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178+ 最終更新日時(UTC):
179+ < span itemprop ="datePublished " content ="2025-01-28T09:11:31 ">
180+ 2025年01月28日 09時11分31秒
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186+ が更新
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192+ < span class ="fa fa-fw fa-clock-o fa-flip-horizontal "> </ span > 履歴
193+ </ a >
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195+ < span class ="fa fa-fw fa-pencil "> </ span > 編集
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202+
203+ < div class ="header "> <rcu></ div > < h1 itemprop ="name "> < span class ="token "> rcu</ span > < span class ="cpp cpp26 " title ="C++26で追加 "> (C++26)</ span > </ h1 >
204+ < div itemprop ="articleBody "> < p > < code > <rcu></ code > ヘッダでは、並行なデータの参照・更新を実現する< a href ="https://ja.wikipedia.org/wiki/%E3%83%AA%E3%83%BC%E3%83%89%E3%83%BB%E3%82%B3%E3%83%94%E3%83%BC%E3%83%BB%E3%82%A2%E3%83%83%E3%83%97%E3%83%87%E3%83%BC%E3%83%88 " target ="_blank "> Read-Copy Update(RCU)機構</ a > のための部品を定義する。</ p >
205+ < p > RCU同期メカニズムは、複数スレッド間で共有されるデータが高頻度で参照され、稀に更新されるようなユースケースに適している。RCU機構はスレッド間の排他制御を行わず、更新操作により不要となった古いデータを安全に解放するタイミング制御を行う。</ p >
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210+ < th > 説明</ th >
211+ < th > 対応バージョン</ th >
212+ </ tr >
213+ </ thead >
214+ < tbody >
215+ < tr >
216+ < td > < code > < span href ="https://cpprefjp.github.io/reference/rcu/rcu_obj_base.md.nolink "> rcu_obj_base</ span > </ code > </ td >
217+ < td > RCU対象オブジェクトの基底クラス(class template)</ td >
218+ < td > C++26</ td >
219+ </ tr >
220+ < tr >
221+ < td > < code > < span href ="https://cpprefjp.github.io/reference/rcu/rcu_domain.md.nolink "> rcu_domain</ span > </ code > </ td >
222+ < td > RCUドメイン(class)</ td >
223+ < td > C++26</ td >
224+ </ tr >
225+ < tr >
226+ < td > < code > < span href ="https://cpprefjp.github.io/reference/rcu/rcu_default_domain.md.nolink "> rcu_default_domain</ span > </ code > </ td >
227+ < td > デフォルトのRCUドメイン取得(function)</ td >
228+ < td > C++26</ td >
229+ </ tr >
230+ < tr >
231+ < td > < code > < span href ="https://cpprefjp.github.io/reference/rcu/rcu_synchronize.md.nolink "> rcu_synchronize</ span > </ code > </ td >
232+ < td > RCUドメインのアンロック完了を待機(function)</ td >
233+ < td > C++26</ td >
234+ </ tr >
235+ < tr >
236+ < td > < code > < span href ="https://cpprefjp.github.io/reference/rcu/rcu_barrier.md.nolink "> rcu_barrier</ span > </ code > </ td >
237+ < td > メモリ解放操作完了を待機(function)</ td >
238+ < td > C++26</ td >
239+ </ tr >
240+ < tr >
241+ < td > < code > < span href ="https://cpprefjp.github.io/reference/rcu/rcu_barrier.md.nolink "> rcu_retire</ span > </ code > </ td >
242+ < td > メモリ解放操作をスケジュル(function template)</ td >
243+ < td > C++26</ td >
244+ </ tr >
245+ </ tbody >
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248+ < h3 > 言語</ h3 >
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250+ < li > C++26</ li >
251+ </ ul >
252+ < h3 > 処理系</ h3 >
253+ < ul >
254+ < li > < a href ="../implementation.html#clang "> Clang</ a > : ??</ li >
255+ < li > < a href ="../implementation.html#gcc "> GCC</ a > : ??</ li >
256+ < li > < a href ="../implementation.html#icc "> ICC</ a > : ??</ li >
257+ < li > < a href ="../implementation.html#visual_cpp "> Visual C++</ a > : ??</ li >
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259+ < h2 > 関連項目</ h2 >
260+ < ul >
261+ < li > < code > < span href ="https://cpprefjp.github.io/reference/hazard_pointer.md.nolink "> <hazard_pointer></ span > </ code > </ li >
262+ </ ul >
263+ < h2 > 参照</ h2 >
264+ < ul >
265+ < li > < a href ="https://open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2545r4.pdf " target ="_blank "> P2545R4 Read-Copy Update(RCU)</ a > </ li >
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