19b0f1823SDavid Xu /* 29b0f1823SDavid Xu * Copyright (c) 2010 David Xu <davidxu@freebsd.org> 39b0f1823SDavid Xu * 49b0f1823SDavid Xu * All rights reserved. 59b0f1823SDavid Xu * 69b0f1823SDavid Xu * Redistribution and use in source and binary forms, with or without 79b0f1823SDavid Xu * modification, are permitted provided that the following conditions 89b0f1823SDavid Xu * are met: 99b0f1823SDavid Xu * 1. Redistributions of source code must retain the above copyright 109b0f1823SDavid Xu * notice unmodified, this list of conditions, and the following 119b0f1823SDavid Xu * disclaimer. 129b0f1823SDavid Xu * 2. Redistributions in binary form must reproduce the above copyright 139b0f1823SDavid Xu * notice, this list of conditions and the following disclaimer in the 149b0f1823SDavid Xu * documentation and/or other materials provided with the distribution. 159b0f1823SDavid Xu * 169b0f1823SDavid Xu * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 179b0f1823SDavid Xu * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 189b0f1823SDavid Xu * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 199b0f1823SDavid Xu * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 209b0f1823SDavid Xu * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 219b0f1823SDavid Xu * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 229b0f1823SDavid Xu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 239b0f1823SDavid Xu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 249b0f1823SDavid Xu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 259b0f1823SDavid Xu * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 269b0f1823SDavid Xu * 279b0f1823SDavid Xu * $FreeBSD$ 289b0f1823SDavid Xu */ 299b0f1823SDavid Xu 309b0f1823SDavid Xu /* semaphore.h: POSIX 1003.1b semaphores */ 319b0f1823SDavid Xu 329b0f1823SDavid Xu #ifndef _SEMAPHORE_H_ 339b0f1823SDavid Xu #define _SEMAPHORE_H_ 349b0f1823SDavid Xu 359b0f1823SDavid Xu #include <sys/cdefs.h> 369b0f1823SDavid Xu #include <sys/_types.h> 379b0f1823SDavid Xu #include <sys/_umtx.h> 389b0f1823SDavid Xu 399b0f1823SDavid Xu struct _sem { 409b0f1823SDavid Xu __uint32_t _magic; 419b0f1823SDavid Xu struct _usem _kern; 429b0f1823SDavid Xu }; 439b0f1823SDavid Xu 449b0f1823SDavid Xu typedef struct _sem sem_t; 459b0f1823SDavid Xu 469b0f1823SDavid Xu #define SEM_FAILED ((sem_t *)0) 479b0f1823SDavid Xu #define SEM_VALUE_MAX __INT_MAX 489b0f1823SDavid Xu 499b0f1823SDavid Xu struct timespec; 509b0f1823SDavid Xu 519b0f1823SDavid Xu __BEGIN_DECLS 529b0f1823SDavid Xu int sem_close(sem_t *); 539b0f1823SDavid Xu int sem_destroy(sem_t *); 549b0f1823SDavid Xu int sem_getvalue(sem_t * __restrict, int * __restrict); 559b0f1823SDavid Xu int sem_init(sem_t *, int, unsigned int); 569b0f1823SDavid Xu sem_t *sem_open(const char *, int, ...); 579b0f1823SDavid Xu int sem_post(sem_t *); 589b0f1823SDavid Xu int sem_timedwait(sem_t * __restrict, const struct timespec * __restrict); 599b0f1823SDavid Xu int sem_trywait(sem_t *); 609b0f1823SDavid Xu int sem_unlink(const char *); 619b0f1823SDavid Xu int sem_wait(sem_t *); 629b0f1823SDavid Xu __END_DECLS 639b0f1823SDavid Xu 649b0f1823SDavid Xu #endif /* !_SEMAPHORE_H_ */ 65