more fix for EXT-5711: Some textures loading from cache seems jammed.

and possible fix for EXT-5704: FPS drop, and this could be cause freez and crash.

3 files changed, 50 insertions, 29 deletions

diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 2384e6c5ba..1f6e3e03c0 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -1110,12 +1110,15 @@ bool LLAppViewer::mainLoop()
 					ms_sleep(500);
 				}
 
-
+				static const F64 FRAME_SLOW_THRESHOLD = 0.5; //2 frames per seconds				
 				const F64 min_frame_time = 0.0; //(.0333 - .0010); // max video frame rate = 30 fps
 				const F64 min_idle_time = 0.0; //(.0010); // min idle time = 1 ms
 				const F64 max_idle_time = run_multiple_threads ? min_idle_time : llmin(.005*10.0*gFrameTimeSeconds, 0.005); // 5 ms a second
 				idleTimer.reset();
-				while(1)
+				bool is_slow = (frameTimer.getElapsedTimeF64() > FRAME_SLOW_THRESHOLD) ;
+				S32 total_work_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;
 					S32 io_pending = 0;
@@ -1146,6 +1149,8 @@ bool LLAppViewer::mainLoop()
 						ms_sleep(llmin(io_pending/100,100)); // give the vfs some time to catch up
 					}
 
+					total_work_pending += work_pending ;
+					total_io_pending += io_pending ;
 					F64 frame_time = frameTimer.getElapsedTimeF64();
 					F64 idle_time = idleTimer.getElapsedTimeF64();
 					if (frame_time >= min_frame_time &&
@@ -1155,25 +1160,32 @@ bool LLAppViewer::mainLoop()
 						break;
 					}
 				}
-				if ((LLStartUp::getStartupState() >= STATE_CLEANUP) &&
-					(frameTimer.getElapsedTimeF64() > FRAME_STALL_THRESHOLD))
-				{
-					gFrameStalls++;
-				}
-				frameTimer.reset();
 
 				 // Prevent the worker threads from running while rendering.
 				// if (LLThread::processorCount()==1) //pause() should only be required when on a single processor client...
 				if (run_multiple_threads == FALSE)
 				{
-					LLFastTimer ftm(FTM_PAUSE_THREADS);
-	 					
-					LLAppViewer::getTextureCache()->pause();
-					LLAppViewer::getImageDecodeThread()->pause();
-					// LLAppViewer::getTextureFetch()->pause(); // Don't pause the fetch (IO) thread
+					//LLFastTimer ftm(FTM_PAUSE_THREADS); //not necessary.
+	 				
+					if(!total_work_pending) //pause texture fetching threads if nothing to process.
+					{
+						LLAppViewer::getTextureCache()->pause();
+						LLAppViewer::getImageDecodeThread()->pause();
+						LLAppViewer::getTextureFetch()->pause(); 
+					}
+					if(!total_io_pending) //pause file threads if nothing to process.
+					{
+						LLVFSThread::sLocal->pause(); 
+						LLLFSThread::sLocal->pause(); 
+					}
+				}					
+
+				if ((LLStartUp::getStartupState() >= STATE_CLEANUP) &&
+					(frameTimer.getElapsedTimeF64() > FRAME_STALL_THRESHOLD))
+				{
+					gFrameStalls++;
 				}
-				//LLVFSThread::sLocal->pause(); // Prevent the VFS thread from running while rendering.
-				//LLLFSThread::sLocal->pause(); // Prevent the LFS thread from running while rendering.
+				frameTimer.reset();
 
 				resumeMainloopTimeout();
 	
diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index b1b3ae473c..5d21d066c7 100644
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -292,7 +292,10 @@ public:
 							  const LLChannelDescriptors& channels,
 							  const LLIOPipe::buffer_ptr_t& buffer)
 	{
-		if ((gSavedSettings.getBOOL("LogTextureDownloadsToViewerLog")) || (gSavedSettings.getBOOL("LogTextureDownloadsToSimulator")))
+		static LLCachedControl<bool> log_to_viewer_log(gSavedSettings,"LogTextureDownloadsToViewerLog");
+		static LLCachedControl<bool> log_to_sim(gSavedSettings,"LogTextureDownloadsToSimulator");
+
+		if (log_to_viewer_log || log_to_sim)
 		{
 			mFetcher->mTextureInfo.setRequestStartTime(mID, mStartTime);
 			U64 timeNow = LLTimer::getTotalTime();
@@ -715,10 +718,10 @@ bool LLTextureFetchWorker::doWork(S32 param)
 
 	if (mState == LOAD_FROM_NETWORK)
 	{
-		bool get_url = gSavedSettings.getBOOL("ImagePipelineUseHTTP");
-		if (!mUrl.empty()) get_url = false;
+		static LLCachedControl<bool> use_http(gSavedSettings,"ImagePipelineUseHTTP");
+
 // 		if (mHost != LLHost::invalid) get_url = false;
-		if ( get_url )
+		if ( use_http && mUrl.empty())//get http url.
 		{
 			LLViewerRegion* region = NULL;
 			if (mHost == LLHost::invalid)
@@ -1717,7 +1720,8 @@ S32 LLTextureFetch::update(U32 max_time_ms)
 {
 	S32 res;
 	
-	mMaxBandwidth = gSavedSettings.getF32("ThrottleBandwidthKBPS");
+	static LLCachedControl<F32> band_width(gSavedSettings,"ThrottleBandwidthKBPS");
+	mMaxBandwidth = band_width ;
 	
 	res = LLWorkerThread::update(max_time_ms);
 	
@@ -1923,7 +1927,9 @@ void LLTextureFetch::sendRequestListToSimulators()
 // 				llinfos << "IMAGE REQUEST: " << req->mID << " Discard: " << req->mDesiredDiscard
 // 						<< " Packet: " << packet << " Priority: " << req->mImagePriority << llendl;
 
-				if ((gSavedSettings.getBOOL("LogTextureDownloadsToViewerLog")) || (gSavedSettings.getBOOL("LogTextureDownloadsToSimulator")))
+				static LLCachedControl<bool> log_to_viewer_log(gSavedSettings,"LogTextureDownloadsToViewerLog");
+				static LLCachedControl<bool> log_to_sim(gSavedSettings,"LogTextureDownloadsToSimulator");
+				if (log_to_viewer_log || log_to_sim)
 				{
 					mTextureInfo.setRequestStartTime(req->mID, LLTimer::getTotalTime());
 					mTextureInfo.setRequestOffset(req->mID, 0);
@@ -2144,7 +2150,10 @@ bool LLTextureFetch::receiveImagePacket(const LLHost& host, const LLUUID& id, U1
 
 	if(packet_num >= (worker->mTotalPackets - 1))
 	{
-		if ((gSavedSettings.getBOOL("LogTextureDownloadsToViewerLog")) || (gSavedSettings.getBOOL("LogTextureDownloadsToSimulator")))
+		static LLCachedControl<bool> log_to_viewer_log(gSavedSettings,"LogTextureDownloadsToViewerLog");
+		static LLCachedControl<bool> log_to_sim(gSavedSettings,"LogTextureDownloadsToSimulator");
+
+		if (log_to_viewer_log || log_to_sim)
 		{
 			U64 timeNow = LLTimer::getTotalTime();
 			mTextureInfo.setRequestSize(id, worker->mFileSize);
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 133b6ee8c9..bf746497b7 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -1579,12 +1579,12 @@ F32 LLViewerFetchedTexture::calcDecodePriority()
 		}
 		else if (!isJustBound() && mCachedRawImageReady)
 		{
-			//if(mBoostLevel < BOOST_HIGH)
-			//{
-			//	// We haven't rendered this in a while, de-prioritize it
-			//	desired_discard += 2;
-			//}
-			//else
+			if(mBoostLevel < BOOST_HIGH)
+			{
+				// We haven't rendered this in a while, de-prioritize it
+				desired_discard += 2;
+			}
+			else
 			{
 				// We haven't rendered this in the last half second, and we have a cached raw image, leave the desired discard as-is
 				desired_discard = cur_discard;
@@ -1592,7 +1592,7 @@ F32 LLViewerFetchedTexture::calcDecodePriority()
 		}
 
 		S32 ddiscard = cur_discard - desired_discard;
-		ddiscard = llclamp(ddiscard, 0, MAX_DELTA_DISCARD_LEVEL_FOR_PRIORITY);
+		ddiscard = llclamp(ddiscard, -1, MAX_DELTA_DISCARD_LEVEL_FOR_PRIORITY);
 		priority = (ddiscard + 1) * PRIORITY_DELTA_DISCARD_LEVEL_FACTOR;
 	}