Merge pull request #6521 from peppy/async-disposal-fix

Reduce overhead of async disposal

Author: smoogipoo

osu.Framework.Benchmarks/BenchmarkAsyncDisposal.cs

@@ -0,0 +1,35 @@
+// Copyright (c) ppy Pty Ltd <[email protected]>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using BenchmarkDotNet.Attributes;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+
+namespace osu.Framework.Benchmarks
+{
+    [MemoryDiagnoser]
+    public partial class BenchmarkAsyncDisposal
+    {
+        private readonly List<Drawable> objects = new List<Drawable>();
+
+        [GlobalSetup]
+        [OneTimeSetUp]
+        public virtual void SetUp()
+        {
+            objects.Clear();
+            for (int i = 0; i < 10000; i++)
+                objects.Add(new Box());
+        }
+
+        [Test]
+        [Benchmark]
+        public void Run()
+        {
+            objects.ForEach(AsyncDisposalQueue.Enqueue);
+            AsyncDisposalQueue.WaitForEmpty();
+        }
+    }
+}

osu.Framework/Allocation/AsyncDisposalQueue.cs

@@ -17,7 +17,7 @@ namespace osu.Framework.Allocation
     /// </summary>
     internal static class AsyncDisposalQueue
     {
-        private static readonly GlobalStatistic<string> last_disposal = GlobalStatistics.Get<string>("Drawable", "Last disposal");
+        private static readonly GlobalStatistic<Type> last_disposal = GlobalStatistics.Get<Type>("Drawable", "Last disposal");
 
         private static Task runTask;
 
@@ -62,7 +62,7 @@ public static void Enqueue(IDisposable disposable)
                     {
                         ref var item = ref itemsToDispose[i];
 
-                        last_disposal.Value = item.ToString();
+                        last_disposal.Value = item.GetType();
 
                         item.Dispose();
                         item = null;

osu.Framework/Statistics/GlobalStatistic.cs

@@ -3,6 +3,9 @@
 
 #nullable disable
 
+using System;
+using osu.Framework.Extensions.TypeExtensions;
+
 namespace osu.Framework.Statistics
 {
     public class GlobalStatistic<T> : IGlobalStatistic
@@ -23,6 +26,9 @@ public string DisplayValue
             {
                 switch (Value)
                 {
+                    case Type t:
+                        return t.ReadableName();
+
                     case double d:
                         return d.ToString("#,0.##");