Book Image

Embedded Programming with Modern C++ Cookbook

By : Igor Viarheichyk
Book Image

Embedded Programming with Modern C++ Cookbook

By: Igor Viarheichyk

Overview of this book

Developing applications for embedded systems may seem like a daunting task as developers face challenges related to limited memory, high power consumption, and maintaining real-time responses. This book is a collection of practical examples to explain how to develop applications for embedded boards and overcome the challenges that you may encounter while developing. The book will start with an introduction to embedded systems and how to set up the development environment. By teaching you to build your first embedded application, the book will help you progress from the basics to more complex concepts, such as debugging, logging, and profiling. Moving ahead, you will learn how to use specialized memory and custom allocators. From here, you will delve into recipes that will teach you how to work with the C++ memory model, atomic variables, and synchronization. The book will then take you through recipes on inter-process communication, data serialization, and timers. Finally, you will cover topics such as error handling and guidelines for real-time systems and safety-critical systems. By the end of this book, you will have become proficient in building robust and secure embedded applications with C++.
Table of Contents (17 chapters)

Aligning data with cache lines

In this recipe, we will learn how to align data structures with cache lines. Data alignment can significantly affect the performance of your system, especially in the case of a multithreaded application that works in a multicore system.

Firstly, frequently accessing data that's used together is much faster if they live in the same cache line. If you program accesses variable A and then variable B consistently, a processor has to invalidate and reload its cache every time, if they are not in the same line.

Secondly, you don't want to keep data that's used independently by different threads in the same cache line. If the same cache line is modified by different CPU cores, this requires cache synchronization, which affects the overall performance of a multithreaded application that uses shared data, since in this scenario memory access...