C++ Std::atomic::load
(since C++11) T load( std::memory_order order = std::memory_order_seq_cst ) const noexcept; T load( std::memory_order order = std::memory_order_seq_cst ) const volatile noexcept; Atomically loads and returns the current value of the atomic variable. Memory is affected according to the value of order . order must be one of std::memory_order_relaxed , std::memory_order_consume , std::memory_order_acquire or std::memory_order_seq_cst . Otherwise the behavior is undefined. Parameters order - memory order constraints to enforce Return value The current value of the atomic variable. See also operator T loads a value from an atomic object (public member function) atomic_load atomic_load_explicit (C++11) (C++11) atomically obtains the value stored in an atomic object (function template)