Re[2]: [Am-info] O/S 2 support - slightly off topic (my apologies)

[Eric M. Hopper]

On Sat, 2002-03-16 at 16:09, John Poltorak wrote:
> > Cooperative vs. preemptive
> > are CPU scheduling techniques.  Multitasking vs. multithreading are
> > about sharing memory between tasks, and not CPU scheduling at all.
> 
> OS/2 is both multitasking and multithreading, where every task consists of 
> one or more threads. Those tasks share CPU not memory AFAIAA. The only 
> time that memory is shared is when it is overcommitted and a task is 
> swapped out to disk.

Threads are tasks that share memory.  Tasks (including threads) share
CPU.

The 'vs.' in my above paragraph is not meant as 'either or' but as a
means of defining a spectrum or similarity.  Kind of like saying 'red
vs. blue' and 'sweet vs. salty'.

Have fun (if at all possible),
-- 
The best we can hope for concerning the people at large is that they
be properly armed.  -- Alexander Hamilton
-- Eric Hopper (hopper@omnifarious.org 
http://www.omnifarious.org/~hopper) --