def start_receive_thread(self, nchan):

        if self._recv_thread is None:

            self._recv_thread = threading.Thread(target=_buffer_recv_worker,
                                                 args=(self, ))
            self._recv_thread.daemon = True
            self._recv_thread.start()
Update existing watch descriptors |wd|. The |mask| value, the
dataset/ETHPy150Open mne-tools/mne-python/mne/realtime/fieldtrip_client.py/FieldTripClient.start_receive_thread--crossover with--dataset/ETHPy150Open seb-m/pyinotify/python2/pyinotify.py/WatchManager.update_watch