82 lines
3.8 KiB
HTML
82 lines
3.8 KiB
HTML
<!DOCTYPE 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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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>std::get_new_handler</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_memory_new_get_new_handler skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>get_new_handler</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-memory.html">memory</a>‎ | <a href="cpp-memory-new.html">new</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>定义于头文件 <code><a href="cpp-header-new.html"><new></a></code></div>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp"><a href="cpp-memory-new-new_handler.html"><span class="kw697">std::<span class="me2">new_handler</span></span></a> get_new_handler<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</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>返回当前安装的 new 处理函数，它可以是空指针值。</p>
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<p>此函数是线程安全的。先前对 <span class="t-lc"><a href="cpp-memory-new-set_new_handler.html">std::set_new_handler</a></span> 的调用<i>同步于</i>（见 <span class="t-lc"><a href="cpp-atomic-memory_order.html">std::memory_order</a></span> ）对 <code>std::get_new_handler</code> 的后继调用。</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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<p>（无）</p>
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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>当前安装的 <i>new 处理函数</i>，它可以是空指针值。</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-memory-new-operator_new.html"><span class="t-lines"><span>operator new</span><span>operator new[]</span></span></a></div>
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</td>
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<td>分配函数<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-memory-new-set_new_handler.html"><span class="t-lines"><span>set_new_handler</span></span></a></div>
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</div>
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</td>
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<td>注册一个 new 处理函数<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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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-memory-new-new_handler.html"><span class="t-lines"><span>new_handler</span></span></a></div>
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</div>
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</td>
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<td>new 处理函数的函数指针类型<br />
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<span class="t-mark">(typedef)</span></td>
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</table>
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</div>
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<div class="visualClear"></div>
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</div>
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</body>
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</html>
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