[jboss-jira] [JBoss JIRA] Commented: (JBCACHE-461) Potential bug in ReentrantWriterPreferenceReadWriteLock from util.concurrent

[Bela Ban (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBCACHE-461?page=comments#action_12348254 ] 
            
Bela Ban commented on JBCACHE-461:
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Lock upgrading is not supported by RRWL as discussed in http://altair.cs.oswego.edu/mailman/private/concurrency-interest/2006-November/003325.html.

The suggested solution is to subclass RRWL, which is actually done in JBossCache.
As an alternative, we could investigate using an AbstractQueuedSynchronizer, as suggested in http://altair.cs.oswego.edu/mailman/private/concurrency-interest/2006-November/003324.html

> Potential bug in ReentrantWriterPreferenceReadWriteLock from util.concurrent
> ----------------------------------------------------------------------------
>
>                 Key: JBCACHE-461
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-461
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 1.2.4, 1.2.4SP1
>            Reporter: Manik Surtani
>         Assigned To: Manik Surtani
>            Priority: Minor
>             Fix For: 2.0.0.GA
>
>
> Need to discuss on util.concurrent mail list.
> See org.jboss.cache.lock.ReentrantWriterPreference2Readers1WriterLockTest

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