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//
// select.h
//
// Select from file descriptor set
//
// Copyright (C) 2002 Michael Ringgaard. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the project nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
#if _MSC_VER > 1000
#pragma once
#endif
#ifndef SYS_SELECT_H
#define SYS_SELECT_H
#include <sys/types.h>
#ifndef _TIMEVAL_DEFINED
#define _TIMEVAL_DEFINED
struct timeval {
long tv_sec; // Seconds
long tv_usec; // Microseconds
};
#endif
#ifndef FD_SETSIZE
#define FD_SETSIZE 64
#endif
#ifndef _FD_SET_DEFINED
#define _FD_SET_DEFINED
typedef struct fd_set {
unsigned int count;
int fd[FD_SETSIZE];
} fd_set;
#endif
#define FD_ZERO(set) _fd_zero(set)
#define FD_ISSET(fd, set) _fd_isset(fd, set)
#define FD_SET(fd, set) _fd_set(fd, set)
#define FD_CLR(fd, set) _fd_clr(fd, set)
#ifndef _FD_FUNCS_DEFINED
#define _FD_FUNCS_DEFINED
__inline void _fd_zero(fd_set *set) {
set->count = 0;
}
__inline int _fd_isset(int fd, fd_set *set) {
unsigned int i;
for (i = 0; i < set->count; i++) if (set->fd[i] == fd) return 1;
return 0;
}
__inline void _fd_set(int fd, fd_set *set) {
if (set->count < FD_SETSIZE) set->fd[set->count++] = fd;
}
__inline void _fd_clr(int fd, fd_set *set) {
unsigned int i;
for (i = 0; i < set->count ; i++) {
if (set->fd[i] == fd) {
while (i < set->count - 1) {
set->fd[i] = set->fd[i + 1];
i++;
}
set->count--;
break;
}
}
}
#endif
#ifdef __cplusplus
extern "C" {
#endif
osapi int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, const struct timeval *timeout);
#ifdef __cplusplus
}
#endif
#endif