Re: [osg-users] Running viewer loop and physic calculations in different threads

[Cory Riddell]

Hi Alfonso, I'm doing something similar to what you are doing. My viewer is running in it's own thread. I have a shared object that I use to communicate between the threads. If you are looking for sample code, I can try to distill what I have to something relatively simple. I'm using the boost threads library. It seems to work quite well and is cross platform. Have you written multi-threaded apps before? Are you familiar with mutexes (mutices?), conditions, volatile variables, spurious wakes, etc...? If you aren't familiar with the boost stuff, I would recommend spending some time getting familiar with it. Aside: if anybody can explain why spurious wakes exist, I'd love to hear an explanation. Cory Alfonso Callejo Goena wrote: Hello everyone:   I'm developing a OSG-based graphic engine for a real time mechanical simulator. I would like that the physics and the graphic display would run in separate threads so that they could work independently without bothering each other. The communication between them is a kind of buffer or list to which the physics program pushes the last calculation and the graphic program pulls the appropriate one. I don't know which is the best (and most simple) way of setting up and managing the threads. Does the osgViewer class have a way of doing this? Where can I find an example which follows this technique?   Thank you, Alfonso _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

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