| ConcurrentModificationException | ConcurrentModificationException 2007-01-11 - By peter reilly
On 1/11/07, Matt Benson <gudnabrsam@(protected)> wrote:
> I agree, Peter. However, the patch I am currently
> testing adds synchro blocks to all Hashtable copies in
> PropertyHelper. :)
I agree, I was just too lazy to do it for the rest!
Peter
>
> -Matt
>
> --- Peter Reilly <peter.kitt.reilly@(protected)> wrote:
>
> > Looking at the code and the stack error, the
> > following patch may
> > fix the problem:
> > Index:
> > src/main/org/apache/tools/ant/PropertyHelper.java
> >
> ==================================================================> > ---
> > src/main/org/apache/tools/ant/PropertyHelper.java
> > (revision 495336)
> > +++
> > src/main/org/apache/tools/ant/PropertyHelper.java
> > (working copy)
> > @@ -470,7 +470,9 @@
> > * (including user properties).
> > */
> > public Hashtable getProperties() {
> > - return new Hashtable(properties);
> > + synchronized (properties) {
> > + return new Hashtable(properties);
> > + }
> > // There is a better way to save the
> > context. This shouldn't
> > // delegate to next, it's for backward
> > compatibility only.
> > }
> >
> >
> > On 1/11/07, Thomas Voigt <tv_spambox@(protected)> wrote:
> > > Hi,
> > >
> > > -------- Original-Nachricht --------
> > > Datum: Thu, 11 Jan 2007 11:23:50 -0600
> > > Von: "Andrew Close" <aclose@(protected)>
> > > An: "Ant Users List" <user@(protected)>
> > > Betreff: Re: ConcurrentModificationException
> > >
> > > > On 1/11/07, Thomas Voigt <tv_spambox@(protected)>
> > wrote:
> > > > > Hi,
> > > > >
> > > > > we recently started to get
> > ConcurrentModificationExceptions with ant.
> > > > </snipped>
> > > >
> > > > are you testing this script out on your single
> > processor development
> > > > machine? i've had problems with using thread
> > arguments on single
> > > > processor machines...
> > >
> > > No, but there are parts of the build that are
> > single threaded because we build a large number of
> > libraries that can't be easily parallelized, and the
> > error only occurs in the <parallel> sections.
> > >
> > > Regards, Thomas
> > >
> > > --
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> > >
> >
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