private void button4_Click(object sender, EventArgs e)
{
string procrssName = textBox4.Text;
int DeAllocate;
for (DeAllocate = 0; DeAllocate <= ProcessesList.Count() - 1; DeAllocate++)
{
if (ProcessesList[DeAllocate].process_name == procrssName)
{
groupBoxMEM.Controls.Clear();
hole backhole = new hole();
backhole.start = (ProcessesList[DeAllocate]).p_start_address;
backhole.size = (ProcessesList[DeAllocate]).Process_size;
backhole.end = (ProcessesList[DeAllocate]).End_p_address;
ListOfHoles.Add(backhole);
ListOfHoles.Sort((x, y) => x.start.CompareTo(y.start));
ProcessesList.RemoveAt(DeAllocate);
// Drawing1(ListOfHoles);
Drawing(ListOfHoles);
DrawingProcesses(ProcessesList);
}
}
}
public void Allocating(string Technique, Process p)
{
////Fist Fit Function
hole myhole = new hole();
int n = 0;
int what = 0;
if (Technique == "First Fit")
{
for (n = 0; n < ListOfHoles.Count; n++)
{
if (ListOfHoles[n].size >= p.Process_size)
{
myhole = ListOfHoles[n];
what = 0;
break;
}
what = 1;
}
if (what == 0)
{
/// process take the hole information :
p.p_start_address = myhole.start;
p.End_p_address = p.p_start_address + p.Process_size;
///update the hole information :
ListOfHoles[n].start += p.Process_size;
ListOfHoles[n].size -= p.Process_size;
//Drawing the holes
Drawing(ListOfHoles);
//drawing the new process :
Label allocateLabel = new Label();
allocateLabel.Location = new Point(0, 2 * p.p_start_address);
allocateLabel.Height = 2 * p.Process_size;
allocateLabel.BackColor = System.Drawing.Color.Red;
allocateLabel.BorderStyle = BorderStyle.Fixed3D;
allocateLabel.Width = groupBoxMEM.Width;
allocateLabel.Text = p.process_name;
groupBoxMEM.Controls.Add(allocateLabel);
//// draw Label :starting address of process
int firstlabel = 100;
Label firstlabelL = new Label();
firstlabelL.Location = new Point(620, firstlabel + 2 * (p.p_start_address + p.Process_size));
firstlabelL.Text = p.End_p_address.ToString();
this.Controls.Add(firstlabelL);
}
if (what == 1)
{
Drawing(ListOfHoles);
MessageBox.Show("Sorry.There is not enough space. Please remove a process from Memory and try again . ");
}
}
//////Best FIT
else if (Technique == "Best Fit")
{
List <hole> copy = new List <hole>(ListOfHoles);
copy = ListOfHoles.ToList();
copy.Sort((x, y) => x.size.CompareTo(y.size));
for (n = 0; n < copy.Count; n++)
{
if (copy[n].size >= p.Process_size)
{
myhole = copy[n];
what = 0;
break;
}
what = 1;
}
if (what == 0)
{
p.p_start_address = copy[n].start;
p.End_p_address = p.p_start_address + p.Process_size;
///update the hole information :
copy[n].start += p.Process_size;
copy[n].size -= p.Process_size;
//Drawing the holes
Drawing(copy);
//drawing the new process :
Label allocateLabel = new Label();
allocateLabel.Location = new Point(0, 2 * p.p_start_address);
allocateLabel.Height = 2 * p.Process_size;
allocateLabel.BackColor = System.Drawing.Color.Red;
allocateLabel.BorderStyle = BorderStyle.Fixed3D;
allocateLabel.Width = groupBoxMEM.Width;
allocateLabel.Text = p.process_name;
groupBoxMEM.Controls.Add(allocateLabel);
///update original hole info
int v = 0;
int k = 0;
for (v = 0; v < ListOfHoles.Count; v++)
{
for (k = v; k < ListOfHoles.Count; k++)
{
if (ListOfHoles[v].size == copy[k].size)
{
break;
}
// break;
}
break;
}
ListOfHoles[v].size = copy[k].size;
ListOfHoles[v].start = copy[k].start;
//// draw Label :starting address of process
int firstlabel = 100;
Label firstlabelL = new Label();
firstlabelL.Location = new Point(620, firstlabel + 2 * (p.p_start_address + p.Process_size));
firstlabelL.Text = p.End_p_address.ToString();
this.Controls.Add(firstlabelL);
}
if (what == 1)
{
Drawing(ListOfHoles);
MessageBox.Show("Sorry.There is not enough space. Please remove a process from Memory and try again . ");
}
}
///Worst Fit :
///
else if (Technique == "Worst Fit")
{
List <hole> copy = new List <hole>(ListOfHoles);
copy = ListOfHoles.ToList();
copy.Sort((x, y) => x.size.CompareTo(y.size));
n = copy.Count() - 1;
if (copy[n].size >= p.Process_size)
{
myhole = copy[n];
p.p_start_address = copy[n].start;
p.End_p_address = p.p_start_address + p.Process_size;
///update the hole information :
copy[n].start += p.Process_size;
copy[n].size -= p.Process_size;
//Drawing the holes
Drawing(copy);
//drawing the new process :
Label allocateLabel = new Label();
allocateLabel.Location = new Point(0, 2 * p.p_start_address);
allocateLabel.Height = 2 * p.Process_size;
allocateLabel.BackColor = System.Drawing.Color.Red;
allocateLabel.BorderStyle = BorderStyle.Fixed3D;
allocateLabel.Width = groupBoxMEM.Width;
allocateLabel.Text = p.process_name;
groupBoxMEM.Controls.Add(allocateLabel);
///update original hole info
int v = 0;
int k = 0;
for (v = 0; v < ListOfHoles.Count; v++)
{
for (k = v; k < ListOfHoles.Count; k++)
{
if (ListOfHoles[v].size == copy[k].size)
{
break;
}
// break;
}
break;
}
ListOfHoles[v].size = copy[k].size;
ListOfHoles[v].start = copy[k].start;
//// draw Label :starting address of process
int firstlabel = 100;
Label firstlabelL = new Label();
firstlabelL.Location = new Point(620, firstlabel + 2 * (p.p_start_address + p.Process_size));
firstlabelL.Text = p.End_p_address.ToString();
this.Controls.Add(firstlabelL);
}
else
{
Drawing(ListOfHoles);
MessageBox.Show("Sorry.There is not enough space. Please remove a process from Memory and try again . ");
}
}
}
