1/* Copyright (C) 2003-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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_rwlock_common.c"
20
21/* See pthread_rwlock_common.c. */
22int
23pthread_rwlock_timedrdlock (pthread_rwlock_t *rwlock,
24 const struct timespec *abstime)
25{
26 /* Make sure the passed in timeout value is valid. Note that the previous
27 implementation assumed that this check *must* not be performed if there
28 would in fact be no blocking; however, POSIX only requires that "the
29 validity of the abstime parameter need not be checked if the lock can be
30 immediately acquired" (i.e., we need not but may check it). */
31 /* ??? Just move this to __pthread_rwlock_rdlock_full? */
32 if (__glibc_unlikely (abstime->tv_nsec >= 1000000000
33 || abstime->tv_nsec < 0))
34 return EINVAL;
35
36 return __pthread_rwlock_rdlock_full (rwlock, abstime);
37}
38