mirror of
https://github.com/GreemDev/Ryujinx.git
synced 2024-12-25 17:15:46 +00:00
400 lines
No EOL
11 KiB
C#
400 lines
No EOL
11 KiB
C#
using Ryujinx.Core.Logging;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Threading;
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namespace Ryujinx.Core.OsHle.Handles
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{
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class KProcessScheduler : IDisposable
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{
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private const int LowestPriority = 0x40;
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private class SchedulerThread : IDisposable
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{
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public KThread Thread { get; private set; }
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public bool IsActive { get; set; }
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public AutoResetEvent WaitSync { get; private set; }
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public ManualResetEvent WaitActivity { get; private set; }
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public AutoResetEvent WaitSched { get; private set; }
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public SchedulerThread(KThread Thread)
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{
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this.Thread = Thread;
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IsActive = true;
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WaitSync = new AutoResetEvent(false);
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WaitActivity = new ManualResetEvent(true);
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WaitSched = new AutoResetEvent(false);
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}
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public void Dispose()
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{
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Dispose(true);
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}
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protected virtual void Dispose(bool Disposing)
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{
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if (Disposing)
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{
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WaitSync.Dispose();
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WaitActivity.Dispose();
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WaitSched.Dispose();
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}
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}
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}
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private class ThreadQueue
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{
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private List<SchedulerThread> Threads;
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public ThreadQueue()
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{
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Threads = new List<SchedulerThread>();
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}
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public void Push(SchedulerThread Thread)
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{
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lock (Threads)
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{
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Threads.Add(Thread);
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}
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}
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public SchedulerThread Pop(int MinPriority = LowestPriority)
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{
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lock (Threads)
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{
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SchedulerThread SchedThread;
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int HighestPriority = MinPriority;
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int HighestPrioIndex = -1;
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for (int Index = 0; Index < Threads.Count; Index++)
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{
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SchedThread = Threads[Index];
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if (HighestPriority > SchedThread.Thread.ActualPriority)
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{
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HighestPriority = SchedThread.Thread.ActualPriority;
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HighestPrioIndex = Index;
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}
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}
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if (HighestPrioIndex == -1)
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{
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return null;
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}
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SchedThread = Threads[HighestPrioIndex];
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Threads.RemoveAt(HighestPrioIndex);
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return SchedThread;
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}
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}
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public bool HasThread(SchedulerThread SchedThread)
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{
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lock (Threads)
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{
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return Threads.Contains(SchedThread);
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}
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}
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public bool Remove(SchedulerThread SchedThread)
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{
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lock (Threads)
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{
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return Threads.Remove(SchedThread);
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}
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}
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}
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private ConcurrentDictionary<KThread, SchedulerThread> AllThreads;
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private ThreadQueue[] WaitingToRun;
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private HashSet<int> ActiveProcessors;
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private object SchedLock;
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private Logger Log;
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public KProcessScheduler(Logger Log)
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{
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this.Log = Log;
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AllThreads = new ConcurrentDictionary<KThread, SchedulerThread>();
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WaitingToRun = new ThreadQueue[4];
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for (int Index = 0; Index < 4; Index++)
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{
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WaitingToRun[Index] = new ThreadQueue();
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}
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ActiveProcessors = new HashSet<int>();
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SchedLock = new object();
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}
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public void StartThread(KThread Thread)
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{
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lock (SchedLock)
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{
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SchedulerThread SchedThread = new SchedulerThread(Thread);
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if (!AllThreads.TryAdd(Thread, SchedThread))
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{
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return;
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}
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if (ActiveProcessors.Add(Thread.ProcessorId))
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{
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Thread.Thread.Execute();
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PrintDbgThreadInfo(Thread, "running.");
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}
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else
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{
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WaitingToRun[Thread.ProcessorId].Push(SchedThread);
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PrintDbgThreadInfo(Thread, "waiting to run.");
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}
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}
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}
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public void RemoveThread(KThread Thread)
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{
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PrintDbgThreadInfo(Thread, "exited.");
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lock (SchedLock)
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{
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if (AllThreads.TryRemove(Thread, out SchedulerThread SchedThread))
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{
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WaitingToRun[Thread.ProcessorId].Remove(SchedThread);
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SchedThread.Dispose();
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}
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SchedulerThread NewThread = WaitingToRun[Thread.ProcessorId].Pop();
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if (NewThread == null)
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{
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Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {Thread.ProcessorId}!");
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ActiveProcessors.Remove(Thread.ProcessorId);
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return;
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}
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RunThread(NewThread);
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}
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}
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public void SetThreadActivity(KThread Thread, bool Active)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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throw new InvalidOperationException();
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}
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SchedThread.IsActive = Active;
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if (Active)
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{
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SchedThread.WaitActivity.Set();
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}
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else
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{
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SchedThread.WaitActivity.Reset();
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}
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}
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public void EnterWait(KThread Thread)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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throw new InvalidOperationException();
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}
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Suspend(Thread.ProcessorId);
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SchedThread.WaitSync.WaitOne();
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TryResumingExecution(SchedThread);
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}
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public bool EnterWait(KThread Thread, int Timeout)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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throw new InvalidOperationException();
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}
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Suspend(Thread.ProcessorId);
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bool Result = SchedThread.WaitSync.WaitOne(Timeout);
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TryResumingExecution(SchedThread);
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return Result;
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}
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public void WakeUp(KThread Thread)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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throw new InvalidOperationException();
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}
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SchedThread.WaitSync.Set();
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}
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public void Suspend(int ProcessorId)
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{
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lock (SchedLock)
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{
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SchedulerThread SchedThread = WaitingToRun[ProcessorId].Pop();
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if (SchedThread != null)
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{
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RunThread(SchedThread);
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}
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else
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{
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Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {ProcessorId}!");
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ActiveProcessors.Remove(ProcessorId);
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}
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}
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}
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public void Yield(KThread Thread)
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{
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PrintDbgThreadInfo(Thread, "yielded execution.");
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if (IsActive(Thread))
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{
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lock (SchedLock)
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{
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SchedulerThread SchedThread = WaitingToRun[Thread.ProcessorId].Pop(Thread.ActualPriority);
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if (SchedThread == null)
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{
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PrintDbgThreadInfo(Thread, "resumed because theres nothing better to run.");
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return;
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}
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if (SchedThread != null)
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{
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RunThread(SchedThread);
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}
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}
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}
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else
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{
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//Just stop running the thread if it's not active,
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//and run whatever is waiting to run with the higuest priority.
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Suspend(Thread.ProcessorId);
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}
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Resume(Thread);
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}
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public void Resume(KThread Thread)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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throw new InvalidOperationException();
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}
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TryResumingExecution(SchedThread);
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}
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private void TryResumingExecution(SchedulerThread SchedThread)
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{
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KThread Thread = SchedThread.Thread;
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PrintDbgThreadInfo(Thread, "trying to resume...");
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SchedThread.WaitActivity.WaitOne();
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lock (SchedLock)
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{
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if (ActiveProcessors.Add(Thread.ProcessorId))
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{
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PrintDbgThreadInfo(Thread, "resuming execution...");
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return;
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}
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WaitingToRun[Thread.ProcessorId].Push(SchedThread);
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PrintDbgThreadInfo(Thread, "entering wait state...");
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}
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SchedThread.WaitSched.WaitOne();
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PrintDbgThreadInfo(Thread, "resuming execution...");
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}
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private void RunThread(SchedulerThread SchedThread)
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{
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if (!SchedThread.Thread.Thread.Execute())
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{
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SchedThread.WaitSched.Set();
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}
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else
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{
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PrintDbgThreadInfo(SchedThread.Thread, "running.");
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}
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}
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private bool IsActive(KThread Thread)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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throw new InvalidOperationException();
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}
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return SchedThread.IsActive;
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}
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private void PrintDbgThreadInfo(KThread Thread, string Message)
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{
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Log.PrintDebug(LogClass.KernelScheduler, "(" +
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"ThreadId = " + Thread.ThreadId + ", " +
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"ProcessorId = " + Thread.ProcessorId + ", " +
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"ActualPriority = " + Thread.ActualPriority + ", " +
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"WantedPriority = " + Thread.WantedPriority + ") " + Message);
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}
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public void Dispose()
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{
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Dispose(true);
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}
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protected virtual void Dispose(bool Disposing)
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{
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if (Disposing)
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{
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foreach (SchedulerThread SchedThread in AllThreads.Values)
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{
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SchedThread.Dispose();
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}
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}
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}
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}
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} |