27 unsigned long d_interval;
28 std::atomic_bool d_stop;
29 boost::posix_time::ptime d_start_time;
30 gr::thread::mutex d_mutex;
31 gr::thread::thread d_thread;
32 gr::thread::condition_variable d_msg_received;
38 gr_vector_const_void_star& input_items,
39 gr_vector_void_star& output_items );