1 | /* Initialize a rwlock. Generic version. |
2 | Copyright (C) 2002-2024 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 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <pthread.h> |
20 | #include <string.h> |
21 | #include <pt-internal.h> |
22 | |
23 | int |
24 | _pthread_rwlock_init (pthread_rwlock_t *rwlock, |
25 | const pthread_rwlockattr_t *attr) |
26 | { |
27 | ASSERT_TYPE_SIZE (pthread_rwlock_t, __SIZEOF_PTHREAD_RWLOCK_T); |
28 | |
29 | *rwlock = (pthread_rwlock_t) __PTHREAD_RWLOCK_INITIALIZER; |
30 | |
31 | if (attr == NULL |
32 | || memcmp (attr, &__pthread_default_rwlockattr, sizeof (*attr)) == 0) |
33 | /* Use the default attributes. */ |
34 | return 0; |
35 | |
36 | /* Non-default attributes. */ |
37 | |
38 | rwlock->__attr = malloc (sizeof *attr); |
39 | if (rwlock->__attr == NULL) |
40 | return ENOMEM; |
41 | |
42 | *rwlock->__attr = *attr; |
43 | return 0; |
44 | } |
45 | |
46 | strong_alias (_pthread_rwlock_init, pthread_rwlock_init); |
47 | |