text: /* Copyright (C) 2002-2016 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_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
  static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
  
  static pthread_barrier_t bar;
  
  
  static void *
  tf (void *a)
  {
    int i = (long int) a;
    int err;
  
    printf ("child %d: lock\n", i);
  
    err = pthread_mutex_lock (&mut);
    if (err != 0)
      error (EXIT_FAILURE, err, "locking in child failed");
  
    printf ("child %d: sync\n", i);
  
    int e = pthread_barrier_wait (&bar);
    if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
      {
        puts ("child: barrier_wait failed");
        exit (1);
      }
  
    printf ("child %d: wait\n", i);
  
    err = pthread_cond_wait (&cond, &mut);
    if (err != 0)
      error (EXIT_FAILURE, err, "child %d: failed to wait", i);
  
    printf ("child %d: woken up\n", i);
  
    err = pthread_mutex_unlock (&mut);
    if (err != 0)
      error (EXIT_FAILURE, err, "child %d: unlock[2] failed", i);
  
    printf ("child %d: done\n", i);
  
    return NULL;
  }
  
  
  #define N 10
  
  
  static int
  do_test (void)
  {
    pthread_t th[N];
    int i;
    int err;
  
    printf ("&cond = %p\n&mut = %p\n", &cond, &mut);
  
    if (pthread_barrier_init (&bar, NULL, 2) != 0)
      {
        puts ("barrier_init 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;
      }
  
    for (i = 0; i < N; ++i)
      {
        printf ("create thread %d\n", i);
  
        err = pthread_create (&th[i], &at, tf, (void *) (long int) i);
        if (err != 0)
  	error (EXIT_FAILURE, err, "cannot create thread %d", i);
  
        printf ("wait for child %d\n", i);
  
        /* Wait for the child to start up and get the mutex for the
  	 conditional variable.  */
        int e = pthread_barrier_wait (&bar);
        if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  	{
  	  puts ("barrier_wait failed");
  	  exit (1);
  	}
      }
  
    if (pthread_attr_destroy (&at) != 0)
      {
        puts ("attr_destroy failed");
        return 1;
      }
  
    puts ("get lock outselves");
  
    err = pthread_mutex_lock (&mut);
    if (err != 0)
      error (EXIT_FAILURE, err, "mut locking failed");
  
    puts ("broadcast");
  
    /* Wake up all threads.  */
    err = pthread_cond_broadcast (&cond);
    if (err != 0)
      error (EXIT_FAILURE, err, "parent: broadcast failed");
  
    err = pthread_mutex_unlock (&mut);
    if (err != 0)
      error (EXIT_FAILURE, err, "mut unlocking failed");
  
    /* Join all threads.  */
    for (i = 0; i < N; ++i)
      {
        printf ("join thread %d\n", i);
  
        err = pthread_join (th[i], NULL);
        if (err != 0)
  	error (EXIT_FAILURE, err, "join of child %d failed", i);
      }
  
    puts ("done");
  
    return 0;
  }
  
  
  #define TEST_FUNCTION do_test ()
  #include "../test-skeleton.c"
  