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Only switch to a started thread if better priority.

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Unknown W. Brackets 2013-02-09 19:02:38 -08:00
parent 0ff0b3f57d
commit a5ba6821b7
1 changed files with 10 additions and 6 deletions
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16
Core/HLE/sceKernelThread.cpp
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@ -658,7 +658,7 @@ void __KernelFireThreadEnd(SceUID threadID)
}
// TODO: Use __KernelChangeThreadState instead? It has other affects...
void __KernelChangeReadyState(Thread *thread, SceUID threadID, bool ready, bool atStart = false)
void __KernelChangeReadyState(Thread *thread, SceUID threadID, bool ready)
{
int prio = thread->nt.currentPriority;
@ -669,7 +669,7 @@ void __KernelChangeReadyState(Thread *thread, SceUID threadID, bool ready, bool
}
else if (ready)
{
if (atStart || thread->isRunning())
if (thread->isRunning())
threadReadyQueue[prio].push_front(threadID);
else
threadReadyQueue[prio].push_back(threadID);
@ -1436,9 +1436,6 @@ int sceKernelStartThread(SceUID threadToStartID, u32 argSize, u32 argBlockPtr)
threadToStartID,argSize,argBlockPtr);
__KernelResetThread(startThread);
if (currentThread)
__KernelChangeReadyState(currentThread, true);
__KernelChangeReadyState(startThread, threadToStartID, true, true);
u32 sp = startThread->context.r[MIPS_REG_SP];
if (argBlockPtr && argSize > 0)
@ -1461,7 +1458,14 @@ int sceKernelStartThread(SceUID threadToStartID, u32 argSize, u32 argBlockPtr)
WARN_LOG(HLE,"sceKernelStartThread : had NULL arg");
}
hleReSchedule("thread started");
Thread *cur = __GetCurrentThread();
// Smaller is better for priority. Only switch if the new thread is better.
if (cur && cur->nt.currentPriority > startThread->nt.currentPriority)
{
__KernelChangeReadyState(currentThread, true);
hleReSchedule("thread started");
}
__KernelChangeReadyState(startThread, threadToStartID, true);
return 0;
}
else