Book Image

Hands-On System Programming with C++

By : Dr. Rian Quinn
Book Image

Hands-On System Programming with C++

By: Dr. Rian Quinn

Overview of this book

C++ is a general-purpose programming language with a bias toward system programming as it provides ready access to hardware-level resources, efficient compilation, and a versatile approach to higher-level abstractions. This book will help you understand the benefits of system programming with C++17. You will gain a firm understanding of various C, C++, and POSIX standards, as well as their respective system types for both C++ and POSIX. After a brief refresher on C++, Resource Acquisition Is Initialization (RAII), and the new C++ Guideline Support Library (GSL), you will learn to program Linux and Unix systems along with process management. As you progress through the chapters, you will become acquainted with C++'s support for IO. You will then study various memory management methods, including a chapter on allocators and how they benefit system programming. You will also explore how to program file input and output and learn about POSIX sockets. This book will help you get to grips with safely setting up a UDP and TCP server/client. Finally, you will be guided through Unix time interfaces, multithreading, and error handling with C++ exceptions. By the end of this book, you will be comfortable with using C++ to program high-quality systems.
Table of Contents (16 chapters)

Understanding file utilities

All of the C++ APIs described in this chapter thus far were added prior to C++17. Although C++ provided the ability to read and write a file, it didn't provide all of the other file operations that are needed to manage a filesystem, including file paths, directory management, and so on.

This section will focus on the std::filesystem additions in C++17 that address most of these shortcomings.


A path is nothing more than a string that represents a node in a filesystem. On UNIX systems, this is usually a string consisting of a series of directory names, /, and a filename, usually with an extension. The purpose of a path is to represent the name and location of a file, which can then be...