For multi-threading, at least for DJGPP, there were 4 libraries [1]:
POSIX Threads[2]
LWP [3]
PDMLWP [4]
Palantir for Allegro [5]
[1] http://www.delorie.com/djgpp/v2faq/faq22_4.html
[2] ftp://ftp.cs.fsu.edu/pub/PART/PTHREADS/pthreads.zip
[3] http://www.goodnet.com/~snarfy
[4] http://www.netgull.com/djgpp/current/v2tk/pdmlwp03.zip
[5] http://www.netgull.com/djgpp/current/v2tk/allegro/plntir05.zip
On Thu, Jul 10, 2014 at 9:01 AM, Bret Johnson <[email protected]> wrote:
> FWIW, I've been mulling around in my head and doing a little research on
> what "threads" in DOS might need to look like. Based on what I've seen so
> far, I think it might be possible to do parallel processing in DOS, but not
> "threads" (at least not in the traditional sense).
>
> There would be lots of technical issues to be worked out, of course. The
> biggest one, I think, would be the fact I don't think any of the DOS
> protected mode server applications (like DPMI, VCPI, extenders, etc.) will
> work correctly in a multiprocessor environment. I think people are going
> to want both protected mode memory access and parallel processing at the
> same time, which may not be possible with any of the currently available
> options. I think it's going to require a completely different approach
> than anything that's been done in the past.
>
> I haven't actually done anything with the idea yet, since the very small
> amount of time I have to devote to stuff like this is spent updating the
> USB drivers. The parallel processing trail was something I'd hoped might
> benefit the USB drivers in some fashion (like improving speed). It may in
> the end be useful for that, but it's too complicated and time-consuming for
> me to tackle right now.
>
>
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