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4.1 KiB
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8 lines
4.1 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="API documentation for the Rust `dsb` fn in crate `cortex_m`."><meta name="keywords" content="rust, rustlang, rust-lang, dsb"><title>cortex_m::asm::dsb - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script></head><body class="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><div class="sidebar-elems"><p class='location'><a href='../index.html'>cortex_m</a>::<wbr><a href='index.html'>asm</a></p><script>window.sidebarCurrent = {name: 'dsb', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/cortex_m/asm.rs.html#180-198' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='../index.html'>cortex_m</a>::<wbr><a href='index.html'>asm</a>::<wbr><a class="fn" href=''>dsb</a></span></h1><pre class='rust fn'>pub fn dsb()</pre><div class='docblock'><p>Data Synchronization Barrier</p>
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<p>Acts as a special kind of memory barrier. No instruction in program order after this instruction
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can execute until this instruction completes. This instruction completes only when both:</p>
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<ul>
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<li>any explicit memory access made before this instruction is complete</li>
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<li>all cache and branch predictor maintenance operations before this instruction complete</li>
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</ul>
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