Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Tue, 30 Jun 2015 13:25:01 -0500

Hi Diego,

On 06/30/2015 08:50 AM, Diego Sanz wrote:
> When my IOC application find a situation that I want it to be finished,
> which is the best way to do it? I have used epicsExit(0), and the
> function that I registered for exit is executed correctly, but when the
> IOC shell ends, the console requires to write "reset" command to recover
> the echo of the console, and its correct working. Is there any reason
> for this? is it normal?

This is happening because your iocsh is waiting for keyboard characters
inside GNU readline, which has modified the terminal settings to allow
it to manage the user experience. I assume you must be executing the
epicsExit(0) routine in some other thread, and unfortunately this is
currently the result of killing the iocsh thread like that.

I can think of a few ways around the problem, at least one of which we
ought to implement, but it would be simplest for you to start the IOC
from a script which runs 'stty sane' immediately after the IOC exits.
That command should be sufficient and is a little less severe than a
full terminal reset.

HTH,

- Andrew

-- 
Light thinks it travels faster than anything but it is wrong.
No matter how fast light travels, it finds the darkness has
always got there first, and is waiting for it.
    -- Terry Pratchett, Reaper Man

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System