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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#ifndef SMOOTH_AVERAGE_H
#define SMOOTH_AVERAGE_H
#ifdef _WIN32
#pragma once
#endif
#include "utldict.h"
// Use this macro around any value, and it'll queue up the results given to it nTimes and
// provide a running average.
#define SMOOTH_AVERAGE( value, nCount ) CalcSmoothAverage( value, nCount, __FILE__, __LINE__ )
// Same as their counterpart functions but they return more info in a CTimingInfo structure.
#define SMOOTH_AVERAGE_STRUCT( value, nCount ) CalcSmoothAverage_Struct( value, nCount, __FILE__, __LINE__ )
#define SUM_OVER_TIME_INTERVAL_STRUCT( value, nSeconds ) SumOverTimeInterval_Struct( value, nSeconds, __FILE__, __LINE__ )
template< class T >
class CTimingInfo
{
public:
T m_AverageValue; // Note: this will be the SUM of the values if using SUM_OVER_TIME_INTERVAL.
// The high and low points for m_AverageValue over the time interval.
T m_HighAverage;
T m_LowAverage;
// The high and low points for the value itself over the time interval.
T m_HighValue;
T m_LowValue;
};
template< class T >
class CAveragesInfo
{
public:
class CEntry
{
public:
T m_Average;
T m_Value;
};
public:
CUtlVector< CEntry > m_Values;
int m_iCurValue;
};
template< class T >
class CAveragesInfo_TimeBased
{
public:
class CEntry
{
public:
CCycleCount m_Time; // When this sample was taken.
T m_Value;
T m_Average;
};
CUtlVector<CEntry> m_Values;
};
#if 0
template< class T >
inline CTimingInfo< T > CalcSmoothAverage_Struct( const T &value, int nTimes, const char *pFilename, int iLine )
{
// Find an entry at this file and line.
char fullStr[1024];
Q_snprintf( fullStr, sizeof( fullStr ), "%s_%i", pFilename, iLine );
int index = s_SmoothAverages.Find( fullStr );
CAveragesInfo<T> *pInfo;
if ( index == s_SmoothAverages.InvalidIndex() )
{
pInfo = new CAveragesInfo<T>;
index = s_SmoothAverages.Insert( fullStr, pInfo );
}
else
{
pInfo = (CAveragesInfo<T>*)s_SmoothAverages[index];
}
// Add the new value.
int newValueIndex;
CAveragesInfo< T >::CEntry entry;
entry.m_Value = value;
if ( pInfo->m_Values.Count() < nTimes )
{
newValueIndex = pInfo->m_Values.AddToTail( entry );
pInfo->m_iCurValue = 0;
}
else
{
newValueIndex = pInfo->m_iCurValue;
pInfo->m_Values[pInfo->m_iCurValue] = entry;
pInfo->m_iCurValue = (pInfo->m_iCurValue+1) % pInfo->m_Values.Count();
}
CTimingInfo< T > info;
info.m_AverageValue = pInfo->m_Values[0].m_Value;
info.m_HighAverage = pInfo->m_Values[0].m_Average;
info.m_LowAverage = pInfo->m_Values[0].m_Average;
info.m_HighValue = pInfo->m_Values[0].m_Value;
info.m_LowValue = pInfo->m_Values[0].m_Value;
for ( int i=1; i < pInfo->m_Values.Count(); i++ )
{
if ( i != newValueIndex )
{
info.m_HighAverage = max( pInfo->m_Values[i].m_Average, info.m_HighAverage );
info.m_LowAverage = min( pInfo->m_Values[i].m_Average, info.m_LowAverage );
}
info.m_HighValue = max( pInfo->m_Values[i].m_Value, info.m_HighValue );
info.m_LowValue = min( pInfo->m_Values[i].m_Value, info.m_LowValue );
info.m_AverageValue += pInfo->m_Values[i].m_Value;
}
info.m_AverageValue /= pInfo->m_Values.Count();
pInfo->m_Values[newValueIndex].m_Average = info.m_AverageValue;
return info;
}
#endif
template< class T >
inline T CalcSmoothAverage( const T &value, int nTimes, const char *pFilename, int iLine )
{
CTimingInfo< T > info = CalcSmoothAverage_Struct( value, nTimes, pFilename, iLine );
return info.m_AverageValue;
};
template< class T >
inline CTimingInfo< T > SumOverTimeInterval_Struct( const T &value, float nSeconds, const char *pFilename, int iLine )
{
static CUtlDict< CAveragesInfo_TimeBased< T >*, int > s_SmoothAverages;
char fullStr[1024];
Q_snprintf( fullStr, sizeof( fullStr ), "%s_%i", pFilename, iLine );
int index = s_SmoothAverages.Find( fullStr );
CAveragesInfo_TimeBased<T> *pInfo;
if ( index == s_SmoothAverages.InvalidIndex() )
{
pInfo = new CAveragesInfo_TimeBased<T>;
index = s_SmoothAverages.Insert( fullStr, pInfo );
}
else
{
pInfo = s_SmoothAverages[index];
}
// Get the current time now.
CCycleCount curTime;
curTime.Sample();
// Get rid of old samples.
while ( pInfo->m_Values.Count() > 0 && (curTime.GetSeconds() - pInfo->m_Values[0].m_Time.GetSeconds()) > nSeconds )
pInfo->m_Values.Remove( 0 );
// Add on the new sample.
typename CAveragesInfo_TimeBased< T >::CEntry newEntry;
newEntry.m_Time = curTime;
newEntry.m_Value = value;
int newValueIndex = pInfo->m_Values.AddToTail( newEntry );
CTimingInfo< T > info;
info.m_AverageValue = pInfo->m_Values[0].m_Value;
info.m_HighAverage = pInfo->m_Values[0].m_Average;
info.m_LowAverage = pInfo->m_Values[0].m_Average;
info.m_HighValue = pInfo->m_Values[0].m_Value;
info.m_LowValue = pInfo->m_Values[0].m_Value;
for ( int i=1; i < pInfo->m_Values.Count(); i++ )
{
if ( i != newValueIndex )
{
info.m_HighAverage = max( pInfo->m_Values[i].m_Average, info.m_HighAverage );
info.m_LowAverage = min( pInfo->m_Values[i].m_Average, info.m_LowAverage );
}
info.m_HighValue = max( pInfo->m_Values[i].m_Value, info.m_HighValue );
info.m_LowValue = min( pInfo->m_Values[i].m_Value, info.m_LowValue );
info.m_AverageValue += pInfo->m_Values[i].m_Value;
}
info.m_AverageValue /= pInfo->m_Values.Count();
pInfo->m_Values[newValueIndex].m_Average = info.m_AverageValue;
return info;
}
template< class T >
inline CTimingInfo< T > SumOverTimeInterval( const T &value, float nSeconds, const char *pFilename, int iLine )
{
CTimingInfo< T > info = SumOverTimeInterval_Struct( value, nSeconds, pFilename, iLine );
return info.m_AverageValue;
}
#endif // SMOOTH_AVERAGE_H
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