add queue length status.

lichao

2021-03-31 4353f73ea0c30c776a3957dc674d750e51519ca3

 src/socket.cpp

@@ -63,7 +63,6 @@
      }
      DEFER1(imsg.Release(shm_));
      return Queue::Send(shm_, kBHBusQueueId, imsg, timeout_ms);

   } catch (...) {
      return false;
   }