execute_on_log
ret = f.execute_on_log(&(apply_log_entry), (char *) &internal_db);
count = f.execute_on_log(&(entry_since), (char *) &ti, FALSE);
ret = f.execute_on_log(&(apply_log_entry), (char *) this);
return (execute_on_log(&(print_log_entry), NULL));
return (execute_on_log(&(print_log_entry), NULL));