>>finalize questions
Michael van der Gulik
squeakml at gulik.co.nz
Sun Aug 20 05:48:08 UTC 2006
Hi all.
Two questions for today.
---------
1. What does Object>>finalize do?
It appears not to do much at all. I had a quick poke at the VM source
(but not enough to grok what's happening). It appears to only be used
for weak references or something?
I made a test class (Dunce) and implemented:
finalize
Transcript show: 'finalize called..'.
but the Transcript remains blank even lots of "Dunce new" and then
"Dunce instanceCount" (returns 1).
Also, "w := WeakArray with: (Dunce new)" doesn't call finalize either...
-----------
2. I have an object with a process "in" it. How can I make sure that
process is terminated when there are no more references to that object?
I assume processes are automagically added to the garbage collector's
root pointer collection, preventing that object from being garbage
collected.
i.e.:
Dunce>>aProcess
[ [ self doSomeCleanUpAndWait5Seconds ] repeat ]
forkNamed: 'Silly process'.
Michael vdG.
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