Review Request 118167: Flush xcb connection after preparing KSelectionOwner::claim
Martin Gräßlin
mgraesslin at kde.org
Mon May 19 06:03:14 UTC 2014
> On May 16, 2014, 3:38 p.m., Thomas Lübking wrote:
> > a) main.cpp, void Application::start()
> > - Xcb::sync();
> > owner->claim(m_replace, true);
> > + Xcb::sync();
> > Sufficient? (though it warns about a QPA crash "later")
> >
> > b) Qt bug (should flush once per eventcycle) or feature (keeps dirty flag and only flushes on internal need)? -> can such flag be set explicitly?
>
> Martin Gräßlin wrote:
> concerning a): no, as it could hit other applications, too.
>
> b) I'm not sure whether that's in the scope of Qt. If one goes down towards the lower level one needs to take care of it.
>
> Thomas Lübking wrote:
> What I meant is: if this is indeed just a bug in Qt, it's probably pointless to fix it here.
> If it's a feature (and we've no access to it) it's oc. our duty to make unportable things work.
>
> Martin Gräßlin wrote:
> right, I thought about it and yes an xcb_flush() before going to sleep could make a few things easier. I'll see whether I can hack Qt for that next week.
investigation result from looking at Qt - not a solution. Qt uses a thread to poll the xcb connection socket, so we cannot flush before it's going to block again.
- Martin
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This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/118167/#review58061
-----------------------------------------------------------
On May 16, 2014, 3 p.m., Martin Gräßlin wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/118167/
> -----------------------------------------------------------
>
> (Updated May 16, 2014, 3 p.m.)
>
>
> Review request for KDE Frameworks and kwin.
>
>
> Bugs: 334858
> https://bugs.kde.org/show_bug.cgi?id=334858
>
>
> Repository: kwindowsystem
>
>
> Description
> -------
>
> Flush xcb connection after preparing KSelectionOwner::claim
>
> Without the flush nothing starts. This caused KWin to stall during a
> restart.
>
> BUG: 334858
>
>
> Diffs
> -----
>
> src/kselectionowner.cpp 90a0004046135e7fee61fe2ef865b75eb421ea99
>
> Diff: https://git.reviewboard.kde.org/r/118167/diff/
>
>
> Testing
> -------
>
>
> Thanks,
>
> Martin Gräßlin
>
>
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