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a small thread synchronization speedup for dual core mode.

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it's most noticeable in games where the CPU is running behind compared to the GPU.
This commit is contained in:
nitsuja 2012-01-07 20:22:48 -08:00
parent b33be736cd
commit daefb3b550
2 changed files with 13 additions and 5 deletions
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2
Source/Core/Common/Src/StdThread.h
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@ -279,7 +279,7 @@ namespace this_thread
inline void yield() inline void yield()
{ {
#ifdef _WIN32 #ifdef _WIN32
Sleep(0); SwitchToThread();
#else #else
sleep(0); sleep(0);
#endif #endif

16
Source/Core/VideoCommon/Src/Fifo.cpp
View File

@ -171,14 +171,22 @@ void RunGpuLoop()
CommandProcessor::isPossibleWaitingSetDrawDone = false; CommandProcessor::isPossibleWaitingSetDrawDone = false;
} }
fifo.isGpuReadingData = false;
if (EmuRunningState) if (EmuRunningState)
Common::YieldCPU(); {
if (fifo.isGpuReadingData)
{
fifo.isGpuReadingData = false;
Common::YieldCPU();
}
else
{
SLEEP(1);
}
}
else else
{ {
// While the emu is paused, we still handle async request such as Savestates then sleep. // While the emu is paused, we still handle async request such as Savestates then sleep.
fifo.isGpuReadingData = false;
while (!EmuRunningState) while (!EmuRunningState)
{ {
g_video_backend->PeekMessages(); g_video_backend->PeekMessages();