iter = bt_ctf_iter_create(ctx, &begin_pos, NULL);
	if (!iter) {
		ret = -1;
		goto error_iter;
	}
	while ((ctf_event = bt_ctf_iter_read_event(iter))) {

		//do something

		ret = bt_iter_next(bt_ctf_get_iter(iter));
		if (ret < 0)
			goto end;
	}
	ret = 0;

end:

	bt_ctf_iter_destroy(iter);