xref: /freebsd/lib/libthr/thread/thr_sem.c (revision cc68614da8232d8baaca0ae0d0dd8f890f06623e)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (C) 2005 David Xu <davidxu@freebsd.org>.
5  * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice(s), this list of conditions and the following disclaimer as
13  *    the first lines of this file unmodified other than the possible
14  *    addition of one or more copyright notices.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice(s), this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
29  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 
36 #include "namespace.h"
37 #include <sys/types.h>
38 #include <sys/queue.h>
39 #include <errno.h>
40 #include <fcntl.h>
41 #include <pthread.h>
42 #include <stdlib.h>
43 #include <time.h>
44 #include <_semaphore.h>
45 #include "un-namespace.h"
46 
47 #include "thr_private.h"
48 
49 FB10_COMPAT(_sem_init_compat, sem_init);
50 FB10_COMPAT(_sem_destroy_compat, sem_destroy);
51 FB10_COMPAT(_sem_getvalue_compat, sem_getvalue);
52 FB10_COMPAT(_sem_trywait_compat, sem_trywait);
53 FB10_COMPAT(_sem_wait_compat, sem_wait);
54 FB10_COMPAT(_sem_timedwait_compat, sem_timedwait);
55 FB10_COMPAT(_sem_post_compat, sem_post);
56 
57 typedef struct sem *sem_t;
58 
59 extern int _libc_sem_init_compat(sem_t *sem, int pshared, unsigned int value);
60 extern int _libc_sem_destroy_compat(sem_t *sem);
61 extern int _libc_sem_getvalue_compat(sem_t * __restrict sem, int * __restrict sval);
62 extern int _libc_sem_trywait_compat(sem_t *sem);
63 extern int _libc_sem_wait_compat(sem_t *sem);
64 extern int _libc_sem_timedwait_compat(sem_t * __restrict sem,
65     const struct timespec * __restrict abstime);
66 extern int _libc_sem_post_compat(sem_t *sem);
67 
68 int _sem_init_compat(sem_t *sem, int pshared, unsigned int value);
69 int _sem_destroy_compat(sem_t *sem);
70 int _sem_getvalue_compat(sem_t * __restrict sem, int * __restrict sval);
71 int _sem_trywait_compat(sem_t *sem);
72 int _sem_wait_compat(sem_t *sem);
73 int _sem_timedwait_compat(sem_t * __restrict sem,
74     const struct timespec * __restrict abstime);
75 int _sem_post_compat(sem_t *sem);
76 
77 int
78 _sem_init_compat(sem_t *sem, int pshared, unsigned int value)
79 {
80 	return _libc_sem_init_compat(sem, pshared, value);
81 }
82 
83 int
84 _sem_destroy_compat(sem_t *sem)
85 {
86 	return _libc_sem_destroy_compat(sem);
87 }
88 
89 int
90 _sem_getvalue_compat(sem_t * __restrict sem, int * __restrict sval)
91 {
92 	return _libc_sem_getvalue_compat(sem, sval);
93 }
94 
95 int
96 _sem_trywait_compat(sem_t *sem)
97 {
98 	return _libc_sem_trywait_compat(sem);
99 }
100 
101 int
102 _sem_wait_compat(sem_t *sem)
103 {
104 	return _libc_sem_wait_compat(sem);
105 }
106 
107 int
108 _sem_timedwait_compat(sem_t * __restrict sem,
109     const struct timespec * __restrict abstime)
110 {
111 	return _libc_sem_timedwait_compat(sem, abstime);
112 }
113 
114 int
115 _sem_post_compat(sem_t *sem)
116 {
117 	return _libc_sem_post_compat(sem);
118 }
119