[kepler-dev] Threaded actors in the DE Domain

[ian.brown@hsbcib.com]

Edward, thanks for looking into this. Due to sitting behind a proxy, I
cannot access the cvs repository directly and so rely on the nightly build
source snapshots. It appears the change did not make it into the one from
last night, so it will be Monday before I can try this out and get back to
you.

Ian



                                                                           
             "Edward A. Lee"                                               
             <eal at eecs.berkele                                             
             y.edu>                                                     To 
                                       ian.brown at hsbcib.com                
             13/09/2007 19:23                                           cc 
             Mail Size: 8762           kepler-dev at ecoinformatics.org       
                                                                   Subject 
                                       Re: [kepler-dev] Threaded actors in 
                                       the DE Domain                       
                                                                    Entity 
                                       Investment Banking Europe - IBEU    
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           





But setDeferringChangeRequests(false) is only one of the ways that
change requests can be executed.  They are also executed in
Manager.iterate(),
on every iteration of the model.

I suspect that I have found a bug in DEDirector that would cause
it to block execution of change requests. Basically, it sits in
a loop waiting for events to appear on the event queue (or waiting
for real time to pass if you have synchronizeToRealTime set), but
while in this loop, it essentially ignores calls to its stopFire()
method. These calls occur on each changeRequest, and are meant
to cause the director to return control to the Manager.

I've implemented and checked in a fix in DEDirector.
Can you try removing your executeChangeRequests() call and
see if this solves the problem?

Edward


At 10:01 AM 9/13/2007, ian.brown at hsbcib.com wrote:
>Edward, when I press the run button, ptolemy.actor.Manager.execute() is
>called ... and this runs the model until it is stopped. At the start, the
>initialize() method of this class calls setDeferringChangeRequests(true).
>This basically blocks any change requests.
>setDeferringChangeRequests(false) is only called in the finally clause of
>the execute() method once the model has been stopped.
>
>Ian
>



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