static double[] simulateDrive(Drive drive)
{
var outputMetricList = new List<double>();
drive.AlgorithmEnumerator.Reset();
for (double time = 0, requestsRemaining = requestCollection.Length;
requestsRemaining > 0 || drive.ActiveRequest != null || drive.RequestsQueued > 0;)
{
if (drive.ActiveRequest != null)
{
var completionData = drive.CompleteJob();
time = completionData.Item1;
outputMetricList.Add(time - completionData.Item2);
if (requestsRemaining == 0) break;
}
requestCollection.Where(
request =>
(requestCollection.ElementAt(requestCollection.Count() - Convert.ToInt32(requestsRemaining))
.ArrivalTime <= request.ArrivalTime) && request.ArrivalTime <= time).ForEach(
request =>
{
requestsRemaining--;
drive.AddRequest(request);
});
if (drive.IsQueueEmpty())
{
time++;
continue;
}
if (drive.AlgorithmEnumerator.Current != null || drive.AlgorithmEnumerator.MoveNext())
{
Func<Queue<Request>, Drive.Stats, Queue<Request>> seekAlgorithm = null;
switch (drive.AlgorithmEnumerator.Current)
{
case "FCFS":
seekAlgorithm = RequestAlgorithms.FCFS;
break;
case "SSTF":
seekAlgorithm = RequestAlgorithms.SSTF;
break;
case "LOOK":
seekAlgorithm = RequestAlgorithms.LOOK;
break;
case "CLOOK":
seekAlgorithm = RequestAlgorithms.CLOOK;
break;
}
drive.ActivateNewJob(seekAlgorithm, time);
}
}
return outputMetricList.ToArray();
}
