90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
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* Copyright (c) 2013, 2016 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* sys/select.h
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* Waiting on multiple file descriptors.
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*/
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#ifndef _INCLUDE_SYS_SELECT_H
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#define _INCLUDE_SYS_SELECT_H
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#include <sys/cdefs.h>
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#include <sys/__/types.h>
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#include <string.h> /* TODO: HACK: for FD_ZERO */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef __time_t_defined
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#define __time_t_defined
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typedef __time_t time_t;
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#endif
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#ifndef __suseconds_t_defined
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#define __suseconds_t_defined
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typedef __suseconds_t suseconds_t;
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#endif
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#ifndef __timeval_defined
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#define __timeval_defined
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struct timeval
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{
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time_t tv_sec;
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suseconds_t tv_usec;
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};
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <sortix/sigset.h>
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#include <sortix/timespec.h>
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#define FD_SETSIZE 1024
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#define __FD_ELEM_SIZE ((int) sizeof(__fd_mask))
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#define __FD_ELEM_BITS (8 * __FD_ELEM_SIZE)
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typedef unsigned long __fd_mask;
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typedef struct
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{
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__fd_mask __fds_bits[FD_SETSIZE / (8 * (int) sizeof(__fd_mask))];
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} fd_set;
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#define __FD_INDEX(fd) ((fd) / __FD_ELEM_BITS)
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#define __FD_EXPONENT(fd) ((__fd_mask) (fd) % __FD_ELEM_BITS)
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#define __FD_MASK(fd) (1UL << __FD_EXPONENT(fd))
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#define __FD_ACCESS(fd, fdsetp) ((fdsetp)->__fds_bits[__FD_INDEX(fd)])
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#define FD_CLR(fd, fdsetp) (__FD_ACCESS(fd, fdsetp) &= ~__FD_MASK(fd))
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#define FD_ISSET(fd, fdsetp) (__FD_ACCESS(fd, fdsetp) & __FD_MASK(fd))
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#define FD_SET(fd, fdsetp) (__FD_ACCESS(fd, fdsetp) |= __FD_MASK(fd))
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#define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof(fd_set))
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/* TODO: pselect */
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int select(int, fd_set* __restrict, fd_set* __restrict, fd_set* __restrict,
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struct timeval* __restrict);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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