Book Image

Modern C++ Programming Cookbook

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook

By: Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. Fast, efficient, and flexible, it is used to solve many problems. The latest versions of C++ have seen programmers change the way they code, giving up on the old-fashioned C-style programming and adopting modern C++ instead. Beginning with the modern language features, each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. You will learn major concepts about the core programming language as well as common tasks faced while building a wide variety of software. You will learn about concepts such as concurrency, performance, meta-programming, lambda expressions, regular expressions, testing, and many more in the form of recipes. These recipes will ensure you can make your applications robust and fast. By the end of the book, you will understand the newer aspects of C++11/14/17 and will be able to overcome tasks that are time-consuming or would break your stride while developing.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Sending notifications between threads


Mutexes are synchronization primitives that can be used to protect access to shared data. However, the standard library provides a synchronization primitive called a condition variable that enables a thread to signal to others that a certain condition has occurred. The thread or the threads that are waiting on the condition variable are blocked until the condition variable is signaled or until a timeout or a spurious wakeup occurs. In this recipe, we will see how to use condition variables to send notifications between thread-producing data and thread-consuming data.

Getting ready

For this recipe, you need to be familiar with threads, mutexes, and locks. Condition variables are available in the std namespace in the <condition_variable> header. 

How to do it...

Use the following pattern for synchronizing threads with notifications on condition variables:

  1. Define a condition variable (in the appropriate context):
        std::condition_variable cv;
  1. Define...