2 * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Daniel Eischen.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include "namespace.h"
36 #include <sys/param.h>
39 #include "un-namespace.h"
41 #include "thr_private.h"
43 __weak_reference(_pthread_setschedparam, pthread_setschedparam);
46 * Set a thread's scheduling parameters, this should be done
47 * in kernel, doing it in userland is no-op.
50 _pthread_setschedparam(pthread_t pthread, int policy,
51 const struct sched_param *param)
53 struct pthread *curthread = _get_curthread();
56 if (pthread == curthread) {
58 if (curthread->attr.sched_policy == policy &&
59 (policy == SCHED_OTHER ||
60 curthread->attr.prio == param->sched_priority)) {
61 pthread->attr.prio = param->sched_priority;
62 THR_UNLOCK(curthread);
65 ret = _thr_setscheduler(curthread->tid, policy, param);
69 curthread->attr.sched_policy = policy;
70 curthread->attr.prio = param->sched_priority;
72 THR_UNLOCK(curthread);
73 } else if ((ret = _thr_ref_add(curthread, pthread, /*include dead*/0))
75 THR_THREAD_LOCK(curthread, pthread);
76 if (pthread->attr.sched_policy == policy &&
77 (policy == SCHED_OTHER ||
78 pthread->attr.prio == param->sched_priority)) {
79 pthread->attr.prio = param->sched_priority;
80 THR_THREAD_UNLOCK(curthread, pthread);
83 ret = _thr_setscheduler(pthread->tid, policy, param);
87 pthread->attr.sched_policy = policy;
88 pthread->attr.prio = param->sched_priority;
90 THR_THREAD_UNLOCK(curthread, pthread);
91 _thr_ref_delete(curthread, pthread);