1*f14fb602SLionel Sambuc /* $NetBSD: semaphore.h,v 1.4 2012/03/08 21:59:28 joerg Exp $ */ 22fe8fb19SBen Gras 32fe8fb19SBen Gras /*- 42fe8fb19SBen Gras * Copyright (c) 2003 The NetBSD Foundation, Inc. 52fe8fb19SBen Gras * All rights reserved. 62fe8fb19SBen Gras * 72fe8fb19SBen Gras * This code is derived from software contributed to The NetBSD Foundation 82fe8fb19SBen Gras * by Christos Zoulas. 92fe8fb19SBen Gras * 102fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 112fe8fb19SBen Gras * modification, are permitted provided that the following conditions 122fe8fb19SBen Gras * are met: 132fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 142fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 152fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 162fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 172fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 182fe8fb19SBen Gras * 192fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 202fe8fb19SBen Gras * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 212fe8fb19SBen Gras * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 222fe8fb19SBen Gras * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 232fe8fb19SBen Gras * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 242fe8fb19SBen Gras * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 252fe8fb19SBen Gras * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 262fe8fb19SBen Gras * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 272fe8fb19SBen Gras * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 282fe8fb19SBen Gras * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 292fe8fb19SBen Gras * POSSIBILITY OF SUCH DAMAGE. 302fe8fb19SBen Gras */ 312fe8fb19SBen Gras 322fe8fb19SBen Gras #ifndef _SEMAPHORE_H_ 332fe8fb19SBen Gras #define _SEMAPHORE_H_ 342fe8fb19SBen Gras 352fe8fb19SBen Gras /* POSIX 1003.1b semaphores */ 362fe8fb19SBen Gras 372fe8fb19SBen Gras struct _sem_st; 382fe8fb19SBen Gras typedef struct _sem_st *sem_t; 392fe8fb19SBen Gras 402fe8fb19SBen Gras #define SEM_FAILED ((sem_t *)0) 412fe8fb19SBen Gras #define SEM_VALUE_MAX (~0U) 422fe8fb19SBen Gras 43*f14fb602SLionel Sambuc #include <sys/time.h> 442fe8fb19SBen Gras 452fe8fb19SBen Gras __BEGIN_DECLS 462fe8fb19SBen Gras int sem_close(sem_t *); 472fe8fb19SBen Gras int sem_destroy(sem_t *); 482fe8fb19SBen Gras int sem_getvalue(sem_t * __restrict, int * __restrict); 492fe8fb19SBen Gras int sem_init(sem_t *, int, unsigned int); 502fe8fb19SBen Gras int sem_post(sem_t *); 51*f14fb602SLionel Sambuc int sem_timedwait(sem_t *, const struct timespec * __restrict); 522fe8fb19SBen Gras int sem_trywait(sem_t *); 532fe8fb19SBen Gras int sem_unlink(const char *); 542fe8fb19SBen Gras int sem_wait(sem_t *); 552fe8fb19SBen Gras sem_t *sem_open(const char *, int, ...); 562fe8fb19SBen Gras __END_DECLS 572fe8fb19SBen Gras 582fe8fb19SBen Gras #endif /* !_SEMAPHORE_H_ */ 59