void next_segment_info_Click(object sender, System.EventArgs e)
{
segment_info_label.Hide();
segment_name_label.Hide();
segment_size_label.Hide();
string search_name, search_size, search_name_label, search_size_label;
for (int j = 0; j < current_process.number_of_segments; j++)
{
search_name = "textBoxName" + current_process_id;
search_name += j;
search_size = "textBoxSize" + current_process_id;
search_size += j;
search_name_label = "segment_name_label" + j;
search_size_label = "segment_size_label" + j;
TextBox name_value = (TextBox)this.Controls.Find(search_name, false).FirstOrDefault();
TextBox size_value = (TextBox)this.Controls.Find(search_size, false).FirstOrDefault();
//Input error checking
if (string.IsNullOrWhiteSpace(name_value.Text) || string.IsNullOrWhiteSpace(size_value.Text))
{
System.Windows.Forms.MessageBox.Show("You can't leave any field empty, please fill all fields.");
name_value.Hide();
size_value.Hide();
name_value = (TextBox)this.Controls.Find(search_name.Substring(0, search_name.Length - 1), false).FirstOrDefault();
size_value = (TextBox)this.Controls.Find(search_size.Substring(0, search_size.Length - 1), false).FirstOrDefault();
while (name_value != null && size_value != null)
{
name_value = (TextBox)this.Controls.Find(search_name.Substring(0, search_name.Length - 1), false).FirstOrDefault();
size_value = (TextBox)this.Controls.Find(search_size.Substring(0, search_size.Length - 1), false).FirstOrDefault();
name_value.Hide();
size_value.Hide();
}
next_segment_info.Hide();
return;
}
if (int.Parse(size_value.Text) <= 0)
{
System.Windows.Forms.MessageBox.Show("Segments size must be greater than 0.");
name_value.Hide();
size_value.Hide();
name_value = (TextBox)this.Controls.Find(search_name.Substring(0, search_name.Length - 1), false).FirstOrDefault();
size_value = (TextBox)this.Controls.Find(search_size.Substring(0, search_size.Length - 1), false).FirstOrDefault();
while (name_value != null && size_value != null)
{
name_value = (TextBox)this.Controls.Find(search_name.Substring(0, search_name.Length - 1), false).FirstOrDefault();
size_value = (TextBox)this.Controls.Find(search_size.Substring(0, search_size.Length - 1), false).FirstOrDefault();
name_value.Hide();
size_value.Hide();
}
next_segment_info.Hide();
return;
}
///////////////////////
current_process.name_of_segments[j] = name_value.Text;
current_process.size_of_segments[j] = int.Parse(size_value.Text);
name_value.Hide();
size_value.Hide();
}
next_segment_info.Hide();
Add.Show();
if (method == "First Fit")
{
for (int i = 0; i < current_process.number_of_segments; i++)
{
for (int j = 0; j < no_of_holes; j++)
{
if (current_process.size_of_segments[i] < holesSize[j])
{
drawrectangle(holesStart[j], (current_process.name + ":" + current_process.name_of_segments[i]), current_process.size_of_segments[i]);
current_process.start_address_segment[i] = holesStart[j];
holesStart[j] = holesStart[j] + current_process.size_of_segments[i];
holesSize[j] = holesSize[j] - current_process.size_of_segments[i];
merge_holes();
i++;
break;
}
else if (current_process.size_of_segments[i] == holesSize[j])
{
drawrectangle(holesStart[j], (current_process.name + ":" + current_process.name_of_segments[i]), current_process.size_of_segments[i]);
current_process.start_address_segment[i] = holesStart[j];
holesStart.Remove(holesStart[j]);
holesSize.Remove(holesSize[j]);
no_of_holes--;
i++;
break;
}
else if (no_of_holes <= 0 || (current_process.size_of_segments[i] > holesSize[j] && j == (no_of_holes - 1)))
{
for (int k = 0; k < i; k++)
{
holesStart.Add(current_process.start_address_segment[k]);
holesSize.Add(current_process.size_of_segments[k]);
no_of_holes++;
}
sort_start(ref holesStart, ref holesSize);
merge_holes();
System.Windows.Forms.MessageBox.Show("No hole fits the " + current_process.name_of_segments[i] + " of process " + current_process.name);
return;
}
}
if (no_of_holes <= 0 && i < current_process.number_of_segments)
{
for (int k = 0; k < i; k++)
{
holesStart.Add(current_process.start_address_segment[k]);
holesSize.Add(current_process.size_of_segments[k]);
no_of_holes++;
}
sort_start(ref holesStart, ref holesSize);
merge_holes();
System.Windows.Forms.MessageBox.Show("No hole fits the " + current_process.name_of_segments[i] + " of process " + current_process.name);
return;
}
i--;
}
running_processes.Items.Add(current_process.name);
user_processes.Add(current_process);
}
else if (method == "Best Fit")
{
int fittest_hole = 0;
int found_hole = 0;
for (int i = 0; i < current_process.number_of_segments; i++)
{
found_hole = 0;
fittest_hole = 0;
sort_size(ref holesStart, ref holesSize);
for (int j = 0; j < no_of_holes; j++)
{
if (current_process.size_of_segments[i] < holesSize[j])
{
found_hole = 1;
if (holesSize[j] < holesSize[fittest_hole] || current_process.size_of_segments[i] > holesSize[fittest_hole])
{
fittest_hole = j;
}
}
else if (current_process.size_of_segments[i] == holesSize[j])
{
found_hole = 2;
fittest_hole = j;
break;
}
}
if (found_hole == 1)
{
drawrectangle(holesStart[fittest_hole], (current_process.name + ":" + current_process.name_of_segments[i]), current_process.size_of_segments[i]);
current_process.start_address_segment[i] = holesStart[fittest_hole];
holesStart[fittest_hole] = holesStart[fittest_hole] + current_process.size_of_segments[i];
holesSize[fittest_hole] = holesSize[fittest_hole] - current_process.size_of_segments[i];
drawrectangle(holesStart[fittest_hole], "Hole", holesSize[fittest_hole]);
sort_start(ref holesStart, ref holesSize);
}
else if (found_hole == 2)
{
drawrectangle(holesStart[fittest_hole], (current_process.name + ":" + current_process.name_of_segments[i]), current_process.size_of_segments[i]);
current_process.start_address_segment[i] = holesStart[fittest_hole];
holesStart.Remove(holesStart[fittest_hole]);
holesSize.Remove(holesSize[fittest_hole]);
no_of_holes--;
}
else
{
for (int k = 0; k < i; k++)
{
holesStart.Add(current_process.start_address_segment[k]);
holesSize.Add(current_process.size_of_segments[k]);
no_of_holes++;
}
sort_start(ref holesStart, ref holesSize);
merge_holes();
System.Windows.Forms.MessageBox.Show("No hole fits the " + current_process.name_of_segments[i] + " of process " + current_process.name);
return;
}
}
running_processes.Items.Add(current_process.name);
user_processes.Add(current_process);
}
else if (method == "Worst Fit")
{
int unfittest_hole;
int found_hole;
for (int i = 0; i < current_process.number_of_segments; i++)
{
found_hole = 0;
unfittest_hole = 0;
sort_size_desc(ref holesStart, ref holesSize);
for (int j = 0; j < no_of_holes; j++)
{
if (current_process.size_of_segments[i] < holesSize[j])
{
if (holesSize[j] > holesSize[unfittest_hole] || found_hole == 0)
{
found_hole = 1;
unfittest_hole = j;
}
}
else if (current_process.size_of_segments[i] == holesSize[j] && found_hole != 1)
{
found_hole = 2;
unfittest_hole = j;
break;
}
}
if (found_hole == 1)
{
drawrectangle(holesStart[unfittest_hole], (current_process.name + ":" + current_process.name_of_segments[i]), current_process.size_of_segments[i]);
current_process.start_address_segment[i] = holesStart[unfittest_hole];
holesStart[unfittest_hole] = holesStart[unfittest_hole] + current_process.size_of_segments[i];
holesSize[unfittest_hole] = holesSize[unfittest_hole] - current_process.size_of_segments[i];
drawrectangle(holesStart[unfittest_hole], "Hole", holesSize[unfittest_hole]);
}
else if (found_hole == 2)
{
drawrectangle(holesStart[unfittest_hole], (current_process.name + ":" + current_process.name_of_segments[i]), current_process.size_of_segments[i]);
current_process.start_address_segment[i] = holesStart[unfittest_hole];
holesStart.Remove(holesStart[unfittest_hole]);
holesSize.Remove(holesSize[unfittest_hole]);
no_of_holes--;
}
else
{
for (int k = 0; k < i; k++)
{
holesStart.Add(current_process.start_address_segment[k]);
holesSize.Add(current_process.size_of_segments[k]);
no_of_holes++;
}
sort_start(ref holesStart, ref holesSize);
merge_holes();
System.Windows.Forms.MessageBox.Show("No hole fits the " + current_process.name_of_segments[i] + " of process " + current_process.name);
return;
}
}
running_processes.Items.Add(current_process.name);
user_processes.Add(current_process);
}
}