1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011 Ed Schouten <[email protected]>
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 <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 #include <pthread.h>
35 #include <stdint.h>
36 #include <stdlib.h>
37
38 #include "threads.h"
39
40 struct thrd_param {
41 thrd_start_t func;
42 void *arg;
43 };
44
45 static void *
thrd_entry(void * arg)46 thrd_entry(void *arg)
47 {
48 struct thrd_param tp;
49
50 tp = *(struct thrd_param *)arg;
51 free(arg);
52 return ((void *)(intptr_t)tp.func(tp.arg));
53 }
54
55 int
thrd_create(thrd_t * thr,thrd_start_t func,void * arg)56 thrd_create(thrd_t *thr, thrd_start_t func, void *arg)
57 {
58 struct thrd_param *tp;
59
60 /*
61 * Work around return type inconsistency. Wrap execution using
62 * a function conforming to pthread_create()'s start_routine.
63 */
64 tp = malloc(sizeof(*tp));
65 if (tp == NULL)
66 return (thrd_nomem);
67 tp->func = func;
68 tp->arg = arg;
69 if (pthread_create(thr, NULL, thrd_entry, tp) != 0) {
70 free(tp);
71 return (thrd_error);
72 }
73 return (thrd_success);
74 }
75
76 thrd_t
thrd_current(void)77 thrd_current(void)
78 {
79
80 return (pthread_self());
81 }
82
83 int
thrd_detach(thrd_t thr)84 thrd_detach(thrd_t thr)
85 {
86
87 if (pthread_detach(thr) != 0)
88 return (thrd_error);
89 return (thrd_success);
90 }
91
92 int
thrd_equal(thrd_t thr0,thrd_t thr1)93 thrd_equal(thrd_t thr0, thrd_t thr1)
94 {
95
96 return (pthread_equal(thr0, thr1));
97 }
98
99 _Noreturn void
thrd_exit(int res)100 thrd_exit(int res)
101 {
102
103 pthread_exit((void *)(intptr_t)res);
104 }
105
106 int
thrd_join(thrd_t thr,int * res)107 thrd_join(thrd_t thr, int *res)
108 {
109 void *value_ptr;
110
111 if (pthread_join(thr, &value_ptr) != 0)
112 return (thrd_error);
113 if (res != NULL)
114 *res = (intptr_t)value_ptr;
115 return (thrd_success);
116 }
117
118 int
thrd_sleep(const struct timespec * duration,struct timespec * remaining)119 thrd_sleep(const struct timespec *duration, struct timespec *remaining)
120 {
121
122 return (nanosleep(duration, remaining));
123 }
124
125 void
thrd_yield(void)126 thrd_yield(void)
127 {
128
129 pthread_yield();
130 }
131