Qt Reference Documentation

ClockCycleCounter.h Example File

demos/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 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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