public function add(ApnsPHP_Message $message)
	{
		static $n = 0;
		if ($n >= $this->_nProcesses) {
			$n = 0;
		}
		sem_acquire($this->_hSem);
		$aQueue = $this->_getQueue(self::SHM_MESSAGES_QUEUE_KEY_START, $n);
		$aQueue[] = $message;
		$this->_setQueue(self::SHM_MESSAGES_QUEUE_KEY_START, $n, $aQueue);
		sem_release($this->_hSem);
		$n++;
	}