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<== Date ==> <== Thread ==>

Subject: Re: Sequencer: are variables shared?
From: Damiano Bortolato <damiano.bortolato@lnl.infn.it>
To: tech-talk@aps.anl.gov
Date: Wed, 05 Nov 2014 01:04:09 +0100
On 11/04/2014 07:17 PM, Andrew Johnson wrote:
> 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
>>
Hi Andrew,

Yes, now it works, thank you.

- Damiano

References:
Sequencer: are variables shared? Damiano Bortolato
Re: Sequencer: are variables shared? Andrew Johnson

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