aboutsummaryrefslogtreecommitdiff
path: root/nptl/pthread_mutex_consistent.c
blob: 944ab2a776c7ab55540781652356e9268239591b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
/* Copyright (C) 2005-2016 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.  */
  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)