[fpc-devel] Proof of Concept ARC implementation

[hinstance at yandex.ru]

In my opinion, such thing as cycle detector would be an unnecessary complication; however I have not studied the subject in depth therefore not sure

27.10.2014, 13:10, "Sven Barth" <pascaldragon at googlemail.com>:
> On 27.10.2014 11:12, Nikolai Zhubr wrote:
>>  Hello Sven!
>>
>>  25.10.2014 0:23, Sven Barth:
>>>  Hello together!
>>>
>>>  I've now finished my Proof of Concept ARC implementation which is based
>>>  on the RFC I published a few weeks back:
>>  [...]
>>
>>  Could you please elaborate a bit on what will happen to cyclic
>>  references? Is there autodetection in place already? And then, will it
>>  be usable for managing of e.g. 100M-long 2-way linked list?
>
> Cycles need to be manually handled currently by declaring some
> participants of the cycle as "weak".
> Another possiblity would be DoDi's suggestion to implement a "finalizer"
> (e.g. Delphi's DisposeOf) which would force the instance to destroy
> itself, though that would come with its own set of problems...
> A third possiblity would be to implement a cycle detector in the
> decrement helper, but I haven't come around that for now as I wanted to
> get a first rough implementation out to you all ;)
>
> Yours,
> Sven
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