Book Image

Mastering Rust - Second Edition

By : Rahul Sharma, Vesa Kaihlavirta
Book Image

Mastering Rust - Second Edition

By: Rahul Sharma, Vesa Kaihlavirta

Overview of this book

Rust is an empowering language that provides a rare combination of safety, speed, and zero-cost abstractions. Mastering Rust – Second Edition is filled with clear and simple explanations of the language features along with real-world examples, showing you how you can build robust, scalable, and reliable programs. This second edition of the book improves upon the previous one and touches on all aspects that make Rust a great language. We have included the features from latest Rust 2018 edition such as the new module system, the smarter compiler, helpful error messages, and the stable procedural macros. You’ll learn how Rust can be used for systems programming, network programming, and even on the web. You’ll also learn techniques such as writing memory-safe code, building idiomatic Rust libraries, writing efficient asynchronous networking code, and advanced macros. The book contains a mix of theory and hands-on tasks so you acquire the skills as well as the knowledge, and it also provides exercises to hammer the concepts in. After reading this book, you will be able to implement Rust for your enterprise projects, write better tests and documentation, design for performance, and write idiomatic Rust code.
Table of Contents (19 chapters)

Programs and memory

"If you’re willing to restrict the flexibility of your approach, you can almost always do something better."

John Carmack

As a motivation to understand memory and its management, it's important for us to have a general idea of how programs are run by the operating system and what mechanisms are in place that allow it to use memory for its requirements.

Every program needs memory to run, whether it's your favorite command-line tool or a complex stream processing service, and they have vastly different memory requirements. In major operating system implementations, a program in execution is implemented as a process. A process is a running instance of a program. When we execute ./my_program in a shell in Linux or double-click on my_program.exe on Windows, the OS loads my_program as a process in memory and starts executing it...