mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-19 21:52:22 +00:00
Fix some races in SvcThreadSync and change the way how yield works
This commit is contained in:
parent
7a8fbcf89f
commit
73a3233d57
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@ -1,6 +1,7 @@
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using Ryujinx.Core.Logging;
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using System;
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using System.Collections.Concurrent;
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using System.Threading;
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namespace Ryujinx.Core.OsHle.Handles
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{
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@ -10,7 +11,7 @@ namespace Ryujinx.Core.OsHle.Handles
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private ThreadQueue WaitingToRun;
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private int ActiveCores;
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private KThread[] CoreThreads;
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private object SchedLock;
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@ -24,6 +25,8 @@ namespace Ryujinx.Core.OsHle.Handles
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WaitingToRun = new ThreadQueue();
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CoreThreads = new KThread[4];
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SchedLock = new object();
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}
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@ -38,7 +41,7 @@ namespace Ryujinx.Core.OsHle.Handles
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return;
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}
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if (AddActiveCore(Thread))
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if (TryAddToCore(Thread))
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{
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Thread.Thread.Execute();
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@ -74,7 +77,7 @@ namespace Ryujinx.Core.OsHle.Handles
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{
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Log.PrintDebug(LogClass.KernelScheduler, $"Nothing to run on core {ActualCore}!");
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RemoveActiveCore(ActualCore);
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CoreThreads[ActualCore] = null;
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return;
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}
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@ -104,44 +107,38 @@ namespace Ryujinx.Core.OsHle.Handles
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}
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}
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public void EnterWait(KThread Thread)
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public void EnterWait(KThread Thread, int TimeoutMs = Timeout.Infinite)
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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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SchedulerThread SchedThread = AllThreads[Thread];
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Suspend(Thread);
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SchedThread.WaitSync.WaitOne();
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SchedThread.WaitSync.WaitOne(TimeoutMs);
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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);
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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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AllThreads[Thread].WaitSync.Set();
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}
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SchedThread.WaitSync.Set();
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public void TryToRun(KThread Thread)
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{
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lock (SchedLock)
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{
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if (AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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if (WaitingToRun.HasThread(SchedThread) && TryAddToCore(Thread))
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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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SetReschedule(Thread.ProcessorId);
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}
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}
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}
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}
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public void Suspend(KThread Thread)
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@ -150,6 +147,8 @@ namespace Ryujinx.Core.OsHle.Handles
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{
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PrintDbgThreadInfo(Thread, "suspended.");
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AllThreads[Thread].NeedsReschedule = false;
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int ActualCore = Thread.ActualCore;
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SchedulerThread SchedThread = WaitingToRun.Pop(ActualCore);
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@ -158,84 +157,76 @@ namespace Ryujinx.Core.OsHle.Handles
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{
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SchedThread.Thread.ActualCore = ActualCore;
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CoreThreads[ActualCore] = SchedThread.Thread;
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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 {Thread.ActualCore}!");
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RemoveActiveCore(ActualCore);
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CoreThreads[ActualCore] = null;
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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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public void SetReschedule(int Core)
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{
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PrintDbgThreadInfo(Thread, "yielded execution.");
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if (IsActive(Thread))
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lock (SchedLock)
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{
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KThread Thread = CoreThreads[Core];
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if (Thread != null && AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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SchedThread.NeedsReschedule = true;
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}
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}
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}
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public void Reschedule(KThread Thread)
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{
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SchedulerThread SchedThread = AllThreads[Thread];
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bool NeedsReschedule;
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lock (SchedLock)
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{
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NeedsReschedule = SchedThread.NeedsReschedule;
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SchedThread.NeedsReschedule = false;
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}
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if (NeedsReschedule)
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{
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PrintDbgThreadInfo(Thread, "yielded execution.");
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lock (SchedLock)
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{
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int ActualCore = Thread.ActualCore;
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SchedulerThread SchedThread = WaitingToRun.Pop(ActualCore, Thread.ActualPriority);
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SchedulerThread NewThread = WaitingToRun.Pop(ActualCore, Thread.ActualPriority);
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if (SchedThread == null)
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if (NewThread == 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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SchedThread.Thread.ActualCore = ActualCore;
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NewThread.Thread.ActualCore = ActualCore;
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RunThread(SchedThread);
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}
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CoreThreads[ActualCore] = NewThread.Thread;
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RunThread(NewThread);
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}
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TryResumingExecution(SchedThread);
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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);
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}
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Resume(Thread);
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}
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public bool TryRunning(KThread Thread)
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{
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//Failing to get the thread here is fine,
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//the thread may not have been started yet.
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if (AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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{
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lock (SchedLock)
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{
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if (WaitingToRun.HasThread(SchedThread) && AddActiveCore(Thread))
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{
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WaitingToRun.Remove(SchedThread);
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RunThread(SchedThread);
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return true;
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}
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}
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}
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return false;
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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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TryResumingExecution(AllThreads[Thread]);
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}
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private void TryResumingExecution(SchedulerThread SchedThread)
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@ -248,7 +239,7 @@ namespace Ryujinx.Core.OsHle.Handles
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lock (SchedLock)
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{
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if (AddActiveCore(Thread))
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if (TryAddToCore(Thread))
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{
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PrintDbgThreadInfo(Thread, "resuming execution...");
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@ -257,6 +248,8 @@ namespace Ryujinx.Core.OsHle.Handles
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WaitingToRun.Push(SchedThread);
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SetReschedule(Thread.ProcessorId);
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PrintDbgThreadInfo(Thread, "entering wait state...");
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}
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@ -287,71 +280,36 @@ namespace Ryujinx.Core.OsHle.Handles
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}
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}
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private bool IsActive(KThread Thread)
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private bool TryAddToCore(KThread Thread)
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{
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if (!AllThreads.TryGetValue(Thread, out SchedulerThread SchedThread))
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//First, try running it on Ideal Core.
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int IdealCore = Thread.IdealCore;
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if (IdealCore != -1 && CoreThreads[IdealCore] == null)
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{
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throw new InvalidOperationException();
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Thread.ActualCore = IdealCore;
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CoreThreads[IdealCore] = Thread;
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return true;
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}
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return SchedThread.IsActive;
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}
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//If that fails, then try running on any core allowed by Core Mask.
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int CoreMask = Thread.CoreMask;
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private bool AddActiveCore(KThread Thread)
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{
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int CoreMask;
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lock (SchedLock)
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for (int Core = 0; Core < CoreThreads.Length; Core++, CoreMask >>= 1)
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{
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//First, try running it on Ideal Core.
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int IdealCore = Thread.IdealCore;
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if (IdealCore != -1)
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if ((CoreMask & 1) != 0 && CoreThreads[Core] == null)
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{
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CoreMask = 1 << IdealCore;
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Thread.ActualCore = Core;
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if ((ActiveCores & CoreMask) == 0)
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{
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ActiveCores |= CoreMask;
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CoreThreads[Core] = Thread;
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Thread.ActualCore = IdealCore;
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return true;
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}
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return true;
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}
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//If that fails, then try running on any core allowed by Core Mask.
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CoreMask = Thread.CoreMask & ~ActiveCores;
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if (CoreMask != 0)
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{
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CoreMask &= -CoreMask;
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ActiveCores |= CoreMask;
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for (int Bit = 0; Bit < 32; Bit++)
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{
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if (((CoreMask >> Bit) & 1) != 0)
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{
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Thread.ActualCore = Bit;
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return true;
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}
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}
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throw new InvalidOperationException();
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}
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return false;
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}
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}
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private void RemoveActiveCore(int Core)
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{
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lock (SchedLock)
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{
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ActiveCores &= ~(1 << Core);
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}
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return false;
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}
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private void PrintDbgThreadInfo(KThread Thread, string Message)
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@ -12,6 +12,8 @@ namespace Ryujinx.Core.OsHle.Handles
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public long MutexAddress { get; set; }
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public long CondVarAddress { get; set; }
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public bool CondVarSignaled { get; set; }
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private Process Process;
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public List<KThread> MutexWaiters { get; private set; }
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@ -21,8 +23,9 @@ namespace Ryujinx.Core.OsHle.Handles
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public int ActualPriority { get; private set; }
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public int WantedPriority { get; private set; }
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public int ActualCore { get; set; }
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public int IdealCore { get; set; }
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public int ActualCore { get; set; }
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public int ProcessorId { get; set; }
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public int IdealCore { get; set; }
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public int WaitHandle { get; set; }
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@ -31,16 +34,17 @@ namespace Ryujinx.Core.OsHle.Handles
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public KThread(
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AThread Thread,
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Process Process,
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int IdealCore,
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int ProcessorId,
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int Priority)
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{
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this.Thread = Thread;
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this.Process = Process;
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this.IdealCore = IdealCore;
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this.Thread = Thread;
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this.Process = Process;
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this.ProcessorId = ProcessorId;
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this.IdealCore = ProcessorId;
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MutexWaiters = new List<KThread>();
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CoreMask = 1 << IdealCore;
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CoreMask = 1 << ProcessorId;
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ActualPriority = WantedPriority = Priority;
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}
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@ -11,6 +11,8 @@ namespace Ryujinx.Core.OsHle.Handles
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public bool IsActive { get; set; }
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public bool NeedsReschedule { 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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@ -96,6 +96,8 @@ namespace Ryujinx.Core.OsHle.Kernel
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Func(ThreadState);
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Process.Scheduler.Reschedule(Process.GetThread(ThreadState.Tpidr));
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Ns.Log.PrintDebug(LogClass.KernelSvc, $"{Func.Method.Name} ended.");
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}
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else
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@ -55,13 +55,12 @@ namespace Ryujinx.Core.OsHle.Kernel
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{
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int Handle = (int)ThreadState.X0;
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KThread CurrThread = Process.HandleTable.GetData<KThread>(Handle);
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KThread NewThread = Process.HandleTable.GetData<KThread>(Handle);
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if (CurrThread != null)
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if (NewThread != null)
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{
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Process.Scheduler.StartThread(CurrThread);
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Process.Scheduler.Yield(Process.GetThread(ThreadState.Tpidr));
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Process.Scheduler.StartThread(NewThread);
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Process.Scheduler.SetReschedule(NewThread.ProcessorId);
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ThreadState.X0 = 0;
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}
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@ -82,19 +81,19 @@ namespace Ryujinx.Core.OsHle.Kernel
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private void SvcSleepThread(AThreadState ThreadState)
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{
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ulong Ns = ThreadState.X0;
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ulong TimeoutNs = ThreadState.X0;
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KThread CurrThread = Process.GetThread(ThreadState.Tpidr);
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if (Ns == 0)
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if (TimeoutNs == 0)
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{
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Process.Scheduler.Yield(CurrThread);
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Process.Scheduler.SetReschedule(CurrThread.ActualCore);
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}
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else
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{
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Process.Scheduler.Suspend(CurrThread);
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Thread.Sleep(NsTimeConverter.GetTimeMs(Ns));
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Thread.Sleep(NsTimeConverter.GetTimeMs(TimeoutNs));
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Process.Scheduler.Resume(CurrThread);
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}
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@ -210,15 +209,7 @@ namespace Ryujinx.Core.OsHle.Kernel
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Thread.CoreMask = (int)CoreMask;
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KThread CurrThread = Process.GetThread(ThreadState.Tpidr);
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//Try yielding execution, for the case where the new
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//core mask allows the thread to run on the current core.
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Process.Scheduler.Yield(CurrThread);
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//Try running the modified thread, for the case where one
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//of the cores specified on the core mask is free.
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Process.Scheduler.TryRunning(Thread);
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Process.Scheduler.TryToRun(Thread);
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ThreadState.X0 = 0;
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}
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|
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@ -96,10 +96,7 @@ namespace Ryujinx.Core.OsHle.Kernel
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return;
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}
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if (MutexUnlock(Process.GetThread(ThreadState.Tpidr), MutexAddress))
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{
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Process.Scheduler.Yield(Process.GetThread(ThreadState.Tpidr));
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}
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MutexUnlock(Process.GetThread(ThreadState.Tpidr), MutexAddress);
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ThreadState.X0 = 0;
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}
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|
@ -157,8 +154,6 @@ namespace Ryujinx.Core.OsHle.Kernel
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return;
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}
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Process.Scheduler.Yield(Process.GetThread(ThreadState.Tpidr));
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ThreadState.X0 = 0;
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}
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@ -167,7 +162,13 @@ namespace Ryujinx.Core.OsHle.Kernel
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long CondVarAddress = (long)ThreadState.X0;
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int Count = (int)ThreadState.X1;
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CondVarSignal(CondVarAddress, Count);
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Ns.Log.PrintDebug(LogClass.KernelSvc,
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"CondVarAddress = " + CondVarAddress.ToString("x16") + ", " +
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"Count = " + Count .ToString("x8"));
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KThread CurrThread = Process.GetThread(ThreadState.Tpidr);
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CondVarSignal(CurrThread, CondVarAddress, Count);
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ThreadState.X0 = 0;
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}
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@ -179,12 +180,12 @@ namespace Ryujinx.Core.OsHle.Kernel
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int WaitThreadHandle,
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long MutexAddress)
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{
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int MutexValue = Process.Memory.ReadInt32(MutexAddress);
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Ns.Log.PrintDebug(LogClass.KernelSvc, "MutexValue = " + MutexValue.ToString("x8"));
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lock (Process.ThreadSyncLock)
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{
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int MutexValue = Process.Memory.ReadInt32(MutexAddress);
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Ns.Log.PrintDebug(LogClass.KernelSvc, "MutexValue = " + MutexValue.ToString("x8"));
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if (MutexValue != (OwnerThreadHandle | MutexHasListenersMask))
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{
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return;
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|
@ -201,20 +202,13 @@ namespace Ryujinx.Core.OsHle.Kernel
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Process.Scheduler.EnterWait(CurrThread);
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}
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private bool MutexUnlock(KThread CurrThread, long MutexAddress)
|
||||
private void MutexUnlock(KThread CurrThread, long MutexAddress)
|
||||
{
|
||||
if (CurrThread == null)
|
||||
{
|
||||
Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid mutex 0x{MutexAddress:x16}!");
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
lock (Process.ThreadSyncLock)
|
||||
{
|
||||
//This is the new thread that will not own the mutex.
|
||||
//If no threads are waiting for the lock, then it should be null.
|
||||
KThread OwnerThread = GetHighestPriority(CurrThread.MutexWaiters, MutexAddress);
|
||||
KThread OwnerThread = PopThread(CurrThread.MutexWaiters, x => x.MutexAddress == MutexAddress);
|
||||
|
||||
if (OwnerThread != null)
|
||||
{
|
||||
|
@ -240,16 +234,12 @@ namespace Ryujinx.Core.OsHle.Kernel
|
|||
Process.Scheduler.WakeUp(OwnerThread);
|
||||
|
||||
Ns.Log.PrintDebug(LogClass.KernelSvc, "Gave mutex to thread id " + OwnerThread.ThreadId + "!");
|
||||
|
||||
return true;
|
||||
}
|
||||
else
|
||||
{
|
||||
Process.Memory.WriteInt32(MutexAddress, 0);
|
||||
|
||||
Ns.Log.PrintDebug(LogClass.KernelSvc, "No threads waiting mutex!");
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -265,8 +255,10 @@ namespace Ryujinx.Core.OsHle.Kernel
|
|||
WaitThread.MutexAddress = MutexAddress;
|
||||
WaitThread.CondVarAddress = CondVarAddress;
|
||||
|
||||
lock (Process.ThreadArbiterListLock)
|
||||
lock (Process.ThreadArbiterList)
|
||||
{
|
||||
WaitThread.CondVarSignaled = false;
|
||||
|
||||
Process.ThreadArbiterList.Add(WaitThread);
|
||||
}
|
||||
|
||||
|
@ -274,58 +266,77 @@ namespace Ryujinx.Core.OsHle.Kernel
|
|||
|
||||
if (Timeout != ulong.MaxValue)
|
||||
{
|
||||
return Process.Scheduler.EnterWait(WaitThread, NsTimeConverter.GetTimeMs(Timeout));
|
||||
Process.Scheduler.EnterWait(WaitThread, NsTimeConverter.GetTimeMs(Timeout));
|
||||
|
||||
lock (Process.ThreadArbiterList)
|
||||
{
|
||||
if (!WaitThread.CondVarSignaled)
|
||||
{
|
||||
Process.ThreadArbiterList.Remove(WaitThread);
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
Process.Scheduler.EnterWait(WaitThread);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
private void CondVarSignal(long CondVarAddress, int Count)
|
||||
private void CondVarSignal(KThread CurrThread, long CondVarAddress, int Count)
|
||||
{
|
||||
lock (Process.ThreadArbiterListLock)
|
||||
lock (Process.ThreadArbiterList)
|
||||
{
|
||||
KThread CurrThread = GetHighestPriority(CondVarAddress);
|
||||
|
||||
while (CurrThread != null && (Count == -1 || Count-- > 0))
|
||||
while (Count == -1 || Count-- > 0)
|
||||
{
|
||||
AcquireMutexValue(CurrThread.MutexAddress);
|
||||
KThread WaitThread = PopThread(Process.ThreadArbiterList, x => x.CondVarAddress == CondVarAddress);
|
||||
|
||||
int MutexValue = Process.Memory.ReadInt32(CurrThread.MutexAddress);
|
||||
if (WaitThread == null)
|
||||
{
|
||||
Ns.Log.PrintDebug(LogClass.KernelSvc, "No more threads to wake up!");
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
WaitThread.CondVarSignaled = true;
|
||||
|
||||
AcquireMutexValue(WaitThread.MutexAddress);
|
||||
|
||||
int MutexValue = Process.Memory.ReadInt32(WaitThread.MutexAddress);
|
||||
|
||||
Ns.Log.PrintDebug(LogClass.KernelSvc, "MutexValue = " + MutexValue.ToString("x8"));
|
||||
|
||||
if (MutexValue == 0)
|
||||
{
|
||||
//Give the lock to this thread.
|
||||
Process.Memory.WriteInt32(CurrThread.MutexAddress, CurrThread.WaitHandle);
|
||||
Process.Memory.WriteInt32(WaitThread.MutexAddress, WaitThread.WaitHandle);
|
||||
|
||||
CurrThread.WaitHandle = 0;
|
||||
CurrThread.MutexAddress = 0;
|
||||
CurrThread.CondVarAddress = 0;
|
||||
WaitThread.WaitHandle = 0;
|
||||
WaitThread.MutexAddress = 0;
|
||||
WaitThread.CondVarAddress = 0;
|
||||
|
||||
CurrThread.MutexOwner?.UpdatePriority();
|
||||
WaitThread.MutexOwner?.UpdatePriority();
|
||||
|
||||
CurrThread.MutexOwner = null;
|
||||
WaitThread.MutexOwner = null;
|
||||
|
||||
Process.Scheduler.WakeUp(CurrThread);
|
||||
Process.Scheduler.WakeUp(WaitThread);
|
||||
}
|
||||
else
|
||||
{
|
||||
//Wait until the lock is released.
|
||||
MutexValue &= ~MutexHasListenersMask;
|
||||
|
||||
InsertWaitingMutexThread(MutexValue, CurrThread);
|
||||
InsertWaitingMutexThread(MutexValue, WaitThread);
|
||||
|
||||
MutexValue |= MutexHasListenersMask;
|
||||
|
||||
Process.Memory.WriteInt32(CurrThread.MutexAddress, MutexValue);
|
||||
Process.Memory.WriteInt32(WaitThread.MutexAddress, MutexValue);
|
||||
}
|
||||
|
||||
ReleaseMutexValue(CurrThread.MutexAddress);
|
||||
|
||||
CurrThread = GetHighestPriority(CondVarAddress);
|
||||
ReleaseMutexValue(WaitThread.MutexAddress);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -381,17 +392,7 @@ namespace Ryujinx.Core.OsHle.Kernel
|
|||
}
|
||||
}
|
||||
|
||||
private KThread GetHighestPriority(List<KThread> Threads, long MutexAddress)
|
||||
{
|
||||
return GetHighestPriority(Threads, x => x.MutexAddress == MutexAddress);
|
||||
}
|
||||
|
||||
private KThread GetHighestPriority(long CondVarAddress)
|
||||
{
|
||||
return GetHighestPriority(Process.ThreadArbiterList, x => x.CondVarAddress == CondVarAddress);
|
||||
}
|
||||
|
||||
private KThread GetHighestPriority(List<KThread> Threads, Func<KThread, bool> Predicate)
|
||||
private KThread PopThread(List<KThread> Threads, Func<KThread, bool> Predicate)
|
||||
{
|
||||
KThread Thread = Threads.OrderBy(x => x.ActualPriority).FirstOrDefault(Predicate);
|
||||
|
||||
|
|
|
@ -40,8 +40,6 @@ namespace Ryujinx.Core.OsHle
|
|||
|
||||
public List<KThread> ThreadArbiterList { get; private set; }
|
||||
|
||||
public object ThreadArbiterListLock { get; private set; }
|
||||
|
||||
public object ThreadSyncLock { get; private set; }
|
||||
|
||||
public KProcessHandleTable HandleTable { get; private set; }
|
||||
|
@ -76,8 +74,6 @@ namespace Ryujinx.Core.OsHle
|
|||
|
||||
ThreadArbiterList = new List<KThread>();
|
||||
|
||||
ThreadArbiterListLock = new object();
|
||||
|
||||
ThreadSyncLock = new object();
|
||||
|
||||
HandleTable = new KProcessHandleTable();
|
||||
|
|
Loading…
Reference in a new issue