performance.cpp

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#include "performance.h"
#include "GameClass.h"

CStopWatch::CStopWatch(Logger* prmLogger)
{
        logger = prmLogger;

        fm_min = 9999.0;
        fm_max = fm_avg = 0.0;
        fm_count = 0;

        start.QuadPart = 0;
        stop.QuadPart = 0;
        QueryPerformanceFrequency(&frequency);
}

double CStopWatch::LIToSecs(LARGE_INTEGER & L)
{
        return ((double)L.QuadPart / (double)frequency.QuadPart);
}

void CStopWatch::startTimer()
{
        QueryPerformanceCounter(&start);
}

void CStopWatch::stopTimer()
{
        QueryPerformanceCounter(&stop);
        getElapsedTime();
}

void CStopWatch::getElapsedTime()
{
        LARGE_INTEGER time;
        time.QuadPart = stop.QuadPart - start.QuadPart;
        double elapsed = LIToSecs(time);
        if (elapsed < fm_min)
                fm_min = elapsed;
        if (elapsed > fm_max)
                fm_max = elapsed;
        fm_avg += elapsed;
        fm_count++;
}

void CStopWatch::Report(const char* caption) const
{
        char msg[99];
        sprintf_s(msg, sizeof(msg), "------%s------", caption);
        logger->Log(msg);
        sprintf_s(msg, sizeof(msg), "Min:  %f", fm_min);
        logger->Log(msg);
        sprintf_s(msg, sizeof(msg), "Max:  %f", fm_max);
        logger->Log(msg);
        sprintf_s(msg, sizeof(msg), "Avg:  %f", fm_avg / fm_count);
        logger->Log(msg);
        sprintf_s(msg, sizeof(msg), "Frame Move Running on %f FPS avg", (1.0f / (fm_avg / fm_count)));
        logger->Log(msg);
}