85 lines
6.1 KiB
HTML
85 lines
6.1 KiB
HTML
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<title>std::stop_source::stop_source</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_thread_stop_source_stop_source 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::stop_source::</span>stop_source</h1>
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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-stop_source.html">stop source</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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<table class="t-dcl-begin">
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<div><span class="mw-geshi cpp source-cpp">stop_source<span class="br0">(</span><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-cxx20">(C++20 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> stop_source<span class="br0">(</span> std<span class="sy4">::</span><span class="me2">nostopstate_t</span> nss <span class="br0">)</span> <span class="kw1">noexcept</span><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-cxx20">(C++20 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp">stop_source<span class="br0">(</span> <span class="kw4">const</span> stop_source<span class="sy3">&</span> other <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp">stop_source<span class="br0">(</span> stop_source<span class="sy3">&&</span> other <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(4)</td>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<td></td>
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<td></td>
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<p>构造新的 <code>stop_source</code> 对象。</p>
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<div class="t-li1"><span class="t-li">1)</span> 构造拥有新停止状态的 <code>stop_source</code> 。</div>
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<div class="t-li1"><span class="t-li">2)</span> 构造无关联停止状态的空 <code>stop_source</code> 。</div>
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<div class="t-li1"><span class="t-li">3)</span> 复制构造函数。构造拥有与 <code>other</code> 相同的关联停止状态的 <code>stop_source</code> 。</div>
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<div class="t-li1"><span class="t-li">4)</span> 移动构造函数。构造拥有与 <code>other</code> 相同的关联停止状态的 <code>stop_source</code> ；将 <code>other</code> 设为空。</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>nss</td>
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<td>-</td>
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<td>用于构造空 <code>stop_source</code> 的 <code>std::nostopstate_t</code> 占位对象</td>
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</tr>
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<tr class="t-par">
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<td>other</td>
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<td>-</td>
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<td>用于构造此 <code>stop_source</code> 对象的另一 <code>stop_source</code> 对象</td>
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<h3><span class="mw-headline" id=".E5.90.8E.E6.9D.A1.E4.BB.B6">后条件</span></h3>
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<div class="t-li1"><span class="t-li">1)</span> <span class="t-lc">stop_possible()</span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> 而 <span class="t-lc">stop_requested()</span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span></div>
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<div class="t-li1"><span class="t-li">2)</span> <span class="t-lc">stop_possible()</span> 与 <span class="t-lc">stop_requested()</span> 均为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span></div>
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<div class="t-li1"><span class="t-li">3)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 与 <code>other</code> 共享同一关联停止状态且比较相等</div>
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<div class="t-li1"><span class="t-li">4)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 拥有 <code>other</code> 先前的关联停止状态，而 <span class="t-c"><span class="mw-geshi cpp source-cpp">other.<span class="me1">stop_possible</span><span class="br0">(</span><span class="br0">)</span></span></span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span></div>
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<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">异常</span></h3>
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<div class="t-li1"><span class="t-li">1)</span> 若不能为停止状态分配内存则为 <span class="t-lc"><a href="cpp-memory-new-bad_alloc.html">std::bad_alloc</a></span></div>
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