[jbossts-issues] [JBoss JIRA] Commented: (JBTM-365) addSynchronization calls during beforeCompletion are problematic

Pavel Kadlec (JIRA) jira-events at lists.jboss.org
Wed Jun 18 11:14:37 EDT 2008


    [ http://jira.jboss.com/jira/browse/JBTM-365?page=comments#action_12417805 ] 
            
Pavel Kadlec commented on JBTM-365:
-----------------------------------

I do not understand why you synchronize access to variable _synchs each time on different variable. Against variable this, _synchs, and _syncLock. Is it plan? I am not sure. I can not see all conseruences, but it looks strange.

> addSynchronization calls during beforeCompletion are problematic
> ----------------------------------------------------------------
>
>                 Key: JBTM-365
>                 URL: http://jira.jboss.com/jira/browse/JBTM-365
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: JTA Implementation
>    Affects Versions: 4.3.0.GA
>            Reporter: Steven Hawkins
>         Assigned To: Andrew Dinn
>             Fix For: 4.4.CR1
>
>
> Asynch calls to com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.addSynchronization during beforeCompletion are problematic since access to _currentRecord and _synchs is unsynchronized in addSynchronization wrt beforeCompletion.  This is similar to JBTM-188.

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