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