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Improve performance of Tar library #74281

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Merged
carlossanlop merged 21 commits into from
Aug 21, 2022
Merged

Improve performance of Tar library #74281

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d52d836
Avoid unnecessary byte[] allocations
stephentoub Aug 19, 2022
1e5020e
Remove unnecessary use of FileStreamOptions
stephentoub Aug 19, 2022
6938c77
Clean up Dispose{Async} implementations
stephentoub Aug 19, 2022
5fa03e9
Clean up unnecessary consts
stephentoub Aug 19, 2022
8dd0ac1
Remove MemoryStream/Encoding.UTF8.GetBytes allocations, unnecessary a…
stephentoub Aug 19, 2022
5be57ad
Avoid string allocations in ReadMagicAttribute
stephentoub Aug 19, 2022
ab71e6c
Avoid allocation in WriteAsOctal
stephentoub Aug 19, 2022
df2d742
Improve handling of octal
stephentoub Aug 19, 2022
c6058bd
Avoid allocation for version string
stephentoub Aug 19, 2022
5756a8c
Removing boxing and char string allocation in GenerateExtendedAttribu…
stephentoub Aug 19, 2022
9539a4a
Fix a couple unnecessary dictionary lookups
stephentoub Aug 19, 2022
74bbc9c
Replace Enum.HasFlag usage
stephentoub Aug 19, 2022
46e0855
Remove allocations from Write{Posix}Name
stephentoub Aug 19, 2022
02ca7da
Replace ArrayPool use with string.Create
stephentoub Aug 19, 2022
f9eb99f
Replace more superfluous ArrayPool usage
stephentoub Aug 19, 2022
add6179
Remove ArrayPool use from System.IO.Compression.ZipFile
stephentoub Aug 20, 2022
6f8cb75
Fix inverted condition
stephentoub Aug 20, 2022
827a588
Use generic math to parse octal
stephentoub Aug 20, 2022
ae21478
Remove allocations from StringReader and string.Split
stephentoub Aug 20, 2022
d6b6727
Remove magic string allocation for Ustar when not V7
stephentoub Aug 20, 2022
480af5c
Remove file name and directory name allocation in GenerateExtendedAtt…
stephentoub Aug 20, 2022
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Fix inverted condition
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@stephentoub
stephentoub committed Aug 20, 2022
commit 6f8cb75d054d702722eac63de2ad2920d2228c26
4 changes: 2 additions & 2 deletions src/libraries/System.Formats.Tar/src/System/Formats/Tar/TarHeader.Write.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -780,8 +780,8 @@ private string GenerateExtendedAttributeName()
fileName = string.IsNullOrEmpty(fileName) ? "." : fileName;

return _typeFlag is TarEntryType.Directory or TarEntryType.DirectoryList ?
$"{dirName}/PaxHeaders.{Environment.ProcessId}/{fileName}" :
$"{dirName}/PaxHeaders.{Environment.ProcessId}/{fileName}{Path.DirectorySeparatorChar}";
$"{dirName}/PaxHeaders.{Environment.ProcessId}/{fileName}{Path.DirectorySeparatorChar}" :
$"{dirName}/PaxHeaders.{Environment.ProcessId}/{fileName}";
}

// Gets the special name for the 'name' field in a global extended attribute entry.
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