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 Be sure that knowledge from this book won’t get outdated, as more and more Boost libraries become part of the C++ Standard.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

Pipeline tasks processing


Sometimes, there is a requirement to process tasks in a specified time interval. Compared to previous recipes, where we were trying to process tasks in the order of their appearance in the queue, this is a big difference.

Consider the example where we are writing a program that connects two subsystems, one of which produces data packets and the other writes modified data to the disk (something like this can be seen in video cameras, sound recorders, and other devices). We need to process data packets one by one in the specified order, smoothly with a small jitter, and in multiple threads.

Naive approach does not work here:

#include <boost/thread/thread.hpp>

subsystem1 subs1;
subsystem2 subs2;

void process_data() {
    while (!subs1.is_stopped()) {
        data_packet data = subs1.get_data();
        decoded_data d_decoded = decode_data(data);
        compressed_data c_data = compress_data(d_decoded);
        subs2.send_data(c_data);
    }
}

void run_in_multiple_threads...