What are some common mistakes when using std::atomic?

What are some common mistakes when using std::atomic in C++?

Some common mistakes include not understanding memory orderings, using std::atomic with non-trivial types, and forgetting to use atomic operations correctly.

Can you explain memory orderings and why they matter?

Memory orderings define how operations on atomic variables are seen by other threads. They are crucial for ensuring data consistency.

What happens if I use std::atomic with a non-trivial type?

Using std::atomic with non-trivial types can lead to undefined behavior since std::atomic requires types to be trivially copyable.

How can I avoid these mistakes in my code?

To avoid mistakes, always read the documentation, use static analysis tools, and consider using higher-level abstractions when possible.