1 /* Acquire a rwlock for reading. Generic version.
2 Copyright (C) 2002-2022 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 <pt-internal.h>
21
22 /* Implemented in pt-rwlock-timedrdlock.c. */
23 extern int __pthread_rwlock_timedrdlock_internal (struct __pthread_rwlock
24 *rwlock,
25 clockid_t clockid,
26 const struct timespec
27 *abstime);
28
29 /* Acquire RWLOCK for reading, block if we can't get it. */
30 int
__pthread_rwlock_rdlock(struct __pthread_rwlock * rwlock)31 __pthread_rwlock_rdlock (struct __pthread_rwlock *rwlock)
32 {
33 return __pthread_rwlock_timedrdlock_internal (rwlock, -1, 0);
34 }
35 weak_alias (__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
36