[Webkit-unassigned] [Bug 106140] [Qt] Major performance improvement in Qt's PluginDatabase implementation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106140





--- Comment #16 from Csaba Osztrogonac <ossy at webkit.org>  2013-01-09 06:57:22 PST ---
Tests pass if you run only one, but many of them crash if you run all plugins
directory. I tried r138944 in debug mode and I got crash after the 4. plugins
test:

LayoutTests/platform/qt/plugins/qt-qwidget-plugin.html
LayoutTests/plugins/access-after-page-destroyed.html
LayoutTests/plugins/attach-during-destroy.html
LayoutTests/plugins/change-widget-and-click-crash.html

And here is the GDB bactracke with all necessary information:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff4545d98 in WebCore::PluginPackage::freeLibraryTimerFired (this=0x6a44a0) at /home/oszi/WebKit/Source/WebCore/plugins/PluginPackage.cpp:70
70          ASSERT(!m_loadCount);
(gdb) bt
#0  0x00007ffff4545d98 in WebCore::PluginPackage::freeLibraryTimerFired (this=0x6a44a0) at /home/oszi/WebKit/Source/WebCore/plugins/PluginPackage.cpp:70
#1  0x00007ffff4547256 in WebCore::Timer<WebCore::PluginPackage>::fired (this=0x6a4790) at /home/oszi/WebKit/Source/WebCore/platform/Timer.h:106
#2  0x00007ffff4531fe9 in WebCore::ThreadTimers::sharedTimerFiredInternal (this=0x6bbbd0) at /home/oszi/WebKit/Source/WebCore/platform/ThreadTimers.cpp:116
#3  0x00007ffff4531f13 in WebCore::ThreadTimers::sharedTimerFired () at /home/oszi/WebKit/Source/WebCore/platform/ThreadTimers.cpp:93
#4  0x00007ffff488fd80 in WebCore::SharedTimerQt::timerEvent (this=0x6bbc00, ev=0x7fffffffdd50) at /home/oszi/WebKit/Source/WebCore/platform/qt/SharedTimerQt.cpp:113
#5  0x00007fffe8d49439 in QObject::event(QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#6  0x00007fffea3db8cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5
#7  0x00007fffea3e1beb in QApplication::notify(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5
#8  0x00007fffe8d24c04 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#9  0x00007fffe8d700f2 in QTimerInfoList::activateTimers() () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#10 0x00007fffe8d70b5d in ?? () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#11 0x00007fffec1ee6f2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#12 0x00007fffec1f2568 in ?? () from /lib/libglib-2.0.so.0
#13 0x00007fffec1f271c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#14 0x00007fffe8d7081b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#15 0x00007fffe8d23e4b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#16 0x00007fffe8d29e4d in QCoreApplication::exec() () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#17 0x0000000000431d54 in main (argc=2, argv=0x7fffffffe3b8) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeMain.cpp:203

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