Re: GTK free function doesn't appear to have any affect.

[dE <de techno gmail com>]

On 06/16/13 00:40, Allin Cottrell wrote:
> On Sat, 15 Jun 2013, dE wrote:
>
> > On 06/15/13 14:24, dE wrote:
> > > Yes, I realized that over time, but there appears to be something 
> > > wrong with g_object_unref or in general all GTK free functions on my 
> > > system.
> > >
> > > In this piece of code --
> > >
> > > #include <stdio.h>
> > > #include <gtk/gtk.h>
> > > #include <stdlib.h>
> > > #include <string.h>
> > > #define COLS 300
> > > void main (  ) {
> > >        gtk_init( NULL, NULL );
> > >
> > >
> > >     int i, j;
> > >    char *temp;
> > >    GtkTreeIter current;
> > >    GType *str_type = g_malloc (sizeof (GType) * COLS);
> > >     for (i = 0; i <= COLS; i++)
> > >         str_type [i] = G_TYPE_STRING;
> > >    GtkListStore *store = gtk_list_store_newv (COLS, str_type);
> > >    g_free (str_type);
> > >    for (i = 0; i < 300000 ; i++) {
> > >       gtk_list_store_append ( store, &current );
> > >        for ( j = 0 ; j < COLS ; j++ ) {
> > >         gtk_list_store_set ( store , &current , j , "Hello world 
> > > Hello world Hello world!", -1 );
> > >       }
> > >    }
> > >    printf ( "freeing after 10 seconds\n" );
> > >    sleep (10);
> > >    free_ptr ( store );
> > >    printf ("Now freed\n");
> > >    sleep (10);
> > > }
> > >
> > > free_ptr ( GtkListStore *store ) {
> > >        gtk_list_store_clear (store);
> > >     g_object_unref( G_OBJECT (store) );
> > > }
> > >
> > > Calling free_ptr ( store ); increases memory usage, even during the 
> > > last 10 second free period. It'll take at most 7GB of memory.
> > >
> > > Here there're no GtkWidgets involved. GtkListStore inherits directly 
> > > from GObject.
> >
> > Is this piece of code itself ok?
>
> Certainly not. "void main()" is not valid C for a start (main must 
> return int), then the first loop runs off the end of the str_type 
> array...
>
> Allin Cottrell

Apart from that, in the free_ptr? Does memory get freed for anyone else?

#include <stdio.h>
#include <gtk/gtk.h>
#define COLS 200
void free_ptr ( GtkListStore * );

int main (  ) {
    gtk_init( NULL, NULL );
    int i, j;
    char *temp;
    GtkTreeIter current;
    GType *str_type = g_malloc (sizeof (GType) * COLS);
    for (i = 0; i < COLS; i++)
        str_type [i] = G_TYPE_STRING;
    GtkListStore *store = gtk_list_store_newv (COLS, str_type);
    g_free (str_type);
    for (i = 0; i < 300000 ; i++) {
        gtk_list_store_append ( store, &current );
        for ( j = 0 ; j < COLS ; j++ ) {
            gtk_list_store_set ( store , &current , j , "Hello world 
Hello world Hello world!", -1 );
        }
    }
    printf ( "freeing after 10 seconds\n" );
    sleep (10);
    free_ptr ( store );
    printf ("Now freed\n");
    sleep (10);
    return 0;
}

void free_ptr ( GtkListStore *store ) {
    gtk_list_store_clear (store);
    g_object_unref( G_OBJECT (store) );
}