public override Process Step(MultiLevelFeedbackQueueScheduler sender)
{
if (currentProcess != null)
{
if (currentProcess.remainingBurstTime <= 0)
{
currentProcess.endStep = sender.step;
finishedProcesses.Add(currentProcess);
if (processQueue.Count == 0)
{
currentProcess = null;
if (finishedProcesses.Count == allProcesses.Count)
{
isEnded = true;
}
}
else
{
currentProcess = processQueue.Dequeue();
}
}
if (currentProcess != null)
{
currentProcess.remainingBurstTime -= 1;
}
}
return(currentProcess);
}
public StepResponse(Process _process, bool _isMLFQ, MultiLevelFeedbackQueueScheduler _sender, bool _isPageDemanded, bool _isEnded)
{
process = _process;
isMLFQ = _isMLFQ;
sender = _sender;
isPageDemanded = _isPageDemanded;
isEnded = _isEnded;
}
public override Process Step(MultiLevelFeedbackQueueScheduler sender)
{
processesToRemove = new List <Process>();
foreach (Process process in sender.unStartedProcesses)
{
if (process.arrivalTime == sender.step)
{
sender.queues[0].processQueue.Enqueue(process);
processesToRemove.Add(process);
}
}
foreach (var process in processesToRemove)
{
sender.unStartedProcesses.Remove(process);
}
if (currentProcess != null)
{
if (currentProcess.remainingBurstTime <= 0)
{
currentProcess.endStep = sender.step;
sender.finishedProcesses.Add(currentProcess);
currentProcess = null;
foreach (var sch in sender.queues)
{
if (sch.processQueue.Count > 0)
{
sender.currentQueue = sch;
}
}
if (processQueue.Count == 0)
{
currentProcess = null;
if (finishedProcesses.Count == allProcesses.Count)
{
isEnded = true;
}
return(null);
}
else
{
currentProcess = processQueue.Dequeue();
}
duration = 0;
}
else if (duration >= quantum)
{
processQueue.Enqueue(currentProcess);
currentProcess = processQueue.Dequeue();
duration = 0;
}
currentProcess.remainingBurstTime -= 1;
duration++;
}
return(currentProcess);
}
private void buttonSetMLFQ_Click(object sender, EventArgs e)
{
AddMLFQForm pop = new AddMLFQForm();
if (pop.ShowDialog() == DialogResult.OK)
{
string name = "MLFQ-" + pop.queues[0].name + "-" + pop.queues[1].name + "-" + pop.queues[2].name;
List <MultiLevelableScheduler> list = new List <MultiLevelableScheduler>();
listBoxMLFQ.Items.Clear();
for (int i = 0; i < 3; i++)
{
list.Add(pop.queues[i]);
listBoxMLFQ.Items.Add(pop.queues[i].name);
}
Scheduler tempScheduler = new MultiLevelFeedbackQueueScheduler(name, list, FIFO, LRU);
simulationManager.schedulers.Clear();
simulationManager.schedulers.Add(tempScheduler);
}
else
{
//do nothing
}
}
private void schedulersDataGrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex == 0)
{
if (e.RowIndex == schedulersDataGrid.Rows.Count - 1)
{
AddSchedulerForm pop = new AddSchedulerForm();
if (pop.ShowDialog() == DialogResult.OK)
{
if (pop.scheduler == schedulerTypes.RoundRobbin)
{
string name = "RR(Q:" + pop.value + ")";
Scheduler tempScheduler = new RoundRobinScheduler(name, pop.value, new List <Process>(), pop.color);
simulationManager.schedulers.Add(tempScheduler);
int tempIndex = schedulersDataGrid.Rows.Add("x", name, string.Empty, tempScheduler);
schedulersDataGrid[2, tempIndex].Style.BackColor =
schedulersDataGrid[2, tempIndex].Style.SelectionBackColor = pop.color;
}
else if (pop.scheduler == schedulerTypes.FirstComeFirstServe)
{
string name = "FCFS";
Scheduler tempScheduler = new FirstComeFirstServeScheduler(name, new List <Process>(), pop.color);
simulationManager.schedulers.Add(tempScheduler);
int tempIndex = schedulersDataGrid.Rows.Add("x", name, string.Empty, tempScheduler);
schedulersDataGrid[2, tempIndex].Style.BackColor =
schedulersDataGrid[2, tempIndex].Style.SelectionBackColor = pop.color;
}
else if (pop.scheduler == schedulerTypes.HightstResponseRatioNext)
{
string name = "HRRN";
Scheduler tempScheduler = new HighestResponseRatioNextScheduler(name, new List <Process>(), pop.color);
simulationManager.schedulers.Add(tempScheduler);
int tempIndex = schedulersDataGrid.Rows.Add("x", name, string.Empty, tempScheduler);
schedulersDataGrid[2, tempIndex].Style.BackColor =
schedulersDataGrid[2, tempIndex].Style.SelectionBackColor = pop.color;
}
else if (pop.scheduler == schedulerTypes.EarliestDeadlineFirst)
{
string name = "EDF(D=x" + pop.value + ")";
Scheduler tempScheduler = new EarliestDeadlineFirstScheduler(name, new List <Process>(), pop.color, pop.value);
simulationManager.schedulers.Add(tempScheduler);
int tempIndex = schedulersDataGrid.Rows.Add("x", name, string.Empty, tempScheduler);
schedulersDataGrid[2, tempIndex].Style.BackColor =
schedulersDataGrid[2, tempIndex].Style.SelectionBackColor = pop.color;
}
else if (pop.scheduler == schedulerTypes.ShortestJobFirst)
{
string name = "SJF";
Scheduler tempScheduler = new EarliestDeadlineFirstScheduler(name, new List <Process>(), pop.color);
simulationManager.schedulers.Add(tempScheduler);
int tempIndex = schedulersDataGrid.Rows.Add("x", name, string.Empty, tempScheduler);
schedulersDataGrid[2, tempIndex].Style.BackColor =
schedulersDataGrid[2, tempIndex].Style.SelectionBackColor = pop.color;
}
else if (pop.scheduler == schedulerTypes.MultilevelFeedbackQueue)
{
string name = "MLFQ-" + pop.sch[0].name + "-" + pop.sch[1].name + "-" + pop.sch[2].name;
List <MultiLevelableScheduler> list = new List <MultiLevelableScheduler>();
for (int i = 0; i < 3; i++)
{
list.Add(pop.sch[i]);
}
Scheduler tempScheduler = new MultiLevelFeedbackQueueScheduler(name, pop.color, list);
simulationManager.schedulers.Add(tempScheduler);
int tempIndex = schedulersDataGrid.Rows.Add("x", name, string.Empty, tempScheduler);
schedulersDataGrid[2, tempIndex].Style.BackColor =
schedulersDataGrid[2, tempIndex].Style.SelectionBackColor = pop.color;
}
}
}
else
{
simulationManager.schedulers.RemoveAt(e.RowIndex);
schedulersDataGrid.Rows.RemoveAt(e.RowIndex);
}
refreshStepDataGrid();
}
else if (e.ColumnIndex == 1 && e.RowIndex < schedulersDataGrid.Rows.Count - 1)
{
AddSchedulerForm pop = new AddSchedulerForm();
if (pop.ShowDialog() == DialogResult.OK)
{
if (pop.scheduler == schedulerTypes.RoundRobbin)
{
string name = "RR(Q:" + pop.value + ")";
Scheduler previousScheduler = simulationManager.schedulers[e.RowIndex];
Scheduler tempScheduler = new RoundRobinScheduler(name, pop.value, null, previousScheduler.graphColor);
simulationManager.schedulers[e.RowIndex] = tempScheduler;
schedulersDataGrid.Rows[e.RowIndex].Cells[1].Value = name;
}
else if (pop.scheduler == schedulerTypes.EarliestDeadlineFirst)
{
string name = "EDF(D=x" + pop.value + ")";
Scheduler previousScheduler = simulationManager.schedulers[e.RowIndex];
Scheduler tempScheduler = new EarliestDeadlineFirstScheduler(name, null, previousScheduler.graphColor, pop.value);
simulationManager.schedulers[e.RowIndex] = tempScheduler;
schedulersDataGrid.Rows[e.RowIndex].Cells[1].Value = name;
}
}
refreshStepDataGrid();
}
else if (e.ColumnIndex == 2 && e.RowIndex < schedulersDataGrid.Rows.Count - 1)
{
if (colorDialog1.ShowDialog() == DialogResult.OK)
{
simulationManager.schedulers[e.RowIndex].graphColor = colorDialog1.Color;
schedulersDataGrid[2, e.RowIndex].Style.BackColor =
schedulersDataGrid[2, e.RowIndex].Style.SelectionBackColor = colorDialog1.Color;
}
}
}
public StepResponse(Process _process, bool _isMLFQ, MultiLevelFeedbackQueueScheduler _sender)
{
process = _process;
isMLFQ = _isMLFQ;
sender = _sender;
}
public abstract Process Step(MultiLevelFeedbackQueueScheduler sender);
