> > De : Paolo Bonzini <[email protected]>
> > On 08/24/2010 11:05 AM, Mathieu Suen wrote:
> > >
> > > Hi,
> > >
> > > I got on object in C that come from smalltalk.
> > > It is a subclass of a CStruct.
> > >
> > > Now in the VM I got an OOP.
> > > How do I get back the C structure.
> >
> > vmProxy->OOPToCObject, or gst_oop_to_cobject, depending on whether
> > you're in a module or you're the one linking to libgst.
> >
> > > I am not inside a cCall or a primitive.
> >
> > Where are you? :)
>
> :)
> I am inside the _gst_send_message_internal.
> I go look how OOPToCObject is implement.
So I used the _gst_oop_to_c_object but my object have one more instance
variable:
CStruct subclass: CJitState [
| codeBuffer |
...snip...
]
So the function _gst_oop_to_c_object does not return the expected structure.
Instead I have one more
field in the structure.
So the cast don't work in C:
stack = (jit_stack*)_gst_oop_to_c_object(jitMethod->jitState);
What is the proper way of dealing with that?
I could just use:
(jit_stack*)_gst_oop_to_c_object(jitMethod->jitState)+1;
But don't know if is it a good idea.
Thanks
>
>
> Thanks
>
> >
> > Paolo
> >
>
>
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