[Day15] Read Rust Atomics and Locks - Intro of Atmoics

by Mara Bos

From: Chapter 2. Atomics

To: Chapter 2. Atomics

At Topics: Chapter 2. Atomics

Notes

Atomic operations allow for different threads to safely read and modify the same variable
Eg. std::sync::atomic::AtomicI32;, std::sync::atomic::AtomicUsize
Almost all platforms provide at least all atomic types up to the size of a pointer
By interior mutability, they allow modification through a shared reference
They all have the same interface with methods for storing and loading and atomic "fetch-and-modify"
Every atomic operation takes an argument of type std::sync::atomic::Ordering: To guarantee we get about the relative ordering of operations