std::atomic_store, std::atomic_store_explicit

< cpp‎ | atomic
 
C++
 
Atomic operations library
Types
(C++11)
(C++20)
Functions
atomic_storeatomic_store_explicit
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)
Atomic flags
(C++11)
(C++11)(C++11)
(C++11)(C++11)
Initialization
(C++11)
(C++11)
(C++11)
Memory ordering
(C++11)
(C++11)
(C++11)
(C++11)
 
Defined in header <atomic>
(1) (since C++11)
template< class T >

void atomic_store( std::atomic<T>* obj,

                   typename std::atomic<T>::value_type desr ) noexcept;
template< class T >

void atomic_store( volatile std::atomic<T>* obj,

                   typename std::atomic<T>::value_type desr ) noexcept;
(2) (since C++11)
template< class T >

void atomic_store_explicit( std::atomic<T>* obj,
                            typename std::atomic<T>::value_type desr,

                            std::memory_order order) noexcept;
template< class T >

void atomic_store_explicit( volatile std::atomic<T>* obj,
                            typename std::atomic<T>::value_type desr,

                            std::memory_order order) noexcept;
1) Atomically replaces the value pointed to by obj with the value of desr as if by obj->store(desr)
2) Atomically replaces the value pointed to by obj with the value of desr as if by obj->store(desr, order)

Parameters

obj - pointer to the atomic object to modify
desr - the value to store in the atomic object
order - the memory synchronization ordering for this operation: only std::memory_order_relaxed, std::memory_order_release and std::memory_order_seq_cst are permitted.

Return value

none.

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
P0558R1 C++11 exact type match required because T is deduced from multiple arguments T is deduced from the atomic argument only

See also

 atomically replaces the value of the atomic object with a non-atomic argument
(public member function of std::atomic<T>)
(C++11)(C++11)
 atomically obtains the value stored in an atomic object
(function template)
(C++11)
 defines memory ordering constraints for the given atomic operation
(enum)
specializes atomic operations for std::shared_ptr
(function template)