How is atomic used in C++?

In C++, std::atomic is a template class used to implement atomic operations. It offers a way for concurrent programming to ensure that access and modifications to shared variables between multiple threads are atomic, preventing data races and undefined behavior.

std::atomic can be used with various built-in data types, such as integers and pointers, as well as user-defined types. Here are some commonly used member functions and operations of std::atomic:

1. upload the()
2. a standard library for atomic operations
3. save the value
4. std::atomic is a standard library feature in C++ that provides support for atomic operations.
5. swap(value)
6. atomic variable
7. Add the value to the current value and return the result.
8. standard atomic operation
9. decrease the value by fetching sub
10. a standard library class for atomic operations
11. Attempt to update the value of a variable with a new desired value if the current value matches the expected value.
12. a standard library template for implementing atomic operations in multi-threaded programs
13. anticipated
14. wanted
15. truthful
16. anticipated
17. untrue
18. Replace the expected value with the desired value if the current value is equal to the expected value.
19. compare_exchange_weak is a function that compares the current value of a variable with a given value, and if they are equal, it exchanges the value of the variable with a new value.
20. is free from locks
21. atomic variable in C++ standard library

When using std::atomic, data consistency and correctness can be ensured through atomic operations, avoiding issues such as race conditions and data races. However, it is important to note that atomic operations may introduce some performance overhead, so in certain situations, using std::atomic may not be the best choice.