Jacco van Weert created NETBEANS-992:
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             Summary: Exception when singlestep debugging
                 Key: NETBEANS-992
                 URL: https://issues.apache.org/jira/browse/NETBEANS-992
             Project: NetBeans
          Issue Type: Bug
            Reporter: Jacco van Weert


java.lang.AssertionError: Debugger lock taken in AWT Event Queue!
 at 
org.netbeans.modules.debugger.jpda.JPDADebuggerImpl$DebuggerReentrantReadWriteLock$DebuggerReadLock.lock(JPDADebuggerImpl.java:2675)
 at 
org.netbeans.modules.debugger.jpda.models.JPDAThreadImpl$ThreadReentrantReadWriteLock$ThreadWriteLock.lock(JPDAThreadImpl.java:2555)
 at 
org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.invokeMethod(JPDADebuggerImpl.java:1066)
 at 
org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.invokeMethod(JPDADebuggerImpl.java:1008)
 at 
org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.getToStringValue(AbstractObjectVariable.java:496)
 at 
org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.getToStringValue(AbstractObjectVariable.java:460)
 at 
org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.getToStringValue(AbstractObjectVariable.java:424)
 at 
org.netbeans.modules.debugger.jpda.ui.models.VariablesTableModel.getValueAt(VariablesTableModel.java:108)
 at 
org.netbeans.spi.viewmodel.Models$DelegatingTableModel.getValueAt(Models.java:2249)
 at 
org.netbeans.modules.debugger.jpda.ui.models.NumericDisplayFilter.getValueAt(NumericDisplayFilter.java:112)
 at 
org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1439)
 at 
org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.getValueAt(VariablesTreeModelFilter.java:530)
 at 
org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1439)
 at 
org.netbeans.modules.debugger.jpda.ui.models.PendingActionsFilter.getValueAt(PendingActionsFilter.java:108)
 at 
org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1439)
 at 
org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1441)
 at 
org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1441)
 at org.netbeans.spi.viewmodel.Models$CompoundModel.getValueAt(Models.java:4566)
 at 
org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.updateShortDescription(TreeModelNode.java:2102)
 at 
org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.getShortDescription(TreeModelNode.java:2084)
 at 
org.openide.explorer.view.SheetCell.getTableCellRendererComponent(SheetCell.java:276)
 at 
org.openide.explorer.view.SheetCell$OutlineSheetCell.getTableCellRendererComponent(SheetCell.java:737)
 at 
org.netbeans.modules.viewmodel.DelegatingCellRenderer.getTableCellRendererComponent(DelegatingCellRenderer.java:66)
 at javax.swing.JTable.prepareRenderer(JTable.java:5723)
 at org.netbeans.swing.outline.Outline.getToolTipText(Outline.java:393)
 at 
javax.swing.ToolTipManager$insideTimerAction.actionPerformed(ToolTipManager.java:663)
 at javax.swing.Timer.fireActionPerformed(Timer.java:313)
 at javax.swing.Timer$DoPostEvent.run(Timer.java:245)
 at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
 at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
 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:80)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
 at 
org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] 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)



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