ZeroMemory引出的简便用法

ZeroMemory(buf,BUF_SIZE);

 

in winbase.h:

#define ZeroMemory RtlZeroMemory

 

 

in winnt.h:

#define RtlZeroMemory(Destination,Length) memset((Destination),0,(Length))

 

 

similar:

#define MoveMemory RtlMoveMemory
#define CopyMemory RtlCopyMemory
#define FillMemory RtlFillMemory
#define ZeroMemory RtlZeroMemory
#define SecureZeroMemory RtlSecureZeroMemory

 

#define RtlEqualMemory(Destination,Source,Length) (!memcmp((Destination),(Source),(Length)))
#define RtlMoveMemory(Destination,Source,Length) memmove((Destination),(Source),(Length))
#define RtlCopyMemory(Destination,Source,Length) memcpy((Destination),(Source),(Length))
#define RtlFillMemory(Destination,Length,Fill) memset((Destination),(Fill),(Length))
#define RtlZeroMemory(Destination,Length) memset((Destination),0,(Length))

 

#if !defined(MIDL_PASS)

FORCEINLINE
PVOID
RtlSecureZeroMemory(
    IN PVOID ptr,
    IN SIZE_T cnt
    )
{
    volatile char *vptr = (volatile char *)ptr;

#if defined(_M_AMD64)

        __stosb((PBYTE )((DWORD64)vptr), 0, cnt);

#else

    while (cnt) {
        *vptr = 0;
        vptr++;
        cnt--;
    }

#endif

    return ptr;
}

#endif