62 lines
1.7 KiB
C#
62 lines
1.7 KiB
C#
// Licensed to Timothy Schenk under the GNU AGPL Version 3 License.
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using System.Buffers.Binary;
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using System.Security.Cryptography;
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using BenchmarkDotNet.Attributes;
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using BenchmarkDotNet.Order;
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namespace Benchmarks;
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[Orderer(SummaryOrderPolicy.FastestToSlowest)]
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[Config(typeof(GenericConfig))]
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public class BinaryConversionBenchmarks {
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private byte[] _data = null!;
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private int _offset;
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private int _writeBuffer;
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[GlobalSetup]
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public void Setup() {
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_data = RandomNumberGenerator.GetBytes(4000);
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_offset = RandomNumberGenerator.GetInt32(0, 3500);
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_writeBuffer = RandomNumberGenerator.GetInt32(int.MinValue, int.MaxValue);
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}
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[Benchmark]
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public short BitConverterParseTest() {
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return BitConverter.ToInt16(_data, _offset);
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}
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[Benchmark]
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public short BinaryReader() {
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using var ms = new MemoryStream(_data);
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using var reader = new BinaryReader(ms);
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reader.BaseStream.Position = _offset;
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return reader.ReadInt16();
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}
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[Benchmark]
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public short BinaryPrimitivesRead() {
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return BinaryPrimitives.ReadInt16LittleEndian(
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new ArraySegment<byte>(_data, _offset, sizeof(short)));
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}
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[Benchmark]
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public void BinaryPrimitivesWrite() {
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BinaryPrimitives.WriteInt32LittleEndian(_data.AsSpan(_offset, 4),
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_writeBuffer);
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}
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[Benchmark]
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public void BitConverterCopy() {
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BitConverter.GetBytes(_writeBuffer).CopyTo(_data, _offset);
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}
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[Benchmark]
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public void BitConverterAssignment() {
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var bytes = BitConverter.GetBytes(_writeBuffer);
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_data[_offset] = bytes[0];
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_data[_offset + 1] = bytes[1];
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_data[_offset + 2] = bytes[2];
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_data[_offset + 3] = bytes[3];
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}
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}
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