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sortix--sortix/libc/unistd/sleep.cpp
2013-12-17 14:30:38 +01:00

36 lines
1.3 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix 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 3 of the License, or (at your
option) any later version.
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
unistd/sleep.cpp
Blocks the current thread for for at least N seconds.
*******************************************************************************/
#include <time.h>
#include <timespec.h>
#include <unistd.h>
extern "C" unsigned sleep(unsigned secs)
{
struct timespec delay = timespec_make(secs, 0);
struct timespec left;
if ( nanosleep(&delay, &left) < 0 )
return left.tv_sec + (left.tv_nsec ? 1 : 0);
return 0;
}