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hustoj/web/cppreference-zh/chmhelp/cpp-thread-jthread-get_id.html
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<title>std::jthread::get_id</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::jthread::</span>get_id</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-thread.html">thread</a>&lrm; | <a href="cpp-thread-jthread.html">jthread</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="br0">[</span><span class="br0">[</span>nodiscard<span class="br0">]</span><span class="br0">]</span> std<span class="sy4">::</span><span class="me2">jthread</span><span class="sy4">::</span><span class="me2">id</span> get_id<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<p>&#36820;&#22238;&#26631;&#35782;&#19982; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> &#20851;&#32852;&#30340;&#32447;&#31243;&#30340; <span class="t-lc">std::jthread::id</span> &#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#26631;&#35782;&#19982; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> &#20851;&#32852;&#30340;&#32447;&#31243;&#30340; <span class="t-lc">std::jthread::id</span> &#31867;&#22411;&#20540;&#12290;&#33509;&#26080;&#20851;&#32852;&#30340;&#32447;&#31243;&#65292;&#21017;&#36820;&#22238;&#40664;&#35748;&#26500;&#36896;&#30340; <span class="t-lc">std::jthread::id</span> &#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<pre class="de1"><span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;thread&gt;</span>
<span class="co2">#include &lt;chrono&gt;</span>
<span class="kw4">void</span> foo<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-thread-sleep_for.html"><span class="kw2149">std::<span class="me2">this_thread</span><span class="sy4">::</span><span class="me2">sleep_for</span></span></a><span class="br0">(</span><a href="cpp-chrono-duration.html"><span class="kw997">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">seconds</span></span></a><span class="br0">(</span><span class="nu0">1</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
std<span class="sy4">::</span><span class="me2">jthread</span> t1<span class="br0">(</span>foo<span class="br0">)</span><span class="sy4">;</span>
std<span class="sy4">::</span><span class="me2">jthread</span><span class="sy4">::</span><span class="me2">id</span> t1_id <span class="sy1">=</span> t1.<span class="me1">get_id</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
std<span class="sy4">::</span><span class="me2">jthread</span> t2<span class="br0">(</span>foo<span class="br0">)</span><span class="sy4">;</span>
std<span class="sy4">::</span><span class="me2">jthread</span><span class="sy4">::</span><span class="me2">id</span> t2_id <span class="sy1">=</span> t2.<span class="me1">get_id</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;t1&#39;s id: &quot;</span> <span class="sy1">&lt;&lt;</span> t1_id <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;t2&#39;s id: &quot;</span> <span class="sy1">&lt;&lt;</span> t2_id <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<p>&#21487;&#33021;&#30340;&#36755;&#20986;&#65306;</p>
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<pre class="de1">t1&#39;s id: 0x35a7210f
t2&#39;s id: 0x35a311c4</pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-thread-thread-id.html"><span class="t-lines"><span>id</span></span></a></div>
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<td>&#34920;&#31034;&#32447;&#31243;&#30340; <i>id</i><br />
<span class="t-mark">(<code>std::thread</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#31867;)</span></td>
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<div><a href="cpp-thread-jthread-joinable.html"><span class="t-lines"><span>joinable</span></span></a></div>
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<td>&#26816;&#26597;&#32447;&#31243;&#26159;&#21542;&#21487;&#21512;&#24182;&#65292;&#21363;&#28508;&#22312;&#22320;&#36816;&#34892;&#20110;&#24179;&#34892;&#29615;&#22659;&#20013;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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