Review Request 127236: Leverage QDir to know what's in a KIconThemeDir
Milian Wolff
mail at milianw.de
Tue Mar 1 13:44:42 UTC 2016
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https://git.reviewboard.kde.org/r/127236/#review92996
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Ship it!
But I like battleship :)
Awesome work Aleix, I actually looked at that hotspot plenty of times but never came up with this elegant version to fix it. Well done!
- Milian Wolff
On March 1, 2016, 3:25 a.m., Aleix Pol Gonzalez wrote:
>
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/127236/
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> (Updated March 1, 2016, 3:25 a.m.)
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>
> Review request for KDE Frameworks and Christoph Feck.
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> Repository: kiconthemes
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> Description
> -------
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> At the moment we're playing Battleship to see if an icon is present in a subdirectory. This means that we are checking on every directory if there's an icon that matches the size with a said name on every request.
>
> This can be seen easily with strace:
> ```
> $ strace kwrite |& grep ENOENT | wc -l
> 6212
> ```
> After the patch:
> ```
> $ strace kwrite |& grep ENOENT | wc -l
> 1993
> ```
> We reduce these accesses to let QDir keep the list of files inside the directory (that was already being generated at some point, it just was being discarded).
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> Diffs
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> src/kicontheme.cpp 0996054
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> Diff: https://git.reviewboard.kde.org/r/127236/diff/
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>
> Testing
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> Builds, tests still pass, applications start noticeably faster.
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>
> Thanks,
>
> Aleix Pol Gonzalez
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>
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