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#pragma once
typedef size_t( *MemAllocFailHandler_t )( size_t );
class IMemAlloc {
public:
// Release versions
virtual void *Alloc( size_t nSize ) = 0;
virtual void *Realloc( void *pMem, size_t nSize ) = 0;
virtual void Free( void *pMem ) = 0;
virtual void *Expand_NoLongerSupported( void *pMem, size_t nSize ) = 0;
// Debug versions
virtual void *Alloc( size_t nSize, const char *pFileName, int nLine ) = 0;
virtual void *Realloc( void *pMem, size_t nSize, const char *pFileName, int nLine ) = 0;
virtual void Free( void *pMem, const char *pFileName, int nLine ) = 0;
virtual void *Expand_NoLongerSupported( void *pMem, size_t nSize, const char *pFileName, int nLine ) = 0;
// Returns size of a particular allocation
virtual size_t GetSize( void *pMem ) = 0;
// Force file + line information for an allocation
virtual void PushAllocDbgInfo( const char *pFileName, int nLine ) = 0;
virtual void PopAllocDbgInfo( ) = 0;
// FIXME: Remove when we have our own allocator
// these methods of the Crt debug code is used in our codebase currently
virtual long CrtSetBreakAlloc( long lNewBreakAlloc ) = 0;
virtual int CrtSetReportMode( int nReportType, int nReportMode ) = 0;
virtual int CrtIsValidHeapPointer( const void *pMem ) = 0;
virtual int CrtIsValidPointer( const void *pMem, unsigned int size, int access ) = 0;
virtual int CrtCheckMemory( void ) = 0;
virtual int CrtSetDbgFlag( int nNewFlag ) = 0;
virtual void CrtMemCheckpoint( void *pState ) = 0;
// FIXME: Make a better stats interface
virtual void DumpStats( ) = 0;
virtual void DumpStatsFileBase( char const *pchFileBase ) = 0;
// FIXME: Remove when we have our own allocator
virtual void* CrtSetReportFile( int nRptType, void* hFile ) = 0;
virtual void* CrtSetReportHook( void* pfnNewHook ) = 0;
virtual int CrtDbgReport( int nRptType, const char * szFile,
int nLine, const char * szModule, const char * pMsg ) = 0;
virtual int heapchk( ) = 0;
virtual bool IsDebugHeap( ) = 0;
virtual void GetActualDbgInfo( const char *&pFileName, int &nLine ) = 0;
virtual void RegisterAllocation( const char *pFileName, int nLine, int nLogicalSize, int nActualSize, unsigned nTime ) = 0;
virtual void RegisterDeallocation( const char *pFileName, int nLine, int nLogicalSize, int nActualSize, unsigned nTime ) = 0;
virtual int GetVersion( ) = 0;
virtual void CompactHeap( ) = 0;
// Function called when malloc fails or memory limits hit to attempt to free up memory (can come in any thread)
virtual MemAllocFailHandler_t SetAllocFailHandler( MemAllocFailHandler_t pfnMemAllocFailHandler ) = 0;
virtual void DumpBlockStats( void * ) = 0;
#if defined( _MEMTEST )
virtual void SetStatsExtraInfo( const char *pMapName, const char *pComment ) = 0;
#endif
// Returns 0 if no failure, otherwise the size_t of the last requested chunk
// "I'm sure this is completely thread safe!" Brian Deen 7/19/2012.
virtual size_t MemoryAllocFailed( ) = 0;
// handles storing allocation info for coroutines
virtual unsigned GetDebugInfoSize( ) = 0;
virtual void SaveDebugInfo( void *pvDebugInfo ) = 0;
virtual void RestoreDebugInfo( const void *pvDebugInfo ) = 0;
virtual void InitDebugInfo( void *pvDebugInfo, const char *pchRootFileName, int nLine ) = 0;
// Replacement for ::GlobalMemoryStatus which accounts for unused memory in our system
virtual void GlobalMemoryStatus( size_t *pUsedMemory, size_t *pFreeMemory ) = 0;
};
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