90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/* mmap_helper.h
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _MMAP_HELPER_H
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#define _MMAP_HELPER_H
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#define _MMIOWRAP(__ptr, __len, __func) \
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({ \
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BOOL __res; \
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for (int __i = 0; __i < 2; __i++) \
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{ \
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__res = __func; \
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if (__res || __i > 0) \
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break; \
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DWORD __errcode = GetLastError (); \
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if (__errcode != ERROR_NOACCESS) \
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break; \
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switch (mmap_is_attached_or_noreserve (__ptr, __len)) \
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{ \
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case MMAP_NORESERVE_COMMITED: \
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continue; \
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case MMAP_RAISE_SIGBUS: \
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raise(SIGBUS); \
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default: \
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break; \
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} \
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break; \
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} \
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__res; \
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})
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#define _MMSOCKWRAP(__ptr, __count, __func) \
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({ \
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int __res; \
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for (int __i = 0; __i < 2; __i++) \
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{ \
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__res = __func; \
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if (!__res || __i > 0) \
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break; \
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DWORD __errcode = WSAGetLastError (); \
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if (__errcode != WSAEFAULT) \
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break; \
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for (unsigned __j = 0; __j < __count; __j++) \
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switch (mmap_is_attached_or_noreserve (__ptr[__j].buf, __ptr[__j].len)) \
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{ \
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case MMAP_NORESERVE_COMMITED: \
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goto keeptrying; \
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case MMAP_RAISE_SIGBUS: \
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raise(SIGBUS); \
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default: \
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break; \
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} \
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break; \
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keeptrying: \
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continue; \
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} \
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__res; \
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})
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extern inline BOOL
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mmReadFile (HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead,
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LPDWORD lpNumberOfBytesRead, LPOVERLAPPED lpOverlapped)
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{
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return _MMIOWRAP (lpBuffer, nNumberOfBytesToRead,
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(ReadFile (hFile, lpBuffer, nNumberOfBytesToRead,
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lpNumberOfBytesRead, lpOverlapped)));
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}
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#ifdef _WINSOCK_H
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extern inline int
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mmWSARecvFrom (SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
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LPDWORD lpNumberOfBytesRecvd, LPDWORD lpFlags,
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struct sockaddr* lpFrom,
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LPINT lpFromlen, LPWSAOVERLAPPED lpOverlapped,
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LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
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{
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return _MMSOCKWRAP (lpBuffers, dwBufferCount,
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(mmWSARecvFrom(s, lpBuffers, dwBufferCount,
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lpNumberOfBytesRecvd, lpFlags, lpFrom,
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lpFromlen, lpOverlapped,
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lpCompletionRoutine)));
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}
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#endif /*_WINSOCK_H*/
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#endif /*_MMAP_HELPER_H*/
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