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List: kde-frameworks-devel
Subject: Review Request 123731: Cleanup handling of notifications closing
From: "Martin Klapetek" <martin.klapetek () gmail ! com>
Date: 2015-05-12 11:59:50
Message-ID: 20150512115950.8613.52550 () mimi ! kde ! org
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This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/123731/
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Review request for KDE Frameworks.
Repository: knotifications
Description
-------
While investigating the cause of crash of https://bugs.kde.org/show_bug.cgi?id=342752 \
I've come across some loose ends in how KNotifications is handling closing of \
notifications.
As for the crash itself, I never managed to reproduce even with special written test \
cases, but what happens (or seem to) is this:
* KNotification object gets deleted
* The destructor calls close() on all plugins
* The NotifyByPopup plugin does async dbus call to close the notification and \
returns
* KNotification's dpointer is deleted
* The DBus reply returns, calling NotifyByPopup::finished()
* Now for some reason the KNotification object is still not null but its dpointer is \
gone, so the check "if (!notification || \
d->notifications.contains(notification->id()))" crashes on the notification->id() \
call
So I've made it simply return -1 when dpointer is null, which should ideally prevent \
the crashes
Diffs
-----
src/knotification.cpp 01962b3
src/knotificationmanager.cpp 0d9b3b0
src/knotificationmanager_p.h f8e7df8
src/notifybypopup.cpp 2f84ab0
Diff: https://git.reviewboard.kde.org/r/123731/diff/
Testing
-------
Thanks,
Martin Klapetek
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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/123731/">https://git.reviewboard.kde.org/r/123731/</a>
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<div>Review request for KDE Frameworks.</div>
<div>By Martin Klapetek.</div>
<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt;">Repository: </b>
knotifications
</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">While investigating the cause of crash of \
https://bugs.kde.org/show_bug.cgi?id=342752 I've come across some loose ends in \
how KNotifications is handling closing of notifications.
As for the crash itself, I never managed to reproduce even with special written test \
cases, but what happens (or seem to) is this:
* KNotification object gets deleted
* The destructor calls close() on all plugins
* The NotifyByPopup plugin does async dbus call to close the notification and \
returns
* KNotification's dpointer is deleted
* The DBus reply returns, calling NotifyByPopup::finished()
* Now for some reason the KNotification object is still not null but its dpointer is \
gone, so the check "if (!notification || \
d->notifications.contains(notification->id()))" crashes on the \
notification->id() call
So I've made it simply return -1 when dpointer is null, which should ideally \
prevent the crashes</pre> </td>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>src/knotification.cpp <span style="color: grey">(01962b3)</span></li>
<li>src/knotificationmanager.cpp <span style="color: grey">(0d9b3b0)</span></li>
<li>src/knotificationmanager_p.h <span style="color: grey">(f8e7df8)</span></li>
<li>src/notifybypopup.cpp <span style="color: grey">(2f84ab0)</span></li>
</ul>
<p><a href="https://git.reviewboard.kde.org/r/123731/diff/" style="margin-left: \
3em;">View Diff</a></p>
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