public void addPage(PageTableEntry pte, int step)
{
bool pageAdded = false;
int longestDeltaTime = 0;
int longestDeltaTimeIndex = 0;
int index = 0;
pte.setModified(step);
//see if there is an empty slot (LRU algorithm)
foreach (PhysicalFrame pf in pfList)
{
int newDelta = step - pf.getStepLastReferenced();
if (newDelta > longestDeltaTime)
{
longestDeltaTime = newDelta;
longestDeltaTimeIndex = index;
}
if (pf.isEmpty())
{
pageFaultCounter++;
pte.getPageTable().getOwningProcess().incrementPageFaultCounter();
pf.fillFrame(pte);
pageAdded = true;
break;
}
index++;
}
if (pageAdded)
{
return;
}
pageFaultCounter++;
pte.getPageTable().getOwningProcess().incrementPageFaultCounter();
pfList[longestDeltaTimeIndex].fillFrame(pte);
}
