Source code of Windows XP (NT5)
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1.8 KiB

/*++ BUILD Version: 0001
*
* WOW v1.0
*
* Copyright (c) 1991, Microsoft Corporation
*
* WPARAM.H
* WOW32 16-bit handle alias support
*
* History:
--*/
typedef enum ParamMode {
PARAM_NONE,
PARAM_16,
PARAM_32
} ParamMode;
/*
* FindParamMap
*
* lpFindParam is for wparam.c use (set to NULL)
*
* lParam is either 16-bit or 32-bit memory pointer
*
* fMode is either param_16 or param_32
*
*/
DWORD FindParamMap(VOID* lpFindParam, DWORD lParam, UINT fMode);
PVOID AddParamMap(DWORD dwPtr32, DWORD dwPtr16);
BOOL DeleteParamMap(DWORD lParam, UINT fMode, BOOL* pfFreePtr);
DWORD GetParam16(DWORD dwParam32);
BOOL W32CheckThunkParamFlag(void);
VOID FreeParamMap(HAND16 htask16);
BOOL SetParamRefCount(DWORD dwParam, UINT fMode, DWORD dwRefCount);
// Add dwPtr16 mapping for a parameter, which is allocated
// size of the buffer is cbExtra and 32-bit pointer to the buffer
// is returned
PVOID AddParamMapEx(DWORD dwPtr16, DWORD cbExtra);
// Update node when pointer is suspect to have been moved
// returns updated pointer (32-bit)
PVOID ParamMapUpdateNode(DWORD dwPtr, UINT fMode, VOID* lpn);
VOID InitParamMap(VOID);
///////////////////////////////////////////////////////////////
//
// This is rather fast and dirty heap allocator
//
typedef struct tagBlkHeader *PBLKHEADER;
typedef struct tagBlkHeader {
PBLKHEADER pNext;
DWORD dwSize; // block size
} BLKHEADER, *PBLKHEADER;
typedef struct tagBlkCache {
LPBYTE pCache;
#ifdef DEBUG
PBLKHEADER pCacheHead;
#endif
PBLKHEADER pCacheFree;
DWORD dwCacheSize;
DWORD dwFlags;
} BLKCACHE, *PBLKCACHE;
LPVOID CacheBlockAllocate (PBLKCACHE pc, DWORD dwSize);
VOID CacheBlockFree (PBLKCACHE pc, LPVOID lpv);
VOID CacheBlockInit (PBLKCACHE pc, DWORD dwCacheSize);
/////////////////////////////////////////////////////////////////