[jbosstools-issues] [JBoss JIRA] (JBIDE-15616) ConcurrentModificationException in CDICoreBuilder

Viacheslav Kabanovich (JIRA) jira-events at lists.jboss.org
Thu Oct 10 19:13:02 EDT 2013 

    [ https://issues.jboss.org/browse/JBIDE-15616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12813277#comment-12813277 ] 

Viacheslav Kabanovich commented on JBIDE-15616:
-----------------------------------------------

Loading of CDI model is implemented through build. That means that build method can be invoked from different threads, one requesting for loaded model, the other performing Eclipse's build. We had already met synchronization problems caused by concurrent access to build, and tried to solve it with improving thread safety. Now, I think, we just cannot allow for concurrent build to happen. One build should wait for the other other.
                
> ConcurrentModificationException in CDICoreBuilder
> -------------------------------------------------
>
>                 Key: JBIDE-15616
>                 URL: https://issues.jboss.org/browse/JBIDE-15616
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: cdi
>    Affects Versions: 4.2.0.Alpha1
>            Reporter: Alexey Kazakov
>            Assignee: Viacheslav Kabanovich
>             Fix For: 4.2.0.Alpha1
>
>
> {code}
> testSwitchingCDICapabilities(org.jboss.tools.cdi.core.test.DependentProjectTest)  Time elapsed: 0.044 sec  <<< ERROR!
> org.eclipse.core.internal.resources.ResourceException: Errors occurred during the build.
> 	at org.eclipse.core.internal.resources.Project$1.run(Project.java:620)
> 	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2345)
> 	at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:597)
> 	at org.eclipse.core.internal.resources.Project.build(Project.java:114)
> 	at org.jboss.tools.cdi.core.test.DependentProjectTest.testSwitchingCDICapabilities(DependentProjectTest.java:338)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at junit.framework.TestCase.runTest(TestCase.java:176)
> 	at junit.framework.TestCase.runBare(TestCase.java:141)
> 	at junit.framework.TestResult$1.protect(TestResult.java:122)
> 	at junit.framework.TestResult.runProtected(TestResult.java:142)
> 	at junit.framework.TestResult.run(TestResult.java:125)
> 	at junit.framework.TestCase.run(TestCase.java:129)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:23)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
> 	at junit.framework.TestResult.runProtected(TestResult.java:142)
> 	at junit.extensions.TestSetup.run(TestSetup.java:27)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
> 	at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
> 	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
> 	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
> 	at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
> 	at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
> 	at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:123)
> 	at org.eclipse.tycho.surefire.osgibooter.OsgiSurefireBooter.run(OsgiSurefireBooter.java:85)
> 	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication$1.run(AbstractUITestApplication.java:35)
> 	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:3717)
> 	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3366)
> 	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
> 	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
> 	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
> 	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
> 	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
> 	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.runApplication(UITestApplication.java:31)
> 	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.run(AbstractUITestApplication.java:114)
> 	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.start(UITestApplication.java:37)
> 	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
> 	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
> 	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
> 	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
> 	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
> 	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
> Contains: Errors running builder 'CDI (Context and Dependency Injection) Builder' on project 'CDITest2'.
> java.util.ConcurrentModificationException
> 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:926)
> 	at java.util.HashMap$KeyIterator.next(HashMap.java:960)
> 	at org.jboss.tools.cdi.internal.core.impl.definition.DefinitionContext.copy(DefinitionContext.java:85)
> 	at org.jboss.tools.cdi.internal.core.impl.definition.DefinitionContext.newWorkingCopy(DefinitionContext.java:359)
> 	at org.jboss.tools.cdi.core.CDICoreBuilder.build(CDICoreBuilder.java:204)
> 	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:726)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
> 	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
> 	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
> 	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
> 	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:394)
> 	at org.eclipse.core.internal.resources.Project$1.run(Project.java:618)
> 	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2345)
> 	at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:597)
> 	at org.eclipse.core.internal.resources.Project.build(Project.java:114)
> 	at org.jboss.tools.cdi.core.test.DependentProjectTest.testSwitchingCDICapabilities(DependentProjectTest.java:338)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at junit.framework.TestCase.runTest(TestCase.java:176)
> 	at junit.framework.TestCase.runBare(TestCase.java:141)
> 	at junit.framework.TestResult$1.protect(TestResult.java:122)
> 	at junit.framework.TestResult.runProtected(TestResult.java:142)
> 	at junit.framework.TestResult.run(TestResult.java:125)
> 	at junit.framework.TestCase.run(TestCase.java:129)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:23)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
> 	at junit.framework.TestResult.runProtected(TestResult.java:142)
> 	at junit.extensions.TestSetup.run(TestSetup.java:27)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
> 	at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
> 	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
> 	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
> 	at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
> 	at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
> 	at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:123)
> 	at org.eclipse.tycho.surefire.osgibooter.OsgiSurefireBooter.run(OsgiSurefireBooter.java:85)
> 	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication$1.run(AbstractUITestApplication.java:35)
> 	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:3717)
> 	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3366)
> 	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
> 	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
> 	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
> 	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
> 	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
> 	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.runApplication(UITestApplication.java:31)
> 	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.run(AbstractUITestApplication.java:114)
> 	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.start(UITestApplication.java:37)
> 	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
> 	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
> 	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
> 	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
> 	at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
> 	at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
> {code}

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