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関連タグで絞り込む (2)
●
C++
●
c++11
タグの絞り込みを解除
c++とmutexに関するmoccos_infoのブックマーク (5)
●
2 users
●
www.infoq.com
●テクノロジー
InfoQ Software Architects' Newsletter A monthly overview of things you need to know as an architect or aspiring architect. View an example
moccos_info
2014/11/11
●mutex
●c++
●c++11
●
3 users
●
askldjd.wordpress.com
●テクノロジー
Recently, I have been playing around with reader-writer (RW) locks. I have never encountered RW locks in practice, but I have read that they could be inefficient in practice, and often results in more harm than good. Recall that traditional mutex ensures that only one thread may enter a critical region. But if the critical region is being written infrequently, itis possible to exploit this concur
moccos_info
2014/10/07
●c++
●mutex
●
1 user
●
permalink.gmane.org
●テクノロジー
moccos_info
2014/10/07
●c++
●mutex
●
25 users
●
kumagi.hatenadiary.org
●テクノロジー
Boostに以前からread-writeロックは実装されていたようですがバグがあったとかで最近の物ではupgrade_lock, upgrade_to_unique_lockにさし変わっています。 ただのロックと比べてパフォーマンスが出やすい上に素性の良い設計だと思うので紹介してみようと思います。 read lock read-lockをする場合はshared_mutexを引数にshared_lockをかけてやればいいです。 #include <boost/thread.hpp> using namespace boost; shared_mutexmutex; void reader(){ shared_lock<shared_mutex> read_lock(mutex); // ここでロック！ // クリティカルセクション } スコープを外れると同時にshared_lockのデスト
moccos_info
2013/02/14
●c++
●mutex
●
13 users
●
blog.cryolite.net
●テクノロジー
http://cpplover.blogspot.com/2011/07/mutex.html C++ のソースコード中に﹁途中のreturnや例外に気をつけること﹂などといったコメントはあってはならないため，補足． // 排他的にアクセスするリソース class exclusive_resource {public : std::vector<int> v ; private : std::mutex m ; public : void lock() { m.lock() ; } void try_lock() { m.try_lock() ; } void unlock() { m.unlock() ; } } ; exclusive_resource res1, res2 ; void thread1() {// res1のみを操作 std::lock_guard< exclusi
moccos_info
2012/11/16
●mutex
●C++
●c++11
1
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設定を変更しましたx
Lock-free Programming in C++ with Herb Sutter
Performance Comparison on Reader-Writer Locks
gmane.org - gmane リソースおよび情報
2010-12-27
C++0x の std::unique_lock - std::defer_lock と std::adopt_lock でちょっと高度なロック管理