1 /* 2 * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 19 * 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 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 #include "namespace.h" 36 #include <sys/types.h> 37 #include <sys/rtprio.h> 38 #include <errno.h> 39 #include <pthread.h> 40 #include "un-namespace.h" 41 42 #include "thr_private.h" 43 44 __weak_reference(_pthread_getschedparam, pthread_getschedparam); 45 46 int 47 _pthread_getschedparam(pthread_t pthread, int *policy, 48 struct sched_param *param) 49 { 50 struct pthread *curthread = _get_curthread(); 51 int ret; 52 53 if (policy == NULL || param == NULL) 54 return (EINVAL); 55 56 if (pthread == curthread) { 57 /* 58 * Avoid searching the thread list when it is the current 59 * thread. 60 */ 61 THR_LOCK(curthread); 62 *policy = curthread->attr.sched_policy; 63 param->sched_priority = curthread->attr.prio; 64 THR_UNLOCK(curthread); 65 ret = 0; 66 } 67 /* Find the thread in the list of active threads. */ 68 else if ((ret = _thr_ref_add(curthread, pthread, /*include dead*/0)) 69 == 0) { 70 THR_THREAD_LOCK(curthread, pthread); 71 *policy = pthread->attr.sched_policy; 72 param->sched_priority = pthread->attr.prio; 73 THR_THREAD_UNLOCK(curthread, pthread); 74 _thr_ref_delete(curthread, pthread); 75 } 76 return (ret); 77 } 78