From d54e2504a0a7d6d16fa8c60e2805a2e961187b65 Mon Sep 17 00:00:00 2001
From: Timothy Schenk <admin@rainote.dev>
Date: Thu, 10 Aug 2023 22:07:40 +0200
Subject: [PATCH] feat: add basic benchmark for binary parsing

---
 Benchmarks/Benchmarks.csproj             | 15 +++++++
 Benchmarks/BinaryConversionBenchmarks.cs | 50 ++++++++++++++++++++++++
 Benchmarks/Program.cs                    | 12 ++++++
 3 files changed, 77 insertions(+)
 create mode 100644 Benchmarks/Benchmarks.csproj
 create mode 100644 Benchmarks/BinaryConversionBenchmarks.cs
 create mode 100644 Benchmarks/Program.cs

diff --git a/Benchmarks/Benchmarks.csproj b/Benchmarks/Benchmarks.csproj
new file mode 100644
index 0000000..3d08c42
--- /dev/null
+++ b/Benchmarks/Benchmarks.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <LangVersion>default</LangVersion>
+        <TargetFramework>net7.0</TargetFramework>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="BenchmarkDotNet" Version="0.13.7" />
+    </ItemGroup>
+
+</Project>
diff --git a/Benchmarks/BinaryConversionBenchmarks.cs b/Benchmarks/BinaryConversionBenchmarks.cs
new file mode 100644
index 0000000..ee9961d
--- /dev/null
+++ b/Benchmarks/BinaryConversionBenchmarks.cs
@@ -0,0 +1,50 @@
+using System.Security.Cryptography;
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Jobs;
+using BenchmarkDotNet.Order;
+
+namespace Benchmarks;
+
+[SimpleJob(RuntimeMoniker.NativeAot70)]
+[SimpleJob(RuntimeMoniker.Net70)]
+[SimpleJob(RuntimeMoniker.Net60)]
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[RankColumn]
+[MemoryDiagnoser]
+[ExceptionDiagnoser]
+[ThreadingDiagnoser]
+[DisassemblyDiagnoser]
+public class BinaryConversionBenchmarks
+{
+    private byte[] data;
+    private int offset;
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        data = RandomNumberGenerator.GetBytes(4000);
+        offset = RandomNumberGenerator.GetInt32(0, 3500);
+    }
+
+    [Benchmark]
+    public Int16 BitConverterTest()
+    {
+        return BitConverter.ToInt16(data, offset);
+    }
+
+    [Benchmark]
+    public Int16 BinaryReader()
+    {
+        using MemoryStream ms = new MemoryStream(data);
+        using BinaryReader reader = new BinaryReader(ms);
+        reader.BaseStream.Position = offset;
+        return reader.ReadInt16();
+    }
+
+    [Benchmark]
+    public Int16 BinaryPrimitives()
+    {
+        return System.Buffers.Binary.BinaryPrimitives.ReadInt16LittleEndian(
+            new ArraySegment<byte>(data, offset, sizeof(short)));
+    }
+}
\ No newline at end of file
diff --git a/Benchmarks/Program.cs b/Benchmarks/Program.cs
new file mode 100644
index 0000000..2e87545
--- /dev/null
+++ b/Benchmarks/Program.cs
@@ -0,0 +1,12 @@
+using System.Reflection;
+using BenchmarkDotNet.Running;
+
+namespace Benchmarks;
+
+internal class Program
+{
+    public static void Main(string[] args)
+    {
+        BenchmarkRunner.Run(Assembly.GetExecutingAssembly());
+    }
+}
\ No newline at end of file