/* 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 <stdlib.h>

#include <string.h>

#include <unistd.h>

static int do_test (void);

#define TEST_FUNCTION do_test ()

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

/* Note that this test requires more than the standard.  It is

   required that there are no spurious wakeups if only more readers

   are added.  This is a reasonable demand.  */

static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;

#define N 10

static void *

tf (void *arg)

{

  int i = (long int) arg;

  int err;

  /* Get the mutex.  */

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    {

      printf ("child %d mutex_lock failed: %s\n", i, strerror (err));

      exit (1);

    }

  /* This call should never return.  */

  xpthread_cond_wait (&cond, &mut;;

  puts ("error: pthread_cond_wait in tf returned");

  /* We should never get here.  */

  exit (1);

  return NULL;

}

static int

do_test (void)

{

  int err;

  int i;

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

    {

      pthread_t th;

      if (i != 0)

	{

	  /* Release the mutex.  */

	  err = pthread_mutex_unlock (&mut;;

	  if (err != 0)

	    {

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

	      return 1;

	    }

	}

      err = pthread_create (&th, NULL, tf, (void *) (long int) i);

      if (err != 0)

	{

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

	  return 1;

	}

      /* Get the mutex.  */

      err = pthread_mutex_lock (&mut;;

      if (err != 0)

	{

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

	  return 1;

	}

    }

  delayed_exit (1);

  /* This call should never return.  */

  xpthread_cond_wait (&cond, &mut;;

  puts ("error: pthread_cond_wait in do_test returned");

  return 1;

}