Book Image

C++17 STL Cookbook

By : Jacek Galowicz
Book Image

C++17 STL Cookbook

By: Jacek Galowicz

Overview of this book

C++ has come a long way and is in use in every area of the industry. Fast, efficient, and flexible, it is used to solve many problems. The upcoming version of C++ will see programmers change the way they code. If you want to grasp the practical usefulness of the C++17 STL in order to write smarter, fully portable code, then this book is for you. Beginning with new language features, this book will help you understand the language’s mechanics and library features, and offers insight into how they work. Unlike other books, ours takes an implementation-specific, problem-solution approach that will help you quickly overcome hurdles. You will learn the core STL concepts, such as containers, algorithms, utility classes, lambda expressions, iterators, and more, while working on practical real-world recipes. These recipes will help you get the most from the STL and show you how to program in a better way. By the end of the book, you will be up to date with the latest C++17 features and save time and effort while solving tasks elegantly using the STL.
Table of Contents (18 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Performing exception safe shared locking with std::unique_lock and std::shared_lock


Since the operation of threads is a heavily operating system support-related thing and the STL provides good operating system-agnostic interfaces for that, it is also wise to provide STL support for synchronization between threads. This way, we can not only start and stop threads without external libraries but also synchronize them with abstractions from a single unified library: the STL.

In this recipe, we will have a look at STL mutex classes and RAII lock abstractions. While we play around with some of them in our concrete recipe implementation, we will also get an overview of more synchronization helpers that the STL provides.

How to do it...

We are going to write a program that uses an std::shared_mutex instance in its exclusive and shared modes and to see what that means. Additionally, we do not call the lock and unlock functions ourselves but do the locking with automatic unlocking using RAII helpers...