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 * $FreeBSD$
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <pthread.h>
33#include <stdint.h>
34#include <stdlib.h>
35
36#include "threads.h"
37
38struct thrd_param {
39	thrd_start_t	 func;
40	void		*arg;
41};
42
43static void *
44thrd_entry(void *arg)
45{
46	struct thrd_param tp;
47
48	tp = *(struct thrd_param *)arg;
49	free(arg);
50	return ((void *)(intptr_t)tp.func(tp.arg));
51}
52
53int
54thrd_create(thrd_t *thr, thrd_start_t func, void *arg)
55{
56	struct thrd_param *tp;
57
58	/*
59	 * Work around return type inconsistency.  Wrap execution using
60	 * a function conforming to pthread_create()'s start_routine.
61	 */
62	tp = malloc(sizeof(*tp));
63	if (tp == NULL)
64		return (thrd_nomem);
65	tp->func = func;
66	tp->arg = arg;
67	if (pthread_create(thr, NULL, thrd_entry, tp) != 0) {
68		free(tp);
69		return (thrd_error);
70	}
71	return (thrd_success);
72}
73
74thrd_t
75thrd_current(void)
76{
77
78	return (pthread_self());
79}
80
81int
82thrd_detach(thrd_t thr)
83{
84
85	if (pthread_detach(thr) != 0)
86		return (thrd_error);
87	return (thrd_success);
88}
89
90int
91thrd_equal(thrd_t thr0, thrd_t thr1)
92{
93
94	return (pthread_equal(thr0, thr1));
95}
96
97_Noreturn void
98thrd_exit(int res)
99{
100
101	pthread_exit((void *)(intptr_t)res);
102}
103
104int
105thrd_join(thrd_t thr, int *res)
106{
107	void *value_ptr;
108
109	if (pthread_join(thr, &value_ptr) != 0)
110		return (thrd_error);
111	if (res != NULL)
112		*res = (intptr_t)value_ptr;
113	return (thrd_success);
114}
115
116int
117thrd_sleep(const struct timespec *duration, struct timespec *remaining)
118{
119
120	return (nanosleep(duration, remaining));
121}
122
123void
124thrd_yield(void)
125{
126
127	pthread_yield();
128}
129