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/* Copyright (C) 2003-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
/* Test that nanosleep() does sleep. */
static int
do_test (void)
{
/* Current time. */
struct timeval tv1;
(void) gettimeofday (&tv1, NULL);
struct timespec ts;
ts.tv_sec = 1;
ts.tv_nsec = 0;
TEMP_FAILURE_RETRY (nanosleep (&ts, &ts));
/* At least one second must have passed. */
struct timeval tv2;
(void) gettimeofday (&tv2, NULL);
tv2.tv_sec -= tv1.tv_sec;
tv2.tv_usec -= tv1.tv_usec;
if (tv2.tv_usec < 0)
--tv2.tv_sec;
if (tv2.tv_sec < 1)
{
puts ("nanosleep didn't sleep long enough");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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