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<title>&#26631;&#20934;&#24211;&#22836;&#25991;&#20214; &lt;condition_variable&gt;</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">&#26631;&#20934;&#24211;&#22836;&#25991;&#20214;</span> &lt;condition_variable&gt;</h1>
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<p>&#27492;&#22836;&#25991;&#20214;&#26159;<a href="cpp-thread.html">&#32447;&#31243;&#25903;&#25345;</a>&#24211;&#30340;&#19968;&#37096;&#20998;&#12290;</p>
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<h3><span class="mw-headline" id=".E7.B1.BB">&#31867;</span></h3>
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<div><a href="cpp-thread-condition_variable.html"><span class="t-lines"><span>condition_variable</span></span></a></div>
<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>&#25552;&#20379;&#19982; <span class="t-lc"><a href="cpp-thread-unique_lock.html">std::unique_lock</a></span> &#20851;&#32852;&#30340;&#26465;&#20214;&#21464;&#37327;<br />
<span class="t-mark">(&#31867;)</span></td>
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<div><a href="cpp-thread-condition_variable_any.html"><span class="t-lines"><span>condition_variable_any</span></span></a></div>
<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>&#25552;&#20379;&#19982;&#20219;&#20309;&#38145;&#31867;&#22411;&#20851;&#32852;&#30340;&#26465;&#20214;&#21464;&#37327;<br />
<span class="t-mark">(&#31867;)</span></td>
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<div><a href="cpp-thread-cv_status.html"><span class="t-lines"><span>cv_status</span></span></a></div>
<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>&#21015;&#20986;&#26465;&#20214;&#21464;&#37327;&#19978;&#23450;&#26102;&#31561;&#24453;&#30340;&#21487;&#33021;&#32467;&#26524;<br />
<span class="t-mark">(&#26522;&#20030;)</span></td>
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<div><a href="cpp-thread-notify_all_at_thread_exit.html"><span class="t-lines"><span>notify_all_at_thread_exit</span></span></a></div>
<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>&#23433;&#25490;&#21040;&#22312;&#27492;&#32447;&#31243;&#23436;&#20840;&#32467;&#26463;&#26102;&#23545; <code>notify_all</code> &#30340;&#35843;&#29992;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<h3><span class="mw-headline" id=".E6.A6.82.E8.A6.81">&#27010;&#35201;</span></h3>
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<pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">class</span> condition_variable<span class="sy4">;</span>
<span class="kw1">class</span> condition_variable_any<span class="sy4">;</span>
<span class="kw4">void</span> notify_all_at_thread_exit<span class="br0">(</span>condition_variable<span class="sy3">&amp;</span> cond, unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span> lk<span class="br0">)</span><span class="sy4">;</span>
<span class="kw2">enum</span> <span class="kw1">class</span> cv_status <span class="br0">{</span> no_timeout, timeout <span class="br0">}</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<h4><span class="mw-headline" id=".E7.B1.BB_std::condition_variable">&#31867; <span class="t-lc"><a href="cpp-thread-condition_variable.html">std::condition_variable</a></span></span></h4>
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<pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">class</span> condition_variable <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
condition_variable<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
~condition_variable<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
condition_variable<span class="br0">(</span><span class="kw4">const</span> condition_variable<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
condition_variable<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> condition_variable<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
<span class="kw4">void</span> notify_one<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">void</span> notify_all<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">void</span> wait<span class="br0">(</span>unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lock<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">void</span> wait<span class="br0">(</span>unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lock, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Clock, <span class="kw1">class</span> Duration<span class="sy1">&gt;</span>
cv_status wait_until<span class="br0">(</span>unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lock,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">time_point</span><span class="sy1">&lt;</span>Clock, Duration<span class="sy1">&gt;</span><span class="sy3">&amp;</span> abs_time<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Clock, <span class="kw1">class</span> Duration, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait_until<span class="br0">(</span>unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lock,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">time_point</span><span class="sy1">&lt;</span>Clock, Duration<span class="sy1">&gt;</span><span class="sy3">&amp;</span> abs_time, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Rep, <span class="kw1">class</span> Period<span class="sy1">&gt;</span>
cv_status wait_for<span class="br0">(</span>unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lock,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">duration</span><span class="sy1">&lt;</span>Rep, Period<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rel_time<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Rep, <span class="kw1">class</span> Period, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait_for<span class="br0">(</span>unique_lock<span class="sy1">&lt;</span>mutex<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lock,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">duration</span><span class="sy1">&lt;</span>Rep, Period<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rel_time, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">using</span> native_handle_type <span class="sy1">=</span> <span class="coMULTI">/* &#30001;&#23454;&#29616;&#23450;&#20041; */</span><span class="sy4">;</span>
native_handle_type native_handle<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<h4><span class="mw-headline" id=".E7.B1.BB_std::condition_variable_any">&#31867; <span class="t-lc"><a href="cpp-thread-condition_variable_any.html">std::condition_variable_any</a></span></span></h4>
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<div class="cpp source-cpp">
<pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">class</span> condition_variable_any <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
condition_variable_any<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
~condition_variable_any<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
condition_variable_any<span class="br0">(</span><span class="kw4">const</span> condition_variable_any<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
condition_variable_any<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> condition_variable_any<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
<span class="kw4">void</span> notify_one<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">void</span> notify_all<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="co1">// &#19981;&#21487;&#20013;&#26029;&#31561;&#24453;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock<span class="sy1">&gt;</span>
<span class="kw4">void</span> wait<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">void</span> wait<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Clock, <span class="kw1">class</span> Duration<span class="sy1">&gt;</span>
cv_status wait_until<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">time_point</span><span class="sy1">&lt;</span>Clock, Duration<span class="sy1">&gt;</span><span class="sy3">&amp;</span> abs_time<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Clock, <span class="kw1">class</span> Duration, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait_until<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, <span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">time_point</span><span class="sy1">&lt;</span>Clock, Duration<span class="sy1">&gt;</span><span class="sy3">&amp;</span> abs_time,
Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Rep, <span class="kw1">class</span> Period<span class="sy1">&gt;</span>
cv_status wait_for<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, <span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">duration</span><span class="sy1">&lt;</span>Rep, Period<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rel_time<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Rep, <span class="kw1">class</span> Period, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait_for<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, <span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">duration</span><span class="sy1">&lt;</span>Rep, Period<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rel_time, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// &#21487;&#20013;&#26029;&#31561;&#24453;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, stop_token stoken, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Clock, <span class="kw1">class</span> Duration, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait_until<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, stop_token stoken,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">time_point</span><span class="sy1">&lt;</span>Clock, Duration<span class="sy1">&gt;</span><span class="sy3">&amp;</span> abs_time, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> Lock, <span class="kw1">class</span> Rep, <span class="kw1">class</span> Period, <span class="kw1">class</span> Pred<span class="sy1">&gt;</span>
<span class="kw4">bool</span> wait_for<span class="br0">(</span>Lock<span class="sy3">&amp;</span> lock, stop_token stoken,
<span class="kw4">const</span> chrono<span class="sy4">::</span><span class="me2">duration</span><span class="sy1">&lt;</span>Rep, Period<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rel_time, Pred pred<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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