60 lines
4.2 KiB
HTML
60 lines
4.2 KiB
HTML
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<title>std::experimental::barrier::arrive_and_wait</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_barrier_arrive_and_wait 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::barrier::</span>arrive_and_wait</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-barrier.html">barrier</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> arrive_and_wait<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>阻塞并到达屏障的同步点。</p>
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<p>若调用方线程不在此 <code>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_wait</code> 的调用同步于 <code>barrier</code> 的完成阶段的开始。完成阶段的完成同步于从调用返回。</p>
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<p>对 <code>arrive_and_drop</code> 和 <code>arrive_and_wait</code> 的调用决不引入与其自身或与彼此间的数据竞争。</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>线程立即在从此调用返回时，调用 <code>arrive_and_wait()</code> 或 <code>arrive_and_drop()</code> 是安全的。不需要确保在一个线程再次调用它时，所有线程都已退出 <code>arrive_and_wait()</code> 。</p>
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<p>为 <code>num_threads</code> 个线程构造的 <code>barrier</code> 的参与线程集是首 <code>num_threads</code> 个到达其同步点的线程。此集合不在循环间更改，除非线程由于 <code>arrive_and_drop()</code> 调用被移除出集合。</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>不抛出异常。</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 class="t-dsc-member-div">
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<div><a href="cpp-experimental-barrier-arrive_and_drop.html"><span class="t-lines"><span>arrive_and_drop</span></span></a></div>
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<td>到达同步点，并从参与线程集中移除当前线程<br />
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<span class="t-mark">(公开成员函数)</span></td>
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