1 /* High-resolution sleep.
2 Copyright (C) 2020-2021 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 <time.h>
20 #include <errno.h>
21
22 int
__nanosleep64(const struct __timespec64 * req,struct __timespec64 * rem)23 __nanosleep64 (const struct __timespec64 *req, struct __timespec64 *rem)
24 {
25 int ret = __clock_nanosleep_time64 (CLOCK_REALTIME, 0, req, rem);
26 if (ret != 0)
27 {
28 __set_errno (ret);
29 return -1;
30 }
31 return 0;
32 }
33 #if __TIMESIZE != 64
libc_hidden_def(__nanosleep64)34 libc_hidden_def (__nanosleep64)
35
36 int
37 __nanosleep (const struct timespec *req, struct timespec *rem)
38 {
39 struct __timespec64 treq64, trem64;
40
41 treq64 = valid_timespec_to_timespec64 (*req);
42 int ret = __nanosleep64 (&treq64, rem != NULL ? &trem64 : NULL);
43
44 if (ret != 0 && errno == EINTR && rem != NULL)
45 *rem = valid_timespec64_to_timespec (trem64);
46 return ret;
47 }
48 #endif
49 libc_hidden_def (__nanosleep)
50 weak_alias (__nanosleep, nanosleep)
51