39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/* Copyright (C) 2005-2018 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.
|
|
|
|
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_mutex_consistent (pthread_mutex_t *mutex)
|
|
{
|
|
/* Test whether this is a robust mutex with a dead owner.
|
|
See concurrency notes regarding __kind in struct __pthread_mutex_s
|
|
in sysdeps/nptl/bits/thread-shared-types.h. */
|
|
if ((atomic_load_relaxed (&(mutex->__data.__kind))
|
|
& PTHREAD_MUTEX_ROBUST_NORMAL_NP) == 0
|
|
|| mutex->__data.__owner != PTHREAD_MUTEX_INCONSISTENT)
|
|
return EINVAL;
|
|
|
|
mutex->__data.__owner = THREAD_GETMEM (THREAD_SELF, tid);
|
|
|
|
return 0;
|
|
}
|
|
weak_alias (pthread_mutex_consistent, pthread_mutex_consistent_np)
|