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CsProjClassicNetToolchain.cs
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CsProjClassicNetToolchain.cs
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using System;
using BenchmarkDotNet.Characteristics;
using BenchmarkDotNet.Environments;
using BenchmarkDotNet.Extensions;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Loggers;
using BenchmarkDotNet.Portability;
using BenchmarkDotNet.Running;
using JetBrains.Annotations;
namespace BenchmarkDotNet.Toolchains.CsProj
{
/// <summary>
/// this toolchain is designed for the new .csprojs, to build .NET 4.x benchmarks from the context of .NET Core host process
/// it does not work with the old .csprojs or project.json!
/// </summary>
[PublicAPI]
public class CsProjClassicNetToolchain : Toolchain
{
[PublicAPI] public static readonly IToolchain Net46 = new CsProjClassicNetToolchain("net46");
[PublicAPI] public static readonly IToolchain Net461 = new CsProjClassicNetToolchain("net461");
[PublicAPI] public static readonly IToolchain Net462 = new CsProjClassicNetToolchain("net462");
[PublicAPI] public static readonly IToolchain Net47 = new CsProjClassicNetToolchain("net47");
private static readonly IToolchain Default = Net46; // the lowest version we support
[PublicAPI]
public static readonly Lazy<IToolchain> Current = new Lazy<IToolchain>(GetCurrentVersion);
private string targetFrameworkMoniker;
private CsProjClassicNetToolchain(string targetFrameworkMoniker)
: base($"CsProj{targetFrameworkMoniker}",
new CsProjGenerator(targetFrameworkMoniker, platform => platform.ToConfig()),
new CsProjBuilder(targetFrameworkMoniker),
new Executor())
{
this.targetFrameworkMoniker = targetFrameworkMoniker;
}
public static IToolchain From(string targetFrameworkMoniker)
=> new CsProjClassicNetToolchain(targetFrameworkMoniker);
public override bool IsSupported(Benchmark benchmark, ILogger logger, IResolver resolver)
{
if (!base.IsSupported(benchmark, logger, resolver))
{
return false;
}
if (!RuntimeInformation.IsWindows())
{
logger.WriteLineError($"Classic .NET toolchain is supported only for Windows, benchmark '{benchmark.DisplayInfo}' will not be executed");
return false;
}
if (!HostEnvironmentInfo.GetCurrent().IsDotNetCliInstalled())
{
logger.WriteLineError($"BenchmarkDotNet requires dotnet cli toolchain to be installed, benchmark '{benchmark.DisplayInfo}' will not be executed");
return false;
}
if (benchmark.Job.HasValue(EnvMode.JitCharacteristic) && benchmark.Job.Env.Jit == Jit.LegacyJit)
{
logger.WriteLineError($"Currently dotnet cli toolchain supports only RyuJit, benchmark '{benchmark.DisplayInfo}' will not be executed");
return false;
}
#if NETCOREAPP1_1
if (benchmark.Job.HasValue(InfrastructureMode.EnvironmentVariablesCharacteristic))
{
logger.WriteLineError($"ProcessStartInfo.EnvironmentVariables is avaialable for .NET Core 2.0, benchmark '{benchmark.DisplayInfo}' will not be executed");
return false;
}
#endif
return true;
}
private static IToolchain GetCurrentVersion()
{
if (!RuntimeInformation.IsWindows())
return Net46; // we return .NET 4.6 which during validaiton will tell the user about lack of support
return GetCurrentVersionBasedOnWindowsRegistry();
}
// this logic is put to a separate method to avoid any assembly loading issues on non Windows systems
private static IToolchain GetCurrentVersionBasedOnWindowsRegistry()
{
using (var ndpKey = Microsoft.Win32.RegistryKey
.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, Microsoft.Win32.RegistryView.Registry32)
.OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
{
if (ndpKey == null)
return Default;
int releaseKey = Convert.ToInt32(ndpKey.GetValue("Release"));
// magic numbers come from https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
if (releaseKey >= 460798)
return Net47;
if (releaseKey >= 394802)
return Net462;
if (releaseKey >= 394254)
return Net461;
return Default;
}
}
// TODO: Move to a better place
[NotNull]
internal static string GetCurrentNetFrameworkVersion()
{
var toolchain = GetCurrentVersionBasedOnWindowsRegistry() as CsProjClassicNetToolchain;
if (toolchain == null)
return "?";
string version = toolchain.targetFrameworkMoniker.Replace("net", "");
return string.Join(".", version.ToCharArray());
}
}
}