_semaphore.h (2070B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2002 Alfred Perlstein <alfred@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #ifndef __SEMAPHORE_H_ 29 #define __SEMAPHORE_H_ 30 31 typedef intptr_t semid_t; 32 struct timespec; 33 34 #define SEM_VALUE_MAX __INT_MAX 35 36 #ifndef _KERNEL 37 38 __BEGIN_DECLS 39 40 int ksem_close(semid_t id); 41 int ksem_post(semid_t id); 42 int ksem_wait(semid_t id); 43 int ksem_trywait(semid_t id); 44 int ksem_timedwait(semid_t id, const struct timespec *abstime); 45 int ksem_init(semid_t *idp, unsigned int value); 46 int ksem_open(semid_t *idp, const char *name, int oflag, mode_t mode, 47 unsigned int value); 48 int ksem_unlink(const char *name); 49 int ksem_getvalue(semid_t id, int *val); 50 int ksem_destroy(semid_t id); 51 52 __END_DECLS 53 54 #endif /* !_KERNEL */ 55 56 #endif /* __SEMAPHORE_H_ */