application hangs (deadlo

From	"Niva" <niva@THRWHITE.remove-dii-this>
Subject	application hangs (deadlo
Message-ID	<1165255300.770450.45620@f1g2000cwa.googlegroups.com> (permalink)
Newsgroups	comp.lang.java.gui
Date	2011-04-27 15:26 +0000
Organization	TDS.net

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  To: comp.lang.java.gui
I use the [AWT-Windows] thread to process a native requests from our
code using JNI, on a swing application (a simple gui I wrote) - which
works great except it sometimes hangs - on specific places. I suspend
the relevant threads to examine the stack and find out the following
(for example)

________________________________________
Thread [AWT-Windows] (Suspended)
	Object.wait(long) line: not available [native method]
	EventQueue$1AWTInvocationLock(Object).wait() line: not available
	EventQueue.invokeAndWait(Runnable) line: not available
	SwingUtilities.invokeAndWait(Runnable) line: not available
	Communicator.execute(byte[]) line: 109	                      <== our
class
	WToolkit.eventLoop() line: not available [native method]
	WToolkit.run() line: not available
	Thread.run() line: not available
________________________________________


a short look on EventQueue thread shows:

________________________________________
Thread [AWT-EventQueue-0] (Suspended)
	WComponentPeer._requestFocus(Component, boolean, boolean, long) line:
not
                          available [native method] [local variables
unavailable]
	WFramePeer(WComponentPeer).requestFocus(Component, boolean, boolean,
long)
                          line: not available
	JTabbedPane(Component).requestFocusHelper(boolean, boolean) line: not
available
	JTabbedPane(Component).requestFocusInWindow() line: not available
	JTabbedPane(JComponent).requestFocusInWindow() line: not available
	DefaultKeyboardFocusManager.dispatchEvent(AWTEvent) line: not
available
	NivasApplication(Component).dispatchEventImpl(AWTEvent) line: not
available
	NivasApplication(Container).dispatchEventImpl(AWTEvent) line: not
available
	NivasApplication(Window).dispatchEventImpl(AWTEvent) line: not
available
	NivasApplication(Component).dispatchEvent(AWTEvent) line: not
available
	EventQueue.dispatchEvent(AWTEvent) line: not available
	SequencedEvent.dispatch() line: not available
	EventQueue.dispatchEvent(AWTEvent) line: not available
	EventDispatchThread.pumpOneEventForHierarchy(int, Component) line: not
available
	EventDispatchThread.pumpEventsForHierarchy(int, Conditional,
Component) line: not available
	EventDispatchThread.pumpEvents(int, Conditional) line: not available
	EventDispatchThread.pumpEvents(Conditional) line: not available
	EventDispatchThread.run() line: not available
________________________________________


other places it gets stuck on is "getComponents", "enableNativeIME",
"getLightHeavyWeightCursor" etc.

Im sure that to the eye of an expert it all makes sense. we call lock
on eventQueue which wait for something to happen, but where am I going
wrong? why doenst the event happen? are we holding something it needs?

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application hangs (deadlo "Niva" <niva@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
  Re: application hangs (de "Thomas Hawtin" <thomas.hawtin@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000

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