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1/* Initialize a rwlock. Generic version.
2 Copyright (C) 2002-2019 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 <pt-internal.h>
22
23int
24_pthread_rwlock_init (pthread_rwlock_t *rwlock,
25 const pthread_rwlockattr_t *attr)
26{
27 *rwlock = (pthread_rwlock_t) __PTHREAD_RWLOCK_INITIALIZER;
28
29 if (attr == NULL
30 || memcmp (attr, &__pthread_default_rwlockattr, sizeof (*attr)) == 0)
31 /* Use the default attributes. */
32 return 0;
33
34 /* Non-default attributes. */
35
36 rwlock->__attr = malloc (sizeof *attr);
37 if (rwlock->__attr == NULL)
38 return ENOMEM;
39
40 *rwlock->__attr = *attr;
41 return 0;
42}
43
44strong_alias (_pthread_rwlock_init, pthread_rwlock_init);
45

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