Re: how do I debug dgc?

Peter Jones - JavaSoft East wrote:
> > I have an rmi server that won't go away after I unbind it.  No other
> > java process is running except it and rmiregistry.
>
>
> > I have no threads of my own running, so only rmi is keeping the jvm
> > alive.
>
>
> Just to be sure, does this VM stay alive even beyond a period of time
> on the order of the DGC lease duration (which is by default ten
> minutes)?  ["Client" VMs that abruptly terminate, including by
> System.exit, may not have the opportunity to send the appropriate DGC
> message to indicate their release of a live remote reference, and then
> the server-side DGC implementation can only conclude this fact after
> the client VM's DGC lease has expired (without renewal).]
Yes, it stays around for at least a day, sometimes more before I get
around to killing it.  My test didn't last as long but was at least a
half hour, I think.

> Just to be sure, have you tried killing the rmiregistry process (and
> waiting beyond the DGC lease duration)?

Yes.
> If your remote object's class happens to implement the
> java.rmi.server.Unreferenced interface,

It doesn't :(

 does its unreferenced() method
> get invoked around when you would expect the VM to go away?  If so,
> that would show that it's a local reference keeping the remote object
> exported, not a remote one (through DGC).
>
>
> > I set sun.rmi.dgc.logLevel=VERBOSE but I the output is not
> > meaningful to me.
>
>
> Can you post the output of this logging, or send it to me off list?
>
> -- Peter
I'll try to find it.

===========================================================================
To unsubscribe, send email to listserv@xxxxxxxxxxxx and include in the body
of the message "signoff RMI-USERS".  For general help, send email to
listserv@xxxxxxxxxxxx and include in the body of the message "help".

For a list of frequently asked RMI questions please refer to:
http://java.sun.com/j2se/1.3/docs/guide/rmi/faq.html

To view past RMI-USERS postings, please see:
http://archives.java.sun.com/archives/rmi-users.html