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/*******************************************************************************
* statistics.h
*
* ---------------------------------------------------------------------------
* Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
* Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
*
* POV-Ray is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* POV-Ray 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* ---------------------------------------------------------------------------
* POV-Ray is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
* ---------------------------------------------------------------------------
* $File: //depot/public/povray/3.x/source/backend/support/statistics.h $
* $Revision: #1 $
* $Change: 6069 $
* $DateTime: 2013/11/06 11:59:40 $
* $Author: chrisc $
*******************************************************************************/
#ifndef POVRAY_BACKEND_STATISTICS_H
#define POVRAY_BACKEND_STATISTICS_H
#include <vector>
#include "backend/frame.h"
#include "base/types.h"
#include "statspov.h"
namespace pov
{
using namespace pov_base;
template <typename T>
class Counter
{
public:
Counter() { value = 0; } // assumes for all types of T that 0 is a valid assignment
virtual ~Counter() { }
inline T operator+(T other) { return value + other; }
inline T operator-(T other) { return value - other; }
inline T operator++(int) { return value++; }
inline T operator--(int) { return value--; }
inline void operator+=(T other) { value += other; }
inline void operator-=(T other) { value -= other; }
inline const T operator=(T other) { value = other; return value; }
inline operator T() const { return value; }
bool SafeRead(unsigned int maxattempts, T *result) const;
private:
volatile T value;
};
template <typename T, int numElem>
class StatisticsBase
{
public:
StatisticsBase() {}
virtual ~StatisticsBase() {}
inline Counter<T>& operator[](size_t idx) { return counters[idx]; }
inline Counter<T> operator[](size_t idx) const { return counters[idx]; }
void operator+=(const StatisticsBase& other);
StatisticsBase operator+(const StatisticsBase& other);
void clear();
private:
Counter<T> counters[numElem];
};
typedef StatisticsBase<POV_ULONG, MaxIntStat> IntStatistics;
typedef StatisticsBase<double, MaxFPStat> FPStatistics;
class RenderStatistics
{
public:
RenderStatistics() {}
virtual ~RenderStatistics() {}
inline Counter<POV_ULONG>& operator[](IntStatsIndex idx) { return intStats[idx]; }
inline Counter<POV_ULONG> operator[](IntStatsIndex idx) const { return intStats[idx]; }
inline Counter<double>& operator[](FPStatsIndex idx) { return fpStats[idx]; }
inline Counter<double> operator[](FPStatsIndex idx) const { return fpStats[idx]; }
inline operator IntStatistics&() { return intStats; }
inline operator IntStatistics() const { return intStats; }
inline operator FPStatistics&() { return fpStats; }
inline operator FPStatistics() const { return fpStats; }
inline void operator+=(const RenderStatistics& rhs) { intStats += rhs.intStats; fpStats += rhs.fpStats; }
protected:
IntStatistics intStats;
FPStatistics fpStats;
};
}
#endif // POVRAY_BACKEND_STATISTICS_H
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