What about a shutdown hook?
Runtime.getRuntime().addShutdownHook(new Thread() {
public void run() { /* whatever */ }
});
see also http://www.onjava.com/pub/a/onjava/2003/03/26/shutdownhook.html
On Tue, 11 Jan 2005 13:21:42 -0800, Doug Cutting <[EMAIL PROTECTED]> wrote:
> Joseph Ottinger wrote:
> > As one for whom the question's come up recently, I'd say that locks need
> > to be terminated gracefully, instead. I've noticed a number of cases where
> > the locks get abandoned in exceptional conditions, which is almost exactly
> > what you don't want.
>
> The problem is that this is hard to do from Java. A typical approach is
> to put the process id in the lock file, then, if that process is dead,
> ignore the lock file. But Java does not let one know process ids. Java
> 1.4 provides a LockFile mechanism which should mostly solve this, but
> Lucene 1.4.3 does not yet require Java 1.4 and hence cannot use that
> feature. Lucene 2.0 is likely to require Java 1.4 and should be able to
> do a better job of automatically unlocking indexes when processes die.
>
> Doug
>
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