thread

["Blowfish" <blow_fish telkom net>]

i have 2 gtkbutton, i'm doing a heavy load process when i 
click my button1

void
on_button1_clicked  (GtkButton *button, gpointer 
user_data)
                                      
{

 gdk_threads_enter ();

 while(1) {
    do_heavy_load();
 }

 gdk_threads_leave();

}

how can i stop my process with button2 ?, because the 
program seems to be waiting button1 callback function to 
finished executing ?

Thanks
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