Thanks for all the great feedback.
Eric
On Thu, Apr 23, 2009 at 9:12 AM, Michael Ash <michael....@gmail.com> wrote:
> On Thu, Apr 23, 2009 at 2:06 AM, Wade Tregaskis <wadesli...@mac.com>
> wrote:
> > P.S. For completeness I should mention of course nanosleep, but I don't
> know
> > of its precision and in any case it can be interrupted by signals, which
> > makes it more difficult to use than you'd expect.
>
> Its precision is, of course, nanoseconds. The question is its
> accuracy. I think the answer there is that it's as accurate as the
> scheduler can make it, which will depend on system load.
>
> Signal interruption is not very difficult at all. Essentially all you
> have to do is stick the call in a loop. Unsafe code already has the
> necessary calculations (pseudocode):
>
> remainingTime = targetTime - now;
> nanosleep(remainingTime);
>
> So all you have to do is wrap it in a loop that keeps retrying:
>
> while(1) {
> remainingTime = targetTime - now;
> if(remainingTime <= 0) break;
> nanosleep(remainingTime);
> }
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Interactive design and development
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