https://bugs.kde.org/show_bug.cgi?id=503362
Bug ID: 503362
Summary: Sometimes whole KDevelop freezes when editing file on
slow disk (because sync on main thread)
Classification: Applications
Product: kdevelop
Version: 6.1.241203
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kdevelop-bugs-n...@kde.org
Reporter: davis...@gmail.com
Target Milestone: ---
SUMMARY
When editing file on slow disk then whole KDevelop freezes/gets stuck
STEPS TO REPRODUCE
1. Edit file on slow disk (maybe try on NFS)
OBSERVED RESULT
Sometimes whole KDevelop freezes
EXPECTED RESULT
Save/sync in another thread not to block UI
SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
This happens because `fdatasync` is invoked in Main Thread.
I noticed 2 separate cases
One when `.kate-swp` file is synced
> fd is file like /mnt/path/.filename.c.kate-swp
> Thread 1 (Thread 0x7ebd7ada66c0 (LWP 336849) "kdevelop"):
> #0 __GI_fdatasync (fd=75) at ../sysdeps/unix/sysv/linux/fdatasync.c:27
> #1 0x00007ebdfffb6cc9 in QtPrivate::QSlotObjectBase::call (this=<optimized
> out>, r=<optimized out>, a=<optimized out>, this=<optimized out>,
> r=<optimized out>, a=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
> #2 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>,
> argv=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4138
> #3 0x00007ebdfffbd8a5 in QMetaObject::activate<void, QTimer::QPrivateSignal>
> (sender=0x5fda75824150, mo=<optimized out>, local_signal_index=0, ret=0x0) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs.h:306
> #4 QTimer::timeout (this=0x5fda75824150, _t1=...) at
> /usr/src/debug/qt6-base/build/src/corelib/Core_autogen/include/moc_qtimer.cpp:182
> #5 QTimer::timerEvent (e=<optimized out>, this=0x5fda75824150) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qtimer.cpp:285
> #6 QTimer::timerEvent (this=0x5fda75824150, e=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qtimer.cpp:279
> #7 0x00007ebdfffa5459 in QObject::event (this=0x5fda75824150,
> e=0x7ffeacb73020) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1406
> #8 0x00007ebe010fed9e in QApplicationPrivate::notify_helper (this=<optimized
> out>, receiver=0x5fda75824150, e=0x7ffeacb73020) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3301
> #9 0x00007ebdfff5a018 in QCoreApplication::notifyInternal2
> (receiver=0x5fda75824150, event=0x7ffeacb73020) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1106
> #10 0x00007ebe000de200 in QCoreApplication::sendEvent (receiver=<optimized
> out>, event=0x7ffeacb73020) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1546
> #11 QTimerInfoList::activateTimers (this=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:426
> #12 0x00007ebe001cfe61 in timerSourceDispatch (source=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:152
> #13 idleTimerSourceDispatch (source=source@entry=0x5fda72c26ab0) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:199
> #14 0x00007ebdfcacd1e4 in g_main_dispatch (context=0x7ebdd4000f00) at
> ../glib/glib/gmain.c:3398
> #15 0x00007ebdfcb30e97 in g_main_context_dispatch_unlocked
> (context=0x7ebdd4000f00) at ../glib/glib/gmain.c:4249
> #16 g_main_context_iterate_unlocked.isra.0
> (context=context@entry=0x7ebdd4000f00, block=block@entry=1,
> dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4314
> #17 0x00007ebdfcacc615 in g_main_context_iteration (context=0x7ebdd4000f00,
> may_block=1) at ../glib/glib/gmain.c:4379
> #18 0x00007ebe001cd59d in QEventDispatcherGlib::processEvents
> (this=0x5fda72b880b0, flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
> #19 0x00007ebdfff65376 in QEventLoop::processEvents (this=0x7ffeacb73300,
> flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
> #20 QEventLoop::exec (this=0x7ffeacb73300, flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
> #21 0x00007ebdfff5d159 in QCoreApplication::exec () at
> /usr/src/debug/qt6-base/qtbase/src/corelib/global/qflags.h:77
> #22 0x00005fda4c22d1f6 in ?? ()
> #23 0x00007ebdff835488 in __libc_start_call_main
> (main=main@entry=0x5fda4c226180, argc=argc@entry=1,
> argv=argv@entry=0x7ffeacb738c8) at ../sysdeps/nptl/libc_start_call_main.h:58
> #24 0x00007ebdff83554c in __libc_start_main_impl (main=0x5fda4c226180,
> argc=1, argv=0x7ffeacb738c8, init=<optimized out>, fini=<optimized out>,
> rtld_fini=<optimized out>, stack_end=0x7ffeacb738b8) at
> ../csu/libc-start.c:360
> #25 0x00005fda4c22dbb5 in ?? ()
And another time
> Thread 1 (Thread 0x7ebd7ada66c0 (LWP 336849) "kdevelop"):
> #0 __GI_fdatasync (fd=18) at ../sysdeps/unix/sysv/linux/fdatasync.c:27
> #1 0x00007ebdfff1b8a6 in QFSFileEnginePrivate::nativeSyncToDisk
> (this=0x5fda844c4530) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/io/qfsfileengine_unix.cpp:163
> #2 QFSFileEngine::syncToDisk (this=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/io/qfsfileengine.cpp:427
> #3 0x00007ebdfff322d2 in QSaveFile::commit (this=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/io/qsavefile.cpp:304
> #4 0x00007ebe00fc2740 in ?? () from /usr/lib/libKF6ConfigCore.so.6
> #5 0x00007ebe00fabb9a in KConfig::sync() () from
> /usr/lib/libKF6ConfigCore.so.6
> #6 0x00007ebe01a370c7 in ?? () from /usr/lib/libKDevPlatformShell.so.61
> #7 0x00007ebe01a3741f in ?? () from /usr/lib/libKDevPlatformShell.so.61
> #8 0x00007ebe01a374ef in ?? () from /usr/lib/libKDevPlatformShell.so.61
> #9 0x00007ebdfffb6cc9 in QtPrivate::QSlotObjectBase::call (this=<optimized
> out>, r=<optimized out>, a=<optimized out>, this=<optimized out>,
> r=<optimized out>, a=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
> #10 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>,
> argv=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4138
> #11 0x00007ebdff6a52b8 in Sublime::Area::viewAdded(Sublime::AreaIndex*,
> Sublime::View*) () from /usr/lib/libKDevPlatformSublime.so.61
> #12 0x00007ebe01994353 in ?? () from /usr/lib/libKDevPlatformShell.so.61
> #13 0x00007ebe01995830 in ?? () from /usr/lib/libKDevPlatformShell.so.61
> #14 0x00007ebe01996518 in KDevelop::DocumentController::openDocument(QUrl
> const&, KTextEditor::Range const&,
> QFlags<KDevelop::IDocumentController::DocumentActivation>, QString const&,
> KDevelop::IDocument*) () from /usr/lib/libKDevPlatformShell.so.61
> #15 0x00007ebda00a2f47 in ?? () from
> /usr/lib/qt6/plugins/kdevplatform/61/kdevopenwith.so
> #16 0x00007ebda0524d40 in ?? () from
> /usr/lib/qt6/plugins/kdevplatform/61/kdevquickopen.so
> #17 0x00007ebda051660d in ?? () from
> /usr/lib/qt6/plugins/kdevplatform/61/kdevquickopen.so
> #18 0x00007ebda051ccbc in ?? () from
> /usr/lib/qt6/plugins/kdevplatform/61/kdevquickopen.so
> #19 0x00007ebdfff59358 in
> QCoreApplicationPrivate::sendThroughObjectEventFilters
> (receiver=receiver@entry=0x5fda74a60fd0, event=event@entry=0x7ffeacb72d40) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1243
> #20 0x00007ebe010fed8e in QApplicationPrivate::notify_helper
> (this=this@entry=0x5fda72b99600, receiver=receiver@entry=0x5fda74a60fd0,
> e=e@entry=0x7ffeacb72d40) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3295
> #21 0x00007ebe01103182 in QApplication::notify (this=<optimized out>,
> receiver=0x5fda74a60fd0, e=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:2719
> #22 0x00007ebdfff5a018 in QCoreApplication::notifyInternal2
> (receiver=0x5fda74a60fd0, event=0x7ffeacb72d40) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1106
> #23 0x00007ebdfff5a04a in QCoreApplication::forwardEvent (receiver=<optimized
> out>, event=<optimized out>, originatingEvent=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1121
> #24 0x00007ebe0116dbff in QWidgetWindow::handleDragLeaveEvent
> (this=<optimized out>, event=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qwidgetwindow.cpp:1020
> #25 QWidgetWindow::event (this=0x5fda74753900, event=0x7ffeacb72d40) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qwidgetwindow.cpp:331
> #26 0x00007ebe010fed9e in QApplicationPrivate::notify_helper (this=<optimized
> out>, receiver=0x5fda74753900, e=0x7ffeacb72d40) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3301
> #27 0x00007ebdfff5a018 in QCoreApplication::notifyInternal2
> (receiver=0x5fda74753900, event=0x7ffeacb72d40) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1106
> #28 0x00007ebdfff5a06d in QCoreApplication::sendSpontaneousEvent
> (receiver=<optimized out>, event=<optimized out>) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1560
> #29 0x00007ebe0078df7c in QGuiApplicationPrivate::processKeyEvent
> (e=0x5fda7a280bf0) at
> /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qguiapplication.cpp:2622
> #30 0x00007ebe0080d0c4 in QWindowSystemInterface::sendWindowSystemEvents
> (flags=flags@entry=...) at
> /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1113
> #31 0x00007ebe0080d2b7 in QWindowSystemInterface::flushWindowSystemEvents
> (flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1082
> #32 0x00007ebdfffa54aa in QObject::event (this=0x5fda72bba940,
> e=0x7ebdcc043b40) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1431
> #33 0x00007ebe010fed9e in QApplicationPrivate::notify_helper (this=<optimized
> out>, receiver=0x5fda72bba940, e=0x7ebdcc043b40) at
> /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3301
> #34 0x00007ebdfff5a018 in QCoreApplication::notifyInternal2
> (receiver=0x5fda72bba940, event=event@entry=0x7ebdcc043b40) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1106
> #35 0x00007ebdfff5a3f2 in QCoreApplication::sendEvent (receiver=<optimized
> out>, event=0x7ebdcc043b40) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1546
> #36 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0,
> data=0x5fda72bab5b0) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1879
> #37 0x00007ebe001cfea8 in QCoreApplication::sendPostedEvents (receiver=0x0,
> event_type=0) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1733
> #38 postEventSourceDispatch (s=s@entry=0x5fda72bb7fe0) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:246
> #39 0x00007ebdfcacd1e4 in g_main_dispatch (context=0x7ebdd4000f00) at
> ../glib/glib/gmain.c:3398
> #40 0x00007ebdfcb30e97 in g_main_context_dispatch_unlocked
> (context=0x7ebdd4000f00) at ../glib/glib/gmain.c:4249
> #41 g_main_context_iterate_unlocked.isra.0
> (context=context@entry=0x7ebdd4000f00, block=block@entry=1,
> dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4314
> #42 0x00007ebdfcacc615 in g_main_context_iteration (context=0x7ebdd4000f00,
> may_block=1) at ../glib/glib/gmain.c:4379
> #43 0x00007ebe001cd59d in QEventDispatcherGlib::processEvents
> (this=0x5fda72b880b0, flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
> #44 0x00007ebdfff65376 in QEventLoop::processEvents (this=0x7ffeacb73300,
> flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
> #45 QEventLoop::exec (this=0x7ffeacb73300, flags=...) at
> /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
> #46 0x00007ebdfff5d159 in QCoreApplication::exec () at
> /usr/src/debug/qt6-base/qtbase/src/corelib/global/qflags.h:77
> #47 0x00005fda4c22d1f6 in ?? ()
> #48 0x00007ebdff835488 in __libc_start_call_main
> (main=main@entry=0x5fda4c226180, argc=argc@entry=1,
> argv=argv@entry=0x7ffeacb738c8) at ../sysdeps/nptl/libc_start_call_main.h:58
> #49 0x00007ebdff83554c in __libc_start_main_impl (main=0x5fda4c226180,
> argc=1, argv=0x7ffeacb738c8, init=<optimized out>, fini=<optimized out>,
> rtld_fini=<optimized out>, stack_end=0x7ffeacb738b8) at
> ../csu/libc-start.c:360
> #50 0x00005fda4c22dbb5 in ?? ()
--
You are receiving this mail because:
You are watching all bug changes.
