/*
 * call-seq:
 *    conn.backend_pid() -> Fixnum
 *
 * Returns the process ID of the backend server
 * process for this connection.
 * Note that this is a PID on database server host.
 */
static VALUE
pgconn_backend_pid(VALUE self)
{
    return INT2NUM(PQbackendPID(get_pgconn(self)));
}