Re: [Flightgear-devel] scheduling and threading

[Erik H. <er...@eh...>]

John Denker wrote:
> More generally:  Have there been any design decisions
> made as to what functions should continue to work
> during pause, and which should not? 

This is a fundamental discussion that often separates the home 
simulation use and professional simulators. So far concentration has 
gone into the first I guess, but the second would not exclude the first 
(while the first might exclude the second).

> Even more generally:  To what extent is FG thread-safe?
> At one extreme, is this merely an aspiration for the
> distant future?  At the other extreme, is this an
> established fact and requirement?  Are there perhaps
> bits that are known to be thread-safe, and can be 
> threaded, so long as we stay away from the naughty
> bits?  Is the answer different for MSVC versus Linux?

FlightGear is not thread safe, simply because it uses OpenGL. Parts of 
it can work with threads though, and some already do.

Erik