/* 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 <error.h>

#include <pthread.h>

#include <stdio.h>

#include <stdlib.h>

static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;

static void *

tf (void *p)

{

  int err;

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    error (EXIT_FAILURE, err, "child: cannot get mutex");

  puts ("child: got mutex; signalling");

  pthread_cond_signal (&cond;;

  puts ("child: unlock");

  err = pthread_mutex_unlock (&mut;;

  if (err != 0)

    error (EXIT_FAILURE, err, "child: cannot unlock");

  puts ("child: done");

  return NULL;

}

static int

do_test (void)

{

  pthread_t th;

  int err;

  printf ("&cond = %p\n&mut = %p\n", &cond, &mut;;

  puts ("parent: get mutex");

  err = pthread_mutex_lock (&mut;;

  if (err != 0)

    error (EXIT_FAILURE, err, "parent: cannot get mutex");

  puts ("parent: create child");

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

  if (err != 0)

    error (EXIT_FAILURE, err, "parent: cannot create thread");

  puts ("parent: wait for condition");

  /* This test will fail on spurious wake-ups, which are allowed; however,

     the current implementation shouldn't produce spurious wake-ups in the

     scenario we are testing here.  */

  err = pthread_cond_wait (&cond, &mut;;

  if (err != 0)

    error (EXIT_FAILURE, err, "parent: cannot wait fir signal");

  puts ("parent: got signal");

  err = pthread_join (th, NULL);

  if (err != 0)

    error (EXIT_FAILURE, err, "parent: failed to join");

  puts ("done");

  return 0;

}

#define TEST_FUNCTION do_test ()

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