Review Request 118869: Use QElapsedTimer for data engines

[Christoph Feck]

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https://git.reviewboard.kde.org/r/118869/
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Review request for Plasma and Aaron J. Seigo.


Bugs: 336551
    http://bugs.kde.org/show_bug.cgi?id=336551


Repository: kdelibs


Description
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As described in bug 336551, plasma data engines use QTime to find out about elapsed time. The problem is that QTime handles time zones, and therefore reads /etc/localtime on each call.

Instead, it should use QElapsedTimer. This fixes both the performance issue, as well as the FIXME from the comment about not handled 24-h wraps and timezone changes.

There are probably more places where this can be changed.


Diffs
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  plasma/datacontainer.cpp d19b1a5 
  plasma/dataengine.cpp 9612574 
  plasma/private/datacontainer_p.h a3e1f00 
  plasma/private/dataengine_p.h 74a61e2 

Diff: https://git.reviewboard.kde.org/r/118869/diff/


Testing
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Thanks,

Christoph Feck

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