(1) | ||
atomic() noexcept = default; | (since C++11) (until C++20) | |
constexpr atomic() noexcept(std::is_nothrow_default_constructible_v<T>); | (since C++20) | |
constexpr atomic( T desired ) noexcept; | (2) | (since C++11) |
atomic( const atomic& ) = delete; | (3) | (since C++11) |
Constructs new atomic variable.
1) The default constructor is trivial: no initialization takes place other than zero initialization of static and thread-local objects. std::atomic_init may be used to complete initialization. | (until C++20) |
1) Value-initializes the underlying object (i.e. with T() ). The initialization is not atomic. Use of the default constructor is ill-formed if std::is_default_constructible_v<T> is false . | (since C++20) |
desired
. The initialization is not atomic.desired | - | value to initialize with |
The default-initialized | (until C++20) |
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