Luc won the prize :) Alex, you understood almost right, except a missing part of adding an object to weak registry:
obj := Object new. objExecutor := obj executor. >>> WeakRegistry default add: obj executor: objExecutor. obj := nil. Smalltalk garbageCollect. if you look at default implementation of #executor, it just does a shallow copy of receiver. This is why two lines: objExecutor := obj executor. WeakRegistry default add: obj executor: objExecutor. equivalent to just: WeakRegistry default add: obj On 26 August 2011 21:18, Luc Fabresse <[email protected]> wrote: > Hi Alex, > > Here what I understood: > > o := Object new. > WeakRegistry default add: o. "a shallow copy of o is registered" > o := nil. > Smalltalk garbageCollect. > "the shallow copy of o will receive the finalize message" > > Cheers, > > #Luc > > > > 2011/8/26 Alex Schenkman <[email protected]> >> >> Let's see if I get this right: >> obj := Object new. >> objExecutor := obj executor. >> obj := nil. >> Smalltalk garbageCollect. >> Will this execute the method finalize on objExecutor? >> Is this the way to use it? >> Thanks! >> >> On Friday, August 26, 2011 at 5:53 PM, Igor Stasenko wrote: >> >> On 26 August 2011 16:29, Alex Schenkman <[email protected]> wrote: >> >> Hi List: >> Is there a method being called right befire an object is being garbage >> collected (finalized)? >> I see toFinalizeSend: to: with:, but I do not see any senders. >> thanks in advance! >> >> Squeak finalization is a post-mortem finalization. The #finalize >> message are sent to executor object, >> which is often a shallow copy of the object which is died. >> >> >> -- >> Best regards, >> Igor Stasenko AKA sig. >> > > -- Best regards, Igor Stasenko AKA sig.
