Book Image

C++ High Performance - Second Edition

By : Björn Andrist, Viktor Sehr
5 (2)
Book Image

C++ High Performance - Second Edition

5 (2)
By: Björn Andrist, Viktor Sehr

Overview of this book

C++ High Performance, Second Edition guides you through optimizing the performance of your C++ apps. This allows them to run faster and consume fewer resources on the device they're running on without compromising the readability of your codebase. The book begins by introducing the C++ language and some of its modern concepts in brief. Once you are familiar with the fundamentals, you will be ready to measure, identify, and eradicate bottlenecks in your C++ codebase. By following this process, you will gradually improve your style of writing code. The book then explores data structure optimization, memory management, and how it can be used efficiently concerning CPU caches. After laying the foundation, the book trains you to leverage algorithms, ranges, and containers from the standard library to achieve faster execution, write readable code, and use customized iterators. It provides hands-on examples of C++ metaprogramming, coroutines, reflection to reduce boilerplate code, proxy objects to perform optimizations under the hood, concurrent programming, and lock-free data structures. The book concludes with an overview of parallel algorithms. By the end of this book, you will have the ability to use every tool as needed to boost the efficiency of your C++ projects.
Table of Contents (17 chapters)
15
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16
Index

The coroutine abstraction

We will now take a step back and talk about coroutines in general and not just focus on the coroutines added to C++20. This will give you a better understanding of why coroutines are useful but also what types of coroutines there are and how they differ. If you are already familiar with stackful and stackless coroutines and how they are executed, you can skip this section and jump right to the next section, Coroutines in C++.

The coroutine abstraction has been around for more than 60 years and many languages have adopted some sort of coroutines into their syntax or standard libraries. This means that coroutines can denote slightly different things in different languages and environments. Since this is a book about C++, I will use the terminology used in the C++ standard.

Coroutines are very similar to subroutines. In C++, we don't have anything explicitly called subroutines; instead, we write functions (free functions or member functions, for...