conservativeGovernor.cpp

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#include "conservativeGovernor.h"

#include <algorithm>

#include <utils/log.h>

#include <scheduler/time.h>
#include <scheduler/processor.h>
#include <scheduler/system.h>

using namespace Scheduler;

ConservativeGovernor::ConservativeGovernor() : 
    maxFreq(System::getInstance()->getProc()->getMaxFreq()), minFreq(System::getInstance()->getProc()->getMinFreq())
{
}

void ConservativeGovernor::updateFreq(Processor *proc, Queue * /*readyQueue*/)
{
    /*TODO not finished*/
    double currentFreq = proc->getFreq();
    if (proc->getUsage() > upThreshold)
    {
        currentFreq = std::min(maxFreq, currentFreq + freqStep*maxFreq);
    }
    else if (proc->getUsage() < downThreshold)
    {
        currentFreq = std::max(minFreq, currentFreq - freqStep*maxFreq);
    }
    proc->setFreq(currentFreq);
}

bool ConservativeGovernor::freqChangeEvent(TriggeringEvent trigger)
{
    return (trigger == freqUpdate);
}

std::string ConservativeGovernor::getName()
{
    return "ConservativeGovernor";
}