[Vm-dev] How to addGCRoot: ? help requested

[Nicolas Cellier]

I wanted to experiment a plugin and need to register a couple of
classes that some primitive will test/instantiate.
The ugly way is to pollute specialObjectArray...
But #recreateSpecialObjectsArray recommend using addGCRoot()
Fine, I'd like to try.

What I'd like to do is register my couple of classes in a
primRegister() primitive
(once for all or at each image startup, or at each snapshot, whatever...)
Then to later use the registered classes in primDoSomething().

I can see ObjectMemory>>addGCRoot: but unfortunately, absolutely no
sender of it to serve as an example...
I even don't know how to access the objectMemory from within a
SmartSyntaxInterpreterPlugin ?
I can only see a interpreterProxy and

Then how to retrieve my registered objects? they are store in the
extraRoots at some index, but that index is not returned by
addGCRoot:...
Anyway, the index could change thanks to removeGCRoot:, so I'm stuck here...
I must be missing something...
Or maybe addGCRoot: is just here to prevent an Object to be garbage
collected but does not really offer a registering service...

If you know about any documentation/example hanging around or have
some clues I'll be happy that you share them !

Last note, I'm in a VMMaker oscog flavour...

Nicolas