23 Mar
2004
23 Mar
'04
1:52 a.m.
Hi Bryce,
weakRef := WeakValueAssociation new. Smalltalk garbageCollect. "make it old" TestClass gcTest: weakRef Smalltalk garbageCollectMost. "incr. GC" weakRef value. "and it's now gone"
TestClass class>>gcTest: weakRef weakRef value: Object new.
By moving the new object creation out into it's own method we remove the risk of it getting captured but the context object.
I left this running in a loop to throw an error if weakRef's value is ever nil and so far it hasn't happened in several hundreds loops yet (it's slow because of the full GCs). This makes me wonder if you are using some kind of custom VM that you've built yourself - what platform, what VM *are* you on?
Cheers, - Andreas