RobotData -- Single or Multi Process
====================================

The :cpp:class:`~robot_interfaces::RobotData` class serves as a
communication link between the back end and the front end.  All data is stored
there in time series.

There are two different implementations of ``RobotData``:

- :cpp:class:`~robot_interfaces::SingleProcessRobotData`:  Uses normal memory for
  the time series.  Use this if all modules (back end, front end, logger, ...)
  are running in the same process.
- :cpp:class:`~robot_interfaces::MultiProcessRobotData`:  Uses shared memory for
  inter-process communication.  Use this if back end and front end are running
  in separate processes.


See the demos_ for implementations with both the single and the multi process
RobotData.


.. _demos: https://github.com/open-dynamic-robot-initiative/robot_interfaces/blob/master/demos