_semaphore.h revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD: stable/11/sys/sys/_semaphore.h 330897 2018-03-14 03:19:51Z eadler $ 29 */ 30#ifndef __SEMAPHORE_H_ 31#define __SEMAPHORE_H_ 32 33typedef intptr_t semid_t; 34struct timespec; 35 36#define SEM_VALUE_MAX __INT_MAX 37 38#ifndef _KERNEL 39 40__BEGIN_DECLS 41 42int ksem_close(semid_t id); 43int ksem_post(semid_t id); 44int ksem_wait(semid_t id); 45int ksem_trywait(semid_t id); 46int ksem_timedwait(semid_t id, const struct timespec *abstime); 47int ksem_init(semid_t *idp, unsigned int value); 48int ksem_open(semid_t *idp, const char *name, int oflag, mode_t mode, 49 unsigned int value); 50int ksem_unlink(const char *name); 51int ksem_getvalue(semid_t id, int *val); 52int ksem_destroy(semid_t id); 53 54__END_DECLS 55 56#endif /* !_KERNEL */ 57 58#endif /* __SEMAPHORE_H_ */ 59