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<p class='location'>Trait Evented</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.register">register</a><a href="#tymethod.reregister">reregister</a><a href="#tymethod.deregister">deregister</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>mio</a>::<wbr><a href='index.html'>event</a></p><script>window.sidebarCurrent = {name: 'Evented', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>mio</a>::<wbr><a href='index.html'>event</a>::<wbr><a class="trait" href=''>Evented</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../../src/mio/event_imp.rs.html#123-155' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust trait'>pub trait Evented {
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fn <a href='#tymethod.register' class='fnname'>register</a>(<br> &self, <br> poll: &<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>, <br> token: <a class="struct" href="../../mio/struct.Token.html" title="struct mio::Token">Token</a>, <br> interest: <a class="struct" href="../../mio/struct.Ready.html" title="struct mio::Ready">Ready</a>, <br> opts: <a class="struct" href="../../mio/struct.PollOpt.html" title="struct mio::PollOpt">PollOpt</a><br> ) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.reregister' class='fnname'>reregister</a>(<br> &self, <br> poll: &<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>, <br> token: <a class="struct" href="../../mio/struct.Token.html" title="struct mio::Token">Token</a>, <br> interest: <a class="struct" href="../../mio/struct.Ready.html" title="struct mio::Ready">Ready</a>, <br> opts: <a class="struct" href="../../mio/struct.PollOpt.html" title="struct mio::PollOpt">PollOpt</a><br> ) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.deregister' class='fnname'>deregister</a>(&self, poll: &<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>;
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}</pre></div><div class='docblock'><p>A value that may be registered with <code>Poll</code></p>
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<p>Values that implement <code>Evented</code> can be registered with <code>Poll</code>. Users of Mio
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should not use the <code>Evented</code> trait functions directly. Instead, the
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equivalent functions on <code>Poll</code> should be used.</p>
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<p>See <a href="../struct.Poll.html"><code>Poll</code></a> for more details.</p>
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<h1 id="implementing-evented" class="section-header"><a href="#implementing-evented">Implementing <code>Evented</code></a></h1>
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<p>There are two types of <code>Evented</code> values.</p>
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<ul>
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<li>
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<p><strong>System</strong> handles, which are backed by sockets or other system handles.
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These <code>Evented</code> handles will be monitored by the system selector. In this
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case, an implementation of <code>Evented</code> delegates to a lower level handle.</p>
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</li>
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<li>
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<p><strong>User</strong> handles, which are driven entirely in user space using
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<a href="../struct.Registration.html"><code>Registration</code></a> and <a href="../struct.SetReadiness.html"><code>SetReadiness</code></a>. In this case, the implementer takes
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responsibility for driving the readiness state changes.</p>
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</li>
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</ul>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<p>Implementing <code>Evented</code> on a struct containing a socket:</p>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">mio</span>::{<span class="ident">Ready</span>, <span class="ident">Poll</span>, <span class="ident">PollOpt</span>, <span class="ident">Token</span>};
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<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">event</span>::<span class="ident">Evented</span>;
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<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">TcpStream</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
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<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">MyEvented</span> {
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<span class="ident">socket</span>: <span class="ident">TcpStream</span>,
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}
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<span class="kw">impl</span> <span class="ident">Evented</span> <span class="kw">for</span> <span class="ident">MyEvented</span> {
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<span class="kw">fn</span> <span class="ident">register</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">poll</span>: <span class="kw-2">&</span><span class="ident">Poll</span>, <span class="ident">token</span>: <span class="ident">Token</span>, <span class="ident">interest</span>: <span class="ident">Ready</span>, <span class="ident">opts</span>: <span class="ident">PollOpt</span>)
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<span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span>
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{
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<span class="comment">// Delegate the `register` call to `socket`</span>
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<span class="self">self</span>.<span class="ident">socket</span>.<span class="ident">register</span>(<span class="ident">poll</span>, <span class="ident">token</span>, <span class="ident">interest</span>, <span class="ident">opts</span>)
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}
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<span class="kw">fn</span> <span class="ident">reregister</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">poll</span>: <span class="kw-2">&</span><span class="ident">Poll</span>, <span class="ident">token</span>: <span class="ident">Token</span>, <span class="ident">interest</span>: <span class="ident">Ready</span>, <span class="ident">opts</span>: <span class="ident">PollOpt</span>)
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<span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span>
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{
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<span class="comment">// Delegate the `reregister` call to `socket`</span>
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<span class="self">self</span>.<span class="ident">socket</span>.<span class="ident">reregister</span>(<span class="ident">poll</span>, <span class="ident">token</span>, <span class="ident">interest</span>, <span class="ident">opts</span>)
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}
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<span class="kw">fn</span> <span class="ident">deregister</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">poll</span>: <span class="kw-2">&</span><span class="ident">Poll</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
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<span class="comment">// Delegate the `deregister` call to `socket`</span>
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<span class="self">self</span>.<span class="ident">socket</span>.<span class="ident">deregister</span>(<span class="ident">poll</span>)
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}
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}</pre>
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<p>Implement <code>Evented</code> using <a href="../struct.Registration.html"><code>Registration</code></a> and <a href="../struct.SetReadiness.html"><code>SetReadiness</code></a>.</p>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">mio</span>::{<span class="ident">Ready</span>, <span class="ident">Registration</span>, <span class="ident">Poll</span>, <span class="ident">PollOpt</span>, <span class="ident">Token</span>};
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<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">event</span>::<span class="ident">Evented</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Instant</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">thread</span>;
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<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Deadline</span> {
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<span class="ident">when</span>: <span class="ident">Instant</span>,
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<span class="ident">registration</span>: <span class="ident">Registration</span>,
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}
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<span class="kw">impl</span> <span class="ident">Deadline</span> {
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<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">when</span>: <span class="ident">Instant</span>) <span class="op">-></span> <span class="ident">Deadline</span> {
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<span class="kw">let</span> (<span class="ident">registration</span>, <span class="ident">set_readiness</span>) <span class="op">=</span> <span class="ident">Registration</span>::<span class="ident">new2</span>();
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<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> {
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<span class="kw">let</span> <span class="ident">now</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>();
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<span class="kw">if</span> <span class="ident">now</span> <span class="op"><</span> <span class="ident">when</span> {
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<span class="ident">thread</span>::<span class="ident">sleep</span>(<span class="ident">when</span> <span class="op">-</span> <span class="ident">now</span>);
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}
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<span class="ident">set_readiness</span>.<span class="ident">set_readiness</span>(<span class="ident">Ready</span>::<span class="ident">readable</span>());
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});
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<span class="ident">Deadline</span> {
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<span class="ident">when</span>: <span class="ident">when</span>,
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<span class="ident">registration</span>: <span class="ident">registration</span>,
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}
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||
}
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<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_elapsed</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> {
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||
<span class="ident">Instant</span>::<span class="ident">now</span>() <span class="op">>=</span> <span class="self">self</span>.<span class="ident">when</span>
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}
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}
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<span class="kw">impl</span> <span class="ident">Evented</span> <span class="kw">for</span> <span class="ident">Deadline</span> {
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<span class="kw">fn</span> <span class="ident">register</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">poll</span>: <span class="kw-2">&</span><span class="ident">Poll</span>, <span class="ident">token</span>: <span class="ident">Token</span>, <span class="ident">interest</span>: <span class="ident">Ready</span>, <span class="ident">opts</span>: <span class="ident">PollOpt</span>)
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<span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span>
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{
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<span class="self">self</span>.<span class="ident">registration</span>.<span class="ident">register</span>(<span class="ident">poll</span>, <span class="ident">token</span>, <span class="ident">interest</span>, <span class="ident">opts</span>)
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}
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<span class="kw">fn</span> <span class="ident">reregister</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">poll</span>: <span class="kw-2">&</span><span class="ident">Poll</span>, <span class="ident">token</span>: <span class="ident">Token</span>, <span class="ident">interest</span>: <span class="ident">Ready</span>, <span class="ident">opts</span>: <span class="ident">PollOpt</span>)
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||
<span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span>
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||
{
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<span class="self">self</span>.<span class="ident">registration</span>.<span class="ident">reregister</span>(<span class="ident">poll</span>, <span class="ident">token</span>, <span class="ident">interest</span>, <span class="ident">opts</span>)
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||
}
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<span class="kw">fn</span> <span class="ident">deregister</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">poll</span>: <span class="kw-2">&</span><span class="ident">Poll</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
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<span class="self">self</span>.<span class="ident">registration</span>.<span class="ident">deregister</span>(<span class="ident">poll</span>)
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||
}
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||
}</pre>
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</div>
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<h2 id='required-methods' class='small-section-header'>
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Required Methods<a href='#required-methods' class='anchor'></a>
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</h2>
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<div class='methods'>
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<h3 id='tymethod.register' class='method'><span id='register.v' class='invisible'><code>fn <a href='#tymethod.register' class='fnname'>register</a>(<br> &self, <br> poll: &<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>, <br> token: <a class="struct" href="../../mio/struct.Token.html" title="struct mio::Token">Token</a>, <br> interest: <a class="struct" href="../../mio/struct.Ready.html" title="struct mio::Ready">Ready</a>, <br> opts: <a class="struct" href="../../mio/struct.PollOpt.html" title="struct mio::PollOpt">PollOpt</a><br>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><div class='docblock'><p>Register <code>self</code> with the given <code>Poll</code> instance.</p>
|
||
<p>This function should not be called directly. Use <a href="../struct.Poll.html#method.register"><code>Poll::register</code></a>
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||
instead. Implementors should handle registration by either delegating
|
||
the call to another <code>Evented</code> type or creating a <a href="../struct.Registration.html"><code>Registration</code></a>.</p>
|
||
</div><h3 id='tymethod.reregister' class='method'><span id='reregister.v' class='invisible'><code>fn <a href='#tymethod.reregister' class='fnname'>reregister</a>(<br> &self, <br> poll: &<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>, <br> token: <a class="struct" href="../../mio/struct.Token.html" title="struct mio::Token">Token</a>, <br> interest: <a class="struct" href="../../mio/struct.Ready.html" title="struct mio::Ready">Ready</a>, <br> opts: <a class="struct" href="../../mio/struct.PollOpt.html" title="struct mio::PollOpt">PollOpt</a><br>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><div class='docblock'><p>Re-register <code>self</code> with the given <code>Poll</code> instance.</p>
|
||
<p>This function should not be called directly. Use <a href="../struct.Poll.html#method.reregister"><code>Poll::reregister</code></a>
|
||
instead. Implementors should handle re-registration by either delegating
|
||
the call to another <code>Evented</code> type or calling
|
||
<a href="../struct.SetReadiness.html#method.set_readiness"><code>SetReadiness::set_readiness</code></a>.</p>
|
||
</div><h3 id='tymethod.deregister' class='method'><span id='deregister.v' class='invisible'><code>fn <a href='#tymethod.deregister' class='fnname'>deregister</a>(&self, poll: &<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code></span></h3><div class='docblock'><p>Deregister <code>self</code> from the given <code>Poll</code> instance</p>
|
||
<p>This function should not be called directly. Use <a href="../struct.Poll.html#method.deregister"><code>Poll::deregister</code></a>
|
||
instead. Implementors should handle deregistration by either delegating
|
||
the call to another <code>Evented</code> type or by dropping the <a href="../struct.Registration.html"><code>Registration</code></a>
|
||
associated with <code>self</code>.</p>
|
||
</div></div>
|
||
<h2 id='implementors' class='small-section-header'>
|
||
Implementors<a href='#implementors' class='anchor'></a>
|
||
</h2>
|
||
<ul class='item-list' id='implementors-list'>
|
||
<li><table class='table-display'><tbody><tr><td><code>impl Evented for <a class="struct" href="../../mio/struct.Registration.html" title="struct mio::Registration">Registration</a></code><td><div class='out-of-band'><a class='srclink' href='../../src/mio/poll.rs.html#1665-1677' title='goto source code'>[src]</a></div></td></tr></tbody></table></li>
|
||
<li><table class='table-display'><tbody><tr><td><code>impl<'a> Evented for <a class="struct" href="../../mio/unix/struct.EventedFd.html" title="struct mio::unix::EventedFd">EventedFd</a><'a></code><td><div class='out-of-band'><a class='srclink' href='../../src/mio/sys/unix/eventedfd.rs.html#94-106' title='goto source code'>[src]</a></div></td></tr></tbody></table></li>
|
||
<li><table class='table-display'><tbody><tr><td><code>impl Evented for <a class="struct" href="../../mio/net/struct.TcpStream.html" title="struct mio::net::TcpStream">TcpStream</a></code><td><div class='out-of-band'><a class='srclink' href='../../src/mio/net/tcp.rs.html#439-454' title='goto source code'>[src]</a></div></td></tr></tbody></table></li>
|
||
<li><table class='table-display'><tbody><tr><td><code>impl Evented for <a class="struct" href="../../mio/net/struct.TcpListener.html" title="struct mio::net::TcpListener">TcpListener</a></code><td><div class='out-of-band'><a class='srclink' href='../../src/mio/net/tcp.rs.html#657-672' title='goto source code'>[src]</a></div></td></tr></tbody></table></li>
|
||
<li><table class='table-display'><tbody><tr><td><code>impl Evented for <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><td><div class='out-of-band'><a class='srclink' href='../../src/mio/net/udp.rs.html#549-562' title='goto source code'>[src]</a></div></td></tr></tbody></table></li>
|
||
</ul><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
|
||
src="../../implementors/mio/event/trait.Evented.js">
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<h1 class="hidden">Help</h1>
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<div class="shortcuts">
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<h2>Keyboard Shortcuts</h2>
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<dl>
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<dt><kbd>?</kbd></dt>
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<dd>Show this help dialog</dd>
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<dd>Focus the search field</dd>
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<div class="infos">
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<h2>Search Tricks</h2>
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<p>
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Prefix searches with a type followed by a colon (e.g.
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<code>fn:</code>) to restrict the search to a given type.
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</p>
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|
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<p>
|
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>struct</code>, <code>enum</code>,
|
||
<code>trait</code>, <code>type</code>, <code>macro</code>,
|
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and <code>const</code>.
|
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</p>
|
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|
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<p>
|
||
Search functions by type signature (e.g.
|
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<code>vec -> usize</code> or <code>* -> vec</code>)
|
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</p>
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