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qtmultimedia/demos/spectrum/3rdparty/fftreal/stopwatch/ClockCycleCounter.h
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +02:00

125 lines
2.8 KiB
C++

/*****************************************************************************
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 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/