Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Tue, 4 Nov 2014 12:17:51 -0600

Hi Damiano,

If you want to be able to run multiple independent instances of a
sequence program, you have to flag it as re-entrant, by adding a line
"option +r;" after the program statement for example (you can also do it
with a command-line flag, but the option statement is simpler).

- Andrew

On 11/04/2014 12:11 PM, Damiano Bortolato wrote:
> Hi,
> 
> I' trying to spawn a set of instances of a sequencer program from ioc
> shell, the program is like this:
> 
> 
> program myProgram
> 
> int myVar;
> assign myVar to "myPv{n}";
> monitor myVar;
> 
> 
> ss mySs {
> ...
> }
> 
> Different input pvs are assigned to different program instances:
> 
> epics> seq myProgram "n=_1"
> epics> seq myProgram "n=_2"
> ...
> epics> seq myProgram "n=_n"
> 
> 
> The problem is that the several instances seem to interfere each other,
> I tried to print the address of the input variable (myVar) and I noticed
> that they share the same myVar!!!
> I've tried to move the myVar's definition inside the state set but the
> problem persists.
> 
> Is there a way to work around this problem, or must I run my sequencers
> as stand-alone applications?
> 
> Thanks in advance
> 
> Damiano
> 

-- 
People everywhere confuse what they read in newspapers with news.
-- A. J. Liebling

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System