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)

Exploring an example on TCP Logger

To demonstrate something more useful, the following example implements the same logger that we have been developing throughout this book, but as a remote logging facility.


The same macros and includes are needed for this example as with the previous examples in this chapter. To start the server, we must define the log file:

std::fstream g_log{"server_log.txt", std::ios::out | std::ios::app};

Since the logger will be executing on the same computer to keep the example simple, we will name the file the server is logging to as server_log.txt.

The server is identical to the TCP server in the previous example, with the exception that only a recv() member function is needed (that...