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std::experi...r::exchange(3) C++ Standard Libary std::experi...r::exchange(3) NAME std::experimental::atomic_weak_ptr::exchange - std::experimen- tal::atomic_weak_ptr::exchange Synopsis weak_ptr<T> exchange( weak_ptr<T> desired, std::memory_order order = std::memory_order_seq_cst ) noexcept; Atomically replaces the underlying weak_ptr with desired. The opera- tion is a read-modify-write operation. Memory is affected according to the value of order. Parameters desired - value to assign order - memory order constraints to enforce Return value The value of the atomic variable before the call. Remarks All changes to the atomic_weak_ptr object itself, and all associated use_count increments, are guaranteed to be performed atomically. Associated use_count decrements take place after the atomic operation, but are not re- quired to be part of it. Any associated destruction or deallocation operations take place after the atomic operation and are not part of it. See also std::atomic_is_lock_free(std::shared_ptr) std::atomic_load(std::shared_ptr) std::atomic_load_explicit(std::shared_ptr) std::atomic_store(std::shared_ptr) std::atomic_store_explicit(std::shared_ptr) spe- cializes atomic std::atomic_exchange(std::shared_ptr) opera- tions for std::atomic_exchange_explicit(std::shared_ptr) std::shared_ptr std::atomic_compare_exchange_weak(std::shared_ptr) (func- tion template) std::atomic_compare_exchange_strong(std::shared_ptr) std::atomic_compare_exchange_weak_explicit(std::shared_ptr) std::atomic_compare_exchange_strong_explicit(std::shared_ptr) (deprecated in C++20) http://cppreference.com 2022.07.31 std::experi...r::exchange(3)
NAME | Synopsis | Parameters | Return value | See also
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