Guillaume Nodet created FELIX-3761:
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Summary: When a bundle registers a service, the bundle lock is
obtained without any real purpose
Key: FELIX-3761
URL: https://issues.apache.org/jira/browse/FELIX-3761
Project: Felix
Issue Type: Bug
Affects Versions: framework-4.0.2
Reporter: Guillaume Nodet
It leads to the following kind of deadlocks:
{code}
"Felix WebConsole worker" Id=170 in WAITING on lock=[Ljava.lang.Object;@108a93d9
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:485)
at org.apache.felix.framework.Felix.acquireBundleLock(Felix.java:5203)
at org.apache.felix.framework.Felix.registerService(Felix.java:3452)
at
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:346)
at
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:320)
at
org.apache.felix.webconsole.internal.core.BundlesServlet.activate(BundlesServlet.java:132)
at
org.apache.felix.webconsole.internal.servlet.PluginHolder$InternalPlugin.doGetConsolePlugin(PluginHolder.java:752)
at
org.apache.felix.webconsole.internal.servlet.PluginHolder$Plugin.getConsolePlugin(PluginHolder.java:535)
at
org.apache.felix.webconsole.internal.servlet.PluginHolder.getPlugin(PluginHolder.java:205)
at
org.apache.felix.webconsole.internal.servlet.OsgiManager.initInternalPlugins(OsgiManager.java:1016)
at
org.apache.felix.webconsole.internal.servlet.OsgiManager.doUpdateConfiguration(OsgiManager.java:981)
at
org.apache.felix.webconsole.internal.servlet.OsgiManager$6.run(OsgiManager.java:930)
at
org.apache.felix.webconsole.internal.servlet.Executor$Worker.run(Executor.java:67)
"FelixFrameworkWiring" Id=168 in WAITING on lock=java.lang.Object@3d6bca49
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:485)
at
org.apache.felix.webconsole.internal.servlet.Executor.shutdown(Executor.java:45)
- locked org.apache.felix.webconsole.internal.servlet.Executor@21875b11
at
org.apache.felix.webconsole.internal.servlet.OsgiManager.dispose(OsgiManager.java:407)
at
org.apache.felix.webconsole.internal.KarafOsgiManagerActivator.stop(KarafOsgiManagerActivator.java:52)
at
org.apache.felix.framework.util.SecureAction.stopActivator(SecureAction.java:667)
at org.apache.felix.framework.Felix.stopBundle(Felix.java:2604)
at org.apache.felix.framework.Felix$RefreshHelper.stop(Felix.java:4961)
at org.apache.felix.framework.Felix.refreshPackages(Felix.java:4203)
at
org.apache.felix.framework.FrameworkWiringImpl.run(FrameworkWiringImpl.java:172)
at java.lang.Thread.run(Thread.java:680)
{code}
There's really no need to grab the bundle lock because the bundle is
necessarily starting / active / stopping, else an exception would have been
thrown when calling the registerService because the BundleContext object would
have been invalidated, and the registry itself is synchronized.
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