282 lines
26 KiB
HTML
282 lines
26 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::thread::thread</title>
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<link rel="stylesheet" href="ext.css" />
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<link rel="stylesheet" href="site_modules.css" />
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</head>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_thread_thread_thread 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::thread::</span>thread</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-thread.html">thread</a>‎ | <a href="cpp-thread-thread.html">thread</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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<tbody>
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<tr class="t-dcl t-since-cxx11">
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<td>
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<div><span class="mw-geshi cpp source-cpp">thread<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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</tr>
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<tr class="t-dcl t-since-cxx11">
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<div><span class="mw-geshi cpp source-cpp">thread<span class="br0">(</span> thread<span class="sy3">&&</span> other <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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</td>
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<td>(2)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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</tr>
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<tr class="t-dcl t-since-cxx11">
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<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> Function, <span class="kw1">class</span>... <span class="me1">Args</span> <span class="sy1">></span><br />
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<span class="kw1">explicit</span> thread<span class="br0">(</span> Function<span class="sy3">&&</span> f, Args<span class="sy3">&&</span>... <span class="me1">args</span> <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(3)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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</tr>
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<tr class="t-dcl t-since-cxx11">
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<td>
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<div><span class="mw-geshi cpp source-cpp">thread<span class="br0">(</span> <span class="kw4">const</span> thread<span class="sy3">&</span> <span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span></span></div>
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</td>
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<td>(4)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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</tr>
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<tr class="t-dcl-sep">
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<td></td>
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<td></td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<p>构造新的 <code>thread</code> 对象。</p>
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<div class="t-li1"><span class="t-li">1)</span> 构造不表示线程的新 <code>thread</code> 对象。</div>
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<div class="t-li1"><span class="t-li">2)</span> 移动构造函数。构造表示曾为 <code>other</code> 所表示的执行线程的 <code>thread</code> 对象。此调用后 <code>other</code> 不再表示执行线程。</div>
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<div class="t-li1"><span class="t-li">3)</span> 构造新的 <code>std::thread</code> 对象并将它与执行线程关联。新的执行线程开始执行 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="coMULTI">/*INVOKE*/</span><span class="br0">(</span>std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>f_copy<span class="br0">)</span>, std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>args_copy<span class="br0">)</span>...<span class="br0">)</span></span></span> ，其中
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<ul>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="coMULTI">/*INVOKE*/</span></span></span> 进行<a href="cpp-named_req-Callable.html"><span style="font-style:italic">可调用</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(Callable)</span></a> 中指定的 <code><i>INVOKE</i></code> 操作<span class="t-rev-inl t-since-cxx17"><span>，这能由 <span class="t-lc"><a href="cpp-utility-functional-invoke.html">std::invoke</a></span> 进行</span> <span><span class="t-mark-rev t-since-cxx17">(C++17 起)</span></span></span>，而</li>
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<li><code>f_copy</code> 是类型为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-types-decay.html"><span class="kw628">std::<span class="me2">decay</span></span></a><span class="sy1"><</span>Function<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span></span></span> 并从 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-utility-forward.html"><span class="kw1117">std::<span class="me2">forward</span></span></a><span class="sy1"><</span>Function<span class="sy1">></span><span class="br0">(</span>f<span class="br0">)</span></span></span> 构造的对象，而</li>
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<li><code>args_copy...</code> 是类型为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-types-decay.html"><span class="kw628">std::<span class="me2">decay</span></span></a><span class="sy1"><</span>Args<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span>...</span></span> 并从 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-utility-forward.html"><span class="kw1117">std::<span class="me2">forward</span></span></a><span class="sy1"><</span>Args<span class="sy1">></span><span class="br0">(</span>args<span class="br0">)</span>...</span></span> 构造的对象。</li>
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</ul>
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这些对象的构造在调用方的环境执行，故而任何求值和复制/移动参数中抛出的异常被抛到当前线程，而不会开始新线程。若任何构造或 <code><i>INVOKE</i></code> 操作非法则程序非良构。</div>
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<div class="t-li1"><span class="t-li"></span> 若 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-types-decay.html"><span class="kw628">std::<span class="me2">decay</span></span></a><span class="sy1"><</span>Function<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span></span></span> 与 <code>thread</code> 为同一类型，则此构造函数不参与重载决议。</div>
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<div class="t-li1"><span class="t-li"></span> 构造函数的调用完成<i>同步于</i>（定义于 <span class="t-lc"><a href="cpp-atomic-memory_order.html">std::memory_order</a></span> ）新的执行线程上 <i>f</i> 副本的调用开始。</div>
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<div class="t-li1"><span class="t-li">4)</span> 复制构造函数被删除； <code>thread</code> 不可复制。没有二个 <code>std::thread</code> 对象可表示同一执行线程。</div>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<tr class="t-par">
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<td>other</td>
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<td>-</td>
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<td>用以构造此 thread 的另一 thread 对象</td>
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</tr>
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<tr class="t-par">
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<td>f</td>
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<td>-</td>
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<td>执行于新线程的<a href="cpp-named_req-Callable.html"><span style="font-style:italic">可调用</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(Callable)</span></a></td>
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</tr>
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<tr class="t-par">
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<td>args...</td>
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<td>-</td>
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<td>传递给新函数的参数</td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E5.90.8E.E6.9D.A1.E4.BB.B6">后条件</span></h3>
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<div class="t-li1"><span class="t-li">1)</span> <span class="t-lc"><a href="cpp-thread-thread-get_id.html">get_id()</a></span> 等于 <span class="t-lc"><a href="cpp-thread-thread-id.html">std::thread::id()</a></span> （即 <span class="t-lc"><a href="cpp-thread-thread-joinable.html">joinable</a></span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> ）</div>
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<div class="t-li1"><span class="t-li">2)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">other.<span class="me1">get_id</span><span class="br0">(</span><span class="br0">)</span></span></span> 等于 <span class="t-lc"><a href="cpp-thread-thread-id.html">std::thread::id()</a></span> 而 <span class="t-lc"><a href="cpp-thread-thread-get_id.html">get_id()</a></span> 返回构造开始前 <span class="t-c"><span class="mw-geshi cpp source-cpp">other.<span class="me1">get_id</span><span class="br0">(</span><span class="br0">)</span></span></span> 的值</div>
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<div class="t-li1"><span class="t-li">3)</span> <span class="t-lc"><a href="cpp-thread-thread-get_id.html">get_id()</a></span> 不等于 <span class="t-lc"><a href="cpp-thread-thread-id.html">std::thread::id()</a></span> （即 <span class="t-lc"><a href="cpp-thread-thread-joinable.html">joinable</a></span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> ）</div>
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<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">异常</span></h3>
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<div class="t-li1"><span class="t-li">3)</span> 若不能开始线程则抛出 <span class="t-lc"><a href="cpp-error-system_error.html">std::system_error</a></span> 。异常可能表示错误条件 <code>std::errc::resource_unavailable_try_again</code> 或另一实现限定的错误条件。</div>
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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>移动或按值复制线程函数的参数。若需要传递引用参数给线程函数，则必须包装它（例如用 <span class="t-lc"><a href="cpp-utility-functional-ref.html">std::ref</a></span> 或 <span class="t-lc"><a href="cpp-utility-functional-ref.html">std::cref</a></span> ）。</p>
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<p>忽略来自函数的任何返回值。若函数抛异常，则调用 <span class="t-lc"><a href="cpp-error-terminate.html">std::terminate</a></span> 。为将返回值或异常传递回调用方线程，可使用 <span class="t-lc"><a href="cpp-thread-promise.html">std::promise</a></span> 或 <span class="t-lc"><a href="cpp-thread-async.html">std::async</a></span> 。</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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<div class="t-example">
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<div class="t-example-live-link"></div>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="cpp source-cpp">
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<pre class="de1"><span class="co2">#include <iostream></span>
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<span class="co2">#include <utility></span>
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<span class="co2">#include <thread></span>
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<span class="co2">#include <chrono></span>
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<span class="kw4">void</span> f1<span class="br0">(</span><span class="kw4">int</span> n<span class="br0">)</span>
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<span class="br0">{</span>
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<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> i <span class="sy1"><</span> <span class="nu0">5</span><span class="sy4">;</span> <span class="sy2">++</span>i<span class="br0">)</span> <span class="br0">{</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Thread 1 executing<span class="es1">\n</span>"</span><span class="sy4">;</span>
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<span class="sy2">++</span>n<span class="sy4">;</span>
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<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="kw996">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">milliseconds</span></span></a><span class="br0">(</span><span class="nu0">10</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span>
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<span class="br0">}</span>
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<span class="kw4">void</span> f2<span class="br0">(</span><span class="kw4">int</span><span class="sy3">&</span> n<span class="br0">)</span>
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<span class="br0">{</span>
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<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> i <span class="sy1"><</span> <span class="nu0">5</span><span class="sy4">;</span> <span class="sy2">++</span>i<span class="br0">)</span> <span class="br0">{</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Thread 2 executing<span class="es1">\n</span>"</span><span class="sy4">;</span>
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<span class="sy2">++</span>n<span class="sy4">;</span>
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<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="kw996">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">milliseconds</span></span></a><span class="br0">(</span><span class="nu0">10</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span>
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<span class="br0">}</span>
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<span class="kw1">class</span> foo
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<span class="br0">{</span>
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<span class="kw1">public</span><span class="sy4">:</span>
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<span class="kw4">void</span> bar<span class="br0">(</span><span class="br0">)</span>
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<span class="br0">{</span>
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<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> i <span class="sy1"><</span> <span class="nu0">5</span><span class="sy4">;</span> <span class="sy2">++</span>i<span class="br0">)</span> <span class="br0">{</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Thread 3 executing<span class="es1">\n</span>"</span><span class="sy4">;</span>
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<span class="sy2">++</span>n<span class="sy4">;</span>
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<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="kw996">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">milliseconds</span></span></a><span class="br0">(</span><span class="nu0">10</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span>
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<span class="br0">}</span>
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<span class="kw4">int</span> n <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
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<span class="br0">}</span><span class="sy4">;</span>
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<span class="kw1">class</span> baz
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<span class="br0">{</span>
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<span class="kw1">public</span><span class="sy4">:</span>
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<span class="kw4">void</span> operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span><span class="br0">)</span>
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<span class="br0">{</span>
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<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> i <span class="sy1"><</span> <span class="nu0">5</span><span class="sy4">;</span> <span class="sy2">++</span>i<span class="br0">)</span> <span class="br0">{</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Thread 4 executing<span class="es1">\n</span>"</span><span class="sy4">;</span>
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<span class="sy2">++</span>n<span class="sy4">;</span>
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<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="kw996">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">milliseconds</span></span></a><span class="br0">(</span><span class="nu0">10</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span>
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<span class="br0">}</span>
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<span class="kw4">int</span> n <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
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<span class="br0">}</span><span class="sy4">;</span>
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<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
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<span class="br0">{</span>
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<span class="kw4">int</span> n <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
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foo f<span class="sy4">;</span>
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baz b<span class="sy4">;</span>
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<a href="cpp-thread-thread.html"><span class="kw2146">std::<span class="me2">thread</span></span></a> t1<span class="sy4">;</span> <span class="co1">// t1 不是线程</span>
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<a href="cpp-thread-thread.html"><span class="kw2146">std::<span class="me2">thread</span></span></a> t2<span class="br0">(</span>f1, n <span class="sy2">+</span> <span class="nu0">1</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// 按值传递</span>
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<a href="cpp-thread-thread.html"><span class="kw2146">std::<span class="me2">thread</span></span></a> t3<span class="br0">(</span>f2, <a href="cpp-utility-functional-ref.html"><span class="kw1069">std::<span class="me2">ref</span></span></a><span class="br0">(</span>n<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// 按引用传递</span>
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<a href="cpp-thread-thread.html"><span class="kw2146">std::<span class="me2">thread</span></span></a> t4<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>t3<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// t4 现在运行 f2() 。 t3 不再是线程</span>
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<a href="cpp-thread-thread.html"><span class="kw2146">std::<span class="me2">thread</span></span></a> t5<span class="br0">(</span><span class="sy3">&</span>foo<span class="sy4">::</span><span class="me2">bar</span>, <span class="sy3">&</span>f<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// t5 在对象 f 上运行 foo::bar()</span>
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<a href="cpp-thread-thread.html"><span class="kw2146">std::<span class="me2">thread</span></span></a> t6<span class="br0">(</span>b<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// t6 在对象 b 的副本上运行 baz::operator()</span>
|
|
t2.<span class="me1">join</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
|
|
t4.<span class="me1">join</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
|
|
t5.<span class="me1">join</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
|
|
t6.<span class="me1">join</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"><<</span> <span class="st0">"Final value of n is "</span> <span class="sy1"><<</span> n <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
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|
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Final value of f.n (foo::n) is "</span> <span class="sy1"><<</span> f.<span class="me1">n</span> <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</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"><<</span> <span class="st0">"Final value of b.n (baz::n) is "</span> <span class="sy1"><<</span> b.<span class="me1">n</span> <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
|
|
<span class="br0">}</span></pre></div>
|
|
</div>
|
|
<p>可能的输出：</p>
|
|
<div dir="ltr" class="mw-geshi" style="text-align: left;">
|
|
<div class="text source-text">
|
|
<pre class="de1">Thread 1 executing
|
|
Thread 2 executing
|
|
Thread 3 executing
|
|
Thread 4 executing
|
|
Thread 3 executing
|
|
Thread 1 executing
|
|
Thread 2 executing
|
|
Thread 4 executing
|
|
Thread 2 executing
|
|
Thread 3 executing
|
|
Thread 1 executing
|
|
Thread 4 executing
|
|
Thread 3 executing
|
|
Thread 2 executing
|
|
Thread 1 executing
|
|
Thread 4 executing
|
|
Thread 3 executing
|
|
Thread 1 executing
|
|
Thread 2 executing
|
|
Thread 4 executing
|
|
Final value of n is 5
|
|
Final value of f.n (foo::n) is 5
|
|
Final value of b.n (baz::n) is 0</pre></div>
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|
</div>
|
|
</div>
|
|
<h3><span class="mw-headline" id=".E7.BC.BA.E9.99.B7.E6.8A.A5.E5.91.8A">缺陷报告</span></h3>
|
|
<p>下列更改行为的缺陷报告追溯地应用于以前出版的 C++ 标准。</p>
|
|
<table class="dsctable" style="font-size:0.8em">
|
|
<tr>
|
|
<th>DR</th>
|
|
<th>应用于</th>
|
|
<th>出版时的行为</th>
|
|
<th>正确行为</th>
|
|
</tr>
|
|
<tr>
|
|
<td><a rel="nofollow" class="external text" href="https://cplusplus.github.io/LWG/issue2097">LWG 2097</a></td>
|
|
<td>C++11</td>
|
|
<td>接收一个<span style="font-style:italic">可调用</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(Callable)</span> 对象的构造函数可能与移动构造函数有歧义</td>
|
|
<td>已约束</td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">引用</span></h3>
|
|
<div class="t-ref-std-c++20">
|
|
<ul>
|
|
<li>C++20 标准（ISO/IEC 14882:2020）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>32.4.2.2 thread constructors [thread.thread.constr]</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
<div class="t-ref-std-c++17">
|
|
<ul>
|
|
<li>C++17 标准（ISO/IEC 14882:2017）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>33.3.2.2 thread constructors [thread.thread.constr]</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
<div class="t-ref-std-c++14">
|
|
<ul>
|
|
<li>C++14 标准（ISO/IEC 14882:2014）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>30.3.1.2 thread constructors [thread.thread.constr]</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
<div class="t-ref-std-c++11">
|
|
<ul>
|
|
<li>C++11 标准（ISO/IEC 14882:2011）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>30.3.1.2 thread constructors [thread.thread.constr]</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div t-dsc-member-nobold-div">
|
|
<div><a href="cpp-thread-jthread-jthread.html"><span class="t-lines"><span>(构造函数)</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>创建新的 <code>jthread</code> 对象<br />
|
|
<span class="t-mark">(<code>std::jthread</code> 的公开成员函数)</span></td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
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</body>
|
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</html>
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