1 /* Get current priority ceiling of pthread_mutex_t.
2 Copyright (C) 2006-2013 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
25 pthread_mutex_getprioceiling (mutex, prioceiling)
26 const pthread_mutex_t *mutex;
29 if (__builtin_expect ((mutex->__data.__kind
30 & PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0, 0))
33 *prioceiling = (mutex->__data.__lock & PTHREAD_MUTEX_PRIO_CEILING_MASK)
34 >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;