| /* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <sched.h> |
| #include <string.h> |
| #include "pthreadP.h" |
| #include <lowlevellock.h> |
| |
| |
| int |
| __pthread_setschedparam (threadid, policy, param) |
| pthread_t threadid; |
| int policy; |
| const struct sched_param *param; |
| { |
| struct pthread *pd = (struct pthread *) threadid; |
| |
| /* Make sure the descriptor is valid. */ |
| if (INVALID_TD_P (pd)) |
| /* Not a valid thread handle. */ |
| return ESRCH; |
| |
| int result = 0; |
| |
| lll_lock (pd->lock, LLL_PRIVATE); |
| |
| struct sched_param p; |
| const struct sched_param *orig_param = param; |
| |
| /* If the thread should have higher priority because of some |
| PTHREAD_PRIO_PROTECT mutexes it holds, adjust the priority. */ |
| if (__builtin_expect (pd->tpp != NULL, 0) |
| && pd->tpp->priomax > param->sched_priority) |
| { |
| p = *param; |
| p.sched_priority = pd->tpp->priomax; |
| param = &p; |
| } |
| |
| /* Try to set the scheduler information. */ |
| if (__builtin_expect (__sched_setscheduler (pd->tid, policy, |
| param) == -1, 0)) |
| result = errno; |
| else |
| { |
| /* We succeeded changing the kernel information. Reflect this |
| change in the thread descriptor. */ |
| pd->schedpolicy = policy; |
| memcpy (&pd->schedparam, orig_param, sizeof (struct sched_param)); |
| pd->flags |= ATTR_FLAG_SCHED_SET | ATTR_FLAG_POLICY_SET; |
| } |
| |
| lll_unlock (pd->lock, LLL_PRIVATE); |
| |
| return result; |
| } |
| strong_alias (__pthread_setschedparam, pthread_setschedparam) |