/* Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.

   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 <time.h>

#include <unistd.h>

static pthread_once_t once = PTHREAD_ONCE_INIT;

static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;

static pthread_barrier_t bar;

static int global;

static int cl_called;

static void

once_handler1 (void)

{

  if (pthread_mutex_lock (&mut) != 0)

    {

      puts ("once_handler1: mutex_lock failed");

      exit (1);

    }

  int r = pthread_barrier_wait (&bar);

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

    {

      puts ("once_handler1: barrier_wait failed");

      exit (1);

    }

  pthread_cond_wait (&cond, &mut;;

  /* We should never get here.  */

}

static void

once_handler2 (void)

{

  global = 1;

}

static void

cl (void *arg)

{

  ++cl_called;

}

static void *

tf1 (void *arg)

{

  pthread_cleanup_push (cl, NULL);

  pthread_once (&once, once_handler1);

  pthread_cleanup_pop (0);

  /* We should never get here.  */

  puts ("pthread_once in tf returned");

  exit (1);

}

static void *

tf2 (void *arg)

{

  pthread_cleanup_push (cl, NULL);

  int r = pthread_barrier_wait (&bar);

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

    {

      puts ("once_handler2: barrier_wait failed");

      exit (1);

    }

  pthread_cleanup_pop (0);

  pthread_once (&once, once_handler2);

  return NULL;

}

static int

do_test (void)

{

  pthread_t th[2];

  if (pthread_barrier_init (&bar, NULL, 2) != 0)

    {

      puts ("barrier_init failed");

      return 1;

    }

  if (pthread_create (&th[0], NULL, tf1, NULL) != 0)

    {

      puts ("first create failed");

      return 1;

    }

  int r = pthread_barrier_wait (&bar);

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

    {

      puts ("first barrier_wait failed");

      return 1;

    }

  if (pthread_mutex_lock (&mut) != 0)

    {

      puts ("mutex_lock failed");

      return 1;

    }

  /* We unlock the mutex so that we catch the case where the pthread_cond_wait

     call incorrectly resumes and tries to get the mutex.  */

  if (pthread_mutex_unlock (&mut) != 0)

    {

      puts ("mutex_unlock failed");

      return 1;

    }

  if (pthread_create (&th[1], NULL, tf2, NULL) != 0)

    {

      puts ("second create failed");

      return 1;

    }

  r = pthread_barrier_wait (&bar);

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

    {

      puts ("second barrier_wait failed");

      return 1;

    }

  /* Give the second thread a chance to reach the pthread_once call.  */

  sleep (2);

  /* Cancel the thread.  */

  if (pthread_cancel (th[0]) != 0)

    {

      puts ("cancel failed");

      return 1;

    }

  void *result;

  pthread_join (th[0], &result);

  if (result != PTHREAD_CANCELED)

    {

      puts ("first join didn't return PTHREAD_CANCELED");

      return 1;

    }

  puts ("joined first thread");

  pthread_join (th[1], &result);

  if (result != NULL)

    {

      puts ("second join didn't return PTHREAD_CANCELED");

      return 1;

    }

  if (global != 1)

    {

      puts ("global still 0");

      return 1;

    }

  if (cl_called != 1)

    {

      printf ("cl_called = %d\n", cl_called);

      return 1;

    }

  return 0;

}

#define TEST_FUNCTION do_test ()

#define TIMEOUT 4

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