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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\mpi\timer.hpp
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// Copyright (C) 2006 Douglas Gregor
// Use, modification and distribution is subject to the Boost Software // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) /** @file timer.hpp * * This header provides the @c timer class, which provides access to * the MPI timers. */ #ifndef BOOST_MPI_TIMER_HPP #define BOOST_MPI_TIMER_HPP #include
#include
namespace boost { namespace mpi { /** @brief A simple timer that provides access to the MPI timing * facilities. * * The @c timer class is a simple wrapper around the MPI timing * facilities that mimics the interface of the Boost Timer library. */ class BOOST_MPI_DECL timer { public: /** Initializes the timer * * @post @c elapsed() == 0 */ timer(); /** Restart the timer. * * @post @c elapsed() == 0 */ void restart(); /** Return the amount of time that has elapsed since the last * construction or reset, in seconds. */ double elapsed() const; /** Return an estimate of the maximum possible value of * elapsed(). Note that this routine may return too high a value on * some systems. */ double elapsed_max() const; /** Returns the minimum non-zero value that @c elapsed() may * return. This is the resolution of the timer. */ double elapsed_min() const; /** Determines whether the elapsed time values are global times or local processor times. */ static bool time_is_global(); private: double start_time; }; // timer inline timer::timer() { restart(); } inline void timer::restart() { start_time = MPI_Wtime(); } inline double timer::elapsed() const { return MPI_Wtime() - start_time; } inline double timer::elapsed_max() const { return (std::numeric_limits
::max)(); } inline double timer::elapsed_min() const { return MPI_Wtick(); } } } // end namespace boost::mpi #endif // BOOST_MPI_TIMER_HPP
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