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/* select.h
Copyright 1998, 1999, 2000, 2001 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. */
/* Winsock select() types and macros */
/*
* Use this struct to interface to
* the system provided select.
*/
typedef struct winsock_fd_set
{
unsigned int fd_count;
HANDLE fd_array[1024]; /* Dynamically allocated. */
} winsock_fd_set;
/*
* Define the Win32 winsock definitions to have a prefix WINSOCK_
* so we can be explicit when we are using them.
*/
#define WINSOCK_FD_ISSET(fd, set) __WSAFDIsSet ((SOCKET)fd, (fd_set *)set)
#define WINSOCK_FD_SET(fd, set) do { \
(set)->fd_array[(set)->fd_count++]=fd;\
} while(0)
#define WINSOCK_FD_ZERO(set) ((set)->fd_count = 0)
#define WINSOCK_FD_CLR(fd, set) do { \
u_int __i; \
for (__i = 0; __i < (set)->fd_count ; __i++) { \
if ((set)->fd_array[__i] == fd) { \
while (__i < (set)->fd_count-1) { \
(set)->fd_array[__i] = \
(set)->fd_array[__i+1]; \
__i++; \
} \
(set)->fd_count--; \
break; \
} \
} \
} while(0)
extern "C" int PASCAL __WSAFDIsSet(SOCKET, fd_set*);
extern "C" int PASCAL win32_select(int, fd_set*, fd_set*, fd_set*, const struct timeval*);
/*
* call to winsock's select() -
* type coercion need to appease confused prototypes
*/
#define WINSOCK_SELECT(nfd, rd, wr, ex, timeo) \
win32_select (nfd, (fd_set *)rd, (fd_set *)wr, (fd_set *)ex, timeo)
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