1 /* pthread_mutex_consistent. Hurd version.
2 Copyright (C) 2016-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
22 #include <pt-internal.h>
27 pthread_mutex_consistent (pthread_mutex_t
*mtxp
)
30 unsigned int val
= mtxp
->__lock
;
32 if ((mtxp
->__flags
& PTHREAD_MUTEX_ROBUST
) != 0
33 && (val
& LLL_DEAD_OWNER
) != 0
34 && atomic_compare_and_exchange_bool_acq (&mtxp
->__lock
,
35 __getpid () | LLL_WAITERS
,
38 /* The mutex is now ours, and it's consistent. */
39 mtxp
->__owner_id
= _pthread_self ()->thread
;
47 weak_alias (pthread_mutex_consistent
, pthread_mutex_consistent_np
)