74 lines
4.6 KiB
HTML
74 lines
4.6 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<title>std::barrier<CompletionFunction>::wait</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_thread_barrier_wait skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::barrier<CompletionFunction>::</span>wait</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-thread.html">thread</a>‎ | <a href="cpp-thread-barrier.html">barrier</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> wait<span class="br0">(</span> arrival_token<span class="sy3">&&</span> arrival <span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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</td>
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<td class="t-dcl-nopad"></td>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<tr class="t-dcl-sep">
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<td></td>
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<td></td>
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<td></td>
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<p>若 <code>arrival</code> 与 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 的当前阶段的阶段同步点关联，则在与 <code>arrival</code> 关联的阶段同步点阻塞直至该同步点的阶段完成步骤运行。</p>
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<p>否则，若 <code>arrival</code> 与 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 的立即前一阶段的解读那同步点关联，则立即返回。</p>
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<p>否则，即若 <code>arrival</code> 与 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 的较早阶段或与 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 以外的屏障对象的任何阶段的阶段同步点关联，行为未定义。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<tr class="t-par">
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<td>arrival</td>
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<td>-</td>
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<td>由先前在同一 <code>barrier</code> 上调用 <code>arrive</code> 获得的 <code>arrival_token</code></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>（无）</p>
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<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">异常</span></h3>
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<p>错误时抛出 <span class="t-lc"><a href="cpp-error-system_error.html">std::system_error</a></span> ，带有对互斥体类型允许的错误码。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<table class="metadata plainlinks ambox mbox-small-left ambox-notice" style="">
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<tr>
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<td class="mbox-empty-cell"></td>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<div class="t-dsc-member-div">
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<div><a href="cpp-thread-barrier-arrive.html"><span class="t-lines"><span>arrive</span></span></a></div>
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</div>
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</td>
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<td>到达屏障并减少期待计数<br />
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<span class="t-mark">(公开成员函数)</span></td>
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</tr>
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