MAINT-4360 FIXED (Setting LogTextureDownloadsToSimulator causes a viewer crash)

The fix in fllowing:
LLTextureFetch has object LLTextureInfo which is has Recorder object.

The recorder object activate (Recorder::handleStart()) self AccumulatorBufferGroup
(Recorder::mBuffers into the current (LLTrace::get_thread_recorder()) ThreadRecorder object
which created (as I understand) one per thread, and time to time send accumulated data to the master ThreadRecorder.

The problem is that LLTextureFetch also can uses from the main thread.
I decide add parameter to CTOR LLTextureInfo(bool postponeStartRecoreder) -
if it false the recorder start immediatly in LLTextureInfo CTOR body, if true we need to start it manually.

Also I add another one LLTextureInfo  in LLTextureFetch::mTextureInfoMainThread which is intended
for accumulate data from the main thread.
The postponed Recorder started/stoped from LLTextureFetch::startThread()/endThread().

indra/newview/lltexturefetch.cpp

@@ -2522,7 +2522,8 @@ LLTextureFetch::LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* image
 	  mFetchDebugger(NULL),
 	  mFetchSource(LLTextureFetch::FROM_ALL),
 	  mOriginFetchSource(LLTextureFetch::FROM_ALL),
-	  mFetcherLocked(FALSE)
+	  mFetcherLocked(FALSE),
+	  mTextureInfoMainThread(false)
 {
 	mMaxBandwidth = gSavedSettings.getF32("ThrottleBandwidthKBPS");
 	mTextureInfo.setUpLogging(gSavedSettings.getBOOL("LogTextureDownloadsToViewerLog"), gSavedSettings.getBOOL("LogTextureDownloadsToSimulator"), U32Bytes(gSavedSettings.getU32("TextureLoggingThreshold")));
@@ -3128,6 +3129,7 @@ void LLTextureFetch::shutDownImageDecodeThread()
 // Threads:  Ttf
 void LLTextureFetch::startThread()
 {
+	mTextureInfo.startRecording();
 }
 
 // Threads:  Ttf
@@ -3138,6 +3140,8 @@ void LLTextureFetch::endThread()
 					  << ", ResWaits:  " << mTotalResourceWaitCount
 					  << ", TotalHTTPReq:  " << getTotalNumHTTPRequests()
 					  << LL_ENDL;
+
+	mTextureInfo.stopRecording();
 }
 
 // Threads:  Ttf
@@ -3541,8 +3545,8 @@ bool LLTextureFetch::receiveImagePacket(const LLHost& host, const LLUUID& id, U1
 		if (log_to_viewer_log || log_to_sim)
 		{
 			U64Microseconds timeNow = LLTimer::getTotalTime();
-			mTextureInfo.setRequestSize(id, worker->mFileSize);
-			mTextureInfo.setRequestCompleteTimeAndLog(id, timeNow);
+			mTextureInfoMainThread.setRequestSize(id, worker->mFileSize);
+			mTextureInfoMainThread.setRequestCompleteTimeAndLog(id, timeNow);
 		}
 	}
 	worker->unlockWorkMutex();											// -Mw

indra/newview/lltexturefetch.h

@@ -332,6 +332,7 @@ private:
 	F32 mTextureBandwidth;												// <none>
 	F32 mMaxBandwidth;													// Mfnq
 	LLTextureInfo mTextureInfo;
+	LLTextureInfo mTextureInfoMainThread;
 
 	// XXX possible delete
 	U32Bits mHTTPTextureBits;												// Mfnq

indra/newview/lltextureinfo.cpp

@@ -36,14 +36,16 @@ static LLTrace::CountStatHandle<S32> sTextureDownloadsCompleted("texture_downloa
 static LLTrace::CountStatHandle<S32Bytes > sTextureDataDownloaded("texture_data_downloaded", "amount of texture data downloaded");
 static LLTrace::CountStatHandle<U32Milliseconds > sTexureDownloadTime("texture_download_time", "amount of time spent fetching textures");
 
-LLTextureInfo::LLTextureInfo() : 
+LLTextureInfo::LLTextureInfo(bool postponeStartRecoreder) :
 	mLogTextureDownloadsToViewerLog(false),
 	mLogTextureDownloadsToSimulator(false),
 	mTextureDownloadProtocol("NONE"),
 	mTextureLogThreshold(LLUnits::Kilobytes::fromValue(100))
 {
-	mTextures.clear();
-	mRecording.start();
+	if (!postponeStartRecoreder)
+	{
+		startRecording();
+	}
 }
 
 void LLTextureInfo::setUpLogging(bool writeToViewerLog, bool sendToSim, U32Bytes textureLogThreshold)
@@ -78,15 +80,7 @@ U32 LLTextureInfo::getTextureInfoMapSize()
 
 bool LLTextureInfo::has(const LLUUID& id)
 {
-	std::map<LLUUID, LLTextureInfoDetails *>::iterator iterator = mTextures.find(id);
-	if (iterator == mTextures.end())
-	{
-		return false;
-	}
-	else
-	{
-		return true;
-	}
+	return mTextures.end() != mTextures.find(id);
 }
 
 void LLTextureInfo::setRequestStartTime(const LLUUID& id, U64 startTime)
@@ -192,15 +186,12 @@ void LLTextureInfo::setRequestCompleteTimeAndLog(const LLUUID& id, U64Microsecon
 LLSD LLTextureInfo::getAverages()
 {
 	LLSD averagedTextureData;
-	S32 averageDownloadRate;
-	U32Milliseconds download_time = mRecording.getSum(sTexureDownloadTime);
-	if(download_time == (U32Milliseconds)0)
+	S32 averageDownloadRate = 0;
+	unsigned int download_time = mRecording.getSum(sTexureDownloadTime).valueInUnits<LLUnits::Seconds>();
+	
+	if (0 != download_time)
 	{
-		averageDownloadRate = 0;
-	}
-	else
-	{
-		averageDownloadRate = mRecording.getSum(sTextureDataDownloaded).valueInUnits<LLUnits::Bits>() / download_time.valueInUnits<LLUnits::Seconds>();
+		averageDownloadRate = mRecording.getSum(sTextureDataDownloaded).valueInUnits<LLUnits::Bits>() / download_time;
 	}
 
 	averagedTextureData["bits_per_second"]             = averageDownloadRate;
@@ -212,6 +203,16 @@ LLSD LLTextureInfo::getAverages()
 	return averagedTextureData;
 }
 
+void LLTextureInfo::startRecording()
+{
+	mRecording.start();
+}
+
+void LLTextureInfo::stopRecording()
+{
+	mRecording.stop();
+}
+
 void LLTextureInfo::resetTextureStatistics()
 {
 	mRecording.restart();

indra/newview/lltextureinfo.h

@@ -35,7 +35,7 @@
 class LLTextureInfo
 {
 public:
-	LLTextureInfo();
+	LLTextureInfo(bool postponeStartRecoreder = true);
 	~LLTextureInfo();
 
 	void setUpLogging(bool writeToViewerLog, bool sendToSim, U32Bytes textureLogThreshold);
@@ -53,6 +53,8 @@ public:
 	void resetTextureStatistics();
 	U32 getTextureInfoMapSize();
 	LLSD getAverages();
+	void startRecording();
+	void stopRecording();
 
 private:
 	void addRequest(const LLUUID& id);