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I just got the following UI freeze Property.isDeclaringPluginActive calls into Platform.getBundle(fConfigElement.getContributor().getName()) which call InternalPlatform.getDefault().getBundle(symbolicName) and that seems to reread the call bundles all the time. Maybe we could introduce some caching? Stack Trace at java.util.stream.Sink$ChainedReference.end(Sink.java:258) at java.util.stream.Sink$ChainedReference.end(Sink.java:258) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:498) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:487) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:561) at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:267) at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:505) at org.eclipse.core.internal.runtime.InternalPlatform.getBundles(InternalPlatform.java:243) at org.eclipse.core.internal.runtime.InternalPlatform.getBundle(InternalPlatform.java:222) at org.eclipse.core.runtime.Platform.getBundle(Platform.java:1424) at org.eclipse.core.expressions.PropertyTester.isDeclaringPluginActive(PropertyTester.java:113) at org.eclipse.core.internal.expressions.Property.isDeclaringPluginActive(Property.java:51) at org.eclipse.core.internal.expressions.Property.isValidCacheEntry(Property.java:58) at org.eclipse.core.internal.expressions.TypeExtensionManager.getProperty(TypeExtensionManager.java:107) at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:100) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:55) at org.eclipse.core.internal.expressions.AdaptExpression.evaluate(AdaptExpression.java:118) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateOr(CompositeExpression.java:69) at org.eclipse.core.internal.expressions.OrExpression.evaluate(OrExpression.java:25) at org.eclipse.ui.internal.navigator.NavigatorPlugin$Evaluator.run(NavigatorPlugin.java:245) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.navigator.CustomAndExpression.evaluate(CustomAndExpression.java:74) at org.eclipse.ui.internal.navigator.NavigatorPlugin$Evaluator.run(NavigatorPlugin.java:245) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.navigator.NavigatorPlugin.safeEvaluate(NavigatorPlugin.java:260) at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptor.isTriggerPoint(NavigatorContentDescriptor.java:417) at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.findDescriptors(NavigatorContentDescriptorManager.java:176) at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.findDescriptorsForTriggerPoint(NavigatorContentDescriptorManager.java:130) at org.eclipse.ui.internal.navigator.NavigatorContentService.findDescriptorsByTriggerPoint(NavigatorContentService.java:773) at org.eclipse.ui.internal.navigator.NavigatorContentService.findContentExtensionsByTriggerPoint(NavigatorContentService.java:621) at org.eclipse.ui.internal.navigator.NavigatorContentService.findContentExtensionsByTriggerPoint(NavigatorContentService.java:602) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.hasChildren(NavigatorContentServiceContentProvider.java:389) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.hasChildren(NavigatorContentServiceContentProvider.java:437) at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:2159) at org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer.java:546) at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:2197) at org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(AbstractTreeViewer.java:2881) at org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.java:794) at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:849) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:826) at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:604) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:774) at org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(AbstractTreeViewer.java:1594) at org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:780) at org.eclipse.jface.viewers.AbstractTreeViewer.lambda$1(AbstractTreeViewer.java:1579) at org.eclipse.jface.viewers.AbstractTreeViewer$$Lambda$418.0000000000000000.run(Unknown Source) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1397) at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:363) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1358) at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1573) at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:282) at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1631) at org.eclipse.ui.navigator.CommonNavigator.createPartControl(CommonNavigator.java:205) at org.eclipse.ui.navigator.resources.ProjectExplorer.createPartControl(ProjectExplorer.java:161) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:154) at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.createPartControl(CompatibilityView.java:155) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:361) 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.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:1002) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:967) at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(InjectorImpl.java:139) at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:408) at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:331) at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:202) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:91) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:60) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:42) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:132) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:1002) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:662) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.run(PartRenderingEngine.java:547) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:531) at org.eclipse.e4.ui.workbench.renderers.swt.ElementReferenceRenderer.createWidget(ElementReferenceRenderer.java:73) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:1002) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:662) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:768) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:739) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:733) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:717) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl$1.handleEvent(PartServiceImpl.java:112) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38) at org.eclipse.e4.ui.services.internal.events.UIEventHandler$$Lambda$192.0000000000000000.run(Unknown Source) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:236) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:146) at org.eclipse.swt.widgets.Display.syncExec(Display.java:5830) at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:219) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:205) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:203) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:234) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:132) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:63) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElementGen(ElementContainerImpl.java:170) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:188) at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.lambda$3(StackRenderer.java:1061) at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer$$Lambda$278.0000000000000000.accept(Unknown Source) at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5720) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1423) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1449) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1432) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1221) at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3191) at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1876) at org.eclipse.swt.custom.CTabFolder.lambda$0(CTabFolder.java:330) at org.eclipse.swt.custom.CTabFolder$$Lambda$269.0000000000000000.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5720) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1423) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4988) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4481) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:660) at org.eclipse.ui.internal.Workbench$$Lambda$129.0000000000000000.run(Unknown Source) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:559) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) 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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1447) at org.eclipse.equinox.launcher.Main.main(Main.java:1420)
