t.Registration.html"><code>Registration</code></a> can be used directly. This provides the lowest
level primitive needed for integrating with the reactor: a stream of
readiness events.</p>
</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
<table>
                       <tr class=' module-item'>
                           <td><a class="struct" href="struct.Background.html"
                                  title='struct tokio::reactor::Background'>Background</a></td>
         