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
31typedef intptr_t semid_t;
32struct timespec;
33
34#define SEM_VALUE_MAX __INT_MAX
35
36#ifndef _KERNEL
37
38__BEGIN_DECLS
39
40int ksem_close(semid_t id);
41int ksem_post(semid_t id);
42int ksem_wait(semid_t id);
43int ksem_trywait(semid_t id);
44int ksem_timedwait(semid_t id, const struct timespec *abstime);
45int ksem_init(semid_t *idp, unsigned int value);
46int ksem_open(semid_t *idp, const char *name, int oflag, mode_t mode,
47 unsigned int value);
48int ksem_unlink(const char *name);
49int ksem_getvalue(semid_t id, int *val);
50int ksem_destroy(semid_t id);
51
52__END_DECLS
53
54#endif /* !_KERNEL */
55
56#endif /* __SEMAPHORE_H_ */