ARC rust

Atomic Reference Counter pointer - thread safe smart pointer that allows multiple parts of your program to share ownership of some data

Why arc?

• Rust by default allow only one owner to have mutable access to data
• When multiple threads need access to that data, ARC handles the access safely

How?

• Internally, Arc keeps a reference count of how many owners exist.
• When you clone an Arc, you get a new pointer to the same data, and the count increases.
• When an Arc is dropped, the count decreases.
• When count reaches zero, the data is freed.