xref: /freebsd/lib/libthr/thread/thr_yield.c (revision f8bbbce4)
18a16b7a1SPedro F. Giffuni /*-
28a16b7a1SPedro F. Giffuni  * SPDX-License-Identifier: BSD-3-Clause
38a16b7a1SPedro F. Giffuni  *
4bb535300SJeff Roberson  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
5bb535300SJeff Roberson  * All rights reserved.
6bb535300SJeff Roberson  *
7bb535300SJeff Roberson  * Redistribution and use in source and binary forms, with or without
8bb535300SJeff Roberson  * modification, are permitted provided that the following conditions
9bb535300SJeff Roberson  * are met:
10bb535300SJeff Roberson  * 1. Redistributions of source code must retain the above copyright
11bb535300SJeff Roberson  *    notice, this list of conditions and the following disclaimer.
12bb535300SJeff Roberson  * 2. Redistributions in binary form must reproduce the above copyright
13bb535300SJeff Roberson  *    notice, this list of conditions and the following disclaimer in the
14bb535300SJeff Roberson  *    documentation and/or other materials provided with the distribution.
15fed32d75SWarner Losh  * 3. Neither the name of the author nor the names of any co-contributors
16bb535300SJeff Roberson  *    may be used to endorse or promote products derived from this software
17bb535300SJeff Roberson  *    without specific prior written permission.
18bb535300SJeff Roberson  *
19bb535300SJeff Roberson  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
20bb535300SJeff Roberson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21bb535300SJeff Roberson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22bb535300SJeff Roberson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23bb535300SJeff Roberson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24bb535300SJeff Roberson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25bb535300SJeff Roberson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26bb535300SJeff Roberson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27bb535300SJeff Roberson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28bb535300SJeff Roberson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29bb535300SJeff Roberson  * SUCH DAMAGE.
30bb535300SJeff Roberson  */
3137a6356bSDavid Xu 
3237a6356bSDavid Xu #include "namespace.h"
33bb535300SJeff Roberson #include <pthread.h>
3437a6356bSDavid Xu #include <sched.h>
3537a6356bSDavid Xu #include "un-namespace.h"
36bb535300SJeff Roberson 
37bb535300SJeff Roberson __weak_reference(_pthread_yield, pthread_yield);
38bb535300SJeff Roberson 
39bb535300SJeff Roberson /* Draft 4 yield */
40bb535300SJeff Roberson void
_pthread_yield(void)41bb535300SJeff Roberson _pthread_yield(void)
42bb535300SJeff Roberson {
43bb535300SJeff Roberson 
44bb535300SJeff Roberson 	sched_yield();
45bb535300SJeff Roberson }
46