From 3ddbb094ab9808a6a175759fe33d4f147ce851ab Mon Sep 17 00:00:00 2001
From: "XTra.KrazzY" <XTra.KrazzY@gmail.com>
Date: Fri, 3 Jul 2009 10:00:09 +0000
Subject: [PATCH] 1. Savestates should now be super-stable (but you have to
 save AND load) 2. AccessEFB will probably not hang (tell me if it does) 3.
 Stopping should be a little bit faster

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3658 8ced0084-cf51-0410-be5f-012b33b47a6e
---
 Source/Core/VideoCommon/Src/Fifo.cpp        | 10 ++++++++++
 Source/Plugins/Plugin_VideoOGL/Src/main.cpp | 10 ++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/Source/Core/VideoCommon/Src/Fifo.cpp b/Source/Core/VideoCommon/Src/Fifo.cpp
index c8d8d79b83..efac84ae99 100644
--- a/Source/Core/VideoCommon/Src/Fifo.cpp
+++ b/Source/Core/VideoCommon/Src/Fifo.cpp
@@ -39,6 +39,7 @@ namespace {
 static volatile bool fifoStateRun = false;
 static u8 *videoBuffer;
 static Common::Event fifo_exit_event;
+static Common::CriticalSection s_criticalFifo;
 // STATE_TO_SAVE
 static int size = 0;
 
@@ -46,11 +47,15 @@ static int size = 0;
 
 void Fifo_DoState(PointerWrap &p) 
 {
+	s_criticalFifo.Enter();
+
     p.DoArray(videoBuffer, FIFO_SIZE);
     p.Do(size);
 	int pos = (int)(g_pVideoData - videoBuffer); // get offset
 	p.Do(pos); // read or write offset (depends on the mode afaik)
 	g_pVideoData = &videoBuffer[pos]; // overwrite g_pVideoData -> expected no change when load ss and change when save ss
+
+	s_criticalFifo.Leave();
 }
 
 void Fifo_Init()
@@ -153,6 +158,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
 			Video_UpdateXFB(NULL, 0, 0, 0, FALSE);
 		}
 
+		s_criticalFifo.Enter();
         // check if we are able to run this buffer
         if ((_fifo.bFF_GPReadEnable) && _fifo.CPReadWriteDistance && !(_fifo.bFF_BPEnable && _fifo.bFF_Breakpoint))
         {
@@ -161,6 +167,9 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
 			int peek_counter = 0;
             while (_fifo.bFF_GPReadEnable && _fifo.CPReadWriteDistance)
 			{
+				if(!fifoStateRun)
+					break;
+
 				peek_counter++;
 				if (peek_counter == 1000) {
 					video_initialize.pPeekMessages();
@@ -218,6 +227,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
 			//video_initialize.pLog("..........................IDLE",FALSE);
 			Common::SyncInterlockedExchange((LONG*)&_fifo.CPReadIdle, 1);
         }
+		s_criticalFifo.Leave();
     }
 	fifo_exit_event.Set();
 	#ifdef SETUP_TIMER_WAITING
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/main.cpp b/Source/Plugins/Plugin_VideoOGL/Src/main.cpp
index e2f2ebd206..1aaf7efdda 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/main.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/main.cpp
@@ -102,7 +102,7 @@ static bool s_PluginInitialized = false;
 static volatile u32 s_AccessEFBResult = 0, s_EFBx, s_EFBy;
 static volatile EFBAccessType s_AccessEFBType;
 static Common::Event s_AccessEFBDone;
-static Common::CriticalSection s_criticalEFB;
+static Common::CriticalSection s_criticalEFB, s_criticalAccess;
 
 
 void GetDllInfo (PLUGIN_INFO* _PluginInfo)
@@ -513,6 +513,7 @@ void Video_OnThreadAccessEFB()
 		break;
 
 	case POKE_COLOR:
+		//WARN_LOG(VIDEOINTERFACE, "This is probably some kind of software rendering");
 		break;
 
 	default:
@@ -528,6 +529,8 @@ u32 Video_AccessEFB(EFBAccessType type, u32 x, u32 y)
 {
 	u32 result;
 
+	s_criticalAccess.Enter();
+
 	s_criticalEFB.Enter();
 
 	s_AccessEFBType = type;
@@ -536,8 +539,8 @@ u32 Video_AccessEFB(EFBAccessType type, u32 x, u32 y)
 
 	if (g_VideoInitialize.bUseDualCore)
 	{
-		g_EFBAccessRequested = true;
 		s_AccessEFBDone.Init();
+		g_EFBAccessRequested = true;	
 	}
 
 	s_criticalEFB.Leave();
@@ -548,12 +551,15 @@ u32 Video_AccessEFB(EFBAccessType type, u32 x, u32 y)
 		Video_OnThreadAccessEFB();
 
 	s_criticalEFB.Enter();
+
 	if (g_VideoInitialize.bUseDualCore)
 		s_AccessEFBDone.Shutdown();
 
 	result = s_AccessEFBResult;
 	s_criticalEFB.Leave();
 
+	s_criticalAccess.Leave();
+
 	return result;
 }