Date:	Wed, 16 Oct 1996 19:18:11 +0200 (MET DST)
From:	Mark Habersack <grendel AT ananke DOT amu DOT edu DOT pl>
Reply-To:	grendel AT ananke DOT amu DOT edu DOT pl
To:	Leath Muller <leathm AT gbrmpa DOT gov DOT au>
cc:	djgpp AT delorie DOT com
Subject:	Re: New threads package available!
In-Reply-To:	<32643931.5451@gbrmpa.gov.au>
Message-ID:	<Pine.NEB.3.95.961016191201.14188I-100000@ananke.amu.edu.pl>
MIME-Version:	1.0

On Wed, 16 Oct 1996, Leath Muller wrote:

>> >The lwp package is a very simple time sliced multitasking library.  It
>> >allows you to execute functions 'in the backround' without having to
>> >worry about multitasking.  The package supports two of the PC's timers
>> >so that it will still work with other librarys that also use the timer.
> 
>> Josh, will the library be able to handle several TASKS (i.e. real
>> applications) in the future. Do you intend to extend it to work as a simple
>> kernel for asynchronous execution of tasks?
>
>Here is food for thought: Is it possible to implement threads of this
>sort into csdpmi? If we could, then we would be able to run seperate
It's certainly possible. But you must remember that CWSDPMI is a very delicate
structure and I suppose that Charles is the only one who knows it good enough
to modify it (I once tried to add DPMI 1.0 services to it but all I achieved
is dead computer). Yet Charles says there won't be (probably) any further
releases of CWSDPMI... Maybe just a little guide over the code, Charls? ;-)

 >programs, spawn them, have forks and semaphores, etc. csdpmi would be
>able to control the ldt's and what not for true multi-tasking. Mind
Sure, implementing it inside CWSDPMI would make things easier since it can run
some parts of code in ring 0 and this is required to do task switching in PM.

>you, we would be better off with this using the ELF format (geez, I 
>hope I don't start this up again... :)
>
>What do you think? possible? (A lot of work in the smallest case... ;)
There's just another small 'but' here. Adding task switching capabilities to
CWSDPMI would mean making it into a small OS kernel. It'd be small if to look
at it as on an OS but as DPMI server it would be rather big. Well, I suppose
that 'with a little help of my friends' we could do it. Charls, would it be
very time-consuming for you to enlighten us as to obscure CWSDPMI internals?

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The problems always seem to be
  we're picking up the pieces on the ricochet
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