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sortix--sortix/libc/alarm.cpp

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2013-05-11 19:24:42 -04:00
/*******************************************************************************
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/>.
alarm.cpp
Set an alarm clock for delivery of a signal.
*******************************************************************************/
#include <timespec.h>
#include <unistd.h>
extern "C" unsigned int alarm(unsigned int seconds)
{
struct timespec delay = timespec_make(seconds, 0);
struct timespec odelay;
if ( alarmns(&delay, &odelay) < 0 )
return 0;
return odelay.tv_sec + (odelay.tv_nsec ? 1 : 0);
}