[Digikam-devel] Strange crashes

[Andi Clemens]

Ok the crashes appear ALWAYS when thumbnails are still generated.
I just tested it. As long as the thumbs are generated and you close digiKam, 
you get a crash. If it is finished, everything is fine.

Andi

On Wednesday 20 May 2009 21:01:19 Andi Clemens wrote:
> Hi,
>
> I just watched a folder, closed digiKam and it crashed.
> As I closed it, thumbs were still generated. Unfortunately I have my /tmp
> folder in a different partition as my home folder, so the rename macro we
> are using is not working here.
> Anyway after closing the app, I get the following backtrace:
>
> rogram received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0xa70ffb90 (LWP 18442)]
> 0xb6f2480b in QString (this=0xa8708430, other=@0x8) at
> /usr/include/QtCore/qstring.h:711
> 711     inline QString::QString(const QString &other) : d(other.d)
> (gdb) bt
> #0  0xb6f2480b in QString (this=0xa8708430, other=@0x8) at
> /usr/include/QtCore/qstring.h:711
> #1  0xb6ffefa9 in QHashNode (this=0xa8708428, key0=@0x8, value0=@0xc) at
> /usr/include/QtCore/qhash.h:217
> #2  0xb70001db in QHash<QString, Digikam::LoadingProcess*>::duplicateNode
> (node=0x0, newNode=0xa8708428) at /usr/include/QtCore/qhash.h:506
> #3  0xb5307e58 in QHashData::detach_helper () from /usr/lib/libQtCore.so.4
> #4  0xb6ffef09 in QHash<QString, Digikam::LoadingProcess*>::detach_helper
> (this=0x96a5890) at /usr/include/QtCore/qhash.h:568
> #5  0xb6ffd667 in QHash<QString, Digikam::LoadingProcess*>::detach
> (this=0x96a5890) at /usr/include/QtCore/qhash.h:284
> #6  0xb6ffc099 in QHash<QString, Digikam::LoadingProcess*>::remove
> (this=0x96a5890, akey=@0xa70ff18c) at /usr/include/QtCore/qhash.h:766
> #7  0xb6ff99b6 in Digikam::LoadingCache::removeLoadingProcess
> (this=0x96a5830, process=0xbd60174) at
> /home/andi/Programmieren/KDE/digiKam/digikam_KDE4/digikam/libs/threadimagei
>o/loadingcache.cpp:162 #8  0xb700ba35 in
> Digikam::ThumbnailLoadingTask::execute (this=0xbd600a8) at
> /home/andi/Programmieren/KDE/digiKam/digikam_KDE4/digikam/libs/threadimagei
>o/thumbnailtask.cpp:143 #9  0xb6ff391c in Digikam::LoadSaveThread::run
> (this=0xbceb378) at
> /home/andi/Programmieren/KDE/digiKam/digikam_KDE4/digikam/libs/threadimagei
>o/loadsavethread.cpp:139 #10 0xb52e53be in ?? () from
> /usr/lib/libQtCore.so.4
> #11 0xb52604c5 in start_thread () from /lib/libpthread.so.0
> #12 0xb50acf9e in clone () from /lib/libc.so.6
>
>
>
>
>
> I fixed the bug by checking if the process pointer in loadingcache.cpp:162
> is valid, but then I get more errors in different places. For example here:
>
>
> #0  0xb52dbf57 in QMutex::lock () from /usr/lib/libQtCore.so.4
> #1  0xb6ff7405 in CacheLock (this=0xa78ff1d0, cache=0x9649318) at
> /home/andi/Programmieren/KDE/digiKam/digikam_KDE4/digikam/libs/threadimagei
>o/loadingcache.cpp:447 #2  0xb70079b1 in
> Digikam::ThumbnailLoadingTask::execute (this=0xbfd23f0) at
> /home/andi/Programmieren/KDE/digiKam/digikam_KDE4/digikam/libs/threadimagei
>o/thumbnailtask.cpp:138 #3  0xb6fef91c in Digikam::LoadSaveThread::run
> (this=0xbf5d650) at
> /home/andi/Programmieren/KDE/digiKam/digikam_KDE4/digikam/libs/threadimagei
>o/loadsavethread.cpp:139 #4  0xb52e13be in ?? () from
> /usr/lib/libQtCore.so.4
> #5  0xb525c4c5 in start_thread () from /lib/libpthread.so.0
> #6  0xb50a8f9e in clone () from /lib/libc.so.6
>
>
>
>
> It looks like some locking problem? But why? Could it be my system?
>
> Andi
>
> _______________________________________________
> Digikam-devel mailing list
> Digikam-devel at kde.org
> https://mail.kde.org/mailman/listinfo/digikam-devel