public static void QSortIntPair(IntPair[] arr, int l, int r)
{
int i = l;
int j = r;
int x = arr[(i + j) / 2].Second;
IntPair tmp;
do
{
while (arr[i].Second > x)
i++;
while (arr[j].Second < x)
j--;
if (i <= j)
{
tmp = arr[i]; arr[i] = arr[j]; arr[j] = tmp;
i++; j--;
}
} while (i < j);
if (i < r)
QSortIntPair(arr, i, r);
if (l < j)
QSortIntPair(arr, l, j);
}
/// <summary>
/// Adds weights into flowgraph to favour connections that are in a larger
/// group of connections disabled by the same barrier
/// </summary>
/// <param name="g"></param>
public static void AddWeight(Graph g)
{
IEnumerator<Vertex> vertexIter = g.vertices.GetEnumerator();
Hashtable weights = new Hashtable();
int max_weight = 0;
int min_weight = 0xFFFFFFF;
while (vertexIter.MoveNext())
{
Vertex v = vertexIter.Current;
for (int i = 0; i < v.forward.Count; i++)
{
Edge e = (Edge)v.forward[i];
if (e.ExtraInfo != null)
{
CILInstruction ins = ((DelayedAction)e.ExtraInfo).SourceInstruction;
if (weights[ins.ID] == null)
weights.Add(ins.ID, 1);
else
{
weights[ins.ID] = (int)weights[ins.ID] + 1;
if (max_weight < (int)weights[ins.ID])
max_weight = (int)weights[ins.ID];
}
}
}
}
// print out the list of instruction usage with counters
// first copy them to array to sort
if (weights.Count == 0)
return;
IntPair[] arr = new IntPair[weights.Count];
IDictionaryEnumerator iter = weights.GetEnumerator();
int ix = 0;
while (iter.MoveNext())
{
arr[ix++] = new IntPair((int)iter.Key, (int)iter.Value);
if (min_weight > (int)iter.Value)
min_weight = (int)iter.Value;
}
IntPair.QSortIntPair(arr, 0, weights.Count - 1);
StreamWriter fout = new StreamWriter("weightlog.tmp");
for (int i = 0; i < arr.Length; i++)
fout.WriteLine("{0} {1}", arr[i].First, arr[i].Second);
int MAX_CAPACITY = 50;
double scale;
if (max_weight != min_weight)
scale = (min_weight * MAX_CAPACITY) / (max_weight - min_weight);
else
scale = 0;
// assigns the weights
vertexIter = g.vertices.GetEnumerator();
while (vertexIter.MoveNext())
{
Vertex v = vertexIter.Current;
for (int i = 0; i < v.forward.Count; i++)
{
Edge e = (Edge)v.forward[i];
if (e.ExtraInfo != null)
{
CILInstruction ins = ((DelayedAction)e.ExtraInfo).SourceInstruction;
e.capacity = (int)((1.0 * max_weight / (int)weights[ins.ID] - 1) * scale) + 1;
fout.Write("{0} ", e.capacity);
}
}
}
fout.Close();
}
