg->getNumberOfBlocks("Buttons");
@@ -6594,7 +6611,7 @@ void process_script_dialog(LLMessageSystem* msg, void**)
 	}
 
 	LLSD args;
-	args["TITLE"] = title;
+	args["TITLE"] = object_name;
 	args["MESSAGE"] = message;
 	LLNotificationPtr notification;
 	if (!first_name.empty())
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 70509f9a9f..280337be0f 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -3109,9 +3109,16 @@ void LLViewerLODTexture::processTextureStats()
 	{
 		mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, (S8)mDesiredSavedRawDiscardLevel) ;
 	}
+	else if(LLPipeline::sMemAllocationThrottled)//release memory of large textures by decrease their resolutions.
+	{
+		if(scaleDown())
+		{
+			mDesiredDiscardLevel = mCachedRawDiscardLevel ;
+		}
+	}
 }
 
-void LLViewerLODTexture::scaleDown()
+bool LLViewerLODTexture::scaleDown()
 {
 	if(hasGLTexture() && mCachedRawDiscardLevel > getDiscardLevel())
 	{		
@@ -3122,7 +3129,10 @@ void LLViewerLODTexture::scaleDown()
 		{
 			tester->setStablizingTime() ;
 		}
+
+		return true ;
 	}
+	return false ;
 }
 //----------------------------------------------------------------------------------------------
 //end of LLViewerLODTexture
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index de528927b4..a4a5ae0a5b 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -597,7 +597,7 @@ public:
 
 private:
 	void init(bool firstinit) ;
-	void scaleDown() ;		
+	bool scaleDown() ;		
 
 private:
 	F32 mDiscardVirtualSize;		// Virtual size used to calculate desired discard	
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 8d4f9b346f..5893259d96 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -662,6 +662,17 @@ public:
 			addText(xpos, ypos, llformat("%d %d %d %d", color[0], color[1], color[2], color[3]));
 			ypos += y_inc;
 		}
+
+		if (gSavedSettings.getBOOL("DebugShowPrivateMem"))
+		{
+			LLPrivateMemoryPoolManager::getInstance()->updateStatistics() ;
+			addText(xpos, ypos, llformat("Total Reserved(KB): %d", LLPrivateMemoryPoolManager::getInstance()->mTotalReservedSize / 1024));
+			ypos += y_inc;
+
+			addText(xpos, ypos, llformat("Total Allocated(KB): %d", LLPrivateMemoryPoolManager::getInstance()->mTotalAllocatedSize / 1024));
+			ypos += y_inc;
+		}
+
 		// only display these messages if we are actually rendering beacons at this moment
 		if (LLPipeline::getRenderBeacons(NULL) && LLFloaterReg::instanceVisible("beacons"))
 		{
@@ -1630,6 +1641,7 @@ LLViewerWindow::LLViewerWindow(
 	}
 	LLVertexBuffer::initClass(gSavedSettings.getBOOL("RenderVBOEnable"), gSavedSettings.getBOOL("RenderVBOMappingDisable"));
 	LL_INFOS("RenderInit") << "LLVertexBuffer initialization done." << LL_ENDL ;
+	gGL.init() ;
 
 	if (LLFeatureManager::getInstance()->isSafe()
 		|| (gSavedSettings.getS32("LastFeatureVersion") != LLFeatureManager::getInstance()->getVersion())
@@ -2026,15 +2038,17 @@ void LLViewerWindow::shutdownGL()
 	llinfos << "All textures and llimagegl images are destroyed!" << llendl ;
 
 	llinfos << "Cleaning up select manager" << llendl;
-	LLSelectMgr::getInstance()->cleanup();
-
-	LLVertexBuffer::cleanupClass();
+	LLSelectMgr::getInstance()->cleanup();	
 
 	llinfos << "Stopping GL during shutdown" << llendl;
 	stopGL(FALSE);
 	stop_glerror();
 
 	gGL.shutdown();
+
+	LLVertexBuffer::cleanupClass();
+
+	llinfos << "LLVertexBuffer cleaned." << llendl ;
 }
 
 // shutdownViews() and shutdownGL() need to be called first
@@ -4148,6 +4162,19 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
 	{
 		return FALSE;
 	}
+	//check if there is enough memory for the snapshot image
+	if(LLPipeline::sMemAllocationThrottled)
+	{
+		return FALSE ; //snapshot taking is disabled due to memory restriction.
+	}
+	if(image_width * image_height > (1 << 22)) //if snapshot image is larger than 2K by 2K
+	{
+		if(!LLMemory::tryToAlloc(NULL, image_width * image_height * 3))
+		{
+			llwarns << "No enough memory to take the snapshot with size (w : h): " << image_width << " : " << image_height << llendl ;
+			return FALSE ; //there is no enough memory for taking this snapshot.
+		}
+	}
 
 	// PRE SNAPSHOT
 	gDisplaySwapBuffers = FALSE;
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index bdab250b49..e457cc3e70 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -7524,8 +7524,7 @@ void LLVOAvatar::useBakedTexture( const LLUUID& id )
 // static
 void LLVOAvatar::dumpArchetypeXML( void* )
 {
-	LLAPRFile outfile;
-	outfile.open(gDirUtilp->getExpandedFilename(LL_PATH_CHARACTER,"new archetype.xml"), LL_APR_WB );
+	LLAPRFile outfile(gDirUtilp->getExpandedFilename(LL_PATH_CHARACTER, "new archetype.xml"), LL_APR_WB);
 	apr_file_t* file = outfile.getFileHandle() ;
 	if (!file)
 	{
diff --git a/indra/newview/llvocache.cpp b/indra/newview/llvocache.cpp
index 6d457434b5..baf01ec066 100644
--- a/indra/newview/llvocache.cpp
+++ b/indra/newview/llvocache.cpp
@@ -268,7 +268,6 @@ LLVOCache::LLVOCache():
 	mCacheSize(1)
 {
 	mEnabled = gSavedSettings.getBOOL("ObjectCacheEnabled");
-	mLocalAPRFilePoolp = new LLVolatileAPRPool() ;
 }
 
 LLVOCache::~LLVOCache()
@@ -278,7 +277,6 @@ LLVOCache::~LLVOCache()
 		writeCacheHeader();
 		clearCacheInMemory();
 	}
-	delete mLocalAPRFilePoolp;
 }
 
 void LLVOCache::setDirNames(ELLPath location)
@@ -435,7 +433,7 @@ void LLVOCache::removeFromCache(HeaderEntryInfo* entry)
 
 	std::string filename;
 	getObjectCacheFilename(entry->mHandle, filename);
-	LLAPRFile::remove(filename, mLocalAPRFilePoolp);
+	LLAPRFile::remove(filename);
 	entry->mTime = INVALID_TIME ;
 	updateEntry(entry) ; //update the head file.
 }
@@ -452,9 +450,9 @@ void LLVOCache::readCacheHeader()
 	clearCacheInMemory();	
 
 	bool success = true ;
-	if (LLAPRFile::isExist(mHeaderFileName, mLocalAPRFilePoolp))
+	if (LLAPRFile::isExist(mHeaderFileName))
 	{
-		LLAPRFile apr_file(mHeaderFileName, APR_READ|APR_BINARY, mLocalAPRFilePoolp);		
+		LLAPRFile apr_file(mHeaderFileName, APR_READ|APR_BINARY);		
 		
 		//read the meta element
 		success = check_read(&apr_file, &mMetaInfo, sizeof(HeaderMetaInfo)) ;
@@ -539,7 +537,7 @@ void LLVOCache::writeCacheHeader()
 
 	bool success = true ;
 	{
-		LLAPRFile apr_file(mHeaderFileName, APR_CREATE|APR_WRITE|APR_BINARY, mLocalAPRFilePoolp);
+		LLAPRFile apr_file(mHeaderFileName, APR_CREATE|APR_WRITE|APR_BINARY);
 
 		//write the meta element
 		success = check_write(&apr_file, &mMetaInfo, sizeof(HeaderMetaInfo)) ;
@@ -577,7 +575,7 @@ void LLVOCache::writeCacheHeader()
 
 BOOL LLVOCache::updateEntry(const HeaderEntryInfo* entry)
 {
-	LLAPRFile apr_file(mHeaderFileName, APR_WRITE|APR_BINARY, mLocalAPRFilePoolp);
+	LLAPRFile apr_file(mHeaderFileName, APR_WRITE|APR_BINARY);
 	apr_file.seek(APR_SET, entry->mIndex * sizeof(HeaderEntryInfo) + sizeof(HeaderMetaInfo)) ;
 
 	return check_write(&apr_file, (void*)entry, sizeof(HeaderEntryInfo)) ;
@@ -603,7 +601,7 @@ void LLVOCache::readFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::voca
 	{
 		std::string filename;
 		getObjectCacheFilename(handle, filename);
-		LLAPRFile apr_file(filename, APR_READ|APR_BINARY, mLocalAPRFilePoolp);
+		LLAPRFile apr_file(filename, APR_READ|APR_BINARY);
 	
 		LLUUID cache_id ;
 		success = check_read(&apr_file, cache_id.mData, UUID_BYTES) ;
@@ -726,7 +724,7 @@ void LLVOCache::writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry:
 	{
 		std::string filename;
 		getObjectCacheFilename(handle, filename);
-		LLAPRFile apr_file(filename, APR_CREATE|APR_WRITE|APR_BINARY, mLocalAPRFilePoolp);
+		LLAPRFile apr_file(filename, APR_CREATE|APR_WRITE|APR_BINARY);
 	
 		success = check_write(&apr_file, (void*)id.mData, UUID_BYTES) ;
 
@@ -751,4 +749,3 @@ void LLVOCache::writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry:
 
 	return ;
 }
-
diff --git a/indra/newview/llvocache.h b/indra/newview/llvocache.h
index 14e3b4c793..13651c6779 100644
--- a/indra/newview/llvocache.h
+++ b/indra/newview/llvocache.h
@@ -142,7 +142,6 @@ private:
 	U32                  mNumEntries;
 	std::string          mHeaderFileName ;
 	std::string          mObjectCacheDirName;
-	LLVolatileAPRPool*   mLocalAPRFilePoolp ; 	
 	header_entry_queue_t mHeaderEntryQueue;
 	handle_entry_map_t   mHandleEntryMap;	
 
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index 0db0010688..8b942fbc6a 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -942,7 +942,7 @@ void LLVivoxVoiceClient::stateMachine()
 
 				if(!mSocket)
 				{
-					mSocket = LLSocket::create(gAPRPoolp, LLSocket::STREAM_TCP);	
+					mSocket = LLSocket::create(LLSocket::STREAM_TCP);	
 				}
 				
 				mConnected = mSocket->blockingConnect(mDaemonHost);
diff --git a/indra/newview/llwatchdog.cpp b/indra/newview/llwatchdog.cpp
index 4f582fc2db..64ca94b567 100644
--- a/indra/newview/llwatchdog.cpp
+++ b/indra/newview/llwatchdog.cpp
@@ -178,8 +178,8 @@ void LLWatchdog::init(killer_event_callback func)
 	mKillerCallback = func;
 	if(!mSuspectsAccessMutex && !mTimer)
 	{
-		mSuspectsAccessMutex = new LLMutex(NULL);
-		mTimer = new LLWatchdogTimerThread();
+		mSuspectsAccessMutex = new LLMutex;
+		mTimer = new LLWatchdogTimerThread;
 		mTimer->setSleepTime(WATCHDOG_SLEEP_TIME_USEC / 1000);
 		mLastClockCount = LLTimer::getTotalTime();
 
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index 4a6ec7fdbb..a7ae456f3c 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -127,6 +127,12 @@ void LLWorld::destroyClass()
 		LLVOCache::getInstance()->destroyClass() ;
 	}
 	LLViewerPartSim::getInstance()->destroyClass();
+
+	mDefaultWaterTexturep = NULL ;
+	for (S32 i = 0; i < 8; i++)
+	{
+		mEdgeWaterObjects[i] = NULL;
+	}
 }
 
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 7a26404138..a50f66f282 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -103,6 +103,7 @@
 #include "llmutelist.h"
 #include "lltoolpie.h"
 #include "llcurl.h"
+#include "llnotifications.h"
 
 
 void check_stack_depth(S32 stack_depth)
@@ -317,6 +318,7 @@ BOOL	LLPipeline::sRenderFrameTest = FALSE;
 BOOL	LLPipeline::sRenderAttachedLights = TRUE;
 BOOL	LLPipeline::sRenderAttachedParticles = TRUE;
 BOOL	LLPipeline::sRenderDeferred = FALSE;
+BOOL    LLPipeline::sMemAllocationThrottled = FALSE;
 S32		LLPipeline::sVisibleLightCount = 0;
 F32		LLPipeline::sMinRenderSize = 0.f;
 
@@ -561,6 +563,24 @@ void LLPipeline::destroyGL()
 
 static LLFastTimer::DeclareTimer FTM_RESIZE_SCREEN_TEXTURE("Resize Screen Texture");
 
+//static
+void LLPipeline::throttleNewMemoryAllocation(BOOL disable)
+{
+	if(sMemAllocationThrottled != disable)
+	{
+		sMemAllocationThrottled = disable ;
+
+		if(sMemAllocationThrottled)
+		{
+			//send out notification
+			LLNotification::Params params("LowMemory");
+			LLNotifications::instance().add(params);
+
+			//release some memory.
+		}
+	}
+}
+
 void LLPipeline::resizeScreenTexture()
 {
 	LLFastTimer ft(FTM_RESIZE_SCREEN_TEXTURE);
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index 671e0f66b0..27ee2745b5 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -362,6 +362,8 @@ public:
 	static void updateRenderDeferred();
 	static void refreshRenderDeferred();
 
+	static void throttleNewMemoryAllocation(BOOL disable);
+
 	void addDebugBlip(const LLVector3& position, const LLColor4& color);
 
 private:
@@ -518,8 +520,9 @@ public:
 	static BOOL				sRenderAttachedLights;
 	static BOOL				sRenderAttachedParticles;
 	static BOOL				sRenderDeferred;
+	static BOOL             sMemAllocationThrottled;
 	static S32				sVisibleLightCount;
-	static F32				sMinRenderSize;
+	static F32				sMinRenderSize;	
 
 	//screen texture
 	U32 					mScreenWidth;
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index 4e55252611..16f48f3a4e 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -2133,6 +2133,16 @@
                function="ToggleControl"
                parameter="DebugShowMemory" />
             </menu_item_check>
+	     <menu_item_check
+               label="Show Private Mem Info"
+               name="Show Private Mem Info">
+              <menu_item_check.on_check
+               function="CheckControl"
+               parameter="DebugShowPrivateMem" />
+              <menu_item_check.on_click
+               function="ToggleControl"
+               parameter="DebugShowPrivateMem" />
+            </menu_item_check>
 
             <menu_item_separator/>
 
diff --git a/indra/newview/skins/default/xui/en/notifications.xml b/indra/newview/skins/default/xui/en/notifications.xml
index 104bcaf7d0..99ab56d10a 100644
--- a/indra/newview/skins/default/xui/en/notifications.xml
+++ b/indra/newview/skins/default/xui/en/notifications.xml
@@ -6261,6 +6261,10 @@ Grant this request?
 [MESSAGE]
     <form name="form">
       <button
+       index="-2"
+       name="Mute"
+       text="Block"/>
+      <button
        index="-1"
        name="Ignore"
        text="Ignore"/>
@@ -6276,6 +6280,10 @@ Grant this request?
 [MESSAGE]
     <form name="form">
       <button
+       index="-2"
+       name="Mute"
+       text="Block"/>
+      <button
        index="-1"
        name="Ignore"
        text="Ignore"/>
@@ -7139,6 +7147,20 @@ Click and drag anywhere on the world to rotate your view
     <tag>funds</tag>
   </notification>
 
+   <notification
+   icon="alertmodal.tga"
+   name="LowMemory"
+   type="alertmodal">
+    Your memory pool is low. Some functions of SL are disabled to avoid crash. Please close other applications. Restart SL if this persists.
+  </notification>
+
+  <notification
+     icon="alertmodal.tga"
+     name="ForceQuitDueToLowMemory"
+     type="alertmodal">
+    SL will quit in 30 seconds due to out of memory.
+  </notification>
+
   <notification
   name="PopupAttempt"
   icon="Popup_Caution"
diff --git a/indra/newview/skins/default/xui/en/panel_login.xml b/indra/newview/skins/default/xui/en/panel_login.xml
index 0bc1be666e..83f1bff91f 100644
--- a/indra/newview/skins/default/xui/en/panel_login.xml
+++ b/indra/newview/skins/default/xui/en/panel_login.xml
@@ -117,12 +117,13 @@ label="Remember password"
   name="connect_btn"
   top="35"
   width="90" />
+  <!-- Utf code in label is a filled up-pointing triangle -->
   <menu_button
   left_pad="5"
   top="35"
   width="80"
   height="23"
-  label="Mode ▲"
+  label="Mode &#9650;"
   name="mode_menu"  
   tool_tip="Select your mode. Choose Basic for fast, easy exploration and chat. Choose Advanced to access more features."
   menu_filename="menu_mode_change.xml"
diff --git a/indra/newview/skins/default/xui/en/panel_region_terrain.xml b/indra/newview/skins/default/xui/en/panel_region_terrain.xml
index bbb8b40594..5d060c0a0d 100644
--- a/indra/newview/skins/default/xui/en/panel_region_terrain.xml
+++ b/indra/newview/skins/default/xui/en/panel_region_terrain.xml
@@ -193,7 +193,7 @@
     </text>
     <text
        follows="left|top"
-       height="20"
+       height="60"
        layout="topleft"
        left_delta="0"
        name="height_text_lbl11"
diff --git a/indra/newview/skins/default/xui/en/panel_status_bar.xml b/indra/newview/skins/default/xui/en/panel_status_bar.xml
index 23ad0e9528..f25a73da38 100644
--- a/indra/newview/skins/default/xui/en/panel_status_bar.xml
+++ b/indra/newview/skins/default/xui/en/panel_status_bar.xml
@@ -77,15 +77,16 @@
      top="0"
      width="55" />
   </panel>
+  <!-- UTF 9660 code in label below is a down-pointing filled-in triangle -->
   <menu_button
      follows="right|top"    
     image_color="0 0 0 0"
     hover_glow_amount="0"
     left_pad="5"
-    top="0"
+    top="2"
     width="55"
     height="18"
-    label="Mode ▼"
+    label="Mode &#9660;"
     tool_tip="Select your mode. Choose Basic for fast, easy exploration and chat. Choose Advanced to access more features."
     menu_filename="menu_mode_change.xml"
     />
diff --git a/indra/newview/tests/llworldmap_test.cpp b/indra/newview/tests/llworldmap_test.cpp
index acc6e814bc..102294959a 100644
--- a/indra/newview/tests/llworldmap_test.cpp
+++ b/indra/newview/tests/llworldmap_test.cpp
@@ -27,7 +27,6 @@
 
 // Dependencies
 #include "linden_common.h"
-#include "llapr.h"
 #include "llsingleton.h"
 #include "lltrans.h"
 #include "lluistring.h"