Standard library header <hazard_pointer> (C++26)

 

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Input/output <cinttypes>(C++11) <cstdio> <filesystem>(C++17) <fstream> <iomanip> <iosfwd> <iostream> <ios> <istream> <ostream> <print>(C++23) <spanstream>(C++23) <sstream> <streambuf> <strstream>(C++98/26*) <syncstream>(C++20) Concurrency support <atomic>(C++11) <barrier>(C++20) <condition_variable>(C++11) <future>(C++11) <hazard_pointer>(C++26) <latch>(C++20) <mutex>(C++11) <rcu>(C++26) <semaphore>(C++20) <shared_mutex>(C++14) <stdatomic.h>(C++23) <stop_token>(C++20) <thread>(C++11) Execution support <execution>(C++17)

 

This header is part of the thread support library.

Classes
hazard_pointer_obj_base (C++26)	allows an object to be hazard-protectable (class template)
hazard_pointer (C++26)	single-writer multi-reader pointer that can be owned by at most one thread at any point of time (class)
Functions
make_hazard_pointer (C++26)	constructs a hazard pointer (function)
std::swap(std::hazard_pointer) (C++26)	specializes the std::swap algorithm (function template)

Synopsis

namespace std {// hazard_pointer_obj_basetemplate<class T, class D = default_delete<T>>class hazard_pointer_obj_base;   // hazard_pointerclass hazard_pointer;   // make_hazard_pointer hazard_pointer make_hazard_pointer();void swap(hazard_pointer&, hazard_pointer&)noexcept;}

Class template std::hazard_pointer_obj_base

namespace std {template<class T, class D = default_delete<T>>class hazard_pointer_obj_base {public:void retire(D d = D())noexcept;protected: hazard_pointer_obj_base()=default; hazard_pointer_obj_base(const hazard_pointer_obj_base&)=default; hazard_pointer_obj_base(hazard_pointer_obj_base&&)=default; hazard_pointer_obj_base& operator=(const hazard_pointer_obj_base&)=default; hazard_pointer_obj_base& operator=(hazard_pointer_obj_base&&)=default; ~hazard_pointer_obj_base()=default;private: D deleter;// exposition only};}

Class std::hazard_pointer

namespace std {class hazard_pointer {public: hazard_pointer()noexcept; hazard_pointer(hazard_pointer&&)noexcept; hazard_pointer& operator=(hazard_pointer&&)noexcept; ~hazard_pointer();   bool empty()constnoexcept;template<class T> T* protect(const atomic<T*>& src)noexcept;template<class T>bool try_protect(T*& ptr, const atomic<T*>& src)noexcept;template<class T>void reset_protection(const T* ptr)noexcept;void reset_protection(nullptr_t = nullptr)noexcept;void swap(hazard_pointer&)noexcept;};}