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1/* Initialize a mutex. Generic version.
2 Copyright (C) 2000-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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 <http://www.gnu.org/licenses/>. */
18
19#include <pthread.h>
20#include <string.h>
21#include <stdlib.h>
22#include <assert.h>
23
24#include <pt-internal.h>
25
26int
27_pthread_mutex_init (pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
28{
29 *mutex = (pthread_mutex_t) __PTHREAD_MUTEX_INITIALIZER;
30
31 if (attr == NULL
32 || memcmp (attr, &__pthread_default_mutexattr, sizeof (*attr)) == 0)
33 /* The default attributes. */
34 return 0;
35
36 if (mutex->__attr == NULL
37 || mutex->__attr == __PTHREAD_ERRORCHECK_MUTEXATTR
38 || mutex->__attr == __PTHREAD_RECURSIVE_MUTEXATTR)
39 mutex->__attr = malloc (sizeof *attr);
40
41 if (mutex->__attr == NULL)
42 return ENOMEM;
43
44 *mutex->__attr = *attr;
45 return 0;
46}
47
48strong_alias (_pthread_mutex_init, pthread_mutex_init);
49

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