Review Request 128890: Make e.g. Baloo::Query thread safe.

[Kai Uwe Broulik]

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src/engine/database.h (line 60)
<https://git.reviewboard.kde.org/r/128890/#comment66719>

    @param


- Kai Uwe Broulik


On Sept. 11, 2016, 6:27 nachm., Christoph Cullmann wrote:
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> https://git.reviewboard.kde.org/r/128890/
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> (Updated Sept. 11, 2016, 6:27 nachm.)
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> Review request for KDE Frameworks, Plasma and Boudhayan Gupta.
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> Repository: baloo
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> Description
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> lmdb itself is thread safe (e.g. you can use the same env in multiple threads).
> Unfortunately, the Baloo::Database itself not, as open() might race against other open calls (we have one unique db object in baloo).
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> => add non-recursive mutex (recursive mutex not needed, one just must avoid to call isOpen() or path() inside open, that is done, else no unit test works).
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> Diffs
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>   src/engine/database.h e3bb175 
>   src/engine/database.cpp ec7ae2e 
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> Diff: https://git.reviewboard.kde.org/r/128890/diff/
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> Testing
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> Unit tests still work.
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> Thanks,
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> Christoph Cullmann
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