[ale] Driver question

[mhirsch at nubridges.com (Michael Hirsch)]

On Wed, 2002-09-04 at 12:19, cfowler wrote:
> I need to create a function in a driver that does a task every N
> seconds.  I can not find a simple piece of text that tells me hoe I can
> do this.
> 
> Example:
> 
> 
> doAllSums(void)
> {
> 
> 	// Do something
> }
> 
> I need doAllSums to calculate stats in my driver every 8 seconds. 
> Anyone here can help me?

When you say "driver" to you mean kernel level driver, or a user level
program that drives something?  I wouldn't think that this functionality
would be a good thing to put in a kernel driver.  I'd expect a kernel
driver to keep a running total, maybe, but not an intermittent sum.

For a user program, the easiest would be to spawn a thread (using
pthreads) that wakes up every 8 seconds, grabs a semaphore, and
calculates the sum.

--Michael


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