Review Request 122470: Optimize DataSource

[Marco Martin]

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Ship it!


arriving late but that's nice :)

- Marco Martin


On Feb. 16, 2015, 1:57 p.m., Kai Uwe Broulik wrote:
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> https://git.reviewboard.kde.org/r/122470/
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> (Updated Feb. 16, 2015, 1:57 p.m.)
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> Review request for Plasma.
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> Repository: plasma-framework
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> Description
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> This optimizes the DataSource Item.
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> - Use QQmlParserStatus to provide event compression for the setupData() method so it is only called once all the bindings have been setup, it used to be called repeatedly a lot
> - Split setting up the binding outside of setupData, so connections like "connectedSources: sources" work with this new approach (that consumer thing looks like it leaks)
> - Re-introduce interval alignment, this allows the clock to use a 60s interval for polling and align to the minute, need to use int since we cannot pass an enum defined in a different class
> - Cache sources() and emit change signal only when it has actually changed
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> Diffs
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>   src/declarativeimports/core/datasource.h 3aaa2bb 
>   src/declarativeimports/core/datasource.cpp 759e5f4 
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> Diff: https://git.reviewboard.kde.org/r/122470/diff/
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> Testing
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> Battery monitor, which does crazy things to the data source works, media controller works, and the clock is able to align to the minute. Could potentially speed up applet initialization a little.
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> Thanks,
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> Kai Uwe Broulik
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