RDI code busy-waiting on running target?

[Andrew Cagney]

> +    struct timeval timeout;
> +    timeout.tv_sec = 0;
> +    timeout.tv_usec = 10000;
> +
> +    select(0,0,0,0,&timeout);
> +    

Doing a select on nothing strikes me as wrong.  How is this code 
detecting that something is ``ready''?

Andrew