private void ReleaseTasks(int currentCycle)
{
while (WaitingList.Count() > 0 && currentCycle >= WaitingList.Peek().Release)
{
ReadyList.Enqueue(WaitingList.Dequeue());
}
}
private void AssignTask()
{
if (ReadyList.Count() > 0)
{
// Assign a task if we dont have one
if (Current == null)
{
Current = ReadyList.Dequeue();
}
// Preempt the current task if the awaiting task's deadline is lower
//else if (ReadyList.Peek().PriorityDeadline < Current.PriorityDeadline)
else if (ReadyList.Peek().PriorityDeadline < Current.PriorityDeadline)
{
ReadyList.Enqueue(Current);
Current = ReadyList.Dequeue();
}
}
}
//TODO: Does this work correctly with an empty taskset?
/// <summary>
/// This method executes the current event if is set.
/// It also sets the upcoming event based on the readylist/waiting list.
/// </summary>
/// <param name="debug">Indicates if the ExecutionTrace should be built.</param>
public void TriggerEvent(bool debug)
{
int next = Int32.MaxValue;
ReleaseTasks(Event.Cycle);
if (Current == null)
{
if (ReadyList.Count() > 0)
{
if ((Event.Cycle % Hyperperiod) == 0)
{
int offset = Separation[ReadyList.Peek().Cil];
next = Event.Cycle + offset;
}
else
{
Current = ReadyList.Dequeue();
next = Current.NextEvent(Event.Cycle, MacroTick);
}
}
else if (WaitingList.Count() > 0)
{
next = WaitingList.Peek().Release;
}
}
else
{
bool finalExecutionSlice = Current.FinalEvent(MacroTick);
Current.Execute(Event.Cycle, debug, MacroTick);
next = Current.NextEvent(Event.Cycle, MacroTick);
int offset = 0;
if (ReadyList.Count() > 0)
{
Job possibleJob = ReadyList.Peek();
if (possibleJob.Cil != Current.Cil)
{
offset = Separation[possibleJob.Cil];
}
if (finalExecutionSlice)
{
WaitingList.Enqueue(Current);
Current = null;
next = Event.Cycle + offset;
}
else if ((possibleJob.PriorityDeadline + offset) < Current.PriorityDeadline)
{
ReadyList.Enqueue(Current);
Current = null;
next = Event.Cycle + offset;
}
}
else
{
if (finalExecutionSlice)
{
WaitingList.Enqueue(Current);
Current = null;
foreach (var item in Separation)
{
if (offset < item.Value)
{
offset = item.Value;
}
}
next = Event.Cycle + offset;
}
}
ReleaseTasks(Event.Cycle);
}
Event.Cycle = next;
}