| ConcurrentModificationException | ConcurrentModificationException 2007-01-11 - By peter reilly
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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