/* Copyright (C) 2003-2018 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

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <stdio.h>

#include <unistd.h>

#include <sys/time.h>

#include <time.h>

/* Test that clock_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 (clock_nanosleep (CLOCK_REALTIME, 0, &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 ("clock_nanosleep didn't sleep long enough");

      return 1;

    }

  return 0;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"