atomic_exchange

Header File: Kokkos_Core.hpp

Usage:

old_val = atomic_exchange(ptr_to_value,new_value);

Atomically sets the value at the address given by ptr_to_value to new_value and returns the previously stored value at the address.

Synopsis

template<class T>
T atomic_exchange(T* const ptr_to_value, const T new_value);

Description

• template<class T>
  T atomic_exchange(T* const ptr_to_value, const T new_value);
  

  Atomically executes old_value = *ptr_to_value; *ptr_to_value = new_value; return old_value;.

  • ptr_to_value: address of the to be updated value.

  • new_value: new value.

  • old_value: value at address ptr_to_value before doing the exchange.