Book Image

Hands-On System Programming with Go

By : Alex Guerrieri
Book Image

Hands-On System Programming with Go

By: Alex Guerrieri

Overview of this book

System software and applications were largely created using low-level languages such as C or C++. Go is a modern language that combines simplicity, concurrency, and performance, making it a good alternative for building system applications for Linux and macOS. This Go book introduces Unix and systems programming to help you understand the components the OS has to offer, ranging from the kernel API to the filesystem. You'll then familiarize yourself with Go and its specifications. You'll also learn how to optimize input and output operations with files and streams of data, which are useful tools in building pseudo-terminal applications. You'll gain insights into how processes communicate with each other, and learn about processes and daemon control using signals, pipes, and exit codes. This book will also enable you to understand how to use network communication using various protocols, including TCP and HTTP. As you advance, you'll focus on Go's best feature - concurrency, which will help you handle communication with channels and goroutines, other concurrency tools to synchronize shared resources, and the context package to write elegant applications. By the end of this book, you will have learned how to build concurrent system applications using Go
Table of Contents (24 chapters)
Free Chapter
1
Section 1: An Introduction to System Programming and Go
5
Section 2: Advanced File I/O Operations
9
Section 3: Understanding Process Communication
14
Section 4: Deep Dive into Concurrency
19
Section 5: A Guide to Using Reflection and CGO

Chapter 12

  1. What's a race condition?
    A race condition is a situation where an application tries to execute two operations on the same resource at the same time, and the nature of the resource only allows one operation at time.
  2. What happens when you try to execute read and write operations concurrently with a map?
    When reading and writing operations on a map happen simultaneously, this causes a runtime error: concurrent map writes.
  3. What's the difference between Mutex and RWMutex?
    A regular mutex allows a resource to be locked and unlocked, and each operation has the same priority. A read/write mutex has two types of locks, one for each operation (read/write). The read lock allows more than one operation at time, while it is exclusive. Write locks could be subject to a delay if there are many continuous read operations on the resource. This is known as write...