/// <summary>
/// this method creates flags for the operating system scheduler based on selected UI options
/// </summary>
/// <returns> a struct containing the selected options or null if an error occurred</returns>
private SchedulerFlags?CreateSchedulerFlags()
{
SchedulerFlags temp = new SchedulerFlags();
temp.schedulingPolicies = schedulingPolicy;
if (temp.schedulingPolicies == EnumSchedulingPolicies.ROUND_ROBIN) // if the user selected round robin scheduling
{
temp.RR_Priority_Policy = priorityPolicy;
temp.RR_TimeSlice = RR_Time_Slice;
temp.RR_Type = roundRobinType;
temp.TimeSliceUnit = RR_Time_Slice_Unit;
}
temp.allowCPUAffinity = allowCPUAffinity;
temp.defaultScheduler = useDefaultScheduler;
temp.runningWithNoProcesses = runWithNoProcesses;
temp.usingSingleCPU = true; //TODO Change this when multiple CPU's are Implemented
if (!temp.runningWithNoProcesses) // if the user selected to run the scheduler no processes
{
temp.readyQueue = readyQueue;
temp.waitingQueue = waitingQueue;
SimulatorProcess proc = readyQueue.Dequeue();
if (proc != null)
{
proc.CurrentState = EnumProcessState.RUNNING;
}
temp.runningProcess = proc; // populate the queues and set the first processes state to running
}
else // otherwise create a blank queue and set the running process to null
{
readyQueue = new Queue <SimulatorProcess>();
waitingQueue = new Queue <SimulatorProcess>();
temp.runningProcess = null;
}
temp.cpuClockSpeed = CPUClockSpeed;
temp.issuedLotteryTickets = new List <LotteryTicket>();
temp.drawnLotteryTickets = new List <LotteryTicket>();
temp.core = this;
return(temp);
}
/// <summary>
/// Constructor for process Scheduler
/// </summary>
/// <param name="flags"> the flags to use to create this scheduler</param>
public Scheduler(SchedulerFlags flags)
{
readyQueue = flags.readyQueue ?? new Queue <SimulatorProcess>();
waitingQueue = flags.waitingQueue ?? new Queue <SimulatorProcess>();
runningProcess = flags.runningProcess;
schedulingPolicy = flags.schedulingPolicies;
RR_TimeSlice = flags.RR_TimeSlice;
timeSliceUnit = flags.TimeSliceUnit;
defaultScheduler = flags.defaultScheduler;
RR_Priority_Policy = flags.RR_Priority_Policy;
RR_Type = flags.RR_Type;
usingSingleCPU = flags.usingSingleCPU;
allowCPUAffinity = flags.allowCPUAffinity;
runningWithNoProcesses = flags.runningWithNoProcesses;
cpuClockSpeed = flags.cpuClockSpeed;
suspended = false;
issuedLotteryTickets = flags.issuedLotteryTickets;
drawnLotteryTickets = flags.drawnLotteryTickets;
core = flags.core;
CollectionChanged += OnCollectionChanged;
CreateBackgroundWorker();
//BindingOperations.EnableCollectionSynchronization(readyQueue,thisLock);
}