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 Be sure that knowledge from this book won’t get outdated, as more and more Boost libraries become part of the C++ Standard.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

Getting and processing system signals as tasks


When writing some server application (especially for Linux OS), catching and processing the signals is required. Usually, all the signal handlers are set up at server start and do not change during the application's execution.

The goal of this recipe is to make our tasks_processor class capable of processing signals.

Getting ready

We will need code from the first recipe of this chapter. A sound knowledge of Boost.Function is also required.

This recipe requires linking with the boost_system and boost_thread libraries.

How to do it...

This recipe is similar to the recipes from 2 to 4 of this chapter: we have async signal waiting functions, some async signal handlers, and some support code.

  1. Let's start by including the following headers:
#include <boost/asio/signal_set.hpp> 
#include <boost/function.hpp> 
  1. Now, we add a member for signals processing to the tasks_processor class:
protected:
    static boost::asio::signal_set& signals() {
 ...