75 lines
5.4 KiB
HTML
75 lines
5.4 KiB
HTML
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<title>std::this_thread::sleep_until</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_thread_sleep_until 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::this_thread::</span>sleep_until</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-thread.html">thread</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-thread.html"><thread></a></code></div>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Clock, <span class="kw1">class</span> Duration <span class="sy1">></span><br />
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<span class="kw4">void</span> sleep_until<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-chrono-time_point.html"><span class="kw991">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">time_point</span></span></a><span class="sy1"><</span>Clock,Duration<span class="sy1">></span><span class="sy3">&</span> sleep_time <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<p>阻塞当前线程，直至抵达指定的 <code>sleep_time</code> 。</p>
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<p><code>Clock</code> 必须符合<a href="cpp-named_req-Clock.html"><span style="font-style:italic">时钟</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(Clock)</span></a> 要求。<span class="t-rev-inl t-since-cxx20"><span>若 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">is_clock_v</span><span class="sy1"><</span>Clock<span class="sy1">></span></span></span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> 则程序为非良构。</span> <span><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></span></span></p>
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<p>标准推荐使用绑定到 <code>sleep_time</code> 的时钟，该情况下可以计入时钟的调整。从而在调用时刻，阻塞的时长可以，但也可以不，小于或大于 <span class="t-c"><span class="mw-geshi cpp source-cpp">sleep_time <span class="sy2">-</span> Clock<span class="sy4">::</span><span class="me2">now</span><span class="br0">(</span><span class="br0">)</span></span></span> 。这取决于调整的方向以及实现是否尊重它。函数亦可能由于调度或资源纠纷延迟，而阻塞长于到抵达 <code>sleep_time</code> 之后。</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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<td>sleep_time</td>
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<td>-</td>
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<td>要阻塞到的时间</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>任何 <code>Clock</code> 或 <code>Duration</code> 可能抛出的异常（标准库提供的时钟和时长决不抛出）</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-thread-sleep_for.html"><span class="t-lines"><span>sleep_for</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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</div>
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</td>
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<td>使当前线程的执行停止指定的时间段<br />
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<span class="t-mark">(函数)</span></td>
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