Qt 5.9 | Qt Multimedia | Spectrum Example | ClockCycleCounter.h Example File

Qt 5.9.4 Reference Documentation

# ClockCycleCounter.h Example File

multimedia/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 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/