What's the equivalent of Windows' QueryPerformanceCounter on OSX?

On OSX mach_absolute_time and mach_timebase_info are the best equivalents to Win32 QueryPerformance* functions.

http://www.tin.org/bin/man.cgi?section=3&topic=clock_gettime(and the other functions mentioned there)- it's Posix! Will fall back to worse counters if HPET is not existent. (shouldn't be a problem though)

Resolution should be about +10Mhz.

c++ c windows unix porting

Try boost's ptime for portable high-resolution timing.

Update (prompted, 2 years on, by Mark's comment below):

These days I'd use a std::chrono::high_resolution_clock ; example.

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