1bb535300SJeff Roberson /* 2bb535300SJeff Roberson * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>. 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. 13bb535300SJeff Roberson * 3. All advertising materials mentioning features or use of this software 14bb535300SJeff Roberson * must display the following acknowledgement: 15bb535300SJeff Roberson * This product includes software developed by Daniel Eischen. 16bb535300SJeff Roberson * 4. Neither the name of the author nor the names of any co-contributors 17bb535300SJeff Roberson * may be used to endorse or promote products derived from this software 18bb535300SJeff Roberson * without specific prior written permission. 19bb535300SJeff Roberson * 20bb535300SJeff Roberson * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS'' AND 21bb535300SJeff Roberson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22bb535300SJeff Roberson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23bb535300SJeff Roberson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24bb535300SJeff Roberson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25bb535300SJeff Roberson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26bb535300SJeff Roberson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27bb535300SJeff Roberson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28bb535300SJeff Roberson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29bb535300SJeff Roberson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30bb535300SJeff Roberson * SUCH DAMAGE. 31bb535300SJeff Roberson * 32bb535300SJeff Roberson * $FreeBSD$ 33bb535300SJeff Roberson */ 34a091d823SDavid Xu 3537a6356bSDavid Xu #include "namespace.h" 36bb535300SJeff Roberson #include <sys/param.h> 3737a6356bSDavid Xu #include <errno.h> 38bb535300SJeff Roberson #include <pthread.h> 3937a6356bSDavid Xu #include "un-namespace.h" 40a091d823SDavid Xu 41bb535300SJeff Roberson #include "thr_private.h" 42bb535300SJeff Roberson 43bb535300SJeff Roberson __weak_reference(_pthread_setschedparam, pthread_setschedparam); 44bb535300SJeff Roberson 459ad4b644SDavid Xu /* 469ad4b644SDavid Xu * Set a thread's scheduling parameters, this should be done 479ad4b644SDavid Xu * in kernel, doing it in userland is no-op. 489ad4b644SDavid Xu */ 49bb535300SJeff Roberson int 50bb535300SJeff Roberson _pthread_setschedparam(pthread_t pthread, int policy, 51bb535300SJeff Roberson const struct sched_param *param) 52bb535300SJeff Roberson { 53a091d823SDavid Xu struct pthread *curthread = _get_curthread(); 547b4f8f03SDavid Xu int ret; 55bb535300SJeff Roberson 567b4f8f03SDavid Xu if (pthread == curthread) { 57*7e0cf81bSDavid Xu pthread = curthread; 587b4f8f03SDavid Xu THR_LOCK(curthread); 5912dbbf86SDavid Xu } else if ((ret = _thr_find_thread(curthread, pthread, 60*7e0cf81bSDavid Xu /*include dead*/0)) != 0) 61*7e0cf81bSDavid Xu return (ret); 62e2dc286cSDavid Xu if (pthread->attr.sched_policy == policy && 63e2dc286cSDavid Xu (policy == SCHED_OTHER || 64e2dc286cSDavid Xu pthread->attr.prio == param->sched_priority)) { 65e2dc286cSDavid Xu pthread->attr.prio = param->sched_priority; 66e2dc286cSDavid Xu THR_THREAD_UNLOCK(curthread, pthread); 67e2dc286cSDavid Xu return (0); 68e2dc286cSDavid Xu } 69e6747c7cSDavid Xu ret = _thr_setscheduler(pthread->tid, policy, param); 707b4f8f03SDavid Xu if (ret == -1) 717b4f8f03SDavid Xu ret = errno; 72a091d823SDavid Xu else { 737b4f8f03SDavid Xu pthread->attr.sched_policy = policy; 747b4f8f03SDavid Xu pthread->attr.prio = param->sched_priority; 75a091d823SDavid Xu } 767b4f8f03SDavid Xu THR_THREAD_UNLOCK(curthread, pthread); 77a091d823SDavid Xu return (ret); 78bb535300SJeff Roberson } 79