[ES40-developers] SDL locking problems

[Camiel V. <iam...@gm...>]

Hello Everyone,

I've made a couple of changes that seem to solve the
SDL-thread-locking problem we've been seeing. The biggest change is
performing GUI initialization, GUI screen updating, and GUI event
handling all from the same thread (the VGA card's). Also, the default
time-out on locks has been increased to 5000 ms.

This should also resolve some issues where there is a GUI in the
system but no VGA-card, where the keyboard-thread would try to do
things to an uninitialized GUI.

On my development system, the emulator now works properly again with
sdl as the GUI, as well as with win32 as the GUI. I haven't tested it
on any Unix or Linux platform though. Perhaps people who are running
the emulator on these systems can report back whether sdl on
unix/linux works again, and whether x11 on unix/linux works properly
now.

Camiel.