IPhone system clock and sleep clock

Question

Is there a way to save the number of ticks in an iPhone app that:

• regardless of system clock
• does not affect device sleep mode (unlike CACurrentMediaTime (), UpTime (), etc.).

Answer 1

Try this class, it will get access to the Mach kernel time on the device (like the number of samples since the system started ) https://github.com/maddox/cocoaheads_gltouches/blob/master/Classes/MachTimer.m