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Re: periodic threads with kapi?


On Mon, Aug 18, 2003 at 12:32:01PM +0100, Nick Garnett wrote:
> If the OP wants genuine periodic threads then it is probably best to
> set up an interval alarm that posts to a semaphore each time it
> triggers. 

Is this the normal way periodic threads are done on ecos? Seems like kind of
a hassle for something as common as periodic threads.

> This would be much cheaper in terms of overhead than using
> cyg_thread_delay(). It also allows the alarm function to detect whether
> the periodic thread has overrun.

Why is there extra overhead? Isn't the delay function implemented with a
thread timer that is an alarm?

-- 
Ryan Boder
http://www.bitwiser.org/icanoop

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