Re: PAD and preemptive multi-tasking

On Fri, 20 Dec 2024 10:10:31 +0000, Anton Ertl wrote:

Bernd Paysan have been wondering what to do about PAD in the presence
of preemptive multitasking (but not multi-user) as implemented in
Gforth.
>
We see two possible scenarios:
>
If PAD is used only directly by the user for interactive work, only
one PAD is needed.
>
OTOH, if PAD is used as temporary storage in words that may be called
by any task, PAD needs to be part of the per-task (aka USER) data.
>
My understanding is that classical multi-tasking Forth systems
(polyForth, I guess) were also multi-user and had one dictionary per
task, so they also had one dictionary pointer and therefore one PAD
per task, but I have not worked with any of them and the descriptions
I have read have been very sketchy, so this could be wrong.
>
In any case, the question is how PAD is used by current programs that
might be run on Gforth.
>
- anton

I use upad instead:
maxcounted 1+ newuser upad
Jos
--