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395 lines
10 KiB
395 lines
10 KiB
/*==========================================================================
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*
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* Copyright (C) 2002 Microsoft Corporation. All Rights Reserved.
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*
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* File: MemoryTracking.cpp
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* Content: Debug memory tracking for detecting leaks, overruns, etc.
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*
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* History:
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* Date By Reason
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* ==== == ======
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* 1/10/2002 masonb Created
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*
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***************************************************************************/
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#include "dncmni.h"
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#ifndef DPNBUILD_ONLYONETHREAD
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#ifdef DBG
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//
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// Uncomment this line to turn critical section internal structure validation on.
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//
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//#define DNCS_VALIDATE
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#define DN_INVALID_THREAD_ID -1
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CBilink g_blAllCritSecs;
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CBilink g_blGlobalCritSecsHeldGroup;
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CRITICAL_SECTION g_CSLock;
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DWORD g_dwNumCritSecsAllocated = 0;
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DWORD g_dwNumCritSecsEntered = 0;
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#ifdef DNCS_VALIDATE
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void DNCSTrackInternalValidate();
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#else // ! DNCS_VALIDATE
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#define DNCSTrackInternalValidate()
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#endif // DNCS_VALIDATE
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackInitialize"
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BOOL DNCSTrackInitialize()
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{
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g_blAllCritSecs.Initialize();
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g_blGlobalCritSecsHeldGroup.Initialize();
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if ( DNOSInitializeCriticalSection(&g_CSLock) == FALSE )
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{
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DPFX(DPFPREP, 0, "Failed to initialize critical section tracking code!" );
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DNASSERT( FALSE );
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return FALSE;
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}
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return TRUE;
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackDeinitialize"
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void DNCSTrackDeinitialize()
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{
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DeleteCriticalSection(&g_CSLock);
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackDumpLeaks"
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BOOL DNCSTrackDumpLeaks()
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{
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DNCRITICAL_SECTION* pCS;
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TCHAR CallStackBuffer[CALLSTACK_BUFFER_SIZE];
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BOOL fLeaked = FALSE;
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EnterCriticalSection(&g_CSLock);
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while (!g_blAllCritSecs.IsEmpty())
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{
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pCS = CONTAINING_OBJECT(g_blAllCritSecs.GetNext(), DNCRITICAL_SECTION, blAllCritSecs);
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pCS->AllocCallStack.GetCallStackString(CallStackBuffer);
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DPFX(DPFPREP, 0, "Critical Section leaked at address 0x%p\n%s", pCS, CallStackBuffer );
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pCS->blAllCritSecs.RemoveFromList();
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DeleteCriticalSection(&pCS->CriticalSection);
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fLeaked = TRUE;
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}
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LeaveCriticalSection(&g_CSLock);
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return fLeaked;
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackInitializeCriticalSection"
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BOOL DNCSTrackInitializeCriticalSection( DNCRITICAL_SECTION *const pCriticalSection )
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{
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BOOL fReturn;
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DNASSERT( pCriticalSection != NULL );
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memset( pCriticalSection, 0x00, sizeof( *pCriticalSection ) );
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pCriticalSection->OwningThreadID = DN_INVALID_THREAD_ID;
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pCriticalSection->MaxLockCount = -1;
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pCriticalSection->blCritSecsHeld.Initialize();
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pCriticalSection->blAllCritSecs.Initialize();
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pCriticalSection->pblCritSecsHeldGroup = &g_blGlobalCritSecsHeldGroup;
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fReturn = DNOSInitializeCriticalSection(&pCriticalSection->CriticalSection);
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if ( fReturn != FALSE )
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{
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pCriticalSection->AllocCallStack.NoteCurrentCallStack();
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EnterCriticalSection(&g_CSLock);
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pCriticalSection->blAllCritSecs.InsertBefore(&g_blAllCritSecs);
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g_dwNumCritSecsAllocated++;
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DNCSTrackInternalValidate();
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LeaveCriticalSection(&g_CSLock);
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}
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return fReturn;
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackDeleteCriticalSection"
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void DNCSTrackDeleteCriticalSection( DNCRITICAL_SECTION *const pCriticalSection )
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{
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DNASSERT( pCriticalSection != NULL );
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DNASSERT( pCriticalSection->LockCount == 0 );
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EnterCriticalSection(&g_CSLock);
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pCriticalSection->blAllCritSecs.RemoveFromList();
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g_dwNumCritSecsAllocated--;
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// NOTE: If they delete the CS without leaving it, still remove it from the held list.
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// If asserts are on, this will have asserted above at LockCount == 0.
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// Calling this is safe whether it is on the list or not.
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pCriticalSection->blCritSecsHeld.RemoveFromList();
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DNCSTrackInternalValidate();
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LeaveCriticalSection(&g_CSLock);
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DeleteCriticalSection( &pCriticalSection->CriticalSection );
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memset( &pCriticalSection->CriticalSection, 0x00, sizeof( pCriticalSection->CriticalSection ) );
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackSetCriticalRecursionCount"
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void DNCSTrackSetCriticalSectionRecursionCount( DNCRITICAL_SECTION *const pCriticalSection, const UINT_PTR RecursionCount )
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{
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DNASSERT( pCriticalSection != NULL );
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pCriticalSection->MaxLockCount = RecursionCount + 1;
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DNASSERT( pCriticalSection->MaxLockCount != 0 );
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackSetCriticalSectionGroup"
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void DNCSTrackSetCriticalSectionGroup( DNCRITICAL_SECTION *const pCriticalSection, CBilink * const pblGroup )
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{
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DNASSERT( pCriticalSection != NULL );
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DNASSERT( pblGroup != NULL );
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pCriticalSection->pblCritSecsHeldGroup = pblGroup;
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackSetCriticalSectionLockOrder"
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void DNCSTrackSetCriticalSectionLockOrder( DNCRITICAL_SECTION *const pCriticalSection, const DWORD dwLockOrder )
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{
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DNASSERT( pCriticalSection != NULL );
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DNASSERT( dwLockOrder > 0 );
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pCriticalSection->dwLockOrder = dwLockOrder;
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackEnterCriticalSection"
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void DNCSTrackEnterCriticalSection( DNCRITICAL_SECTION *const pCriticalSection )
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{
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UINT_PTR ThisThreadID;
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DNASSERT( pCriticalSection != NULL );
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EnterCriticalSection( &pCriticalSection->CriticalSection );
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ThisThreadID = GetCurrentThreadId();
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if ( pCriticalSection->OwningThreadID != ThisThreadID )
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{
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DNASSERT( pCriticalSection->OwningThreadID == DN_INVALID_THREAD_ID );
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DNASSERT( pCriticalSection->LockCount == 0 );
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pCriticalSection->OwningThreadID = ThisThreadID;
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}
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else
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{
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DNASSERT( pCriticalSection->LockCount != 0 );
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}
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if ( pCriticalSection->LockCount == 0 )
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{
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pCriticalSection->CallStack.NoteCurrentCallStack();
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// Track this critical section that was just entered for the first time.
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EnterCriticalSection(&g_CSLock);
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pCriticalSection->LockCount++;
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//
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// If this critical section has a lock order, assert that we're not
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// violating it.
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//
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if (pCriticalSection->dwLockOrder != 0)
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{
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CBilink * pBilink;
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DNCRITICAL_SECTION * pCS;
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pBilink = pCriticalSection->pblCritSecsHeldGroup->GetNext();
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while (pBilink != pCriticalSection->pblCritSecsHeldGroup)
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{
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pCS = CONTAINING_OBJECT(pBilink, DNCRITICAL_SECTION, blCritSecsHeld);
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if (pCS->dwLockOrder != 0)
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{
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DNASSERT( pCS->dwLockOrder <= pCriticalSection->dwLockOrder );
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}
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pBilink = pBilink->GetNext();
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}
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}
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pCriticalSection->blCritSecsHeld.InsertBefore(pCriticalSection->pblCritSecsHeldGroup);
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DNASSERT(g_dwNumCritSecsEntered < g_dwNumCritSecsAllocated);
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g_dwNumCritSecsEntered++;
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DNCSTrackInternalValidate();
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LeaveCriticalSection(&g_CSLock);
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}
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else
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{
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pCriticalSection->LockCount++;
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}
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if ( pCriticalSection->LockCount > pCriticalSection->MaxLockCount )
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{
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if ( pCriticalSection->MaxLockCount == 1 )
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{
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TCHAR CallStackBuffer[ CALLSTACK_BUFFER_SIZE ];
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//
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// Exceeded recursion depth of 1, display stack of call originally
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// holding the lock.
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//
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pCriticalSection->CallStack.GetCallStackString( CallStackBuffer );
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DPFX(DPFPREP, 0, "Critical section 0x%p has been reentered!\nOriginal Holder's Stack:\n%s", pCriticalSection, CallStackBuffer);
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DNASSERT(FALSE);
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}
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else
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{
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//
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// exceeded recursion depth, check your code!!
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//
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DNASSERT(FALSE);
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}
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}
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackLeaveCriticalSection"
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void DNCSTrackLeaveCriticalSection( DNCRITICAL_SECTION *const pCriticalSection )
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{
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DNASSERT( pCriticalSection != NULL );
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DNASSERT( pCriticalSection->OwningThreadID == GetCurrentThreadId() );
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DNASSERT( pCriticalSection->LockCount <= pCriticalSection->MaxLockCount );
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DNASSERT( pCriticalSection->LockCount != 0 );
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if ( pCriticalSection->LockCount == 1 )
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{
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memset( &pCriticalSection->CallStack, 0x00, sizeof( pCriticalSection->CallStack ) );
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pCriticalSection->OwningThreadID = DN_INVALID_THREAD_ID;
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// Track this critical section being left for the last time.
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EnterCriticalSection(&g_CSLock);
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pCriticalSection->LockCount--;
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pCriticalSection->blCritSecsHeld.RemoveFromList();
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DNASSERT(g_dwNumCritSecsEntered > 0);
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g_dwNumCritSecsEntered--;
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DNCSTrackInternalValidate();
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LeaveCriticalSection(&g_CSLock);
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}
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else
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{
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pCriticalSection->LockCount--;
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}
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LeaveCriticalSection( &pCriticalSection->CriticalSection );
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackCriticalSectionIsTakenByThisThread"
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void DNCSTrackCriticalSectionIsTakenByThisThread( const DNCRITICAL_SECTION *const pCriticalSection, const BOOL fFlag )
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{
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DNASSERT( fFlag == ( pCriticalSection->OwningThreadID == GetCurrentThreadId() ) );
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackNoCriticalSectionsTakenByThisThread"
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void DNCSTrackNoCriticalSectionsTakenByThisThread( CBilink * pblGroup )
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{
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CBilink* pBilink;
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DNCRITICAL_SECTION* pCS;
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if (pblGroup == NULL)
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{
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pblGroup = &g_blGlobalCritSecsHeldGroup;
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}
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EnterCriticalSection(&g_CSLock);
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pBilink = pblGroup->GetNext();
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while (pBilink != pblGroup)
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{
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pCS = CONTAINING_OBJECT(pBilink, DNCRITICAL_SECTION, blCritSecsHeld);
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DNASSERT( pCS->OwningThreadID != GetCurrentThreadId() );
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pBilink = pBilink->GetNext();
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}
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DNCSTrackInternalValidate();
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LeaveCriticalSection(&g_CSLock);
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}
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#ifdef DNCS_VALIDATE
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#undef DPF_MODNAME
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#define DPF_MODNAME "DNCSTrackInternalValidate"
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void DNCSTrackInternalValidate()
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{
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CBilink* pBilink;
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DNCRITICAL_SECTION* pCS;
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DWORD dwNumAllocated = 0;
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DWORD dwNumEntered = 0;
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//
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// The global critical section lock must be held!
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//
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DNASSERT(g_dwNumCritSecsEntered <= g_dwNumCritSecsAllocated);
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pBilink = g_blAllCritSecs.GetNext();
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while (pBilink != &g_blAllCritSecs)
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{
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DNASSERT(pBilink->GetNext() != pBilink);
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DNASSERT(pBilink->GetPrev() != pBilink);
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DNASSERT(pBilink->IsListMember(&g_blAllCritSecs));
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pCS = CONTAINING_OBJECT(pBilink, DNCRITICAL_SECTION, blAllCritSecs);
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dwNumAllocated++;
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if (pCS->blCritSecsHeld.IsEmpty())
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{
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DNASSERT(pCS->LockCount == 0);
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}
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else
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{
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DNASSERT(pCS->LockCount > 0);
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dwNumEntered++;
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}
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pBilink = pBilink->GetNext();
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}
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DNASSERT(dwNumAllocated == g_dwNumCritSecsAllocated);
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DNASSERT(dwNumEntered == g_dwNumCritSecsEntered);
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}
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#endif // DNCS_VALIDATE
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#endif // DBG
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#endif // !DPNBUILD_ONLYONETHREAD
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