public void ContextSwitch()
{
lock (CoreContexts)
{
if (MultiCoreScheduling)
{
int SelectedCount = 0;
for (int Core = 0; Core < KScheduler.CpuCoresCount; Core++)
{
KCoreContext CoreContext = CoreContexts[Core];
if (CoreContext.ContextSwitchNeeded && (CoreContext.CurrentThread?.Thread.IsCurrentThread() ?? false))
{
CoreContext.ContextSwitch();
}
if (CoreContext.CurrentThread?.Thread.IsCurrentThread() ?? false)
{
SelectedCount++;
}
}
if (SelectedCount == 0)
{
CoreManager.GetThread(Thread.CurrentThread).Pause();
}
else if (SelectedCount == 1)
{
CoreManager.GetThread(Thread.CurrentThread).Unpause();
}
else
{
throw new InvalidOperationException("Thread scheduled in more than one core!");
}
}
else
{
KThread CurrentThread = CoreContexts[CurrentCore].CurrentThread;
bool HasThreadExecuting = CurrentThread != null;
if (HasThreadExecuting)
{
//This is not the thread that is currently executing, we need
//to request an interrupt to allow safely starting another thread.
if (!CurrentThread.Thread.IsCurrentThread())
{
CurrentThread.Thread.RequestInterrupt();
return;
}
CoreManager.GetThread(CurrentThread.Thread.Work).Pause();
}
//Advance current core and try picking a thread,
//keep advancing if it is null.
for (int Core = 0; Core < 4; Core++)
{
CurrentCore = (CurrentCore + 1) % CpuCoresCount;
KCoreContext CoreContext = CoreContexts[CurrentCore];
CoreContext.UpdateCurrentThread();
if (CoreContext.CurrentThread != null)
{
CoreContext.CurrentThread.ClearExclusive();
CoreManager.GetThread(CoreContext.CurrentThread.Thread.Work).Unpause();
CoreContext.CurrentThread.Thread.Execute();
break;
}
}
//If nothing was running before, then we are on a "external"
//HLE thread, we don't need to wait.
if (!HasThreadExecuting)
{
return;
}
}
}
CoreManager.GetThread(Thread.CurrentThread).Wait();
}
public void Unlock()
{
if (RecursionCount == 0)
{
return;
}
bool DoContextSwitch = false;
if (--RecursionCount == 0)
{
if (System.Scheduler.ThreadReselectionRequested)
{
System.Scheduler.SelectThreads();
}
Monitor.Exit(LockObj);
if (System.Scheduler.MultiCoreScheduling)
{
lock (System.Scheduler.CoreContexts)
{
for (int Core = 0; Core < KScheduler.CpuCoresCount; Core++)
{
KCoreContext CoreContext = System.Scheduler.CoreContexts[Core];
if (CoreContext.ContextSwitchNeeded)
{
AThread CurrentHleThread = CoreContext.CurrentThread?.Context;
if (CurrentHleThread == null)
{
//Nothing is running, we can perform the context switch immediately.
CoreContext.ContextSwitch();
}
else if (CurrentHleThread.IsCurrentThread())
{
//Thread running on the current core, context switch will block.
DoContextSwitch = true;
}
else
{
//Thread running on another core, request a interrupt.
CurrentHleThread.RequestInterrupt();
}
}
}
}
}
else
{
DoContextSwitch = true;
}
}
else
{
Monitor.Exit(LockObj);
}
if (DoContextSwitch)
{
System.Scheduler.ContextSwitch();
}
}
public void Leave()
{
if (_recursionCount == 0)
{
return;
}
bool doContextSwitch = false;
if (--_recursionCount == 0)
{
if (_system.Scheduler.ThreadReselectionRequested)
{
_system.Scheduler.SelectThreads();
}
Monitor.Exit(LockObj);
if (_system.Scheduler.MultiCoreScheduling)
{
lock (_system.Scheduler.CoreContexts)
{
for (int core = 0; core < KScheduler.CpuCoresCount; core++)
{
KCoreContext coreContext = _system.Scheduler.CoreContexts[core];
if (coreContext.ContextSwitchNeeded)
{
CpuThread currentHleThread = coreContext.CurrentThread?.Context;
if (currentHleThread == null)
{
//Nothing is running, we can perform the context switch immediately.
coreContext.ContextSwitch();
}
else if (currentHleThread.IsCurrentThread())
{
//Thread running on the current core, context switch will block.
doContextSwitch = true;
}
else
{
//Thread running on another core, request a interrupt.
currentHleThread.RequestInterrupt();
}
}
}
}
}
else
{
doContextSwitch = true;
}
}
else
{
Monitor.Exit(LockObj);
}
if (doContextSwitch)
{
_system.Scheduler.ContextSwitch();
}
}
public void ContextSwitch()
{
lock (CoreContexts)
{
if (MultiCoreScheduling)
{
int selectedCount = 0;
for (int core = 0; core < CpuCoresCount; core++)
{
KCoreContext coreContext = CoreContexts[core];
if (coreContext.ContextSwitchNeeded && (coreContext.CurrentThread?.Context.IsCurrentThread() ?? false))
{
coreContext.ContextSwitch();
}
if (coreContext.CurrentThread?.Context.IsCurrentThread() ?? false)
{
selectedCount++;
}
}
if (selectedCount == 0)
{
CoreManager.Reset(Thread.CurrentThread);
}
else if (selectedCount == 1)
{
CoreManager.Set(Thread.CurrentThread);
}
else
{
throw new InvalidOperationException("Thread scheduled in more than one core!");
}
}
else
{
KThread currentThread = CoreContexts[_currentCore].CurrentThread;
bool hasThreadExecuting = currentThread != null;
if (hasThreadExecuting)
{
//If this is not the thread that is currently executing, we need
//to request an interrupt to allow safely starting another thread.
if (!currentThread.Context.IsCurrentThread())
{
currentThread.Context.RequestInterrupt();
return;
}
CoreManager.Reset(currentThread.Context.Work);
}
//Advance current core and try picking a thread,
//keep advancing if it is null.
for (int core = 0; core < 4; core++)
{
_currentCore = (_currentCore + 1) % CpuCoresCount;
KCoreContext coreContext = CoreContexts[_currentCore];
coreContext.UpdateCurrentThread();
if (coreContext.CurrentThread != null)
{
coreContext.CurrentThread.ClearExclusive();
CoreManager.Set(coreContext.CurrentThread.Context.Work);
coreContext.CurrentThread.Context.Execute();
break;
}
}
//If nothing was running before, then we are on a "external"
//HLE thread, we don't need to wait.
if (!hasThreadExecuting)
{
return;
}
}
}
CoreManager.Wait(Thread.CurrentThread);
}