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Implement the synchronization primitives like the Horizon kernel does (#97)

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* Started to work in improving the sync primitives

* Some fixes

* Check that the mutex address matches before waking a waiting thread

* Add MutexOwner field to keep track of the thread owning the mutex, update wait list when priority changes, other tweaks

* Add new priority information to the log

* SvcSetThreadPriority should update just the WantedPriority
This commit is contained in:
gdkchan 2018-04-21 16:07:16 -03:00 • committed by GitHub
parent 267ea14cb5
commit 90279d96ea
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 577 additions and 375 deletions
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96
Ryujinx.Core/OsHle/Handles/KThread.cs
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@ -1,4 +1,5 @@
using ChocolArm64;
using System;
namespace Ryujinx.Core.OsHle.Handles
{
@ -6,10 +7,20 @@ namespace Ryujinx.Core.OsHle.Handles
{
public AThread Thread { get; private set; }
public KThread MutexOwner { get; set; }
public KThread NextMutexThread { get; set; }
public KThread NextCondVarThread { get; set; }
public long MutexAddress { get; set; }
public long CondVarAddress { get; set; }
public int ActualPriority { get; private set; }
public int WantedPriority { get; private set; }
public int ProcessorId { get; private set; }
public int Priority { get; set; }
public int Handle { get; set; }
public int WaitHandle { get; set; }
public int ThreadId => Thread.ThreadId;
@ -17,7 +28,86 @@ namespace Ryujinx.Core.OsHle.Handles
{
this.Thread = Thread;
this.ProcessorId = ProcessorId;
this.Priority = Priority;
ActualPriority = WantedPriority = Priority;
}
public void SetPriority(int Priority)
{
WantedPriority = Priority;
UpdatePriority();
}
public void UpdatePriority()
{
int OldPriority = ActualPriority;
int CurrPriority = WantedPriority;
if (NextMutexThread != null && CurrPriority > NextMutexThread.WantedPriority)
{
CurrPriority = NextMutexThread.WantedPriority;
}
if (CurrPriority != OldPriority)
{
ActualPriority = CurrPriority;
UpdateWaitList();
MutexOwner?.UpdatePriority();
}
}
private void UpdateWaitList()
{
KThread OwnerThread = MutexOwner;
if (OwnerThread != null)
{
//The MutexOwner field should only be non null when the thread is
//waiting for the lock, and the lock belongs to another thread.
if (OwnerThread == this)
{
throw new InvalidOperationException();
}
lock (OwnerThread)
{
//Remove itself from the list.
KThread CurrThread = OwnerThread;
while (CurrThread.NextMutexThread != null)
{
if (CurrThread.NextMutexThread == this)
{
CurrThread.NextMutexThread = NextMutexThread;
break;
}
CurrThread = CurrThread.NextMutexThread;
}
//Re-add taking new priority into account.
CurrThread = OwnerThread;
while (CurrThread.NextMutexThread != null)
{
if (CurrThread.NextMutexThread.ActualPriority < ActualPriority)
{
break;
}
CurrThread = CurrThread.NextMutexThread;
}
NextMutexThread = CurrThread.NextMutexThread;
CurrThread.NextMutexThread = this;
}
}
}
}
}