[vtkusers] awt_Lock
philipp.batchelor at kcl.ac.uk
philipp.batchelor at kcl.ac.uk
Fri Apr 4 14:22:26 EST 2003
I did compile vtk myself, and used the java on our system. Matlab was
installed on our system, it comes with its own jvm. I wasn't able
to get Matlab to use 1.4.1, normally there is an env variable called
MATLAB_JAVA for this, but matlab doesn't start if I set it to 1.4.1. But
the fact that the java example without vtkPanel works seems to imply that
it is not the main issue.
I did test Cone.java, which worked fine, I'll try more examples
P
On Fri, 4 Apr 2003, Jeff Lee wrote:
> did you compile vtk yourself, or are you using a nightly? it looks odd
> that matlab is running a 1.3.1 jvm and you are using vtk binaries linked
> against java1.4.1. have you tried any of the java examples that came
> with vtk?
> -Jeff
>
> philipp.batchelor at kcl.ac.uk wrote:
>
> >>What does the stack trace look like? awt_Lock comes from java libs.
> >>Can you post the offensive code and also include a copy of the vtkPanel
> >>you are using? Is this vtk4.2?
> >>-Jeff
> >>
> >>
> >>
> >
> >Yes, sorry, vtk 4.2, (gcc 3.2).
> >In matlab, the whole error message is:
> ><BEGIN MATLAB ERROR>
> >
> >
> >>h = javaObject('HelloWorldApp')
> >>
> >>
> >??? Error using ==> javaObject
> >Java exception occurred:
> >java.lang.UnsatisfiedLinkError:
> >/projects/vtk/linux2.2/vtkNightly/VTK-4.2.1/bin/libvtkRenderingJava.so:
> >/usr/local/java/j2sdk1.4.1/jre/lib/i386/libjawt.so: undefined symbol:
> >awt_Lock
> > at java.lang.ClassLoader$NativeLibrary.load(Native Method)
> > at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1382)
> > at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1306)
> > at java.lang.Runtime.loadLibrary0(Runtime.java:749)
> > at java.lang.System.loadLibrary(System.java:820)
> > at vtk.vtkPanel.<clinit>(vtkPanel.java:31)
> > at HelloWorldApp.<init>(HelloWorldApp.java:22).
> >
> ><END MATLAB>
> >The HelloWorldApp.java is
> ><BEGIN JAVA CLASS>
> >import vtk.*;
> >public class HelloWorldApp {
> > public HelloWorldApp() {System.out.println("Hello Yalin!"); };
> > public static void hello() {
> > System.out.println("Hello World! 2"); //Display the string.
> > }
> > protected vtkPanel renPanel = new vtkPanel();
> >
> >}
> ><END>
> >
> >Without the vtkPanel line, matlab runs the class as expected.
> >Doing System.loadLibrary("vtkRenderingJava"); leads to the same error
> >message.
> >Cheers,
> >P
> >
> >
> >
> >>vtk
> >>
> >>
> >mailing list led me to try putting a > >
> >
> >
> >>>'protected vtkPanel renPanel = new vtkPanel();'
> >>>
> >>>just before. This then causes the error message
> >>>'...libvtkRenderingJava.so:
> >>>/usr/local/java/j2sdk1.4.1/jre/lib/i386/libjawt.so: undefined symbol: awt_Lock
> >>>
> >>>and a search for 'awt_Lock' doesn't find much, the most relevant maybe
> >>>http://www.thalion-graphics.de/jgraph/doc/devel/graph3d-jniconstraints.html
> >>>
> >>>All the other vtk libraries do not generate complaints from matlab, so the
> >>>problem really seems to come from
> >>>System.loadLibrary("vtkRenderingJava");
> >>>
> >>>I greped the vtk source for 'awt', but I'm not sure what to look for, I
> >>>also ldd'ed the libraries, this looks ok.
> >>>I'm not an everyday user of java, so maybe I'm missing something?
> >>>
> >>>Versions:
> >>>linux: RH 7.1, 2.4.7-10
> >>>java: jdk1.4.1
> >>>matlab: 6.5r13,
> >>>typing version -java in matlab produces 'Java 1.3.1 with Blackdown
> >>>Java-Linux Team Java HotSpot(TM) Server VM'
> >>>I noticed in vtkJavaAwt.h 'awt.version = JAWT_VERSION_1_3;'
> >>>could it be a version problem?
> >>>
> >>>any suggestion welcome...and sorry as I realise that it is as much a java
> >>>question as a vtk one.
> >>>
> >>>P. Batchelor
> >>>
> >>>
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