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BenchmarkProjectGenerator.cs
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BenchmarkProjectGenerator.cs
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using System;
using System.IO;
using System.Reflection;
using BenchmarkDotNet.Extensions;
using BenchmarkDotNet.Tasks;
namespace BenchmarkDotNet
{
internal class BenchmarkProjectGenerator
{
private const string MainClassName = "Program";
public string GenerateProject(Benchmark benchmark)
{
var projectDir = CreateProjectDirectory(benchmark);
GenerateProgramFile(projectDir, benchmark);
GenerateProjectFile(projectDir, benchmark);
GenerateAppConfigFile(projectDir, benchmark.Task.Configuration);
return projectDir;
}
public void CompileCode(string directoryPath)
{
var executor = new BenchmarkExecutor();
executor.Exec("MSBuild", Path.Combine(directoryPath, MainClassName + ".csproj"));
Console.WriteLine(File.Exists(Path.Combine(directoryPath, MainClassName + ".exe")) ? "Success" : "Fail");
}
private static void GenerateProgramFile(string projectDir, Benchmark benchmark)
{
var isVoid = benchmark.Target.Method.ReturnType == typeof(void);
var operationsPerInvoke = benchmark.Target.OperationsPerInvoke;
var targetTypeNamespace = benchmark.Target.Type.Namespace;
var targetMethodReturnTypeNamespace = benchmark.Target.Method.ReturnType == typeof(void)
? "System"
: benchmark.Target.Method.ReturnType.Namespace;
var targetTypeName = benchmark.Target.Type.FullName;
var targetMethodName = benchmark.Target.Method.Name;
var targetMethodReturnType = isVoid
? "void"
: benchmark.Target.Method.ReturnType.GetCorrectTypeName();
var targetMethodResultHolder = isVoid
? "" :
$"private {targetMethodReturnType} value;";
var targetMethodHoldValue = isVoid
? ""
: "value = ";
var targetMethodDelegateType = isVoid
? "Action "
: $"Func<{targetMethodReturnType}> ";
var idleImplementation = isVoid
? ""
: $"return default({targetMethodReturnType});";
string runBenchmarkTemplate = "";
switch (benchmark.Task.Configuration.Mode)
{
case BenchmarkMode.SingleRun:
runBenchmarkTemplate = GetTemplate("BenchmarkSingleRun.txt");
break;
case BenchmarkMode.Throughput:
runBenchmarkTemplate = GetTemplate("BenchmarkThroughput.txt");
break;
}
var contentTemplate = GetTemplate("BenchmarkProgram.txt");
var content = contentTemplate.
Replace("$RunBenchmarkContent$", runBenchmarkTemplate).
Replace("$OperationsPerInvoke$", operationsPerInvoke.ToInvariantString()).
Replace("$TargetTypeNamespace$", targetTypeNamespace).
Replace("$TargetMethodReturnTypeNamespace$", targetMethodReturnTypeNamespace).
Replace("$TargetTypeName$", targetTypeName).
Replace("$TargetMethodName$", targetMethodName).
Replace("$TargetMethodResultHolder$", targetMethodResultHolder).
Replace("$TargetMethodDelegateType$", targetMethodDelegateType).
Replace("$TargetMethodHoldValue$", targetMethodHoldValue).
Replace("$TargetMethodReturnType$", targetMethodReturnType).
Replace("$IdleImplementation$", idleImplementation);
string fileName = Path.Combine(projectDir, MainClassName + ".cs");
File.WriteAllText(fileName, content);
}
private static void GenerateProjectFile(string projectDir, Benchmark benchmark)
{
var configuration = benchmark.Task.Configuration;
var platform = configuration.Platform.ToConfig();
var framework = configuration.Framework.ToConfig();
var template = GetTemplate("BenchmarkCsproj.txt");
var content = template.
Replace("$Platform$", platform).
Replace("$Framework$", framework).
Replace("$TargetAssemblyReference$", GetReferenceToAssembly(benchmark.Target.Type)).
Replace("$TargetMethodReturnTypeAssemblyReference$", GetReferenceToAssembly(benchmark.Target.Method.ReturnType));
string fileName = Path.Combine(projectDir, MainClassName + ".csproj");
File.WriteAllText(fileName, content);
}
private static string GetReferenceToAssembly(Type type)
{
var template = @" <Reference Include=""$AssemblyName$"">
<HintPath>..\$AssemblyFileName$</HintPath>
</Reference>
";
var assembly = type.Assembly;
var fileName = new FileInfo(type.Assembly.Location).Name;
return fileName == "mscorlib.dll"
? ""
: template.
Replace("$AssemblyName$", assembly.GetName(false).Name).
Replace("$AssemblyFileName$", fileName);
}
private static void GenerateAppConfigFile(string projectDir, BenchmarkConfiguration configuration)
{
var useLagacyJit = configuration.JitVersion.ToConfig();
var template = GetTemplate(configuration.JitVersion == BenchmarkJitVersion.CurrentJit ? "BenchmarkAppConfigEmpty.txt" : "BenchmarkAppConfig.txt");
var content = template.
Replace("$UseLagacyJit$", useLagacyJit);
string fileName = Path.Combine(projectDir, "app.config");
File.WriteAllText(fileName, content);
}
private static string CreateProjectDirectory(Benchmark benchmark)
{
var directoryPath = Path.Combine(Directory.GetCurrentDirectory(), benchmark.Caption);
try
{
if (Directory.Exists(directoryPath))
Directory.Delete(directoryPath, true);
}
catch (Exception)
{
// Nevermind
}
if (!Directory.Exists(directoryPath))
Directory.CreateDirectory(directoryPath);
return directoryPath;
}
private static string GetTemplate(string name)
{
var assembly = Assembly.GetExecutingAssembly();
var resourceName = "BenchmarkDotNet.Templates." + name;
using (Stream stream = assembly.GetManifestResourceStream(resourceName))
{
if (stream == null)
throw new Exception($"Resource {resourceName} not found");
using (StreamReader reader = new StreamReader(stream))
return reader.ReadToEnd();
}
}
}
}