How to use NSTimer to check the performance of function? Actually, I am making a dylib which is Cydia Software. I have found many resources, but I still don't know which part of my functions slow down whole program. I need someone's help....
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Why don't you try and use Instruments with time profiler? This will give you plenty of information without the hassle of having to come up with a timer based handcrafted profiler.
Have a look at this article for more details.
sergio
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The clock function returns a tick of type clock_t that is defined by a CLOCKS_PER_SEC constants. Posix requires this value to be 1000000 ticks per second (microsecond), but that is not guaranteed by ANSI-C. So, you should check CLOCKS_PER_SEC to see the actually resolution on your platform.
duplicated question: How to measure time in milliseconds using ANSI C?
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actually, I am using dylib that cannot be checked by this directly. I think I need a timing code like NSTimer. I found a source code from your reference. – KKTong Jul 05 '11 at 08:13