/* Copyright (C) 2004-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.

   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 <pthread.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <sys/time.h>

static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

static pthread_mutex_t mut = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;

static pthread_mutex_t mut2 = PTHREAD_MUTEX_INITIALIZER;

static void *

tf (void *p)

{

  if (pthread_mutex_lock (&mut) != 0)

    {

      printf ("%s: 1st mutex_lock failed\n", __func__);

      exit (1);

    }

  if (pthread_mutex_lock (&mut) != 0)

    {

      printf ("%s: 2nd mutex_lock failed\n", __func__);

      exit (1);

    }

  if (pthread_mutex_lock (&mut) != 0)

    {

      printf ("%s: 3rd mutex_lock failed\n", __func__);

      exit (1);

    }

  if (pthread_mutex_unlock (&mut2) != 0)

    {

      printf ("%s: mutex_unlock failed\n", __func__);

      exit (1);

    }

  struct timeval tv;

  gettimeofday (&tv, NULL);

  struct timespec ts;

  TIMEVAL_TO_TIMESPEC (&tv, &ts);

  ts.tv_sec += p == NULL ? 100 : 1;

  int err = pthread_cond_timedwait (&cond, &mut, &ts);

  if ((err != 0 && p == NULL) || (err != ETIMEDOUT && p != NULL))

    {

      printf ("%s: cond_wait failed\n", __func__);

      exit (1);

    }

  if (pthread_mutex_unlock (&mut) != 0)

    {

      printf ("%s: 1st mutex_unlock failed\n", __func__);

      exit (1);

    }

  if (pthread_mutex_unlock (&mut) != 0)

    {

      printf ("%s: 2nd mutex_unlock failed\n", __func__);

      exit (1);

    }

  if (pthread_mutex_unlock (&mut) != 0)

    {

      printf ("%s: 3rd mutex_unlock failed\n", __func__);

      exit (1);

    }

  puts ("child: done");

  return NULL;

}

static int

do_test (void)

{

  if (pthread_mutex_lock (&mut2) != 0)

    {

      puts ("1st mutex_lock failed");

      return 1;

    }

  puts ("parent: create 1st child");

  pthread_t th;

  int err = pthread_create (&th, NULL, tf, NULL);

  if (err != 0)

    {

      printf ("parent: cannot 1st create thread: %s\n", strerror (err));

      return 1;

    }

  /* We have to synchronize with the child.  */

  if (pthread_mutex_lock (&mut2) != 0)

    {

      puts ("2nd mutex_lock failed");

      return 1;

    }

  /* Give the child to reach to pthread_cond_wait.  */

  sleep (1);

  if (pthread_cond_signal (&cond) != 0)

    {

      puts ("cond_signal failed");

      return 1;

    }

  err = pthread_join (th, NULL);

  if (err != 0)

    {

      printf ("parent: failed to join: %s\n", strerror (err));

      return 1;

    }

  puts ("parent: create 2nd child");

  err = pthread_create (&th, NULL, tf, (void *) 1l);

  if (err != 0)

    {

      printf ("parent: cannot 2nd create thread: %s\n", strerror (err));

      return 1;

    }

  err = pthread_join (th, NULL);

  if (err != 0)

    {

      printf ("parent: failed to join: %s\n", strerror (err));

      return 1;

    }

  puts ("done");

  return 0;

}

#define TEST_FUNCTION do_test ()

#define TIMEOUT 6

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