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Standard library header <shared_mutex> (C++14)

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C++
Standard library headers

Dieser Header ist Teil der Thread-Unterstützungsbibliothek .

Inhaltsverzeichnis

Klassen

(C++17)
bietet Einrichtung für gemeinsamen gegenseitigen Ausschluss
(Klasse)
(C++14)
bietet Einrichtung für gemeinsamen gegenseitigen Ausschluss und implementiert Sperren mit Timeout
(Klasse)
(C++14)
implementiert beweglichen Shared-Mutex-Eigentums-Wrapper
(Klassentemplate)

Funktionen

(C++14)
spezialisiert den std::swap Algorithmus
(Funktionstemplate)

Übersicht 

namespace std {
  class shared_mutex;
  class shared_timed_mutex;
  template<class Mutex> class shared_lock;
  template<class Mutex>
    void swap(shared_lock<Mutex>& x, shared_lock<Mutex>& y) noexcept;
}

Klasse std::shared_mutex 

namespace std {
  class shared_mutex {
  public:
    shared_mutex();
    ~shared_mutex();
    shared_mutex(const shared_mutex&) = delete;
    shared_mutex& operator=(const shared_mutex&) = delete;
    // Exklusiver Besitz
    void lock();                // blockierend
    bool try_lock();
    void unlock();
    // Gemeinsamer Besitz
    void lock_shared();         // blockierend
    bool try_lock_shared();
    void unlock_shared();
    using native_handle_type = /* implementation-defined */;
    native_handle_type native_handle();
  };
}

Klasse std::shared_timed_mutex 

namespace std {
  class shared_timed_mutex {
  public:
    shared_timed_mutex();
    ~shared_timed_mutex();
    shared_timed_mutex(const shared_timed_mutex&) = delete;
    shared_timed_mutex& operator=(const shared_timed_mutex&) = delete;
    // Exklusiver Besitz
    void lock();                // blockierend
    bool try_lock();
    template<class Rep, class Period>
      bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
    template<class Clock, class Duration>
      bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
    void unlock();
    // Gemeinsamer Besitz
    void lock_shared();         // blockierend
    bool try_lock_shared();
    template<class Rep, class Period>
      bool try_lock_shared_for(const chrono::duration<Rep, Period>& rel_time);
    template<class Clock, class Duration>
      bool try_lock_shared_until(const chrono::time_point<Clock, Duration>& abs_time);
    void unlock_shared();
  };
}

Klassentemplate std::shared_lock 

namespace std {
  template<class Mutex>
  class shared_lock {
  public:
    using mutex_type = Mutex;
    // Konstruktion/Kopieren/Zerstörung
    shared_lock() noexcept;
    explicit shared_lock(mutex_type& m);        // blockierend
    shared_lock(mutex_type& m, defer_lock_t) noexcept;
    shared_lock(mutex_type& m, try_to_lock_t);
    shared_lock(mutex_type& m, adopt_lock_t);
    template<class Clock, class Duration>
      shared_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
    template<class Rep, class Period>
      shared_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_time);
    ~shared_lock();
    shared_lock(const shared_lock&) = delete;
    shared_lock& operator=(const shared_lock&) = delete;
    shared_lock(shared_lock&& u) noexcept;
    shared_lock& operator=(shared_lock&& u) noexcept;
    // Sperrfunktionen
    void lock();                                // blockierend
    bool try_lock();
    template<class Rep, class Period>
      bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
    template<class Clock, class Duration>
      bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
    void unlock();
    // Modifikatoren
    void swap(shared_lock& u) noexcept;
    mutex_type* release() noexcept;
    // Beobachter
    bool owns_lock() const noexcept;
    explicit operator bool () const noexcept;
    mutex_type* mutex() const noexcept;
  private:
    mutex_type* pm;                             // nur zur Darstellung
    bool owns;                                  // nur zur Darstellung
  };
  template<class Mutex>
    void swap(shared_lock<Mutex>& x, shared_lock<Mutex>& y) noexcept;
}