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Modern C++ Programming Cookbook

You're reading from   Modern C++ Programming Cookbook Recipes to explore data structure, multithreading, and networking in C++17

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Product type Paperback
Published in May 2017
Publisher Packt
ISBN-13 9781786465184
Length 590 pages
Edition 1st Edition
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Author (1):
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Marius Bancila Marius Bancila
Author Profile Icon Marius Bancila
Marius Bancila
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Table of Contents (13) Chapters Close

Preface 1. Learning Modern Core Language Features FREE CHAPTER 2. Working with Numbers and Strings 3. Exploring Functions 4. Preprocessor and Compilation 5. Standard Library Containers, Algorithms, and Iterators 6. General Purpose Utilities 7. Working with Files and Streams 8. Leveraging Threading and Concurrency 9. Robustness and Performance 10. Implementing Patterns and Idioms 11. Exploring Testing Frameworks 12. Bibliography

Registering a function to be called when a program exits normally


It is common that a program, upon exit, must perform cleanup code to release resources, or write something to a log, or do some other end operation. The standard library provides two utility functions that enable us to register functions to be called when a program terminates normally, either by returning from main() or through a call to std::exit() or std::quick_exit(). This is particularly useful for libraries that need to perform an action before the program is terminated, without relying on the user to explicitly call an end function. In this recipe, you will learn how to install exit handlers and how they work.

Getting ready

All the functions discussed in this recipe, exit(), quick_exit(), atexit(), and at_quick_exit(), are available in the namespace std in the header <cstdlib>.

How to do it...

To register functions to be called upon termination of a program, you should use the following:

  • std::atexit() to register functions...
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