29 Dec
2009
29 Dec
'09
1:55 p.m.
On 12/30/2009 04:03 AM, hermann wrote:
Hi
gtk_widget_get_pango_context(widget) didn't need to unref, it's owned by
the widget you get it from. Unlike the context returned by
gtk_widget_create_pango_context()
I'm use mostly style->font_desc instead.
PangoLayout *pl;
PangoRectangle rect;
GtkStyle *style = gtk_widget_get_style(widget);
pango_font_description_set_family(style->font_desc, "sans");
pango_font_description_set_size(style->font_desc, 8 *
PANGO_SCALE);
gtk_widget_modify_font(widget, style->font_desc);
pl = pango_layout_new(style->font_desc);
pango_layout_set_text(pl, "99", -1);
pango_layout_get_pixel_extents(pl,&rect, NULL);
g_object_unref(pl);
regards hermann
Thanks. That's a nicer way of doing things but this call segfaults
pango_layout_new(style->font_desc)
gcc tells me this:
note: expected ‘struct PangoContext *’ but argument is of type ‘struct
PangoFontDescription *’
I have replaced it with this:
pl = pango_layout_new(gtk_widget_get_pango_context(widget));
But still get a memory leak. This makes it happen faster than the
previous method I was using. Back down to a couple of minutes before I
see the leak from 10 previously.
Patrick Shirkey
Boost Hardware Ltd
Am Mittwoch, den 30.12.2009, 01:18 +1100 schrieb Patrick Shirkey:
Hi,
I have some code in gtk2 that is leaking and I can't fix it. Over the
past two nights I have managed to get the leak down from 200MB/minute to
200MB/10 minutes but I can't get rid of it completely. It's annoying
because it increments in 200MB blocks so I have to wait for up to 10
mins to see if it is fixed or not. I have tried valgrind but it doesn't
really like jack and did not give me any useful output. I have traced
the leak through normal debugging and have verified that it does not
happen if I disable this offending code.
This code is run in the widgets realize event and the event is triggered
every 500ms.
PangoContext *pc = gtk_widget_get_pango_context(widget);
PangoLayout *pl;
PangoFontDescription *pfd;
PangoRectangle rect;
pfd = pango_font_description_new();
pango_font_description_set_family(pfd, "sans");
pango_font_description_set_size(pfd, 8 * PANGO_SCALE);
pango_context_set_font_description(pc, pfd);
pl = pango_layout_new(pc);
pango_layout_set_text(pl, "99", -1);
pango_layout_get_pixel_extents(pl,&rect, NULL);
pango_font_description_free(pfd);
g_object_unref(pc);
If I add another
g_object_unref(pl) ;
The app code will compile but when I run it I get this segfault:
*** glibc detected *** ./src/jackeq: free(): invalid pointer:
0x0000000001b87a60 ***
I can have one g_object_unref for either pl or pc without segfaulting
but not both.
I'm pretty sure this is the last leak I have to catch for the merged
gtkmeter.c/gtkmeterscale.c and I can't release jackeq until it is fixed.
Any assistance with this one is appreciated.
Cheers.