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Posted to dev@felix.apache.org by "Jed Wesley-Smith (JIRA)" <ji...@apache.org> on 2009/05/22 04:18:45 UTC
[jira] Updated: (FELIX-1170) MemoryLeak when stopping and
restarting Felix
[ https://issues.apache.org/jira/browse/FELIX-1170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jed Wesley-Smith updated FELIX-1170:
------------------------------------
Attachment: BundleProtectionDomain.java.FELIX-1170.patch
patch attached.
Note that the hashcode and toString are now constructed up front.
> MemoryLeak when stopping and restarting Felix
> ---------------------------------------------
>
> Key: FELIX-1170
> URL: https://issues.apache.org/jira/browse/FELIX-1170
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: felix-1.2.1
> Environment: Atlassian JIRA
> Reporter: Jed Wesley-Smith
> Attachments: BundleProtectionDomain.java.FELIX-1170.patch
>
>
> There is a memory leak caused by a strong reference from the BundleProtectionDomain to a bundle and Felix.
> The problem is that a URLClassLoader gets its AccessControlContext from the stack - AccessController.getContext() calls AccessController.getStackAccessControlContext() which is basically arbitrary at the time.
> In our case we have a ServletFilter plugin that is being loaded by Felix. When a JasperLoader (a URLClassLoader) is created to load a JSP it inherits the BundleProtectionDomain as part of its AccessControlContext. If we later shut down Felix, it cannot be GC'd due to this reference.
> For our purposes we have tested making the m_felix and m_bundle weak references and have verified that it does indeed fix the problem.
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