1/* Copyright (C) 2005-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.
4
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.
9
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.
14
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/>. */
18
19#include <errno.h>
20#include <pthreadP.h>
21
22
23int
24pthread_mutexattr_setrobust (pthread_mutexattr_t *attr, int robustness)
25{
26 if (robustness != PTHREAD_MUTEX_STALLED_NP
27 && __builtin_expect (robustness != PTHREAD_MUTEX_ROBUST_NP, 0))
28 return EINVAL;
29
30 struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
31
32 /* We use bit 30 to signal whether the mutex is going to be
33 robust or not. */
34 if (robustness == PTHREAD_MUTEX_STALLED_NP)
35 iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_ROBUST;
36 else
37 iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_ROBUST;
38
39 return 0;
40}
41weak_alias (pthread_mutexattr_setrobust, pthread_mutexattr_setrobust_np)
42