1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011 Ed Schouten <ed@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 * $FreeBSD$
29 */
30
31 #include <threads.h>
32
33 #include <pthread.h>
34 #include <stdint.h>
35 #include <stdlib.h>
36
37 #include <errno.h>
38
39 struct thrd_param {
40 thrd_start_t func;
41 void *arg;
42 };
43
44 static void *
thrd_entry(void * arg)45 thrd_entry(void *arg)
46 {
47 struct thrd_param tp;
48
49 tp = *(struct thrd_param *)arg;
50 free(arg);
51 return ((void *)(intptr_t)tp.func(tp.arg));
52 }
53
54 int
thrd_create(thrd_t * thr,thrd_start_t func,void * arg)55 thrd_create(thrd_t *thr, thrd_start_t func, void *arg)
56 {
57 struct thrd_param *tp;
58
59 /*
60 * Work around return type inconsistency. Wrap execution using
61 * a function conforming to pthread_create()'s start_routine.
62 */
63 tp = malloc(sizeof(*tp));
64 if (tp == NULL)
65 return (thrd_nomem);
66 tp->func = func;
67 tp->arg = arg;
68 if (pthread_create(thr, NULL, thrd_entry, tp) != 0) {
69 free(tp);
70 return (thrd_error);
71 }
72 return (thrd_success);
73 }
74
75 thrd_t
thrd_current(void)76 thrd_current(void)
77 {
78
79 return (pthread_self());
80 }
81
82 int
thrd_detach(thrd_t thr)83 thrd_detach(thrd_t thr)
84 {
85
86 if (pthread_detach(thr) != 0)
87 return (thrd_error);
88 return (thrd_success);
89 }
90
91 int
thrd_equal(thrd_t thr0,thrd_t thr1)92 thrd_equal(thrd_t thr0, thrd_t thr1)
93 {
94
95 return (pthread_equal(thr0, thr1));
96 }
97
98 _Noreturn void
thrd_exit(int res)99 thrd_exit(int res)
100 {
101
102 pthread_exit((void *)(intptr_t)res);
103 }
104
105 int
thrd_join(thrd_t thr,int * res)106 thrd_join(thrd_t thr, int *res)
107 {
108 void *value_ptr;
109
110 if (pthread_join(thr, &value_ptr) != 0)
111 return (thrd_error);
112 if (res != NULL)
113 *res = (intptr_t)value_ptr;
114 return (thrd_success);
115 }
116
117 int
thrd_sleep(const struct timespec * duration,struct timespec * remaining)118 thrd_sleep(const struct timespec *duration, struct timespec *remaining)
119 {
120
121 return (nanosleep(duration, remaining));
122 }
123
124 void
thrd_yield(void)125 thrd_yield(void)
126 {
127
128 sched_yield();
129 }
130