/**********************************************************************
*********************************************************************/
void B_Set_Mbit_Clicked(object sender, EventArgs e)
{
if (currentStep > -1)
{
//set m-bit of current page
ram[currentStep, indexCurrentPage, 2] = 1;
ram[currentStep, 0, 5] = 1;
}
PageReplacementStrategiesDraw.Paint();//Update Canvas
}
//METHODS
/**********************************************************************
*********************************************************************/
void B_Set_Rbit_Clicked(object sender, EventArgs e)
{
if (currentStep > -1)
{
//Set r-bit of current page
ram[currentStep, indexCurrentPage, 1] = 1;
//ram[currentStep, 0, 4] = 1;
PageReplacementStrategiesDraw.Paint();//Update Canvas
}
}
/**********************************************************************
*********************************************************************/
void B_Reset_Rbits_Clicked(object sender, EventArgs e)
{
if (currentStep > -1)
{
//reset all r-bits of current step in ram
for (int j = 0; j <= ram.GetUpperBound(1); j++)
{
if (ram[currentStep, j, 1] == 1)
{
ram[currentStep, j, 1] = 0; //r-bit reset
ram[currentStep, j, 4] = 1; //mark r-bit as reset
}
}
PageReplacementStrategiesDraw.Paint();//Update Canvas
}
}
/**********************************************************************
*********************************************************************/
void B_Next_Clicked(object sender, EventArgs e)
{
currentStep++;
currentPage = SequenceList.First();
SequenceList.Remove(SequenceList.First());
switch (strategy)
{
case "Optimal Strategy":
Optimal();
break;
case "FIFO":
Fifo();
break;
case "FIFO Second Chance":
FifoSecond();
break;
case "RNU FIFO":
Rnu();
b_Reset_Rbits.IsEnabled = true;
b_Set_Rbit.IsEnabled = true;
b_Set_Mbit.IsEnabled = true;
break;
case "RNU FIFO Second Chance":
RnuSecond();
b_Reset_Rbits.IsEnabled = true;
b_Set_Rbit.IsEnabled = true;
b_Set_Mbit.IsEnabled = true;
break;
}
PageReplacementStrategiesDraw.Paint();//Update Canvas
b_Restart.IsEnabled = true;
//disable next button if the sequence was processed entirely
if (currentStep == sequenceLength - 1)
{
b_Next.IsEnabled = false;
}
}