The Boost C++ Libraries by Boris Schäling

Author:Boris Schäling [Schäling, Boris]
Language: eng
Format: epub
Published: 2014-10-24T21:00:00+00:00

boost::chrono::thread_clock returns the time used by a thread. The time measured by boost::chrono::thread_clock is comparable to CPU time, except it is per thread, rather than per process. boost::chrono::thread_clock returns the CPU time the thread has been running. It does not distinguish between time spent in user and kernel space.

boost::chrono::thread_clock isn’t supported on all platforms. You can only use boost::chrono::thread_clock if the macro BOOST_CHRONO_HAS_THREAD_CLOCK is defined.

Boost.Chrono provides the macro, BOOST_CHRONO_THREAD_CLOCK_IS_STEADY, to detect whether boost::chrono::thread_clock measures monotonic time like boost::chrono::steady_clock.

Example 37.1, “All clocks from Boost.Chrono” writes a string to standard output that looks like the following: 15600100 nanoseconds since thread start-up.

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