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From "Guillaume Sauthier (JIRA)" <>
Subject [jira] Created: (CXF-2711) Concurrency issue with AsyncHandler
Date Fri, 12 Mar 2010 16:03:27 GMT
Concurrency issue with AsyncHandler

                 Key: CXF-2711
             Project: CXF
          Issue Type: Bug
    Affects Versions: 2.2.6
         Environment: OW2 JOnAS 5.2
            Reporter: Guillaume Sauthier

The problem is on the access to the ClientCallback.done boolean

You can have a situation where the client uses the Future object he got from the dispatch.invokeAsync()
It performs an active wait using Future.isDone()

On another Thread, the WS response comes back, and the JaxwsClientCallback.handlerResponse()
is called. The handler provided by the client is called, so far everything went well. After
the AsyncHandler.handleResponse() invocation, the ClientCallback set the 'done' boolean to

But this value change is never seen by the Future.isDone() invocations!

Because the ClientCallback.done boolean is not 'volatile'.

I've made a try with a volatile 'done' and it works perfectly.

Could it be possible that this simple change makes it to the 2.2.7 ?

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