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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::jthread::</span>native_handle</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> native_handle_type native_handle<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span><br />
<span class="t-mark">(&#21487;&#36873;)</span></td>
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<p>&#36820;&#22238;&#23454;&#29616;&#23450;&#20041;&#30340;&#24213;&#23618;&#32447;&#31243;&#26564;&#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>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<p>&#22312; POSIX &#31995;&#32479;&#19978;&#29992; <code>native_handle</code> &#21551;&#29992; C++ &#32447;&#31243;&#30340;&#23454;&#26102;&#35843;&#24230;</p>
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<pre class="de1"><span class="co2">#include &lt;thread&gt;</span>
<span class="co2">#include &lt;mutex&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;chrono&gt;</span>
<span class="co2">#include &lt;cstring&gt;</span>
<span class="co2">#include &lt;pthread.h&gt;</span>
<a href="cpp-thread-mutex.html"><span class="kw2154">std::<span class="me2">mutex</span></span></a> iomutex<span class="sy4">;</span>
<span class="kw4">void</span> f<span class="br0">(</span><span class="kw4">int</span> num<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>
sched_param sch<span class="sy4">;</span>
<span class="kw4">int</span> policy<span class="sy4">;</span>
pthread_getschedparam<span class="br0">(</span>pthread_self<span class="br0">(</span><span class="br0">)</span>, <span class="sy3">&amp;</span>policy, <span class="sy3">&amp;</span>sch<span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-thread-lock_guard.html"><span class="kw2166">std::<span class="me2">lock_guard</span></span></a><span class="sy1">&lt;</span><a href="cpp-thread-mutex.html"><span class="kw2154">std::<span class="me2">mutex</span></span></a><span class="sy1">&gt;</span> lk<span class="br0">(</span>iomutex<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;Thread &quot;</span> <span class="sy1">&lt;&lt;</span> num <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; is executing at priority &quot;</span>
<span class="sy1">&lt;&lt;</span> sch.<span class="me1">sched_priority</span> <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>
<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>f, <span class="nu0">1</span><span class="br0">)</span>, t2<span class="br0">(</span>f, <span class="nu0">2</span><span class="br0">)</span><span class="sy4">;</span>
sched_param sch<span class="sy4">;</span>
<span class="kw4">int</span> policy<span class="sy4">;</span>
pthread_getschedparam<span class="br0">(</span>t1.<span class="me1">native_handle</span><span class="br0">(</span><span class="br0">)</span>, <span class="sy3">&amp;</span>policy, <span class="sy3">&amp;</span>sch<span class="br0">)</span><span class="sy4">;</span>
sch.<span class="me1">sched_priority</span> <span class="sy1">=</span> <span class="nu0">20</span><span class="sy4">;</span>
<span class="kw1">if</span> <span class="br0">(</span>pthread_setschedparam<span class="br0">(</span>t1.<span class="me1">native_handle</span><span class="br0">(</span><span class="br0">)</span>, SCHED_FIFO, <span class="sy3">&amp;</span>sch<span class="br0">)</span><span class="br0">)</span> <span class="br0">{</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;Failed to setschedparam: &quot;</span> <span class="sy1">&lt;&lt;</span> <a href="cpp-string-byte-strerror.html"><span class="kw1161">std::<span class="me2">strerror</span></span></a><span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span> <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>
<span class="br0">}</span></pre></div>
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<p>&#36755;&#20986;&#65306;</p>
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<pre class="de1">Thread 2 is executing at priority 0
Thread 1 is executing at priority 20</pre></div>
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