Book Image

Modern C++ Programming Cookbook - Second Edition

By : Marius Bancila
5 (1)
Book Image

Modern C++ Programming Cookbook - Second Edition

5 (1)
By: Marius Bancila

Overview of this book

C++ has come a long way to be one of the most widely used general-purpose languages that is fast, efficient, and high-performance at its core. The updated second edition of Modern C++ Programming Cookbook addresses the latest features of C++20, such as modules, concepts, coroutines, and the many additions to the standard library, including ranges and text formatting. The book is organized in the form of practical recipes covering a wide range of problems faced by modern developers. The book also delves into the details of all the core concepts in modern C++ programming, such as functions and classes, iterators and algorithms, streams and the file system, threading and concurrency, smart pointers and move semantics, and many others. It goes into the performance aspects of programming in depth, teaching developers how to write fast and lean code with the help of best practices. Furthermore, the book explores useful patterns and delves into the implementation of many idioms, including pimpl, named parameter, and attorney-client, teaching techniques such as avoiding repetition with the factory pattern. There is also a chapter dedicated to unit testing, where you are introduced to three of the most widely used libraries for C++: Boost.Test, Google Test, and Catch2. By the end of the book, you will be able to effectively leverage the features and techniques of C++11/14/17/20 programming to enhance the performance, scalability, and efficiency of your applications.
Table of Contents (16 chapters)
13
Bibliography
14
Other Books You May Enjoy
15
Index

Using joinable threads and cancellation mechanisms

The C++11 class std::thread represents a single thread of execution and allows multiple functions to execute concurrently. However, it has a major inconvenience: you must explicitly invoke the join() method to wait for the thread to finish execution. This can lead to problems because if an std::thread object is destroyed while it is still joinable, and then std::terminate() is called. C++20 provides an improved thread class called std::jthread (from joinable thread) that automatically calls join() if the thread is still joinable when the object is destroyed. Moreover, this type supports cancellation through std::stop_source/std::stop_token and its destructor also requests the thread to stop before joining. In this recipe, you will learn how to use these new C++20 types.

Getting ready

Before you continue with this, you should read the first recipe of this chapter, Working with threads, to make sure you are familiar with std...