From 5e2aa9a421cd429e9ef7d169eda7c18a119e9b8c Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Wed, 20 May 2015 14:18:21 -0700 Subject: Move usleep.c using nanosleep to sysdeps/posix. --- sysdeps/posix/usleep.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 sysdeps/posix/usleep.c (limited to 'sysdeps/posix') diff --git a/sysdeps/posix/usleep.c b/sysdeps/posix/usleep.c new file mode 100644 index 0000000000..841f1fa1b1 --- /dev/null +++ b/sysdeps/posix/usleep.c @@ -0,0 +1,33 @@ +/* Implementation of the BSD usleep function using nanosleep. + Copyright (C) 1996-2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 1996. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include + +int +usleep (useconds_t useconds) +{ + struct timespec ts = { .tv_sec = (long int) (useconds / 1000000), + .tv_nsec = (long int) (useconds % 1000000) * 1000ul }; + + /* Note the usleep() is a cancellation point. But since we call + nanosleep() which itself is a cancellation point we do not have + to do anything here. */ + return __nanosleep (&ts, NULL); +} -- cgit v1.2.3-70-g09d2