1/* $NetBSD: semaphore.h,v 1.5 2016/04/24 19:48:29 dholland Exp $ */
2
3/*-
4 * Copyright (c) 2003 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SEMAPHORE_H_
33#define _SEMAPHORE_H_
34
35/* POSIX 1003.1b semaphores */
36
37struct _sem_st;
38typedef	struct _sem_st *sem_t;
39
40#define	SEM_FAILED	((sem_t *)0)
41
42#include <sys/semaphore.h> /* some kernel-only bits */
43#include <sys/time.h>
44
45__BEGIN_DECLS
46int	 sem_close(sem_t *);
47int	 sem_destroy(sem_t *);
48int	 sem_getvalue(sem_t * __restrict, int * __restrict);
49int	 sem_init(sem_t *, int, unsigned int);
50int	 sem_post(sem_t *);
51int	 sem_timedwait(sem_t *, const struct timespec * __restrict);
52int	 sem_trywait(sem_t *);
53int	 sem_unlink(const char *);
54int	 sem_wait(sem_t *);
55sem_t	*sem_open(const char *, int, ...);
56__END_DECLS
57
58#endif /* !_SEMAPHORE_H_ */
59