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Re: [gl4java-usergroup] GL4Java hanging at startup
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From: Jacob M. <ja...@ma...> - 2002-02-16 14:19:48
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Hi Elias,
Nice to see that you are giving gl4java a try :)
What do you mean when you say your code hangs?
Does the first frame show or are nothing shown at all?
Be sure to set a layout before setVisible().
Also, calling pack() after
setVisible() does not make sense. Here is a snippet
from the code I use (I have no crash trouble).
(The frame is a Swing JFrame in the case below)
-------
f.getContentPane().setLayout(new BorderLayout());
f.pack();
Insets i = f.getInsets();
f.setBounds(0, 0, 640 + i.right + i.left, 480 + i.bottom + i.top);
Dimension d = f.getSize();
GLCapabilities caps = new GLCapabilities();
GLAnimCanvas canvas = GLDrawableFactory.getFactory()
.createGLAnimCanvas(caps, d.width, d.height);
canvas.addGLEventListener(demo); // my event handler
canvas.setUseRepaint(false);
canvas.setUseFpsSleep(false);
canvas.setUseYield(false);
canvas.requestFocus();
f.getContentPane().add("Center", canvas);
canvas.start();
f.setVisible(true);
-------
I hope this helps,
Jacob
----- Original Message -----
From: "Elias Naur" <na...@od...>
To: <gl4...@li...>
Sent: Saturday, February 16, 2002 15:01
Subject: [gl4java-usergroup] GL4Java hanging at startup
> Hi,
>
> I've recently begun using GL4Java, but I have run into problems with Gl4Java
> sometimes (~ every 10 times) hanging at startup, my startup code looks like
> this
>
> frame.setVisible(true);
> GLCapabilities caps = new GLCapabilities(true, false, true, 0, 0, 0,
> 0, 0);
> canvas = GLDrawableFactory.getFactory().createGLAnimCanvas(caps,
> Globals.VIEW_WIDTH, Globals.VIEW_HEIGHT);
> canvas.setUseRepaint(false);
> canvas.setUseFpsSleep(false);
> canvas.setUseYield(false);
> canvas.addGLEventListener(renderer);
> frame.add(canvas, BorderLayout.CENTER);
> frame.pack();
>
> canvas.requestFocus();
> canvas.start();
>
> If I move the line frame.sertVisible(true) further down (e.g. after
> canvas.start()), it hangs less often. the thread dump while hanging looks
> like this:Full thread dump Java HotSpot(TM) Client VM (1.4.0-b92 mixed mode):
>
> "AWT-EventQueue-0" prio=1 tid=0x0x81d2cf0 nid=0x2577 runnable
> [4cee6000..4cee686c]
> at gl4java.GLContext.openOpenGLNative(Native Method)
> at gl4java.GLContext.gljInit(GLContext.java:1996)
> - locked <0x441426a0> (a gl4java.GLContext)
> at gl4java.GLContext.createGLContext(GLContext.java:1942)
> at gl4java.GLContext.<init>(GLContext.java:1161)
> at gl4java.GLContext.<init>(GLContext.java:1251)
> at gl4java.awt.GLCanvas.paint(GLCanvas.java:444)
> at sun.awt.RepaintArea.paint(RepaintArea.java:180)
> at sun.awt.motif.MComponentPeer.handleEvent(MComponentPeer.java:339)
> at java.awt.Component.dispatchEventImpl(Component.java:3586)
> at java.awt.Component.dispatchEvent(Component.java:3367)
> at java.awt.EventQueue.dispatchEvent(EventQueue.java:445)
> at
>
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:1
90)
> at
>
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144
)
> at
> java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
> at
> java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130)
> at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)
>
> "Thread-1" daemon prio=1 tid=0x0x81d53b8 nid=0x2576 waiting on monitor
> [4ce65000..4ce6586c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x44170450> (a java.util.TaskQueue)
> at java.util.TimerThread.mainLoop(Timer.java:429)
> - locked <0x44170450> (a java.util.TaskQueue)
> at java.util.TimerThread.run(Timer.java:382)
>
> "AWT-Motif" daemon prio=1 tid=0x0x81c2ef8 nid=0x2575 waiting for monitor
> entry [4cde4000..4cde486c]
> at sun.awt.motif.MToolkit.run(Native Method)
> at java.lang.Thread.run(Thread.java:536)
>
> "AWT-Shutdown" prio=1 tid=0x0x819d550 nid=0x2574 waiting on monitor
> [4cd63000..4cd6386c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x4461a478> (a java.lang.Object)
> at java.lang.Object.wait(Object.java:426)
> at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:259)
> - locked <0x4461a478> (a java.lang.Object)
> at java.lang.Thread.run(Thread.java:536)
>
> "Signal Dispatcher" daemon prio=1 tid=0x0x807b880 nid=0x2572 waiting on
> monitor [0..0]
>
> "Finalizer" daemon prio=1 tid=0x0x8074478 nid=0x256f waiting on monitor
> [4c2f2000..4c2f286c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x445ef168> (a java.lang.ref.ReferenceQueue$Lock)
> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
> - locked <0x445ef168> (a java.lang.ref.ReferenceQueue$Lock)
> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
> at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
>
> "Reference Handler" daemon prio=1 tid=0x0x8073830 nid=0x256e waiting on
> monitor [4c271000..4c27186c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x445ef1d0> (a java.lang.ref.Reference$Lock)
> at java.lang.Object.wait(Object.java:426)
> at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:113)
> - locked <0x445ef1d0> (a java.lang.ref.Reference$Lock)
>
> "main" prio=1 tid=0x0x8051558 nid=0x256b waiting for monitor entry
> [bfffd000..bfffd718]
> at sun.awt.motif.MComponentPeer.pReshape(Native Method)
> at sun.awt.motif.MComponentPeer.setBounds(MComponentPeer.java:739)
> at java.awt.Component.reshape(Component.java:1685)
> - locked <0x44619fb0> (a java.awt.Component$AWTTreeLock)
> at java.awt.Component.setBounds(Component.java:1644)
> at java.awt.BorderLayout.layoutContainer(BorderLayout.java:683)
> - locked <0x44619fb0> (a java.awt.Component$AWTTreeLock)
> at java.awt.Container.layout(Container.java:835)
> at java.awt.Container.doLayout(Container.java:825)
> at java.awt.Container.validateTree(Container.java:903)
> at java.awt.Container.validate(Container.java:878)
> - locked <0x44619fb0> (a java.awt.Component$AWTTreeLock)
> at java.awt.Window.pack(Window.java:418)
> at life3d.Main.run(Main.java:73)
> at life3d.Main.main(Main.java:102)
>
> "VM Thread" prio=1 tid=0x0x80706b0 nid=0x256d runnable
>
> "VM Periodic Task Thread" prio=1 tid=0x0x807a390 nid=0x2570 waiting on monitor
> "Suspend Checker Thread" prio=1 tid=0x0x807ae08 nid=0x2571 runnable
>
> it looks like that every time (hang in openOpenGLNative())
>
> I use red hat linux 7.2 with 2.4.17 kernel and nvidia drivers 2314. JVM
> version is 1.4.0 and GL4Java version is 2.8.2.0
>
> someone has advice? how can I pinpoint it even further? i.e. how can I
> easily tell in which line in openOpenGLNative my app hangs?
>
> - Elias Naur
>
>
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