[omniORB] Multi-threaded clients

[Haarek Ryeng]

Try a posting on the Orbacus mailinglist to see if they can help you on the Java side (more connections). If so, replacing the Java orb should be relatively easy.
Orbacus is free for no-commercial use, and relatively cheap for commercial use.
As I understand, the Java IDL isn't exactly the best ever Java orb....

-HR-

Robert Huffman wrote:

> On Mon, 7 May 2001, Gary D. Duzan wrote:
>
> > In Message <Pine.LNX.4.33.0105071608020.23140-100000@gatesofhell.measurecast.com> ,
> >    Robert Huffman <rhuffman@measurecast.com> wrote:
> >
> > =>
> > =>We're having a problem with multi-threaded Java clients connecting to a
> > =>C++ OmniORB server.  To build the Java client, we use the idl2java
> > =>compiler provided with Sun's JDK.
> > =>
> > =>It appears that any call to the server will block all the other threads
> > =>that are trying to call the server.
> >
> >    It probably is an omniORB question, actually. OmniORB uses a
> > thread-per-connection model, so if the client ORB sends all its
> > requests over a single connection (as I suspect is happening in
> > your case) they will all be handled by the single server thread,
> > effectively serializing them...
> >
> > I understand the threading behaviour may be changing for omniORB 4,
> > but others closer to the development can address that.
>
> OK, that makes sense.  Now, the question is, is there a workaround (short
> of doing something really whacky like breaking our client into multiple
> processes).  I've tried a couple of things.  For example, I created a new
> ORB for each request and invoked ORB.connect(Object), but that threw an
> unknown CORBA exception.  Then I tried using DII and the
> ORB.send_multiple_requests_deferred(Request[]) method, but the good folks
> at Sun send the requests over the single connection sequentially, thus
> resulting in the same behavior.
>
> Any other ideas?
>
> And does anyone know when omniORB 4 will be release?  Is there a feature
> list somewhere?  (I couldn't access the link posted by Christof Meerwalt.)

--
Haarek Ryeng
Senior Software Development Engineer
Data Respons AS, Sandviksvn. 26,N-1323 HOEVIK, Norway.
Tel: +47 67112071 Mob: +47 90196734

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