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- /* Get priority ceiling setting from pthread_mutexattr_t.
- Copyright (C) 2006 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
- 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 <pthreadP.h>
- int
- pthread_mutexattr_getprioceiling (
- const pthread_mutexattr_t *attr,
- int *prioceiling)
- {
- const struct pthread_mutexattr *iattr;
- int ceiling;
- iattr = (const struct pthread_mutexattr *) attr;
- ceiling = ((iattr->mutexkind & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
- >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT);
- if (! ceiling)
- {
- if (__sched_fifo_min_prio == -1)
- __init_sched_fifo_prio ();
- if (ceiling < __sched_fifo_min_prio)
- ceiling = __sched_fifo_min_prio;
- }
- *prioceiling = ceiling;
- return 0;
- }
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