Book Image

Boost C++ Application Development Cookbook - Second Edition

By : Anton Polukhin Alekseevic
Book Image

Boost C++ Application Development Cookbook - Second Edition

By: Anton Polukhin Alekseevic

Overview of this book

If you want to take advantage of the real power of Boost and C++ and avoid the confusion about which library to use in which situation, then this book is for you. Beginning with the basics of Boost C++, you will move on to learn how the Boost libraries simplify application development. You will learn to convert data such as string to numbers, numbers to string, numbers to numbers and more. Managing resources will become a piece of cake. You’ll see what kind of work can be done at compile time and what Boost containers can do. You will learn everything for the development of high quality fast and portable applications. Write a program once and then you can use it on Linux, Windows, MacOS, Android operating systems. From manipulating images to graphs, directories, timers, files, networking – everyone will find an interesting topic. Be sure that knowledge from this book won’t get outdated, as more and more Boost libraries become part of the C++ Standard.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Passing data quickly from one process to another


Sometimes, we write programs that communicate with each other a lot. When programs are run on different machines, using sockets is the most common technique for communication. But if multiple processes run on a single machine, we can do much better!

Let's take a look at how to make a single memory fragment available from different processes using the Boost.Interprocess library.

Getting ready

Basic knowledge of C++ is required for this recipe. Knowledge of atomic variables is also required (take a look at the See also section for more information about atomics). Some platforms require linking against the runtime library rt.

How to do it...

In this example, we will be sharing a single atomic variable between processes, making it increment when a new process starts and decrement when the process terminates:

  1. We need to include the following header for interprocess communications:
#include <boost/interprocess/managed_shared_memory.hpp> 
  1. Following...