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- /* Copyright (C) 2002, 2003, 2004, 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, see
- <http://www.gnu.org/licenses/>. */
- #include <errno.h>
- #include <sched.h>
- #include <string.h>
- #include <sched.h>
- #include "pthreadP.h"
- #include <lowlevellock.h>
- int
- pthread_setschedprio (
- pthread_t threadid,
- int prio)
- {
- 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;
- struct sched_param param;
- param.sched_priority = prio;
- lll_lock (pd->lock, LLL_PRIVATE);
- /* 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 > prio)
- param.sched_priority = pd->tpp->priomax;
- /* Try to set the scheduler information. */
- if (__builtin_expect (sched_setparam (pd->tid, ¶m) == -1, 0))
- result = errno;
- else
- {
- /* We succeeded changing the kernel information. Reflect this
- change in the thread descriptor. */
- param.sched_priority = prio;
- memcpy (&pd->schedparam, ¶m, sizeof (struct sched_param));
- pd->flags |= ATTR_FLAG_SCHED_SET;
- }
- lll_unlock (pd->lock, LLL_PRIVATE);
- return result;
- }
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