118 lines
7.0 KiB
HTML
118 lines
7.0 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::at_quick_exit</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_utility_program_at_quick_exit skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>at_quick_exit</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-utility.html">utility</a>‎ | <a href="cpp-utility-program.html">program</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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<div>定义于头文件 <code><a href="cpp-header-cstdlib.html"><cstdlib></a></code></div>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">int</span> at_quick_exit<span class="br0">(</span> <span class="coMULTI">/*atexit-handler*/</span><span class="sy2">*</span> func <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span><br />
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<span class="kw4">int</span> at_quick_exit<span class="br0">(</span> <span class="coMULTI">/*c-atexit-handler*/</span><span class="sy2">*</span> func <span class="br0">)</span> <span class="kw1">noexcept</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-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">extern</span> <span class="st0">"C++"</span> <span class="kw1">using</span> <span class="coMULTI">/*atexit-handler*/</span> <span class="sy1">=</span> <span class="kw4">void</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// 仅用于阐释</span><br />
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<span class="kw4">extern</span> <span class="st0">"C"</span> <span class="kw1">using</span> <span class="coMULTI">/*c-atexit-handler*/</span> <span class="sy1">=</span> <span class="kw4">void</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// 仅用于阐释</span></span></div>
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<td>(2)</td>
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<p>注册 <code>func</code> 所指向的函数，使得在快速程序终止时调用它（通过 <span class="t-lc"><a href="cpp-utility-program-quick_exit.html">std::quick_exit</a></span> ）。</p>
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<p>从多个线程调用此函数不引起数据竞争。实现要支持至少注册 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="nu0">32</span></span></span> 个函数。</p>
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<p><a href="cpp-utility-program-exit.html">正常程序终止</a>时不调用注册的函数。若需要在该情况下调用函数，则必须使用 <span class="t-lc"><a href="cpp-utility-program-atexit.html">std::atexit</a></span> 。</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>func</td>
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<td>-</td>
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<td>指向要在快速程序终止时调用的函数的指针</td>
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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>若注册成功则为 <span class="t-c"><span class="mw-geshi cpp source-cpp">​<span class="nu0">0</span>​</span></span> ，否则为非零值。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
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<p>二个重载有别，因为参数 <code>func</code> 类型有别（<a href="cpp-language-language_linkage.html">语言链接</a>是其类型的一部分）。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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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-utility-program-abort.html"><span class="t-lines"><span>abort</span></span></a></div>
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</div>
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</td>
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<td>导致非正常的程序终止（不进行清理）<br />
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<span class="t-mark">(函数)</span></td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-utility-program-exit.html"><span class="t-lines"><span>exit</span></span></a></div>
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<td>导致正常的程序终止并进行清理<br />
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<span class="t-mark">(函数)</span></td>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-utility-program-atexit.html"><span class="t-lines"><span>atexit</span></span></a></div>
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</td>
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<td>注册将于调用 <span class="t-lc"><a href="cpp-utility-program-exit.html">std::exit()</a></span> 时被调用的函数<br />
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<span class="t-mark">(函数)</span></td>
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<tr class="t-dsc">
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<div><a href="cpp-utility-program-quick_exit.html"><span class="t-lines"><span>quick_exit</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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</td>
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<td>导致快速程序终止，不进行完全的清理<br />
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<span class="t-mark">(函数)</span></td>
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</tr>
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</table>
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