[omniORB] GUI and OmniORB Event loop

[Frйdйric Prin]

Thanks all !


| Frederic Prin - Senior software engineer
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----- Original Message -----
From: Anton Idukov <idukov@crtc.spb.ru>
To: <bjensen@mdsproteomics.dk>
Cc: omni <omniorb-list@uk.research.att.com>
Sent: Friday, October 26, 2001 3:42 PM
Subject: Re: [omniORB] GUI and OmniORB Event loop


> Hi,
> Plus for this. Today GUI programming is the work with many kinds of GUI
> Toolkits
> (such as Gtk , Qt, Tk or Motif ). Such toolkits have custom event loop
> blocking
> functions/methods usually placed inside main thread.
> Plus XWindows API hasn't standard supported way
> for asynchronios rendering.
> I think work_pending()/perform_work() is not good method, and special
> for monitoring applications.
> I think Better way is multithreaded orb with data channel ( for example
> c++ stl std::queue or std::list )
> used by  CORBA end and  Timer or Idle work toolkit functions on other end.
> In win32 GDI we need critical_section wrapper for Graphic Context use.
> In many cases using work_pending() / perform_work() give us
> block'n'drugs apps :(
>
>
> bjorn rohde jensen wrote:
>
> >Hi,
> >
> > I did play a bit with CORBA GUI applications using X strictly for fun,
> >and
> >i would say, that usually you have two basic choices. ORB's have a
> >blocking
> >run() method, and a pair of work_pending()/perform_work() methods, and
> >in
> >my limited experience so do most GUIs such as X. You could write a
> >combined
> >event loop using the work_pending/perform_work methods of the orb and
> >their
> >GUI counter parts, or you can dedicate a thread to the event loop of the
> >ORB
> >and one to the event loop of the GUI. I chose to use threads, since i
> >did
> >not want to mess with the event loops, and the OS is probably quite a
> >bit
> >better at sharing the cpu resources between two event loops, than any
> >mixed
> >event loop, i was ready to write.
> >
> >Sincerely
> >
> >Bjorn Rohde Jensen
> >
> >
> >
>     Sincerely
>
>     Anton
>
>
>