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)

Studying an example on benchmarking with threads

In previous chapters, we discussed how to benchmark software using various different mechanisms. In this chapter, we will explore creating our own high-resolution timer using a thread, instead of using the high-resolution timer provided by the C++ chrono APIs.

To accomplish this, we will create a thread with the sole job of counting as fast as possible. It should be noted that although this will provide a high-resolution timer that is extremely sensitive, it has a lot of disadvantages compared to computer architectures such as Intel. These provide hardware instructions with higher resolution than is possible here, while being less susceptible to CPU frequency scaling.

In this example, the following inclusion and namespaces are needed:

#include <thread>
#include <mutex>
#include <condition_variable>
#include &lt...