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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
// ===========================================================================
#ifndef _FINALIZER_THREAD_H_
#define _FINALIZER_THREAD_H_
class FinalizerThread
{
static BOOL fRunFinalizersOnUnload;
static BOOL fQuitFinalizer;
static AppDomain *UnloadingAppDomain;
static CLREvent *hEventFinalizer;
static CLREvent *hEventFinalizerDone;
static CLREvent *hEventShutDownToFinalizer;
static CLREvent *hEventFinalizerToShutDown;
// Note: This enum makes it easier to read much of the code that deals with the
// array of events that the finalizer thread waits on. However, the ordering
// is important.
// See code:SVR::WaitForFinalizerEvent#MHandleTypeValues for more info
enum MHandleType
{
kLowMemoryNotification = 0,
kFinalizer = 1,
#ifdef FEATURE_PROFAPI_ATTACH_DETACH
kProfilingAPIAttach = 2,
#endif // FEATURE_PROFAPI_ATTACH_DETACH
kHandleCount,
};
static HANDLE MHandles[kHandleCount];
static void WaitForFinalizerEvent (CLREvent *event);
static BOOL FinalizerThreadWatchDogHelper();
#ifdef FEATURE_PROFAPI_ATTACH_DETACH
static void ProcessProfilerAttachIfNecessary(ULONGLONG * pui64TimestampLastCheckedEventMs);
#endif // FEATURE_PROFAPI_ATTACH_DETACH
static Object * DoOneFinalization(Object* fobj, Thread* pThread, int bitToCheck, bool *pbTerminate);
static void FinalizeAllObjects_Wrapper(void *ptr);
static Object * FinalizeAllObjects(Object* fobj, int bitToCheck);
public:
static Thread* GetFinalizerThread()
{
LIMITED_METHOD_CONTRACT;
_ASSERTE(g_pFinalizerThread != 0);
return g_pFinalizerThread;
}
// Start unloading app domain
static void UnloadAppDomain(AppDomain *pDomain, BOOL fRunFinalizers)
{
LIMITED_METHOD_CONTRACT;
UnloadingAppDomain = pDomain;
fRunFinalizersOnUnload = fRunFinalizers;
}
static AppDomain* GetUnloadingAppDomain()
{
LIMITED_METHOD_CONTRACT;
return UnloadingAppDomain;
}
static BOOL IsCurrentThreadFinalizer();
static void EnableFinalization();
static BOOL HaveExtraWorkForFinalizer();
static void FinalizerThreadWait(DWORD timeout = INFINITE);
// We wake up a wait for finaliation for two reasons:
// if fFinalizer=TRUE, we have finished finalization.
// if fFinalizer=FALSE, the timeout for finalization is changed, and AD unload helper thread is notified.
static void SignalFinalizationDone(BOOL fFinalizer);
static VOID FinalizerThreadWorker(void *args);
static void FinalizeObjectsOnShutdown(LPVOID args);
static DWORD __stdcall FinalizerThreadStart(void *args);
static DWORD FinalizerThreadCreate();
static BOOL FinalizerThreadWatchDog();
};
#endif // _FINALIZER_THREAD_H_
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