Udo Schneider wrote:
All,
I just stumbled over something which thought was pretty easy - turned
out it isn't as easy as I thought or I'm simply _______ (fill in
expression of choice like "too dumb", "blind", etc.)
I have an object which starts a background process to do it's job.
This object holds a reference to the running proccess in an instance
variable.
My goal is to #terminate that proccess once the object isn't needed
anymore (before GC).
Using WeakRegistry for the object itself doesn't work. E.g.
MyObject>>#initialize
super initialize.
WeakRegistry default register: self.
myProcess := self startProcess.
MyObject>>#finalize
myProcess terminate. "Doesn't work. myProcess is already nil"
I think this is due to all the ivars of the object already being nil
when #finalize is begin called. As far as I read the code this is due
to Object>>#executor returning a shallow copy of the object and thus
being by intention ...
So how to proceed? Did I miss something obvious? Is overwriting
#executor the way to go (in terms of "does it work" and "doesn't it
break something")?
Best Regards,
Udo
I don't know much about finalization of Weak constructs, but maybe an
alternative. I assume you have something like..
startProcess
[
"do stuff"
] fork.
so how about...
startProcess
[ [
"do stuff"
myProcess = nil.
] whileFalse ] fork.
cheers -ben
