IPhone Performance Counters

Question

I am trying to find the best method of decoding performance control on iPhone.

On the Windows platform, I would use the following functions:

QueryPerformanceCounter ((LARGE_INTEGER *) & ctr);
QueryPerformanceFrequency ((LARGE_INTEGER *) & freq);

Is there anything similar on the iPhone? What is the maximum resolution I can do without using an external tool like tools or a shark?

Answer 1

I think mach_absolute_time is what you are looking for. For more information:

• Technical Q & A QA1398: Mach Absolute Time Units
• Tutorial: Productivity and Time
• mach_ absolute_ time on iPhone