thr_setprio.c revision 160321
158310Sache/* 258310Sache * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 358310Sache * All rights reserved. 458310Sache * 558310Sache * Redistribution and use in source and binary forms, with or without 658310Sache * modification, are permitted provided that the following conditions 758310Sache * are met: 858310Sache * 1. Redistributions of source code must retain the above copyright 958310Sache * notice, this list of conditions and the following disclaimer. 1058310Sache * 2. Redistributions in binary form must reproduce the above copyright 1158310Sache * notice, this list of conditions and the following disclaimer in the 1258310Sache * documentation and/or other materials provided with the distribution. 1358310Sache * 3. All advertising materials mentioning features or use of this software 1458310Sache * must display the following acknowledgement: 1558310Sache * This product includes software developed by John Birrell. 1658310Sache * 4. Neither the name of the author nor the names of any co-contributors 1758310Sache * may be used to endorse or promote products derived from this software 1858310Sache * without specific prior written permission. 1958310Sache * 2058310Sache * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 2158310Sache * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2258310Sache * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2358310Sache * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2458310Sache * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2558310Sache * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2658310Sache * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2758310Sache * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2858310Sache * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2958310Sache * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3058310Sache * SUCH DAMAGE. 3158310Sache * 3258310Sache * $FreeBSD: head/lib/libthr/thread/thr_setprio.c 160321 2006-07-13 06:35:43Z davidxu $ 3358310Sache */ 3458310Sache 3558310Sache#include "namespace.h" 3658310Sache#include <pthread.h> 3758310Sache#include "un-namespace.h" 3858310Sache 3958310Sache#include "thr_private.h" 4058310Sache 4158310Sache__weak_reference(_pthread_setprio, pthread_setprio); 42119610Sache 43119610Sacheint 44119610Sache_pthread_setprio(pthread_t pthread, int prio) 4558310Sache{ 4658310Sache struct pthread *curthread = _get_curthread(); 47 struct sched_param param; 48 int ret; 49 50 param.sched_priority = prio; 51 if (pthread == curthread) { 52 THR_LOCK(curthread); 53 ret = thr_setschedparam(curthread->tid, ¶m, sizeof(param)); 54 if (ret == -1) 55 ret = errno; 56 else 57 curthread->attr.prio = prio; 58 THR_UNLOCK(curthread); 59 } else if ((ret = _thr_ref_add(curthread, pthread, /*include dead*/0)) 60 == 0) { 61 THR_THREAD_LOCK(curthread, pthread); 62 ret = thr_setschedparam(pthread->tid, ¶m, sizeof(param)); 63 if (ret == -1) 64 ret = errno; 65 else 66 pthread->attr.prio = prio; 67 THR_THREAD_UNLOCK(curthread, pthread); 68 _thr_ref_delete(curthread, pthread); 69 } 70 return (ret); 71} 72