102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
/*******************************************************************************
|
|
* statistics.cpp
|
|
*
|
|
* ---------------------------------------------------------------------------
|
|
* 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.cpp $
|
|
* $Revision: #1 $
|
|
* $Change: 6069 $
|
|
* $DateTime: 2013/11/06 11:59:40 $
|
|
* $Author: chrisc $
|
|
*******************************************************************************/
|
|
|
|
#include <vector>
|
|
#include <cassert>
|
|
|
|
// frame.h must always be the first POV file included (pulls in platform config)
|
|
#include "backend/frame.h"
|
|
#include "base/types.h"
|
|
#include "backend/support/statistics.h"
|
|
|
|
// this must be the last file included
|
|
#include "base/povdebug.h"
|
|
|
|
namespace pov
|
|
{
|
|
|
|
const unsigned int kMaxReadAttempts = 10;
|
|
|
|
template <typename T>
|
|
bool Counter<T>::SafeRead(unsigned int maxattempts, T *result) const
|
|
{
|
|
// Use pointers to the value because even though it is declared
|
|
// as volatile, we cannot trust all compilers enough to not
|
|
// optimize the accesses!
|
|
const volatile T *p1 = &value;
|
|
const volatile T *p2 = &value;
|
|
|
|
do
|
|
{
|
|
T val1 = *p1;
|
|
T val2 = *p2;
|
|
|
|
if (val2 == val1)
|
|
{
|
|
*result = val2;
|
|
return true;
|
|
}
|
|
} while (maxattempts--);
|
|
|
|
return false;
|
|
}
|
|
|
|
template <typename T, int numElem>
|
|
void StatisticsBase<T, numElem>::operator+=(const StatisticsBase<T, numElem>& other)
|
|
{
|
|
for (int i = 0; i < numElem; i++)
|
|
{
|
|
T temp;
|
|
other.counters[i].SafeRead(kMaxReadAttempts, &temp);
|
|
counters[i] += temp;
|
|
}
|
|
}
|
|
|
|
template <typename T, int numElem>
|
|
StatisticsBase<T, numElem> StatisticsBase<T, numElem>::operator+(const StatisticsBase<T, numElem>& other)
|
|
{
|
|
StatisticsBase<T, numElem> result(*this);
|
|
|
|
result += other;
|
|
return result;
|
|
}
|
|
|
|
template <typename T, int numElem>
|
|
void StatisticsBase<T, numElem>::clear()
|
|
{
|
|
for (int i = 0; i < numElem; i++)
|
|
counters[i] = 0; // assumes this is a valid operation for type T
|
|
}
|
|
|
|
template class StatisticsBase<POV_ULONG, MaxIntStat>;
|
|
template class StatisticsBase<double, MaxFPStat>;
|
|
|
|
}
|