Fix performance regression caused by the new scheduler changes (#422)

* Call interrupt less often, remove some leftovers from the old scheduler code

* Remove unneeded attribute

3 files changed, 4 insertions, 56 deletions

diff --git a/Ryujinx.HLE/HOS/Kernel/KCoreContext.cs b/Ryujinx.HLE/HOS/Kernel/KCoreContext.cs
index 70fe1a61..51f27e2a 100644
--- a/Ryujinx.HLE/HOS/Kernel/KCoreContext.cs
+++ b/Ryujinx.HLE/HOS/Kernel/KCoreContext.cs
@@ -28,7 +28,10 @@ namespace Ryujinx.HLE.HOS.Kernel
                 Thread.LastScheduledTicks = (uint)Environment.TickCount;
             }
 
-            ContextSwitchNeeded = true;
+            if (SelectedThread != CurrentThread)
+            {
+                ContextSwitchNeeded = true;
+            }
         }
 
         public void UpdateCurrentThread()
@@ -58,10 +61,5 @@ namespace Ryujinx.HLE.HOS.Kernel
                 CurrentThread.Context.Execute();
             }
         }
-
-        public void RemoveThread(KThread Thread)
-        {
-            //TODO.
-        }
     }
 }
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Kernel/SchedulerThread.cs b/Ryujinx.HLE/HOS/Kernel/SchedulerThread.cs
deleted file mode 100644
index bab7b03e..00000000
--- a/Ryujinx.HLE/HOS/Kernel/SchedulerThread.cs
+++ /dev/null
@@ -1,48 +0,0 @@
-using System;
-using System.Threading;
-
-namespace Ryujinx.HLE.HOS.Kernel
-{
-    class SchedulerThread : IDisposable
-    {
-        public KThread Thread { get; private set; }
-
-        public SchedulerThread Next { get; set; }
-
-        public bool IsActive { get; set; }
-
-        public AutoResetEvent   WaitSync     { get; private set; }
-        public ManualResetEvent WaitActivity { get; private set; }
-        public AutoResetEvent   WaitSched    { get; private set; }
-
-        public SchedulerThread(KThread Thread)
-        {
-            this.Thread = Thread;
-
-            IsActive = true;
-
-            WaitSync  = new AutoResetEvent(false);
-
-            WaitActivity = new ManualResetEvent(true);
-
-            WaitSched = new AutoResetEvent(false);
-        }
-
-        public void Dispose()
-        {
-            Dispose(true);
-        }
-
-        protected virtual void Dispose(bool Disposing)
-        {
-            if (Disposing)
-            {
-                WaitSync.Dispose();
-
-                WaitActivity.Dispose();
-
-                WaitSched.Dispose();
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Kernel/SvcThread.cs b/Ryujinx.HLE/HOS/Kernel/SvcThread.cs
index aa6e551b..dc296b06 100644
--- a/Ryujinx.HLE/HOS/Kernel/SvcThread.cs
+++ b/Ryujinx.HLE/HOS/Kernel/SvcThread.cs
@@ -81,8 +81,6 @@ namespace Ryujinx.HLE.HOS.Kernel
             CurrentThread.Exit();
 
             System.Scheduler.StopThread(CurrentThread);
-
-            System.Scheduler.CoreContexts[CurrentThread.CurrentCore].RemoveThread(CurrentThread);
         }
 
         private void SvcSleepThread(AThreadState ThreadState)