| <!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/rayon-3b3b152053499ede/a07ce2e/src/collections/binary_heap.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>binary_heap.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="../../../rayon/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="../../../rayon/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="doccomment">//! This module contains the parallel iterator types for heaps |
| //! (`BinaryHeap<T>`). You will rarely need to interact with it directly |
| //! unless you have need to name one of the iterator types. |
| |
| </span><span class="kw">use </span>std::collections::BinaryHeap; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::iter::plumbing::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::iter::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::vec; |
| |
| <span class="doccomment">/// Parallel iterator over a binary heap |
| </span><span class="attribute">#[derive(Debug, Clone)] |
| </span><span class="kw">pub struct </span>IntoIter<T: Ord + Send> { |
| inner: vec::IntoIter<T>, |
| } |
| |
| <span class="kw">impl</span><T: Ord + Send> IntoParallelIterator <span class="kw">for </span>BinaryHeap<T> { |
| <span class="kw">type </span>Item = T; |
| <span class="kw">type </span>Iter = IntoIter<T>; |
| |
| <span class="kw">fn </span>into_par_iter(<span class="self">self</span>) -> <span class="self">Self</span>::Iter { |
| IntoIter { |
| inner: Vec::from(<span class="self">self</span>).into_par_iter(), |
| } |
| } |
| } |
| |
| <span class="macro">delegate_indexed_iterator! </span>{ |
| IntoIter<T> => T, |
| <span class="kw">impl</span><T: Ord + Send> |
| } |
| |
| <span class="doccomment">/// Parallel iterator over an immutable reference to a binary heap |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>Iter<<span class="lifetime">'a</span>, T: Ord + Sync> { |
| inner: vec::IntoIter<<span class="kw-2">&</span><span class="lifetime">'a </span>T>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Sync> Clone <span class="kw">for </span>Iter<<span class="lifetime">'a</span>, T> { |
| <span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self </span>{ |
| Iter { |
| inner: <span class="self">self</span>.inner.clone(), |
| } |
| } |
| } |
| |
| <span class="macro">into_par_vec! </span>{ |
| <span class="kw-2">&</span><span class="lifetime">'a </span>BinaryHeap<T> => Iter<<span class="lifetime">'a</span>, T>, |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Sync> |
| } |
| |
| <span class="macro">delegate_indexed_iterator! </span>{ |
| Iter<<span class="lifetime">'a</span>, T> => <span class="kw-2">&</span><span class="lifetime">'a </span>T, |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Sync + <span class="lifetime">'a</span>> |
| } |
| |
| <span class="comment">// `BinaryHeap` doesn't have a mutable `Iterator` |
| |
| </span><span class="doccomment">/// Draining parallel iterator that moves out of a binary heap, |
| /// but keeps the total capacity. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>Drain<<span class="lifetime">'a</span>, T: Ord + Send> { |
| heap: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>BinaryHeap<T>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Send> ParallelDrainFull <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>BinaryHeap<T> { |
| <span class="kw">type </span>Iter = Drain<<span class="lifetime">'a</span>, T>; |
| <span class="kw">type </span>Item = T; |
| |
| <span class="kw">fn </span>par_drain(<span class="self">self</span>) -> <span class="self">Self</span>::Iter { |
| Drain { heap: <span class="self">self </span>} |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Send> ParallelIterator <span class="kw">for </span>Drain<<span class="lifetime">'a</span>, T> { |
| <span class="kw">type </span>Item = T; |
| |
| <span class="kw">fn </span>drive_unindexed<C>(<span class="self">self</span>, consumer: C) -> C::Result |
| <span class="kw">where |
| </span>C: UnindexedConsumer<<span class="self">Self</span>::Item>, |
| { |
| bridge(<span class="self">self</span>, consumer) |
| } |
| |
| <span class="kw">fn </span>opt_len(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><usize> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.len()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Send> IndexedParallelIterator <span class="kw">for </span>Drain<<span class="lifetime">'a</span>, T> { |
| <span class="kw">fn </span>drive<C>(<span class="self">self</span>, consumer: C) -> C::Result |
| <span class="kw">where |
| </span>C: Consumer<<span class="self">Self</span>::Item>, |
| { |
| bridge(<span class="self">self</span>, consumer) |
| } |
| |
| <span class="kw">fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.heap.len() |
| } |
| |
| <span class="kw">fn </span>with_producer<CB>(<span class="self">self</span>, callback: CB) -> CB::Output |
| <span class="kw">where |
| </span>CB: ProducerCallback<<span class="self">Self</span>::Item>, |
| { |
| <span class="kw">super</span>::DrainGuard::new(<span class="self">self</span>.heap) |
| .par_drain(..) |
| .with_producer(callback) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Ord + Send> Drop <span class="kw">for </span>Drain<<span class="lifetime">'a</span>, T> { |
| <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">if </span>!<span class="self">self</span>.heap.is_empty() { |
| <span class="comment">// We must not have produced, so just call a normal drain to remove the items. |
| </span><span class="self">self</span>.heap.drain(); |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="rayon" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
