/* Copyright (C) 2002-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   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 <stdint.h>

#include <stdlib.h>

#include <unistd.h>

#define N 20

static pthread_t th[N];

static pthread_mutex_t lock[N];

static void *tf (void *a)

{

  uintptr_t idx = (uintptr_t) a;

  pthread_mutex_lock (&lock[idx]);

  return pthread_equal (pthread_self (), th[idx]) ? NULL : (void *) 1l;

}

int

do_test (void)

{

  if (pthread_equal (pthread_self (), pthread_self ()) == 0)

    {

      puts ("pthread_equal (pthread_self (), pthread_self ()) failed");

      exit (1);

    }

  pthread_attr_t at;

  if (pthread_attr_init (&at) != 0)

    {

      puts ("attr_init failed");

      return 1;

    }

  if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)

    {

      puts ("attr_setstacksize failed");

      return 1;

    }

  int i;

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

    {

      if (pthread_mutex_init (&lock[i], NULL) != 0)

	{

	  puts ("mutex_init failed");

	  exit (1);

	}

      if (pthread_mutex_lock (&lock[i]) != 0)

	{

	  puts ("mutex_lock failed");

	  exit (1);

	}

      if (pthread_create (&th[i], &at, tf, (void *) (long int) i) != 0)

	{

	  puts ("create failed");

	  exit (1);

	}

      if (pthread_mutex_unlock (&lock[i]) != 0)

	{

	  puts ("mutex_unlock failed");

	  exit (1);

	}

      printf ("created thread %d\n", i);

    }

  if (pthread_attr_destroy (&at) != 0)

    {

      puts ("attr_destroy failed");

      return 1;

    }

  int result = 0;

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

    {

      void *r;

      int e;

      if ((e = pthread_join (th[i], &r)) != 0)

	{

	  printf ("join failed: %d\n", e);

	  _exit (1);

	}

      else if (r != NULL)

	result = 1;

    }

  return result;

}

#define TEST_FUNCTION do_test ()

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