Understanding atomics and memory ordering takes time, and it might also be a painful journey. This is mine.
I felt that having a repo with simple unit tests would help me enhance my understanding on the topic. Besides, it's a very compact way of knowledge transfer - that's why I am making this public.
This is the simples example. Using Relaxed is more than enough, since we're only checking the
final value after all threads have incremented the value.
This example is more interesting. There are two threads: a writer and a reader. And two values,
num_a and num_b. This exmample explores different Ordering combinations, and how they
can yield different results.
They are just Rust tests. Run:
cargo test