ode>tokio::run</code></a>. The Tokio runtime's executor
sets a thread-local variable referencing the associated <a href="struct.Reactor.html"><code>Reactor</code></a> instance
and <a href="struct.Handle.html#method.current"><code>Handle::current</code></a> (used by <a href="struct.Registration.html"><code>Registration</code></a>) returns the reference.</p>
<h2 id="implementation" class="section-header"><a href="#implementation">Implementation</a></h2>
<p>The reactor implementation uses <a href="https://gith