text: /* Copyright (C) 2003, 2004 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, write to the Free
     Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
     02111-1307 USA.  */
  
  #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"
  