[Digikam-devel] [Bug 289330] Album file watch failing (QKqueueFileSystemWatcherEngine:addPaths: open: Too many open files in system) [patch]

Marcel Wiesweg marcel.wiesweg at gmx.de
Wed Dec 28 10:26:09 GMT 2011


https://bugs.kde.org/show_bug.cgi?id=289330





--- Comment #5 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-12-28 10:26:08 ---
According to API docs, Qt would be using FSEvents on Mac OS X >= 10.5:
http://en.wikipedia.org/wiki/FSEvents

http://developer.qt.nokia.com/doc/qt-4.8/qfilesystemwatcher.html
"Mac OS X 10.5 and up use a different backend and do not suffer from this
issue."

Now looking into the source code of Qt 4.7.3, apparently the creation of the
FSEvents backend is commented out
(QFileSystemWatcherPrivate::createNativeEngine()). This is still true on Qt
master on gitorious. So apparently the API docs are wrong here - the backend
does not seem to be used. I would recommend to report this bug to Qt, or try to
reopen the bug report mentioned above.

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