public void YieldWithLoadBalancing()
{
if (YieldCount == Owner.YieldCounter)
{
return;
}
int Prio = DynamicPriority;
int Core = CurrentCore;
System.CriticalSectionLock.Lock();
if (SchedFlags != ThreadSchedState.Running)
{
System.CriticalSectionLock.Unlock();
System.Scheduler.ContextSwitch();
return;
}
KThread NextThreadOnCurrentQueue = null;
if (DynamicPriority < KScheduler.PrioritiesCount)
{
//Move current thread to the end of the queue.
SchedulingData.Reschedule(Prio, Core, this);
NextThreadOnCurrentQueue = SchedulingData.ScheduledThreadsPerPrioPerCore[Prio][Core].First?.Value;
}
if (Owner != null)
{
Owner.YieldCounter++;
}
foreach (KThread Thread in SchedulingData.SuggestedThreads(Core))
{
KThread SelectedOnCandidateCore = null;
if (Thread.CurrentCore >= 0)
{
SelectedOnCandidateCore = Scheduler.CoreContexts[Thread.CurrentCore].SelectedThread;
}
if (Thread == SelectedOnCandidateCore)
{
continue;
}
if (this != NextThreadOnCurrentQueue)
{
//If the candidate has lower priority than the current thread,
//or the priority is the same, but it was already scheduled
//after the next thread on the queue, then it's not worth to run
//it, as the next thread on the queue is already a better candidate.
if (Thread.DynamicPriority > DynamicPriority ||
(Thread.DynamicPriority == DynamicPriority &&
Thread.LastScheduledTicks > NextThreadOnCurrentQueue.LastScheduledTicks))
{
break;
}
}
else if (Thread.DynamicPriority > DynamicPriority)
{
break;
}
if (SelectedOnCandidateCore == null || SelectedOnCandidateCore.DynamicPriority >= 2)
{
SchedulingData.MoveTo(Thread.DynamicPriority, Core, Thread);
Scheduler.ThreadReselectionRequested = true;
if (Thread.Owner != null)
{
Thread.Owner.YieldCounter++;
}
break;
}
}
if (this != NextThreadOnCurrentQueue)
{
Scheduler.ThreadReselectionRequested = true;
}
else
{
YieldCount = Owner.YieldCounter;
}
System.CriticalSectionLock.Unlock();
System.Scheduler.ContextSwitch();
}
public void YieldWithLoadBalancing()
{
int Prio = DynamicPriority;
int Core = CurrentCore;
System.CriticalSectionLock.Lock();
if (SchedFlags != ThreadSchedState.Running)
{
System.CriticalSectionLock.Unlock();
System.Scheduler.ContextSwitch();
return;
}
KThread NextThreadOnCurrentQueue = null;
if (DynamicPriority < KScheduler.PrioritiesCount)
{
//Move current thread to the end of the queue.
SchedulingData.Reschedule(Prio, Core, this);
Func <KThread, bool> Predicate = x => x.DynamicPriority == Prio;
NextThreadOnCurrentQueue = SchedulingData.ScheduledThreads(Core).FirstOrDefault(Predicate);
}
IEnumerable <KThread> SuitableCandidates()
{
foreach (KThread Thread in SchedulingData.SuggestedThreads(Core))
{
int SrcCore = Thread.CurrentCore;
if (SrcCore >= 0)
{
KThread SelectedSrcCore = Scheduler.CoreContexts[SrcCore].SelectedThread;
if (SelectedSrcCore == Thread || ((SelectedSrcCore?.DynamicPriority ?? 2) < 2))
{
continue;
}
}
//If the candidate was scheduled after the current thread, then it's not worth it,
//unless the priority is higher than the current one.
if (NextThreadOnCurrentQueue.LastScheduledTicks >= Thread.LastScheduledTicks ||
NextThreadOnCurrentQueue.DynamicPriority < Thread.DynamicPriority)
{
yield return(Thread);
}
}
}
KThread Dst = SuitableCandidates().FirstOrDefault(x => x.DynamicPriority <= Prio);
if (Dst != null)
{
SchedulingData.TransferToCore(Dst.DynamicPriority, Core, Dst);
Scheduler.ThreadReselectionRequested = true;
}
if (this != NextThreadOnCurrentQueue)
{
Scheduler.ThreadReselectionRequested = true;
}
System.CriticalSectionLock.Unlock();
System.Scheduler.ContextSwitch();
}
public void YieldWithLoadBalancing()
{
System.CriticalSection.Enter();
if (SchedFlags != ThreadSchedState.Running)
{
System.CriticalSection.Leave();
System.Scheduler.ContextSwitch();
return;
}
int prio = DynamicPriority;
int core = CurrentCore;
KThread nextThreadOnCurrentQueue = null;
if (DynamicPriority < KScheduler.PrioritiesCount)
{
//Move current thread to the end of the queue.
_schedulingData.Reschedule(prio, core, this);
Func <KThread, bool> predicate = x => x.DynamicPriority == prio;
nextThreadOnCurrentQueue = _schedulingData.ScheduledThreads(core).FirstOrDefault(predicate);
}
IEnumerable <KThread> SuitableCandidates()
{
foreach (KThread thread in _schedulingData.SuggestedThreads(core))
{
int srcCore = thread.CurrentCore;
if (srcCore >= 0)
{
KThread selectedSrcCore = _scheduler.CoreContexts[srcCore].SelectedThread;
if (selectedSrcCore == thread || ((selectedSrcCore?.DynamicPriority ?? 2) < 2))
{
continue;
}
}
//If the candidate was scheduled after the current thread, then it's not worth it,
//unless the priority is higher than the current one.
if (nextThreadOnCurrentQueue.LastScheduledTime >= thread.LastScheduledTime ||
nextThreadOnCurrentQueue.DynamicPriority < thread.DynamicPriority)
{
yield return(thread);
}
}
}
KThread dst = SuitableCandidates().FirstOrDefault(x => x.DynamicPriority <= prio);
if (dst != null)
{
_schedulingData.TransferToCore(dst.DynamicPriority, core, dst);
_scheduler.ThreadReselectionRequested = true;
}
if (this != nextThreadOnCurrentQueue)
{
_scheduler.ThreadReselectionRequested = true;
}
System.CriticalSection.Leave();
System.Scheduler.ContextSwitch();
}
