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)

Time Interfaces in Unix

In this chapter, the reader will learn how to program the POSIX and C++ time interfaces using C++17. To start, this chapter will cover the UNIX epoch and POSIX time.h APIs and how to use them. Next, the C++ Chrono APIs will be briefly explained, how they relate to time.h, and some examples will also be provided. Finally, this chapter will conclude with two simple examples of how to use the time interfaces. The first example will demonstrate how to read the system clock and output the results to the console on an interval, and the second example will demonstrate how to benchmark software using the C++ high-resolution timer.

In this chapter, we will cover the following topics:

  • Learning about POSIX time.h APIs
  • The C++ Chrono APIs
  • Understanding the read system clock with an example
  • An example involving a high-resolution timer