Re: [Wrapper-user] Cant get a thread-dump

[Leif M. <le...@ta...>]

Freddy,
There are a few ways to do this.

1) Make use of the WrapperManager.requestThreadDump() method.
This of course requires a hook into your application.

2) Make use of the WrapperActionServer class.
You have to add some code to initialize this class, but other than that
it is quite simple.  You can then initiate a thread dump or perform
other functions via telnet.

3) Use the command file feature to invoke the thread dump:
http://wrapper.tanukisoftware.org/doc/english/prop-commandfile.html
Please note that there is currently a problem in current versions
where the Wrapper can not invoke a thread dump unless a console
window exists for the service.   This has been fixed for the upcoming
3.2.0 release.
To work around this in the current version you must either add a
console with the wrapper.ntservice.console=true property
http://wrapper.tanukisoftware.org/doc/english/prop-ntservice-console.html
Or tell the wrapper to execute thread dumps if a shutdown failure
occurs: wrapper.request_thread_dump_on_failed_jvm_exit=true
http://wrapper.tanukisoftware.org/doc/english/prop-request-thread-dump-on-failed-jvm-exit.html

Cheers,
Leif

Freddy Andersen wrote:
> I'm running this on windows XP for now and I'm trying to figure out 
> how I can get a thread-dump from the running wrapper (JBoss 4.0.2)
>
> I don't want to run this in a console window but as a service. When 
> the server has issues I would like to send a signal to the jvm and get 
> a thread-dump, is this not possible?
>
> Here is my config:
(snip)