wait_any_alert
ret = wait_any_alert(fd, 0, NULL, 123, event, &index);
ret = wait_any_alert(fd, 0, NULL, 123, event, &index);
ret = wait_any_alert(fd, 2, objs, 123, event, &index);
ret = wait_any_alert(fd, 2, objs, 123, event, &index);
ret = wait_any_alert(fd, 2, objs, 123, event, &index);
ret = wait_any_alert(fd, 2, objs, 123, event, &index);
ret = wait_any_alert(fd, 2, objs, 123, event, &index);