Re: [opengoop] automatic call of destructor at garbage collection time

[PJ M <pjm...@ya...>]

Jim,
 
I have and idea, but I am not sure if it qualify as easy though.
We could keep a buffer of all opened VI Refs and whenever the spawn process is left with only one reference (The one the spawn process opened) to a given VI, then the VI went Idle.
 
Philippe

Jim Kring <ji...@ji...> wrote:
I am trying to think of a way (preferably simple) to have the destructor
automatically called when object garbage collection occurs. OpenGOOP object
data-stores are reentrant LV2 globals which are called by reference. In
fact the object reference is a VI Reference. When the call chain that
instantiated the object goes idle, the data store VI is garbage collected by
LabVIEW. It would be nice to be able to intercept this and run the
destructor method of the object, automatically. This would make debugging a
lot easier In order to do this we would need to spawn a process that opens
a reference to the object LV2 global, so that it does not get garbage
collected. Then we would need to poll the execution state of the top-level
VI in the call chain that instantiated the object. When this top-level VI
goes idle we would then invoke the destructor. What would make this much
easier, is if the event structure had a VI Event called "Going Idle" or
similar.

Any thoughts?

-Jim



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