/// <summary>
/// sum costs over all nodes
/// </summary>
/// <param name="throughputTotalCost">a cost</param>
/// <param name="latencyTotalCost">a cost</param>
/// <param name="registersTotalCost">a cost</param>
internal void SumCosts(
out long throughputTotalCost,
out long latencyTotalCost,
out long registersTotalCost)
{
var sort = DelayGraphAlgorithms.TopologicalSort(Graph).ToList();
throughputTotalCost = DelayGraphAlgorithms.FindMaxThroughputCostCore(sort, Graph, RegisteredTerminals);
latencyTotalCost = DelayGraphAlgorithms.FindMaxLatencyCore(sort, Graph, RegisteredTerminals);
registersTotalCost = 0;
foreach (var vertex in Graph.Vertices.Where(Registered))
{
registersTotalCost += vertex.RegisterCostIfRegistered;
}
}
/// <summary>
/// fix sibling to be registered if any is registered
/// </summary>
/// <returns>a count of number of nodes that changed</returns>
private int FixSolutionForSiblingVertices()
{
int count = 0;
HashSet <DelayGraphVertex> grouped;
var listOfSiblings = DelayGraphAlgorithms.FindVertexGroups(Graph, out grouped);
foreach (var siblings in listOfSiblings)
{
if (siblings.Any(Registered) && siblings.Count() > 1)
{
// at least one in sibling is registered
var verticesWhichAreNotRegistered = siblings.Where(v => !Registered(v));
count += verticesWhichAreNotRegistered.Count();
foreach (var v in verticesWhichAreNotRegistered)
{
RegisteredTerminals.Add(v);
}
}
}
return(count);
}