RE: [Wrapper-user] Problems with JRockit

[Martin V. <ma...@ja...>]

Thanks! Both my test application and JBoss work now under both Sun and
JRockit VMs.

I had to use WrapperSimpleApp instead of WrapperStartStopApp, since JBoss'
shutdown class doesn't kill all threads. WrapperSimpleApp makes a clean exit
anyway because JBoss has shutdown hooks which are called when the VM shuts
down with System.exit.

Martin

> -----Original Message-----
> From: wra...@li...
> [mailto:wra...@li...]On Behalf Of Leif
> Mortenson
> Sent: Monday, January 20, 2003 4:34 PM
> To: wra...@li...
> Subject: Re: [Wrapper-user] Problems with JRockit
>
>
> Martin,
>     I started responding before reading all the way to the bottom.  You
> actually
> understand the problem perfectly.
>
>     The Wrapper does the same the thing as the JVM normally does to decide
> when the application is ready to quit.  It counts the active threads.
>  With the IBM
> and Sun JVMs, this list contains a single thread which is started as
> soon as the
> main thread terminates.  I believe this thread then waits for all other
> non daemon
> threads to terminate at which point it calls System.exit.
>     So the Wrapper always wait until there is only 1 other non-daemon
> thread rather
> than 0 to account for that system thread.  It may be that the JRockit
> JVM does not
> work the same way? Most likely that system thread does not show up in
> the thread
> list.
>
>     Assuming that is the case, then I will have to add a special case
> for JRockit so
> it will wait for a thread count of 0 for JRockit and 1 for all other
> JVMs.  The count of
> 1 works for Blackdown, IBM and Sun JVMs.  I have not tried any others.
>
>     Anyway.  I think I fixed the problem  I am now looking at the
> resolved full version
> of the JVM.  If it contains "JRockit" then the system thread count is
> set to 0.
> Otherwise it is set to 1.
>
>     I uploaded a temporary release at the following URL.  It also
> contains several
> other fixes, so take a look at the release notes.  I would like to get a
> new release
> out soon, so please let me know whether or not this fixes your problem.
>  Ie. Make
> sure it works on both Sun and JRockit for your application.  I tested
> the Sun JVM
> here.  But I am going to have to rely on you for the JRockit testing :-)
>
> http://www.tanukisoftware.com/wrapper_2.3.0c_src_with_doc_src.zip
> http://www.tanukisoftware.com/wrapper_win32_2.3.0c.zip
>
> Thanks for the great report.
> Cheers,
> Leif
>
>
>
>
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