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/* Test of sleep() function.
Copyright (C) 2007-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <unistd.h>
#include "signature.h"
SIGNATURE_CHECK (sleep, unsigned int, (unsigned int));
#include <signal.h>
#include "macros.h"
#if HAVE_DECL_ALARM
static void
handle_alarm (int sig)
{
if (sig != SIGALRM)
_exit (1);
}
#endif
int
main (void)
{
ASSERT (sleep (1) <= 1);
ASSERT (sleep (0) == 0);
#if HAVE_DECL_ALARM
{
const unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days. */
unsigned int remaining;
signal (SIGALRM, handle_alarm);
alarm (1);
remaining = sleep (pentecost);
ASSERT (pentecost - 10 < remaining && remaining <= pentecost);
}
#endif
return 0;
}
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