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#ifndef __AVGDIFFTRACKER_H
#define __AVGDIFFTRACKER_H
#include "Common.h"
#define AVG_DIFF_COUNT 500
class AvgDiffTracker
{
public:
AvgDiffTracker() : total(0), index(0), average(0) { memset(&tab, 0, sizeof(tab)); max[0] = 0; max[1] = 0; }
uint32 getAverage()
{
return average;
}
uint32 getTimeWeightedAverage()
{
if (tab[AVG_DIFF_COUNT-1] == 0)
return 0;
uint32 sum = 0, weightsum = 0;
for (uint32 i=0; i<AVG_DIFF_COUNT; ++i)
{
sum += tab[i]*tab[i];
weightsum += tab[i];
}
return sum/weightsum;
}
uint32 getMax()
{
return max[0] > max[1] ? max[0] : max[1];
}
void Update(uint32 diff)
{
if (diff < 1)
diff = 1;
total -= tab[index];
total += diff;
tab[index] = diff;
if (diff > max[0])
max[0] = diff;
if (++index >= AVG_DIFF_COUNT)
{
index = 0;
max[1] = max[0];
max[0] = 0;
}
if (tab[AVG_DIFF_COUNT-1])
average = total/AVG_DIFF_COUNT;
else if (index)
average = total/index;
else
average = 0;
}
private:
uint32 tab[AVG_DIFF_COUNT];
uint32 total;
uint32 index;
uint32 max[2];
uint32 average;
};
extern AvgDiffTracker avgDiffTracker;
extern AvgDiffTracker lfgDiffTracker;
extern AvgDiffTracker devDiffTracker;
#endif
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