1/* sem_timedwait -- wait on a semaphore with timeout.
2 Copyright (C) 2003-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <time.h>
21#include "semaphoreP.h"
22#include "sem_waitcommon.c"
23
24/* This is in a separate file because because sem_timedwait is only provided
25 if __USE_XOPEN2K is defined. */
26int
27___sem_timedwait64 (sem_t *sem, const struct __timespec64 *abstime)
28{
29 if (! valid_nanoseconds (abstime->tv_nsec))
30 {
31 __set_errno (EINVAL);
32 return -1;
33 }
34
35 /* Check sem_wait.c for a more detailed explanation why it is required. */
36 __pthread_testcancel ();
37
38 if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
39 return 0;
40 else
41 return __new_sem_wait_slow64 ((struct new_sem *) sem,
42 CLOCK_REALTIME, abstime);
43}
44
45#if __TIMESIZE == 64
46strong_alias (___sem_timedwait64, ___sem_timedwait)
47#else /* __TIMESPEC64 != 64 */
48strong_alias (___sem_timedwait64, __sem_timedwait64)
49libc_hidden_def (__sem_timedwait64)
50
51int
52___sem_timedwait (sem_t *sem, const struct timespec *abstime)
53{
54 struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);
55
56 return __sem_timedwait64 (sem, &ts64);
57}
58#endif /* __TIMESPEC64 != 64 */
59versioned_symbol (libc, ___sem_timedwait, sem_timedwait, GLIBC_2_34);
60#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
61compat_symbol (libpthread, ___sem_timedwait, sem_timedwait, GLIBC_2_2);
62#endif
63