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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 <string.h>
- #include "pthreadP.h"
- #include <lowlevellock.h>
- int
- attribute_protected
- __pthread_getschedparam (
- pthread_t threadid,
- int *policy,
- 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);
- /* The library is responsible for maintaining the values at all
- times. If the user uses a interface other than
- pthread_setschedparam to modify the scheduler setting it is not
- the library's problem. In case the descriptor's values have
- not yet been retrieved do it now. */
- if ((pd->flags & ATTR_FLAG_SCHED_SET) == 0)
- {
- if (sched_getparam (pd->tid, &pd->schedparam) != 0)
- result = 1;
- else
- pd->flags |= ATTR_FLAG_SCHED_SET;
- }
- if ((pd->flags & ATTR_FLAG_POLICY_SET) == 0)
- {
- pd->schedpolicy = sched_getscheduler (pd->tid);
- if (pd->schedpolicy == -1)
- result = 1;
- else
- pd->flags |= ATTR_FLAG_POLICY_SET;
- }
- if (result == 0)
- {
- *policy = pd->schedpolicy;
- memcpy (param, &pd->schedparam, sizeof (struct sched_param));
- }
- lll_unlock (pd->lock, LLL_PRIVATE);
- return result;
- }
- strong_alias (__pthread_getschedparam, pthread_getschedparam)
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