public Simulator(int numberOfCustomersToFinish, int timeToFinish, StoppingCondition stoppingCodition)
{
this.neededNumberOfCustomers = numberOfCustomersToFinish;
this.timeToFinish = timeToFinish;
this.stoppingCodition = stoppingCodition;
ResultStatistics = new CustomersStatistics();
}
public List<ServiceResult> Simulate()
{
IDistributionDataReader distributionsReader = new FilesDistributionDataReader();
Distribution interarrivalDistribution = distributionsReader.ReadIterarrivalDistribution();
List<Distribution> serviceTimeDistributions = distributionsReader.ReadServerTimeDistributions();
CalculateCumlativeDistributionAndRange(interarrivalDistribution);
for (int i = 0; i < serviceTimeDistributions.Count; i++)
{
CalculateCumlativeDistributionAndRange(serviceTimeDistributions[i]);
}
FillServersData(serviceTimeDistributions);
var results = new List<ServiceResult>();
Random rand = new Random();
int numberOfCustomers = 0;
int time = 0;
results.Add(new ServiceResult()
{
ArrivalTime = 0,
});
while (!IsFinished(numberOfCustomers, time))
{
int interarrivalTimeRandomNumber = rand.Next(0, 1001);
int serviceTimeRandomNumber = rand.Next(0, 1001);
int interarrivalTimeRangeIndex = PickRange(interarrivalTimeRandomNumber, interarrivalDistribution.Ranges);
if (interarrivalTimeRangeIndex == -1) throw new Exception("Random interarrival time not in range");
int interarrivalTime = interarrivalDistribution.Times[interarrivalTimeRangeIndex];
int arrivalTime = results[results.Count - 1].ArrivalTime + interarrivalTime;
if (arrivalTime > timeToFinish)
break;
numberOfCustomers++;
time = Math.Max(time, arrivalTime);
int serverIndex = PickServer(arrivalTime, Servers);
int size = Servers[serverIndex].Services.Count;
int delayTime = new int();
if (size <= 0)
{
delayTime = 0;
}
else
{
delayTime = Math.Max(0, Servers[serverIndex].Services[size - 1].ServiceTimeEnd - arrivalTime);
Servers[serverIndex].Services[size - 1].ServiceDelay = delayTime;
}
//error
Distribution serverDistribution = Servers[serverIndex].ServiceTimeDistribution;
int serviceTimeRangeIndex = PickRange(serviceTimeRandomNumber, serverDistribution.Ranges);
int serviceTime = serverDistribution.Times[serviceTimeRangeIndex];
var serverServices = Servers[serverIndex].Services;
int serviceStart = arrivalTime;
if (serverServices.Count != 0)
serviceStart = Math.Max(arrivalTime, serverServices[serverServices.Count - 1].ServiceTimeEnd);
int serviceEnd = serviceStart + serviceTime;
Service service = new Service()
{
ServerID = Servers[serverIndex].ServerID,
ServiceTimeBegin = serviceStart,
ServiceDuraiton = serviceTime,
ServiceTimeEnd = serviceEnd
};
Servers[serverIndex].Services.Add(service);
ServiceResult serviceResult = new ServiceResult();
serviceResult.CustomerNumber = numberOfCustomers;
serviceResult.IterarrivalTimeRandomNumber = interarrivalTimeRandomNumber;
serviceResult.ServiceTimeRandomNumber = serviceTimeRandomNumber;
serviceResult.InterarrivalTime = interarrivalTime;
serviceResult.ArrivalTime = arrivalTime;
serviceResult.ServerService = service;
serviceResult.ServerDelay = delayTime;
results.Add(serviceResult);
}
results.RemoveAt(0);
simulationResults = results;
CalculateCustomersQueueDistribution(results[results.Count-1].ServerService.ServiceTimeEnd);
CalculateQueueHistogram();
int maximumQueueLength = CalculateMaximumQueueSize();
double averageCustomerWait = SetAverageCustomerWait(results, numberOfCustomers);
double probabilityCustomerWait = SetProbabilityCustomerWait(results, numberOfCustomers);
ResultStatistics = new CustomersStatistics()
{
MaximumQueueLength = maximumQueueLength,
AverageCustomerWait = averageCustomerWait,
ProbabilityCustomerWait = probabilityCustomerWait
};
for (int i = 0; i < Servers.Count; i++)
{
Servers[i].CalculateServerStatistcs(results[results.Count - 1].ServerService.ServiceTimeEnd, numberOfCustomers);
}
return results;
}
public Simulator()
{
neededNumberOfCustomers = 100;
stoppingCodition = StoppingCondition.NumberOfCustomers;
ResultStatistics = new CustomersStatistics();
}
public StatisticsForm(CustomersStatistics customersStatistics, List<ServerStatistics> serversStatistics)
{
this.customersStatistics = customersStatistics;
this.serversStatistics = serversStatistics;
InitializeComponent();
}
