On Wed, Jun 20, 2012 at 7:17 AM, Sébastien Villemot <
sebastien.ville...@ens.fr> wrote:
> Michael Goffioul <michael.goffi...@gmail.com> writes:
>
> > On Tue, Jun 19, 2012 at 11:45 PM, Sébastien Villemot <
> sebastien.ville...@ens.fr> wrote:
> >
> > Michael Goffioul <michael.goffi...@gmail.com> writes:
> >
> > > GCJ is crashing at JVM initialization. At that point, no
> octave_java
> > > object has been allocated yet.
> >
> > My understanding is that during JVM initialization, octave_java
> objects
> > *are* allocated through static java variables initalizations.
> Indeed, if
> > I comment out this line...
> >
> > vm_args.add
> ("-Djava.system.class.loader=org.octave.OctClassLoader");
> >
> > ...I get no crash during JVM initialization with GCJ.
> >
> > This is pure java. By octave_java, I mean objects of the C++ class
> > octave_java as defined in __java__.h. Of course when starting the JVM,
> > static java objects are created, but these are entirely managed by the
> > JVM and there's no C++ bridge object created yet in the octave world.
>
> Ok, then the GCJ case is probably different from the OpenJDK case.
>
> Still I’m clueless about what’s corrupting the memory under OpenJDK
> 7. The valgrind log does not differ from the one that I obtain under
> OpenJDK 6. JWE has kindly volunteered to help, maybe there is some hope
> :)
>
>
Ok, here's what I've done so far.
I've recompiled octave dev branch on my F16 (x86_64) box. I've also added
the java and io package. Simple tests of the java package work fine (like
"l = java_new('java.util.ArrayList'); l.add(10); l.toString();"). This is
done using java-1.7.0-openjdk-1.7.0.3-2.2.1.fc16.7.x86_64
Running octave within valgrind shows a bunch of invalid writes when loading
the JVM, but I the same bunch of messages when running java alone, so I
don't think these are relevant (given the fact that JVM manages its own
memory space, I'm not that surprized).
If you could provide and example of how to reproduce your issue, I could
give it a try here.
Michael.
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