[jbosstools-issues] [JBoss JIRA] (JBIDE-23757) Thread deadlock when starting Eclipse
Rob Stryker (JIRA)
issues at jboss.org
Wed Jan 18 14:09:00 EST 2017
[ https://issues.jboss.org/browse/JBIDE-23757?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rob Stryker resolved JBIDE-23757.
---------------------------------
Resolution: Done
* c045711 - JBIDE-23757 - fix deadlock in UnitedServerManagerListener (again) (65 seconds ago) <Rob Stryker>
My tracing through has shown that this fixes the deadlock. By ensuring that further listeners are added in a job, the start() method doesn't block and completes, allowing the server view to release it's lock on the given servers, which then allows the UnitedServerManagerListener's spawned thread to complete afterwards.
> Thread deadlock when starting Eclipse
> -------------------------------------
>
> Key: JBIDE-23757
> URL: https://issues.jboss.org/browse/JBIDE-23757
> Project: Tools (JBoss Tools)
> Issue Type: Bug
> Components: server
> Affects Versions: 4.4.2.Final
> Environment: MacOS Sierra, JDK 1.8.0_112
> Reporter: Jon Kranes
> Assignee: Rob Stryker
> Fix For: 4.4.3.Final
>
>
> Steps to reproduce:
> * Install latest Eclipse (Neon 4.6.2) (also tested with Spring ToolSuite 3.8.3 with same result)
> * Install JBoss AS, Wildfly & EAP Server Tools from JBoss Tools 4.4.2 Final
> * Add Wildfly 10.x runtime to Eclipse (tested 10.0 and 10.1 with same results)
> * Add Wildfly 10.x server to Eclipse
> * Create a default Maven Web App project
> * Add the web app project to the Wildfly server
> * Exit Eclipse and restart
> Eclipse hangs on startup with a thread deadlock. Eclipse "Progress" window shows "Registering Listeners" which never completes and blocks other Eclipse startup tasks. At this point Eclipse cannot exit and must be force-quit.
> Thread dump output from jvisualvm shows a thread deadlock:
> Found one Java-level deadlock:
> =============================
> "Thread-8":
> waiting to lock monitor 0x000000011fe4e758 (object 0x0000000782b7aa00, a org.eclipse.wst.server.core.internal.Server),
> which is held by "Worker-0"
> "Worker-0":
> waiting to lock monitor 0x0000000101a566e8 (object 0x0000000782b7aa70, a org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager),
> which is held by "Thread-8"
> Java stack information for the threads listed above:
> ===================================================
> "Thread-8":
> at org.eclipse.wst.server.core.internal.Server.getServerNotificationManager(Server.java:1034)
> - waiting to lock <0x0000000782b7aa00> (a org.eclipse.wst.server.core.internal.Server)
> at org.eclipse.wst.server.core.internal.Server.removeServerListener(Server.java:697)
> at org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager.protectAddManagerAsListeners(UnitedServerListenerManager.java:152)
> - locked <0x0000000782b7aa70> (a org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager)
> at org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager.initializeManager(UnitedServerListenerManager.java:81)
> at org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager.access$1(UnitedServerListenerManager.java:73)
> at org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager$1.run(UnitedServerListenerManager.java:68)
> "Worker-0":
> at org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager.addListener(UnitedServerListenerManager.java:109)
> - waiting to lock <0x0000000782b7aa70> (a org.jboss.ide.eclipse.as.core.server.UnitedServerListenerManager)
> at org.jboss.ide.eclipse.as.core.JBossServerCorePlugin.start(JBossServerCorePlugin.java:74)
> at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:774)
> at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
> at java.security.AccessController.doPrivileged(Native Method)
> at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:767)
> at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:724)
> at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:932)
> at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:309)
> at org.eclipse.osgi.container.Module.doStart(Module.java:581)
> at org.eclipse.osgi.container.Module.start(Module.java:449)
> at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:470)
> at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
> at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:529)
> at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:325)
> at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:345)
> at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:423)
> at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372)
> at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364)
> at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:564)
> at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
> at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
> at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
> at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
> at org.eclipse.wst.server.core.internal.ServerType.createServerDelegate(ServerType.java:91)
> at org.eclipse.wst.server.core.internal.Server.getDelegate(Server.java:506)
> - locked <0x0000000782b7aa00> (a org.eclipse.wst.server.core.internal.Server)
> at org.eclipse.wst.server.core.internal.Server.getChildModules(Server.java:2634)
> at org.eclipse.wst.server.core.internal.Server.visitModule(Server.java:3058)
> at org.eclipse.wst.server.core.internal.Server.visit(Server.java:3039)
> at org.eclipse.wst.server.core.internal.Server.getAllModules(Server.java:1542)
> at org.eclipse.wst.server.ui.internal.cnf.ServersView2$3.run(ServersView2.java:189)
> at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
> Found 1 deadlock.
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