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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `signal` fn in crate `tokio`."><meta name="keywords" content="rust, rustlang, rust-lang, signal"><title>tokio::signal::unix::signal - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled ><script id="default-settings"></script><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../../favicon.svg">
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<a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Function <a href="../../index.html">tokio</a>::<wbr><a href="../index.html">signal</a>::<wbr><a href="index.html">unix</a>::<wbr><a class="fn" href="">signal</a></span><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span><a class="srclink" href="../../../src/tokio/signal/unix.rs.html#354-360" title="goto source code">[src]</a></span></h1><pre class="rust fn">pub fn signal(kind: <a class="struct" href="../../../tokio/signal/unix/struct.SignalKind.html" title="struct tokio::signal::unix::SignalKind">SignalKind</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="struct" href="../../../tokio/signal/unix/struct.Signal.html" title="struct tokio::signal::unix::Signal">Signal</a>&gt;</pre><div class="docblock"><p>Creates a new stream which will receive notifications when the current
process receives the specified signal <code>kind</code>.</p>
<p>This function will create a new stream which binds to the default reactor.
The <code>Signal</code> stream is an infinite stream which will receive
notifications whenever a signal is received. More documentation can be
found on <code>Signal</code> itself, but to reiterate:</p>
<ul>
<li>Signals may be coalesced beyond what the kernel already does.</li>
<li>Once a signal handler is registered with the process the underlying
libc signal handler is never unregistered.</li>
</ul>
<p>A <code>Signal</code> stream can be created for a particular signal number
multiple times. When a signal is received then all the associated
channels will receive the signal notification.</p>
<h1 id="errors" class="section-header"><a href="#errors">Errors</a></h1>
<ul>
<li>If the lower-level C functions fail for some reason.</li>
<li>If the previous initialization of this specific signal failed.</li>
<li>If the signal is one of
<a href="../../../signal_hook_registry/fn.register.html#panics"><code>signal_hook::FORBIDDEN</code></a></li>
</ul>
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