update automatically

Author: cpprefjp-autoupdate

lang/cpp29.html

@@ -177,8 +177,8 @@
     <p class="text-right"><small>
       最終更新日時:
       <time itemprop="datePublished" class="js-local-time"
-            datetime="2026-09-08T13:00:25+09:00">
-        2026年09月08日 13時00分25秒 (JST)
+            datetime="2026-09-08T13:32:24+09:00">
+        2026年09月08日 13時32分24秒 (JST)
       </time>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -467,7 +467,7 @@ <h3>エラーハンドリング</h3>
 </ul>
 <h3>並行・並列</h3>
 <ul>
-<li><code><a href="../reference/thread/thread.html">std::thread</a></code>クラスと<code><a href="../reference/thread/jthread.html">std::jthread</a></code>クラスに、スレッド名とスタックサイズを設定する機能を追加</li>
+<li><code><a href="../reference/thread/thread.html">std::thread</a></code>クラスと<code><a href="../reference/thread/jthread.html">std::jthread</a></code>クラスに、スレッド名を設定する<code><a href="../reference/thread/thread/name_hint.html">name_hint</a></code>とスタックサイズを設定する<code><a href="../reference/thread/thread/stack_size_hint.html">stack_size_hint</a></code>のスレッド属性を追加</li>
 <li>SIMDデータ用に連番を生成する<code><a href="../reference/simd/iota.html">std::simd::iota</a></code>変数テンプレートを追加</li>
 <li><code><a href="../reference/bit.html">&lt;bit&gt;</a></code>ヘッダと同様に、<code><a href="../reference/simd.html">&lt;simd&gt;</a></code>ヘッダにも、以下のビット操作関数を追加<ul>
 <li>ビット列の並びを反転する<code><a href="../reference/simd/bit_reverse.html">std::simd::bit_reverse()</a></code>関数</li>

lang/cpp29/feature_test_macros.html

@@ -189,8 +189,8 @@
     <p class="text-right"><small>
       最終更新日時:
       <time itemprop="datePublished" class="js-local-time"
-            datetime="2026-09-08T13:00:25+09:00">
-        2026年09月08日 13時00分25秒 (JST)
+            datetime="2026-09-08T13:32:24+09:00">
+        2026年09月08日 13時32分24秒 (JST)
       </time>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -345,6 +345,12 @@ <h3>ライブラリ</h3>
 <td><code><a href="../../reference/simd.html">&lt;simd&gt;</a></code></td>
 </tr>
 <tr>
+<td><code>__cpp_lib_thread_attributes</code></td>
+<td><code>202606L</code></td>
+<td><code><a href="../../reference/thread/thread.html">std::thread</a></code>と<code><a href="../../reference/thread/jthread.html">std::jthread</a></code>に、スレッド名を設定する<code><a href="../../reference/thread/thread/name_hint.html">name_hint</a></code>とスタックサイズを設定する<code><a href="../../reference/thread/thread/stack_size_hint.html">stack_size_hint</a></code>のスレッド属性を追加</td>
+<td><code><a href="../../reference/thread.html">&lt;thread&gt;</a></code></td>
+</tr>
+<tr>
 <td><code>__cpp_lib_to_chars</code></td>
 <td><code>202606L</code></td>
 <td><code><a href="../../reference/charconv/to_chars.html">std::to_chars()</a></code>の浮動小数点数に対する既定表現を、値の範囲によって固定小数表記と指数表記を選択するよう変更</td>
@@ -421,6 +427,10 @@ <h2>参照</h2>
 <li>C++29で<code>__cpp_lib_simd_bitops</code>が追加された</li>
 </ul>
 </li>
+<li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2026/p2019r9.pdf" target="_blank">P2019R9 Thread attributes</a><ul>
+<li>C++29で<code>__cpp_lib_thread_attributes</code>が追加された</li>
+</ul>
+</li>
 <li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2026/p3505r4.html" target="_blank">P3505R4 Fix the default floating-point representation in <code>std::format</code></a><ul>
 <li>C++29で<code>__cpp_lib_to_chars</code>が<code>202606L</code>に更新された</li>
 </ul>

reference/chrono/make24.html

@@ -263,7 +263,7 @@ <h2>例</h2>
 <span class="w">  </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">12h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">false</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">0h</a></span><span class="p">);</span>
 
 <span class="w">  </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">12h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">12h</a></span><span class="p">);</span>
-<span class="w">  </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">1h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="n"><a href="duration/op_h.html">3h</a></span><span class="p">);</span>
+<span class="w">  </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">1h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mf">1F</span><span class="n">RnahvTXCYgEDfxSBCrvLsWorKcXmZSc</span><span class="p">);</span>
 <span class="w">  </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">3h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">15h</a></span><span class="p">);</span>
 <span class="w">  </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">11h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">23h</a></span><span class="p">);</span>
 <span class="p">}</span>

reference/thread/jthread.html

@@ -189,12 +189,12 @@
     <p class="text-right"><small>
       最終更新日時:
       <time itemprop="datePublished" class="js-local-time"
-            datetime="2026-07-22T16:08:23+09:00">
-        2026年07月22日 16時08分23秒 (JST)
+            datetime="2026-09-08T13:32:24+09:00">
+        2026年09月08日 13時32分24秒 (JST)
       </time>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
-        <span itemprop="name">rotarymars</span>
+        <span itemprop="name">Akira Takahashi</span>
       </span>
       が更新
     </small></p>
@@ -358,6 +358,16 @@ <h2>メンバ型</h2>
 <td>ネイティブハンドル型 (type-alias)［<a class="cpprefjp-defined-word" data-desc="処理系定義の動作。処理系によって事前に定めた動作をする" href="../../implementation-compliance.html#dfn-implementation-defined-behavior">処理系定義</a>］</td>
 <td>C++20</td>
 </tr>
+<tr>
+<td><code><a href="thread/name_hint.html">name_hint</a></code></td>
+<td>スレッド名を設定するスレッド属性。<code>thread::name_hint</code>の別名 (type-alias)</td>
+<td>C++29</td>
+</tr>
+<tr>
+<td><code><a href="thread/stack_size_hint.html">stack_size_hint</a></code></td>
+<td>スレッドのスタックサイズを設定するスレッド属性。<code>thread::stack_size_hint</code>の別名 (type-alias)</td>
+<td>C++29</td>
+</tr>
 </tbody>
 </table>
 <h2>非メンバ関数</h2>
@@ -468,6 +478,38 @@ <h3>stop_callbackと組み合わせる例</h3>
 </div></p>
 <h4>出力</h4>
 <p><pre><code></code></pre></p>
+<h3>名前とスタックサイズを設定する - POSIX環境 (C++29)</h3>
+<p><div class="codehilite"><pre><span></span><code><span class="cp">#include <a href="../thread.html">&lt;thread&gt;</a></span>
+<span class="cp">#include <a href="../iostream.html">&lt;iostream&gt;</a></span>
+<span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;pthread.h&gt;</span><span class="c1"> // POSIX環境</span>
+
+<span class="kt">void</span><span class="w"> </span><span class="nf">work</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="p">)</span>
+<span class="p">{</span>
+<span class="w">  </span><span class="c1">// ...</span>
+<span class="p">}</span>
+
+<span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">()</span>
+<span class="p">{</span>
+<span class="w">  </span><span class="c1">// スレッド名とスタックサイズのヒントを指定してスレッドを生成する。</span>
+<span class="w">  </span><span class="c1">// スレッド名はデバッガのスレッド一覧などに表示される</span>
+<span class="w">  </span><span class="n"><a href="">std::jthread</a></span><span class="w"> </span><span class="n">t</span><span class="p">{</span>
+<span class="w">    </span><span class="n"><a href="thread/name_hint.html">std::jthread::name_hint</a></span><span class="p">(</span><span class="s">"Worker"</span><span class="p">),</span>
+<span class="w">    </span><span class="n"><a href="thread/stack_size_hint.html">std::jthread::stack_size_hint</a></span><span class="p">(</span><span class="mi">512</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="mi">1024</span><span class="p">),</span>
+<span class="w">    </span><span class="n">work</span><span class="p">,</span>
+<span class="w">    </span><span class="mi">42</span>
+<span class="w">  </span><span class="p">};</span>
+
+<span class="w">  </span><span class="c1">// 標準ライブラリにスレッド名を取得するAPIはないが、</span>
+<span class="w">  </span><span class="c1">// ネイティブハンドルを通じてプラットフォームのAPIで取得できる</span>
+<span class="w">  </span><span class="kt">char</span><span class="w"> </span><span class="n">name</span><span class="p">[</span><span class="mi">16</span><span class="p">]{};</span>
+<span class="w">  </span><span class="n">pthread_getname_np</span><span class="p">(</span><span class="n"><a href="jthread/native_handle.html">t.native_handle()</a></span><span class="p">,</span><span class="w"> </span><span class="n">name</span><span class="p">,</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="n">name</span><span class="p">));</span>
+<span class="w">  </span><span class="n"><a href="../iostream/cout.html">std::cout</a></span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">name</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n"><a href="../ostream/endl.html">std::endl</a></span><span class="p">;</span>
+<span class="p">}</span>
+</code></pre></div>
+</p>
+<h4>出力例</h4>
+<p><pre><code>Worker
+</code></pre></p>
 <h2>バージョン</h2>
 <h3>言語</h3>
 <ul>
@@ -478,6 +520,13 @@ <h3>処理系</h3>
 <li><a href="../../implementation.html#clang">Clang</a>:</li>
 <li><a href="../../implementation.html#gcc">GCC</a>: 10.2.0 <span aria-label="検証済" role="img" title="検証済">✅</span></li>
 <li><a href="../../implementation.html#visual_cpp">Visual C++</a>: ??</li>
+</ul>
+<h2>参照</h2>
+<ul>
+<li><a href="https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2026/p2019r9.pdf" target="_blank">P2019R9 Thread attributes</a><ul>
+<li>C++29で、スレッド名を設定する<code><a href="thread/name_hint.html">name_hint</a></code>とスタックサイズを設定する<code><a href="thread/stack_size_hint.html">stack_size_hint</a></code>のスレッド属性が追加された</li>
+</ul>
+</li>
 </ul></div>
 
       </div>