mirror of
https://github.com/GreemDev/Ryujinx.git
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135 lines
3.9 KiB
C#
135 lines
3.9 KiB
C#
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using System.Collections.Generic;
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using static Ryujinx.HLE.HOS.ErrorCode;
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namespace Ryujinx.HLE.HOS.Kernel
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{
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class KSynchronization
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{
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private Horizon System;
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public KSynchronization(Horizon System)
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{
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this.System = System;
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}
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public long WaitFor(KSynchronizationObject[] SyncObjs, long Timeout, ref int HndIndex)
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{
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long Result = MakeError(ErrorModule.Kernel, KernelErr.Timeout);
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System.CriticalSectionLock.Lock();
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//Check if objects are already signaled before waiting.
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for (int Index = 0; Index < SyncObjs.Length; Index++)
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{
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if (!SyncObjs[Index].IsSignaled())
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{
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continue;
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}
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HndIndex = Index;
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System.CriticalSectionLock.Unlock();
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return 0;
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}
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if (Timeout == 0)
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{
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System.CriticalSectionLock.Unlock();
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return Result;
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}
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KThread CurrentThread = System.Scheduler.GetCurrentThread();
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if (CurrentThread.ShallBeTerminated ||
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CurrentThread.SchedFlags == ThreadSchedState.TerminationPending)
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{
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Result = MakeError(ErrorModule.Kernel, KernelErr.ThreadTerminating);
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}
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else if (CurrentThread.SyncCancelled)
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{
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CurrentThread.SyncCancelled = false;
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Result = MakeError(ErrorModule.Kernel, KernelErr.Cancelled);
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}
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else
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{
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LinkedListNode<KThread>[] SyncNodes = new LinkedListNode<KThread>[SyncObjs.Length];
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for (int Index = 0; Index < SyncObjs.Length; Index++)
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{
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SyncNodes[Index] = SyncObjs[Index].AddWaitingThread(CurrentThread);
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}
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CurrentThread.WaitingSync = true;
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CurrentThread.SignaledObj = null;
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CurrentThread.ObjSyncResult = (int)Result;
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CurrentThread.Reschedule(ThreadSchedState.Paused);
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if (Timeout > 0)
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{
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System.TimeManager.ScheduleFutureInvocation(CurrentThread, Timeout);
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}
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System.CriticalSectionLock.Unlock();
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CurrentThread.WaitingSync = false;
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if (Timeout > 0)
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{
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System.TimeManager.UnscheduleFutureInvocation(CurrentThread);
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}
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System.CriticalSectionLock.Lock();
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Result = (uint)CurrentThread.ObjSyncResult;
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HndIndex = -1;
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for (int Index = 0; Index < SyncObjs.Length; Index++)
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{
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SyncObjs[Index].RemoveWaitingThread(SyncNodes[Index]);
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if (SyncObjs[Index] == CurrentThread.SignaledObj)
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{
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HndIndex = Index;
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}
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}
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}
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System.CriticalSectionLock.Unlock();
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return Result;
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}
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public void SignalObject(KSynchronizationObject SyncObj)
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{
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System.CriticalSectionLock.Lock();
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if (SyncObj.IsSignaled())
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{
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LinkedListNode<KThread> Node = SyncObj.WaitingThreads.First;
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while (Node != null)
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{
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KThread Thread = Node.Value;
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if ((Thread.SchedFlags & ThreadSchedState.LowNibbleMask) == ThreadSchedState.Paused)
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{
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Thread.SignaledObj = SyncObj;
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Thread.ObjSyncResult = 0;
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Thread.Reschedule(ThreadSchedState.Running);
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}
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Node = Node.Next;
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}
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}
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System.CriticalSectionLock.Unlock();
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}
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}
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}
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