itsy bitsy Unix

[Stan Barr]

Hi,

Huw Davies said:
> 
> On 18/03/2005, at 7:04 AM, Paul Koning wrote:
> > Come to think of it, cooperative multitasking is trivial, you can code
> > your own.  It looks like this:
> >
> >      for {;;} { task1(); task2(); task3; /* etc */ }
> >
> > and each task simply does stuff for a while, then returns when it has
> > nothing left to do or when it's time to give another task a shot at
> > the CPU.  That sort of system is very simple and very reliable.
> 
> Anyone who's used a Macintosh before OS-X might want to disagree here.

But MacOS, and Windows =< 3, were not well designed systems in that
respect.  In particular ISTR that they did not force a task switch
on all calls to in/out functions, which has an impact on performance
among other things.  There was a discussion about this in the Forth 
newsgroup recently.

(I use pre-OS-X Macintoshes...)

-- 
Cheers,
Stan Barr  stanb at dial.pipex.com

The future was never like this!