public void StartThread(KThread Thread)
{
lock (SchedLock)
{
SchedulerThread SchedThread = new SchedulerThread(Thread);
if (!AllThreads.TryAdd(Thread, SchedThread))
{
return;
}
if (ActiveProcessors.Add(Thread.ProcessorId))
{
Thread.Thread.Execute();
PrintDbgThreadInfo(Thread, "running.");
}
else
{
WaitingToRun[Thread.ProcessorId].Push(SchedThread);
PrintDbgThreadInfo(Thread, "waiting to run.");
}
}
}
public bool HasThread(SchedulerThread SchedThread)
{
lock (Threads)
{
return(Threads.Contains(SchedThread));
}
}
private void TryResumingExecution(SchedulerThread SchedThread)
{
KThread Thread = SchedThread.Thread;
PrintDbgThreadInfo(Thread, "trying to resume...");
SchedThread.WaitActivity.WaitOne();
lock (SchedLock)
{
if (ActiveProcessors.Add(Thread.ProcessorId))
{
PrintDbgThreadInfo(Thread, "resuming execution...");
return;
}
WaitingToRun[Thread.ProcessorId].Push(SchedThread);
PrintDbgThreadInfo(Thread, "entering wait state...");
}
SchedThread.WaitSched.WaitOne();
PrintDbgThreadInfo(Thread, "resuming execution...");
}
public void RemoveThread(KThread Thread)
{
PrintDbgThreadInfo(Thread, "exited.");
lock (SchedLock)
{
if (AllThreads.TryRemove(Thread, out SchedulerThread SchedThread))
{
WaitingToRun.Remove(SchedThread);
SchedThread.Dispose();
}
int ActualCore = Thread.ActualCore;
SchedulerThread NewThread = WaitingToRun.Pop(ActualCore);
if (NewThread == null)
{
Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {ActualCore}!");
CoreThreads[ActualCore] = null;
return;
}
NewThread.Thread.ActualCore = ActualCore;
RunThread(NewThread);
}
}
public bool Remove(SchedulerThread SchedThread)
{
lock (Threads)
{
return(Threads.Remove(SchedThread));
}
}
public void Suspend(KThread Thread)
{
lock (SchedLock)
{
PrintDbgThreadInfo(Thread, "suspended.");
int ActualCore = Thread.ActualCore;
CoreReschedule[ActualCore] = false;
SchedulerThread SchedThread = WaitingToRun.Pop(ActualCore);
if (SchedThread != null)
{
SchedThread.Thread.ActualCore = ActualCore;
CoreThreads[ActualCore] = SchedThread.Thread;
RunThread(SchedThread);
}
else
{
Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {Thread.ActualCore}!");
CoreThreads[ActualCore] = null;
}
}
}
public void StartThread(KThread Thread)
{
lock (SchedLock)
{
SchedulerThread SchedThread = new SchedulerThread(Thread);
if (!AllThreads.TryAdd(Thread, SchedThread))
{
return;
}
if (!ActiveProcessors.Contains(Thread.ProcessorId))
{
ActiveProcessors.Add(Thread.ProcessorId);
Thread.Thread.Execute();
Logging.Debug($"{GetDbgThreadInfo(Thread)} running.");
}
else
{
WaitingToRun[Thread.ProcessorId].Push(SchedThread);
Logging.Debug($"{GetDbgThreadInfo(SchedThread.Thread)} waiting to run.");
}
}
}
private void TryResumingExecution(SchedulerThread SchedThread)
{
KThread Thread = SchedThread.Thread;
if (SchedThread.Active)
{
lock (SchedLock)
{
if (ActiveProcessors.Add(Thread.ProcessorId))
{
PrintDbgThreadInfo(Thread, "resuming execution...");
return;
}
WaitingToRun[Thread.ProcessorId].Push(SchedThread);
PrintDbgThreadInfo(Thread, "entering wait state...");
}
}
else
{
PrintDbgThreadInfo(Thread, "entering inactive wait state...");
}
SchedThread.WaitEvent.WaitOne();
PrintDbgThreadInfo(Thread, "resuming execution...");
}
public void Push(SchedulerThread Thread)
{
lock (Threads)
{
Threads.Add(Thread);
}
}
public void Yield(KThread Thread)
{
PrintDbgThreadInfo(Thread, "yielded execution.");
if (IsActive(Thread))
{
lock (SchedLock)
{
SchedulerThread SchedThread = WaitingToRun[Thread.ProcessorId].Pop(Thread.ActualPriority);
if (SchedThread == null)
{
PrintDbgThreadInfo(Thread, "resumed because theres nothing better to run.");
return;
}
if (SchedThread != null)
{
RunThread(SchedThread);
}
}
}
else
{
//Just stop running the thread if it's not active,
//and run whatever is waiting to run with the higuest priority.
Suspend(Thread.ProcessorId);
}
Resume(Thread);
}
public void RemoveThread(KThread Thread)
{
PrintDbgThreadInfo(Thread, "exited.");
lock (SchedLock)
{
if (AllThreads.TryRemove(Thread, out SchedulerThread SchedThread))
{
WaitingToRun[Thread.ProcessorId].Remove(SchedThread);
SchedThread.Dispose();
}
SchedulerThread NewThread = WaitingToRun[Thread.ProcessorId].Pop();
if (NewThread == null)
{
Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {Thread.ProcessorId}!");
ActiveProcessors.Remove(Thread.ProcessorId);
return;
}
RunThread(NewThread);
}
}
public void EnterWait(KThread Thread, int TimeoutMs = Timeout.Infinite)
{
SchedulerThread SchedThread = AllThreads[Thread];
Suspend(Thread);
SchedThread.WaitSync.WaitOne(TimeoutMs);
TryResumingExecution(SchedThread);
}
private void UpdateSyncWaitEvent(SchedulerThread SchedThread)
{
if (SchedThread.Active && SchedThread.SyncTimeout == 0)
{
SchedThread.SyncWaitEvent.Set();
}
else
{
SchedThread.SyncWaitEvent.Reset();
}
}
private void RunThread(SchedulerThread SchedThread)
{
if (!SchedThread.Thread.Thread.Execute())
{
SchedThread.WaitEvent.Set();
}
else
{
Logging.Debug($"{GetDbgThreadInfo(SchedThread.Thread)} running.");
}
}
private void RunThread(SchedulerThread SchedThread)
{
if (!SchedThread.Thread.Thread.Execute())
{
SchedThread.WaitSched.Set();
}
else
{
PrintDbgThreadInfo(SchedThread.Thread, "running.");
}
}
private bool WaitIfNeeded(SchedulerThread SchedThread)
{
KThread Thread = SchedThread.Thread;
if (!IsActive(SchedThread) && Thread.Thread.IsCurrentThread())
{
Suspend(Thread.ProcessorId);
return(Resume(Thread));
}
else
{
return(false);
}
}
public void Suspend(int ProcessorId)
{
lock (SchedLock)
{
SchedulerThread SchedThread = WaitingToRun[ProcessorId].Pop();
if (SchedThread != null)
{
RunThread(SchedThread);
}
else
{
ActiveProcessors.Remove(ProcessorId);
}
}
}
public void Suspend(int ProcessorId)
{
lock (SchedLock)
{
SchedulerThread SchedThread = WaitingToRun[ProcessorId].Pop();
if (SchedThread != null)
{
RunThread(SchedThread);
}
else
{
Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {ProcessorId}!");
ActiveProcessors.Remove(ProcessorId);
}
}
}
public void Yield(KThread Thread)
{
PrintDbgThreadInfo(Thread, "yielded execution.");
lock (SchedLock)
{
SchedulerThread SchedThread = WaitingToRun[Thread.ProcessorId].Pop(Thread.Priority);
if (SchedThread == null)
{
PrintDbgThreadInfo(Thread, "resumed because theres nothing better to run.");
return;
}
RunThread(SchedThread);
}
Resume(Thread);
}
private void TryResumingExecution(SchedulerThread SchedThread)
{
KThread Thread = SchedThread.Thread;
lock (SchedLock)
{
if (ActiveProcessors.Add(Thread.ProcessorId))
{
Logging.Debug($"{GetDbgThreadInfo(Thread)} resuming execution...");
return;
}
WaitingToRun[Thread.ProcessorId].Push(SchedThread);
}
SchedThread.WaitEvent.WaitOne();
Logging.Debug($"{GetDbgThreadInfo(Thread)} resuming execution...");
}
public void Reschedule(KThread Thread)
{
bool NeedsReschedule;
lock (SchedLock)
{
int ActualCore = Thread.ActualCore;
NeedsReschedule = CoreReschedule[ActualCore];
CoreReschedule[ActualCore] = false;
}
if (NeedsReschedule)
{
PrintDbgThreadInfo(Thread, "yielded execution.");
lock (SchedLock)
{
int ActualCore = Thread.ActualCore;
SchedulerThread NewThread = WaitingToRun.Pop(ActualCore, Thread.ActualPriority);
if (NewThread == null)
{
PrintDbgThreadInfo(Thread, "resumed because theres nothing better to run.");
return;
}
NewThread.Thread.ActualCore = ActualCore;
CoreThreads[ActualCore] = NewThread.Thread;
RunThread(NewThread);
}
Resume(Thread);
}
}
private bool TryResumingExecution(SchedulerThread SchedThread)
{
KThread Thread = SchedThread.Thread;
if (!SchedThread.Active || SchedThread.SyncTimeout != 0)
{
PrintDbgThreadInfo(Thread, "entering inactive wait state...");
}
bool Result = false;
if (SchedThread.SyncTimeout != 0)
{
Result = SchedThread.SyncWaitEvent.WaitOne(SchedThread.SyncTimeout);
SchedThread.SyncTimeout = 0;
}
lock (SchedLock)
{
if (ActiveProcessors.Add(Thread.ProcessorId))
{
PrintDbgThreadInfo(Thread, "resuming execution...");
return(Result);
}
WaitingToRun[Thread.ProcessorId].Push(SchedThread);
PrintDbgThreadInfo(Thread, "entering wait state...");
}
SchedThread.SchedWaitEvent.WaitOne();
PrintDbgThreadInfo(Thread, "resuming execution...");
return(Result);
}
private bool IsActive(SchedulerThread SchedThread)
{
return(SchedThread.Active && SchedThread.SyncTimeout == 0);
}