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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// ===========================================================================
// File: TieredCompilation.h
//
// ===========================================================================
#ifndef TIERED_COMPILATION_H
#define TIERED_COMPILATION_H
// TieredCompilationManager determines which methods should be recompiled and
// how they should be recompiled to best optimize the running code. It then
// handles logistics of getting new code created and installed.
class TieredCompilationManager
{
#ifdef FEATURE_TIERED_COMPILATION
public:
#if defined(DACCESS_COMPILE) || defined(CROSSGEN_COMPILE)
TieredCompilationManager() {}
#else
TieredCompilationManager();
#endif
void Init();
#endif // FEATURE_TIERED_COMPILATION
public:
static NativeCodeVersion::OptimizationTier GetInitialOptimizationTier(PTR_MethodDesc pMethodDesc);
#ifdef FEATURE_TIERED_COMPILATION
public:
void OnMethodCalled(MethodDesc* pMethodDesc, bool isFirstCall, int currentCallCountLimit, BOOL* shouldStopCountingCallsRef, BOOL* wasPromotedToNextTierRef);
void OnMethodCallCountingStoppedWithoutTierPromotion(MethodDesc* pMethodDesc);
void AsyncPromoteMethodToTier1(MethodDesc* pMethodDesc);
void Shutdown();
static CORJIT_FLAGS GetJitFlags(NativeCodeVersion nativeCodeVersion);
private:
bool IsTieringDelayActive();
bool TryInitiateTieringDelay();
static void WINAPI TieringDelayTimerCallback(PVOID parameter, BOOLEAN timerFired);
static void TieringDelayTimerCallbackInAppDomain(LPVOID parameter);
void TieringDelayTimerCallbackWorker();
static void ResumeCountingCalls(MethodDesc* pMethodDesc);
bool TryAsyncOptimizeMethods();
static DWORD StaticOptimizeMethodsCallback(void* args);
void OptimizeMethodsCallback();
void OptimizeMethods();
void OptimizeMethod(NativeCodeVersion nativeCodeVersion);
NativeCodeVersion GetNextMethodToOptimize();
BOOL CompileCodeVersion(NativeCodeVersion nativeCodeVersion);
void ActivateCodeVersion(NativeCodeVersion nativeCodeVersion);
bool IncrementWorkerThreadCountIfNeeded();
void DecrementWorkerThreadCount();
#ifdef _DEBUG
DWORD DebugGetWorkerThreadCount();
#endif
Crst m_lock;
SList<SListElem<NativeCodeVersion>> m_methodsToOptimize;
UINT32 m_countOfMethodsToOptimize;
BOOL m_isAppDomainShuttingDown;
DWORD m_countOptimizationThreadsRunning;
SArray<MethodDesc*>* m_methodsPendingCountingForTier1;
HANDLE m_tieringDelayTimerHandle;
bool m_tier1CallCountingCandidateMethodRecentlyRecorded;
CLREvent m_asyncWorkDoneEvent;
#endif // FEATURE_TIERED_COMPILATION
};
#endif // TIERED_COMPILATION_H
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