[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[news.eclipse.tools.jdt] Java model event delivery question 
Hi,

I'm having problems writting PDE Junit test for my application and I need some help/advice.

What the application does is to register for java model events and based on these events to update an EMF model.

The testing strategy is to do a change and then in the same trhead check whether the model has been updated.

This ussaly works as the event broadcast is done in the thread performing the java model change. However in some very rare cases the event is delivered in a different thread. Can you point me why sometimes the Java Model Event gets delivered by a different thread. Bellow I'm providing the stack-traces of 1. Normal event delivery i.e. the change and event happens in one and the same thread, 2. Stack traces of the thread doing the change and a stack trace of the thread delivering the event. The event itself is about an oppened project and looks like:

org.eclipse.jdt.core.ElementChangedEvent[source=Java Model[*]: {CHILDREN | CONTENT}
TestEJBProject3_1185799757714 11[*]: {OPENED}
ResourceDelta(/TestEJBProject3_1185799757714 11)[*]]

The validation code executed by the job comes from WTP. I.e. the class ValidationOperation is of package org.eclipse.wst.validation.internal.operations

Thanks,
Hristo

1. StackTrace of a normal event delivery:
Thread [main] (Suspended (exception AssertionFailedError)) Assert.fail(String) line: 47 Assert.assertTrue(String, boolean) line: 20 Assert.assertNotNull(String, Object) line: 217 ModelSynchronizationTests.test_openedWsProjectSynched() line: 183 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25 Method.invoke(Object, Object...) line: 585 ModelSynchronizationTests(TestCase).runTest() line: 164 ModelSynchronizationTests(VerifyingTestCase).runBare() line: 39 ModelSynchronizationTests(MockObjectTestCase).runBareInternal() line: 38 BeforeAfterEnabler.runBare() line: 30 ModelSynchronizationTests(MockObjectTestCase).runBare() line: 44 TestResult$1.protect() line: 106 TestResult.runProtected(Test, Protectable) line: 124 TestResult.run(TestCase) line: 109 ModelSynchronizationTests(TestCase).run(TestResult) line: 120 TestSuite.runTest(Test, TestResult) line: 230 TestSuite.run(TestResult) line: 225 JUnit3TestReference.run(TestExecution) line: 130 TestExecution.run(ITestReference[]) line: 38 RemotePluginTestRunner(RemoteTestRunner).runTests(String[], String, TestExecution) line: 460 RemotePluginTestRunner(RemoteTestRunner).runTests(TestExecution) line: 673 RemotePluginTestRunner(RemoteTestRunner).run() line: 386 RemotePluginTestRunner.main(String[]) line: 58 UITestApplication$1.run() line: 122 RunnableLock.run() line: 35 UISynchronizer(Synchronizer).runAsyncMessages(boolean) line: 123 Display.runAsyncMessages(boolean) line: 3659 Display.readAndDispatch() line: 3296 Workbench.runEventLoop(Window$IExceptionHandler, Display) line: 2389 Workbench.runUI() line: 2353 Workbench.access$4(Workbench) line: 2219 Workbench$4.run() line: 466 Realm.runWithDefault(Realm, Runnable) line: 289 Workbench.createAndRunWorkbench(Display, WorkbenchAdvisor) line: 461 PlatformUI.createAndRunWorkbench(Display, WorkbenchAdvisor) line: 149 IDEApplication.start(IApplicationContext) line: 106 UITestApplication.start(IApplicationContext) line: 52 EclipseAppHandle.run(Object) line: 153 EclipseAppLauncher.runApplication(Object) line: 106 EclipseAppLauncher.start(Object) line: 76 EclipseStarter.run(Object) line: 363 EclipseStarter.run(String[], Runnable) line: 176 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25 Method.invoke(Object, Object...) line: 585 Main.invokeFramework(String[], URL[]) line: 504 Main.basicRun(String[]) line: 443 Main.run(String[]) line: 1169 Main.main(String[]) line: 1144 


2. Stack traces of thread doing the change and thread delivering the event
2.1 Stack trace of thrace doing the change:

Thread [main] (Suspended (breakpoint at line 41 in OnEventModelSynchronizer)) OnEventModelSynchronizer.elementChanged(ElementChangedEvent) line: 41 DeltaProcessor$3.run() line: 1552 SafeRunner.run(ISafeRunnable) line: 37 DeltaProcessor.notifyListeners(IJavaElementDelta, int, IElementChangedListener[], int[], int) line: 1542 DeltaProcessor.firePostChangeDelta(IJavaElementDelta, IElementChangedListener[], int[], int) line: 1377 DeltaProcessor.fire(IJavaElementDelta, int) line: 1353 DeltaProcessor.resourceChanged(IResourceChangeEvent) line: 1916 DeltaProcessingState.resourceChanged(IResourceChangeEvent) line: 368 NotificationManager$2.run() line: 282 SafeRunner.run(ISafeRunnable) line: 37 NotificationManager.notify(ResourceChangeListenerList$ListenerEntry[], IResourceChangeEvent, boolean) line: 276 NotificationManager.broadcastChanges(ElementTree, ResourceChangeEvent, boolean) line: 148 Workspace.broadcastPostChange() line: 311 Workspace.endOperation(ISchedulingRule, boolean, IProgressMonitor) line: 1018 Project(Resource).delete(int, IProgressMonitor) line: 725 Project.delete(boolean, boolean, IProgressMonitor) line: 289 TestProject.dispose() line: 158 ModelSynchronizationTests.test_openedWsProjectSynched() line: 196 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] <unknown receiving type>(NativeMethodAccessorImpl).invoke(Object, Object[]) line: 39 <unknown receiving type>(DelegatingMethodAccessorImpl).invoke(Object, Object[]) line: 25 <unknown receiving type>(Method).invoke(Object, Object...) line: 585 <unknown receiving type>(TestCase).runTest() line: 164 <unknown receiving type>(VerifyingTestCase).runBare() line: 39 <unknown receiving type>(MockObjectTestCase).runBareInternal() line: 38 <unknown receiving type>(BeforeAfterEnabler).runBare() line: 30 <unknown receiving type>(MockObjectTestCase).runBare() line: 44 <unknown receiving type>(TestResult$1).protect() line: 106 TestResult.runProtected(Test, Protectable) line: 124 TestResult.run(TestCase) line: 109 ModelSynchronizationTests(TestCase).run(TestResult) line: 120 TestSuite.runTest(Test, TestResult) line: 230 TestSuite.run(TestResult) line: 225 JUnit3TestReference.run(TestExecution) line: 130 TestExecution.run(ITestReference[]) line: 38 RemotePluginTestRunner(RemoteTestRunner).runTests(String[], String, TestExecution) line: 460 RemotePluginTestRunner(RemoteTestRunner).runTests(TestExecution) line: 673 RemotePluginTestRunner(RemoteTestRunner).run() line: 386 RemotePluginTestRunner.main(String[]) line: 58 UITestApplication$1.run() line: 122 RunnableLock.run() line: 35 UISynchronizer(Synchronizer).runAsyncMessages(boolean) line: 123 Display.runAsyncMessages(boolean) line: 3659 Display.readAndDispatch() line: 3296 Workbench.runEventLoop(Window$IExceptionHandler, Display) line: 2389 Workbench.runUI() line: 2353 Workbench.access$4(Workbench) line: 2219 Workbench$4.run() line: 466 Realm.runWithDefault(Realm, Runnable) line: 289 Workbench.createAndRunWorkbench(Display, WorkbenchAdvisor) line: 461 PlatformUI.createAndRunWorkbench(Display, WorkbenchAdvisor) line: 149 IDEApplication.start(IApplicationContext) line: 106 UITestApplication.start(IApplicationContext) line: 52 EclipseAppHandle.run(Object) line: 153 EclipseAppLauncher.runApplication(Object) line: 106 EclipseAppLauncher.start(Object) line: 76 EclipseStarter.run(Object) line: 363 EclipseStarter.run(String[], Runnable) line: 176 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25 Method.invoke(Object, Object...) line: 585 Main.invokeFramework(String[], URL[]) line: 504 Main.basicRun(String[]) line: 443 Main.run(String[]) line: 1169 Main.main(String[]) line: 1144 2.2 Stack trace of thread delivering the event:
Thread [Worker-8] (Suspended (breakpoint at line 55 in OnEventModelSynchronizer)) OnEventModelSynchronizer.elementChanged(ElementChangedEvent) line: 55 DeltaProcessor$3.run() line: 1552 SafeRunner.run(ISafeRunnable) line: 37 DeltaProcessor.notifyListeners(IJavaElementDelta, int, IElementChangedListener[], int[], int) line: 1542 DeltaProcessor.firePostChangeDelta(IJavaElementDelta, IElementChangedListener[], int[], int) line: 1377 DeltaProcessor.fire(IJavaElementDelta, int) line: 1353 DeltaProcessor.resourceChanged(IResourceChangeEvent) line: 1916 DeltaProcessingState.resourceChanged(IResourceChangeEvent) line: 368 NotificationManager$2.run() line: 282 SafeRunner.run(ISafeRunnable) line: 37 NotificationManager.notify(ResourceChangeListenerList$ListenerEntry[], IResourceChangeEvent, boolean) line: 276 NotificationManager.broadcastChanges(ElementTree, ResourceChangeEvent, boolean) line: 148 Workspace.broadcastPostChange() line: 311 Workspace.endOperation(ISchedulingRule, boolean, IProgressMonitor) line: 1018 Workspace.run(IWorkspaceRunnable, ISchedulingRule, int, IProgressMonitor) line: 1806 ValidationOperation$1.done(IJobChangeEvent) line: 1767 JobListeners$3.notify(IJobChangeListener, IJobChangeEvent) line: 39 JobListeners.doNotify(JobListeners$IListenerDoit, IJobChangeEvent) line: 112 JobListeners.done(Job, IStatus, boolean) line: 152 JobManager.endJob(InternalJob, IStatus, boolean) line: 550 WorkerPool.endJob(InternalJob, IStatus) line: 105 Worker.run() line: 71