Native exception when JFrame is disposed

Sylvie · January 6, 2005, 12:32am

I am getting an exception in the OpenGL library when I exit my application and dispose the main JFrame. This only happens on my Linux machine, which uses Red Hat 9, an NVidia Quadro4 750 XGL with the latest 66.29 drivers, and the latest 1.1b07 Jogl libraries.

Anyone have any ideas? Thanks for your help.

Sean

The first part of the exception log reads:

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0x4DDF3D96
Function=(null)+0x4DDF3D96
Library=/usr/lib/libGL.so.1

NOTE: We are unable to locate the function name symbol for the error
just occurred. Please refer to release documentation for possible
reason and solutions.

Current Java thread:
at net.java.games.jogl.impl.x11.GLX.glXDestroyContext(Native Method)
at net.java.games.jogl.impl.x11.X11GLContext.destroyImpl(X11GLContext.java:177)
at net.java.games.jogl.impl.GLContext.destroy(GLContext.java:642)
- locked <0x44d06d00> (a net.java.games.jogl.impl.x11.X11OnscreenGLContext)
at net.java.games.jogl.GLCanvas.removeNotify(GLCanvas.java:96)
at java.awt.Container.removeNotify(Container.java:2068)
- locked <0x44d07628> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4304)
at java.awt.Container.removeNotify(Container.java:2068)
- locked <0x44d07628> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4304)
at java.awt.Container.removeNotify(Container.java:2068)
- locked <0x44d07628> (a java.awt.Component$AWTTreeLock)
at javax.swing.JComponent.removeNotify(JComponent.java:4304)
at javax.swing.JRootPane.removeNotify(JRootPane.java:691)
at java.awt.Container.removeNotify(Container.java:2068)
- locked <0x44d07628> (a java.awt.Component$AWTTreeLock)
at java.awt.Frame.removeNotify(Frame.java:866)
- locked <0x44d07628> (a java.awt.Component$AWTTreeLock)
at java.awt.Window$1DisposeAction.run(Window.java:557)
at java.awt.Window.dispose(Window.java:570)
at magix.lib.graphics.jogl.JoglSimpleTest.close(JoglSimpleTest.java:166)
at magix.lib.graphics.jogl.JoglSimpleTest.access$0(JoglSimpleTest.java:162)
at magix.lib.graphics.jogl.JoglSimpleTest$1.windowClosing(JoglSimpleTest.java:61)
at java.awt.Window.processWindowEvent(Window.java:1121)
at javax.swing.JFrame.processWindowEvent(JFrame.java:266)
at java.awt.Window.processEvent(Window.java:1079)
at java.awt.Component.dispatchEventImpl(Component.java:3615)
at java.awt.Container.dispatchEventImpl(Container.java:1627)
at java.awt.Window.dispatchEventImpl(Window.java:1606)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

This test class reproduces the problem for me:

/*

JoglSimpleTest.java
*/

import java.awt.event.*;

import javax.swing.*;

import net.java.games.jogl.;
import net.java.games.jogl.util.;

/**
A simple test that Jogl is working.
@author Sean Sylvis
*/
public class JoglSimpleTest implements GLEventListener
{
protected static final double kFieldOfView = 45;
protected static final double kNearClip = 0.1;
protected static final double kFarClip = 200;

private JFrame mFrame;
private Animator mAnimator;

/**

Constructs a JoglSimpleTest object.
*/
public JoglSimpleTest() throws Exception
{
// Get GL drawing context
GLCanvas vCanvas =
GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities());
vCanvas.addGLEventListener(this);

// Create AWT frame
mFrame = getTestFrame();
mFrame.getContentPane().add(vCanvas);

// Create animation loop object
mAnimator = new Animator(vCanvas);

// Define window-closing event
mFrame.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
close();
}
});

mFrame.show();
mAnimator.start();
}

// inherited comment
public void init(GLDrawable pDrawable)
{
// Set gl and glu contexts
GL gl = pDrawable.getGL();
 printGLInformation(gl);

 // Set color buffer clear color
 gl.glClearColor(1, 1, 1, 0);

 // Default light position is (0,0,1,0) and direction is (0,0,-1)

 // Enable lighting
 gl.glEnable(GL.GL_LIGHTING);
 gl.glEnable(GL.GL_LIGHT0);

 // Enable other parameters
 gl.glEnable(GL.GL_CULL_FACE);
 gl.glEnable(GL.GL_DEPTH_TEST);
}

// inherited comment
public void reshape(
GLDrawable pDrawable,
int x,
int y,
int pWidth,
int pHeight)
{
GL gl = pDrawable.getGL();
GLU glu = pDrawable.getGLU();
 gl.glViewport(0, 0, pWidth, pHeight);

 gl.glMatrixMode(GL.GL_PROJECTION);
 gl.glLoadIdentity();
 glu.gluPerspective(
     kFieldOfView,
     (double)pWidth / pHeight,
     kNearClip,
     kFarClip);
}

// inherited comment
public void display(GLDrawable pDrawable)
{
GL gl = pDrawable.getGL();
GLU glu = pDrawable.getGLU();
 // Clear buffers
 gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);

 // Clear model-view matrix
 gl.glMatrixMode(GL.GL_MODELVIEW);
 gl.glLoadIdentity();

 glu.gluLookAt(0, 0, 10, 0, 0, 0, 0, 1, 0);

 GLUT glut = new GLUT();

 // Set current color to red
 final float[] vRed = { 1, 0, 0 };
 gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT_AND_DIFFUSE, vRed);

 // Draw red sphere
 gl.glPushMatrix();
 glut.glutSolidSphere(glu, 1.0f, 25, 25);
 gl.glPopMatrix();
}

// inherited comment
public void displayChanged(
GLDrawable drawable,
boolean modeChanged,
boolean deviceChanged)
{
}

/**

@return
*/
protected JFrame getTestFrame() throws Exception
{
JFrame vFrame = new JFrame(“Simple Jogl Test”);
vFrame.setSize(600, 400);

return vFrame;
}

/**
*
*/
private void close()
{
mAnimator.stop();
 mFrame.dispose();
}

/**

@param gl
*/
protected static final void printGLInformation(GL gl)
{
System.out.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR));
System.out.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER));
System.out.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION));
System.out.println(
"GL_EXTENSIONS: " + gl.glGetString(GL.GL_EXTENSIONS));
}

/**

@param pArguments
*/
public static void main(String[] pArguments) throws Exception
{
new JoglSimpleTest();
}
}

robnugent · January 6, 2005, 6:21am

Sean,

This looks a lot like the issue I raised a couple of weeks back. They are both happening in GLCanvas.removeNotify() anyhow.

https://jogl.dev.java.net/issues/show_bug.cgi?id=124

Rob

Sylvie · January 6, 2005, 4:34pm

Yeah, it appears to be the same exception. Although mine is deterministic. I just upgraded from Jogl 1.1b04, which didn’t exhibit this behavior. I believe the exception is also thrown when the GLCanvas is removed from the parent JFrame.

Sean

Sylvie · January 6, 2005, 4:37pm

Also, I forgot to mention that I’m using Java 1.4.2.

Sean

Sylvie · January 6, 2005, 6:48pm

The exception is thrown by line 177 in X11Context, which is in the destroyImpl method:

The variable ‘context’ is checked for null, so ‘mostRecentDisplay’ would seem to be suspect.

Now, when the Animator is run, the GLCanvas display method is called and in turn the invokeGL method of GLContext is called. In this method, after the context is made current, the drawing surface is locked, and the GLEventListeners display methods are called, the current context is cleared (glXMakeCurrent with null values) and the drawing surface unlocked. I don’t really know what locking and unlocking the JAWT surface is doing. And I don’t know if it, or clearing the current context, will cause an exception if the context is subsequently freed or destroyed.

Anyone know what’s going on? Thanks for your help.

Sean

kbr · January 6, 2005, 6:48pm

This looks like a bug in JOGL’s context destruction code on X11. Your test works fine on two Windows XP machines I tried but on X11 it crashes with NVidia hardware and reports “Xlib: unexpected async reply (sequence 0x52c)!” with ATI hardware. There is probably not enough synchronization with the AWT down the context destruction paths. Could you please file a bug with the JOGL Issue Tracker and attach your test case? Thanks.

As a workaround, remove the call to mFrame.dispose() in your close() method.

Sylvie · January 6, 2005, 7:54pm

I was going to add it to issue #124 that Rob submitted. However, as an Observer, I cannot add comments to an issue. How do I promote my dev.java.net profile, ssylvis, to comment-submission status?

Sean

kbr · January 6, 2005, 11:16pm

Actually, you weren’t an Observer of the JOGL project. You usually need to request that status using the Membership link on the JOGL home page. I’ve manually added you as an Observer so you should be able to add comments to bug reports now.

Sylvie · January 6, 2005, 11:51pm

Doh!

Thanks. I’ve added my comments and test case to issue #124.

Sean