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Asynchronous Programming in Rust

You're reading from  Asynchronous Programming in Rust

Product type Book
Published in Feb 2024
Publisher Packt
ISBN-13 9781805128137
Pages 306 pages
Edition 1st Edition
Languages
Author (1):
Carl Fredrik Samson Carl Fredrik Samson
Profile icon Carl Fredrik Samson

Table of Contents (16) Chapters

Preface 1. Part 1:Asynchronous Programming Fundamentals
2. Chapter 1: Concurrency and Asynchronous Programming: a Detailed Overview 3. Chapter 2: How Programming Languages Model Asynchronous Program Flow 4. Chapter 3: Understanding OS-Backed Event Queues, System Calls, and Cross-Platform Abstractions 5. Part 2:Event Queues and Green Threads
6. Chapter 4: Create Your Own Event Queue 7. Chapter 5: Creating Our Own Fibers 8. Part 3:Futures and async/await in Rust
9. Chapter 6: Futures in Rust 10. Chapter 7: Coroutines and async/await 11. Chapter 8: Runtimes, Wakers, and the Reactor-Executor Pattern 12. Chapter 9: Coroutines, Self-Referential Structs, and Pinning 13. Chapter 10: Creating Your Own Runtime 14. Index 15. Other Books You May Enjoy

Leaf futures

Runtimes create leaf futures, which represent a resource such as a socket.

This is an example of a leaf future:

let mut stream = tokio::net::TcpStream::connect("127.0.0.1:3000");

Operations on these resources, such as a reading from a socket, will be non-blocking and return a future, which we call a leaf future since it’s the future that we’re actually waiting on.

It’s unlikely that you’ll implement a leaf future yourself unless you’re writing a runtime, but we’ll go through how they’re constructed in this book as well.

It’s also unlikely that you’ll pass a leaf future to a runtime and run it to completion alone, as you’ll understand by reading the next paragraph.

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