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using System;
using System.Buffers.Binary;
using BenchmarkDotNet.Attributes;
using Impostor.Benchmarks.Data;
using Impostor.Benchmarks.Data.Pool;
using Impostor.Benchmarks.Extensions;
using Impostor.Hazel;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.ObjectPool;
using MessageWriter = Impostor.Benchmarks.Data.MessageWriter;
namespace Impostor.Benchmarks.Tests
{
public class MessageReaderBenchmark
{
private byte[] _data;
private ObjectPool<MessageReader_Bytes_Pooled_Improved> _pool;
[GlobalSetup]
public void Setup()
{
var message = new MessageWriter(1024);
message.StartMessage(1);
message.Write((ushort)3100);
message.Write((byte)100);
message.Write((int) int.MaxValue);
message.WritePacked(int.MaxValue);
message.EndMessage();
_data = message.ToByteArray(true);
MessageReader_Bytes_Pooled.Return(MessageReader_Bytes_Pooled.Get(_data));
// Services
var services = new ServiceCollection();
services.AddSingleton<ObjectPoolProvider>(new DefaultObjectPoolProvider());
services.AddSingleton(serviceProvider =>
{
var provider = serviceProvider.GetRequiredService<ObjectPoolProvider>();
var policy = new MessageReader_Bytes_Pooled_ImprovedPolicy(serviceProvider);
return provider.Create(policy);
});
_pool = services
.BuildServiceProvider()
.GetRequiredService<ObjectPool<MessageReader_Bytes_Pooled_Improved>>();
}
[Benchmark]
public void Span_Run_1_000_000()
{
for (var i = 0; i < 1_000_000; i++)
{
var span = _data.AsSpan();
var inner = span.ReadMessage();
_ = BinaryPrimitives.ReadUInt16LittleEndian(inner);
_ = inner[2];
_ = BinaryPrimitives.ReadInt32LittleEndian(inner.Slice(3));
}
}
// [Benchmark]
// public void Normal_Run_1_000_000()
// {
// for (var i = 0; i < 1_000_000; i++)
// {
// var reader = new MessageReader(_data);
// var inner = reader.ReadMessage();
//
// _ = inner.ReadUInt16();
// _ = inner.ReadByte();
// _ = inner.ReadInt32();
// // inner.ReadPackedInt32();
// }
// }
[Benchmark]
public void Bytes_Run_1_000_000()
{
for (var i = 0; i < 1_000_000; i++)
{
var reader = new MessageReader_Bytes(_data);
var inner = reader.ReadMessage();
_ = inner.ReadUInt16();
_ = inner.ReadByte();
_ = inner.ReadInt32();
// inner.ReadPackedInt32();
}
}
[Benchmark]
public void Pooled_Bytes_Run_1_000_000()
{
for (var i = 0; i < 1_000_000; i++)
{
var reader = MessageReader_Bytes_Pooled.Get(_data);
var inner = reader.ReadMessage();
_ = inner.ReadUInt16();
_ = inner.ReadByte();
_ = inner.ReadInt32();
// inner.ReadPackedInt32();
MessageReader_Bytes_Pooled.Return(inner);
MessageReader_Bytes_Pooled.Return(reader);
}
}
[Benchmark]
public void Improved_Pooled_Bytes_Run_1_000_000()
{
using (var reader = _pool.Get())
{
for (var i = 0; i < 1_000_000; i++)
{
reader.Update(_data);
using (var inner = reader.ReadMessage())
{
_ = inner.ReadUInt16();
_ = inner.ReadByte();
_ = inner.ReadInt32();
}
}
}
}
}
}
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