Hi - I realised that in my code the weak function does get called, but
it isn't kicking in until about 4000 objects are created.
I put a counter in my create/destroy functions, and after 10,000
objects are created and I shut down, 3600 still exist undestroyed.
Is there a certain function I should be calling to tell V8 that I've
finished and it's time to collect all those remaining objects?
At the moment the only `shutdown' I'm doing is context.Dispose(); - is
that all that needs to be done?
As for your question, I did notice that in the Chrome code in their
weak gc function they called object.ClearWeak(); - but that might just
be to remove any hanging pointers.
I'd really love to see an official example of this kind of stuff. All
the examples I have found of weak references are using a global or
member var rather than a new/delete system.
garry
On Sep 27, 9:59 am, bell <[EMAIL PROTECTED]> wrote:
> In my tests, it works, with the MakeWeak-callback. The callback ist
> called the first time, when there are about 400 unused Persistent
> Objects allocated
>
> i use following js code to test, where the fuction myobj returns a
> Persistent Object
>
> for (var c=0;c<200000;c++) {
> var x=myobj()
>
> }
>
> unfortuanatly, when i have allocated and deallocated about 160000
> objects, my program crashes. it looks like the GarbageCollector isn't
> freeing the Persistent Object after calling theMakeWeak-callback.
>
> in my callback i only delete my c++ object, do i have to do something
> with the Persistent<Object> ?
>
> markus
>
> On 26 Sep., 22:55, Garry <[EMAIL PROTECTED]> wrote:
>
> > Hey - did you solve this problem? I'm facing the same thing right
> > now..
>
> > I want to make an object that I push into Javascript, then when JS
> >garbagecollects it I get a callback so I can delete the c++ side
> > pointer. Is this the wrong approach?
>
> > garry
>
> > On Sep 22, 9:57 am, [EMAIL PROTECTED] wrote:
>
> > > Thank you for the example.
> > > I also use:
> > > ........
> > > Persistent<Object> self = Persistent<Object>::New(args.Holder());
> > > self.MakeWeak(0, Point_Destroy);
>
> > > self->SetInternalField(0, External::New(p));
> > > return self;}
>
> > > void Point_Destroy(Persistent<Object> self, void* parameter)
> > > {
> > > Local<External> external =
> > > Local<External>::Cast(self->GetInternalField(0));
>
> > > deletestatic_cast<Point*>(external->Value());
>
> > > }
>
> > > but the "Point_Destroy" Function is never called. So when should it be
> > > called in your example?
>
> > > Thanks
> > > bg- Zitierten Text ausblenden -
>
> > - Zitierten Text anzeigen -
--~--~---------~--~----~------------~-------~--~----~
v8-users mailing list
[email protected]
http://groups.google.com/group/v8-users
-~----------~----~----~----~------~----~------~--~---
