std::atomic::exchange
? | ? | (since C++11) |
|---|---|---|
T exchange( T desired, std::memory_order order = std::memory_order_seq_cst ); | ? | ? |
T exchange( T desired, std::memory_order order = std::memory_order_seq_cst ) volatile; | ? | ? |
原子化地将基础值替换为desired.操作是读-修改-写操作.。的值影响内存。order...
参数
desired | - | value to assign |
|---|---|---|
order | - | memory order constraints to enforce |
返回值
调用前原子变量的值。
例外
noexcept规格：
noexcept
另见
atomic_exchangeatomic_exchange_explicit (C++11)(C++11) | atomically replaces the value of the atomic object with non-atomic argument and returns the old value of the atomic (function template) |
|---|
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