| | (since C++11) |
1 | T exchange( T desired, std::memory_order order = std::memory_order_seq_cst );
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1 | T exchange( T desired, std::memory_order order = std::memory_order_seq_cst ) volatile;
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Atomically replaces the underlying value with desired. The operation is 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.
Exceptions
See also
| | 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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