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- std::atomic
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- std::atomic_ref<T>::required_alignment
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- std::atomic_fetch_add, std::atomic_fetch_add_explicit
- std::atomic_fetch_sub, std::atomic_fetch_sub_explicit
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- 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>::required_alignment
std::atomic_ref<T>::required_alignment
| static constexpr std::size_t required_alignment= /*implementation-defined*/; |
(C++20 起) | |
required_alignment 的值是要被原子引用所引用的对象所需的对齐要求，至少为 alignof(T) 。
注意
硬件可能要求要被引用 atomic_ref<T> 的对象拥有比其他 T 对象更严格的要求，而 atomic_ref 上的操作是否免锁能依赖于被引用对象的对齐。