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Re: NSNull and distinct objective-C type

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Re: NSNull and distinct objective-C type

Subject: Re: NSNull and distinct objective-C type
From: David Duncan <email@hidden>
Date: Thu, 4 Jun 2009 13:22:24 -0700

On Jun 4, 2009, at 5:39 AM, email@hidden wrote:

Hello All,

I am facing an issue in use of mach_absolute_time().

mach_absolute_time() gives drift even when NTP timing update is on.

sleep(5);

Your assuming that sleep() provides drift free timing, which it does not - read the man page x-man-page://3/sleep for details.

If you want something closer to a drift free timer, then you need to determine when you want to wake up and use mach_wait_until() or a higher level API to wait until that time. -- David Duncan Apple DTS Animation and Printing

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References:  
  >NSNull and distinct objective-C type (From: Steven Hamilton <email@hidden>)
  >Re: NSNull and distinct objective-C type (From: email@hidden)




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