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90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
/*
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* @(#) $(JCGO)/minihdr/unix/sys/select.h --
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* a part of the minimalist "libc" headers for JCGO (Unix-specific).
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**
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* Project: JCGO (http://www.ivmaisoft.com/jcgo/)
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* Copyright (C) 2001-2009 Ivan Maidanski <ivmai@ivmaisoft.com>
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* All rights reserved.
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*/
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/*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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**
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* This software is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License (GPL) for more details.
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**
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* Linking this library statically or dynamically with other modules is
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* making a combined work based on this library. Thus, the terms and
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* conditions of the GNU General Public License cover the whole
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* combination.
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**
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* As a special exception, the copyright holders of this library give you
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* permission to link this library with independent modules to produce an
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* executable, regardless of the license terms of these independent
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* modules, and to copy and distribute the resulting executable under
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* terms of your choice, provided that you also meet, for each linked
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* independent module, the terms and conditions of the license of that
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* module. An independent module is a module which is not derived from
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* or based on this library. If you modify this library, you may extend
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* this exception to your version of the library, but you are not
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* obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*/
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#ifndef _SYS_SELECT_H
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#define _SYS_SELECT_H
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#ifndef _SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#ifndef FD_SETSIZE
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#define FD_SETSIZE 256 /* or 64, or 1024, or 65536 */
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#endif
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#ifndef _FD_MASK_DEFINED
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#define _FD_MASK_DEFINED
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typedef long fd_mask; /* or int */
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#endif
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#ifndef CHAR_BIT
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#define CHAR_BIT 8
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#endif
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#ifndef FD_SET
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#ifndef _NFDBITS
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#define _NFDBITS (sizeof(fd_mask) * CHAR_BIT)
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#endif
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typedef struct fd_set
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{
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fd_mask fds_bits[(FD_SETSIZE + (_NFDBITS - 1)) / _NFDBITS];
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} fd_set;
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#define FD_SET(fd, set) ((void)((fd) < FD_SETSIZE ? ((set)->fds_bits[(fd) / _NFDBITS] |= (fd_mask)1 << ((fd) % _NFDBITS)) : 0))
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#define FD_ISSET(fd, set) ((fd) < FD_SETSIZE && ((set)->fds_bits[(fd) / _NFDBITS] & ((fd_mask)1 << ((fd) % _NFDBITS))) != 0)
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#endif
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#ifndef FD_ZERO
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_EXPFUNC_BUILTIN void *_RTLENTRY_BUILTIN memset(void *, int, size_t)
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_ATTRIBUTE_NONNULL(1);
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#define FD_ZERO(set) ((void)memset(set, 0, sizeof(fd_set)))
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#endif
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_EXPFUNC int _RTLENTRY select(int, fd_set *, fd_set *, fd_set *,
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struct timeval *);
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#ifdef __cplusplus
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}
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#endif
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#endif
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