| <!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="Source of the Rust file `/root/.cargo/git/checkouts/incubator-teaclave-crates-c8106113f74feefc/ede1f68/mio/src/event/source.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>source.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../mio/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../mio/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use crate</span>::{Interest, Registry, Token}; |
| |
| <span class="kw">use </span>std::io; |
| |
| <span class="doccomment">/// An event source that may be registered with [`Registry`]. |
| /// |
| /// Types that implement `event::Source` can be registered with |
| /// `Registry`. Users of Mio **should not** use the `event::Source` trait |
| /// functions directly. Instead, the equivalent functions on `Registry` should |
| /// be used. |
| /// |
| /// See [`Registry`] for more details. |
| /// |
| /// [`Registry`]: ../struct.Registry.html |
| /// |
| /// # Implementing `event::Source` |
| /// |
| /// Event sources are always backed by system handles, such as sockets or other |
| /// system handles. These `event::Source`s will be monitored by the system |
| /// selector. An implementation of `Source` will almost always delegates to a |
| /// lower level handle. Examples of this are [`TcpStream`]s, or the *unix only* |
| /// [`SourceFd`]. |
| /// |
| /// [`TcpStream`]: ../net/struct.TcpStream.html |
| /// [`SourceFd`]: ../unix/struct.SourceFd.html |
| /// |
| /// # Dropping `event::Source`s |
| /// |
| /// All `event::Source`s, unless otherwise specified, need to be [deregistered] |
| /// before being dropped for them to not leak resources. This goes against the |
| /// normal drop behaviour of types in Rust which cleanup after themselves, e.g. |
| /// a `File` will close itself. However since deregistering needs access to |
| /// [`Registry`] this cannot be done while being dropped. |
| /// |
| /// [deregistered]: ../struct.Registry.html#method.deregister |
| /// |
| /// # Examples |
| /// |
| /// Implementing `Source` on a struct containing a socket: |
| /// |
| </span><span class="attribute">#[cfg_attr(all(feature = <span class="string">"os-poll"</span>, feature = <span class="string">"net"</span>), doc = <span class="string">"```"</span>)] |
| #[cfg_attr(not(all(feature = <span class="string">"os-poll"</span>, feature = <span class="string">"net"</span>)), doc = <span class="string">"```ignore"</span>)] |
| </span><span class="doccomment">/// use mio::{Interest, Registry, Token}; |
| /// use mio::event::Source; |
| /// use mio::net::TcpStream; |
| /// |
| /// use std::io; |
| /// |
| /// # #[allow(dead_code)] |
| /// pub struct MySource { |
| /// socket: TcpStream, |
| /// } |
| /// |
| /// impl Source for MySource { |
| /// fn register(&mut self, registry: &Registry, token: Token, interests: Interest) |
| /// -> io::Result<()> |
| /// { |
| /// // Delegate the `register` call to `socket` |
| /// self.socket.register(registry, token, interests) |
| /// } |
| /// |
| /// fn reregister(&mut self, registry: &Registry, token: Token, interests: Interest) |
| /// -> io::Result<()> |
| /// { |
| /// // Delegate the `reregister` call to `socket` |
| /// self.socket.reregister(registry, token, interests) |
| /// } |
| /// |
| /// fn deregister(&mut self, registry: &Registry) -> io::Result<()> { |
| /// // Delegate the `deregister` call to `socket` |
| /// self.socket.deregister(registry) |
| /// } |
| /// } |
| /// ``` |
| </span><span class="kw">pub trait </span>Source { |
| <span class="doccomment">/// Register `self` with the given `Registry` instance. |
| /// |
| /// This function should not be called directly. Use [`Registry::register`] |
| /// instead. Implementors should handle registration by delegating the call |
| /// to another `Source` type. |
| /// |
| /// [`Registry::register`]: ../struct.Registry.html#method.register |
| </span><span class="kw">fn </span>register( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| registry: <span class="kw-2">&</span>Registry, |
| token: Token, |
| interests: Interest, |
| ) -> io::Result<()>; |
| |
| <span class="doccomment">/// Re-register `self` with the given `Registry` instance. |
| /// |
| /// This function should not be called directly. Use |
| /// [`Registry::reregister`] instead. Implementors should handle |
| /// re-registration by either delegating the call to another `Source` type. |
| /// |
| /// [`Registry::reregister`]: ../struct.Registry.html#method.reregister |
| </span><span class="kw">fn </span>reregister( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| registry: <span class="kw-2">&</span>Registry, |
| token: Token, |
| interests: Interest, |
| ) -> io::Result<()>; |
| |
| <span class="doccomment">/// Deregister `self` from the given `Registry` instance. |
| /// |
| /// This function should not be called directly. Use |
| /// [`Registry::deregister`] instead. Implementors should handle |
| /// deregistration by delegating the call to another `Source` type. |
| /// |
| /// [`Registry::deregister`]: ../struct.Registry.html#method.deregister |
| </span><span class="kw">fn </span>deregister(<span class="kw-2">&mut </span><span class="self">self</span>, registry: <span class="kw-2">&</span>Registry) -> io::Result<()>; |
| } |
| |
| <span class="kw">impl</span><T> Source <span class="kw">for </span>Box<T> |
| <span class="kw">where |
| </span>T: Source + <span class="question-mark">?</span>Sized, |
| { |
| <span class="kw">fn </span>register( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| registry: <span class="kw-2">&</span>Registry, |
| token: Token, |
| interests: Interest, |
| ) -> io::Result<()> { |
| (<span class="kw-2">**</span><span class="self">self</span>).register(registry, token, interests) |
| } |
| |
| <span class="kw">fn </span>reregister( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| registry: <span class="kw-2">&</span>Registry, |
| token: Token, |
| interests: Interest, |
| ) -> io::Result<()> { |
| (<span class="kw-2">**</span><span class="self">self</span>).reregister(registry, token, interests) |
| } |
| |
| <span class="kw">fn </span>deregister(<span class="kw-2">&mut </span><span class="self">self</span>, registry: <span class="kw-2">&</span>Registry) -> io::Result<()> { |
| (<span class="kw-2">**</span><span class="self">self</span>).deregister(registry) |
| } |
| } |
| </code></pre></div> |
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