[jboss-remoting-issues] [JBoss JIRA] Closed: (JBREM-1218) ConnectionValidator.isValid should be volatile

[Ron Sigal (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBREM-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ron Sigal closed JBREM-1218.
----------------------------

    Resolution: Done


Fix applied to branches 2.2 and 2.x.

> ConnectionValidator.isValid should be volatile
> ----------------------------------------------
>
>                 Key: JBREM-1218
>                 URL: https://jira.jboss.org/jira/browse/JBREM-1218
>             Project: JBoss Remoting
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 2.5.2.SP2 (Flounder), 2.2.3.SP2
>            Reporter: Ron Sigal
>            Assignee: Ron Sigal
>             Fix For: 2.5.2.SP3 (Flounder), 2.2.3.SP3
>
>
> org.jboss.remoting.ConnectionValidator's variable isValid is set in run(), which runs in one thread, and is read in ConnectionValidator.WaitOnConnectionCheckTimerTask.run(), which runs in another thread.  After ConnectionValidator.run()  sets isValid, is calls notifyAll() on a lock, which wakes up WaitOnConnectionCheckTimerTask.run(), which then looks at the value of isValid.  It's possible for the most recent value of isValid to not yet be visible to WaitOnConnectionCheckTimerTask.run().

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