Re: [tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK

[<Dan...@dl...>]

Hi again,

first of all, thank you for your quick reply!

I haven't yet been able to figure out why I'm getting this =
java.lang.ExceptionInInitializerError, but here's what I get when =
running jtclsh with the -verbose:class option.



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:class
-verbose:class
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
[...]
[Loaded javax.media.opengl.GLEventListener from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.AVList from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WWObject from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.AVListImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WWObjectImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowGLAutoDrawable from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.SceneController from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWind from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.RetrievalService from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.ThreadedTaskService from =
tcl.lang.TclClassLoader]
[Loaded java.lang.ExceptionInInitializerError from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
[Loaded tcl.lang.ReflectObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.ArrayObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.JavaInfoCmd from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded java.beans.IntrospectionException from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
java.lang.ExceptionInInitializerError
%



There seems to be something wrong with the =
gov.nasa.worldwind.ThreadedTaskService class, right? Or is it when =
trying to load the next class that the error occurs? In this case, how =
can I find out which class it's trying to load after it has successfully =
loaded the ThreadedTaskService class?

Also, running jtclsh with the -verbose:jni option yields this result:



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:jni
-verbose:jni
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
[...]
[Dynamic-linking native method =
sun.reflect.NativeMethodAccessorImpl.invoke0 ... JNI]
[Dynamic-linking native method =
com.sun.opengl.impl.x11.GLX.glXChooseVisual1 ... JNI]
[Dynamic-linking native method =
com.sun.opengl.impl.x11.GLX.XGetVisualInfo1 ... JNI]
[Dynamic-linking native method com.sun.opengl.impl.x11.GLX.glXGetConfig1 =
... JNI]
[Dynamic-linking native method sun.awt.X11GraphicsDevice.getNumConfigs =
... JNI]     //here it stays for a while, before continuing
[Dynamic-linking native method tcl.lang.CObject.newCObject ... JNI]
[Dynamic-linking native method tcl.lang.CObject.incrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.TclList.append ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setErrorCode ... JNI]
[Dynamic-linking native method tcl.lang.CObject.decrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setResult ... JNI]
java.lang.ExceptionInInitializerError
%





I also tried to create an instance of another class, =
gov.nasa.worldwind.awt.WorldWindowGLJPanel, and got a similar result:


With -verbose:class option:



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:class
-verbose:class
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLJPanel
[...]
[Loaded gov.nasa.worldwind.AVListImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WWObjectImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowImpl from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWindowGLAutoDrawable from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.SceneController from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.WorldWind from tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.RetrievalService from =
tcl.lang.TclClassLoader]
[Loaded gov.nasa.worldwind.ThreadedTaskService from =
tcl.lang.TclClassLoader]
[Loaded java.lang.ExceptionInInitializerError from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
[Loaded tcl.lang.ReflectObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.ArrayObject from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded tcl.lang.JavaInfoCmd from =
file:/opt/tclblend/lib/tcljava1.4.0/tcljava.jar]
[Loaded java.beans.IntrospectionException from =
/usr/lib/jvm/java-1.5.0-sun-1.5.0_06/jre/lib/rt.jar]
java.lang.ExceptionInInitializerError
%





With -verbose:jni option:



medina@medina:/opt/tclblend/bin> ./jtclsh
% set tclblend_init -verbose:jni
-verbose:jni
% package require java
[...]
1.4.0
% java::new gov.nasa.worldwind.awt.WorldWindowGLJPanel
[...]
[Dynamic-linking native method java.lang.StrictMath.floor ... JNI]
[Dynamic-linking native method java.awt.KeyboardFocusManager.initIDs ... =
JNI]
[Dynamic-linking native method sun.awt.X11.XlibWrapper.XEventsQueued ... =
JNI]
[Dynamic-linking native method sun.awt.X11.XToolkit.waitForEvents ... =
JNI]
[Dynamic-linking native method java.lang.Class.isInstance ... JNI]
[Dynamic-linking native method =
sun.reflect.NativeMethodAccessorImpl.invoke0 ... JNI]
[Dynamic-linking native method java.awt.Rectangle.initIDs ... JNI]     =
//here it stays for a while, before continuing
[Dynamic-linking native method tcl.lang.CObject.newCObject ... JNI]
[Dynamic-linking native method tcl.lang.CObject.incrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.TclList.append ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setErrorCode ... JNI]
[Dynamic-linking native method tcl.lang.CObject.decrRefCount ... JNI]
[Dynamic-linking native method tcl.lang.Interp.setResult ... JNI]
java.lang.ExceptionInInitializerError
%=20





Just in case, the contents of the ThreadedTaskService.java file are as =
follows:




---------------------------------------
---------------------------------------
---------------------------------------




/*
Copyright (C) 2001, 2006 United States Government
as represented by the Administrator of the
National Aeronautics and Space Administration.
All Rights Reserved.
*/
package gov.nasa.worldwind;

/**
 * @author Tom Gaskins
 * @version $Id: ThreadedTaskService.java 1792 2007-05-08 21:28:37Z =
tgaskins $
 */
public class ThreadedTaskService extends WWObjectImpl // TODO: Extract =
interface
    implements Thread.UncaughtExceptionHandler
{
    static final private int DEFAULT_CORE_POOL_SIZE =3D 1;
    static final private int DEFAULT_QUEUE_SIZE =3D 10;
    private static final String RUNNING_THREAD_NAME_PREFIX =3D =
WorldWind.retrieveMessage(
        "ThreadedTaskService.RUNNING_THREAD_NAME_PREFIX", =
"ThreadStrings");
    private static final String IDLE_THREAD_NAME_PREFIX =3D =
WorldWind.retrieveMessage(
        "ThreadedTaskService.IDLE_THREAD_NAME_PREFIX", "ThreadStrings");
    private java.util.concurrent.ConcurrentLinkedQueue<Runnable> =
activeTasks; // tasks currently allocated a thread
    private TaskExecutor executor; // thread pool for running retrievers

    public ThreadedTaskService()
    {
        Integer poolSize =3D =
Configuration.getIntegerValue(AVKey.THREADED_TASK_POOL_SIZE, =
DEFAULT_CORE_POOL_SIZE);
        Integer queueSize =3D =
Configuration.getIntegerValue(AVKey.THREADED_TASK_QUEUE_SIZE, =
DEFAULT_QUEUE_SIZE);

        // this.executor runs the tasks, each in their own thread
        this.executor =3D new TaskExecutor(poolSize, queueSize);

        // this.activeTasks holds the list of currently executing tasks
        this.activeTasks =3D new =
java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
    }

    public void uncaughtException(Thread thread, Throwable throwable)
    {
        if (throwable instanceof WWDuplicateRequestException)
            return;

        String message =3D =
WorldWind.retrieveErrMsg("ThreadedTaskService.UncaughtExceptionDuringTask=
") + thread.getName();
        WorldWind.logger().log(java.util.logging.Level.FINE, message);
        =
Thread.currentThread().getThreadGroup().uncaughtException(thread, =
throwable);
    }

    private class TaskExecutor extends =
java.util.concurrent.ThreadPoolExecutor
    {
        private static final long THREAD_TIMEOUT =3D 2; // keep idle =
threads alive this many seconds

        private TaskExecutor(int poolSize, int queueSize)
        {
            super(poolSize, poolSize, THREAD_TIMEOUT, =
java.util.concurrent.TimeUnit.SECONDS,
                new =
java.util.concurrent.ArrayBlockingQueue<Runnable>(queueSize),
                new java.util.concurrent.ThreadFactory()
                {
                    public Thread newThread(Runnable runnable)
                    {
                        Thread thread =3D new Thread(runnable);
                        thread.setDaemon(true);
                        thread.setPriority(Thread.MIN_PRIORITY);
                        =
thread.setUncaughtExceptionHandler(ThreadedTaskService.this);
                        return thread;
                    }
                }, new =
java.util.concurrent.ThreadPoolExecutor.DiscardPolicy() // abandon task =
when queue is full
            {
                public void rejectedExecution(Runnable runnable,
                    java.util.concurrent.ThreadPoolExecutor =
threadPoolExecutor)
                {
                    // Interposes logging for rejected execution
                    String message =3D =
WorldWind.retrieveErrMsg("ThreadedTaskService.ResourceRejected") + =
runnable;
                    =
WorldWind.logger().log(java.util.logging.Level.FINEST, message);
                    super.rejectedExecution(runnable, =
threadPoolExecutor);
                }
            });
        }

        protected void beforeExecute(Thread thread, Runnable runnable)
        {
            WorldWind.logger().log(java.util.logging.Level.FINEST, =
WorldWind.retrieveErrMsg(
                "ThreadedTaskService.EnteringBeforeExecute"));

            if (thread =3D=3D null)
            {
                String msg =3D =
WorldWind.retrieveErrMsg("nullValue.ThreadIsNull");
                WorldWind.logger().log(java.util.logging.Level.FINE, =
msg);
                throw new IllegalArgumentException(msg);
            }

            if (runnable =3D=3D null)
            {
                String msg =3D =
WorldWind.retrieveErrMsg("nullValue.RunnableIsNull");
                WorldWind.logger().log(java.util.logging.Level.FINE, =
msg);
                throw new IllegalArgumentException(msg);
            }

            if (ThreadedTaskService.this.activeTasks.contains(runnable))
            {
                String message =3D =
WorldWind.retrieveErrMsg("ThreadedTaskService.CancellingDuplicateTask") =
+ runnable;
                WorldWind.logger().log(java.util.logging.Level.FINER, =
message);
                throw new WWDuplicateRequestException(message);
            }

            ThreadedTaskService.this.activeTasks.add(runnable);

            if (RUNNING_THREAD_NAME_PREFIX !=3D null)
                thread.setName(RUNNING_THREAD_NAME_PREFIX + runnable);
            thread.setPriority(Thread.MIN_PRIORITY);
            =
thread.setUncaughtExceptionHandler(ThreadedTaskService.this);

            super.beforeExecute(thread, runnable);

            WorldWind.logger().log(java.util.logging.Level.FINEST, =
WorldWind.retrieveErrMsg(
                "ThreadedTaskService.LeavingBeforeExecute"));
        }

        protected void afterExecute(Runnable runnable, Throwable =
throwable)
        {
            WorldWind.logger().log(java.util.logging.Level.FINEST, =
WorldWind.retrieveErrMsg(
                "ThreadedTaskService.EnteringAfterExecute"));

            if (runnable =3D=3D null)
            {
                String msg =3D =
WorldWind.retrieveErrMsg("nullValue.RunnableIsNull");
                WorldWind.logger().log(java.util.logging.Level.FINE, =
msg);
                throw new IllegalArgumentException(msg);
            }

            super.afterExecute(runnable, throwable);

            ThreadedTaskService.this.activeTasks.remove(runnable);

            if (throwable =3D=3D null && IDLE_THREAD_NAME_PREFIX !=3D =
null)
                Thread.currentThread().setName(IDLE_THREAD_NAME_PREFIX);
        }
    }

    public synchronized boolean contains(Runnable runnable)
    {
        //noinspection SimplifiableIfStatement
        if (runnable =3D=3D null)
            return false;

        return (this.activeTasks.contains(runnable) || =
this.executor.getQueue().contains(runnable));
    }

    /**
     * Enqueues a task to run.
     * @param runnable the task to add
     * @throws IllegalArgumentException if <code>runnable</code> is null
     */
    public synchronized void addTask(Runnable runnable)
    {
        if (runnable =3D=3D null)
        {
            String message =3D =
WorldWind.retrieveErrMsg("nullValue.RunnableIsNull");
            WorldWind.logger().log(java.util.logging.Level.FINE, =
message);
            throw new IllegalArgumentException(message);
        }

        // Do not queue duplicates.
        if (this.activeTasks.contains(runnable) || =
this.executor.getQueue().contains(runnable))
            return;

        this.executor.execute(runnable);
    }

    public boolean isFull()
    {
        return this.executor.getQueue().remainingCapacity() =3D=3D 0;
    }
}






---------------------------------------
---------------------------------------
---------------------------------------






I really would be very grateful if you could help me with this.

Kind regards,
Daniel Medina




-----Original Message-----
From: tcl...@li... on behalf of Mo DeJong
Sent: Wed 5/23/2007 9:46 PM
To: A list for users of tcljava
Subject: Re: [tcljava-user] Using Tcl Blend with NASA WorldWind Java SDK
=20
Dan...@dl... wrote:
> Hi,
>  =20
> Specifically, I get the following error message when trying to create =
a WorldWindowGLCanvas object from jtclsh:
> =20
>  medina@onyx:/opt/tclblend/bin> ./jtclsh
>  % package require java
>  1.4.0
>  % java::call System getProperty "java.version"
>  1.5.0_06
>  =20

Tcl Blend should work find with JDK 1.5.

>  % java::new javax.swing.JFrame
>  java0x1
>  % java::new javax.media.opengl.GLCanvas
>  java0x2
>  % java::new gov.nasa.worldwind.layers.IconLayer
>  java0x3
>  % java::new gov.nasa.worldwind.layers.Earth.EarthNASAPlaceNameLayer
>  java0x4
>  % java::new gov.nasa.worldwind.awt.AWTInputHandler
>  java0x5
>  % java::new gov.nasa.worldwind.awt.WorldWindowGLCanvas
>  java.lang.ExceptionInInitializerError
>  =20
This is a generic Java error that indicates an exception was raised=20
while loading the class or invoking the
static init method for the class. You will have to look at the class in=20
question to find out why. If this package
uses native code then it could fail because it does not find needed DLL=20
on the PATH.

I hope that helps
Mo


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