From 684020ae2d7d6d366bf9e5ff0e91e3a8b1f2a6a9 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Sat, 10 Jun 2017 15:43:04 +0200
Subject: [PATCH] Updated benchmarks

- Update BenchmarkDotNet
- Added measure benchmark
- Add memory diagnoser
---
 .../Avalonia.Benchmarks.csproj                |  3 +-
 tests/Avalonia.Benchmarks/Layout/Measure.cs   | 65 +++++++++++++++++++
 .../Styling/ApplyStyling.cs                   |  1 +
 3 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 tests/Avalonia.Benchmarks/Layout/Measure.cs

diff --git a/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj b/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
index 1f5ebac203..21d7b186b4 100644
--- a/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
+++ b/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
@@ -49,6 +49,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Layout\Measure.cs" />
     <Compile Include="Styling\ApplyStyling.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -100,7 +101,7 @@
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.9.2" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.10.8" />
   </ItemGroup>
   <Import Project="$(MSBuildThisFileDirectory)..\..\src\Shared\nuget.workaround.targets" />
 </Project>
\ No newline at end of file
diff --git a/tests/Avalonia.Benchmarks/Layout/Measure.cs b/tests/Avalonia.Benchmarks/Layout/Measure.cs
new file mode 100644
index 0000000000..d1fdae9971
--- /dev/null
+++ b/tests/Avalonia.Benchmarks/Layout/Measure.cs
@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using Avalonia.Controls;
+using Avalonia.Layout;
+using Avalonia.UnitTests;
+using BenchmarkDotNet.Attributes;
+
+namespace Avalonia.Benchmarks.Layout
+{
+    [MemoryDiagnoser]
+    public class Measure : IDisposable
+    {
+        private IDisposable _app;
+        private TestRoot root;
+        private List<Control> controls = new List<Control>();
+
+        public Measure()
+        {
+            _app = UnitTestApplication.Start(TestServices.RealLayoutManager);
+
+            var panel = new StackPanel();
+            root = new TestRoot { Child = panel };
+            controls.Add(panel);
+            CreateChildren(panel, 3, 5);
+            LayoutManager.Instance.ExecuteInitialLayoutPass(root);
+        }
+
+        public void Dispose()
+        {
+            _app.Dispose();
+        }
+
+        [Benchmark]
+        public void Remeasure_Half()
+        {
+            var random = new Random(1);
+
+            foreach (var control in controls)
+            {
+                if (random.Next(2) == 0)
+                {
+                    control.InvalidateMeasure();
+                }
+            }
+
+            LayoutManager.Instance.ExecuteLayoutPass();
+        }
+
+        private void CreateChildren(IPanel parent, int childCount, int iterations)
+        {
+            for (var i = 0; i < childCount; ++i)
+            {
+                var control = new StackPanel();
+                parent.Children.Add(control);
+
+                if (iterations > 0)
+                {
+                    CreateChildren(control, childCount, iterations - 1);
+                }
+
+                controls.Add(control);
+            }
+        }
+    }
+}
diff --git a/tests/Avalonia.Benchmarks/Styling/ApplyStyling.cs b/tests/Avalonia.Benchmarks/Styling/ApplyStyling.cs
index 0af451efd2..33af55fdf9 100644
--- a/tests/Avalonia.Benchmarks/Styling/ApplyStyling.cs
+++ b/tests/Avalonia.Benchmarks/Styling/ApplyStyling.cs
@@ -11,6 +11,7 @@ using Avalonia.VisualTree;
 
 namespace Avalonia.Benchmarks.Styling
 {
+    [MemoryDiagnoser]
     public class ApplyStyling : IDisposable
     {
         private IDisposable _app;