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- std::atomic
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- std::atomic_ref<T>::required_alignment
- std::atomic_ref<T>::fetch_add
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- std::atomic_ref<T>::fetch_and
- std::atomic_ref<T>::fetch_or
- std::atomic_ref<T>::fetch_xor
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- std::atomic_store, std::atomic_store_explicit
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- 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
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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>::fetch_or
std::atomic_ref<T>::fetch_or
| T fetch_or( T arg, std::memory_order order = std::memory_order_seq_cst ) const noexcept; |
(C++20 起) (仅为 atomic_ref<Integral> 模板特化的成员) |
|
原子地以值和 arg 的逐位或结果替换被引用对象的当前值。此操作是读修改写操作。按照 order 的值影响内存。
参数
| arg | - | 逐位或的另一参数 |
| order | - | 要施加的内存制约 |
返回值
被引用对象立即于此函数效果前的值。