glibc/nptl/pthread_mutex_consistent.c

37 lines
1.3 KiB
C

/* Copyright (C) 2005, 2006, 2010 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 (mutex)
pthread_mutex_t *mutex;
{
/* Test whether this is a robust mutex with a dead owner. */
if ((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)