Ryujinx/Ryujinx.HLE/HOS/Kernel/Threading/KConditionVariable.cs
gdkchan 48278905d1
Rewrite scheduler context switch code (#1786)
* Rewrite scheduler context switch code

* Fix race in UnmapIpcRestorePermission

* Fix thread exit issue that could leave the scheduler in a invalid state

* Change context switch method to not wait on guest thread, remove spin wait, use SignalAndWait to pass control

* Remove multi-core setting (it is always on now)

* Re-enable assert

* Remove multicore from default config and schema

* Fix race in KTimeManager
2020-12-09 19:20:05 -03:00

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2 KiB
C#

using System.Collections.Generic;
using System.Threading;
namespace Ryujinx.HLE.HOS.Kernel.Threading
{
static class KConditionVariable
{
public static void Wait(KernelContext context, LinkedList<KThread> threadList, object mutex, long timeout)
{
KThread currentThread = KernelStatic.GetCurrentThread();
context.CriticalSection.Enter();
Monitor.Exit(mutex);
currentThread.Withholder = threadList;
currentThread.Reschedule(ThreadSchedState.Paused);
currentThread.WithholderNode = threadList.AddLast(currentThread);
if (currentThread.ShallBeTerminated ||
currentThread.SchedFlags == ThreadSchedState.TerminationPending)
{
threadList.Remove(currentThread.WithholderNode);
currentThread.Reschedule(ThreadSchedState.Running);
currentThread.Withholder = null;
context.CriticalSection.Leave();
}
else
{
if (timeout > 0)
{
context.TimeManager.ScheduleFutureInvocation(currentThread, timeout);
}
context.CriticalSection.Leave();
if (timeout > 0)
{
context.TimeManager.UnscheduleFutureInvocation(currentThread);
}
}
Monitor.Enter(mutex);
}
public static void NotifyAll(KernelContext context, LinkedList<KThread> threadList)
{
context.CriticalSection.Enter();
LinkedListNode<KThread> node = threadList.First;
for (; node != null; node = threadList.First)
{
KThread thread = node.Value;
threadList.Remove(thread.WithholderNode);
thread.Withholder = null;
thread.Reschedule(ThreadSchedState.Running);
}
context.CriticalSection.Leave();
}
}
}