| /* Copyright (C) 2002-2014 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 |
| __pthread_getschedparam (threadid, policy, param) |
| 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 an 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) |
