Re: [Wrapper-user] Shutdown hook not triggered when jvm is unexpectedly killed

[<nic...@uk...>]

Hi Leif,
Thanks for the answer.
(I am continually pleasantly surprised/impressed on the implementation
quality/completeness of Java Service Wrapper.... :-)
-Nick





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le...@ta...@lists.sourceforge.net - 13/04/2005 13:23


Please respond to wra...@li...

Sent by:    wra...@li...



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Subject:    Re: [Wrapper-user] Shutdown hook not triggered when jvm is
       unexpectedly killed


Nick,
    Calling System.exit() is considered as a normal shutdown request by
the Wrapper.
It will cause the Wrapper to shutdown normally.   If on the other hand,
you call
Runtime.getRuntime().halt() the Wrapper will interpret is as the JVM
crashing and it
will be restarted.  This is because the exit() causes shutdown hooks to
run whereas
halt() does not.

    You can add some control over what happens when the JVM exits by
setting up
Event handlers based on the JVM exit code.  See the following for details:
http://wrapper.tanukisoftware.org/doc/english/prop-on-exit-n.html

Cheers,
Leif

nic...@uk... wrote:

>Leif,
>
>If someone puts an inadvertant System.exit() in the code, will the wrapper
>restart it?
>
>-Nick
>
>



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