Hi Petr,
Here is the dump of the Appkit thread and the AWT Thread. As I indicated
earlier our original application does not call invokeAndWait, it uses
invokeLater to make changes to the frame once the frame is created in Appkit
thread. Also I see this issue with SWT 3.7.2 as well as the latest 4.3.
"AWT-EventQueue-0" prio=5 tid=0x00007fcc9b357000 nid=0xbf03 runnable
[0x0000000167cac000]
java.lang.Thread.State: RUNNABLE
at sun.lwawt.macosx.CCursorManager.nativeGetCursorPosition(Native
Method)
at
sun.lwawt.macosx.CCursorManager.getCursorPosition(CCursorManager.java:54)
at sun.lwawt.LWCursorManager.updateCursorImpl(LWCursorManager.java:79)
at sun.lwawt.LWCursorManager.updateCursor(LWCursorManager.java:56)
at
sun.lwawt.LWComponentPeer.updateCursorImmediately(LWComponentPeer.java:852)
at java.awt.Component.updateCursorImmediately(Component.java:3123)
at java.awt.Component.hide(Component.java:1696)
- locked <0x0000000158b7a4e0> (a java.awt.Component$AWTTreeLock)
at java.awt.Window.hide(Window.java:1116)
at sun.awt.EmbeddedFrame.hide(EmbeddedFrame.java:192)
at java.awt.Component.show(Component.java:1653)
at java.awt.Component.setVisible(Component.java:1603)
at java.awt.Window.setVisible(Window.java:1014)
at
com.tibco.cep.studio.ui.overview.OverviewUtils.refreshOverview(OverviewUtils.java:122)
at
com.tibco.cep.studio.ui.overview.OverviewUtils$1.run(OverviewUtils.java:51)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at
java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Locked ownable synchronizers:
- None
"AppKit Thread" prio=5 tid=0x00007fcc9a803800 nid=0x707 waiting for monitor
entry [0x00007fff58cb2000]
java.lang.Thread.State: BLOCKED (on object monitor)
at java.awt.Container.addImpl(Container.java:1077)
- waiting to lock <0x0000000158b7a4e0> (a
java.awt.Component$AWTTreeLock)
at java.awt.Container.add(Container.java:966)
at
com.tomsawyer.canvas.swing.TSBaseSwingCanvas.setInnerCanvas(SourceFile:4258)
at
com.tomsawyer.interactive.swing.TSSwingCanvas.setInnerCanvas(SourceFile:798)
at
com.tomsawyer.canvas.swing.TSBaseSwingCanvas.createGUI(SourceFile:3870)
at com.tomsawyer.canvas.swing.TSBaseSwingCanvas.<init>(SourceFile:138)
at com.tomsawyer.interactive.swing.TSSwingCanvas.<init>(SourceFile:160)
at com.tomsawyer.interactive.swing.TSSwingCanvas.<init>(SourceFile:138)
at
com.tibco.cep.diagramming.drawing.DrawingCanvas.<init>(DrawingCanvas.java:37)
at
com.tibco.cep.diagramming.drawing.DiagramManager.initialize(DiagramManager.java:233)
at
com.tibco.cep.diagramming.drawing.DiagramManager.<init>(DiagramManager.java:196)
at
com.tibco.cep.studio.ui.diagrams.EntityDiagramManager.<init>(EntityDiagramManager.java:135)
at
com.tibco.cep.studio.ui.diagrams.EventDiagramManager.<init>(EventDiagramManager.java:87)
at
com.tibco.cep.studio.ui.editors.events.EventDiagramEditor.getDiagramManager(EventDiagramEditor.java:24)
at
com.tibco.cep.studio.ui.editors.EntityDiagramEditor.addFormPage(EntityDiagramEditor.java:85)
at
com.tibco.cep.studio.ui.editors.EntityDiagramEditor.createUIEditorPage(EntityDiagramEditor.java:77)
at
com.tibco.cep.studio.ui.editors.EntityDiagramEditor.createPages(EntityDiagramEditor.java:54)
at
org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:348)
at
org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:670)
at
org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at
org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313)
at
org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
at
org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
at
org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at
org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
at
org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
at
org.eclipse.ui.internal.PartStack.presentationSelectionChanged(PartStack.java:834)
at org.eclipse.ui.internal.PartStack.access$1(PartStack.java:823)
at org.eclipse.ui.internal.PartStack$1.selectPart(PartStack.java:137)
at
org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:133)
at
org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:269)
at
org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:278)
at
org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder.access$1(DefaultTabFolder.java:1)
at
org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder$2.handleEvent(DefaultTabFolder.java:88)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4128)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1457)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1480)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1465)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1270)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:2746)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1433)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:257)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4128)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1457)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1480)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1465)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1270)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3974)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3613)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Locked ownable synchronizers:
- None
On Nov 18, 2013, at 10:55 PM, Petr Pchelko <petr.pche...@oracle.com> wrote:
> Hello, Viral.
>
> It's known that there are some deadlocks in SWT_AWT bridge on Mac. Here's an
> example:
> https://bugs.openjdk.java.net/browse/JDK-8020165
>
> It would be useful if you also post the dump of an Appkit thread to identify
> your particular case.
>
> The deadlock occurs because AWT is called on the main thread. So the main
> thread get blocked
> on some internal AWT lock, while the EventDispatchThread is trying to perform
> a synchronous operation
> on the main thread. It's not quite obvious how to fix that internally,
> because for the normal AWT application
> we have a strict rule not to acquire locks on the Appkit thread.
>
> For now the workaround could be to wrap all the usages of AWT inside
> invokeLater (except the initial
> SWT_AWT.new_Frame(composite) call). This should fix your deadlock.
>
> Also, which version of SWT are you using? The newer versions are patched so
> that you could not set the
> embeddedFrameClass explicitly. That patch also contains additional changes in
> bridge initialization,
> so the bridge does not work quite well with older versions. This could be
> another reason of your deadlock.
>
> With best regards. Petr.
>
> On 19.11.2013, at 2:51, Viral Barot <vba...@tibco.com> wrote:
>
>> Accessing AWT frame from a thread causes the application to freeze when
>> executed with JRE 7. The AWT frame is created with SWT_AWT bridge.
>>
>> Below is the test case in which call to frame.setVisible(true); from the AWT
>> event dispatching thread does not return.
>>
>> Test Case:
>> import java.awt.Button;
>> import java.awt.Color;
>> import java.awt.event.ActionEvent;
>> import java.awt.event.ActionListener;
>> import java.lang.reflect.InvocationTargetException;
>>
>> import javax.swing.JOptionPane;
>> import javax.swing.SwingUtilities;
>>
>> import org.eclipse.swt.SWT;
>> import org.eclipse.swt.awt.SWT_AWT;
>> import org.eclipse.swt.layout.GridLayout;
>> import org.eclipse.swt.widgets.Display;
>> import org.eclipse.swt.widgets.Shell;
>> import org.eclipse.swt.widgets.Composite;
>>
>> public class Main {
>>
>> public static void main(String[] args) {
>>
>>
>>
>> if(System.getProperty("os.name").toLowerCase().startsWith("mac")){
>> SWT_AWT.embeddedFrameClass = "sun.lwawt.macosx.CViewEmbeddedFrame";
>> }
>>
>>
>> Display display = new Display();
>> Shell shell = new Shell(display);
>> shell.setText("Shell");
>> shell.setSize(200, 200);
>> shell.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_BLUE));
>>
>>
>>
>> final Composite composite = new Composite(shell, SWT.EMBEDDED);
>> GridLayout gridLayout = new GridLayout();
>> gridLayout.numColumns = 1;
>> composite.setLayout(gridLayout);
>> composite.setSize(200,200);
>>
>> composite.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WHITE));
>>
>>
>>
>> final java.awt.Frame frame = SWT_AWT.new_Frame(composite);
>> frame.setVisible(false);
>> frame.setBackground(Color.red);
>> frame.setSize(200, 200);
>> Button button = new Button("Submit");
>> button.addActionListener(new ActionListener() {
>>
>>
>> @Override
>> public void actionPerformed(ActionEvent e) {
>>
>>
>> JOptionPane.showMessageDialog(null, "Hello");
>> }
>> });
>> frame.add(button);
>> frame.doLayout();
>>
>>
>>
>> try {
>> SwingUtilities.invokeAndWait(new Runnable() {
>>
>>
>> @Override
>> public void run() {
>> frame.setVisible(true);
>> }
>> });
>> } catch (InterruptedException e1) {
>> e1.printStackTrace();
>> } catch (InvocationTargetException e1) {
>> e1.printStackTrace();
>> }
>> shell.open();
>>
>>
>>
>> while (!shell.isDisposed()) {
>> if (!display.readAndDispatch())
>> display.sleep();
>> }
>> display.dispose();
>>
>>
>>
>> }
>> }
>>
>> Below is the thread dump for this.
>>
>> "AWT-EventQueue-0" prio=5 tid=0x00007f8d0b087000 nid=0x8703 runnable
>> [0x0000000195e40000]
>> java.lang.Thread.State: RUNNABLE
>> at sun.lwawt.macosx.CCursorManager.nativeGetCursorPosition(Native Method)
>> at sun.lwawt.macosx.CCursorManager.getCursorPosition(CCursorManager.java:54)
>> at sun.lwawt.LWCursorManager.updateCursorImpl(LWCursorManager.java:79)
>> at sun.lwawt.LWCursorManager.updateCursor(LWCursorManager.java:56)
>> at
>> sun.lwawt.LWComponentPeer.updateCursorImmediately(LWComponentPeer.java:852)
>> at java.awt.Component.updateCursorImmediately(Component.java:3123)
>> at java.awt.Component.show(Component.java:1626)
>> - locked <0x0000000160c5b8c8> (a java.awt.Component$AWTTreeLock)
>> at java.awt.Window.show(Window.java:1042)
>> at sun.awt.EmbeddedFrame.show(EmbeddedFrame.java:179)
>> at java.awt.Component.show(Component.java:1651)
>> at java.awt.Component.setVisible(Component.java:1603)
>> at java.awt.Window.setVisible(Window.java:1014)
>> at Main$2.run(Main.java:60)
>> at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:241)
>> at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
>> at java.awt.EventQueue.access$200(EventQueue.java:103)
>> at java.awt.EventQueue$3.run(EventQueue.java:694)
>> at java.awt.EventQueue$3.run(EventQueue.java:692)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at
>> java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
>> at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
>> at
>> java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
>> at
>> java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
>> at
>> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
>> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
>> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
>> at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
>>
>> Locked ownable synchronizers:
>> - None
>>
>> While in the above test case if invokeLater is called instead of
>> invokeAndWait, the test case runs fine. But in my application the
>> invokeLater calls also freeze at same location.
>>
>> This behavoir happens with SWT 3.7.2 as well as 4.3.
>>
>>
>>
>>
>
