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)
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Coroutines in C++

The coroutines added to C++20 are stackless coroutines. There are options to use stackful coroutines in C++ as well by using third-party libraries. The most well-known cross-platform library is Boost.Fiber. C++20 stackless coroutines introduce new language constructs, while Boost.Fiber is a library that can be used with C++11 and onward. We will not discuss stackful coroutines any further in this book but will instead focus on the stackless coroutines that have been standardized in C++20.

The stackless coroutines in C++20 were designed with the following goals:

  • Scalable in the sense that they add very little memory overhead. This makes it possible to have many more coroutines alive compared to the possible number of threads or stackful coroutines alive.
  • Efficient context switching, which means that suspending and resuming a coroutine should be about as cheap as an ordinary function call.
  • Highly flexible. C++ coroutines have more than...