AVR-Chat

--- In AVR-Chat@yahoogroups.com, Dave VanHorn <dvanhorn@d...> wrote:

> At 11:27 PM 9/6/2004, stevech wrote:
> 
> > Adding events to unsuspend a
> > task (process) in a cooperative
> > multitasking system can
> > eliminate such polling.
> 
> Well, you still have to poll the
> events somehow or other. 

No, this is not true. My cooperative multi-tasking operating system, 
ECROS (see http://ecros.ecrostech.com), includes an event mechanism. 
There is no polling. When an event is sent to a task, the task is 
queued for execution if that event causes its ready condition to be 
satisfied. I suppose you could say that the queues are polled, but I 
think this would be stretching the definition of polling a bit far.

Graham.