Sub-millisecond precision timing in C or C++

Question

What techniques / methods exist for getting sub-millisecond precision timing data in C or C++, and what precision and accuracy do they provide? I\'m looking for methods tha

Answer 1

boost::datetime has microsecond precision clock but its accuracy depends on the platform.

The documentation states:

ptime microsec_clock::local_time() "Get the local time using a sub second resolution clock. On Unix systems this is implemented using GetTimeOfDay. On most Win32 platforms it is implemented using ftime. Win32 systems often do not achieve microsecond resolution via this API. If higher resolution is critical to your application test your platform to see the achieved resolution."

http://www.boost.org/doc/libs/1_43_0/doc/html/date_time/posix_time.html#date_time.posix_time.ptime_class