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