58 lines
3.2 KiB
HTML
58 lines
3.2 KiB
HTML
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<title>std::experimental::barrier::barrier</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::experimental::barrier::</span>barrier</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="kw1">explicit</span> barrier<span class="br0">(</span> <a href="cpp-types-ptrdiff_t.html"><span class="kw101">std::<span class="me2">ptrdiff_t</span></span></a> num_threads <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
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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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<div><span class="mw-geshi cpp source-cpp">barrier<span class="br0">(</span> <span class="kw4">const</span> barrier <span class="sy3">&</span> <span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span></span></div>
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<td>(2)</td>
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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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<div class="t-li1"><span class="t-li">1)</span> 构造 <code>num_threads</code> 个参与线程的 <code>barrier</code> 。参与线程的集合是首先到达同步点的 <code>num_threads</code> 个线程。</div>
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<div class="t-li1"><span class="t-li">2)</span> 复制构造函数被删除； <code>barrier</code> 不可复制。</div>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<td>num_threads</td>
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<td>-</td>
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<td>屏障的参与线程数；必须为非负</td>
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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>若 <code>num_threads</code> 为零，则参与线程为空，而 <code>barrier</code> 只能被销毁。</p>
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