mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 15:20:10 +00:00
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/* Get current priority ceiling of pthread_mutex_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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <pthreadP.h>
|
|
|
|
|
|
int
|
|
pthread_mutex_getprioceiling (mutex, prioceiling)
|
|
const pthread_mutex_t *mutex;
|
|
int *prioceiling;
|
|
{
|
|
if (__builtin_expect ((mutex->__data.__kind
|
|
& PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0, 0))
|
|
return EINVAL;
|
|
|
|
*prioceiling = (mutex->__data.__lock & PTHREAD_MUTEX_PRIO_CEILING_MASK)
|
|
>> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
|
|
|
|
return 0;
|
|
}
|