Re: Concurrency in Gnat 3.05?

[jerry@jvdsys.nextjk.stuyts.nl (Jerry van Dijk)]

Spasmo (cosc19z5@Bayou.UH.EDU) wrote:

: Is Gnat 3.05 (for DOS) truly concurrent when executing tasks?

The theoretical answer is: no, of course not, if you are running
on a single processor.

But what you probably wanted to ask is: does GNAT/DOS do multi-tasking ?
The answer, yes. But not pre-emptive tasking, what seems to be what you
expected, but cooperative tasking. 

>  I'm
: asking because I've written some tasking code (finally got it
: to link) and when I ran the code, the tasks didn't run
: concurrently at all.  I'm running in a Win95 DOS box.

I'm not using Win95 but when I was playing around with the tasking
like that I sprinkeled it with small delay statements to ask for a task
switch...

: or would I have to look for a
: GNAT that's native to something like WinNT/95 that can
: handle multi-tasking?

You might, but I am not sure if the Win/NT version will map to native threads
under Win95. 

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