xref: /freebsd/lib/libthr/thread/thr_getprio.c (revision 3279301186099f2fe0a3b98f05944434d84c056a)
1bb535300SJeff Roberson /*
2bb535300SJeff Roberson  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
3bb535300SJeff Roberson  * All rights reserved.
4bb535300SJeff Roberson  *
5bb535300SJeff Roberson  * Redistribution and use in source and binary forms, with or without
6bb535300SJeff Roberson  * modification, are permitted provided that the following conditions
7bb535300SJeff Roberson  * are met:
8bb535300SJeff Roberson  * 1. Redistributions of source code must retain the above copyright
9bb535300SJeff Roberson  *    notice, this list of conditions and the following disclaimer.
10bb535300SJeff Roberson  * 2. Redistributions in binary form must reproduce the above copyright
11bb535300SJeff Roberson  *    notice, this list of conditions and the following disclaimer in the
12bb535300SJeff Roberson  *    documentation and/or other materials provided with the distribution.
13fed32d75SWarner Losh  * 3. Neither the name of the author nor the names of any co-contributors
14bb535300SJeff Roberson  *    may be used to endorse or promote products derived from this software
15bb535300SJeff Roberson  *    without specific prior written permission.
16bb535300SJeff Roberson  *
17bb535300SJeff Roberson  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18bb535300SJeff Roberson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19bb535300SJeff Roberson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20bb535300SJeff Roberson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21bb535300SJeff Roberson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22bb535300SJeff Roberson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23bb535300SJeff Roberson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24bb535300SJeff Roberson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25bb535300SJeff Roberson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26bb535300SJeff Roberson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27bb535300SJeff Roberson  * SUCH DAMAGE.
28bb535300SJeff Roberson  */
29*32793011SKonstantin Belousov 
30*32793011SKonstantin Belousov #include <sys/cdefs.h>
31*32793011SKonstantin Belousov __FBSDID("$FreeBSD$");
32*32793011SKonstantin Belousov 
3337a6356bSDavid Xu #include "namespace.h"
34bb535300SJeff Roberson #include <errno.h>
35bb535300SJeff Roberson #include <pthread.h>
3637a6356bSDavid Xu #include "un-namespace.h"
37bb535300SJeff Roberson #include "thr_private.h"
38bb535300SJeff Roberson 
39bb535300SJeff Roberson __weak_reference(_pthread_getprio, pthread_getprio);
40bb535300SJeff Roberson 
41bb535300SJeff Roberson int
42bb535300SJeff Roberson _pthread_getprio(pthread_t pthread)
43bb535300SJeff Roberson {
44bb535300SJeff Roberson 	int policy, ret;
45bb535300SJeff Roberson 	struct sched_param param;
46bb535300SJeff Roberson 
4737a6356bSDavid Xu 	if ((ret = _pthread_getschedparam(pthread, &policy, &param)) == 0)
48bb535300SJeff Roberson 		ret = param.sched_priority;
49bb535300SJeff Roberson 	else {
50bb535300SJeff Roberson 		/* Invalid thread: */
51bb535300SJeff Roberson 		errno = ret;
52bb535300SJeff Roberson 		ret = -1;
53bb535300SJeff Roberson 	}
54bb535300SJeff Roberson 
55bb535300SJeff Roberson 	/* Return the thread priority or an error status: */
56bb535300SJeff Roberson 	return (ret);
57bb535300SJeff Roberson }
58