Hi,
I dont have any pixmaps or images in my sample application. I have
attached my program. Its a simple program having two windows. First
window has 2 buttons open and close. When open is clicked it opens
another widow which has a close button. When close button on second
window is pressed second window is destroyed.
Its here that i observe leaks. Memory increases when second window is
created and when its destroyed memory is not freed at all on DirectFB
bacend.
Am i calling the correct APIs? Help is greatly appreciated. Somehow i
feel destroy is not happening properly!
--
Regards,
Harinandan S
On Wed, May 14, 2008 at 12:49 PM, <jcupitt@xxxxxxxxx> wrote:
> 2008/5/14 Harinandan S <harinandans@xxxxxxxxx>:
> > I observed continuous accumulation of memory while running GTK over
> > DirectFB on MontaVista linux on TI Davinci. I also observed
> > significant memory accumulation while running GTK-win32 on Windows XP.
> > But to my surprise there is no accumulation of memory
> > on GTK-X window running on RHEL 4 on x86.
>
> I'm only speculating, but some resources (server-side images or
> pixmaps, for example) are kept by the X server and won't show
> significant memuse for your application in "top". With other backends,
> like win32 or directfb, you may well see these objects in your own
> memory space.
>
> I'd suggest running with valgrind and looking for leaks with that. For
> what it's worth, my largish project (250 kloc or so) does not seem to
> leak significantly under linux or windows.
>
> John
>
#include <gtk/gtk.h>
GtkWidget*
create_window1 (void);
GtkWidget*
create_window2 (void);
void
on_open_clicked (GtkButton *button,
gpointer user_data)
{
/* open a pop-up window */
GtkWidget *window2 = create_window2 ();
gtk_widget_show (window2);
}
void
on_close_clicked (GtkButton *button,
gpointer user_data)
{
GtkWidget *window = user_data;
gtk_widget_destroy(window);
}
GtkWidget*
create_window1 (void)
{
GtkWidget *window1;
GtkWidget *fixed1;
GtkWidget *open;
GtkWidget *close;
window1 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_size_request (window1, 640, 480);
gtk_window_set_title (GTK_WINDOW (window1), "window1");
fixed1 = gtk_fixed_new ();
gtk_widget_show (fixed1);
gtk_container_add (GTK_CONTAINER (window1), fixed1);
open = gtk_button_new_with_mnemonic ("open");
gtk_widget_show (open);
gtk_fixed_put (GTK_FIXED (fixed1), open, 208, 200);
gtk_widget_set_size_request (open, 64, 40);
close = gtk_button_new_with_mnemonic ("close");
gtk_widget_show (close);
gtk_fixed_put (GTK_FIXED (fixed1), close, 296, 200);
gtk_widget_set_size_request (close, 72, 40);
/* send pointer to window1 to callback function */
g_signal_connect ((gpointer) open, "clicked",
G_CALLBACK (on_open_clicked),
window1);
g_signal_connect ((gpointer) close, "clicked",
G_CALLBACK (on_close_clicked),
window1);
return window1;
}
GtkWidget*
create_window2 (void)
{
GtkWidget *window2;
GtkWidget *fixed2;
GtkWidget *close;
window2 = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_size_request (window2, 320, 240);
gtk_window_set_title (GTK_WINDOW (window2), "window2");
fixed2 = gtk_fixed_new ();
gtk_widget_show (fixed2);
gtk_container_add (GTK_CONTAINER (window2), fixed2);
close = gtk_button_new_with_mnemonic ("close");
gtk_widget_show (close);
gtk_fixed_put (GTK_FIXED (fixed2), close, 144, 112);
gtk_widget_set_size_request (close, 80, 48);
g_signal_connect ((gpointer) close, "clicked",
G_CALLBACK (on_close_clicked),
window2);
return window2;
}
int
main (int argc, char *argv[])
{
GtkWidget *window1;
gtk_init (&argc, &argv);
/* create top window*/
window1 = create_window1 ();
gtk_widget_show (window1);
g_signal_connect ((gpointer) window1, "destroy", G_CALLBACK(gtk_main_quit),
NULL);
gtk_main ();
return 0;
}
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