136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
/**********************************************************************/
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/** Microsoft Windows NT **/
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/** Copyright(c) Microsoft Corp., 1997 **/
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/**********************************************************************/
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/*
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madel.hxx
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This module contains the definitions for a memory allocation class that doesn't
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delete memory until the class goes away.
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FILE HISTORY:
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1/12/98 michth created
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*/
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/*
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To build this:
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The dll which builds this must declare in one of it's source files.
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DECLARE_DEBUG_VARIABLE();
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DECLARE_DEBUG_PRINTS_OBJECT();
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It also must include these lines in source files prior to including madel.hxx
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#define DLL_IMPLEMENTATION
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#define IMPLEMENTATION_EXPORT
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It also must execute this before calling the constructor.
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CREATE_DEBUG_PRINT_OBJECT("MemTest");
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There seems to be a build problem if irtlmisc.h is included twice.
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*/
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#ifndef _MADEL_HXX_
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#define _MADEL_HXX_
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#include <manodel.hxx>
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#define MADEL_USE_PROCESS_HEAP USE_PROCESS_HEAP
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#define MADEL_DEFAULT_RESERVE_NUM 100
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#define MADEL_DEFAULT_MIN_BLOCK_MULTIPLE 5
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#define MADEL_DEFAULT_MAX_BLOCK_MULTIPLE 5
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#define MADEL_MAX_ALLOWED_BLOCK_MULTIPLE 128
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#define MADEL_MAX_ALLOWED_SIZE 0xffffff
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#define GREATER_OF(P1, P2) (((P1) >= (P2)) ? (P1) : (P2))
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#define LESSER_OF(P1, P2) (((P1) <= (P2)) ? (P1) : (P2))
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typedef struct _MADEL_BLOCK_HEADER {
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LIST_ENTRY m_leBlockList;
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PVOID pvFreeList;
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BYTE byteBlockMultiple;
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BYTE byteNumFree;
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BYTE byteAlignBytes;
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} MADEL_BLOCK_HEADER, *PMADEL_BLOCK_HEADER;
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typedef struct _MADEL_ALLOC_HEADER {
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DWORD dwSize : 24;
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DWORD bNumAlloc : 7 ;
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DWORD bMadelAlloc : 1;
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} MADEL_ALLOC_HEADER, *PMADEL_ALLOC_HEADER;
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class IRTL_DLLEXP MEMORY_ALLOC_DELETE;
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class IRTL_DLLEXP MEMORY_ALLOC_DELETE
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{
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public:
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MEMORY_ALLOC_DELETE( DWORD dwAllocSize,
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DWORD dwAlignment = 4,
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DWORD dwReserveNum = MADEL_DEFAULT_RESERVE_NUM,
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DWORD dwMinBlockMultiple = MADEL_DEFAULT_MIN_BLOCK_MULTIPLE,
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DWORD dwMaxBlockMultiple = MADEL_DEFAULT_MAX_BLOCK_MULTIPLE,
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HANDLE hHeap = MADEL_USE_PROCESS_HEAP);
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~MEMORY_ALLOC_DELETE();
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PVOID Alloc();
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BOOL Free (PVOID pvMem);
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private:
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DWORD m_dwAllocSize;
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DWORD m_dwBlockMultiple;
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HANDLE m_hHeap;
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DWORD m_dwNumAlloced;
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DWORD m_dwNumFree;
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DWORD m_dwReserveNum;
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DWORD m_dwNumBlocks;
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DWORD m_dwBlockHeaderSpace;
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DWORD m_dwAllocHeaderSpace;
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DWORD m_dwMaxBlockMultiple;
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DWORD m_dwAlignment;
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DWORD m_dwAlignBytes;
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LIST_ENTRY m_leBlockList;
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LIST_ENTRY m_leFreeList;
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LIST_ENTRY m_leDeleteList;
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CRITICAL_SECTION m_csLock;
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BOOL m_bMaxBlockMultipleEqualsMin;
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BYTE m_byteLeastAllocsOnFreeList;
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VOID GetNewBlockMultiple();
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PVOID GetAllocFromList(PLIST_ENTRY pleListHead);
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BOOL AllocBlock();
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VOID CreateBlockFreeList(PMADEL_BLOCK_HEADER pmbhNewBlock);
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VOID LockThis( VOID ) { EnterCriticalSection(&m_csLock);}
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VOID UnlockThis( VOID ) { LeaveCriticalSection(&m_csLock);}
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inline VOID
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AlignAdjust(DWORD &rdwSize,
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DWORD dwAlignment);
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#ifdef _WIN64
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inline VOID
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AlignAdjust(ULONG_PTR &rSize,
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ULONG_PTR Alignment);
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#endif
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inline VOID
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InitAllocHead(PMADEL_ALLOC_HEADER pvAlloc,
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DWORD dwAllocIndex);
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inline PMADEL_BLOCK_HEADER
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GetBlockFromAlloc(PMADEL_ALLOC_HEADER pmahMem);
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};
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#endif // !_MADEL_
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