Migrate to .NET 9 (#198)

src/Ryujinx.Graphics.OpenGL/Queries/CounterQueue.cs

@@ -19,7 +19,7 @@ namespace Ryujinx.Graphics.OpenGL.Queries
         private ulong _accumulatedCounter;
         private int _waiterCount;
 
-        private readonly object _lock = new();
+        private readonly Lock _lock = new();
 
         private readonly Queue<BufferedQuery> _queryPool;
         private readonly AutoResetEvent _queuedEvent = new(false);

src/Ryujinx.Graphics.OpenGL/Queries/CounterQueueEvent.cs

@@ -24,7 +24,7 @@ namespace Ryujinx.Graphics.OpenGL.Queries
         private bool _hostAccessReserved = false;
         private int _refCount = 1; // Starts with a reference from the counter queue.
 
-        private readonly object _lock = new();
+        private readonly Lock _lock = new();
         private ulong _result = ulong.MaxValue;
         private double _divisor = 1f;
 

src/Ryujinx.Graphics.OpenGL/ResourcePool.cs

@@ -2,6 +2,7 @@ using Ryujinx.Graphics.GAL;
 using Ryujinx.Graphics.OpenGL.Image;
 using System;
 using System.Collections.Generic;
+using System.Threading;
 
 namespace Ryujinx.Graphics.OpenGL
 {
@@ -19,7 +20,7 @@ namespace Ryujinx.Graphics.OpenGL
     {
         private const int DisposedLiveFrames = 2;
 
-        private readonly object _lock = new();
+        private readonly Lock _lock = new();
         private readonly Dictionary<TextureCreateInfo, List<DisposedTexture>> _textures = new();
 
         /// <summary>

src/Ryujinx.Graphics.OpenGL/Ryujinx.Graphics.OpenGL.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <DefaultItemExcludes>$(DefaultItemExcludes);._*</DefaultItemExcludes>
   </PropertyGroup>