Book Image

Advanced C++

By : Gazihan Alankus, Olena Lizina, Rakesh Mane, Vivek Nagarajan, Brian Price
5 (1)
Book Image

Advanced C++

5 (1)
By: Gazihan Alankus, Olena Lizina, Rakesh Mane, Vivek Nagarajan, Brian Price

Overview of this book

C++ is one of the most widely used programming languages and is applied in a variety of domains, right from gaming to graphical user interface (GUI) programming and even operating systems. If you're looking to expand your career opportunities, mastering the advanced features of C++ is key. The book begins with advanced C++ concepts by helping you decipher the sophisticated C++ type system and understand how various stages of compilation convert source code to object code. You'll then learn how to recognize the tools that need to be used in order to control the flow of execution, capture data, and pass data around. By creating small models, you'll even discover how to use advanced lambdas and captures and express common API design patterns in C++. As you cover later chapters, you'll explore ways to optimize your code by learning about memory alignment, cache access, and the time a program takes to run. The concluding chapter will help you to maximize performance by understanding modern CPU branch prediction and how to make your code cache-friendly. By the end of this book, you'll have developed programming skills that will set you apart from other C++ programmers.
Table of Contents (11 chapters)
6. Streams and I/O

Synchronous, Asynchronous, and Threaded Execution

There is a nuanced distinction between the concepts of concurrent programming: synchronous, asynchronous, and threaded execution. To clarify it, we will start from the very beginning, with the concept of concurrent and parallel programs.


The idea of concurrency is more than one task being executed simultaneously. Concurrency doesn't specify how the simultaneity will be achieved. It only indicates that more than one task will be completed in a given period. Tasks can be dependent, parallel, synchronous, or asynchronous. The following diagram shows the concept of concurrent work:

Figure 5.1: The abstraction of the concurrency - a few people working on the same computer

In the preceding diagram, three people are working at the same time on one computer. We aren't interested in the way they do that, it's doesn't matter for this level of the abstraction.


Parallelism occurs when several tasks...