[kepler-dev] Controlled actors order in PN(?)

[Efrat Frank]

Hi Norbert,
This is very useful. Thanks a lot!
Efrat

Norbert Podhorszki wrote:
>
> Hi Efrat,
>
> ptolemy.lib.actor.Commutator
>
> will provide what you need. Connect both output to this actor, and 
> connect this actor to the (single) VariableSetter.
> The token on the second channel will not be taken by the Commutator as 
> long as the first becomes processed.
>
> Norbert
>
> On Tue, 26 Sep 2006, Efrat Frank wrote:
>
>> Hi all,
>>
>> In the attached workflow I'm using 2 variable setters to update the 
>> value of the same parameter. I'm updating the variable twice so that 
>> if the lower part of the workflow fails, the output variable will 
>> hold the value of the upper part (see image). But, if both parts run 
>> successfully they race over which is going to update first..  This 
>> workflow cannot use SDF and when using PN, I cannot guarantee that 
>> 'Variable Setter 2' will execute prior to 'Variable Setter 1'. Since 
>> this is a sink actor, I can't use triggers either.
>>
>> Is there a way to decide this race in PN? Could it be solved using a 
>> different director?
>>
>> Thanks a lot,
>> Efrat
>>
>>
>>
>