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