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- std::atomic
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- std::atomic_ref<T>::atomic_ref
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- std::atomic_ref<T>::required_alignment
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- std::atomic_ref<T>::fetch_and
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- std::atomic_ref<T>::fetch_xor
- std::atomic_ref<T>::operator++,++(int),--,--(int)
- std::atomic_ref<T>::operator+=,-=,&=,|=,^=
- std::atomic_store, std::atomic_store_explicit
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- std::atomic_exchange, std::atomic_exchange_explicit
- std::atomic_compare_exchange_weak, std::atomic_compare_exchange_strong, std::atomic_compare_exchange_weak_explicit, std::atomic_compare_exchange_strong_explicit
- std::atomic_fetch_add, std::atomic_fetch_add_explicit
- std::atomic_fetch_sub, std::atomic_fetch_sub_explicit
- std::atomic_fetch_and, std::atomic_fetch_and_explicit
- std::atomic_fetch_or, std::atomic_fetch_or_explicit
- std::atomic_fetch_xor, std::atomic_fetch_xor_explicit
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位置：首页 > C++ 参考手册 >原子操作库 >std::atomic_ref > std::atomic_ref<T>::exchange
std::atomic_ref<T>::exchange
| T exchange( T desired, std::memory_order order = std::memory_order_seq_cst ) const noexcept; |
(C++20 起) | |
原子地以 desired 替换被引用对象的值。该操作是读修改写操作。按照 order 的值影响内存。
参数
| desired | - | 要赋值的值 |
| order | - | 要施加的内存顺序制约 |
返回值
调用前被引用对象的值。