include/gras/chrono.hpp


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// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.

//Boost chrono has awesome high res timer!
//But its only in very recent boosts,
//so we have this little wrapper...
//now/tps inspired by libnumanuma.

#ifndef INCLUDED_GRAS_CHRONO_HPP
#define INCLUDED_GRAS_CHRONO_HPP

#include <gras/gras.hpp>

namespace gras
{
    typedef long long time_ticks_t;

    //! Get the time now in tick counts
    time_ticks_t time_now(void);

    //! Get the number of ticks per second
    time_ticks_t time_tps(void);

    /*!
     * Timer Accumulate creates a scoped timer object,
     * which adds the time elapsed into the accumulator.
     * Typically, the time elapsed is the absolute
     * destructor time - absolute constructor time.
     * However, the user may call done() to accumulate
     * the time elapsed before the destructor is called.
     */
    struct TimerAccumulate
    {
        //! Create a new timer object given the accumulator
        TimerAccumulate(time_ticks_t &accum);

        //! Destructor accumulates the elapsed time
        ~TimerAccumulate(void);

        //! Accumulate elapsed time before destructor
        void done(void);

        time_ticks_t &accum;
        time_ticks_t start;
        bool is_done;
    };
}

#include <gras/detail/chrono.hpp>

#endif /*INCLUDED_GRAS_CHRONO_HPP*/