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

["Niklas Therning (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/DIRMINA-202?page=all ]
     
Niklas Therning resolved DIRMINA-202:
-------------------------------------

    Resolution: Cannot Reproduce
     Assign To: Niklas Therning

This wasn't a bug in MINA but in JamVM when used together with GNU classpath. John, please close this issue.

> Race condition in SocketAcceptorDelegate.unbind
> -----------------------------------------------
>
>          Key: DIRMINA-202
>          URL: http://issues.apache.org/jira/browse/DIRMINA-202
>      Project: Directory MINA
>         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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