Re: [Texmacs-dev] Lock on SVN

[Gubinelli Massimiliano]

Hi,

I'm looking at the code on the mac using Instruments (/Developer/ 
Applications/Instruments.app) and in particular the ObjectAlloc  
instrument. For the moment I can only see an anomalous allocation of  
small blocks from Qt (25 Mb, steadly growing each time I scroll up and  
down). It
seems related to the menu bar changing during the scroll.

This is  part of the result of running qt-temacs and performin some  
scrolls on the help page. The first column is the stack depth and the  
total allocated memory at that level. Going down we follow the path  
which show most of the allocations. As you see of 25 Mb of allocated  
memory, 17 Mb are due to calls inside  
QMacPixmapData::macCreatePixels() which is used in the Qt/Mac menu  
handling code (as far as I understand from the stack below).

Do you have any idea of the origin of the leak? I've tried to disable  
the code which change the menu/toolbars in qt_widget.cpp but this  
didn't had any effect on the memory consumption.

best
max


output from Instruments follows:

  34    25.05 Mb     * All Allocations * :0
  33 texmacs.bin   25.05 Mb     start
  32 texmacs.bin   25.05 Mb     main Texmacs/Texmacs/texmacs.cpp:301
  31 texmacs.bin   25.05 Mb     start_guile(int, char**, void (*) 
(int, char**))
  30 libguile.17.dylib   25.05 Mb     scm_boot_guile
  29 libguile.17.dylib   25.05 Mb     scm_with_guile
  28 libguile.17.dylib   25.05 Mb     scm_i_with_guile_and_parent
  27 libguile.17.dylib   25.05 Mb     scm_c_with_continuation_barrier
  26 libguile.17.dylib   25.05 Mb     scm_i_with_continuation_barrier
  25 libguile.17.dylib   25.05 Mb     scm_c_catch
  24 libguile.17.dylib   25.05 Mb     c_body
  23 libguile.17.dylib   25.05 Mb     invoke_main_func
  22 texmacs.bin   25.05 Mb     new_call_back(void*, int, char**)
  21 texmacs.bin   25.05 Mb     TeXmacs_main(int, char**)
  20 texmacs.bin   25.05 Mb     gui_start_loop()
  19 texmacs.bin   25.05 Mb     qt_gui_rep::event_loop() Plugins/Qt/ 
qt_gui.cpp:196
  18 QtCore   20.66 Mb      
QCoreApplication::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
  17 QtGui   20.66 Mb      
QEventDispatcherMac 
::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
  16 QtCore   18.95 Mb      
QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*)
  15 QtCore   18.95 Mb     QCoreApplication::notifyInternal(QObject*,  
QEvent*)
  14 QtGui   18.95 Mb     QApplication::notify(QObject*, QEvent*)
  13 QtGui   18.95 Mb      
QApplicationPrivate::notify_helper(QObject*, QEvent*)
  12 QtGui   18.86 Mb     QMenu::event(QEvent*)
  11 QtGui   18.86 Mb     QWidget::event(QEvent*)
  10 QtGui   18.86 Mb     QWidget::ensurePolished() const
   9 QtCore   18.86 Mb     QCoreApplication::notifyInternal(QObject*,  
QEvent*)
   8 QtGui   18.86 Mb     QApplication::notify(QObject*, QEvent*)
   7 QtGui   18.86 Mb      
QApplicationPrivate::notify_helper(QObject*, QEvent*)
   6 QtGui   18.86 Mb     QMenu::event(QEvent*)
   5 QtGui   18.86 Mb     QWidget::event(QEvent*)
   4 QtGui   18.79 Mb     QMacStyle::polish(QWidget*)
   3 QtGui   18.09 Mb     QPixmap::QPixmap(int, int)
   2 QtGui   18.09 Mb     QPixmap::init(int, int, int)
   1 QtGui   17.97 Mb     QMacPixmapData::macCreatePixels()


On 15 déc. 08, at 17:11, Joris van der Hoeven wrote:

> On Mon, Dec 15, 2008 at 04:59:43PM +0100, Gubinelli Massimiliano  
> wrote:
> > I've to commit a small change to qt_menu.cpp to correct a compilation
> > error. can I do it?
>
> Yes please. Please keep tuned: I have some questions about
> your memory management.
>
>
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