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Jar Locking

Jar Locking

2006-08-31       - By Marc Farrow
Reply:     1     2     3     4     5     6     7     8     9     10     >>  

Thanks Stephen.  If I set all references to Ant to null and forced GC, would
that resolve the problem?

On 8/31/06, Stephen McConnell <mcconnell@(protected)> wrote:
>
>
>
> > -----Original Message-----
> > From: Marc Farrow [mailto:marc.farrow@(protected)]
> > Sent: Thursday, 31 August 2006 6:13 AM
> > To: ant-user
> > Subject: Jar Locking
> >
> > Everytime I run an ant task (either in NetBeans or from
> > within Java Code), the executing jar gets locked and I cannot
> > delete the jar.  I am copying the ant script and the
> > dependent jar that it needs to run and then executing the ant
> > tasks.  Then I wish to delete the "new" copy I just created
> > to run, but a jar I am using is locked and will not allow me.
> >  This in on a Windows 2000 machine.
>
> The jar file is locked because it is referenced in a classloader.  The
> lock
> will be released once the classloader is garbage collected but that will
> not
> happen until all references to all classes defined by the jar are no
> longer
> referenced.  If the jar file in question is referenced by Ant then chances
> are that your file will not be released until the Ant Project instance is
> no
> longer in use.
>
> The solution to the problem is to handle the creation and updating
> operations under two distinct projects.  One project handles the creation
> of
> a new jar file, and the second project handles the replication of the jar
> (with the assumption that your second project does not include a classpath
> reference to the jar file).
>
> Cheers, Steve.
>
>
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--
Marc Farrow

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