std::experimental::atomic_shared_ptr::exchange
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< cpp | experimental | atomic shared ptr
shared_ptr<T> exchange( shared_ptr<T> desired, std::memory_order order = std::memory_order_seq_cst ); |
||
Atomically replaces the underlying shared_ptr
with desired
. The operation is a 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.
Remarks
All changes to the atomic_shared_ptr
object itself, and all associated use_count increments, are guaranteed to be performed atomically. Associated use_count
decrements take place after the atomic operation, but are not required to be part of it. Any associated destruction or deallocation operations take place after the atomic operation and are not part of it.
Exceptions
noexcept specification:
noexcept
See also
specializes atomic operations for std::shared_ptr (function template) |