| <!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/loom/std/mod.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>mod.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="attribute">#![cfg_attr(any(not(feature = <span class="string">"full"</span>), loom), allow(unused_imports, dead_code))] |
| |
| </span><span class="kw">mod </span>atomic_u16; |
| <span class="kw">mod </span>atomic_u32; |
| <span class="kw">mod </span>atomic_u64; |
| <span class="kw">mod </span>atomic_usize; |
| <span class="kw">mod </span>mutex; |
| <span class="attribute">#[cfg(feature = <span class="string">"parking_lot"</span>)] |
| </span><span class="kw">mod </span>parking_lot; |
| <span class="kw">mod </span>unsafe_cell; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>cell { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">super</span>::unsafe_cell::UnsafeCell; |
| } |
| |
| <span class="attribute">#[cfg(any( |
| feature = <span class="string">"net"</span>, |
| feature = <span class="string">"process"</span>, |
| feature = <span class="string">"signal"</span>, |
| feature = <span class="string">"sync"</span>, |
| ))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>future { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::sync::AtomicWaker; |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>hint { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>std::hint::spin_loop; |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>rand { |
| <span class="kw">use </span>std::collections::hash_map::RandomState; |
| <span class="kw">use </span>std::hash::{BuildHasher, Hash, Hasher}; |
| <span class="kw">use </span>std::sync::atomic::AtomicU32; |
| <span class="kw">use </span>std::sync::atomic::Ordering::Relaxed; |
| |
| <span class="kw">static </span>COUNTER: AtomicU32 = AtomicU32::new(<span class="number">1</span>); |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>seed() -> u64 { |
| <span class="kw">let </span>rand_state = RandomState::new(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>hasher = rand_state.build_hasher(); |
| |
| <span class="comment">// Hash some unique-ish data to generate some new state |
| </span>COUNTER.fetch_add(<span class="number">1</span>, Relaxed).hash(<span class="kw-2">&mut </span>hasher); |
| |
| <span class="comment">// Get the seed |
| </span>hasher.finish() |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>sync { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>std::sync::{Arc, Weak}; |
| |
| <span class="comment">// Below, make sure all the feature-influenced types are exported for |
| // internal use. Note however that some are not _currently_ named by |
| // consuming code. |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"parking_lot"</span>)] |
| #[allow(unused_imports)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::loom::std::parking_lot::{ |
| Condvar, Mutex, MutexGuard, RwLock, RwLockReadGuard, WaitTimeoutResult, |
| }; |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"parking_lot"</span>))] |
| #[allow(unused_imports)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>std::sync::{Condvar, MutexGuard, RwLock, RwLockReadGuard, WaitTimeoutResult}; |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"parking_lot"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::loom::std::mutex::Mutex; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>atomic { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::loom::std::atomic_u16::AtomicU16; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::loom::std::atomic_u32::AtomicU32; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::loom::std::atomic_u64::{AtomicU64, StaticAtomicU64}; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::loom::std::atomic_usize::AtomicUsize; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>std::sync::atomic::{fence, AtomicBool, AtomicPtr, AtomicU8, Ordering}; |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>sys { |
| <span class="attribute">#[cfg(feature = <span class="string">"rt-multi-thread"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>num_cpus() -> usize { |
| <span class="kw">const </span>ENV_WORKER_THREADS: <span class="kw-2">&</span>str = <span class="string">"TOKIO_WORKER_THREADS"</span>; |
| |
| <span class="kw">match </span>std::env::var(ENV_WORKER_THREADS) { |
| <span class="prelude-val">Ok</span>(s) => { |
| <span class="kw">let </span>n = s.parse().unwrap_or_else(|e| { |
| <span class="macro">panic!</span>( |
| <span class="string">"\"{}\" must be usize, error: {}, value: {}"</span>, |
| ENV_WORKER_THREADS, e, s |
| ) |
| }); |
| <span class="macro">assert!</span>(n > <span class="number">0</span>, <span class="string">"\"{}\" cannot be set to 0"</span>, ENV_WORKER_THREADS); |
| n |
| } |
| <span class="prelude-val">Err</span>(std::env::VarError::NotPresent) => usize::max(<span class="number">1</span>, num_cpus::get()), |
| <span class="prelude-val">Err</span>(std::env::VarError::NotUnicode(e)) => { |
| <span class="macro">panic!</span>( |
| <span class="string">"\"{}\" must be valid unicode, error: {:?}"</span>, |
| ENV_WORKER_THREADS, e |
| ) |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"rt-multi-thread"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>num_cpus() -> usize { |
| <span class="number">1 |
| </span>} |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">mod </span>thread { |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>yield_now() { |
| std::hint::spin_loop(); |
| } |
| |
| <span class="attribute">#[allow(unused_imports)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>std::thread::{ |
| current, panicking, park, park_timeout, sleep, spawn, AccessError, Builder, JoinHandle, |
| LocalKey, <span class="prelude-ty">Result</span>, Thread, ThreadId, |
| }; |
| } |
| </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> |
