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From "Ben McCann (JIRA)" <>
Subject [jira] [Resolved] (BCEL-186) Performance degradation with the UTF8 cache
Date Wed, 04 Feb 2015 18:38:35 GMT


Ben McCann resolved BCEL-186.
    Resolution: Fixed

Fixed here:

> Performance degradation with the UTF8 cache
> -------------------------------------------
>                 Key: BCEL-186
>                 URL:
>             Project: Commons BCEL
>          Issue Type: Bug
>    Affects Versions: 6.0
>            Reporter: Ben McCann
>             Fix For: 6.0
>         Attachments: patch2.diff, revert-ConstantUtf8-cache.diff
> I'd love to see 6.0 released.
> Here was the last vote:
> Konstantin Kolinko reported some issues with caching that blocked the release:
> bq. I noted new methods that introduced caching into classfile.ConstantUtf8 class. BCEL_DONT_CACHE
should at least have static setter, or a static setter for a cache instance / a factory class.
RELEASE-NOTES.txt describes this change as [BCEL-163] Incorporate patch file from Findbugs
which does not say much about this change. Actually this change introduced caching for ConstantUtf8
and ObjectType instances.
> Emmanuel Bourg did some investigation and testing and reported back:
> bq. If nobody object I'll remove this cache, the impact on the performance is too important
to enable it by default, and the static state smells like a quick and dirty implementation.
This feature could return as a pluggable cache if someone wants to provide a patch.
> garydgregory suggested adding a flush method to clear the cache in ObjectType

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