60 lines
4.3 KiB
HTML
60 lines
4.3 KiB
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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<title>std::experimental::flex_barrier::arrive_and_drop</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_flex_barrier_arrive_and_drop skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::experimental::flex_barrier::</span>arrive_and_drop</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-experimental.html">experimental</a>‎ | <a href="cpp-experimental-flex_barrier.html">flex barrier</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> arrive_and_drop<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-concurrency-ts t-mark-ts">(并发 TS)</span></td>
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<p>到达 <code>flex_barrier</code> 的同步点并从参与线程集中移除当前线程。此函数是否阻塞直至完成阶段结束是未指定的。若函数阻塞，则必须选择调用方线程执行完成阶段。</p>
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<p>若调用方线程不在此 <code>flex_barrier</code> 的参与线程集中，则行为未定义。</p>
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<p>对 <code>arrive_and_drop</code> 的调用同步于 <code>flex_barrier</code> 完成阶段的开始。若所有调用都阻塞，则完成阶段的完成同步于从该调用返回。</p>
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<p>调用 <code>arrive_and_drop</code> 和 <code>arrive_and_wait</code> 决不引入与自身或彼此的数据竞争。</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>不抛出。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">注意</span></h3>
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<p>即使每个参与线程都调用 <code>arrive_and_drop</code> ，也将执行完成阶段。</p>
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<p>线程在 <code>flex_barrier</code> 上调用 <code>arrive_and_drop</code> 后，它不能调用该屏障上的任何成员函数，除了析构函数，即使完成阶段所调用的函数对象返回正值。</p>
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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><a href="cpp-experimental-flex_barrier-arrive_and_wait.html"><span class="t-lines"><span>arrive_and_wait</span></span></a></div>
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</div>
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</td>
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<td>到达同步点并阻塞<br />
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<span class="t-mark">(公开成员函数)</span></td>
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