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https://issues.apache.org/jira/browse/OGNL-20?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maurizio Cucchiara resolved OGNL-20.
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    Resolution: Fixed
      Assignee: Maurizio Cucchiara

OK, 
I have just merged the branch with the trunk.
Please let me know...
                
> Performance - Replace synchronized blocks with ReentrantReadWriteLock
> ---------------------------------------------------------------------
>
>                 Key: OGNL-20
>                 URL: https://issues.apache.org/jira/browse/OGNL-20
>             Project: OGNL
>          Issue Type: Improvement
>         Environment: ALL
>            Reporter: Greg Lively
>            Assignee: Maurizio Cucchiara
>         Attachments: Bench Results.txt, Caching_Mechanism_Benchmarks.patch
>
>
> I've noticed a lot of synchronized blocks of code in OGNL. For the most part, 
> these synchronized blocks are controlling access to HashMaps, etc. I believe 
> this could be done far better using ReentrantReadWriteLocks. 
> ReentrantReadWriteLock allows unlimited concurrent access, and single threads 
> only for writes. Perfect in an environment where the ratio of reads  is far 
> higher than writes; which is typically the scenario for caching. Plus the 
> access control can be tuned for reads and writes; not just a big 
> synchronized{} wrapping a bunch of code.

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