Re: gtk_entry_set_text() and very fast updates

["Bruce A. Smith" <bruces mail petech ac za>]

Hi

I may be wrong here, but doesn't gtk_entry_set_text make a copy of the
string given. Try to
free temp each time after the text setting. Unfortunately I'm nowhere near a
GTK+ box to give this
a test myself. This may just break the app badly if it needs the original.

Hope this works.

Bruce

----- Original Message -----
From: "David Ford" <david linux com>
To: "Havoc Pennington" <hp redhat com>
Cc: <gtk-list gnome org>
Sent: Tuesday, November 14, 2000 10:47 PM
Subject: Re: gtk_entry_set_text() and very fast updates


> Havoc Pennington wrote:
>
> > David Ford <david linux com> writes:
> > > Question, I have need to update an entry box on the order of ~200ms
> > > intervals.  Using gtk_entry_set_text() only seems to grow in memory
> > > usage.
> > >
> > > [...]
> > >    commaval=commafy(tuples);
> > >    sprintf(temp, "%*s", 9, commaval);
> > >    free(commaval);
> > >    gtk_entry_set_text(GTK_ENTRY(count_field), temp);
> > > [...]
> > >
> > > Consider this the body of a loop.  Yes, I'm new to gtk starting last
> > > wednesday evening.  Can someone recommend a leak proof method other
than
> > > widget de/construction?
> > >
> >
> > If you're running that in a loop without ever running the GTK main
> > loop, the memory leak is probably just GTK queuing up more and more
> > redraws or something; try running the main loop once in a while.
>
> The loop is iterated by a gtk timer, the program sits in gtk main
normally.
> sql_refresh is initially called by a button.  I've commented everything in
> the function except for the set_text.  Assume conn is null only for the
first
> call and valid thereafter.  It boils down to the below with main() having
> entered while()..gtk_main().
>
> sql_refresh()
> [...]
>    if(!conn) {
>       auto_push_statusbar("You are not linked to the SQL server -- Going
> online");
>       sql_connect();
>       if(!conn) {
>          auto_push_statusbar("Unable to link to SQL server");
>          return;
>       }
>       else
>          auto_push_statusbar("Connected to SQL server, refreshing
every...");
>
>          timeoutid=gtk_timeout_add(200, (void *)&auto_refresh, NULL);
>    }
> [...]
>     gtk_entry_set_text()
> }
>
> auto_refresh()
> {
>    GtkButton *dummy1=NULL;
>    gpointer dummy2=0;
>    sql_refresh(dummy1, dummy2);
>    return;
> }
>
> If I comment out the set_text call, I can run the program at 1ms for 20
> minutes and see no mem leak.
>
> -d
>
>