Leaked source code of windows server 2003
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/**********************************************************************//** Microsoft Windows NT **//** Copyright(c) Microsoft Corp., 1997 **//**********************************************************************/
/*
manodel.hxx
This module contains the definitions for a memory allocation class that doesn't delete memory until the class goes away.
FILE HISTORY: 1/9/98 michth created*/
#ifndef _MANODEL_HXX_
#define _MANODEL_HXX_
#include <irtlmisc.h>
#define USE_PROCESS_HEAP 0
#define DEFAULT_MIN_BLOCK_MULTIPLE 3
#define MAX_BLOCK_MULTIPLE 10
#define BLOCK_HEADER_SIZE sizeof(PVOID)
#define GREATER_OF(P1, P2) (((P1) >= (P2)) ? (P1) : (P2))
#define LESSER_OF(P1, P2) (((P1) <= (P2)) ? (P1) : (P2))
class IRTL_DLLEXP MEMORY_ALLOC_NO_DELETE;
class IRTL_DLLEXP MEMORY_ALLOC_NO_DELETE{public:
MEMORY_ALLOC_NO_DELETE( DWORD dwAllocSize, DWORD dwAlignment = 4, BOOL bSortFree = FALSE, DWORD dwMinBlockMultiple = DEFAULT_MIN_BLOCK_MULTIPLE, HANDLE hHeap = USE_PROCESS_HEAP);
~MEMORY_ALLOC_NO_DELETE();
PVOID Alloc();
BOOL Free (PVOID pvMem);
private:
DWORD m_dwAllocSize; DWORD m_dwBlockMultiple; HANDLE m_hHeap; DWORD m_dwNumAlloced; DWORD m_dwNumFree; DWORD m_dwNumBlocks; DWORD m_dwBlockHeaderSpace; DWORD m_dwMaxBlockMultiple; DWORD m_dwAlignment; DWORD m_dwAlignBytes; BOOL m_bSortFree; PVOID m_pvBlockList; PVOID m_pvFreeList;
CRITICAL_SECTION m_csLock;
VOID GetNewBlockMultiple(); PVOID GetAllocFromFreeList(); BOOL AllocBlock(); VOID AddBlockToFreeList(PVOID pvNewBlock); VOID LockThis( VOID ) { EnterCriticalSection(&m_csLock);} VOID UnlockThis( VOID ) { LeaveCriticalSection(&m_csLock);} VOID AlignAdjust(DWORD &rdwSize, DWORD dwAlignment);#ifdef _WIN64
VOID AlignAdjust(ULONG_PTR &rSize, ULONG_PTR Alignment);#endif
};
#endif // !_MANODEL_
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