Book Image

C++ System Programming Cookbook

By : Onorato Vaticone
Book Image

C++ System Programming Cookbook

By: Onorato Vaticone

Overview of this book

C++ is the preferred language for system programming due to its efficient low-level computation, data abstraction, and object-oriented features. System programming is about designing and writing computer programs that interact closely with the underlying operating system and allow computer hardware to interface with the programmer and the user. The C++ System Programming Cookbook will serve as a reference for developers who want to have ready-to-use solutions for the essential aspects of system programming using the latest C++ standards wherever possible. This C++ book starts out by giving you an overview of system programming and refreshing your C++ knowledge. Moving ahead, you will learn how to deal with threads and processes, before going on to discover recipes for how to manage memory. The concluding chapters will then help you understand how processes communicate and how to interact with the console (console I/O). Finally, you will learn how to deal with time interfaces, signals, and CPU scheduling. By the end of the book, you will become adept at developing robust systems applications using C++.
Table of Contents (13 chapters)

Learning inter-thread communication with simple events

So far, we know how to use both POSIX and C++ standard library mechanisms to synchronize a critical section. There are use cases where we don't need to explicitly use locks; instead, we can use more simple communication mechanisms. std::promise and std::future can be used to allow two threads to communicate without the hassle of the synchronization.

How to do it...

In this recipe, we will write a program that splits a problem into two parts: thread 1 will run a highly intensive computation and will send the result to thread 2, which is the consumer of the results. We'll do this by using std::promise and std::future. Let's get started:

  1. Open...