Standard library header  (C++14) (original) (raw)

This header is part of the thread support library.

[edit] Synopsis

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

[edit] Class 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;   // exclusive ownership void lock(); // blocking bool try_lock(); void unlock();   // shared ownership void lock_shared(); // blocking bool try_lock_shared(); void unlock_shared();   using native_handle_type = /* implementation-defined */; native_handle_type native_handle(); }; }

[edit] Class 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;   // exclusive ownership void lock(); // blocking 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();   // shared ownership void lock_shared(); // blocking 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(); }; }

[edit] Class template std::shared_lock

namespace std { template class shared_lock { public: using mutex_type = Mutex;   // construct/copy/destroy shared_lock() noexcept; explicit shared_lock(mutex_type& m); // blocking 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;   // locking void lock(); // blocking 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();   // modifiers void swap(shared_lock& u) noexcept; mutex_type* release() noexcept;   // observers bool owns_lock() const noexcept; explicit operator bool () const noexcept; mutex_type* mutex() const noexcept;   private: mutex_type* pm; // exposition only bool owns; // exposition only };   template void swap(shared_lock& x, shared_lock& y) noexcept; }