[Digikam-devel] Re: crash under macosx (again)

[Gilles Caulier]

It sound like really a problem in CImg code.

Trying to run the second tool which use preview icon widget for image
editor... AutoColorCorrection, it doesn't crash.

This want mean that preview icon thread interface work well.

Now, if i try to use simple Blur image editor tool, which use Cimg
API, it crash :

showfoto(95420)/digikam (core)
Digikam::EditorToolThreaded::slotEffect: Preview  "Blur"  started...
showfoto(95420)/digikam (core) Digikam::BlurFilter::gaussianBlurImage:
BlurFilter::Process Computation...
showfoto(95420,0x0) malloc: *** error for object 0x3f800000: pointer
being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000008
[Switching to process 95420]
0x00007fff86c3e7e7 in pthread_once ()
(gdb) bt
#0  0x00007fff86c3e7e7 in pthread_once ()
#1  0x00007fff86d0778d in _simple_asl_log ()
#2  0x00007fff86d01e8b in _malloc_vprintf ()
#3  0x00007fff86d01f52 in malloc_printf ()
#4  0x00007fff86c2c5fe in free ()
#5  0x00000001000e8056 in cimg_library::CImg<unsigned char>::~CImg
(this=0x123585c50) at CImg.h:10100
#6  0x00000001000e6d0d in Digikam::BlurFilter::gaussianBlurImage
(this=0x12236d2c0, data=0x130cbe000 ";???\txp?", width=4487,
height=3050, sixteenBit=false, radius=0.10000000000000001) at
/Users/agnes/Devel/trunk/graphics/digikam/libs/dimg/filters/fx/blurfilter.cpp:96
(gdb)

I don't know yet why...

Gilles

2010/11/11 Gilles Caulier <caulier.gilles at gmail.com>:
> Hi all,
>
> I continue my investiguations/tests/hack into macosx.
>
> After to have fixed a crash relevant of openmp with libraw (openmp do
> not feel to be instancied into a separate thread), i go back to the
> famous crash with Batch Queue Manager and CImg::blur function...
>
> in fact, the problem is not located in BQM, but in B&W converter which
> is available into editor and BQM.
>
> If i run showfoto, and try to use B&W tool, it crash too... See below :
>
> showfoto(88000)/digikam (core) Digikam::BlurFilter::gaussianBlurImage:
> BlurFilter::Process Computation...
> showfoto(88000)/digikam (core) Digikam::BlurFilter::gaussianBlurImage:
> BlurFilter::Process Computation...
> showfoto(88000)/digikam (core) Digikam::BlurFilter::gaussianBlurImage:
> BlurFilter::Process Computation...
> showfoto(88000,0x1308b1000) malloc: *** error for object 0x3f800000:
> pointer being freed was not allocated
> *** set a breakpoint in malloc_error_break to debug
> showfoto(88000,0x1309b7000) malloc: *** error for object 0x3f800000:
> pointer being freed was not allocated
> *** set a breakpoint in malloc_error_break to debug
> showfoto(88000,0x130934000) malloc: *** error for object 0x3f800000:
> pointer being freed was not allocated
> *** set a breakpoint in malloc_error_break to debug
>
> Program received signal SIGABRT, Aborted.
> 0x000000010235edc5 in QWidget::testAttribute_helper ()
> (gdb) bt
> #0  0x000000010235edc5 in QWidget::testAttribute_helper ()
> #1  0x00000001022e470f in QMacStyle::widgetSizePolicy ()
> #2  0x00000001025c9d52 in QStyleOption::init ()
> #3  0x00000001026c8d74 in QFrame::drawFrame ()
> #4  0x00000001026c8e9e in QFrame::paintEvent ()
> #5  0x000000010236fd6a in QWidget::event ()
> #6  0x00000001026c925c in QFrame::event ()
> #7  0x00000001023193bd in QApplicationPrivate::notify_helper ()
> #8  0x000000010231d51d in QApplication::notify ()
> #9  0x0000000101c4603e in KApplication::notify ()
> #10 0x000000010347c5bc in QCoreApplication::notifyInternal ()
> #11 0x000000010231853c in qt_sendSpontaneousEvent ()
> #12 0x00000001022c347d in -[QCocoaView drawRect:] ()
> #13 0x00007fff83d53081 in -[NSView _drawRect:clip:] ()
> #14 0x00007fff83d51cf4 in -[NSView
> _recursiveDisplayAllDirtyWithLockFocus:visRect:] ()
> #15 0x00007fff83d503c6 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #16 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #17 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #18 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #19 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #20 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #21 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #22 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #23 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #24 0x00007fff83d51292 in -[NSView
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #25 0x00007fff83d4fee8 in -[NSThemeFrame
> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
> ()
> #26 0x00007fff83d4c79a in -[NSView
> _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:]
> ()
> #27 0x00007fff83cc5ff6 in -[NSView displayIfNeeded] ()
> #28 0x00000001022c7807 in -[QCocoaWindow displayIfNeeded] ()
> #29 0x00007fff83cc0ea2 in _handleWindowNeedsDisplay ()
> #30 0x00007fff88d9d077 in __CFRunLoopDoObservers ()
> #31 0x00007fff88d78ef4 in __CFRunLoopRun ()
> #32 0x00007fff88d7884f in CFRunLoopRunSpecific ()
> #33 0x00007fff8205e91a in RunCurrentEventLoopInMode ()
> #34 0x00007fff8205e67d in ReceiveNextEventCommon ()
> #35 0x00007fff8205e5d8 in BlockUntilNextEventMatchingListInMode ()
> #36 0x00007fff83c9629e in _DPSNextEvent ()
> #37 0x00007fff83c95bed in -[NSApplication
> nextEventMatchingMask:untilDate:inMode:dequeue:] ()
> #38 0x00007fff83c5b8d3 in -[NSApplication run] ()
> #39 0x00000001022d4c75 in QEventDispatcherMac::processEvents ()
> #40 0x00000001035563a4 in QEventLoop::processEvents ()
> #41 0x00000001035566c4 in QEventLoop::exec ()
> #42 0x0000000103557ccc in QCoreApplication::exec ()
> #43 0x00000001000346af in main (argc=1, argv=0x7fff5fbff740) at
> /Users/agnes/Devel/trunk/graphics/digikam/showfoto/main.cpp:87
> #44 0x000000010000824c in start ()
> (gdb)
>
> Why CImg::blur() is called here ?  because of Infrared filter
> rendering. B&W tool will provide a preview of B&W effects, including
> IR film.
>
> These preview are located on the right side panel, as large icons.
> Each icons preview are processed in a separate thread, following this
> code :
>
> http://lxr.kde.org/source/extragear/graphics/digikam/utilities/imageeditor/widgets/previewlist.cpp#61
>
> PreviewThreadWrapper is an object dedicated to wrap threaded filter to
> render preview for each items hosted in the listview :
>
> http://lxr.kde.org/source/extragear/graphics/digikam/utilities/imageeditor/widgets/previewlist.cpp#218
>
> For each list view item, you create an instance of a threaded filter.
> when all is ready, you call this method :
>
> http://lxr.kde.org/source/extragear/graphics/digikam/utilities/imageeditor/widgets/previewlist.cpp#259
>
> ... to start all icon item thread and render preview. The advantage of
> this way is to be able to display a busy indicator over the icon
> during computation.
>
> This way is used in B&W tool. look here :
>
> http://lxr.kde.org/source/extragear/graphics/digikam/imageplugins/color/bwsepiatool.cpp#142
> http://lxr.kde.org/source/extragear/graphics/digikam/libs/dimg/filters/bw/bwsepiasettings.cpp#425
>
> The question is : why it crash at this place ? Under Linux and
> Windows, i cannot see this problem.
>
> All suggestions are welcome
>
> Gilles Caulier
>