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I've used the ACE programming framework to
implement threaded applications in the past. There are considerable advantages
to using such as a framework to do threading. As well, it also supports message
queues which work very well with threads. It has all the paradigm required to
support threading, locking etc ...
----- Original Message -----
Sent: Tuesday, November 07, 2006 9:01
AM
Subject: Re: [Flightgear-devel] OSG and
multicore processor
On 11/7/06, Frederic Bouvier
<[EMAIL PROTECTED]> wrote:
FGFS
doesn't use threading much at that time. Only for the scenery loader
and
metar. One can thing of putting the FDM or AI in other threads, or
maybe even
divide the viewport into small areas that could be rendered in
parallel. I
don't know if its doable, but for now, you will only see an
improvement running
multiple programs in parallel. As you already see,
Atlas or Terrasync can run on
their own core and not disturb
FG.
In FlightGear we intentionally minimize the use of threading to
places where there is a huge need.
Adding a thread significantly
increases the complexity of the code and can hide a large variety of execution
order and timing problems which can be incredibly difficult to debug and fix.
If we are ever add additional threads, it will be only
because we are forced to by clear and overwhelming performance considerations
(and not for design or preference reasons.)
Regards,
Curt.
--
Curtis Olson - University of Minnesota
- FlightGear Project
http://baron.flightgear.org/~curt/ http://www.humanfirst.umn.edu/
http://www.flightgear.org
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