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- // manipulate_clock_object.cpp ----------------------------------------------------------//
- // Copyright 2008 Howard Hinnant
- // Copyright 2008 Beman Dawes
- // Copyright 2009 Vicente J. Botet Escriba
- // Distributed under the Boost Software License, Version 1.0.
- // See http://www.boost.org/LICENSE_1_0.txt
- /*
- This code was extracted by Vicente J. Botet Escriba from Beman Dawes time2_demo.cpp which
- was derived by Beman Dawes from Howard Hinnant's time2_demo prototype.
- Many thanks to Howard for making his code available under the Boost license.
- The original code was modified to conform to Boost conventions and to section
- 20.9 Time utilities [time] of the C++ committee's working paper N2798.
- See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2798.pdf.
- time2_demo contained this comment:
- Much thanks to Andrei Alexandrescu,
- Walter Brown,
- Peter Dimov,
- Jeff Garland,
- Terry Golubiewski,
- Daniel Krugler,
- Anthony Williams.
- */
- #include <boost/chrono/chrono.hpp>
- #include <boost/type_traits.hpp>
- #include <iostream>
- using namespace boost::chrono;
- #if defined _MSC_VER
- #pragma warning(push)
- #pragma warning(disable:4100)
- #endif
- void manipulate_clock_object(system_clock clock)
- #if defined _MSC_VER
- #pragma warning(pop)
- #endif
- {
- system_clock::duration delay = milliseconds(5);
- system_clock::time_point start = clock.now();
- while ((clock.now() - start) <= delay) {}
- system_clock::time_point stop = clock.now();
- system_clock::duration elapsed = stop - start;
- std::cout << "paused " << nanoseconds(elapsed).count() << " nanoseconds\n";
- }
- int main()
- {
- manipulate_clock_object(system_clock());
- return 0;
- }
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