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15 lines
5.2 KiB
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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="Timer event source"><title>calloop::timer - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-42caa33d.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="calloop" data-themes="" data-resource-suffix="" data-rustdoc-version="1.84.0 (9fc6b4312 2025-01-07)" data-channel="1.84.0" data-search-js="search-92e6798f.js" data-settings-js="settings-0f613d39.js" ><script src="../../static.files/storage-59e33391.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../calloop/index.html">calloop</a><span class="version">0.13.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module timer</a></h2><h3><a href="#structs">Module Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#enums" title="Enums">Enums</a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="../index.html">In crate calloop</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="../index.html">calloop</a></span><h1>Module <span>timer</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/calloop/sources/timer.rs.html#1-647">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Timer event source</p>
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<p>The <a href="struct.Timer.html" title="struct calloop::timer::Timer"><code>Timer</code></a> is an event source that will fire its event after a certain amount of time
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specified at creation. Its timing is tracked directly by the event loop core logic, and it does
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not consume any system resource.</p>
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<p>As of calloop v0.11.0, the event loop always uses high-precision timers. However, the timer
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precision varies between operating systems; for instance, the scheduler granularity on Windows
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is about 16 milliseconds. If you need to rely on good precision timers in general, you may need
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to enable realtime features of your OS to ensure your thread is quickly woken up by the system
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scheduler.</p>
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<p>The provided event is an <a href="https://doc.rust-lang.org/1.84.0/std/time/struct.Instant.html" title="struct std::time::Instant"><code>Instant</code></a> representing the deadline for which this timer has fired
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(which can be earlier than the current time depending on the event loop congestion).</p>
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<p>The callback associated with this event source is expected to return a <a href="enum.TimeoutAction.html" title="enum calloop::timer::TimeoutAction"><code>TimeoutAction</code></a>, which
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can be used to implement self-repeating timers by telling calloop to reprogram the same timer
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for a later timeout after it has fired.</p>
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</div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><ul class="item-table"><li><div class="item-name"><a class="struct" href="struct.TimeoutFuture.html" title="struct calloop::timer::TimeoutFuture">Timeout<wbr>Future</a></div><div class="desc docblock-short">A future that resolves once a certain timeout is expired</div></li><li><div class="item-name"><a class="struct" href="struct.Timer.html" title="struct calloop::timer::Timer">Timer</a></div><div class="desc docblock-short">A timer event source</div></li></ul><h2 id="enums" class="section-header">Enums<a href="#enums" class="anchor">§</a></h2><ul class="item-table"><li><div class="item-name"><a class="enum" href="enum.TimeoutAction.html" title="enum calloop::timer::TimeoutAction">Timeout<wbr>Action</a></div><div class="desc docblock-short">Action to reschedule a timeout if necessary</div></li></ul></section></div></main></body></html> |