public static function shutdown()
 {
     $error = error_get_last();
     if ($error['message']) {
         $message = new message($error['message'], self::$levels['fatal']);
         $message->setFile($error['file']);
         $message->setLine($error['line']);
     } else {
         $message = new message("Exit", self::$levels['notice']);
     }
     self::_log($message);
 }