[Ace-users] [ace-users] Singlethread servant upcall (using CSD)
Douglas C. Schmidt
schmidt at dre.vanderbilt.edu
Thu Oct 11 05:11:35 CDT 2007
I think you'll need to check with the OCI folks about how to
achieve this using CSD since they wrote this code!
>ext Douglas C. Schmidt wrote:
>>> in the meantime we found the problem. We have to use the Wait-on-Read
>>> Wait Strategy.
>Unfortunately we can't use this option because we run into a deadlock
>situation when two processes took over the client role and try to call
>>> The "borrowing" of other threads by the ORB caused serious racing
>>> conditions. I'm really wondering why this is the default when the POA
>>> is configured with the thread policy
>> The ORB and the POA policies are at different levels of abstraction
>> and should be completely orthogonal.
>Our basic problem is that incoming calls can overtake each other by being
>processed in different threads. The main reason for taking the client
>strategy factory "Wait-on-Read Wait" (rw) was to avoid the borrowing of
>other threads for incoming calls.
>Because we've implemented a CSD Strategy which queues these calls for
>later dispatching in an other thread it is simply the order of the
>incoming calls which leads to problems in our application.
>Is it possible to achieve that the ORB didn't borrows an other thread
>Jochen Rothenbacher Nokia Siemens Networks GmbH & Co. KG
> EMail: jochen.rothenbacher at nsn.com
Dr. Douglas C. Schmidt Professor and Associate Chair
Electrical Engineering and Computer Science TEL: (615) 343-8197
Vanderbilt University WEB: www.dre.vanderbilt.edu/~schmidt
Nashville, TN 37203 NET: d.schmidt at vanderbilt.edu
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