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6d52618b | 1 | /* Implementation of the BSD usleep function using nanosleep. |
b168057a | 2 | Copyright (C) 1996-2015 Free Software Foundation, Inc. |
6d52618b UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
6d52618b UD |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
6d52618b | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
6d52618b UD |
19 | |
20 | #include <time.h> | |
21 | #include <unistd.h> | |
22 | ||
7287c36d | 23 | int |
5a05b367 | 24 | usleep (useconds_t useconds) |
6d52618b | 25 | { |
0274d73c RM |
26 | struct timespec ts = { .tv_sec = (long int) (useconds / 1000000), |
27 | .tv_nsec = (long int) (useconds % 1000000) * 1000ul }; | |
6d52618b | 28 | |
7a114794 UD |
29 | /* Note the usleep() is a cancellation point. But since we call |
30 | nanosleep() which itself is a cancellation point we do not have | |
31 | to do anything here. */ | |
7287c36d | 32 | return __nanosleep (&ts, NULL); |
6d52618b | 33 | } |