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  1. Qt
  2. QTBUG-59760

Calling QEventLoop::exec(ExcludeUserInput) causes a busy loop with 100% CPU usage on glib

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P2: Important P2: Important
    • 5.9
    • 5.6.2, 5.7.1, 5.8.0
    • QPA: X11/XCB
    • None
    • Ubuntu 16.04
      Debian unstable
      CentOs 7

      Starting this simple testproject: https://github.com/apollo13/qt_bug_glib and clicking on the "trigger" button immediately causes 100% cpu usage. If one exports QT_NO_GLIB=1 cpu usage stays down.

      Assigned to QtGui since thiago said that this is not a QtCore issue.

        1. qt_bug_glib-master.zip
          3 kB
        For Gerrit Dashboard: QTBUG-59760
        # Subject Branch Project Status CR V
        190785,7 Prevent busy loop in glib event dispatcher 5.9 qt/qtbase Status: MERGED +2 0

            paeglis Gatis Paeglis
            apollo13 Florian Apolloner
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              Created:
              Updated:
              Resolved:

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