se->device_memory_usage = DeviceMemoryUsage;
  se->create_stream = CreateStream;
  se->destroy_stream = DestroyStream;
  se->create_stream_dependency = CreateStreamDependency;
  se->get_stream_status = GetStreamStatus;
  se->create_event = CreateEvent;
  se->destroy_event = DestroyEvent;
  se->get_event_status = GetEventStatus;
  se->record_event = RecordEvent;
  se->wait_for_event = WaitForEvent;

      stream_handle_ = nullptr;
    }
  }
  absl::Status RefreshStatus() override {
    tensorflow::TF_StatusPtr c_status(TF_NewStatus());
    stream_executor_->get_stream_status(device_, stream_handle_,
                                        c_status.get());
    absl::Status status = tensorflow::StatusFromTF_Status(c_status.get());
    CheckStatus(status);
    return status;
  }