1e58eb3c4SPedro F. Giffuni /*- 2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 3e58eb3c4SPedro F. Giffuni * 49b0f1823SDavid Xu * Copyright (c) 2010 David Xu <davidxu@freebsd.org> 59b0f1823SDavid Xu * 69b0f1823SDavid Xu * All rights reserved. 79b0f1823SDavid Xu * 89b0f1823SDavid Xu * Redistribution and use in source and binary forms, with or without 99b0f1823SDavid Xu * modification, are permitted provided that the following conditions 109b0f1823SDavid Xu * are met: 119b0f1823SDavid Xu * 1. Redistributions of source code must retain the above copyright 129b0f1823SDavid Xu * notice unmodified, this list of conditions, and the following 139b0f1823SDavid Xu * disclaimer. 149b0f1823SDavid Xu * 2. Redistributions in binary form must reproduce the above copyright 159b0f1823SDavid Xu * notice, this list of conditions and the following disclaimer in the 169b0f1823SDavid Xu * documentation and/or other materials provided with the distribution. 179b0f1823SDavid Xu * 189b0f1823SDavid Xu * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 199b0f1823SDavid Xu * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 209b0f1823SDavid Xu * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 219b0f1823SDavid Xu * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 229b0f1823SDavid Xu * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 239b0f1823SDavid Xu * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 249b0f1823SDavid Xu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 259b0f1823SDavid Xu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 269b0f1823SDavid Xu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 279b0f1823SDavid Xu * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 289b0f1823SDavid Xu * 299b0f1823SDavid Xu * $FreeBSD$ 309b0f1823SDavid Xu */ 319b0f1823SDavid Xu 329b0f1823SDavid Xu /* semaphore.h: POSIX 1003.1b semaphores */ 339b0f1823SDavid Xu 349b0f1823SDavid Xu #ifndef _SEMAPHORE_H_ 359b0f1823SDavid Xu #define _SEMAPHORE_H_ 369b0f1823SDavid Xu 379b0f1823SDavid Xu #include <sys/cdefs.h> 389b0f1823SDavid Xu #include <sys/_types.h> 399b0f1823SDavid Xu #include <sys/_umtx.h> 409b0f1823SDavid Xu 41b90eeb5fSJilles Tjoelker #include <machine/_limits.h> 42b90eeb5fSJilles Tjoelker 439b0f1823SDavid Xu struct _sem { 449b0f1823SDavid Xu __uint32_t _magic; 4553e1ffbbSJohn Baldwin struct _usem2 _kern; 4653e1ffbbSJohn Baldwin __uint32_t _padding; /* Preserve structure size */ 479b0f1823SDavid Xu }; 489b0f1823SDavid Xu 499b0f1823SDavid Xu typedef struct _sem sem_t; 509b0f1823SDavid Xu 519b0f1823SDavid Xu #define SEM_FAILED ((sem_t *)0) 529b0f1823SDavid Xu #define SEM_VALUE_MAX __INT_MAX 539b0f1823SDavid Xu 549b0f1823SDavid Xu struct timespec; 559b0f1823SDavid Xu 569b0f1823SDavid Xu __BEGIN_DECLS 5781027fa5SEric van Gyzen #if __BSD_VISIBLE 5881027fa5SEric van Gyzen int sem_clockwait_np(sem_t * __restrict, __clockid_t, int, 5981027fa5SEric van Gyzen const struct timespec *, struct timespec *); 6081027fa5SEric van Gyzen #endif 619b0f1823SDavid Xu int sem_close(sem_t *); 629b0f1823SDavid Xu int sem_destroy(sem_t *); 639b0f1823SDavid Xu int sem_getvalue(sem_t * __restrict, int * __restrict); 649b0f1823SDavid Xu int sem_init(sem_t *, int, unsigned int); 659b0f1823SDavid Xu sem_t *sem_open(const char *, int, ...); 669b0f1823SDavid Xu int sem_post(sem_t *); 679b0f1823SDavid Xu int sem_timedwait(sem_t * __restrict, const struct timespec * __restrict); 689b0f1823SDavid Xu int sem_trywait(sem_t *); 699b0f1823SDavid Xu int sem_unlink(const char *); 709b0f1823SDavid Xu int sem_wait(sem_t *); 719b0f1823SDavid Xu __END_DECLS 729b0f1823SDavid Xu 739b0f1823SDavid Xu #endif /* !_SEMAPHORE_H_ */ 74