1*a9ca1710Skamil /* $NetBSD: cnd.c,v 1.1 2019/04/24 11:43:19 kamil Exp $ */
2*a9ca1710Skamil
3*a9ca1710Skamil /*-
4*a9ca1710Skamil * Copyright (c) 2016 The NetBSD Foundation, Inc.
5*a9ca1710Skamil * All rights reserved.
6*a9ca1710Skamil *
7*a9ca1710Skamil * This code is derived from software contributed to The NetBSD Foundation
8*a9ca1710Skamil * by Kamil Rytarowski.
9*a9ca1710Skamil *
10*a9ca1710Skamil * Redistribution and use in source and binary forms, with or without
11*a9ca1710Skamil * modification, are permitted provided that the following conditions
12*a9ca1710Skamil * are met:
13*a9ca1710Skamil * 1. Redistributions of source code must retain the above copyright
14*a9ca1710Skamil * notice, this list of conditions and the following disclaimer.
15*a9ca1710Skamil * 2. Redistributions in binary form must reproduce the above copyright
16*a9ca1710Skamil * notice, this list of conditions and the following disclaimer in the
17*a9ca1710Skamil * documentation and/or other materials provided with the distribution.
18*a9ca1710Skamil *
19*a9ca1710Skamil * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*a9ca1710Skamil * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*a9ca1710Skamil * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*a9ca1710Skamil * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*a9ca1710Skamil * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*a9ca1710Skamil * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*a9ca1710Skamil * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*a9ca1710Skamil * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*a9ca1710Skamil * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*a9ca1710Skamil * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*a9ca1710Skamil * POSSIBILITY OF SUCH DAMAGE.
30*a9ca1710Skamil */
31*a9ca1710Skamil
32*a9ca1710Skamil #include <sys/cdefs.h>
33*a9ca1710Skamil __RCSID("$NetBSD: cnd.c,v 1.1 2019/04/24 11:43:19 kamil Exp $");
34*a9ca1710Skamil
35*a9ca1710Skamil #include <assert.h>
36*a9ca1710Skamil #include <errno.h>
37*a9ca1710Skamil #include <pthread.h>
38*a9ca1710Skamil #include <threads.h>
39*a9ca1710Skamil
40*a9ca1710Skamil int
cnd_broadcast(cnd_t * cond)41*a9ca1710Skamil cnd_broadcast(cnd_t *cond)
42*a9ca1710Skamil {
43*a9ca1710Skamil
44*a9ca1710Skamil _DIAGASSERT(cond != NULL);
45*a9ca1710Skamil
46*a9ca1710Skamil if (pthread_cond_broadcast(cond) == 0)
47*a9ca1710Skamil return thrd_success;
48*a9ca1710Skamil
49*a9ca1710Skamil return thrd_error;
50*a9ca1710Skamil }
51*a9ca1710Skamil
52*a9ca1710Skamil void
cnd_destroy(cnd_t * cond)53*a9ca1710Skamil cnd_destroy(cnd_t *cond)
54*a9ca1710Skamil {
55*a9ca1710Skamil
56*a9ca1710Skamil _DIAGASSERT(cond != NULL);
57*a9ca1710Skamil
58*a9ca1710Skamil /*
59*a9ca1710Skamil * The cnd_destroy(3) function that conforms to C11 returns no value.
60*a9ca1710Skamil */
61*a9ca1710Skamil (void)pthread_cond_destroy(cond);
62*a9ca1710Skamil }
63*a9ca1710Skamil
64*a9ca1710Skamil int
cnd_init(cnd_t * cond)65*a9ca1710Skamil cnd_init(cnd_t *cond)
66*a9ca1710Skamil {
67*a9ca1710Skamil
68*a9ca1710Skamil _DIAGASSERT(cond != NULL);
69*a9ca1710Skamil
70*a9ca1710Skamil if (pthread_cond_init(cond, NULL) == 0)
71*a9ca1710Skamil return thrd_success;
72*a9ca1710Skamil
73*a9ca1710Skamil return thrd_error;
74*a9ca1710Skamil }
75*a9ca1710Skamil
76*a9ca1710Skamil int
cnd_signal(cnd_t * cond)77*a9ca1710Skamil cnd_signal(cnd_t *cond)
78*a9ca1710Skamil {
79*a9ca1710Skamil
80*a9ca1710Skamil _DIAGASSERT(cond != NULL);
81*a9ca1710Skamil
82*a9ca1710Skamil if (pthread_cond_signal(cond) == 0)
83*a9ca1710Skamil return thrd_success;
84*a9ca1710Skamil
85*a9ca1710Skamil return thrd_error;
86*a9ca1710Skamil }
87*a9ca1710Skamil
88*a9ca1710Skamil int
cnd_timedwait(cnd_t * __restrict cond,mtx_t * __restrict mtx,const struct timespec * __restrict ts)89*a9ca1710Skamil cnd_timedwait(cnd_t * __restrict cond, mtx_t * __restrict mtx,
90*a9ca1710Skamil const struct timespec * __restrict ts)
91*a9ca1710Skamil {
92*a9ca1710Skamil
93*a9ca1710Skamil _DIAGASSERT(cond != NULL);
94*a9ca1710Skamil _DIAGASSERT(mtx != NULL);
95*a9ca1710Skamil _DIAGASSERT(ts != NULL);
96*a9ca1710Skamil
97*a9ca1710Skamil switch (pthread_cond_timedwait(cond, mtx, ts)) {
98*a9ca1710Skamil case 0:
99*a9ca1710Skamil return thrd_success;
100*a9ca1710Skamil case ETIMEDOUT:
101*a9ca1710Skamil return thrd_timedout;
102*a9ca1710Skamil default:
103*a9ca1710Skamil return thrd_error;
104*a9ca1710Skamil }
105*a9ca1710Skamil }
106*a9ca1710Skamil
107*a9ca1710Skamil int
cnd_wait(cnd_t * cond,mtx_t * mtx)108*a9ca1710Skamil cnd_wait(cnd_t *cond, mtx_t *mtx)
109*a9ca1710Skamil {
110*a9ca1710Skamil
111*a9ca1710Skamil _DIAGASSERT(cond != NULL);
112*a9ca1710Skamil _DIAGASSERT(mtx != NULL);
113*a9ca1710Skamil
114*a9ca1710Skamil if (pthread_cond_wait(cond, mtx) == 0)
115*a9ca1710Skamil return thrd_success;
116*a9ca1710Skamil
117*a9ca1710Skamil return thrd_error;
118*a9ca1710Skamil }
119