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Code Issues Releases Wiki Activity

Use pooled memory for memory copies performed by ZipArchiveReader

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This commit is contained in:
Dean Herbert 2022-05-30 17:42:27 +09:00
parent 98fe0cf3d5
commit 82a1ba1d46
2 changed files with 51 additions and 6 deletions
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56
osu.Game/IO/Archives/ZipArchiveReader.cs
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@ -1,11 +1,15 @@
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System.Buffers;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Microsoft.Toolkit.HighPerformance;
using osu.Framework.Extensions;
using osu.Framework.IO.Stores;
using SharpCompress.Archives.Zip;
using SixLabors.ImageSharp.Memory;
namespace osu.Game.IO.Archives
{
@ -27,15 +31,12 @@ namespace osu.Game.IO.Archives
if (entry == null)
throw new FileNotFoundException();
// allow seeking
MemoryStream copy = new MemoryStream();
var owner = MemoryAllocator.Default.Allocate<byte>((int)entry.Size);
using (Stream s = entry.OpenEntryStream())
s.CopyTo(copy);
s.ReadToFill(owner.Memory.Span);
copy.Position = 0;
return copy;
return new MemoryOwnerMemoryStream(owner);
}
public override void Dispose()
@ -45,5 +46,48 @@ namespace osu.Game.IO.Archives
}
public override IEnumerable<string> Filenames => archive.Entries.Select(e => e.Key).ExcludeSystemFileNames();
private class MemoryOwnerMemoryStream : Stream
{
private readonly IMemoryOwner<byte> owner;
private readonly Stream stream;
public MemoryOwnerMemoryStream(IMemoryOwner<byte> owner)
{
this.owner = owner;
stream = owner.Memory.AsStream();
}
protected override void Dispose(bool disposing)
{
owner?.Dispose();
base.Dispose(disposing);
}
public override void Flush() => stream.Flush();
public override int Read(byte[] buffer, int offset, int count) => stream.Read(buffer, offset, count);
public override long Seek(long offset, SeekOrigin origin) => stream.Seek(offset, origin);
public override void SetLength(long value) => stream.SetLength(value);
public override void Write(byte[] buffer, int offset, int count) => stream.Write(buffer, offset, count);
public override bool CanRead => stream.CanRead;
public override bool CanSeek => stream.CanSeek;
public override bool CanWrite => stream.CanWrite;
public override long Length => stream.Length;
public override long Position
{
get => stream.Position;
set => stream.Position = value;
}
}
}
}

1
osu.Game/osu.Game.csproj
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@ -29,6 +29,7 @@
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="5.0.14" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="5.0.14" />
<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
<PackageReference Include="Microsoft.Toolkit.HighPerformance" Version="7.1.2" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
<PackageReference Include="ppy.LocalisationAnalyser" Version="2022.417.0">
<PrivateAssets>all</PrivateAssets>