tests/src/performance/perflab/BlockCopyPerf.cs


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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using Microsoft.Xunit.Performance;
using System;
using Xunit;

public class BlockCopyPerf
{
    [Benchmark(InnerIterationCount=1000000)]
    [InlineData(0)]
    [InlineData(10)]
    [InlineData(100)]
    [InlineData(1000)]
    public static void CallBlockCopy(int numElements)
    {
        byte[] bytes = new byte[numElements * 2];
        Buffer.BlockCopy(bytes, 0, bytes, numElements, numElements);

        foreach (var iteration in Benchmark.Iterations)
            using (iteration.StartMeasurement())
                for(int i=0; i<Benchmark.InnerIterationCount; i++)
                    Buffer.BlockCopy(bytes, 0, bytes, numElements, numElements);
    }
}