[jboss-jira] [JBoss JIRA] Closed: (JBCL-26) Deadlock problem between unregisterClassLoader and normal classloader usage
Adrian Brock (JIRA)
jira-events at lists.jboss.org
Mon Jul 28 13:58:46 EDT 2008
[ https://jira.jboss.org/jira/browse/JBCL-26?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrian Brock closed JBCL-26.
----------------------------
Resolution: Done
> Deadlock problem between unregisterClassLoader and normal classloader usage
> ---------------------------------------------------------------------------
>
> Key: JBCL-26
> URL: https://jira.jboss.org/jira/browse/JBCL-26
> Project: JBoss ClassLoader
> Issue Type: Bug
> Components: ClassLoaderSystem
> Affects Versions: JBossCL.2.0.0.Beta12
> Reporter: Adrian Brock
> Assignee: Adrian Brock
> Fix For: JBossCL.2.0.0.CR1
>
>
> There's a deadlock problem between ClassLoaderDomain.unregisterClassLoader()
> and normal classloader usage, as shown by this thread dump during SHUTDOWN:
> Found one Java-level deadlock:
> =============================
> "JBoss Shutdown Hook":
> waiting to lock monitor 0x09314444 (object 0xaef03488, a org.jboss.classloader.spi.base.BaseClassLoader),
> which is held by "main"
> "main":
> waiting to lock monitor 0x09314484 (object 0xaef029b8, a org.jboss.classloader.spi.ClassLoaderDomain),
> which is held by "JBoss Shutdown Hook"
> Java stack information for the threads listed above:
> ===================================================
> "JBoss Shutdown Hook":
> at org.jboss.mx.server.MBeanServerImpl.unregisterMBean(MBeanServerImpl.java:395)
> at org.jboss.classloader.spi.ClassLoaderDomain.unregisterClassLoaderMBean(ClassLoaderDomain.java:685)
> at org.jboss.classloader.spi.ClassLoaderDomain.beforeUnregisterClassLoader(ClassLoaderDomain.java:643)
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.unregisterClassLoader(BaseClassLoaderDomain.java:1236)
> - locked <0xaef029b8> (a org.jboss.classloader.spi.ClassLoaderDomain)
> at org.jboss.classloader.spi.base.BaseClassLoaderSystem.unregisterClassLoaderPolicy(BaseClassLoaderSystem.java:147)
> at org.jboss.classloader.spi.ClassLoaderSystem.unregisterClassLoaderPolicy(ClassLoaderSystem.java:470)
> at org.jboss.classloading.spi.dependency.policy.ClassLoaderPolicyModule.removeClassLoader(ClassLoaderPolicyModule.java:147)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:56)
> at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:110)
> at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
> at org.jboss.beans.info.plugins.AbstractBeanInfo.invoke(AbstractBeanInfo.java:300)
> at org.jboss.kernel.plugins.dependency.AbstractKernelControllerContext.invoke(AbstractKernelControllerContext.java:279)
> at org.jboss.kernel.plugins.dispatch.InvokeDispatchHelper.invoke(InvokeDispatchHelper.java:104)
> at org.jboss.kernel.plugins.dependency.InstallsAwareAction.doUninstalls(InstallsAwareAction.java:214)
> at org.jboss.kernel.plugins.dependency.InstallsAwareAction.doUninstalls(InstallsAwareAction.java:170)
> at org.jboss.kernel.plugins.dependency.InstallsAwareAction.uninstallAction(InstallsAwareAction.java:156)
> at org.jboss.kernel.plugins.dependency.InstallsAwareAction.uninstallAction(InstallsAwareAction.java:42)
> at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleUninstallAction(SimpleControllerContextAction.java:79)
> at org.jboss.dependency.plugins.action.AccessControllerContextAction.uninstall(AccessControllerContextAction.java:131)
> at org.jboss.dependency.plugins.AbstractControllerContextActions.uninstall(AbstractControllerContextActions.java:58)
> at org.jboss.dependency.plugins.AbstractControllerContext.uninstall(AbstractControllerContext.java:354)
> at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:1406)
> at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1064)
> at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:986)
> at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:513)
> at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:470)
> at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.undeployBean(AbstractKernelDeployer.java:406)
> at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.undeployBeans(AbstractKernelDeployer.java:385)
> at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.undeploy(AbstractKernelDeployer.java:162)
> at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.undeploy(BasicKernelDeployer.java:88)
> at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.undeploy(BasicXMLDeployer.java:95)
> at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.shutdown(BasicKernelDeployer.java:102)
> at org.jboss.bootstrap.microcontainer.ServerImpl.doShutdown(ServerImpl.java:165)
> at org.jboss.bootstrap.AbstractServerImpl.shutdownServer(AbstractServerImpl.java:523)
> at org.jboss.bootstrap.AbstractServerImpl$ShutdownHook.run(AbstractServerImpl.java:827)
> "main":
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.getClassLoaderSystem(BaseClassLoaderDomain.java:103)
> - waiting to lock <0xaef029b8> (a org.jboss.classloader.spi.ClassLoaderDomain)
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.findLoader(BaseClassLoaderDomain.java:246)
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:190)
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1009)
> at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:728)
> at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:372)
> - locked <0xaef03488> (a org.jboss.classloader.spi.base.BaseClassLoader)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
> - locked <0xaef03488> (a org.jboss.classloader.spi.base.BaseClassLoader)
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:63)
> at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:502)
> at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:462)
> at java.security.AccessController.doPrivileged(Native Method)
> at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:460)
> - locked <0xaef03488> (a org.jboss.classloader.spi.base.BaseClassLoader)
> at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:437)
> at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:134)
> at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:131)
> at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:452)
> at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:254)
> at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:148)
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:196)
> at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1009)
> at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:728)
> at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:372)
> - locked <0xaef03488> (a org.jboss.classloader.spi.base.BaseClassLoader)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
> - locked <0xaef03488> (a org.jboss.classloader.spi.base.BaseClassLoader)
> at org.jboss.system.microcontainer.ServiceControllerContextActions.getLifecycleOnly(ServiceControllerContextActions.java:75)
> at org.jboss.system.microcontainer.ServiceControllerContext.<init>(ServiceControllerContext.java:88)
> at org.jboss.system.microcontainer.ServiceControllerContext.<init>(ServiceControllerContext.java:76)
> at org.jboss.system.ServiceController.postRegister(ServiceController.java:612)
> at org.jboss.mx.server.AbstractMBeanInvoker.invokePostRegister(AbstractMBeanInvoker.java:974)
> at org.jboss.mx.server.AbstractMBeanInvoker.postRegister(AbstractMBeanInvoker.java:681)
> at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:338)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
> at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
> at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:138)
> at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
> at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:140)
> at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
> at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
> at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
> at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1431)
> at java.security.AccessController.doPrivileged(Native Method)
> at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1426)
> at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:376)
> at org.jboss.system.server.jmx.JMXKernel.start(JMXKernel.java:191)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:56)
> at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:110)
> at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
> at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
> at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:45)
> at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:109)
> at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:70)
> at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221)
> at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54)
> at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42)
> at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
> at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
> at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
> at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
> at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1392)
> at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:784)
> at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:912)
> at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:834)
> at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:624)
> at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:442)
> at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBean(AbstractKernelDeployer.java:331)
> at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBeans(AbstractKernelDeployer.java:309)
> at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deploy(AbstractKernelDeployer.java:130)
> at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.deploy(BasicKernelDeployer.java:76)
> at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:88)
> at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:158)
> at org.jboss.bootstrap.microcontainer.ServerImpl.doStart(ServerImpl.java:117)
> at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:398)
> at org.jboss.Main.boot(Main.java:209)
> at org.jboss.Main$1.run(Main.java:544)
> at java.lang.Thread.run(Thread.java:595)
> Found 1 deadlock.
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