[jira] [Created] (GROOVY-7733) Can't unloaded Groovy classes - PermGen Erros

["Itay Hudedi (JIRA)" <ji...@apache.org>]

Itay Hudedi created GROOVY-7733:
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             Summary: Can't unloaded Groovy classes - PermGen Erros
                 Key: GROOVY-7733
                 URL: https://issues.apache.org/jira/browse/GROOVY-7733
             Project: Groovy
          Issue Type: Bug
          Components: groovy-jdk
    Affects Versions: 1.0-JSR-5
         Environment: linux,windows
            Reporter: Itay Hudedi
            Priority: Critical




I have a legacy system that is extensively using Groovy version 1.0 and currently I can not update Groovy to an updated version. From time to time I'm getting a PermGen error due to the fact that all the Groovy classes/scripts are kept in memory even if no one is using them any more.
I'm trying to figure out what is the correct way to unload those classes after I've finished using them.

I'm using the following code to create the Script object:

    GroovyShell shell=new GroovyShell();
    Script script = shell.parse("ANY_TEXT");
    .....

And I'm trying the following code to unload the generated class:

    MetaClassRegistry metaClassRegistry = MetaClassRegistry.getIntance(0);
    metaClassRegistry.removeMetaClass(script.getMetaClass().getClass());
    metaClassRegistry.removeMetaClass(script.getClass());
    metaClassRegistry.removeMetaClass(script.getBinding().getClass());
    script.setBinding(null);
    script.setMetaClass(null);
    script = null;

Unfortunately, this doesn't seems to work because I keep on getting a PermGen error. How can I unloaded groovy classes and keep the PermGen size reasonable?




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