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| using System.Linq.Expressions;
using System.Reflection;
using System.Reflection.Emit;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Running;
using BenchmarkDotNet.Toolchains.InProcess.NoEmit;
#pragma warning disable CS8618
public static partial class Program
{
public static void Main(string[] args)
{
BenchmarkRunner.Run(typeof(BenchmarkTest));
}
}
public static partial class Program
{
public static Action<T, TU> SetPropertyInternal<T, TU>(string propertyName)
{
ParameterExpression parameter = Expression.Parameter(typeof(T), "obj");
MemberExpression property = Expression.Property(parameter, propertyName);
ParameterExpression parameter2 = Expression.Parameter(typeof(TU), "value");
BinaryExpression assign = Expression.Assign(property, Expression.Convert(parameter2, property.Type));
Expression<Action<T, TU>> expression = Expression.Lambda<Action<T, TU>>(assign, parameter, parameter2);
return expression.Compile();
}
public static Func<T, TU> GetPropertyInternal<T, TU>(string propertyName)
{
ParameterExpression parameter = Expression.Parameter(typeof(T), "test");
UnaryExpression property = Expression.Convert(Expression.Property(parameter, propertyName), typeof(TU));
Expression<Func<T, TU>> expression = Expression.Lambda<Func<T, TU>>(property, parameter);
return expression.Compile();
}
public static readonly BindingFlags Flag
= BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Static;
public static Func<T, TU> GetPropertyInternalDynamic<T, TU>(string propertyName)
{
DynamicMethod dynamicMethod =
new DynamicMethod("MyGetPropertyDynamicMethod", typeof(TU), new[] { typeof(T) }, typeof(T), true);
ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Callvirt, typeof(T).GetProperty(propertyName, Flag)!.GetGetMethod(true)!);
ilGenerator.Emit(OpCodes.Ret);
return (Func<T, TU>)dynamicMethod.CreateDelegate(typeof(Func<T, TU>));
}
public static Action<T, TU> SetPropertyInternalDynamic<T, TU>(string propertyName)
{
DynamicMethod dynamicMethod =
new DynamicMethod("MySetPropertyDynamicMethod", typeof(void), new[] { typeof(T), typeof(TU) }, typeof(T), true);
ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Callvirt, typeof(T).GetProperty(propertyName, Flag)!.GetSetMethod(true)!);
ilGenerator.Emit(OpCodes.Ret);
return (Action<T, TU>)dynamicMethod.CreateDelegate(typeof(Action<T, TU>));
}
public static Func<T, TU> GetFieldInternalDynamic<T, TU>(string fieldName)
{
DynamicMethod dynamicMethod =
new DynamicMethod("MyGetFieldDynamicMethod", typeof(TU), new[] { typeof(T) }, typeof(T), true);
ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldfld, typeof(T).GetField(fieldName, Flag)!);
ilGenerator.Emit(OpCodes.Ret);
return (Func<T, TU>)dynamicMethod.CreateDelegate(typeof(Func<T, TU>));
}
public static Action<T, TU> SetFieldInternalDynamic<T, TU>(string fieldName)
{
DynamicMethod dynamicMethod =
new DynamicMethod("MySetFieldDynamicMethod", typeof(void), new[] { typeof(T), typeof(TU) }, typeof(T), true);
ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Stfld, typeof(T).GetField(fieldName, Flag)!);
ilGenerator.Emit(OpCodes.Ret);
return (Action<T, TU>)dynamicMethod.CreateDelegate(typeof(Action<T, TU>));
}
}
[Config(typeof(AntiVirusFriendlyConfig))]
[MemoryDiagnoser]
public class BenchmarkTest
{
private static readonly Test Test = new() { T = "S", X = EnumTest.B };
public static readonly Func<Test, EnumTest> GetPropertyInternal
= Program.GetPropertyInternal<Test, EnumTest>("X");
public static readonly Action<Test, EnumTest> SetPropertyInternal
= Program.SetPropertyInternal<Test, EnumTest>("X");
public static readonly Func<Test, EnumTest> GetPropertyInternalDynamic
= Program.GetPropertyInternalDynamic<Test, EnumTest>("X");
public static readonly Action<Test, EnumTest> SetPropertyInternalDynamic
= Program.SetPropertyInternalDynamic<Test, EnumTest>("X");
public static readonly BindingFlags Flag
= BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Static;
private static readonly PropertyInfo Property = typeof(Test).GetProperty("X", Flag)!;
public static readonly Func<Test, EnumTest> GetMethod
= Property.GetGetMethod(true)!.CreateDelegate<Func<Test, EnumTest>>();
public static readonly Action<Test, EnumTest> SetMethod
= Property.GetSetMethod(true)!.CreateDelegate<Action<Test, EnumTest>>();
[Benchmark]
public EnumTest GetPropertyValue() => GetPropertyInternal(Test);
[Benchmark]
public void SetPropertyValue() => SetPropertyInternal(Test, EnumTest.A);
[Benchmark]
public EnumTest GetPropertyValueDynamic() => GetPropertyInternalDynamic(Test);
[Benchmark]
public void SetPropertyValueDynamic() => SetPropertyInternalDynamic(Test, EnumTest.A);
[Benchmark]
public EnumTest GetPropertyValueDelegate() => GetMethod(Test);
[Benchmark]
public void SetPropertyValueDelegate() => SetMethod(Test, EnumTest.A);
[Benchmark]
public EnumTest GetPropertyValueReflection() => (EnumTest)Property.GetValue(Test)!;
[Benchmark]
public void SetPropertyValueReflection() => Property.SetValue(Test, EnumTest.A);
}
public class Test
{
internal string T { get; set; }
internal EnumTest X { get; set; }
private string Y { get; set; }
}
public enum EnumTest : long
{
A = 1,
B = 2,
C = 3
}
public class AntiVirusFriendlyConfig : ManualConfig
{
public AntiVirusFriendlyConfig()
{
AddJob(Job.MediumRun.WithToolchain(InProcessNoEmitToolchain.Instance));
}
}
|