Add benchmark workflow and update benchmarking code

.github/workflows/dotnetcore.yml

@@ -38,3 +38,32 @@ jobs:
       run: dotnet build --configuration Release --no-restore
     - name: Test
       run: dotnet test --no-restore --verbosity normal
+
+  benchmark-on-pr:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+
+      - name: Setup .NET 9
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version:  '9.0.x'
+
+      - name: Ensure results directory exists
+        run: |
+          mkdir -p benchmark/Razor.Template.Core.PerfBenchmark/results
+          touch benchmark/Razor.Template.Core.PerfBenchmark/results/.gitkeep
+
+      - name: Run benchmark
+        run: dotnet run -c Release --project benchmark/Razor.Template.Core.PerfBenchmark/Razor.Template.Core.PerfBenchmark.csproj
+
+      - name: Commit benchmark results
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git add benchmark/Razor.Template.Core.PerfBenchmark/results/
+          git commit -m "chore: update benchmark report [skip ci]" || echo "No changes to commit"
+          git push origin HEAD:${{ github.head_ref }}

benchmark/Razor.Template.Core.PerfBenchmark/Program.cs

@@ -1,4 +1,5 @@
-using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Analysers;
+using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Configs;
 using BenchmarkDotNet.Diagnosers;
 using BenchmarkDotNet.Exporters;
@@ -8,6 +9,7 @@
 
 var config = ManualConfig.CreateMinimumViable()
     .AddExporter(MarkdownExporter.GitHub)
+    .AddAnalyser(EnvironmentAnalyser.Default)
     .WithArtifactsPath(".");
 
 BenchmarkRunner.Run<RazorTemplatingCoreBenchMark>(config);

benchmark/Razor.Template.Core.PerfBenchmark/Razor.Template.Core.PerfBenchmark.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>