Add benchmark project

osu-framework.Desktop.slnf

···
       "SampleGame\\SampleGame.csproj",
       "osu.Framework.NativeLibs\\osu.Framework.NativeLibs.csproj",
       "osu.Framework.Tests\\osu.Framework.Tests.csproj",
-      "osu.Framework\\osu.Framework.csproj"
+      "osu.Framework\\osu.Framework.csproj",
+      "osu.Framework.Benchmarks\\osu.Framework.Benchmarks.csproj"
     ]
   }
 }

osu-framework.sln

···
 		osu.Framework.iOS.props = osu.Framework.iOS.props
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "osu.Framework.Benchmarks", "osu.Framework.Benchmarks\osu.Framework.Benchmarks.csproj", "{F294C804-8AE2-4020-841A-AF0D97FBE80C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
···
 		{320089C6-A141-4D3E-BD5F-C4A6CE9E567B}.Release|Any CPU.Deploy.0 = Release|Any CPU
 		{320089C6-A141-4D3E-BD5F-C4A6CE9E567B}.Release|iPhone.ActiveCfg = Release|Any CPU
 		{320089C6-A141-4D3E-BD5F-C4A6CE9E567B}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Release|iPhone.Build.0 = Release|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{F294C804-8AE2-4020-841A-AF0D97FBE80C}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

osu.Framework.Benchmarks/BenchmarkFontLoading.cs

···
+using System;
+using System.Diagnostics;
+using System.Reflection;
+using BenchmarkDotNet.Attributes;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.IO.Stores;
+using osu.Framework.Tests;
+using SixLabors.Memory;
+
+namespace osu.Framework.Benchmarks
+{
+    public class BenchmarkFontLoading : BenchmarkTest
+    {
+        private static NamespacedResourceStore<byte[]> baseResources;
+
+        public override void SetUp()
+        {
+            baseResources = new NamespacedResourceStore<byte[]>(new DllResourceStore(@"osu.Framework.dll"), @"Resources");
+        }
+
+        private static TemporaryNativeStorage sharedTemp;
+
+        private const string font_name = @"Fonts/FontAwesome5/FontAwesome-Solid";
+
+        [Benchmark]
+        public void BenchmarkRawCachingReuse()
+        {
+            sharedTemp ??= new TemporaryNativeStorage("fontstore-test" + Guid.NewGuid(), createIfEmpty: true);
+
+            using (var store = new RawCachingGlyphStore(baseResources, font_name) { CacheStorage = sharedTemp })
+                runFor(store);
+        }
+
+        [Benchmark]
+        public void BenchmarkRawCaching()
+        {
+            using (var temp = new TemporaryNativeStorage("fontstore-test" + Guid.NewGuid(), createIfEmpty: true))
+            using (var store = new RawCachingGlyphStore(baseResources, font_name) { CacheStorage = temp })
+                runFor(store);
+        }
+
+        [Benchmark]
+        public void BenchmarkSimple()
+        {
+            using (var store = new GlyphStore(baseResources, font_name))
+                runFor(store);
+        }
+
+        [Benchmark]
+        public void BenchmarkTimedExpiry()
+        {
+            SixLabors.ImageSharp.Configuration.Default.MemoryAllocator = ArrayPoolMemoryAllocator.CreateWithMinimalPooling();
+
+            using (var store = new TimedExpiryGlyphStore(baseResources, font_name))
+                runFor(store);
+        }
+
+        private void runFor(GlyphStore store)
+        {
+            store.LoadFontAsync().Wait();
+
+            foreach (var p in typeof(FontAwesome.Solid).GetProperties(BindingFlags.Public | BindingFlags.Static))
+            {
+                var icon = (IconUsage)p.GetValue(null);
+                using (var upload = store.Get(icon.Icon.ToString()))
+                    Trace.Assert(upload.Data != null);
+            }
+        }
+    }
+}

osu.Framework.Benchmarks/BenchmarkTest.cs

···
+// Copyright (c) ppy Pty Ltd <[e-mail]>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Configs;
+using BenchmarkDotNet.Running;
+using NUnit.Framework;
+
+namespace osu.Framework.Benchmarks
+{
+    [TestFixture]
+    [MemoryDiagnoser]
+    public abstract class BenchmarkTest
+    {
+        [GlobalSetup]
+        [OneTimeSetUp]
+        public virtual void SetUp()
+        {
+        }
+
+        [Test]
+        public void RunBenchmark()
+        {
+            var config = DefaultConfig.Instance.With(ConfigOptions.DisableOptimizationsValidator);
+
+            BenchmarkRunner.Run(GetType(), config);
+        }
+    }
+}

osu.Framework.Benchmarks/osu.Framework.Benchmarks.csproj

···
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netcoreapp3.0</TargetFramework>
+        <Optimize>true</Optimize>
+        <IsPackable>false</IsPackable>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="BenchmarkDotNet" Version="0.12.0" />
+        <PackageReference Include="nunit" Version="3.12.0" />
+        <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\osu.Framework.Tests\osu.Framework.Tests.csproj" />
+      <ProjectReference Include="..\osu.Framework\osu.Framework.csproj" />
+    </ItemGroup>
+
+</Project>