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When running locally, I observed the following deadlock: "AWT-EventQueue-1" apache#23 prio=6 os_prio=0 tid=0x00007f3de9bf6800 nid=0x722b2 waiting for monitor entry [0x00007f3dcb4ee000] java.lang.Thread.State: BLOCKED (on object monitor) at java.awt.Component$AccessibleAWTComponent.getLocationOnScreen(Component.java:9494) - waiting to lock <0x00000000e0653ef0> (a java.awt.Component$AWTTreeLock) at javax.swing.JComponent$AccessibleJComponent.getLocationOnScreen(JComponent.java:3663) at javax.swing.text.JTextComponent$AccessibleJTextComponent.<init>(JTextComponent.java:2516) at javax.swing.JEditorPane$AccessibleJEditorPane.<init>(JEditorPane.java:1644) at javax.swing.JEditorPane$JEditorPaneAccessibleHypertextSupport.<init>(JEditorPane.java:1971) at javax.swing.JEditorPane$AccessibleJEditorPaneHTML.getAccessibleText(JEditorPane.java:1703) at org.GNOME.Accessibility.AtkObject.lambda$getTFlagFromObj$0(AtkObject.java:70) at org.GNOME.Accessibility.AtkObject$$Lambda$317/331870887.call(Unknown Source) at org.GNOME.Accessibility.AtkUtil.invokeInSwing(AtkUtil.java:58) at org.GNOME.Accessibility.AtkObject.getTFlagFromObj(AtkObject.java:55) at org.GNOME.Accessibility.AtkWrapper.boundsChanged(Native Method) at org.GNOME.Accessibility.AtkWrapper$3.componentResized(AtkWrapper.java:235) at java.awt.AWTEventMulticaster.componentResized(AWTEventMulticaster.java:159) at java.awt.Component.processComponentEvent(Component.java:6365) at java.awt.Component.processEvent(Component.java:6319) at java.awt.Container.processEvent(Container.java:2239) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2297) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84) at java.awt.EventQueue$4.run(EventQueue.java:733) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74) at java.awt.EventQueue.dispatchEvent(EventQueue.java:730) at org.GNOME.Accessibility.AtkWrapper$6.dispatchEvent(AtkWrapper.java:717) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) "Test worker" #1 prio=5 os_prio=0 tid=0x00007f3de8012000 nid=0x7228f waiting on condition [0x00007f3def695000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000f80386a8> (a java.util.concurrent.FutureTask) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429) at java.util.concurrent.FutureTask.get(FutureTask.java:191) at org.GNOME.Accessibility.AtkUtil.invokeInSwing(AtkUtil.java:68) at org.GNOME.Accessibility.AtkObject.hashCode(AtkObject.java:234) at org.GNOME.Accessibility.AtkWrapper.emitSignal(Native Method) at org.GNOME.Accessibility.AtkWrapper$5.propertyChange(AtkWrapper.java:557) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at javax.accessibility.AccessibleContext.firePropertyChange(AccessibleContext.java:768) at javax.swing.JScrollPane$AccessibleJScrollPane.stateChanged(JScrollPane.java:1506) at javax.swing.JViewport.fireStateChanged(JViewport.java:1369) at javax.swing.JViewport.reshape(JViewport.java:839) at java.awt.Component.setBounds(Component.java:2261) at java.awt.Component.setBounds(Component.java:2405) at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:890) at java.awt.Container.layout(Container.java:1513) at java.awt.Container.doLayout(Container.java:1502) at java.awt.Container.validateTree(Container.java:1698) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validate(Container.java:1633) - locked <0x00000000e0653ef0> (a java.awt.Component$AWTTreeLock) at org.apache.jorphan.gui.ComponentUtil.centerComponentInWindow(ComponentUtil.java:67) at org.apache.jorphan.gui.ComponentUtil.centerComponentInWindow(ComponentUtil.java:54) at org.apache.jmeter.gui.action.SelectTemplatesDialog.init(SelectTemplatesDialog.java:263) at org.apache.jmeter.gui.action.SelectTemplatesDialog.<init>(SelectTemplatesDialog.java:105) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.jmeter.junit.JMeterTest.instantiateClass(JMeterTest.java:512) at org.apache.jmeter.junit.JMeterTest.getObjects(JMeterTest.java:474) at org.apache.jmeter.junit.JMeterTest.suiteSerializableElements(JMeterTest.java:407) at org.apache.jmeter.junit.JMeterTest.suite(JMeterTest.java:149) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.internal.runners.SuiteMethod.testFromSuiteMethod(SuiteMethod.java:35) I hope to get rid of this by placing the code to center the newly created dialog in the AWT thread. I believe the deadlock happens only in our test code, when the dialog is created and instantaneously destroyed.
FSchumacher
added a commit
that referenced
this pull request
May 1, 2023
When running locally, I observed the following deadlock: "AWT-EventQueue-1" #23 prio=6 os_prio=0 tid=0x00007f3de9bf6800 nid=0x722b2 waiting for monitor entry [0x00007f3dcb4ee000] java.lang.Thread.State: BLOCKED (on object monitor) at java.awt.Component$AccessibleAWTComponent.getLocationOnScreen(Component.java:9494) - waiting to lock <0x00000000e0653ef0> (a java.awt.Component$AWTTreeLock) at javax.swing.JComponent$AccessibleJComponent.getLocationOnScreen(JComponent.java:3663) at javax.swing.text.JTextComponent$AccessibleJTextComponent.<init>(JTextComponent.java:2516) at javax.swing.JEditorPane$AccessibleJEditorPane.<init>(JEditorPane.java:1644) at javax.swing.JEditorPane$JEditorPaneAccessibleHypertextSupport.<init>(JEditorPane.java:1971) at javax.swing.JEditorPane$AccessibleJEditorPaneHTML.getAccessibleText(JEditorPane.java:1703) at org.GNOME.Accessibility.AtkObject.lambda$getTFlagFromObj$0(AtkObject.java:70) at org.GNOME.Accessibility.AtkObject$$Lambda$317/331870887.call(Unknown Source) at org.GNOME.Accessibility.AtkUtil.invokeInSwing(AtkUtil.java:58) at org.GNOME.Accessibility.AtkObject.getTFlagFromObj(AtkObject.java:55) at org.GNOME.Accessibility.AtkWrapper.boundsChanged(Native Method) at org.GNOME.Accessibility.AtkWrapper$3.componentResized(AtkWrapper.java:235) at java.awt.AWTEventMulticaster.componentResized(AWTEventMulticaster.java:159) at java.awt.Component.processComponentEvent(Component.java:6365) at java.awt.Component.processEvent(Component.java:6319) at java.awt.Container.processEvent(Container.java:2239) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2297) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84) at java.awt.EventQueue$4.run(EventQueue.java:733) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74) at java.awt.EventQueue.dispatchEvent(EventQueue.java:730) at org.GNOME.Accessibility.AtkWrapper$6.dispatchEvent(AtkWrapper.java:717) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) "Test worker" #1 prio=5 os_prio=0 tid=0x00007f3de8012000 nid=0x7228f waiting on condition [0x00007f3def695000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000f80386a8> (a java.util.concurrent.FutureTask) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429) at java.util.concurrent.FutureTask.get(FutureTask.java:191) at org.GNOME.Accessibility.AtkUtil.invokeInSwing(AtkUtil.java:68) at org.GNOME.Accessibility.AtkObject.hashCode(AtkObject.java:234) at org.GNOME.Accessibility.AtkWrapper.emitSignal(Native Method) at org.GNOME.Accessibility.AtkWrapper$5.propertyChange(AtkWrapper.java:557) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at javax.accessibility.AccessibleContext.firePropertyChange(AccessibleContext.java:768) at javax.swing.JScrollPane$AccessibleJScrollPane.stateChanged(JScrollPane.java:1506) at javax.swing.JViewport.fireStateChanged(JViewport.java:1369) at javax.swing.JViewport.reshape(JViewport.java:839) at java.awt.Component.setBounds(Component.java:2261) at java.awt.Component.setBounds(Component.java:2405) at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:890) at java.awt.Container.layout(Container.java:1513) at java.awt.Container.doLayout(Container.java:1502) at java.awt.Container.validateTree(Container.java:1698) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validateTree(Container.java:1707) at java.awt.Container.validate(Container.java:1633) - locked <0x00000000e0653ef0> (a java.awt.Component$AWTTreeLock) at org.apache.jorphan.gui.ComponentUtil.centerComponentInWindow(ComponentUtil.java:67) at org.apache.jorphan.gui.ComponentUtil.centerComponentInWindow(ComponentUtil.java:54) at org.apache.jmeter.gui.action.SelectTemplatesDialog.init(SelectTemplatesDialog.java:263) at org.apache.jmeter.gui.action.SelectTemplatesDialog.<init>(SelectTemplatesDialog.java:105) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.jmeter.junit.JMeterTest.instantiateClass(JMeterTest.java:512) at org.apache.jmeter.junit.JMeterTest.getObjects(JMeterTest.java:474) at org.apache.jmeter.junit.JMeterTest.suiteSerializableElements(JMeterTest.java:407) at org.apache.jmeter.junit.JMeterTest.suite(JMeterTest.java:149) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.internal.runners.SuiteMethod.testFromSuiteMethod(SuiteMethod.java:35) I hope to get rid of this by placing the code to center the newly created dialog in the AWT thread. I believe the deadlock happens only in our test code, when the dialog is created and instantaneously destroyed.
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