[omniORB] Getting a servant pointer given a reference

[Russell Kliese]

> > In a nutshell, I am trying to figure out a way to get a 
> > pointer to the 
> > servent object given a reference.
> > 
> > So far, I have tried the following:
> >
> > NodeProxy* NodeProxy::getNodeProxy (dom::Node_ptr node) {
> > 
> >     PortableServer::POA_var poa = server->getPOA() ;
> >     PortableServer::ServantBase* serv = 
> > poa->reference_to_servant(node);
> >    
> >     NodeProxy* nodeProxy = dynamic_cast<NodeProxy*>(serv);
> >     // check to make sure it's not null
> >     return nodeProxy;
> > }   
> > 
> > With omniORB3 I get the following:
> > 
> > omniORB: ERROR -- trying to release an object with reference 
> > count <= 0.
> >  CORBA::release() may have been called too many times on an object
> >  reference.
> > 
> > I have experimented with _add_ref() to no avail.
> >
> > With omniORB4 I am just getting a segfault further down the track ;(
>
> Perhaps I'm missing something, but the only bit of that code which appears
> that it could possibly be wrong is the getPOA and the assignment of its
> result to a POA_var. Is getPOA your own method, and does it duplicate the
> POA before returning it? If it doesn't duplicate it, then the release in
> POA_var's destructor would be inappropriate.

I didn't think to go back and look at that stuff. That's all it was. The getPOA
function was just returning a poa_var. This was changed to:

return PortableServer::POA::_duplicate(poa);

And that solved the problems. The segfaults happending further down the
track was caused by a similar problem.

Thanks for the help and quick response.

Cheers,

Russell Kliese

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