1112918Sjeff/* 2112918Sjeff * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>. 3112918Sjeff * All rights reserved. 4112918Sjeff * 5112918Sjeff * Redistribution and use in source and binary forms, with or without 6112918Sjeff * modification, are permitted provided that the following conditions 7112918Sjeff * are met: 8112918Sjeff * 1. Redistributions of source code must retain the above copyright 9112918Sjeff * notice, this list of conditions and the following disclaimer. 10112918Sjeff * 2. Redistributions in binary form must reproduce the above copyright 11112918Sjeff * notice, this list of conditions and the following disclaimer in the 12112918Sjeff * documentation and/or other materials provided with the distribution. 13112918Sjeff * 3. All advertising materials mentioning features or use of this software 14112918Sjeff * must display the following acknowledgement: 15112918Sjeff * This product includes software developed by Daniel Eischen. 16112918Sjeff * 4. Neither the name of the author nor the names of any co-contributors 17112918Sjeff * may be used to endorse or promote products derived from this software 18112918Sjeff * without specific prior written permission. 19112918Sjeff * 20112918Sjeff * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS'' AND 21112918Sjeff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22112918Sjeff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23112918Sjeff * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24112918Sjeff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25112918Sjeff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26112918Sjeff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27112918Sjeff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28112918Sjeff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29112918Sjeff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30112918Sjeff * SUCH DAMAGE. 31112918Sjeff * 32112918Sjeff * $FreeBSD$ 33112918Sjeff */ 34144518Sdavidxu 35157457Sdavidxu#include "namespace.h" 36157457Sdavidxu#include <sys/param.h> 37112918Sjeff#include <errno.h> 38112918Sjeff#include <pthread.h> 39157457Sdavidxu#include "un-namespace.h" 40144518Sdavidxu 41112918Sjeff#include "thr_private.h" 42112918Sjeff 43112918Sjeff__weak_reference(_pthread_setschedparam, pthread_setschedparam); 44112918Sjeff 45157194Sdavidxu/* 46157194Sdavidxu * Set a thread's scheduling parameters, this should be done 47157194Sdavidxu * in kernel, doing it in userland is no-op. 48157194Sdavidxu */ 49112918Sjeffint 50112918Sjeff_pthread_setschedparam(pthread_t pthread, int policy, 51112918Sjeff const struct sched_param *param) 52112918Sjeff{ 53160287Sdavidxu struct pthread *curthread = _get_curthread(); 54160287Sdavidxu int ret; 55112918Sjeff 56238642Sdavidxu if (pthread == curthread) 57160287Sdavidxu THR_LOCK(curthread); 58238642Sdavidxu else if ((ret = _thr_find_thread(curthread, pthread, 59238640Sdavidxu /*include dead*/0)) != 0) 60238640Sdavidxu return (ret); 61238640Sdavidxu if (pthread->attr.sched_policy == policy && 62238640Sdavidxu (policy == SCHED_OTHER || 63238640Sdavidxu pthread->attr.prio == param->sched_priority)) { 64238640Sdavidxu pthread->attr.prio = param->sched_priority; 65160287Sdavidxu THR_THREAD_UNLOCK(curthread, pthread); 66238640Sdavidxu return (0); 67112918Sjeff } 68238640Sdavidxu ret = _thr_setscheduler(pthread->tid, policy, param); 69238640Sdavidxu if (ret == -1) 70238640Sdavidxu ret = errno; 71238640Sdavidxu else { 72238640Sdavidxu pthread->attr.sched_policy = policy; 73238640Sdavidxu pthread->attr.prio = param->sched_priority; 74238640Sdavidxu } 75238640Sdavidxu THR_THREAD_UNLOCK(curthread, pthread); 76144518Sdavidxu return (ret); 77112918Sjeff} 78