public function onShutdown()
	{
		if (posix_getpid() == $this->_nParentPid) {
			$this->_log('INFO: Parent shutdown, cleaning memory...');
			@shm_remove($this->_hShm) && @shm_detach($this->_hShm);
			@sem_remove($this->_hSem);
		}
	}