I have a multi-threaded application that I developed using gtk 2.4.1 (I know
it's old - the SA hasn't had time to get to it yet - so I'll be moving to
latest and greatest soon).
Anyway, this application has multiple "views" - in that you can open
different *.glade files (xml) and they open up in "viewing window" portion of
the screen. This application acts as a monitor program (like the control room
in a reactor - numbers go up and down, indicators flex, and levels rise). If I
only look at one "view", everything is fine.
But if I switch to a different view (to see different numbers, indicators,
and levels), things get a little strange. At first glance, everything seems
fine. But if I leave the application up overnight, then the application is
taking up most 95+% of the cpu, and it runs very very slow. The second I break
the app, then everything returns to normal.
I ran the debugger and came up with this (for the primary gtk thread - all
other threads aren't blocking).
??
_XRead() from libX11.so.6
_XReply() from libX11.so.6
_XIDHandler() from libX11.so.6
XCreatePixmap() from libX11.so.6
gdk_pixmap_new from gdkpixmap-x11.c
gdk_window_begin_paint_region from gdkwindow.c
gtk_main_do_event from gtkmain.c
Is there any particular reason that gdk_pixmap_new should even be running?
Any hints about which direction I should poke around (besides upgrading gtk -
I'm getting to that!)
I've created a few custom widgets for this monitor application, but they are
"passive" widgets (no user input/effect) - but they are speedy and can do some
interesting things. I'm wondering if I induced this "very very slow" response
with my widgets? They are based on the standard widgets, but I'm still getting
the nack of programming widgets. I'd share them if anyone was interested -
might even help debug and fix my current problem!
I've been up and down the multi-threaded gtk problems, using gtk_enter(), and
gtk_leave() - and using a debugger to make sure I have no multi-threaded issues
(stepped on myself a number of times I tell ya!). So I'm pretty sure I don't
have a thread problem (no more X11 asynch problems).
Thanks in advance for any help,
Mark
PS - if you ever want to combine CORBA and gtk, use multi-threads rather than
the mico dispatcher (it works for very very simple things, but cumbersome to
setup, event loops get pissy with each-other, and making sure you catch all
events in a high event quantity system will make you cry)
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