81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
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/**********************************************************************/
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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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manodel.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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1/9/98 michth created
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*/
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#ifndef _MANODEL_HXX_
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#define _MANODEL_HXX_
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#include <irtlmisc.h>
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#define USE_PROCESS_HEAP 0
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#define DEFAULT_MIN_BLOCK_MULTIPLE 3
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#define MAX_BLOCK_MULTIPLE 10
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#define BLOCK_HEADER_SIZE sizeof(PVOID)
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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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class IRTL_DLLEXP MEMORY_ALLOC_NO_DELETE;
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class IRTL_DLLEXP MEMORY_ALLOC_NO_DELETE
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{
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public:
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MEMORY_ALLOC_NO_DELETE( DWORD dwAllocSize,
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DWORD dwAlignment = 4,
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BOOL bSortFree = FALSE,
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DWORD dwMinBlockMultiple = DEFAULT_MIN_BLOCK_MULTIPLE,
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HANDLE hHeap = USE_PROCESS_HEAP);
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~MEMORY_ALLOC_NO_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_dwNumBlocks;
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DWORD m_dwBlockHeaderSpace;
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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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BOOL m_bSortFree;
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PVOID m_pvBlockList;
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PVOID m_pvFreeList;
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CRITICAL_SECTION m_csLock;
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VOID GetNewBlockMultiple();
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PVOID GetAllocFromFreeList();
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BOOL AllocBlock();
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VOID AddBlockToFreeList(PVOID pvNewBlock);
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VOID LockThis( VOID ) { EnterCriticalSection(&m_csLock);}
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VOID UnlockThis( VOID ) { LeaveCriticalSection(&m_csLock);}
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VOID AlignAdjust(DWORD &rdwSize, DWORD dwAlignment);
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#ifdef _WIN64
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VOID AlignAdjust(ULONG_PTR &rSize, ULONG_PTR Alignment);
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#endif
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};
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#endif // !_MANODEL_
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