Re: cooperative multitasking

[Sean Middleditch <elanthis@...>]

On Fri, 2002-06-07 at 12:30, Tom Wrensch wrote:
> On 7 Jun 2002, Sean Middleditch wrote:
> 
> > Yes, I meant it as a toy multi-tasker.
> 
> Hmm, well you're origional request was for cooperative multitasking. I'm
> going to assumey you are NOT talking about a system that uses timeslices
> or some such, but rather one where the various processes give up their
> turn at the processor by calling some particular routine.

What, did I start this thread?  (short memory span...)  ~,^

> 
> If that's the case then it should be a simple matter to build a process
> scheduler that turns this "toy" into a true cooperative multitasking
> system.

I'm not seeing how it would work - the co-routines actually only allow
one process to work at a time, and the thread has to give up it's right
to run.  Long-running threads with lots of processing would be sprinkled
with yield calls, no?

Or I suppose one could use the line-hook, although that would be quite
slow.

> 
> Unless someone beats me to it I expect I'll have one done in an hour or
> two.
> 
>   - Tom
>