1 /* 2 * sched_getschedparam.c 3 * 4 * Description: 5 * POSIX thread functions that deal with thread scheduling. 6 * 7 * -------------------------------------------------------------------------- 8 * 9 * Pthreads-win32 - POSIX Threads Library for Win32 10 * Copyright(C) 1998 John E. Bossom 11 * Copyright(C) 1999,2005 Pthreads-win32 contributors 12 * 13 * Contact Email: rpj (at) callisto.canberra.edu.au 14 * 15 * The current list of contributors is contained 16 * in the file CONTRIBUTORS included with the source 17 * code distribution. The list can also be seen at the 18 * following World Wide Web location: 19 * http://sources.redhat.com/pthreads-win32/contributors.html 20 * 21 * This library is free software; you can redistribute it and/or 22 * modify it under the terms of the GNU Lesser General Public 23 * License as published by the Free Software Foundation; either 24 * version 2 of the License, or (at your option) any later version. 25 * 26 * This library is distributed in the hope that it will be useful, 27 * but WITHOUT ANY WARRANTY; without even the implied warranty of 28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 29 * Lesser General Public License for more details. 30 * 31 * You should have received a copy of the GNU Lesser General Public 32 * License along with this library in the file COPYING.LIB; 33 * if not, write to the Free Software Foundation, Inc., 34 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 35 */ 36 37 #include "pthread.h" 38 #include "implement.h" 39 #include "sched.h" 40 41 int 42 pthread_getschedparam (pthread_t thread, int *policy, 43 struct sched_param *param) 44 { 45 int result; 46 47 /* Validate the thread id. */ 48 result = pthread_kill (thread, 0); 49 if (0 != result) 50 { 51 return result; 52 } 53 54 /* 55 * Validate the policy and param args. 56 * Check that a policy constant wasn't passed rather than &policy. 57 */ 58 if (policy <= (int *) SCHED_MAX || param == NULL) 59 { 60 return EINVAL; 61 } 62 63 /* Fill out the policy. */ 64 *policy = SCHED_OTHER; 65 66 /* 67 * This function must return the priority value set by 68 * the most recent pthread_setschedparam() or pthread_create() 69 * for the target thread. It must not return the actual thread 70 * priority as altered by any system priority adjustments etc. 71 */ 72 param->sched_priority = ((ptw32_thread_t *)thread.p)->sched_priority; 73 74 return 0; 75 } 76
