private void WorkerThreadStart()
{
Initialize();
while (isRunning)
{
//assign current work data to a tmp var, so that we use the same data through the entire itteration
//even if data is changed by the main thread, nothing will break or go wrong.
WorkerData tmpData = data;
if (tmpData.hasNewParent)
{
Tools.InitRandom(tmpData.randomSeed);
tmpData.hasNewParent = false;
}
DnaDrawing newDrawing = GetMutatedSeedSyncedDrawing();
double newErrorLevel = FitnessCalculator.GetDrawingFitness(newDrawing, info.SourceImage,
partitionY, partitionHeight);
var result = new DnaPartitionResult
{
Drawing = newDrawing,
ErrorLevel = newErrorLevel,
};
tmpData.workerTail.Enqueue(result);
}
}
public DnaPartitionResult GetNextResult()
{
WorkerData tmp = data;
while (tmp.workerTail.Count == 0)
{
Thread.Sleep(2); //only happens at startup and on rare occasions
tmp = data;
}
DnaPartitionResult result = tmp.workerTail.Dequeue();
tmp.workerUsedTail.Add(result);
return(result);
}
public void AcceptGoodDrawing(int tailIndex, int newSeed)
{
DnaPartitionResult result = data.workerUsedTail[tailIndex];
parentDrawing = result.Drawing; //.Clone();
var newData = new WorkerData
{
randomSeed = newSeed,
hasNewParent = true,
workerUsedTail = new List <DnaPartitionResult>(),
workerTail = new Queue <DnaPartitionResult>(),
};
data = newData; // assign new data to worker, worker will get it next loop itteration
}
public double GetNextErrorLevel()
{
int tailIndex = 0;
while (true)
{
var results = new List <DnaPartitionResult>();
foreach (ClusteredWorker worker in workers)
{
DnaPartitionResult partitionResult = worker.GetNextResult();
results.Add(partitionResult);
}
double newErrorLevel = 0;
foreach (DnaPartitionResult partitionResult in results)
{
newErrorLevel += partitionResult.ErrorLevel;
}
if (newErrorLevel <= currentErrorLevel)
{
currentErrorLevel = newErrorLevel;
int newSeed = Tools.GetRandomNumber(int.MinValue, int.MaxValue);
foreach (ClusteredWorker worker in workers)
{
worker.AcceptGoodDrawing(tailIndex, newSeed);
}
break;
}
tailIndex++;
// Thread.Sleep(10);
}
return(currentErrorLevel);
}