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

   This file is part of the GNU C Library.

   Contributed by Jakub Jelinek <jakub@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 <pthread.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#define N 10

#define ROUNDS 1000

static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

static pthread_cond_t cond2 = PTHREAD_COND_INITIALIZER;

static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;

static pthread_barrier_t b;

static int count;

static void *

tf (void *p)

{

  int i;

  for (i = 0; i < ROUNDS; ++i)

    {

      pthread_mutex_lock (&mut;;

      if (++count == N)

	pthread_cond_signal (&cond2);

#ifdef TIMED

      struct timeval tv;

      gettimeofday (&tv, NULL);

      struct timespec ts;

      /* Wait three seconds.  */

      ts.tv_sec = tv.tv_sec + 3;

      ts.tv_nsec = tv.tv_usec * 1000;

      pthread_cond_timedwait (&cond, &mut, &ts);

#else

      pthread_cond_wait (&cond, &mut;;

#endif

      pthread_mutex_unlock (&mut;;

      int err = pthread_barrier_wait (&b);

      if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)

	{

	  puts ("child: barrier_wait failed");

	  exit (1);

	}

      err = pthread_barrier_wait (&b);

      if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)

	{

	  puts ("child: barrier_wait failed");

	  exit (1);

	}

    }

  return NULL;

}

static int

do_test (void)

{

  if (pthread_barrier_init (&b, NULL, N + 1) != 0)

    {

      puts ("barrier_init failed");

      return 1;

    }

  pthread_mutex_lock (&mut;;

  int i, j, err;

  pthread_t th[N];

  for (i = 0; i < N; ++i)

    if ((err = pthread_create (&th[i], NULL, tf, NULL)) != 0)

      {

	printf ("cannot create thread %d: %s\n", i, strerror (err));

	return 1;

      }

  for (i = 0; i < ROUNDS; ++i)

    {

      /* Make sure we discard spurious wake-ups.  */

      do

	pthread_cond_wait (&cond2, &mut;;

      while (count != N);

      if (i & 1)

        pthread_mutex_unlock (&mut;;

      if (i & 2)

	pthread_cond_broadcast (&cond;;

      else if (i & 4)

	for (j = 0; j < N; ++j)

	  pthread_cond_signal (&cond;;

      else

	{

	  for (j = 0; j < (i / 8) % N; ++j)

	    pthread_cond_signal (&cond;;

	  pthread_cond_broadcast (&cond;;

	}

      if ((i & 1) == 0)

        pthread_mutex_unlock (&mut;;

      err = pthread_cond_destroy (&cond;;

      if (err)

	{

	  printf ("pthread_cond_destroy failed: %s\n", strerror (err));

	  return 1;

	}

      /* Now clobber the cond variable which has been successfully

         destroyed above.  */

      memset (&cond, (char) i, sizeof (cond));

      err = pthread_barrier_wait (&b);

      if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)

	{

	  puts ("parent: barrier_wait failed");

	  return 1;

	}

      pthread_mutex_lock (&mut;;

      err = pthread_barrier_wait (&b);

      if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)

	{

	  puts ("parent: barrier_wait failed");

	  return 1;

	}

      count = 0;

      err = pthread_cond_init (&cond, NULL);

      if (err)

	{

	  printf ("pthread_cond_init failed: %s\n", strerror (err));

	  return 1;

	}

    }

  for (i = 0; i < N; ++i)

    if ((err = pthread_join (th[i], NULL)) != 0)

      {

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

	return 1;

      }

  puts ("done");

  return 0;

}

#define TEST_FUNCTION do_test ()

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