}
gboolean  g_once_init_enter (volatile gsize *value_location)
{
  
  if (g_atomic_pointer_get (value_location) !=0)
  {
    return FALSE;
  }
  g_mutex_lock(g_once_init_mutex);
  
  if (!g_hash_table_lookup(g_once_init_hashtable, (gpointer) value_location))
  {
    g_hash_table_insert(g_once_init_hashtable, (gpointer)  value_location, (gpointer) 1);
    g_mutex_unlock(g_once_init_mutex);
    return  TRUE;
  }
  else
  {
    while(g_hash_table_lookup(g_once_init_hashtable, (gpointer) value_location))
      g_cond_wait(g_once_init_cond, g_once_init_mutex);
    
      g_mutex_unlock(g_once_init_mutex);
  }
  
  return FALSE;  
}


void  g_once_init_leave (volatile gsize *value_location,  gsize value)
{
  g_return_if_fail (*value_location == 0);

  *value_location = value;
  
  g_mutex_lock(g_once_init_mutex);
  g_hash_table_remove(g_once_init_hashtable, value_location);
  g_cond_broadcast (g_once_init_cond);
  g_mutex_unlock(g_once_init_mutex);
  
}

GType
g_test_get_type (void)
{
  
   static GType test_type = 0;
  if(g_once_init_enter(&test_type))
  {
    static const GTypeInfo test_info = {
      sizeof (GTestClass),
      NULL,
      NULL,
      (GClassInitFunc) g_test_class_init,
      NULL,
      NULL,
      sizeof (GTest),
      0,
      (GInstanceInitFunc) g_test_init,
      NULL
    };
    
    GType id  = g_type_register_static (G_TYPE_OBJECT, "GTest", &test_info, 0);
    
    g_once_init_leave(&test_type, id);
  }
  return test_type;
  
}