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scheudler: Cache ThreadData::IsCPUBound() result

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This commit is contained in:
Pawel Dziepak
2014-01-16 23:26:10 +01:00
parent b7d404c2df
commit f978518a52
2 changed files with 7 additions and 10 deletions
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src/system/kernel/scheduler/scheduler_thread.cpp
+1
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@@ -18,6 +18,7 @@ ThreadData::_InitBase()
fPriorityPenalty = 0; fPriorityPenalty = 0;
fAdditionalPenalty = 0; fAdditionalPenalty = 0;
fEffectivePriority = GetPriority(); fEffectivePriority = GetPriority();
fCPUBound = false;
fTimeUsed = 0; fTimeUsed = 0;
fStolenTime = 0; fStolenTime = 0;
src/system/kernel/scheduler/scheduler_thread.h
+6 -10
View File
@@ -50,7 +50,7 @@ public:
inline int32 GetEffectivePriority() const; inline int32 GetEffectivePriority() const;
inline bool IsCPUBound() const; inline bool IsCPUBound() const { return fCPUBound; }
inline void CancelPenalty(); inline void CancelPenalty();
inline bool ShouldCancelPenalty() const; inline bool ShouldCancelPenalty() const;
@@ -116,6 +116,7 @@ private:
Thread* fThread; Thread* fThread;
bool fCPUBound;
int32 fPriorityPenalty; int32 fPriorityPenalty;
int32 fAdditionalPenalty; int32 fAdditionalPenalty;
@@ -207,21 +208,15 @@ ThreadData::_IncreasePenalty()
int32 oldPenalty = fPriorityPenalty++; int32 oldPenalty = fPriorityPenalty++;
const int kMinimalPriority = _GetMinimalPriority(); const int kMinimalPriority = _GetMinimalPriority();
if (GetPriority() - oldPenalty <= kMinimalPriority) if (GetPriority() - oldPenalty <= kMinimalPriority) {
fPriorityPenalty = oldPenalty; fPriorityPenalty = oldPenalty;
fCPUBound = true;
}
_ComputeEffectivePriority(); _ComputeEffectivePriority();
} }
inline bool
ThreadData::IsCPUBound() const
{
SCHEDULER_ENTER_FUNCTION();
return GetPriority() - fPriorityPenalty == _GetMinimalPriority();
}
inline void inline void
ThreadData::CancelPenalty() ThreadData::CancelPenalty()
{ {
@@ -229,6 +224,7 @@ ThreadData::CancelPenalty()
int32 oldPenalty = fPriorityPenalty; int32 oldPenalty = fPriorityPenalty;
fPriorityPenalty = 0; fPriorityPenalty = 0;
fCPUBound = false;
if (oldPenalty != 0) { if (oldPenalty != 0) {
TRACE("cancelling thread %ld penalty\n", fThread->id); TRACE("cancelling thread %ld penalty\n", fThread->id);