| <!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/registry/src/github.com-1ecc6299db9ec823/tokio-1.28.2/src/io/stdout.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>stdout.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="../../../tokio/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="../../../tokio/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 </span><span class="kw">crate</span>::io::blocking::Blocking; |
| <span class="kw">use </span><span class="kw">crate</span>::io::stdio_common::SplitByUtf8BoundaryIfWindows; |
| <span class="kw">use </span><span class="kw">crate</span>::io::AsyncWrite; |
| <span class="kw">use </span>std::io; |
| <span class="kw">use </span>std::pin::Pin; |
| <span class="kw">use </span>std::task::Context; |
| <span class="kw">use </span>std::task::Poll; |
| |
| <span class="macro">cfg_io_std! </span>{ |
| <span class="doccomment">/// A handle to the standard output stream of a process. |
| /// |
| /// Concurrent writes to stdout must be executed with care: Only individual |
| /// writes to this [`AsyncWrite`] are guaranteed to be intact. In particular |
| /// you should be aware that writes using [`write_all`] are not guaranteed |
| /// to occur as a single write, so multiple threads writing data with |
| /// [`write_all`] may result in interleaved output. |
| /// |
| /// Created by the [`stdout`] function. |
| /// |
| /// [`stdout`]: stdout() |
| /// [`AsyncWrite`]: AsyncWrite |
| /// [`write_all`]: crate::io::AsyncWriteExt::write_all() |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use tokio::io::{self, AsyncWriteExt}; |
| /// |
| /// #[tokio::main] |
| /// async fn main() -> io::Result<()> { |
| /// let mut stdout = io::stdout(); |
| /// stdout.write_all(b"Hello world!").await?; |
| /// Ok(()) |
| /// } |
| /// ``` |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>Stdout { |
| std: SplitByUtf8BoundaryIfWindows<Blocking<std::io::Stdout>>, |
| } |
| |
| <span class="doccomment">/// Constructs a new handle to the standard output of the current process. |
| /// |
| /// The returned handle allows writing to standard out from the within the |
| /// Tokio runtime. |
| /// |
| /// Concurrent writes to stdout must be executed with care: Only individual |
| /// writes to this [`AsyncWrite`] are guaranteed to be intact. In particular |
| /// you should be aware that writes using [`write_all`] are not guaranteed |
| /// to occur as a single write, so multiple threads writing data with |
| /// [`write_all`] may result in interleaved output. |
| /// |
| /// [`AsyncWrite`]: AsyncWrite |
| /// [`write_all`]: crate::io::AsyncWriteExt::write_all() |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use tokio::io::{self, AsyncWriteExt}; |
| /// |
| /// #[tokio::main] |
| /// async fn main() -> io::Result<()> { |
| /// let mut stdout = io::stdout(); |
| /// stdout.write_all(b"Hello world!").await?; |
| /// Ok(()) |
| /// } |
| /// ``` |
| </span><span class="kw">pub fn </span>stdout() -> Stdout { |
| <span class="kw">let </span>std = io::stdout(); |
| Stdout { |
| std: SplitByUtf8BoundaryIfWindows::new(Blocking::new(std)), |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(unix)] |
| </span><span class="kw">mod </span>sys { |
| <span class="attribute">#[cfg(not(tokio_no_as_fd))] |
| </span><span class="kw">use </span>std::os::unix::io::{AsFd, BorrowedFd}; |
| <span class="kw">use </span>std::os::unix::io::{AsRawFd, RawFd}; |
| |
| <span class="kw">use </span><span class="kw">super</span>::Stdout; |
| |
| <span class="kw">impl </span>AsRawFd <span class="kw">for </span>Stdout { |
| <span class="kw">fn </span>as_raw_fd(<span class="kw-2">&</span><span class="self">self</span>) -> RawFd { |
| std::io::stdout().as_raw_fd() |
| } |
| } |
| |
| <span class="attribute">#[cfg(not(tokio_no_as_fd))] |
| </span><span class="kw">impl </span>AsFd <span class="kw">for </span>Stdout { |
| <span class="kw">fn </span>as_fd(<span class="kw-2">&</span><span class="self">self</span>) -> BorrowedFd<<span class="lifetime">'_</span>> { |
| <span class="kw">unsafe </span>{ BorrowedFd::borrow_raw(<span class="self">self</span>.as_raw_fd()) } |
| } |
| } |
| } |
| |
| <span class="macro">cfg_windows! </span>{ |
| <span class="attribute">#[cfg(not(tokio_no_as_fd))] |
| </span><span class="kw">use </span><span class="kw">crate</span>::os::windows::io::{AsHandle, BorrowedHandle}; |
| <span class="kw">use </span><span class="kw">crate</span>::os::windows::io::{AsRawHandle, RawHandle}; |
| |
| <span class="kw">impl </span>AsRawHandle <span class="kw">for </span>Stdout { |
| <span class="kw">fn </span>as_raw_handle(<span class="kw-2">&</span><span class="self">self</span>) -> RawHandle { |
| std::io::stdout().as_raw_handle() |
| } |
| } |
| |
| <span class="attribute">#[cfg(not(tokio_no_as_fd))] |
| </span><span class="kw">impl </span>AsHandle <span class="kw">for </span>Stdout { |
| <span class="kw">fn </span>as_handle(<span class="kw-2">&</span><span class="self">self</span>) -> BorrowedHandle<<span class="lifetime">'_</span>> { |
| <span class="kw">unsafe </span>{ BorrowedHandle::borrow_raw(<span class="self">self</span>.as_raw_handle()) } |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>AsyncWrite <span class="kw">for </span>Stdout { |
| <span class="kw">fn </span>poll_write( |
| <span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>, |
| buf: <span class="kw-2">&</span>[u8], |
| ) -> Poll<io::Result<usize>> { |
| Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.std).poll_write(cx, buf) |
| } |
| |
| <span class="kw">fn </span>poll_flush(<span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Result</span><(), io::Error>> { |
| Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.std).poll_flush(cx) |
| } |
| |
| <span class="kw">fn </span>poll_shutdown( |
| <span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>, |
| ) -> Poll<<span class="prelude-ty">Result</span><(), io::Error>> { |
| Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.std).poll_shutdown(cx) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="tokio" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
