Namespaces
Variants

std::atomic<T>:: operator T

From cppreference.net
C++
Concurrency support library
Threads
(C++11)
(C++20)
(C++17) (C++17)
this_thread namespace
(C++11)
(C++11)
Cooperative cancellation
Mutual exclusion
Generic lock management
Condition variables
(C++11)
(C++11)
(C++11)
(C++11)
Semaphores
(C++20) (C++20)
Latches and Barriers
(C++20)
(C++20)
Futures
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Safe reclamation
Hazard pointers
(C++26)
(C++26)
(C++26)
Atomic types
(C++11)
(C++20)
(C++11)
Initialization of atomic types
(C++11) (deprecated in C++20)
(C++11) (deprecated in C++20)
(C++11)
Memory ordering
(C++11)
(C++11) (deprecated in C++26)
(C++11)
(C++11)
Free functions for atomic operations
(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++26) (C++26)
(C++26) (C++26)
(C++11)
(C++20) (C++20)
(C++20)
(C++20)
Free functions for atomic flags
(C++11) (C++11)
(C++11) (C++11)
(C++20) (C++20)
(C++20) (C++20)
(C++20)
(C++20)
std::atomic
Member functions
atomic::operator T
(C++20)
(C++20)
(C++20)
Constants
(C++17)
Specialized member functions
Specialized for integral,
floating-point (C++20)
and pointer types
Specialized for integral and
pointer types only
(C++26)
(C++26)
Specialized for integral types only
operator T ( ) const noexcept ;
(1) (自 C++11 起)
operator T ( ) const volatile noexcept ;
(2) (自 C++11 起)

以原子方式加载并返回该原子变量的当前值。等价于 load ( ) 。

若 std:: atomic < T > :: is_always_lock_free 为 false 且重载 (2) 参与重载决议，则该用法被弃用。

(since C++20)

参数

(无)

返回值

原子变量的当前值。

参见

原子地获取原子对象的值
(公开成员函数)