1/* sem_clockwait -- wait on a semaphore with timeout using the specified
2 clock.
3
4 Copyright (C) 2019-2020 Free Software Foundation, Inc.
5 This file is part of the GNU C Library.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <https://www.gnu.org/licenses/>. */
20
21#include <time.h>
22#include "sem_waitcommon.c"
23
24int
25sem_clockwait (sem_t *sem, clockid_t clockid,
26 const struct timespec *abstime)
27{
28 /* Check that supplied clockid is one we support, even if we don't end up
29 waiting. */
30 if (!futex_abstimed_supported_clockid (clockid))
31 {
32 __set_errno (EINVAL);
33 return -1;
34 }
35
36 if (! valid_nanoseconds (abstime->tv_nsec))
37 {
38 __set_errno (EINVAL);
39 return -1;
40 }
41
42 if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
43 return 0;
44 else
45 return __new_sem_wait_slow ((struct new_sem *) sem, clockid, abstime);
46}
47