Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Wed, 17 Jun 2020 20:06:22 -0700

On 6/17/20 4:26 PM, Johnson, Andrew N. via Tech-talk wrote:
>> While we're at it I would like to propose a forth solution: How about
>> beefing up the IOC itself so it can listen on a socket for connections
>> to the IOC shell? This would come with a few advantages (some of them
>> might only apply to systems running systemd):
>>
>> ...
>>
>> Thoughts? Maybe a project for the upcoming online codeathon?
> 
> I think that would be best implemented in an external module. You don’t have to use the iocsh to run your IOCs – you can write your own shell, or set up the stdin/stdout/stderr streams to point to something else before running iocsh() in the main() routine. You might want to disable readline if you do that though unless you are completely emulating a tty.

Something like this would be functionally similar to the RTEMS telnetd
created by Till Straumann.  I quite liked that feature.

I think having the option of a more daemon-like IOC, while preserving
the feature set of IOC shell, would be an excellent project.  While
it would probably be best to try this idea as an external module (if
possible).  I see no reason why this sort of enhancement couldn't be
included in Base.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System