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Code Issues Releases Wiki Activity

Performance improvements

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This commit is contained in:
JKorf
2024-03-21 16:46:17 +01:00
parent db9fba4cf2
commit e86713e949
11 changed files with 80 additions and 24 deletions
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CryptoExchange.Net/Converters/JsonNet/JsonNetMessageAccessor.cs
+26 -8
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@@ -7,7 +7,9 @@ using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace CryptoExchange.Net.Converters.JsonNet
{
@@ -222,26 +224,32 @@ namespace CryptoExchange.Net.Converters.JsonNet
public override bool OriginalDataAvailable => _stream?.CanSeek == true;
/// <inheritdoc />
public bool Read(Stream stream, bool bufferStream)
public async Task<bool> Read(Stream stream, bool bufferStream)
{
if (bufferStream && stream is not MemoryStream)
{
// We need to be buffer the stream, and it's not currently a seekable stream, so copy it to a new memory stream
_stream = new MemoryStream();
stream.CopyTo(_stream);
_stream.Position = 0;
}
else
else if (bufferStream)
{
// We need to buffer the stream, and the current stream is seekable, store as is
_stream = stream;
}
else
{
// We don't need to buffer the stream, so don't bother keeping the reference
}
var length = _stream.CanSeek ? _stream.Length : 4096;
using var reader = new StreamReader(_stream, Encoding.UTF8, false, (int)Math.Max(2, length), true);
var length = stream.CanSeek ? stream.Length : 4096;
using var reader = new StreamReader(stream, Encoding.UTF8, false, (int)Math.Max(2, length), true);
using var jsonTextReader = new JsonTextReader(reader);
try
{
_token = JToken.Load(jsonTextReader);
_token = await JToken.LoadAsync(jsonTextReader).ConfigureAwait(false);
IsJson = true;
}
catch (Exception)
@@ -284,8 +292,12 @@ namespace CryptoExchange.Net.Converters.JsonNet
public bool Read(ReadOnlyMemory<byte> data)
{
_bytes = data;
using var stream = new MemoryStream(data.ToArray());
using var reader = new StreamReader(stream, Encoding.UTF8, false, (int)Math.Max(2, data.Length), true);
// Try getting the underlying byte[] instead of the ToArray to prevent creating a copy
using var stream = MemoryMarshal.TryGetArray(data, out var arraySegment)
? new MemoryStream(arraySegment.Array, arraySegment.Offset, arraySegment.Count)
: new MemoryStream(data.ToArray());
using var reader = new StreamReader(stream, Encoding.UTF8, false, Math.Max(2, data.Length), true);
using var jsonTextReader = new JsonTextReader(reader);
try
@@ -303,7 +315,13 @@ namespace CryptoExchange.Net.Converters.JsonNet
}
/// <inheritdoc />
public override string GetOriginalString() => Encoding.UTF8.GetString(_bytes.ToArray());
public override string GetOriginalString() =>
// Netstandard 2.0 doesn't support GetString from a ReadonlySpan<byte>, so use ToArray there instead
#if NETSTANDARD2_0
Encoding.UTF8.GetString(_bytes.ToArray());
#else
Encoding.UTF8.GetString(_bytes.Span);
#endif
/// <inheritdoc />
public override bool OriginalDataAvailable => true;