[prev in list] [next in list] [prev in thread] [next in thread]
List: kde-panel-devel
Subject: Re: Review Request 123494: Create DesktopView before connecting signals from the activity consumer
From: "Bhushan Shah" <bhush94 () gmail ! com>
Date: 2015-04-25 14:09:24
Message-ID: 20150425140924.6982.80716 () mimi ! kde ! org
[Download RAW message or body]
--===============2310056833087123252==
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/123494/
-----------------------------------------------------------
(Updated April 25, 2015, 2:09 p.m.)
Status
------
This change has been marked as submitted.
Review request for Plasma, Ivan Čukić and Marco Martin.
Changes
-------
Submitted with commit 317421fd23eabd17d84320a31552c40ccd45a778 by Bhushan \
Shah to branch master.
Repository: plasma-workspace
Description
-------
This avoids the crash situation where something have created the activity \
consumer earlier and currentActivityChanged signal is emitted before view \
is created.
```
#0 PlasmaQuick::View::setContainment (this=0x0, cont=0x16a9fc0) at \
/home/bshah/aur/plasma-framework-git/src/plasma-framework/src/plasmaquick/view.cpp:243
#1 0x0000000000462097 in StandaloneAppCorona::currentActivityChanged \
(this=0x7772a0, newActivity=...) at \
/home/bshah/aur/plasma-workspace-git/src/plasma-workspace/shell/standaloneappcorona.cpp:192
#2 0x00007ffff32383c9 in QMetaObject::activate(QObject*, int, int, \
void**) () from /usr/lib/libQt5Core.so.5 #3 0x00007ffff71f9763 in \
KActivities::Consumer::currentActivityChanged (this=0x741aa0, _t1=...) at \
/home/bshah/aur/kactivities-git/src/build/src/lib/core/moc_consumer.cpp:216 \
#4 0x00007ffff71f94dd in KActivities::Consumer::qt_static_metacall \
(_o=0x741aa0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffffffa570) \
at /home/bshah/aur/kactivities-git/src/build/src/lib/core/moc_consumer.cpp:103
#5 0x00007ffff32383c9 in QMetaObject::activate(QObject*, int, int, \
void**) () from /usr/lib/libQt5Core.so.5 #6 0x00007ffff71f91d6 in \
KActivities::ActivitiesCache::currentActivityChanged (this=0x77c900, \
_t1=...) at /home/bshah/aur/kactivities-git/src/build/src/lib/core/moc_activitiescache_p.cpp:353
#7 0x00007ffff71ee4f7 in KActivities::ActivitiesCache::setCurrentActivity \
(this=0x77c900, activity=...) at \
/home/bshah/aur/kactivities-git/src/kactivities/src/lib/core/activitiescache_p.cpp:297
```
I hit this crash when creating recent media backend for pmc. First \
backendsmodel is initalized which in turn loads the recentmedia backend and \
hence creates the activity consumer first. Afterwards when signal is \
connected it calls currentActivityChanged slot and fails to set containment \
on null view.
Diffs
-----
shell/standaloneappcorona.cpp efa5c91
Diff: https://git.reviewboard.kde.org/r/123494/diff/
Testing
-------
works fine
Thanks,
Bhushan Shah
--===============2310056833087123252==
MIME-Version: 1.0
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: 8bit
<html>
<body>
<div style="font-family: Verdana, Arial, Helvetica, Sans-Serif;">
<table bgcolor="#f9f3c9" width="100%" cellpadding="12" style="border: \
1px #c9c399 solid; border-radius: 6px; -moz-border-radius: 6px; \
-webkit-border-radius: 6px;"> <tr>
<td>
This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/123494/">https://git.reviewboard.kde.org/r/123494/</a>
</td>
</tr>
</table>
<br />
<table bgcolor="#e0e0e0" width="100%" cellpadding="12" style="border: 1px \
gray solid; border-radius: 6px; -moz-border-radius: 6px; \
-webkit-border-radius: 6px;"> <tr>
<td>
<h1 style="margin: 0; padding: 0; font-size: 10pt;">This change has been \
marked as submitted.</h1> </td>
</tr>
</table>
<br />
<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="12" \
style="border: 1px #888a85 solid; border-radius: 6px; -moz-border-radius: \
6px; -webkit-border-radius: 6px;"> <tr>
<td>
<div>Review request for Plasma, Ivan Čukić and Marco Martin.</div>
<div>By Bhushan Shah.</div>
<p style="color: grey;"><i>Updated April 25, 2015, 2:09 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: \
1.5em;">Changes</h1> <table width="100%" bgcolor="#ffffff" cellspacing="0" \
cellpadding="10" style="border: 1px solid #b8b5a0"> <tr>
<td>
<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;">Submitted with commit 317421fd23eabd17d84320a31552c40ccd45a778 \
by Bhushan Shah to branch master.</pre> </td>
</tr>
</table>
<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt;">Repository: </b>
plasma-workspace
</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description \
</h1> <table width="100%" bgcolor="#ffffff" cellspacing="0" \
cellpadding="10" style="border: 1px solid #b8b5a0"> <tr>
<td>
<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;"><p style="padding: 0;text-rendering: inherit;margin: \
0;line-height: inherit;white-space: inherit;">This avoids the crash \
situation where something have created the activity consumer earlier and \
currentActivityChanged signal is emitted before view is created.</p> <p \
style="padding: 0;text-rendering: inherit;margin: 0;line-height: \
inherit;white-space: inherit;"><div class="codehilite" style="background: \
#f8f8f8"><pre style="line-height: 125%">#0 \
PlasmaQuick::View::setContainment (this=0x0, cont=0x16a9fc0) at \
/home/bshah/aur/plasma-framework-git/src/plasma-framework/src/plasmaquick/view.cpp:243
#1 0x0000000000462097 in StandaloneAppCorona::currentActivityChanged \
(this=0x7772a0, newActivity=...) at \
/home/bshah/aur/plasma-workspace-git/src/plasma-workspace/shell/standaloneappcorona.cpp:192
#2 0x00007ffff32383c9 in QMetaObject::activate(QObject*, int, int, \
void**) () from /usr/lib/libQt5Core.so.5 #3 0x00007ffff71f9763 in \
KActivities::Consumer::currentActivityChanged (this=0x741aa0, _t1=...) at \
/home/bshah/aur/kactivities-git/src/build/src/lib/core/moc_consumer.cpp:216 \
#4 0x00007ffff71f94dd in KActivities::Consumer::qt_static_metacall \
(_o=0x741aa0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffffffa570) \
at /home/bshah/aur/kactivities-git/src/build/src/lib/core/moc_consumer.cpp:103
#5 0x00007ffff32383c9 in QMetaObject::activate(QObject*, int, int, \
void**) () from /usr/lib/libQt5Core.so.5 #6 0x00007ffff71f91d6 in \
KActivities::ActivitiesCache::currentActivityChanged (this=0x77c900, \
_t1=...) at /home/bshah/aur/kactivities-git/src/build/src/lib/core/moc_activitiescache_p.cpp:353
#7 0x00007ffff71ee4f7 in KActivities::ActivitiesCache::setCurrentActivity \
(this=0x77c900, activity=...) at \
/home/bshah/aur/kactivities-git/src/kactivities/src/lib/core/activitiescache_p.cpp:297
</pre></div>
</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: \
inherit;white-space: inherit;">I hit this crash when creating recent media \
backend for pmc. First backendsmodel is initalized which in turn loads the \
recentmedia backend and hence creates the activity consumer first. \
Afterwards when signal is connected it calls currentActivityChanged slot \
and fails to set containment on null view.</p></pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing \
</h1> <table width="100%" bgcolor="#ffffff" cellspacing="0" \
cellpadding="10" style="border: 1px solid #b8b5a0"> <tr>
<td>
<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;"><p style="padding: 0;text-rendering: inherit;margin: \
0;line-height: inherit;white-space: inherit;">works fine</p></pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> \
</h1> <ul style="margin-left: 3em; padding-left: 0;">
<li>shell/standaloneappcorona.cpp <span style="color: \
grey">(efa5c91)</span></li>
</ul>
<p><a href="https://git.reviewboard.kde.org/r/123494/diff/" \
style="margin-left: 3em;">View Diff</a></p>
</td>
</tr>
</table>
</div>
</body>
</html>
--===============2310056833087123252==--
[Attachment #3 (text/plain)]
_______________________________________________
Plasma-devel mailing list
Plasma-devel@kde.org
https://mail.kde.org/mailman/listinfo/plasma-devel
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic