eceive events from the
operating system (<a href="http://man7.org/linux/man-pages/man7/epoll.7.html">epoll</a>, <a href="https://www.freebsd.org/cgi/man.cgi?query=kqueue&amp;sektion=2">kqueue</a>, <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa365198(v=vs.85).aspx">IOCP</a>, etc...) and forward them to
waiting tasks. It is the bridge between operating system and the futures
model.</p>
<h1 id="overview" class="section-header"><a href="#overview">Overview</a></h1>
<p>When using Tokio, all