Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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Chrono

Boost.Asio provides timers based on the std::chrono facilities via the basic_waitable_timer class template. The typedefs system_timer, steady_timer and high_resolution_timer utilise the standard clocks system_clock, steady_clock and high_resolution_clock respectively.

Support for the std::chrono facilities is automatically enabled for g++ 4.6 and later, when the -std=c++0x or -std=gnu++0x compiler options are used. (Note that, for g++, the draft-standard monotonic_clock is used in place of steady_clock.) Support may be disabled by defining BOOST_ASIO_DISABLE_STD_CHRONO, or explicitly enabled for other compilers by defining BOOST_ASIO_HAS_STD_CHRONO.

When standard chrono is unavailable, Boost.Asio will otherwise use the Boost.Chrono library. The basic_waitable_timer class template may be used with either.


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