[fpc-devel] Improving Ref Counting
jamie-junk at blueyonder.co.uk
Sun Feb 27 13:31:42 CET 2005
Uberto Barbini wrote:
>>>I also thought immediately what Uberto already said: how do you recognize
>>>a valid/invalid reference without accessing memory that is invalid in the
>>How does a GC do this? It would have the same problem?
> A GC dont' try to recognize a valid/invalid reference, it is invoked to free
> unused memory, which it assume point to valid memory.
A GC needs to trace an object's references to see if anything still
points to it. How else can it decide whether an object is no longer in use?
> Anyway I still don't understand the goal of this discussion.
> Do you want to add some managed object in fpc? OK, but I suggest to start
> studing how GC works in Java, Python and dotnet.
I dont want a full blown GC just a way to speed up ref counting so that
it can be used elsewhere.
> As for me I'd rather ask for not managed Interfaces in Delphi (fpc ones are
You already have them in Iunknown, ansistrings and variants. Its all a
question of making them faster cause they are dog slow atm.
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