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 <
[hidden email]> 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 <
[hidden email]>
>>
>> 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 <
[hidden email]> 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.
Locked
