[jira] Closed: (DIRMINA-202) Race condition in SocketAcceptorDelegate.unbind

["Emmanuel Lecharny (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DIRMINA-202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Lecharny closed DIRMINA-202.
-------------------------------------


> Race condition in SocketAcceptorDelegate.unbind
> -----------------------------------------------
>
>                 Key: DIRMINA-202
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-202
>             Project: MINA
>          Issue Type: Bug
>            Reporter: John K Peterson
>            Assignee: Niklas Therning
>
> On my system (Linux 2.4.22/JamVM 1.4.2/Classpath 0.90), ApacheDS gets stuck in SocketAcceptorDelegate.unbind.
> SocketAcceptorDelegate.unbind does the following:
> 1) creates a cancellation request
> 2) starts up a worker thread
> 3) puts the cancellation request on the cancelQueue
> 4) wakes up the worker thread's selector
> 5) waits for the cancellation request to be done
> The problem is that 4) assumes that 2) has gotten the worker thread to point where it has called selector.select().   However, there's no guarantee that the worker thread has gotten that far, in which case the wakeup occurs before the select and then the select hangs.

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