Implementing reference count.

Hello,

I am attempting (without success so far) to maintain a reference count on
objects that are
created from a factory.

What I am looking for is a way to release the object when the Pyro Proxy is
released on
the client side (i.e. set to None and python does its thing with GB).

Suppose that I have class A (which is registered with the name server) that
acts as an
object factory, when I request an instance of say class B, the following
happens.

I register the instance of B() with the daemon, and instantiate a Pyro
Proxy (with the uri
resulting from the registration) which I return as opposed to the object
B() itself.

when the client calls the B::release(), the object deregisters itself with
the Pyro server
daemon and python garbage collects B() on the server side (with a dandling
ref on the client side).

This works great. However, I can not expect people to explicitly call the
B::release(), so I
thought I would be smart and simply subclass Pyro.core.Proxy to take
care of this in the
destructor for them ... I wasn't smart as it hangs when when attempt to
return the proxy
from the server side...

the destructor looks like this (simplified)

def __del__(self):
   self._elab_release_ref()
   Pyro4.core.Proxy.__del__(self)

as I am writing this I remember that my server type is multiplex (no thread
pool) and I believe
that the self._elab... causes the server to call itself and block.

Regardless, it is clear to me that what I am doing is wrong and I was
wondering if anyone
had an idea on how this should be done.

Thanks in advance.

/Laurent

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