cnd.c revision 331722 
1/*-
2 * Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/lib/libstdthreads/cnd.c 331722 2018-03-29 02:50:57Z eadler $
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/lib/libstdthreads/cnd.c 331722 2018-03-29 02:50:57Z eadler $");
31
32#include <errno.h>
33#include <pthread.h>
34
35#include "threads.h"
36
37int
38cnd_broadcast(cnd_t *cond)
39{
40
41	if (pthread_cond_broadcast(cond) != 0)
42		return (thrd_error);
43	return (thrd_success);
44}
45
46void
47cnd_destroy(cnd_t *cond)
48{
49
50	(void)pthread_cond_destroy(cond);
51}
52
53int
54cnd_init(cnd_t *cond)
55{
56
57	switch (pthread_cond_init(cond, NULL)) {
58	case 0:
59		return (thrd_success);
60	case ENOMEM:
61		return (thrd_nomem);
62	default:
63		return (thrd_error);
64	}
65}
66
67int
68cnd_signal(cnd_t *cond)
69{
70
71	if (pthread_cond_signal(cond) != 0)
72		return (thrd_error);
73	return (thrd_success);
74}
75
76int
77cnd_timedwait(cnd_t *restrict cond, mtx_t *restrict mtx,
78    const struct timespec *restrict ts)
79{
80
81	switch (pthread_cond_timedwait(cond, mtx, ts)) {
82	case 0:
83		return (thrd_success);
84	case ETIMEDOUT:
85		return (thrd_timedout);
86	default:
87		return (thrd_error);
88	}
89}
90
91int
92cnd_wait(cnd_t *cond, mtx_t *mtx)
93{
94
95	if (pthread_cond_wait(cond, mtx) != 0)
96		return (thrd_error);
97	return (thrd_success);
98}
99