std::atomic_init - cppreference.com (original) (raw)

Defined in header
template< class T > void atomic_init ( std::atomic<T>* obj, typename std::atomic<T>::value_type desired ) noexcept;	(1)	(since C++11) (deprecated in C++20)
template< class T > void atomic_init ( volatile std::atomic<T>* obj, typename std::atomic<T>::value_type desired ) noexcept;	(2)	(since C++11) (deprecated in C++20)

Initializes the default-constructed atomic object obj with the value desired. The function is not atomic: concurrent access from another thread, even through an atomic operation, is a data race.

If obj was not default-constructed, or this function is called twice on the same obj, the behavior is undefined.

[edit] Parameters

obj	-	pointer to an atomic object to initialize
desired	-	the value to initialize atomic object with

[edit] Return value

(none)

[edit] Notes

This function is provided for compatibility with C. If the compatibility is not required, std::atomic may be initialized through their non-default constructors.

[edit] Example

[edit] Defect reports

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