site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com paulm On 18/01/2010, at 6:46 PM, Rustam Muginov wrote: P.S. Your name sounds familiar, any relation with Jay 'Saurik' Freeman? On Jan 18, 2010, at 3:50 AM, Jay Reynolds Freeman wrote: If there is a more appropriate mailing list for this question, please suggest it. Perusing the web suggests that there is a "granularity" -- a minimum sleep time -- at which the behavior of the "nanosleep" function changes: For times shorter than the threshold, it simply loops, but for longer times it may in fact actually sleep, and give other processes a chance to run, Does anyone know what this time is (or what other, possibly related times are), for MacOS? The answer is likely processor and clock-speed dependent, so is there a way to obtain this information at run-time on particular Mac platforms? Thanks. -- Jay Reynolds Freeman --------------------- Jay_Reynolds_Freeman@mac.com http://web.mac.com/jay_reynolds_freeman (personal web site) _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/rmuginov%40gmail.com -- Sincerely, Rustam Muginov _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/list%40no-tek.com This email sent to list@no-tek.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... I seem to recall a _very_ in-depth discussion of the various unix time functions and how they relate to OSX, by Terry Lambert. It would have been on this list or the Unix Porting list. If you can find that in the list archives, I'm sure it would answer all your questions about which to use where, when, and how they function. Hello, Jay. I think that mach_absolute_time function does have the best resolution available. I was also discussed in performance-optimization maillist and appeared that mach_absolute_time is the lowest-level recommended function. You might want to check here: http://developer.apple.com/mac/library/qa/qa2004/qa1398.html and here: http://search.lists.apple.com/? q=mach_absolute_time&cmd=Search%21&form=extended&m=all&ps=10&fmt=long&w m=wrd&wf=2221&sp=1&ul=PerfOptimization-dev This email sent to rmuginov@gmail.com This email sent to site_archiver@lists.apple.com