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[cdt-dev] indexer stops working

Hi
I have a problem with my plugin that the indexer stops working from time to time. I get no errors in the error logs but in the progress monitor I see the indexer which makes no progress. When it happens in a multi project workspace I can recreate the index for all projects except for the offending project.
I can cancel the offending indexing problem which again reports no problem.
If I close the project I get the error log below.
I'm personally suspecting my indexing listener to be the root cause.
I have 2 listeners. A indexChangeListener and a IndexStateListener. (code: https://github.com/jantje/arduino-eclipse-plugin/blob/master/it.baeyens.arduino.core/src/it/baeyens/arduino/ui/Activator.java#L65)
In the indexChangeListener I log all projects that have a changed index.
In the index Statelistener I wait for the indexer to be idle and when Idle I query the indexer to do project changes for all changed projects. (https://github.com/jantje/arduino-eclipse-plugin/blob/master/it.baeyens.arduino.core/src/it/baeyens/arduino/listeners/IndexerListener.java)

This is the code that queries the indexer.
https://github.com/jantje/arduino-eclipse-plugin/blob/master/it.baeyens.arduino.core/src/it/baeyens/arduino/tools/Libraries.java#L241

Any advice on how to progress this issue is welcomed.
Best regards
Jantje





org.eclipse.core.internal.resources.ResourceException: Resource '/test' is not open. at org.eclipse.core.internal.resources.Project.checkAccessible(Project.java:143) at org.eclipse.core.internal.resources.Project.hasNature(Project.java:521) at it.baeyens.arduino.ui.ExplorerLabelDecorator.decorateText(ExplorerLabelDecorator.java:49) at org.eclipse.ui.internal.decorators.FullDecoratorDefinition.decorateText(FullDecoratorDefinition.java:136) at org.eclipse.ui.internal.decorators.FullTextDecoratorRunnable.run(FullTextDecoratorRunnable.java:27)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.decorators.DecoratorManager.safeDecorateText(DecoratorManager.java:586) at org.eclipse.ui.internal.decorators.DecoratorManager.decorateText(DecoratorManager.java:538) at org.eclipse.ui.internal.decorators.DecoratorManager$ManagedWorkbenchLabelDecorator.decorateText(DecoratorManager.java:163) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.getStyledText(DecoratingStyledCellLabelProvider.java:207) at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.update(DelegatingStyledCellLabelProvider.java:106) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.update(DecoratingStyledCellLabelProvider.java:136) at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:154) at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:949) at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:114)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1029) at org.eclipse.ui.navigator.CommonViewer.doUpdateItem(CommonViewer.java:399) at org.eclipse.ui.internal.navigator.resources.ResourceToItemsMapper.updateItem(ResourceToItemsMapper.java:150) at org.eclipse.ui.internal.navigator.resources.ResourceToItemsMapper.objectChanged(ResourceToItemsMapper.java:138) at org.eclipse.ui.navigator.CommonViewer.handleLabelProviderChanged(CommonViewer.java:224) at org.eclipse.jface.viewers.ContentViewer$1.labelProviderChanged(ContentViewer.java:99) at org.eclipse.jface.viewers.BaseLabelProvider$1.run(BaseLabelProvider.java:72)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.BaseLabelProvider.fireLabelProviderChanged(BaseLabelProvider.java:69) at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider$1.labelProviderChanged(DecoratingStyledCellLabelProvider.java:78) at org.eclipse.ui.internal.decorators.DecoratorManager$1.run(DecoratorManager.java:446)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.decorators.DecoratorManager.fireListener(DecoratorManager.java:443) at org.eclipse.ui.internal.decorators.DecorationScheduler$3.runInUIThread(DecorationScheduler.java:536)
    at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:97)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3794)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3433)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
    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:497)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1488)


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