private void PreemptThread(int prio, int core)
{
IEnumerable <KThread> scheduledThreads = SchedulingData.ScheduledThreads(core);
KThread selectedThread = scheduledThreads.FirstOrDefault(x => x.DynamicPriority == prio);
// Yield priority queue.
if (selectedThread != null)
{
SchedulingData.Reschedule(prio, core, selectedThread);
}
IEnumerable <KThread> SuitableCandidates()
{
foreach (KThread thread in SchedulingData.SuggestedThreads(core))
{
int srcCore = thread.CurrentCore;
if (srcCore >= 0)
{
KThread highestPrioSrcCore = SchedulingData.ScheduledThreads(srcCore).FirstOrDefault();
if (highestPrioSrcCore != null && highestPrioSrcCore.DynamicPriority < 2)
{
break;
}
if (highestPrioSrcCore == thread)
{
continue;
}
}
// If the candidate was scheduled after the current thread, then it's not worth it.
if (selectedThread == null || selectedThread.LastScheduledTime >= thread.LastScheduledTime)
{
yield return(thread);
}
}
}
// Select candidate threads that could run on this core.
// Only take into account threads that are not yet selected.
KThread dst = SuitableCandidates().FirstOrDefault(x => x.DynamicPriority == prio);
if (dst != null)
{
SchedulingData.TransferToCore(prio, core, dst);
selectedThread = dst;
}
// If the priority of the currently selected thread is lower than preemption priority,
// then allow threads with lower priorities to be selected aswell.
if (selectedThread != null && selectedThread.DynamicPriority > prio)
{
Func <KThread, bool> predicate = x => x.DynamicPriority >= selectedThread.DynamicPriority;
dst = SuitableCandidates().FirstOrDefault(predicate);
if (dst != null)
{
SchedulingData.TransferToCore(dst.DynamicPriority, core, dst);
}
}
ThreadReselectionRequested = true;
}
private void PreemptThread(int Prio, int Core)
{
IEnumerable <KThread> ScheduledThreads = SchedulingData.ScheduledThreads(Core);
KThread SelectedThread = ScheduledThreads.FirstOrDefault(x => x.DynamicPriority == Prio);
//Yield priority queue.
if (SelectedThread != null)
{
SchedulingData.Reschedule(Prio, Core, SelectedThread);
}
IEnumerable <KThread> SuitableCandidates()
{
foreach (KThread Thread in SchedulingData.SuggestedThreads(Core))
{
int SrcCore = Thread.CurrentCore;
if (SrcCore >= 0)
{
KThread HighestPrioSrcCore = SchedulingData.ScheduledThreads(SrcCore).FirstOrDefault();
if (HighestPrioSrcCore != null && HighestPrioSrcCore.DynamicPriority < 2)
{
break;
}
if (HighestPrioSrcCore == Thread)
{
continue;
}
}
//If the candidate was scheduled after the current thread, then it's not worth it.
if (SelectedThread == null || SelectedThread.LastScheduledTicks >= Thread.LastScheduledTicks)
{
yield return(Thread);
}
}
}
//Select candidate threads that could run on this core.
//Only take into account threads that are not yet selected.
KThread Dst = SuitableCandidates().FirstOrDefault(x => x.DynamicPriority == Prio);
if (Dst != null)
{
SchedulingData.TransferToCore(Prio, Core, Dst);
SelectedThread = Dst;
}
//If the priority of the currently selected thread is lower than preemption priority,
//then allow threads with lower priorities to be selected aswell.
if (SelectedThread != null && SelectedThread.DynamicPriority > Prio)
{
Func <KThread, bool> Predicate = x => x.DynamicPriority >= SelectedThread.DynamicPriority;
Dst = SuitableCandidates().FirstOrDefault(Predicate);
if (Dst != null)
{
SchedulingData.TransferToCore(Dst.DynamicPriority, Core, Dst);
}
}
ThreadReselectionRequested = true;
}