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https://issues.apache.org/jira/browse/ARIES-982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Ross reassigned ARIES-982:
-------------------------------
Assignee: John Ross
> Deadlock between Subsystems EventHook and Activator
> ---------------------------------------------------
>
> Key: ARIES-982
> URL: https://issues.apache.org/jira/browse/ARIES-982
> Project: Aries
> Issue Type: Bug
> Components: Subsystem
> Affects Versions: 0.4
> Reporter: Mark Nuttall
> Assignee: John Ross
>
> We're sometimes seeing a deadlock between one thread that's passed through
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/SubsystemServiceRegistrar.register(SubsystemServiceRegistrar.java:69)
> 5XESTACKTRACE (entered lock:
> org/apache/aries/subsystem/core/internal/SubsystemServiceRegistrar@0xD6FEEAA0,
> entry count: 1)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/SubsystemResourceInstaller.installAriesSubsystem(SubsystemResourceInstaller.java:96)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/SubsystemResourceInstaller.install(SubsystemResourceInstaller.java:40)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/Subsystems.getRootSubsystem(Subsystems.java:130)
> 5XESTACKTRACE (entered lock:
> org/apache/aries/subsystem/core/internal/Subsystems@0xD6FEEAB0, entry count:
> 1)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/Activator.activate(Activator.java:167)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/Activator.addingService(Activator.java:263)
> 5XESTACKTRACE (entered lock:
> org/apache/aries/subsystem/core/internal/Activator@0xD6C83A70, entry count: 1)
> and another,
> 3XMTHREADINFO "Blueprint Extender: 2" J9VMThread:0x083A9800,
> j9thread_t:0x087B373C, java/lang/Thread:0xD6346650, state:B, prio=5
> 3XMTHREADINFO1 (native thread ID:0x770F, native priority:0x5,
> native policy:UNKNOWN)
> 3XMTHREADINFO2 (native stack address range from:0xD0278000,
> to:0xD02B9000, size:0x41000)
> 3XMTHREADBLOCK Blocked on:
> org/apache/aries/subsystem/core/internal/Activator@0xD6C83A70 Owned by:
> "Blueprint Extender: 3" (J9VMThread:0x087D5D00, java/lang/Thread:0xD66F2280)
> 3XMTHREADINFO3 Java callstack:
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/BundleEventHook.handleExplicitlyInstalledBundleBundleContext(BundleEventHook.java:55)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/BundleEventHook.handleInstalledEvent(BundleEventHook.java:93)
> 4XESTACKTRACE at
> org/apache/aries/subsystem/core/internal/BundleEventHook.event(BundleEventHook.java:41)
> The problem looks to be caused by the call to Activator.getInstance() within
> BundleEventHook.handleExplicitlyInstalledBundleBundleContext(). One option
> would be to move that call into the BundleEventHook() constructor.
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