130 lines
7.0 KiB
HTML
130 lines
7.0 KiB
HTML
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<title>std::atomic_flag_notify_all</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_atomic_atomic_flag_notify_all 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::</span>atomic_flag_notify_all</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-atomic.html">atomic</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-atomic.html"><atomic></a></code></div>
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<td></td>
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<tbody class="t-dcl-rev t-dcl-rev-notes t-since-cxx20">
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<td rowspan="142"><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">template</span><span class="sy1"><</span> <span class="kw1">class</span> T <span class="sy1">></span><br />
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<span class="kw4">void</span> atomic_flag_notify_all<span class="br0">(</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy1"><</span>T<span class="sy1">></span><span class="sy2">*</span> object <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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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> T <span class="sy1">></span><br />
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<span class="kw4">void</span> atomic_flag_notify_all<span class="br0">(</span> <span class="kw4">volatile</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy1"><</span>T<span class="sy1">></span><span class="sy2">*</span> object <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<p>进行原子提醒操作。</p>
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<p>除阻所有被 上的原子等待操作（即 <span class="t-lc">std::atomic_flag_wait()</span> 、 <span class="t-lc">std::atomic_flag_wait_explicit()</span> 或 <span class="t-lc">std::atomic_flag::wait()</span> ）阻塞的线程，若有；否则不做任何事。</p>
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<p>等价于 <span class="t-c"><span class="mw-geshi cpp source-cpp">object<span class="sy2">-</span><span class="sy1">></span>notify_all<span class="br0">(</span><span class="br0">)</span></span></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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<td>object</td>
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<td>-</td>
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<td>指向待提醒的 atomic_flag 对象的指针</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>（无）</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>更改检测的这种形式通常比简单轮询或纯自旋锁高效。</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-atomic-atomic_flag-notify_one.html"><span class="t-lines"><span>notify_one</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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</td>
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<td>提醒至少一个在原子对象上的等待中阻塞的线程<br />
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<span class="t-mark">(<code>std::atomic_flag</code> 的公开成员函数)</span></td>
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<div><a href="cpp-atomic-atomic_flag-notify_all.html"><span class="t-lines"><span>notify_all</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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</td>
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<td>提醒所有在原子对象上的等待中阻塞的线程<br />
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<span class="t-mark">(<code>std::atomic_flag</code> 的公开成员函数)</span></td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-atomic-atomic_flag_wait.html"><span class="t-lines"><span>atomic_flag_wait</span><span>atomic_flag_wait_explicit</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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<td>阻塞线程，直至被提醒且标志更改<br />
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<span class="t-mark">(函数)</span></td>
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<div><a href="cpp-atomic-atomic_flag_notify_one.html"><span class="t-lines"><span>atomic_flag_notify_one</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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<td>提醒一个在 <code>atomic_flag_wait</code> 中阻塞的线程<br />
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<span class="t-mark">(函数)</span></td>
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