private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Visible == true)
{
if (textBox1.Text == "")
{
MessageBox.Show("Please enter quantum for Round Robin algorithm.");
return;
}
try
{
int x = Int32.Parse(textBox1.Text);
if (x <= 0)
{
MessageBox.Show("Quantum must be positive.");
return;
}
if (x > 20)
{
MessageBox.Show("Quantum must be less than 20.");
return;
}
}
catch
{
MessageBox.Show("Quantum must be an integer.");
return;
}
}
Algorithm[] algos = { new FCFS(), new SJF(), new SRTF(), new RR() };
for (int i = 0; i < algos.Length; i++)
{
float avgWT = 0, avgTT = 0;
if (algos[i].GetType() != algo.GetType())
{
string fileName = algo.FileName;
algos[i].loadProcesses(fileName);
algos[i].Overhead = algo.Overhead;
if (algos[i] is RR)
{
RR r = (RR)algos[i];
r.Quantum = Int32.Parse(textBox1.Text);
}
DisplayForm x = new DisplayForm(algos[i]);
while (x.step()) ;
avgWT = x.waitingTime();
avgTT = x.turnaroundTime();
}
else
{
int n = listView2.Items.Count - 1;
avgWT = float.Parse(listView2.Items[n].SubItems[1].Text);
avgTT = float.Parse(listView2.Items[n].SubItems[2].Text);
}
if (listView1.Items[0].SubItems.Count == 5)
{
listView1.Items[0].SubItems[i + 1].Text = avgWT.ToString();
listView1.Items[1].SubItems[i + 1].Text = avgTT.ToString();
}
else
{
listView1.Items[0].SubItems.Add(avgWT.ToString());
listView1.Items[1].SubItems.Add(avgTT.ToString());
}
listView1.Visible = true;
}
}
private void button2_Click(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex == -1)
{
MessageBox.Show("You must select an input file first.");
return;
}
if (comboBox2.SelectedIndex == -1)
{
MessageBox.Show("You must select a scheduling strategy first.");
return;
}
int fileIndex = comboBox1.SelectedIndex;
int algoIndex = comboBox2.SelectedIndex;
InputForm i = new InputForm((String)files[fileIndex]);
if (!i.checkFormat())
{
MessageBox.Show("The file you selected has a wrong format. Please edit it first.");
i.External = false;
i.ShowDialog();
InputForm j = new InputForm((String)files[fileIndex]);
if (!j.checkFormat())
{
MessageBox.Show("Please choose another input file.");
return;
}
}
if (textBox1.Text == "")
{
MessageBox.Show("Please choose an overhead for switching processes.");
return;
}
try
{
int k = Int32.Parse(textBox1.Text);
if (k <= 0)
{
MessageBox.Show("Overhead must be positive.");
return;
}
if (k > 20)
{
MessageBox.Show("Overhead should not exceed 20.");
return;
}
}
catch
{
MessageBox.Show("Overhead must be an integer.");
return;
}
Algorithm algorithm = newAlgorithm(algoIndex);
algorithm.loadProcesses((String)files[fileIndex]);
algorithm.Overhead = Int32.Parse(textBox1.Text);
String text = "";
switch (algoIndex)
{
case 0:
text = "First come first serve strategy";
break;
case 1:
text = "Shortest job first strategy";
break;
case 2:
text = "Shortest remaining time strategy";
break;
case 3:
text = "Round robin strategy";
break;
default:
text = "";
break;
}
DisplayForm x = new DisplayForm(algorithm);
x.Text = text;
x.Show();
}
