[fpc-devel] Suggestion: reference counted objects

Sun Sep 28 21:00:13 CEST 2014

Hi Sven,

On Sat, Sep 27, 2014 at 7:33 PM, Sven Barth <pascaldragon at googlemail.com>
wrote:

> Huh? Delphi really prohibits such things inside the destructor? Would you
> mind to share an example (possibly including error messages), please?
>

Sorry, I wasn't clear enough. 
With "prohibits" I didn't mean that you get a compiler error. It compiles
and runs just fine but you get a stack overflow at runtime
 when the dest
ructor is called
.

I've done a different approach already: the decrease helper sets refcount
> to -1 directly before it calls the destructor and both the increase and the
> decrease helper check for -1. Considering that it's currently only a proof
> of concept I can live with the performance impact that comparison might
> have.

OK, but keep my proposal in mind since it has overhead only at
BeforeDestruction which is once per instance lifecycle.

--Constantine
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