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  1. Qt
  2. QTBUG-72523

Loading QPixmap from a file in non-gui threads is not safe

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    • 9bbeb7e6e8fb0fdd743b741dce61543fc4246ee2 (qt/qtbase/5.12)

    Description

      Most QPA plugins enable ThreadedPixmap capability and it would seem QPixmap are fine to be used from non-gui threads, however, one of the constructors QPixmap(const QString&, const char *, Qt::ImageConversionFlags) and load() function end up using QPixmapCache which cannot be used from non-gui thread.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-76694 Protect usage of QPixmapCache in QPixmapIconEngine when it is not in the main thread

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          For Gerrit Dashboard: QTBUG-72523
          # Subject Branch Project Status CR V
          248117,3 Prevent QPixmap::load from touching QPixmapCache in non-gui threads 5.12 qt/qtbase Status: MERGED -1 0
          248445,3 QPixmapCache: guard against usage from non-main threads 5.12 qt/qtbase Status: MERGED +2 0

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              vgt Eirik Aavitsland
              poikelin Joni Poikelin
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              Dates

                Created:
                Updated:
                Resolved:

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