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C++ High Performance

C++ High Performance

By : Björn Andrist, Sehr
4.4 (24)
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C++ High Performance

C++ High Performance

4.4 (24)
By: Björn Andrist, 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)
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15
Other Books You May Enjoy
16
Index

Coroutines and Lazy Generators

Computing has become a world of waiting, and we need support in our programming languages to be able to express wait. The general idea is to suspend (temporarily pause) the current flow and hand execution over to some other flow, whenever it reaches a point where we know that we might have to wait for something. This something that we need to wait for could be a network request, a click from a user, a database operation, or even a memory access that is taking too long for us to block at. Instead, we say in our code that we will wait, continue some other flow, and then come back when ready. Coroutines allow us to do that.

In this chapter, we're mainly going to focus on coroutines added to C++20. You will learn what they are, how to use them, and their performance characteristics. But we will also spend some time looking at coroutines in a broader sense, since the concept is apparent in many other languages.

C++ coroutines come with very little...

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