/* Change priority ceiling setting in 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 <errno.h> #include <pthreadP.h> int pthread_mutexattr_setprioceiling ( pthread_mutexattr_t *attr, int prioceiling) { if (__sched_fifo_min_prio == -1) __init_sched_fifo_prio (); if (__builtin_expect (prioceiling < __sched_fifo_min_prio, 0) || __builtin_expect (prioceiling > __sched_fifo_max_prio, 0) || __builtin_expect ((prioceiling & (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT)) != prioceiling, 0)) return EINVAL; struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr; iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PRIO_CEILING_MASK) | (prioceiling << PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT)); return 0; }