- Qt 5.5
- Qt Multimedia
- Spectrum Example
- ClockCycleCounter.h Example File
- Qt 5.5.1 Reference Documentation

# ClockCycleCounter.h Example File

spectrum/3rdparty/fftreal/stopwatch/ClockCycleCounter.h

    /*****************************************************************************

            ClockCycleCounter.h
            Copyright (c) 2003 Laurent de Soras

    Instrumentation class, for accurate time interval measurement. You may have
    to modify the implementation to adapt it to your system and/or compiler.

    --- Legal stuff ---

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    *Tab=3***********************************************************************/

    #if ! defined (stopwatch_ClockCycleCounter_HEADER_INCLUDED)
    #define stopwatch_ClockCycleCounter_HEADER_INCLUDED

    #if defined (_MSC_VER)
            #pragma once
            #pragma warning (4 : 4250) // "Inherits via dominance."
    #endif

    /*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

    #include        "def.h"
    #include        "Int64.h"

    namespace stopwatch
    {

    class ClockCycleCounter
    {

    /*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

    public:

                                                    ClockCycleCounter ();

            stopwatch_FORCEINLINE void
                                                    start ();
            stopwatch_FORCEINLINE void
                                                    stop_lap ();
            Int64                           get_time_total () const;
            Int64                           get_time_best_lap () const;

    /*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

    protected:

    /*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

    private:

            void                            compute_clk_mul ();
            void                            compute_measure_time_total ();
            void                            compute_measure_time_lap ();

            static void             spend_time ();
            static stopwatch_FORCEINLINE Int64
                                                    read_clock_counter ();

            Int64                           _start_time;
            Int64                           _state;
            Int64                           _best_score;

            static Int64    _measure_time_total;
            static Int64    _measure_time_lap;
            static int              _clk_mul;
            static bool             _init_flag;

    /*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

    private:

                                                    ClockCycleCounter (const ClockCycleCounter &other);
            ClockCycleCounter &
                                                    operator = (const ClockCycleCounter &other);
            bool                            operator == (const ClockCycleCounter &other);
            bool                            operator != (const ClockCycleCounter &other);

    };      // class ClockCycleCounter

    }       // namespace stopwatch

    #include        "ClockCycleCounter.hpp"

    #endif  // stopwatch_ClockCycleCounter_HEADER_INCLUDED

    /*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/