public void remove(string name)
{
if (processes.getChain() != null && processes.getChain().getData().getName() == name)
{
node temp = processes.getChain();
processes.setChain(processes.getChain().getNext());
temp = new node();
if (processes.getChain() == null)
{
processes.setTail(null);
}
return;
}
node p1 = processes.getChain();
node p2 = processes.getChain().getNext();
node p3 = new node();
if (p2.getNext() != null)
{
p3 = p2.getNext();
}
while (p2 != null)
{
if (p2.getData().getName() == name)
{
p1.setNext(p2.getNext());
p3.setPrevious(p2.getPrevious());
p2 = new node();
break;
}
p1 = p1.getNext();
p2 = p2.getNext();
}
}
public Scheduler sort(string type)
{
if (processes.getChain() == processes.getTail())
{
return(this);
}
Scheduler left = new Scheduler();
Scheduler right = new Scheduler();
Scheduler result = new Scheduler();
node p = processes.getChain();
node t = processes.getTail();
while (p != t && p.getNext() != t)
{
left.processes.addtoEnd(p.getData());
right.processes.add(t.getData());
p = p.getNext();
t = t.getPrevious();
}
if (p == t)
{
right.processes.add(t.getData());
}
else if (p.getNext() == t)
{
left.processes.addtoEnd(p.getData());
right.processes.add(t.getData());
}
return(merge(left.sort(type), right.sort(type), type));
}
public Process searchByName(string name)
{
if (processes.getChain() == processes.getTail())
{
if (processes.getChain().getData().getName() == name)
{
return(processes.getChain().getData());
}
else
{
Process empty = new Process();
empty.setDuration(-1);
return(empty);
}
}
Scheduler p1 = new Scheduler();
p1 = this.sort("name");
Scheduler left = new Scheduler();
Scheduler right = new Scheduler();
node p = p1.processes.getChain();
node t = p1.processes.getTail();
while (p != t && p.getNext() != t)
{
left.processes.addtoEnd(p.getData());
right.processes.add(t.getData());
p = p.getNext();
t = t.getPrevious();
}
if (p == t)
{
right.processes.add(t.getData());
}
else if (p.getNext() == t)
{
left.processes.addtoEnd(p.getData());
right.add(t.getData());
}
if (right.processes.getChain().getData().getName() == name)
{
return(right.processes.getChain().getData());
}
else if (string.Compare(right.processes.getChain().getData().getName(), name) > 0)
{
return(left.searchByName(name));
}
else
{
return(right.searchByName(name));
}
}
void Priority_Prem(Scheduler s)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
double i = temp.getProcesses().getChain().getData().getArrival();
int counter = 0;
double average = 0;
double working = 0;
Series idle = new Series();
createSeries(idle, i);
while (temp.getProcesses().getChain() != null)
{
Scheduler temp2 = new Scheduler();
double first = temp.getProcesses().getChain().getData().getArrival();
while (temp.getProcesses().getChain() != null && temp.getProcesses().getChain().getData().getArrival() <= first)
{
temp2.add(temp.getProcesses().getChain().getData());
temp.remove(temp.getProcesses().getChain().getData().getName());
}
temp2 = temp2.sort("priority");
node p2 = temp2.getProcesses().getChain();
while (p2 != null)
{
if (temp.getProcesses().getChain() != null && p2.getData().getDuration() + p2.getData().getArrival() > temp.getProcesses().getChain().getData().getArrival())
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", temp.getProcesses().getChain().getData().getArrival() - p2.getData().getArrival());
timeline.Series.Add(barSeries);
barSeries.Color = p2.getData().getColor();
barSeries.Label = p2.getData().getName();
p2.getData().setDuration(p2.getData().getDuration() + p2.getData().getArrival() - temp.getProcesses().getChain().getData().getArrival());
temp.add(p2.getData());
i = temp.getProcesses().getChain().getData().getArrival();
working = working + temp.getProcesses().getChain().getData().getArrival() - p2.getData().getArrival();
}
else
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", p2.getData().getDuration());
barSeries.Color = p2.getData().getColor();
barSeries.Label = p2.getData().getName();
timeline.Series.Add(barSeries);
average = average + i - p2.getData().getArrival();
i = i + p2.getData().getDuration();
counter++;
}
p2 = p2.getNext();
}
}
waiting.Text = " Average Waiting Time = " + (average - working).ToString() + " / " + counter.ToString() + " = " + ((average - working) / counter).ToString();
cpu.clear();
}
void FCFS(Scheduler s)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
node p = temp.getProcesses().getChain();
double i = p.getData().getArrival();
int counter = 0;
double average = 0;
Series idle = new Series();
createSeries(idle, i);
while (p != null)
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", p.getData().getDuration());
barSeries.Label = p.getData().getName();
timeline.Series.Add(barSeries);
average = average + i - p.getData().getArrival();
i = i + p.getData().getDuration();
counter++;
p = p.getNext();
}
waiting.Text = " Average Waiting Time = " + average.ToString() + " / " + counter.ToString() + " = " + (average / counter).ToString();
cpu.clear();
}
void FCFS(Scheduler s)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
node p = temp.getProcesses().getChain();
double i = p.getData().getArrival();
int counter = 0;
double average = 0;
double increment = p.getData().getArrival(), AvgTime = 0, TurnAround = 0;
Series idle = new Series();
createSeries(idle, i);
while (p != null)
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", p.getData().getDuration());
barSeries.Label = p.getData().getName();
timeline.Series.Add(barSeries);
increment += p.getData().getDuration();
average = average + i - p.getData().getArrival();
i = i + p.getData().getDuration();
TurnAround += (increment - p.getData().getArrival());
if (i < numberOfProcesses - 1)
{
AvgTime += (increment - p.getNext().getData().getArrival());
}
counter++;
p = p.getNext();
}
waiting.Top = (numberOfProcesses * 30) + 165;
waiting.Left = 10;
waiting.Size = new System.Drawing.Size(500, 50);
waiting.Text = "Average Waiting Time = " + average.ToString() + " / " + counter.ToString() + " = " + (average / counter).ToString();
waiting.Text += "\nAverage TurnAround Time = " + TurnAround.ToString() + " / " + counter.ToString() + " = " + (TurnAround / counter).ToString();
cpu.clear();
}
void RoundRobin(Scheduler s, double q)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
node p = temp.getProcesses().getChain();
double first = p.getData().getArrival();
double i = p.getData().getArrival();
double j = 0;
int counter = 0;
double average = 0;
double working = 0;
double arrival = 0;
Series idle = new Series();
createSeries(idle, i);
node p1 = temp.getProcesses().getChain();
while (p1 != null)
{
arrival = arrival + p1.getData().getArrival();
p1 = p1.getNext();
}
while (temp.getProcesses().getChain() != null)
{
j = (temp.getProcesses().getChain().getData().getDuration() <= q)? temp.getProcesses().getChain().getData().getDuration(): q;
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", j);
barSeries.Color = temp.getProcesses().getChain().getData().getColor();
barSeries.Label = temp.getProcesses().getChain().getData().getName();
timeline.Series.Add(barSeries);
if (temp.getProcesses().getChain().getData().getDuration() <= q)
{
average = average + i;
i = i + temp.getProcesses().getChain().getData().getDuration();
counter++;
}
else
{
i = i + q;
working = working + q;
temp.getProcesses().getChain().getData().setDuration(temp.getProcesses().getChain().getData().getDuration() - q);
temp.getProcesses().getChain().getData().setArrival(i);
temp.add(temp.getProcesses().getChain().getData());
}
temp.remove(temp.getProcesses().getChain().getData().getName());
temp = temp.sort("arrival");
}
waiting.Text = " Average Waiting Time = ( " + (average - arrival).ToString() + " - " + working.ToString() + " ) / " + counter.ToString() + " = " + ((average - working) / counter).ToString();
cpu.clear();
}
private void Button_Click_new(object sender, EventArgs e)
{
try
{
timeline = new Chart();
waiting = new Label();
Process Pn = new Process();
Pn.setName(newname.Text);
Pn.setArrival(Convert.ToDouble(interrupt.Text));
if (Pn.getArrival() <= 0)
{
throw new System.Exception("Process " + "[ " + Pn.getName().ToString() + " ]" + " Arrival time must be positive integer");
}
Pn.setDuration(Convert.ToDouble(newburst.Text));
if (Pn.getDuration() <= 0)
{
throw new System.Exception("Process " + "[ " + Pn.getName().ToString() + " ]" + " Burst time must be positive integer");
}
Random rnd = new Random(18 * System.Environment.TickCount);
Pn.setColor(System.Drawing.Color.FromArgb(255, rnd.Next(255), rnd.Next(255), rnd.Next(255)));
if (type == "Priority (P)" || type == "Priority (NP)")
{
Pn.setPriority(Int32.Parse(newpriority.Text));
if (Pn.getPriority() <= 0)
{
throw new System.Exception("Process " + "[ " + Pn.getName().ToString() + " ]" + " Priority must be positive integer");
}
}
fillScheduler();
node p = new node();
p = newProcesses.getProcesses().getChain();
while (p != null)
{
cpu.add(p.getData());
p = p.getNext();
}
cpu.add(Pn);
newProcesses.add(Pn);
while (objects.Count > 0)
{
this.Controls.Remove(objects.Pop());
}
objects.Clear();
scheduleCPU();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
void SJF_NPrem(Scheduler s)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
double first = temp.getProcesses().getChain().getData().getArrival();
double i = temp.getProcesses().getChain().getData().getArrival();
int counter = 0;
double average = 0;
Series idle = new Series();
createSeries(idle, i);
while (temp.getProcesses().getChain() != null)
{
Scheduler temp2 = new Scheduler();
while (temp.getProcesses().getChain() != null && temp.getProcesses().getChain().getData().getArrival() <= first)
{
temp2.add(temp.getProcesses().getChain().getData());
temp.remove(temp.getProcesses().getChain().getData().getName());
}
temp2 = temp2.sort("duration");
node p2 = temp2.getProcesses().getChain();
while (p2 != null)
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", p2.getData().getDuration());
barSeries.Label = p2.getData().getName();
timeline.Series.Add(barSeries);
average = average + i - p2.getData().getArrival();
i = i + p2.getData().getDuration();
counter++;
p2 = p2.getNext();
}
first = i;
temp2.clear();
}
waiting.Text = " Average Waiting Time = " + average.ToString() + " / " + counter.ToString() + " = " + (average / counter).ToString();
temp.clear();
cpu.clear();
}
void RoundRobin(Scheduler s, double q)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
node p = temp.getProcesses().getChain();
double first = p.getData().getArrival();
double i = p.getData().getArrival();
double j = 0;
int counter = 0;
double average = 0;
double working = 0;
double arrival = 0;
Series idle = new Series();
createSeries(idle, i);
node p1 = temp.getProcesses().getChain();
List <Process> pro = new List <Process>();
Dictionary <string, int> flags = new Dictionary <string, int>();
double bursts = 0;
while (p1 != null)
{
Process t = p1.getData();
pro.Add(t);
arrival = arrival + p1.getData().getArrival();
bursts += p1.getData().getDuration();
p1 = p1.getNext();
}
for (var k = 0; k < pro.Count(); k++)
{
flags.Add(pro[k].getName(), 0);
}
while (pro.Count() != 0)
{
flags[pro[0].getName()] = 1;
j = (pro[0].getDuration() <= q) ? pro[0].getDuration() : q;
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", j);
barSeries.Color = pro[0].getColor();
barSeries.Label = pro[0].getName();
timeline.Series.Add(barSeries);
if (pro[0].getDuration() <= q)
{
average = average + i;
i = i + pro[0].getDuration();
counter++;
}
else
{
i = i + q;
working = working + q;
pro[0].setDuration(pro[0].getDuration() - q);
pro[0].setArrival(i);
pro.Add(pro[0]);
}
pro.Remove(pro[0]);
for (var k = 0; k < pro.Count() - 1; k++)
{
for (var l = 0; l < pro.Count() - 1 - k; l++)
{
if (pro[l].getArrival() > pro[l + 1].getArrival())
{
Process tmp = pro[l];
pro[l] = pro[l + 1];
pro[l + 1] = tmp;
}
/* else if(pro[l].getArrival() <= i && flags[pro[l].getName()] == 0)
* {
* if((flags[pro[l+1].getName()] == 0&& pro[l].getArrival() > pro[l + 1].getArrival())|| (flags[pro[l + 1].getName()] == 1)) {
* Process tmp = pro[l];
* pro[l] = pro[l + 1];
* pro[l + 1] = tmp;
*
* }
* }*/
}
}
List <Process> t = new List <Process>();
int index = 0;
int flag = 0;
for (var k = 0; k < pro.Count(); k++)
{
if (!(pro[k].getArrival() <= i && flags[pro[k].getName()] == 0))
{
t.Add(pro[k]);
pro.Remove(pro[k]);
k--;
index = k;
flag = 1;
}
}
for (var k = 0; k < pro.Count() - 1; k++)
{
for (var l = 0; l < pro.Count() - 1 - k; l++)
{
if (pro[l].getArrival() > pro[l + 1].getArrival())
{
Process tmp = pro[l];
pro[l] = pro[l + 1];
pro[l + 1] = tmp;
}
}
}
pro.AddRange(t);
/* if (flag == 1)
* {
* for(var k = index; k >= 1; k--)
* {
* pro[k] = pro[k - 1];
* }
* pro[0] = t;
* }*/
}
waiting.Top = (numberOfProcesses * 30) + 165;
waiting.Left = 10;
waiting.Size = new System.Drawing.Size(500, 50);
waiting.Text = "Average Waiting Time = ( " + (average - arrival).ToString() + " - " + working.ToString() + " ) / " + counter.ToString() + " = " + ((average - arrival - working) / counter).ToString();
waiting.Text += "\nAverage TurnAround Time = " + (average - arrival - working + bursts).ToString() + " / " + counter.ToString() + " = " + ((average - arrival - working + bursts) / counter).ToString();
cpu.clear();
}
void Priority_Prem(Scheduler s)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
double i = temp.getProcesses().getChain().getData().getArrival();
int counter = 0;
int flag = 0;
double average = 0;
double working = 0;
Series idle = new Series();
createSeries(idle, i);
List <Process> pro = new List <Process>();
List <Process> departure = new List <Process>();
List <double> depart = new List <double>();
Dictionary <string, int> flags = new Dictionary <string, int>();
node pp = temp.getProcesses().getChain();
double bursttimes = 0;
while (pp != null)
{
Process t = pp.getData();
pro.Add(t);
pp = pp.getNext();
bursttimes += t.getDuration();
}
for (var k = 0; k < pro.Count(); k++)
{
flags.Add(pro[k].getName(), 0);
}
while (pro.Count() != 0)
{
Scheduler temp2 = new Scheduler();
node p1 = temp.getProcesses().getChain();
List <Process> pro2 = new List <Process>();
double first = temp.getProcesses().getChain().getData().getArrival();
double first2 = pro[0].getArrival();
for (var j = 0; j < pro.Count(); j++)
{
if (pro[j].getArrival() <= i)
{
pro2.Add(pro[j]);
pro.Remove(pro[j]);
j--;
}
}
for (var k = 0; k < pro2.Count() - 1; k++)
{
for (var j = 0; j < pro2.Count() - 1 - k; j++)
{
if (pro2[j].getPriority() > pro2[j + 1].getPriority() || (pro2[j].getPriority() == pro2[j + 1].getPriority() && pro2[j].getArrival() > pro2[j + 1].getArrival()))
{
Process tmp = pro2[j];
pro2[j] = pro2[j + 1];
pro2[j + 1] = tmp;
}
}
}
for (var k = 0; k < pro2.Count(); k++)
{
if (pro.Count() != 0 && pro2[k].getDuration() + pro2[k].getArrival() > i &&
true)
{
flags[pro2[k].getName()] = 1;
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
if (pro[0].getArrival() - pro2[k].getArrival() < pro2[k].getDuration())
{
barSeries.Points.AddXY("timeline", pro[0].getArrival() - pro2[k].getArrival());
}
else
{
barSeries.Points.AddXY("timeline", pro2[k].getDuration());
}
barSeries.Color = pro2[k].getColor();
barSeries.Label = pro2[k].getName();
timeline.Series.Add(barSeries);
double dur = pro2[k].getDuration();
if (pro[0].getArrival() - pro2[k].getArrival() < pro2[k].getDuration())
{
pro2[k].setDuration(pro2[k].getDuration() + pro2[k].getArrival() - pro[0].getArrival());
}
else
{
pro2[k].setDuration(pro2[k].getDuration() - pro2[k].getDuration());
}
pro.Add(pro2[k]);
if (pro[0].getArrival() - pro2[k].getArrival() < pro2[k].getDuration())
{
i = pro[0].getArrival();
working = working + pro[0].getArrival() - pro2[k].getArrival();
depart.Add(i);
departure.Add(pro2[k]);
}
else
{
working = working + pro2[k].getDuration();
i = i + pro2[k].getDuration();
depart.Add(i);
departure.Add(pro2[k]);
}
flag = 1;
break;
}
else
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", pro2[k].getDuration());
barSeries.Color = pro2[k].getColor();
barSeries.Label = pro2[k].getName();
timeline.Series.Add(barSeries);
average = average + i - pro2[k].getArrival();
i = i + pro2[k].getDuration();
depart.Add(i);
departure.Add(pro2[k]);
counter++;
flag = 1;
break;
}
}
if (pro2.Count() > 1 && flag == 1)
{
for (var l = 1; l < pro2.Count(); l++)
{
if (pro2[l].getDuration() > 0)
{
pro.Add(pro2[l]);
}
}
flag = 0;
}
pro2.Clear();
}
waiting.Top = (numberOfProcesses * 30) + 165;
waiting.Left = 10;
waiting.Size = new System.Drawing.Size(500, 50);
waiting.Text = "Average Waiting Time = " + (average - working).ToString() + " / " + counter.ToString() + " = " + ((average - working) / counter).ToString();
waiting.Text += "\nAverage TurnAround Time = " + (average - working + bursttimes).ToString() + " / " + counter.ToString() + " = " + ((average - working + bursttimes) / counter).ToString();
temp.clear();
cpu.clear();
}
void Priority_NPrem(Scheduler s)
{
createWaiting();
createTimeline();
Scheduler temp = new Scheduler();
temp = s.sort("arrival");
double first = temp.getProcesses().getChain().getData().getArrival();
double i = temp.getProcesses().getChain().getData().getArrival();
int counter = 0;
double average = 0;
Series idle = new Series();
createSeries(idle, i);
double bursttimes = 0;
int flag = 0;
node pro = temp.getProcesses().getChain();
while (pro != null)
{
bursttimes += pro.getData().getDuration();
pro = pro.getNext();
}
while (temp.getProcesses().getChain() != null)
{
Scheduler temp2 = new Scheduler();
while (temp.getProcesses().getChain() != null && temp.getProcesses().getChain().getData().getArrival() <= first)
{
temp2.add(temp.getProcesses().getChain().getData());
temp.remove(temp.getProcesses().getChain().getData().getName());
}
temp2 = temp2.sort("priority");
node p3 = temp2.getProcesses().getChain();
while (p3 != null)
{
Console.Write(p3.getData().getName() + "has piority" + p3.getData().getPriority() + "\n");
p3 = p3.getNext();
}
Console.Write("first is" + first + "\n");
Console.Write("***************\n");
node p2 = temp2.getProcesses().getChain();
while (p2 != null)
{
Series barSeries = new Series();
barSeries.ChartType = SeriesChartType.StackedBar;
barSeries.XValueType = ChartValueType.String;
barSeries.Points.AddXY("timeline", p2.getData().getDuration());
barSeries.Label = p2.getData().getName();
timeline.Series.Add(barSeries);
average = average + i - p2.getData().getArrival();
i = i + p2.getData().getDuration();
counter++;
if (temp.getProcesses().getChain() != null)
{
temp2.remove(p2.getData().getName());
flag = 1;
p2 = p2.getNext();
break;
}
p2 = p2.getNext();
}
first = i;
if (flag == 1)
{
while (p2 != null)
{
temp.add(p2.getData());
p2 = p2.getNext();
}
flag = 0;
}
temp2.clear();
}
waiting.Top = (numberOfProcesses * 30) + 165;
waiting.Left = 10;
waiting.Size = new System.Drawing.Size(500, 50);
waiting.Text = "Average Waiting Time = " + average.ToString() + " / " + counter.ToString() + " = " + (average / counter).ToString();
waiting.Text += "\nAverage TurnAround Time = " + (average + bursttimes).ToString() + " / " + counter.ToString() + " = " + ((average + bursttimes) / counter).ToString();
temp.clear();
cpu.clear();
}
public Scheduler merge(Scheduler l1, Scheduler l2, string type)
{
Scheduler merged = new Scheduler();
node p1 = l1.processes.getChain();
node p2 = l2.processes.getChain();
if (type == "arrival")
{
while (p1 != null && p2 != null)
{
if (p1.getData().getArrival() <= p2.getData().getArrival())
{
merged.processes.addtoEnd(p1.getData());
p1 = p1.getNext();
}
else
{
merged.processes.addtoEnd(p2.getData());
p2 = p2.getNext();
}
}
}
else if (type == "duration")
{
while (p1 != null && p2 != null)
{
if (p1.getData().getDuration() <= p2.getData().getDuration())
{
merged.processes.addtoEnd(p1.getData());
p1 = p1.getNext();
}
else
{
merged.processes.addtoEnd(p2.getData());
p2 = p2.getNext();
}
}
}
else if (type == "priority")
{
while (p1 != null && p2 != null)
{
if (p1.getData().getPriority() <= p2.getData().getPriority())
{
merged.processes.addtoEnd(p1.getData());
p1 = p1.getNext();
}
else
{
merged.processes.addtoEnd(p2.getData());
p2 = p2.getNext();
}
}
}
if (p1 != null)
{
while (p1 != null)
{
merged.processes.addtoEnd(p1.getData());
p1 = p1.getNext();
}
}
if (p2 != null)
{
while (p2 != null)
{
merged.processes.addtoEnd(p2.getData());
p2 = p2.getNext();
}
}
return(merged);
}
