[Day15] Read Rust Atomics and Locks — Intro of Atmoics
At Topics: Chapter 2. Atomics
From: 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