You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
2.1 KiB
80 lines
2.1 KiB
/**********************************************************************/
|
|
/** 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_
|