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/* mmap_helper.h
Copyright 2006, 2011 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _MMAP_HELPER_H
#define _MMAP_HELPER_H
#define _MMIOWRAP(__ptr, __len, __func) \
({ \
BOOL __res; \
for (int __i = 0; __i < 2; __i++) \
{ \
__res = __func; \
if (__res || __i > 0) \
break; \
DWORD __errcode = GetLastError (); \
if (__errcode != ERROR_NOACCESS) \
break; \
switch (mmap_is_attached_or_noreserve (__ptr, __len)) \
{ \
case MMAP_NORESERVE_COMMITED: \
continue; \
case MMAP_RAISE_SIGBUS: \
raise(SIGBUS); \
default: \
break; \
} \
break; \
} \
__res; \
})
#define _MMSOCKWRAP(__ptr, __count, __func) \
({ \
int __res; \
for (int __i = 0; __i < 2; __i++) \
{ \
__res = __func; \
if (!__res || __i > 0) \
break; \
DWORD __errcode = WSAGetLastError (); \
if (__errcode != WSAEFAULT) \
break; \
for (unsigned __j = 0; __j < __count; __j++) \
switch (mmap_is_attached_or_noreserve (__ptr[__j].buf, __ptr[__j].len)) \
{ \
case MMAP_NORESERVE_COMMITED: \
goto keeptrying; \
case MMAP_RAISE_SIGBUS: \
raise(SIGBUS); \
default: \
break; \
} \
break; \
keeptrying: \
continue; \
} \
__res; \
})
extern inline BOOL
mmReadFile (HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead,
LPDWORD lpNumberOfBytesRead, LPOVERLAPPED lpOverlapped)
{
return _MMIOWRAP (lpBuffer, nNumberOfBytesToRead,
(ReadFile (hFile, lpBuffer, nNumberOfBytesToRead,
lpNumberOfBytesRead, lpOverlapped)));
}
#ifdef _WINSOCK_H
extern inline int
mmWSARecvFrom (SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
LPDWORD lpNumberOfBytesRecvd, LPDWORD lpFlags,
struct sockaddr* lpFrom,
LPINT lpFromlen, LPWSAOVERLAPPED lpOverlapped,
LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
{
return _MMSOCKWRAP (lpBuffers, dwBufferCount,
(mmWSARecvFrom(s, lpBuffers, dwBufferCount,
lpNumberOfBytesRecvd, lpFlags, lpFrom,
lpFromlen, lpOverlapped,
lpCompletionRoutine)));
}
#endif /*_WINSOCK_H*/
#endif /*_MMAP_HELPER_H*/
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