std::atomic_exchange, std::atomic_exchange_explicit

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Defined in header <atomic>

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template< class T >
T atomic_exchange( std::atomic<T>* obj, T desr );

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<td > (1) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

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template< class T >
T atomic_exchange( volatile std::atomic<T>* obj, T desr );

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<td > (2) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

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template< class T >
T atomic_exchange_explicit( std::atomic<T>* obj, T desr, std::memory_order order);

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<td > (3) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

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template< class T >
T atomic_exchange_explicit( volatile std::atomic<T>* obj, T desr, std::memory_order order);

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<td > (4) </td> <td > (since C++11) </td> </tr> Template:ddcl list end

1-2) Atomically replaces the value pointed to by obj with the value of desr and returns the value obj held previously, as if by Template:cpp

3-4) Atomically replaces the value pointed to by obj with the value of desr and returns the value obj held previously, as if by Template:cpp

Parameters

obj	-	pointer to the atomic object to modify
desr	-	the value to store in the atomic object
order	-	the memory sycnhronization ordering for this operation: all values are permitted.

Return value

The value held previously by the atomic object pointed to by obj

Exceptions

noexcept specification:  

noexcept

  

See also

Template:cpp/atomic/atomic/dcl list exchangeTemplate:cpp/atomic/dcl list atomic compare exchangeTemplate:dcl list ptfun