[seam-issues] [JBoss JIRA] Created: (JBSEAM-4576) Upgrade Javassist to new version - current version has memory leaks

[Marek Novotny (JIRA)]

Upgrade Javassist to new version - current version has memory leaks
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                 Key: JBSEAM-4576
                 URL: https://jira.jboss.org/jira/browse/JBSEAM-4576
             Project: Seam
          Issue Type: Task
          Components: Core
    Affects Versions: 2.2.0.GA, 2.2.0.CR1
            Reporter: Marek Novotny
            Assignee: Marek Novotny
             Fix For: 2.2.1.CR2


The problem is caused by the current javassist usage pattern of calling ProxyFactory.createClass().newInstance() which currently (due to the broken cache), always creates a new class for the proxy. And once this class gets classloaded, you cannot easily get rid of it from the ClassLoaders class map.

There were also a few problems with deserialization, mainly because it did drop the assigned MethodHandler and used the DefaultMethodHandler instead.
Storing a static reference cause a problem for garbage collection, because the MethodHandler set directly into the ProxyFactory can never get freed.

Patches from Mark Struberg is available at http://github.com/struberg/javassist





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