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From "Shash Chatterjee (JIRA)" <...@excalibur.apache.org>
Subject [jira] Assigned: (EXLBR-1) Timing bug in rg.apache.excalibur.thread.ThreadControl.join()
Date Sat, 16 Apr 2005 15:39:01 GMT
     [ http://issues.apache.org/jira/browse/EXLBR-1?page=history ]

Shash Chatterjee reassigned EXLBR-1:

    Assign To: Shash Chatterjee

> Timing bug in rg.apache.excalibur.thread.ThreadControl.join()
> -------------------------------------------------------------
>          Key: EXLBR-1
>          URL: http://issues.apache.org/jira/browse/EXLBR-1
>      Project: Excalibur Components
>         Type: Bug
>   Components: Thread
>  Environment: Mandrake 9.2 on Compaq Armada E500
>     Reporter: Pradeep Krishnan
>     Assignee: Shash Chatterjee

> The ThreadControl implimentation in org.apache.excalibur.thread.impl.DefaultThreadControl
has a timing bug in the join() function. There is a small timing window between the time the
worker thread has finished executing and before a call to the finish() method of the ThreadControl
is made. This can cause the threads waiting on a join(0) to never wake-up.
> The patch is simple: instead of delegating the join() to the m_thread, do a wait(). The
finish() method of the org.apache.excalibur.thread.impl.DefaultThreadControl does a notifyAll()
 and that should wake up the calling thread. 

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