log.log(device, log.LOG_DEBUG, this + " closing");
log.log(device, LogService.LOG_DEBUG, this + " closing");
	public void close() {		if (device != null) {			if (Activator.DEBUG) {				log.log(device, log.LOG_DEBUG, this + " closing"); //$NON-NLS-1$			}			running = false; /* request thread to stop */			super.close();			device = null;		}	}