ret = location_manager_set_position_updated_cb(manager, _position_updated_cb, interval, (void *)manager);
fprintf(stderr, "set_position_updated_cb: %d\n", ret);
}
ret = location_manager_set_position_updated_cb(manager, _position_updated_cb, interval, (void *)manager);
fprintf(stderr, "set_position_updated_cb: %d\n", ret);
}