1 files changed, 451 insertions, 154 deletions

diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index 7e6dfbc9d9..b148b8b76d 100755
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -151,7 +151,7 @@ public:
 	/*virtual*/ bool doWork(S32 param); // Called from LLWorkerThread::processRequest()
 	/*virtual*/ void finishWork(S32 param, bool completed); // called from finishRequest() (WORK THREAD)
 	/*virtual*/ bool deleteOK(); // called from update() (WORK THREAD)
-
+	
 	~LLTextureFetchWorker();
 	// void relese() { --mActiveCount; }
 
@@ -196,6 +196,8 @@ private:
 	bool processSimulatorPackets();
 	bool writeToCacheComplete();
 	
+	void removeFromHTTPQueue();
+
 	void lockWorkMutex() { mWorkMutex.lock(); }
 	void unlockWorkMutex() { mWorkMutex.unlock(); }
 
@@ -275,6 +277,8 @@ private:
 	S32 mRetryAttempt;
 	S32 mActiveCount;
 	U32 mGetStatus;
+	U32 mHTTPHandle;
+	F32 mDelay;
 	std::string mGetReason;
 	
 	// Work Data
@@ -328,6 +332,7 @@ public:
 			mFetcher->mTextureInfo.setRequestCompleteTimeAndLog(mID, timeNow);
 		}
 
+		S32 data_size = 0;
 		lldebugs << "HTTP COMPLETE: " << mID << llendl;
 		LLTextureFetchWorker* worker = mFetcher->getWorker(mID);
 		if (worker)
@@ -349,7 +354,7 @@ public:
 // 				llwarns << "CURL GET FAILED, status:" << status << " reason:" << reason << llendl;
 			}
 			
-			S32 data_size = worker->callbackHttpGet(channels, buffer, partial, success);
+			data_size = worker->callbackHttpGet(channels, buffer, partial, success);
 			
 			if(log_texture_traffic && data_size > 0)
 			{
@@ -359,9 +364,7 @@ public:
 					gTotalTextureBytesPerBoostLevel[tex->getBoostLevel()] += data_size ;
 				}
 			}
-
-			mFetcher->removeFromHTTPQueue(mID, data_size);
-
+		
 			if (worker->mMetricsStartTime)
 			{
 				LLViewerAssetStatsFF::record_response_thread1(LLViewerAssetType::AT_TEXTURE,
@@ -376,9 +379,10 @@ public:
 		}
 		else
 		{
-			mFetcher->removeFromHTTPQueue(mID);
- 			llwarns << "Worker not found: " << mID << llendl;
+			llwarns << "Worker not found: " << mID << llendl;
 		}
+
+		mFetcher->getCurlRequest().completeRequest(data_size);
 	}
 
 	virtual bool followRedir()
@@ -692,10 +696,12 @@ LLTextureFetchWorker::LLTextureFetchWorker(LLTextureFetch* fetcher,
 	  mLastPacket(-1),
 	  mTotalPackets(0),
 	  mImageCodec(IMG_CODEC_INVALID),
-	  mMetricsStartTime(0)
+	  mMetricsStartTime(0),
+	  mHTTPHandle(0),
+	  mDelay(-1.f)
 {
 	mCanUseNET = mUrl.empty() ;
-
+	
 	calcWorkPriority();
 	mType = host.isOk() ? LLImageBase::TYPE_AVATAR_BAKE : LLImageBase::TYPE_NORMAL;
 // 	llinfos << "Create: " << mID << " mHost:" << host << " Discard=" << discard << llendl;
@@ -726,7 +732,19 @@ LLTextureFetchWorker::~LLTextureFetchWorker()
 	mFormattedImage = NULL;
 	clearPackets();
 	unlockWorkMutex();
-	mFetcher->removeFromHTTPQueue(mID);
+	
+	removeFromHTTPQueue();
+}
+
+void LLTextureFetchWorker::removeFromHTTPQueue()
+{
+	if(mHTTPHandle > 0)
+	{
+		llassert_always(mState == WAIT_HTTP_REQ);
+
+		mFetcher->getCurlRequest().removeRequest(mHTTPHandle);
+		mHTTPHandle = 0;
+	}
 }
 
 void LLTextureFetchWorker::clearPackets()
@@ -824,6 +842,7 @@ void LLTextureFetchWorker::setImagePriority(F32 priority)
 		mImagePriority = priority;
 		calcWorkPriority();
 		U32 work_priority = mWorkPriority | (getPriority() & LLWorkerThread::PRIORITY_HIGHBITS);
+		mFetcher->getCurlRequest().updatePriority(mHTTPHandle, mWorkPriority);
 		setPriority(work_priority);
 	}
 }
@@ -851,8 +870,6 @@ void LLTextureFetchWorker::startWork(S32 param)
 // Called from LLWorkerThread::processRequest()
 bool LLTextureFetchWorker::doWork(S32 param)
 {
-	static const F32 FETCHING_TIMEOUT = 120.f;//seconds
-
 	LLMutexLock lock(&mWorkMutex);
 
 	if ((mFetcher->isQuitting() || getFlags(LLWorkerClass::WCF_DELETE_REQUESTED)))
@@ -912,6 +929,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 		mCacheWriteHandle = LLTextureCache::nullHandle();
 		mState = LOAD_FROM_TEXTURE_CACHE;
 		mInCache = FALSE;
+		mDelay = -1.f;
 		mDesiredSize = llmax(mDesiredSize, TEXTURE_CACHE_ENTRY_SIZE); // min desired size is TEXTURE_CACHE_ENTRY_SIZE
 		LL_DEBUGS("Texture") << mID << ": Priority: " << llformat("%8.0f",mImagePriority)
 							 << " Desired Discard: " << mDesiredDiscard << " Desired Size: " << mDesiredSize << LL_ENDL;
@@ -927,7 +945,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			S32 size = mDesiredSize - offset;
 			if (size <= 0)
 			{
-				mState = CACHE_POST;
+				mState = CACHE_POST; //have enough data, will fall to decode
 				return false;
 			}
 			mFileSize = 0;
@@ -944,7 +962,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 																		  offset, size, responder);
 				mCacheReadTimer.reset();
 			}
-			else if (mUrl.empty())
+			else if (mUrl.empty() && mFetcher->canLoadFromCache())
 			{
 				setPriority(LLWorkerThread::PRIORITY_LOW | mWorkPriority); // Set priority first since Responder may change it
 
@@ -953,7 +971,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 																		  offset, size, responder);
 				mCacheReadTimer.reset();
 			}
-			else if(mCanUseHTTP)
+			else if(!mUrl.empty() && mCanUseHTTP)
 			{
 				if (!(mUrl.compare(0, 7, "http://") == 0))
 				{
@@ -981,6 +999,9 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			}
 			else
 			{
+				//
+				//This should never happen
+				//
 				return false;
 			}
 		}
@@ -1020,6 +1041,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				LL_DEBUGS("Texture") << mID << ": Not in Cache" << LL_ENDL;
 				mState = LOAD_FROM_NETWORK;
 			}
+			
 			// fall through
 			LLTextureFetch::sCacheHitRate.addValue(0.f);
 		}
@@ -1060,7 +1082,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 		}
 		if (mCanUseHTTP && !mUrl.empty())
 		{
-			mState = LLTextureFetchWorker::SEND_HTTP_REQ;
+			mState = SEND_HTTP_REQ;
 			setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 			if(mWriteToCacheState != NOT_WRITE)
 			{
@@ -1156,17 +1178,6 @@ bool LLTextureFetchWorker::doWork(S32 param)
 	{
 		if(mCanUseHTTP)
 		{
-			//NOTE:
-			//control the number of the http requests issued for:
-			//1, not openning too many file descriptors at the same time;
-			//2, control the traffic of http so udp gets bandwidth.
-			//
-			static const S32 MAX_NUM_OF_HTTP_REQUESTS_IN_QUEUE = 8 ;
-			if(mFetcher->getNumHTTPRequests() > MAX_NUM_OF_HTTP_REQUESTS_IN_QUEUE)
-			{
-				return false ; //wait.
-			}
-
 			mFetcher->removeFromNetworkQueue(this, false);
 			
 			S32 cur_size = 0;
@@ -1179,6 +1190,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 					{
 						// We already have all the data, just decode it
 						mLoadedDiscard = mFormattedImage->getDiscardLevel();
+						setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 						mState = DECODE_IMAGE;
 						return false;
 					}
@@ -1209,7 +1221,6 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				setPriority(LLWorkerThread::PRIORITY_LOW | mWorkPriority);
 				mState = WAIT_HTTP_REQ;	
 
-				mFetcher->addToHTTPQueue(mID);
 				if (! mMetricsStartTime)
 				{
 					mMetricsStartTime = LLViewerAssetStatsFF::get_timestamp();
@@ -1221,8 +1232,16 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				// Will call callbackHttpGet when curl request completes
 				std::vector<std::string> headers;
 				headers.push_back("Accept: image/x-j2c");
-				res = mFetcher->mCurlGetRequest->getByteRange(mUrl, headers, offset, mRequestedSize,
-															  new HTTPGetResponder(mFetcher, mID, LLTimer::getTotalTime(), mRequestedSize, offset, true));
+				// If we try to fetch the whole file, we set the size to 0 so that we generate the correct curl range request
+				// Note: it looks a bit hacky but we need to limit this (size==0) to mean "whole file" to HTTP only as it messes up UDP fetching
+				if ((offset+mRequestedSize) == MAX_IMAGE_DATA_SIZE)
+				{
+					mRequestedSize = 0;
+				}
+				mHTTPHandle = mFetcher->mCurlGetRequest->getByteRange(mUrl, headers, offset, mRequestedSize, mWorkPriority,
+															  new HTTPGetResponder(mFetcher, mID, LLTimer::getTotalTime(), mRequestedSize, offset, true), mDelay);
+				mDelay = -1.f; //reset
+				res = true;
 			}
 			if (!res)
 			{
@@ -1257,6 +1276,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 					{
 						mState = INIT ;
 						mCanUseHTTP = false ;
+						mUrl.clear();
 						setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 						return false ;
 					}
@@ -1269,12 +1289,15 @@ bool LLTextureFetchWorker::doWork(S32 param)
 					++mHTTPFailCount;
 					max_attempts = mHTTPFailCount+1; // Keep retrying
 					LL_INFOS_ONCE("Texture") << "Texture server busy (503): " << mUrl << LL_ENDL;
+					mDelay = 2.0f; //delay 2 second to re-issue the http request
 				}
 				else
 				{
 					const S32 HTTP_MAX_RETRY_COUNT = 3;
 					max_attempts = HTTP_MAX_RETRY_COUNT + 1;
 					++mHTTPFailCount;
+					mDelay = 2.0f; //delay 2 second to re-issue the http request
+
 					llinfos << "HTTP GET failed for: " << mUrl
 							<< " Status: " << mGetStatus << " Reason: '" << mGetReason << "'"
 							<< " Attempt:" << mHTTPFailCount+1 << "/" << max_attempts << llendl;
@@ -1282,10 +1305,12 @@ bool LLTextureFetchWorker::doWork(S32 param)
 
 				if (mHTTPFailCount >= max_attempts)
 				{
+					mUrl.clear();
 					if (cur_size > 0)
 					{
 						// Use available data
 						mLoadedDiscard = mFormattedImage->getDiscardLevel();
+						setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 						mState = DECODE_IMAGE;
 						return false; 
 					}
@@ -1298,11 +1323,20 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				}
 				else
 				{
+					setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 					mState = SEND_HTTP_REQ;
 					return false; // retry
 				}
 			}
 			
+			// Clear the url since we're done with the fetch
+			// Note: mUrl is used to check is fetching is required so failure to clear it will force an http fetch
+			// next time the texture is requested, even if the data have already been fetched.
+			if(mWriteToCacheState != NOT_WRITE)
+			{
+				mUrl.clear();
+			}
+
 			llassert_always(mBufferSize == cur_size + mRequestedSize);
 			if(!mBufferSize)//no data received.
 			{
@@ -1357,13 +1391,9 @@ bool LLTextureFetchWorker::doWork(S32 param)
 		}
 		else
 		{
-			if(FETCHING_TIMEOUT < mRequestedTimer.getElapsedTimeF32())
-			{
-				//timeout, abort.
-				mState = DONE;
-				return true;
-			}
-
+			//
+			//No need to timeout, the responder should be triggered automatically.
+			//
 			setPriority(LLWorkerThread::PRIORITY_LOW | mWorkPriority);
 			return false;
 		}
@@ -1495,7 +1525,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 		CacheWriteResponder* responder = new CacheWriteResponder(mFetcher, mID);
 		mCacheWriteHandle = mFetcher->mTextureCache->writeToCache(mID, cache_priority,
 																  mFormattedImage->getData(), datasize,
-																  mFileSize, responder);
+																  mFileSize, mRawImage, mDecodedDiscard, responder);
 		// fall through
 	}
 	
@@ -1683,7 +1713,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(const LLChannelDescriptors& channels,
 	S32 data_size = 0 ;
 
 	LLMutexLock lock(&mWorkMutex);
-
+	mHTTPHandle = 0;
 	if (mState != WAIT_HTTP_REQ)
 	{
 		llwarns << "callbackHttpGet for unrequested fetch worker: " << mID
@@ -1707,7 +1737,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(const LLChannelDescriptors& channels,
 			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)
+			if (mRequestedSize == 0)
 			{
 				mHaveAllData = TRUE;
 			}
@@ -1733,6 +1763,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(const LLChannelDescriptors& channels,
 	{
 		mRequestedSize = -1; // error
 	}
+	
 	mLoaded = TRUE;
 	setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 
@@ -1856,11 +1887,11 @@ LLTextureFetch::LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* image
 	  mTextureCache(cache),
 	  mImageDecodeThread(imagedecodethread),
 	  mTextureBandwidth(0),
-	  mHTTPTextureBits(0),
-	  mTotalHTTPRequests(0),
 	  mCurlGetRequest(NULL),
 	  mQAMode(qa_mode),
 	  mFetchDebugger(NULL),
+	  mFetchSource(LLTextureFetch::FROM_ALL),
+	  mOriginFetchSource(LLTextureFetch::FROM_ALL),
 	  mFetcherLocked(FALSE)
 {
 	mCurlPOSTRequestCount = 0;
@@ -1871,6 +1902,13 @@ LLTextureFetch::LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* image
 	if(LLTextureFetchDebugger::isEnabled())
 	{
 		mFetchDebugger = new LLTextureFetchDebugger(this, cache, imagedecodethread) ;
+		mFetchSource = (e_tex_source)gSavedSettings.getS32("TextureFetchSource");
+		if(mFetchSource < 0 && mFetchSource >= INVALID_SOURCE)
+		{
+			mFetchSource = LLTextureFetch::FROM_ALL;
+			gSavedSettings.setS32("TextureFetchSource", 0);
+		}
+		mOriginFetchSource = mFetchSource;
 	}
 }
 
@@ -1940,6 +1978,8 @@ bool LLTextureFetch::createRequest(const std::string& url, const LLUUID& id, con
 	}
 	else
 	{
+		// If the requester knows nothing about the file, we fetch the smallest
+		// amount of data at the lowest resolution (highest discard level) possible.
 		desired_size = TEXTURE_CACHE_ENTRY_SIZE;
 		desired_discard = MAX_DISCARD_LEVEL;
 	}
@@ -2018,45 +2058,22 @@ void LLTextureFetch::removeFromNetworkQueue(LLTextureFetchWorker* worker, bool c
 	}
 }
 
-// protected
-void LLTextureFetch::addToHTTPQueue(const LLUUID& id)
-{
-	LLMutexLock lock(&mNetworkQueueMutex);
-	mHTTPTextureQueue.insert(id);
-	mTotalHTTPRequests++;
-}
-
-void LLTextureFetch::removeFromHTTPQueue(const LLUUID& id, S32 received_size)
-{
-	LLMutexLock lock(&mNetworkQueueMutex);
-	mHTTPTextureQueue.erase(id);
-	mHTTPTextureBits += received_size * 8; // Approximate - does not include header bits	
-}
-
 void LLTextureFetch::deleteRequest(const LLUUID& id, bool cancel)
 {
 	lockQueue() ;
 	LLTextureFetchWorker* worker = getWorkerAfterLock(id);
-	if (worker)
-	{		
-		size_t erased_1 = mRequestMap.erase(worker->mID);
-		unlockQueue() ;
-
-		llassert_always(erased_1 > 0) ;
-
-		removeFromNetworkQueue(worker, cancel);
-		llassert_always(!(worker->getFlags(LLWorkerClass::WCF_DELETE_REQUESTED))) ;
+	unlockQueue() ;
 
-		worker->scheduleDelete();	
-	}
-	else
-	{
-		unlockQueue() ;
-	}
+	removeRequest(worker, cancel);
 }
 
 void LLTextureFetch::removeRequest(LLTextureFetchWorker* worker, bool cancel)
 {
+	if(!worker)
+	{
+		return;
+	}
+
 	lockQueue() ;
 	size_t erased_1 = mRequestMap.erase(worker->mID);
 	unlockQueue() ;
@@ -2065,9 +2082,28 @@ void LLTextureFetch::removeRequest(LLTextureFetchWorker* worker, bool cancel)
 	removeFromNetworkQueue(worker, cancel);
 	llassert_always(!(worker->getFlags(LLWorkerClass::WCF_DELETE_REQUESTED))) ;
 
+	worker->removeFromHTTPQueue();
 	worker->scheduleDelete();	
 }
 
+void LLTextureFetch::deleteAllRequests()
+{
+	while(1)
+	{
+		lockQueue();
+		if(mRequestMap.empty())
+		{
+			unlockQueue() ;
+			break;
+		}
+
+		LLTextureFetchWorker* worker = mRequestMap.begin()->second;
+		unlockQueue() ;
+
+		removeRequest(worker, true);
+	}
+}
+
 S32 LLTextureFetch::getNumRequests() 
 { 
 	lockQueue() ;
@@ -2077,24 +2113,6 @@ S32 LLTextureFetch::getNumRequests()
 	return size ;
 }
 
-S32 LLTextureFetch::getNumHTTPRequests() 
-{ 
-	mNetworkQueueMutex.lock() ;
-	S32 size = (S32)mHTTPTextureQueue.size(); 
-	mNetworkQueueMutex.unlock() ;
-
-	return size ;
-}
-
-U32 LLTextureFetch::getTotalNumHTTPRequests()
-{
-	mNetworkQueueMutex.lock() ;
-	U32 size = mTotalHTTPRequests ;
-	mNetworkQueueMutex.unlock() ;
-
-	return size ;
-}
-
 // call lockQueue() first!
 LLTextureFetchWorker* LLTextureFetch::getWorkerAfterLock(const LLUUID& id)
 {
@@ -2180,7 +2198,7 @@ bool LLTextureFetch::updateRequestPriority(const LLUUID& id, F32 priority)
 	{
 		worker->lockWorkMutex();
 		worker->setImagePriority(priority);
-		worker->unlockWorkMutex();
+		worker->unlockWorkMutex();		
 		res = true;
 	}
 	return res;
@@ -2262,15 +2280,7 @@ S32 LLTextureFetch::update(F32 max_time_ms)
 {
 	static LLCachedControl<F32> band_width(gSavedSettings,"ThrottleBandwidthKBPS");
 
-	{
-		mNetworkQueueMutex.lock() ;
-		mMaxBandwidth = band_width ;
-
-		gTextureList.sTextureBits += mHTTPTextureBits ;
-		mHTTPTextureBits = 0 ;
-
-		mNetworkQueueMutex.unlock() ;
-	}
+	mMaxBandwidth = band_width ;
 
 	S32 res = LLWorkerThread::update(max_time_ms);
 	
@@ -2281,13 +2291,28 @@ S32 LLTextureFetch::update(F32 max_time_ms)
 		// won't work so don't bother trying
 		if (LLStartUp::getStartupState() > STATE_AGENT_SEND)
 		{
-			sendRequestListToSimulators();
+			sendRequestListToSimulators();			
 		}
 	}
 
 	if (!mThreaded)
 	{
 		commonUpdate();
+		
+		if(mCurlGetRequest)
+		{
+			mCurlGetRequest->nextRequests();
+		}
+	}
+
+	if(mCurlGetRequest)
+	{
+		gTextureList.sTextureBits += mCurlGetRequest->getTotalReceivedBits();
+	}
+
+	if(mFetchDebugger)
+	{
+		mFetchDebugger->tryToStopDebug(); //check if need to stop debugger.
 	}
 
 	return res;
@@ -2317,7 +2342,7 @@ void LLTextureFetch::shutDownImageDecodeThread()
 void LLTextureFetch::startThread()
 {
 	// Construct mCurlGetRequest from Worker Thread
-	mCurlGetRequest = new LLCurlRequest();
+	mCurlGetRequest = new LLCurlTextureRequest(8);
 	
 	if(mFetchDebugger)
 	{
@@ -2342,6 +2367,8 @@ void LLTextureFetch::threadedUpdate()
 {
 	llassert_always(mCurlGetRequest);
 	
+	mCurlGetRequest->nextRequests();
+
 	// Limit update frequency
 	const F32 PROCESS_TIME = 0.05f; 
 	static LLFrameTimer process_timer;
@@ -3154,6 +3181,7 @@ public:
 			llinfos << "Fetch Debugger : CURL GET FAILED, index = " << mIndex << ", status:" << status << " reason:" << reason << llendl;
 		}
 		mDebugger->callbackHTTP(mIndex, channels, buffer, partial, success);
+		mDebugger->getCurlGetRequest()->completeRequest(0);
 	}
 	virtual bool followRedir()
 	{
@@ -3176,7 +3204,8 @@ LLTextureFetchDebugger::LLTextureFetchDebugger(LLTextureFetch* fetcher, LLTextur
 LLTextureFetchDebugger::~LLTextureFetchDebugger()
 {
 	mFetchingHistory.clear();
-	stopDebug();
+	mStopDebug = TRUE;
+	tryToStopDebug();
 }
 
 void LLTextureFetchDebugger::init()
@@ -3191,6 +3220,8 @@ void LLTextureFetchDebugger::init()
 	mTotalFetchingTime = 0.f;
 	mRefetchVisCacheTime = -1.f;
 	mRefetchVisHTTPTime = -1.f;
+	mRefetchAllCacheTime = -1.f;
+	mRefetchAllHTTPTime = -1.f;
 
 	mNumFetchedTextures = 0;
 	mNumCacheHits = 0;
@@ -3204,10 +3235,56 @@ void LLTextureFetchDebugger::init()
 	mRenderedDecodedData = 0;
 	mFetchedPixels = 0;
 	mRenderedPixels = 0;
-	mRefetchedData = 0;
-	mRefetchedPixels = 0;
+	mRefetchedVisData = 0;
+	mRefetchedVisPixels = 0;
+	mRefetchedAllData = 0;
+	mRefetchedAllPixels = 0;
 
 	mFreezeHistory = FALSE;
+	mStopDebug = FALSE;
+	mClearHistory = FALSE;
+}
+
+void LLTextureFetchDebugger::startWork(e_debug_state state)
+{
+	switch(state)
+	{
+		case IDLE:
+			break;
+		case START_DEBUG:
+			startDebug();
+			break;
+		case READ_CACHE:			
+			debugCacheRead();
+			break;
+		case WRITE_CACHE:
+			debugCacheWrite();
+			break;
+		case DECODING:
+			debugDecoder();
+			break;
+		case HTTP_FETCHING:
+			debugHTTP();
+			break;
+		case GL_TEX:
+			debugGLTextureCreation();
+			break;
+		case REFETCH_VIS_CACHE:
+			debugRefetchVisibleFromCache();
+			break;
+		case REFETCH_VIS_HTTP:
+			debugRefetchVisibleFromHTTP();
+			break;
+		case REFETCH_ALL_CACHE:
+			debugRefetchAllFromCache();
+			break;
+		case REFETCH_ALL_HTTP:
+			debugRefetchAllFromHTTP();
+			break;
+		default:
+			break;
+	}
+	return;
 }
 
 void LLTextureFetchDebugger::startDebug()
@@ -3215,10 +3292,18 @@ void LLTextureFetchDebugger::startDebug()
 	//lock the fetcher
 	mFetcher->lockFetcher(true);
 	mFreezeHistory = TRUE;
+	mFetcher->resetLoadSource();
 
 	//clear the current fetching queue
 	gTextureList.clearFetchingRequests();
 
+	mState = START_DEBUG;
+}
+
+bool LLTextureFetchDebugger::processStartDebug(F32 max_time)
+{
+	mTimer.reset();
+
 	//wait for all works to be done
 	while(1)
 	{
@@ -3230,6 +3315,11 @@ void LLTextureFetchDebugger::startDebug()
 		{
 			break;
 		}
+
+		if(mTimer.getElapsedTimeF32() > max_time)
+		{
+			return false;
+		}
 	}
 
 	//collect statistics
@@ -3268,10 +3358,17 @@ void LLTextureFetchDebugger::startDebug()
 	}
 
 	mNumFetchedTextures = fetched_textures.size();
+
+	return true;
 }
 
-void LLTextureFetchDebugger::stopDebug()
+void LLTextureFetchDebugger::tryToStopDebug()
 {
+	if(!mStopDebug)
+	{
+		return;
+	}
+
 	//clear the current debug work
 	S32 size = mFetchingHistory.size();
 	switch(mState)
@@ -3300,37 +3397,71 @@ void LLTextureFetchDebugger::stopDebug()
 		break;
 	case GL_TEX:
 		break;
+	case REFETCH_VIS_CACHE:
+		break;
+	case REFETCH_VIS_HTTP:
+		break;
+	case REFETCH_ALL_CACHE:
+		mRefetchList.clear();
+		break;
+	case REFETCH_ALL_HTTP:
+		mRefetchList.clear();
+		break;
 	default:
 		break;
 	}
 
-	while(1)
+	if(update(0.005f))
 	{
-		if(update())
+		//unlock the fetcher
+		mFetcher->lockFetcher(false);
+		mFetcher->resetLoadSource();
+		mFreezeHistory = FALSE;		
+		mStopDebug = FALSE;
+
+		if(mClearHistory)
 		{
-			break;
+			mFetchingHistory.clear();
+			init();	
+			mTotalFetchingTime = gDebugTimers[0].getElapsedTimeF32(); //reset
 		}
 	}
-
-	//unlock the fetcher
-	mFetcher->lockFetcher(false);
-	mFreezeHistory = FALSE;
-	mTotalFetchingTime = gDebugTimers[0].getElapsedTimeF32(); //reset
 }
 
 //called in the main thread and when the fetching queue is empty
 void LLTextureFetchDebugger::clearHistory()
 {
-	mFetchingHistory.clear();
-	init();
+	mClearHistory = TRUE;	
 }
 
 void LLTextureFetchDebugger::addHistoryEntry(LLTextureFetchWorker* worker)
 {
+	if(worker->mRawImage.isNull() || worker->mFormattedImage.isNull())
+	{
+		return;
+	}
+
 	if(mFreezeHistory)
 	{
-		mRefetchedPixels += worker->mRawImage->getWidth() * worker->mRawImage->getHeight();
-		mRefetchedData += worker->mFormattedImage->getDataSize();
+		if(mState == REFETCH_VIS_CACHE || mState == REFETCH_VIS_HTTP)
+		{
+			mRefetchedVisPixels += worker->mRawImage->getWidth() * worker->mRawImage->getHeight();
+			mRefetchedVisData += worker->mFormattedImage->getDataSize();
+		}
+		else
+		{
+			mRefetchedAllPixels += worker->mRawImage->getWidth() * worker->mRawImage->getHeight();
+			mRefetchedAllData += worker->mFormattedImage->getDataSize();
+
+			LLViewerFetchedTexture* tex = LLViewerTextureManager::findFetchedTexture(worker->mID);
+			if(tex && mRefetchList[tex].begin() != mRefetchList[tex].end())
+			{
+				if(worker->mDecodedDiscard == mFetchingHistory[mRefetchList[tex][0]].mDecodedLevel)
+				{
+					mRefetchList[tex].erase(mRefetchList[tex].begin());
+				}
+			}
+		}
 		return;
 	}
 
@@ -3342,9 +3473,8 @@ void LLTextureFetchDebugger::addHistoryEntry(LLTextureFetchWorker* worker)
 	mDecodedData += worker->mRawImage->getDataSize();
 	mFetchedPixels += worker->mRawImage->getWidth() * worker->mRawImage->getHeight();
 
-	mFetchingHistory.push_back(FetchEntry(worker->mID, worker->mDesiredSize, worker->mDecodedDiscard, worker->mFormattedImage->getDataSize(), worker->mRawImage->getDataSize()));
-	//mFetchingHistory.push_back(FetchEntry(worker->mID, worker->mDesiredSize, worker->mHaveAllData ? 0 : worker->mLoadedDiscard, worker->mFormattedImage->getComponents(),
-		//worker->mDecodedDiscard, worker->mFormattedImage->getDataSize(), worker->mRawImage->getDataSize()));
+	mFetchingHistory.push_back(FetchEntry(worker->mID, worker->mDesiredSize, worker->mDecodedDiscard, 
+		worker->mFormattedImage->getDataSize(), worker->mRawImage->getDataSize()));
 }
 
 void LLTextureFetchDebugger::lockCache()
@@ -3361,6 +3491,7 @@ void LLTextureFetchDebugger::debugCacheRead()
 	llassert_always(mState == IDLE);
 	mTimer.reset();
 	mState = READ_CACHE;
+	mCacheReadTime = -1.f;
 
 	S32 size = mFetchingHistory.size();
 	for(S32 i = 0 ; i < size ; i++)
@@ -3396,6 +3527,7 @@ void LLTextureFetchDebugger::debugCacheWrite()
 	llassert_always(mState == IDLE);
 	mTimer.reset();
 	mState = WRITE_CACHE;
+	mCacheWriteTime = -1.f;
 
 	S32 size = mFetchingHistory.size();
 	for(S32 i = 0 ; i < size ; i++)
@@ -3405,7 +3537,7 @@ void LLTextureFetchDebugger::debugCacheWrite()
 			mFetchingHistory[i].mCacheHandle = mTextureCache->writeToCache(mFetchingHistory[i].mID, LLWorkerThread::PRIORITY_NORMAL, 
 				mFetchingHistory[i].mFormattedImage->getData(), mFetchingHistory[i].mFetchedSize,
 				mFetchingHistory[i].mDecodedLevel == 0 ? mFetchingHistory[i].mFetchedSize : mFetchingHistory[i].mFetchedSize + 1, 
-				new LLDebuggerCacheWriteResponder(this, i));					
+				NULL, 0, new LLDebuggerCacheWriteResponder(this, i));					
 		}
 	}
 }
@@ -3424,6 +3556,7 @@ void LLTextureFetchDebugger::debugDecoder()
 	llassert_always(mState == IDLE);
 	mTimer.reset();
 	mState = DECODING;
+	mDecodingTime = -1.f;
 
 	S32 size = mFetchingHistory.size();
 	for(S32 i = 0 ; i < size ; i++)
@@ -3459,6 +3592,7 @@ void LLTextureFetchDebugger::debugHTTP()
 	
 	mTimer.reset();
 	mState = HTTP_FETCHING;
+	mHTTPTime = -1.f;
 	
 	S32 size = mFetchingHistory.size();
 	for (S32 i = 0 ; i < size ; i++)
@@ -3475,14 +3609,28 @@ void LLTextureFetchDebugger::debugHTTP()
 
 S32 LLTextureFetchDebugger::fillCurlQueue()
 {
-	if (mNbCurlRequests == 24)
-		return mNbCurlRequests;
-	
+	if(mStopDebug) //stop
+	{
+		mNbCurlCompleted = mFetchingHistory.size();
+		return 0;
+	}
 	S32 size = mFetchingHistory.size();
+
+	if (mNbCurlRequests == size) //all issued
+	{
+		return 0;
+	}	
+	
+	S32 counter = 8;
+	mNbCurlRequests = 0;
 	for (S32 i = 0 ; i < size ; i++)
 	{		
+		mNbCurlRequests++;
+
 		if (mFetchingHistory[i].mCurlState != FetchEntry::CURL_NOT_DONE)
+		{
 			continue;
+		}
 		std::string texture_url = mHTTPUrl + "/?texture_id=" + mFetchingHistory[i].mID.asString().c_str();
 		S32 requestedSize = mFetchingHistory[i].mRequestedSize;
 		// We request the whole file if the size was not set.
@@ -3491,16 +3639,11 @@ S32 LLTextureFetchDebugger::fillCurlQueue()
 		requestedSize = (requestedSize == 33554432 ? 0 : requestedSize);
 		std::vector<std::string> headers;
 		headers.push_back("Accept: image/x-j2c");
-		bool res = mCurlGetRequest->getByteRange(texture_url, headers, 0, requestedSize, new LLDebuggerHTTPResponder(this, i));
-		if (res)
-		{
-			mFetchingHistory[i].mCurlState = FetchEntry::CURL_IN_PROGRESS;
-			mNbCurlRequests++;
-			// Hack
-			if (mNbCurlRequests == 24)
-				break;
-		}
-		else 
+		mCurlGetRequest->getByteRange(texture_url, headers, 0, requestedSize, 0x10000, new LLDebuggerHTTPResponder(this, i));
+		
+		mFetchingHistory[i].mCurlState = FetchEntry::CURL_IN_PROGRESS;
+		counter--;
+		if(counter < 1)
 		{
 			break;
 		}
@@ -3513,7 +3656,7 @@ void LLTextureFetchDebugger::debugGLTextureCreation()
 {
 	llassert_always(mState == IDLE);
 	mState = GL_TEX;
-	std::vector<LLViewerFetchedTexture*> tex_list;
+	mTempTexList.clear();
 
 	S32 size = mFetchingHistory.size();
 	for(S32 i = 0 ; i < size ; i++)
@@ -3524,28 +3667,54 @@ void LLTextureFetchDebugger::debugGLTextureCreation()
 			if(tex && !tex->isForSculptOnly())
 			{
 				tex->destroyGLTexture() ;
-				tex_list.push_back(tex);
+				mTempTexList.push_back(tex);
 			}
 		}
 	}
+	
+	mGLCreationTime = -1.f;
+	mTempIndex = 0;
+	mHistoryListIndex = 0;
+	
+	return;
+}
 
+bool LLTextureFetchDebugger::processGLCreation(F32 max_time)
+{
 	mTimer.reset();
-	S32 j = 0 ;
-	S32 size1 = tex_list.size();
-	for(S32 i = 0 ; i < size && j < size1; i++)
+
+	bool done = true;
+	S32 size = mFetchingHistory.size();
+	S32 size1 = mTempTexList.size();
+	for(; mHistoryListIndex < size && mTempIndex < size1; mHistoryListIndex++)
 	{
-		if(mFetchingHistory[i].mRawImage.notNull())
+		if(mFetchingHistory[mHistoryListIndex].mRawImage.notNull())
 		{
-			if(mFetchingHistory[i].mID == tex_list[j]->getID())
+			if(mFetchingHistory[mHistoryListIndex].mID == mTempTexList[mTempIndex]->getID())
 			{
-				tex_list[j]->createGLTexture(mFetchingHistory[i].mDecodedLevel, mFetchingHistory[i].mRawImage, 0, TRUE, tex_list[j]->getBoostLevel());
-				j++;
+				mTempTexList[mTempIndex]->createGLTexture(mFetchingHistory[mHistoryListIndex].mDecodedLevel, 
+					mFetchingHistory[mHistoryListIndex].mRawImage, 0, TRUE, mTempTexList[mTempIndex]->getBoostLevel());
+				mTempIndex++;
 			}
 		}
+
+		if(mTimer.getElapsedTimeF32() > max_time)
+		{
+			done = false;
+			break;
+		}
 	}
 
-	mGLCreationTime = mTimer.getElapsedTimeF32() ;
-	return;
+	if(mGLCreationTime < 0.f)
+	{
+		mGLCreationTime = mTimer.getElapsedTimeF32() ;
+	}
+	else
+	{
+		mGLCreationTime += mTimer.getElapsedTimeF32() ;
+	}
+
+	return done;
 }
 
 //clear fetching results of all textures.
@@ -3562,15 +3731,62 @@ void LLTextureFetchDebugger::clearTextures()
 	}
 }
 
+void LLTextureFetchDebugger::makeRefetchList()
+{
+	mRefetchList.clear();
+	S32 size = mFetchingHistory.size();
+	for(S32 i = 0 ; i < size; i++)
+	{		
+		LLViewerFetchedTexture* tex = LLViewerTextureManager::getFetchedTexture(mFetchingHistory[i].mID);
+		if(tex && tex->isJustBound()) //visible
+		{
+			continue; //the texture fetch pipeline will take care of visible textures.
+		}
+
+		mRefetchList[tex].push_back(i); 		
+	}
+}
+
+void LLTextureFetchDebugger::scanRefetchList()
+{
+	if(mStopDebug)
+	{
+		return;
+	}
+	if(!mRefetchNonVis)
+	{
+		return;
+	}
+
+	for(std::map< LLPointer<LLViewerFetchedTexture>, std::vector<S32> >::iterator iter = mRefetchList.begin();
+		iter != mRefetchList.end(); )
+	{
+		if(iter->second.empty())
+		{
+			gTextureList.setDebugFetching(iter->first, -1);
+			mRefetchList.erase(iter++);		// This is the correct method to "erase and move on" in an std::map
+		}
+		else
+		{
+			gTextureList.setDebugFetching(iter->first, mFetchingHistory[iter->second[0]].mDecodedLevel);
+			++iter;
+		}
+	}
+}
+
 void LLTextureFetchDebugger::debugRefetchVisibleFromCache()
 {
 	llassert_always(mState == IDLE);
 	mState = REFETCH_VIS_CACHE;
 
 	clearTextures();
-
+	mFetcher->setLoadSource(LLTextureFetch::FROM_ALL);
+	
 	mTimer.reset();
 	mFetcher->lockFetcher(false);
+	mRefetchVisCacheTime = -1.f;
+	mRefetchedVisData = 0;
+	mRefetchedVisPixels = 0;
 }
 
 void LLTextureFetchDebugger::debugRefetchVisibleFromHTTP()
@@ -3578,17 +3794,60 @@ void LLTextureFetchDebugger::debugRefetchVisibleFromHTTP()
 	llassert_always(mState == IDLE);
 	mState = REFETCH_VIS_HTTP;
 
-	clearCache();
 	clearTextures();
+	mFetcher->setLoadSource(LLTextureFetch::FROM_HTTP_ONLY);
+
+	mTimer.reset();
+	mFetcher->lockFetcher(false);
+	mRefetchVisHTTPTime = -1.f;
+	mRefetchedVisData = 0;
+	mRefetchedVisPixels = 0;
+}
+
+void LLTextureFetchDebugger::debugRefetchAllFromCache()
+{
+	llassert_always(mState == IDLE);
+	mState = REFETCH_ALL_CACHE;
+
+	clearTextures();
+	makeRefetchList();
+	mFetcher->setLoadSource(LLTextureFetch::FROM_ALL);
+
+	mTimer.reset();
+	mFetcher->lockFetcher(false);
+	mRefetchAllCacheTime = -1.f;
+	mRefetchedAllData = 0;
+	mRefetchedAllPixels = 0;
+	mRefetchNonVis = FALSE;
+}
+
+void LLTextureFetchDebugger::debugRefetchAllFromHTTP()
+{
+	llassert_always(mState == IDLE);
+	mState = REFETCH_ALL_HTTP;
+
+	clearTextures();
+	makeRefetchList();
+	mFetcher->setLoadSource(LLTextureFetch::FROM_HTTP_ONLY);
 
 	mTimer.reset();
 	mFetcher->lockFetcher(false);
+	mRefetchAllHTTPTime = -1.f;
+	mRefetchedAllData = 0;
+	mRefetchedAllPixels = 0;
+	mRefetchNonVis = TRUE;
 }
 
-bool LLTextureFetchDebugger::update()
+bool LLTextureFetchDebugger::update(F32 max_time)
 {
 	switch(mState)
 	{
+	case START_DEBUG:
+		if(processStartDebug(max_time))
+		{
+			mState = IDLE;
+		}
+		break;
 	case READ_CACHE:
 		if(!mTextureCache->update(1))
 		{
@@ -3615,6 +3874,7 @@ bool LLTextureFetchDebugger::update()
 		break;
 	case HTTP_FETCHING:
 		mCurlGetRequest->process();
+		mCurlGetRequest->nextRequests();
 		LLCurl::getCurlThread()->update(1);
 		if (!fillCurlQueue() && mNbCurlCompleted == mFetchingHistory.size())
 		{
@@ -3623,22 +3883,59 @@ bool LLTextureFetchDebugger::update()
 		}
 		break;
 	case GL_TEX:
-		mState = IDLE;
+		if(processGLCreation(max_time))
+		{
+			mState = IDLE;
+			mTempTexList.clear();
+		}
 		break;
 	case REFETCH_VIS_CACHE:
 		if (LLAppViewer::getTextureFetch()->getNumRequests() == 0)
 		{
-			mRefetchVisCacheTime = gDebugTimers[0].getElapsedTimeF32() - mTotalFetchingTime;
+			mRefetchVisCacheTime = mTimer.getElapsedTimeF32() ;
 			mState = IDLE;
 			mFetcher->lockFetcher(true);
+			mFetcher->resetLoadSource();
 		}
 		break;
 	case REFETCH_VIS_HTTP:
 		if (LLAppViewer::getTextureFetch()->getNumRequests() == 0)
 		{
-			mRefetchVisHTTPTime = gDebugTimers[0].getElapsedTimeF32() - mTotalFetchingTime;
+			mRefetchVisHTTPTime = mTimer.getElapsedTimeF32() ;
+			mState = IDLE;
+			mFetcher->lockFetcher(true);
+			mFetcher->resetLoadSource();
+		}
+		break;
+	case REFETCH_ALL_CACHE:
+		scanRefetchList();
+		if (LLAppViewer::getTextureFetch()->getNumRequests() == 0)
+		{
+			if(!mRefetchNonVis)
+			{
+				mRefetchNonVis = TRUE; //start to fetch non-vis
+				scanRefetchList();
+				break;
+			}
+
+			mRefetchAllCacheTime = mTimer.getElapsedTimeF32() ;
+			mState = IDLE; 
+			mFetcher->lockFetcher(true);
+			mFetcher->resetLoadSource();
+			mRefetchList.clear();
+			mRefetchNonVis = FALSE;
+		}
+		break;
+	case REFETCH_ALL_HTTP:
+		scanRefetchList();
+		if (LLAppViewer::getTextureFetch()->getNumRequests() == 0)
+		{
+			mRefetchAllHTTPTime = mTimer.getElapsedTimeF32() ;
 			mState = IDLE;
 			mFetcher->lockFetcher(true);
+			mFetcher->resetLoadSource();
+			mRefetchList.clear();
+			mRefetchNonVis = FALSE;
 		}
 		break;
 	default:
@@ -3679,7 +3976,6 @@ void LLTextureFetchDebugger::callbackHTTP(S32 id, const LLChannelDescriptors& ch
 										  const LLIOPipe::buffer_ptr_t& buffer, 
 										  bool partial, bool success)
 {
-	mNbCurlRequests--;
 	if (success)
 	{
 		mFetchingHistory[id].mCurlState = FetchEntry::CURL_DONE;
@@ -3693,7 +3989,7 @@ void LLTextureFetchDebugger::callbackHTTP(S32 id, const LLChannelDescriptors& ch
 			U8* d_buffer = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), data_size);
 			buffer->readAfter(channels.in(), NULL, d_buffer, data_size);
 			
-			llassert_always(mFetchingHistory[id].mFormattedImage.isNull());
+			mFetchingHistory[id].mFormattedImage = NULL;
 			{
 				// For now, create formatted image based on extension
 				std::string texture_url = mHTTPUrl + "/?texture_id=" + mFetchingHistory[id].mID.asString().c_str();
@@ -3715,6 +4011,7 @@ void LLTextureFetchDebugger::callbackHTTP(S32 id, const LLChannelDescriptors& ch
 		{
 			// Fetch will have to be redone
 			mFetchingHistory[id].mCurlState = FetchEntry::CURL_NOT_DONE;
+			mNbCurlRequests--;	
 		}
 		else //skip
 		{