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Added sample project for Static Abstract Interface Members. (#970)
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,159 @@ | ||
| // --------------------------------------------------------------------------------------- | ||
| // ILGPU Samples | ||
| // Copyright (c) 2023 ILGPU Project | ||
| // www.ilgpu.net | ||
| // | ||
| // File: Program.cs | ||
| // | ||
| // This file is part of ILGPU and is distributed under the University of Illinois Open | ||
| // Source License. See LICENSE.txt for details. | ||
| // --------------------------------------------------------------------------------------- | ||
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| using ILGPU; | ||
| using ILGPU.Runtime; | ||
| using System; | ||
| using System.Linq; | ||
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| namespace StaticAbstractInterfaceMembers | ||
| { | ||
| class Program | ||
| { | ||
| // .NET 7 introduced Static Abstract Interface Members. These can either be used | ||
| // by themselves, or combined with Generic Math, to provide the ability to write | ||
| // generic kernels with different implementations for some functionality. | ||
| // | ||
| // Before .NET 7, a more restricted option is to use a struct that implements | ||
| // the generic interface. | ||
| // | ||
| #if NET7_0_OR_GREATER | ||
| public interface ICalculatorOperation<T> | ||
| where T : System.Numerics.INumber<T> | ||
| { | ||
| static abstract T Calculate(T left, T right); | ||
| } | ||
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| // Interface can be implemented by a 'class' or 'struct'. | ||
| [System.Diagnostics.CodeAnalysis.SuppressMessage( | ||
| "Performance", | ||
| "CA1812:Avoid uninstantiated internal classes", | ||
| Justification = "Using static method in ILGPU kernel")] | ||
| public class AdditionOp : ICalculatorOperation<int> | ||
| { | ||
| public static int Calculate(int left, int right) => left + right; | ||
| } | ||
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| // Interface can be implemented by a 'class' or 'struct'. | ||
| public struct MultiplyOp : ICalculatorOperation<float> | ||
| { | ||
| public static float Calculate(float left, float right) => left * right; | ||
| } | ||
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| public static void CalculatorKernel<T, TOp>( | ||
| Index1D index, | ||
| ArrayView1D<T, Stride1D.Dense> input, | ||
| ArrayView1D<T, Stride1D.Dense> output) | ||
| where T : unmanaged, System.Numerics.INumber<T> | ||
| where TOp : ICalculatorOperation<T> | ||
| { | ||
| // Calls the static abstract method on the class or struct. | ||
| output[index] = TOp.Calculate(input[index], input[index]); | ||
| } | ||
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| #else | ||
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| public interface ICalculatorOperation<T> | ||
| where T : unmanaged | ||
| { | ||
| T Calculate(T left, T right); | ||
| } | ||
|
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| // Interface must be implemented by a 'struct'. | ||
| public struct AdditionOp : ICalculatorOperation<int> | ||
| { | ||
| public int Calculate(int left, int right) => left + right; | ||
| } | ||
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| // Interface must be implemented by a 'struct'. | ||
| public struct MultiplyOp : ICalculatorOperation<float> | ||
| { | ||
| public float Calculate(float left, float right) => left * right; | ||
| } | ||
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| public static void CalculatorKernel<T, TOp>( | ||
| Index1D index, | ||
| ArrayView1D<T, Stride1D.Dense> input, | ||
| ArrayView1D<T, Stride1D.Dense> output) | ||
| where T : unmanaged | ||
| where TOp : struct, ICalculatorOperation<T> | ||
| { | ||
| // Creates a new instance of the struct, and calls the method. | ||
| output[index] = default(TOp).Calculate(input[index], input[index]); | ||
| } | ||
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| #endif | ||
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| public static void UsingAbstractFunction<T, TOp>(Accelerator accelerator) | ||
| #if NET7_0_OR_GREATER | ||
| where T : unmanaged, System.Numerics.INumber<T> | ||
| where TOp : ICalculatorOperation<T> | ||
| #else | ||
| where T : unmanaged | ||
| where TOp : struct, ICalculatorOperation<T> | ||
| #endif | ||
| { | ||
| var values = | ||
| Enumerable.Range(0, 16) | ||
| #if NET7_0_OR_GREATER | ||
| .Select(x => T.CreateChecked(x)) | ||
| #else | ||
| .Select(x => (T)Convert.ChangeType( | ||
| x, | ||
| typeof(T), | ||
| System.Globalization.CultureInfo.InvariantCulture)) | ||
| #endif | ||
| .ToArray(); | ||
| using var inputBuffer = accelerator.Allocate1D(values); | ||
| using var outputBuffer = accelerator.Allocate1D(values); | ||
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| outputBuffer.MemSetToZero(); | ||
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| var kernel = accelerator.LoadAutoGroupedStreamKernel< | ||
| Index1D, | ||
| ArrayView1D<T, Stride1D.Dense>, | ||
| ArrayView1D<T, Stride1D.Dense>>( | ||
| CalculatorKernel<T, TOp>); | ||
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| kernel( | ||
| (int)inputBuffer.Length, | ||
| inputBuffer.View, | ||
| outputBuffer.View); | ||
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| accelerator.Synchronize(); | ||
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| var result = outputBuffer.GetAsArray1D(); | ||
| for (var i = 0; i < result.Length; i++) | ||
| Console.WriteLine($"[{i}] = {result[i]}"); | ||
| Console.WriteLine(); | ||
| } | ||
|
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| /// <summary> | ||
| /// Demonstrates static abstract members in interfaces. | ||
| /// </summary> | ||
| static void Main() | ||
| { | ||
| // Create main context | ||
| using var context = Context.CreateDefault(); | ||
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| // For each available device... | ||
| foreach (var device in context) | ||
| { | ||
| // Create accelerator for the given device | ||
| using var accelerator = device.CreateAccelerator(context); | ||
| Console.WriteLine($"Performing operations on {accelerator}"); | ||
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| UsingAbstractFunction<int, AdditionOp>(accelerator); | ||
| UsingAbstractFunction<float, MultiplyOp>(accelerator); | ||
| } | ||
| } | ||
| } | ||
| } |
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Samples/StaticAbstractInterfaceMembers/StaticAbstractInterfaceMembers.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
| <PropertyGroup> | ||
| <TargetFrameworks>$(LibrarySamplesTargetFrameworks)</TargetFrameworks> | ||
| <OutputType>Exe</OutputType> | ||
| <LangVersion>11.0</LangVersion> | ||
| </PropertyGroup> | ||
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| <PropertyGroup> | ||
| <EnableNETAnalyzers>true</EnableNETAnalyzers> | ||
| <AnalysisMode>AllEnabledByDefault</AnalysisMode> | ||
| </PropertyGroup> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="..\..\Src\ILGPU\ILGPU.csproj" /> | ||
| </ItemGroup> | ||
| </Project> |