84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
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/*****************************************************************************\
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* MODULE: mem.h
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*
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* Header file for memory handling routines (mem.cxx).
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*
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*
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* Copyright (C) 1996-1998 Microsoft Corporation.
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* Copyright (C) 1996-1998 Hewlett Packard Company.
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*
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* History:
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* 07-Oct-1996 HWP-Guys Initiated port from win95 to winNT
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*
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\*****************************************************************************/
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/*-----------------------------------*\
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| Constants
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\*-----------------------------------*/
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#define DEADBEEF 0xdeadbeef // Tail Marker.
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#define MAPMEM ((HANDLE)-1) // File-Map-Memory.
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#define MEM_HEADSIZE (4 * sizeof(DWORD)) //
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#define MEM_TAILSIZE (1 * sizeof(DWORD)) //
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#define MEM_SIZE (MEM_HEADSIZE + MEM_TAILSIZE) //
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/*-----------------------------------*\
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| MEMHEAD Structure
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\*-----------------------------------*/
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typedef struct _MEMHEAD {
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struct _MEMHEAD *pmPrev; // Reference to previous mem-block (dbg-only).
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struct _MEMHEAD *pmNext; // Reference to next mem-block (dbg-only).
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DWORD dwTag; // Memory Tag.
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DWORD cbSize; // size of block allocated (non-aligned size).
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PVOID pvMem[1]; // Start of user-addressable memory.
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} MEMHEAD;
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typedef MEMHEAD *PMEMHEAD;
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typedef MEMHEAD NEAR *NPMEMHEAD;
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typedef MEMHEAD FAR *LPMEMHEAD;
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/*-----------------------------------*\
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| MEMTAIL Structure
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\*-----------------------------------*/
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typedef struct _MEMTAIL {
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DWORD dwSignature;
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} MEMTAIL;
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typedef MEMTAIL *PMEMTAIL;
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typedef MEMTAIL NEAR *NPMEMTAIL;
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typedef MEMTAIL FAR *LPMEMTAIL;
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/*-----------------------------------*\
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| memAlignSize
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\*-----------------------------------*/
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_inline BOOL memAlignSize(
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DWORD cbSize)
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{
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return ((cbSize & 3) ? (cbSize + (sizeof(DWORD) - (cbSize & 3))) : cbSize);
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}
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PVOID memAlloc(
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UINT cbSize);
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BOOL memFree(
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PVOID pMem,
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UINT cbSize);
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UINT memGetSize(
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PVOID pMem);
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VOID memCopy(
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PSTR *ppDst,
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PSTR pSrc,
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UINT cbSize,
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PSTR *ppBuf);
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PTSTR memAllocStr(
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LPCTSTR lpszStr);
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BOOL memFreeStr(
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PTSTR lpszStr);
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