Rust Concurrency with Mutex and Arc

Handling concurrent programs in Rust, safely and efficiently is another major goal and a feature that Rust provides. Concurrency in Rust is facilitated by its ownership system, borrowing rules, and a set of abstractions provided by the standard library. Rust’s approach to concurrency emphasizes safety without sacrificing performance.

Let’s come up with a case study: There’s a program with multiple threads that needs to access a file concurrently. How do we avoid issues like race conditionUnpredictable behavior due to simultaneous access to shared resources.?[object Object] This can be done using the Mutex module, which is a part of Rust’s std library.

The Mutex module

Mutex locks are a concept used for thread synchronization and allow the seamless access of a resource. The Mutex module allows us to create a variable for a file that we need to write to. It allows us to make sure that when a thread is about to access that variable, it locks it first so that none of the other threads can access it at that point in time.

So let’s start by opening a file: