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/* Copyright (C) 2003-2022 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>
#include <intprops.h>
#include <support/support.h>
#include <support/check.h>
/* Test that clock_nanosleep() does sleep. */
static void
clock_nanosleep_test (void)
{
/* Current time. */
struct timeval tv1;
gettimeofday (&tv1, NULL);
struct timespec ts = { 1, 0 };
TEMP_FAILURE_RETRY (clock_nanosleep (CLOCK_REALTIME, 0, &ts, &ts));
/* At least one second must have passed. */
struct timeval tv2;
gettimeofday (&tv2, NULL);
tv2.tv_sec -= tv1.tv_sec;
tv2.tv_usec -= tv1.tv_usec;
if (tv2.tv_usec < 0)
--tv2.tv_sec;
TEST_VERIFY (tv2.tv_sec >= 1);
}
static void
clock_nanosleep_large_timeout (void)
{
support_create_timer (0, 100000000, false, NULL);
struct timespec ts = { TYPE_MAXIMUM (time_t), 0 };
int r = clock_nanosleep (CLOCK_REALTIME, 0, &ts, NULL);
TEST_VERIFY (r == EINTR || r == EOVERFLOW);
}
static int
do_test (void)
{
clock_nanosleep_test ();
clock_nanosleep_large_timeout ();
return 0;
}
#include <support/test-driver.c>
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