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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using AnalyzerRunner;
using BenchmarkDotNet.Attributes;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Classification;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.MSBuild;
using Microsoft.CodeAnalysis.PooledObjects;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.CodeAnalysis.Storage;
using Microsoft.CodeAnalysis.Text;
namespace IdeCoreBenchmarks
{
[MemoryDiagnoser]
public class ClassificationBenchmarks
{
string _solutionPath;
MSBuildWorkspace _workspace;
Solution _solution;
[GlobalSetup]
public void GlobalSetup()
{
RestoreCompilerSolution();
}
[IterationSetup]
public void IterationSetup() => LoadSolutionAsync().Wait();
private void RestoreCompilerSolution()
{
var roslynRoot = Environment.GetEnvironmentVariable(Program.RoslynRootPathEnvVariableName);
_solutionPath = Path.Combine(roslynRoot, @"Roslyn.sln");
var restoreOperation = Process.Start("dotnet", $"restore /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1 /p:Deterministic=true /p:Optimize=true {_solutionPath}");
restoreOperation.WaitForExit();
if (restoreOperation.ExitCode != 0)
throw new ArgumentException($"Unable to restore {_solutionPath}");
}
private async Task LoadSolutionAsync()
{
var roslynRoot = Environment.GetEnvironmentVariable(Program.RoslynRootPathEnvVariableName);
var solutionPath = Path.Combine(roslynRoot, "Roslyn.sln");
if (!File.Exists(solutionPath))
throw new ArgumentException("Couldn't find Roslyn.sln");
Console.WriteLine("Found Roslyn.sln: " + Process.GetCurrentProcess().Id);
var assemblies = MSBuildMefHostServices.DefaultAssemblies
.Add(typeof(AnalyzerRunnerHelper).Assembly)
.Add(typeof(FindReferencesBenchmarks).Assembly);
var services = MefHostServices.Create(assemblies);
_workspace = MSBuildWorkspace.Create(new Dictionary<string, string>
{
// Use the latest language version to force the full set of available analyzers to run on the project.
{ "LangVersion", "preview" },
}, services);
if (_workspace == null)
throw new ArgumentException("Couldn't create workspace");
Console.WriteLine("Opening roslyn. Attach to: " + Process.GetCurrentProcess().Id);
var start = DateTime.Now;
_solution = await _workspace.OpenSolutionAsync(solutionPath, progress: null, CancellationToken.None);
Console.WriteLine("Finished opening roslyn: " + (DateTime.Now - start));
}
protected static async Task<ImmutableArray<ClassifiedSpan>> GetSemanticClassificationsAsync(Document document, TextSpan span)
{
var service = document.GetRequiredLanguageService<IClassificationService>();
using var _ = Classifier.GetPooledList(out var result);
await service.AddSemanticClassificationsAsync(document, span, ClassificationOptions.Default, result, CancellationToken.None);
return result.ToImmutableArray();
}
[Benchmark]
public void ClassifyDocument()
{
var project = _solution.Projects.First(p => p.AssemblyName == "Microsoft.CodeAnalysis");
foreach (var document in project.Documents)
{
var text = document.GetTextAsync().Result.ToString();
var span = new TextSpan(0, text.Length);
_ = GetSemanticClassificationsAsync(document, span);
}
}
[IterationCleanup]
public void Cleanup()
{
_workspace?.Dispose();
_workspace = null;
_solution = null;
}
}
}
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