Re: [Wrapper-user] errors on shutdown

[Hubert F. <hub...@ab...>]

Leif,

I think I have isolated the code that causes this behaviour:

In my stop function, called by Wrapper, I flag the application thread
to shutdown and do a join() on that thread to await it's death.
Removing this join() makes the behaviour "normal", the log looks fine
then. 
Is this something one should avoid to do?

Regards 
hub



>>> "Hubert Felber" <hub...@ab...> 04.02.2007 12:00 >>>
Leif,

Yes, this happened in console mode after hitting Ctrl-c, but also when
running as service (allow to interact with console, display a
console).
I started and stopped the service with Windows Service Manager and got
the same errors.

<What is happening in that stop method?
Nothing more then  telling a thread to  exit and wait for that with a
join().

<Could you post your WrapperListener implementation? 
I appended the skeleton and the conf file. Thank you very much for
taking a look.

btw I noticed something else:
Calling WrapperManager.signalStopping(1000); I expected that the value
is added to the TimeToWait defined in the conf file. But it seams that
it is not added but replaced. This is the new time to wait. And if you
call it on Windows with value 1000, it causes a quite immediate exit.

Regards
Hubert



>>> Leif Mortenson <le...@ta...> 02.02.2007 19:45 >>>
Hubert,
You have gotten into an unexpected state. It looks like you are
running
in
console mode and have invoked the shutdown using CTRL-C. That is
triggering the wrapper shutdown process. Your WrapperListener.stop
method is being started and completing normally. The problem happens
after that.

What is happening in that stop method? Is it triggering another thread
that may be calling System.exit? The shutdown thread expects to be
able to unregister the shutdown hook, but another thread has already
initiated the shutdown of the JVM.

Could you post your WrapperListener implementation? I am going to
need to see it to understand exactly what is going on here.

Cheers,
Leif

Hubert Felber wrote:
> Hi,
>
> I made a skeleton of integration method 3 to play with wrapper.
> Shutdown the service  gives me curious errors. Could anybody please
> take a look at the attached log file and tell me, what's going
wrong?
>
> I get a "Unable to unregister shutdown hook:
> java.lang.IllegalStateException: Shutdown in progress
> I didn't register one, so it must be one of used by wrapper.
>
> And a "System.exit appears to have been called from within the 
> WrapperListener.stop() method", 
> which I would never do, of course. My stop method is called and I
> return 0. 
>
> I'm using the latest trunk  wrapper  3.2.4-a, my app ist just a
> skeleton wich doesn't do anything but starting a thread which prints
> dots on stdout, and is closed properly. There is no difference
running
> it as console app or as service.
> The application exits, but I would like to know what these errors
are
> and how to avoid them.
>
> Can anybody help please?
>
> Thank you
> Hubert


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services,
security?
Get stuff done quickly with pre-integrated technology to make your job
easier.
Download IBM WebSphere Application Server v.1.0.1 based on Apache
Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642


_______________________________________________
Wrapper-user mailing list
Wra...@li... 
https://lists.sourceforge.net/lists/listinfo/wrapper-user