Book Image

Parallel Programming and Concurrency with C# 10 and .NET 6

By : Alvin Ashcraft
Book Image

Parallel Programming and Concurrency with C# 10 and .NET 6

By: Alvin Ashcraft

Overview of this book

.NET has included managed threading capabilities since the beginning, but early techniques had inherent risks: memory leaks, thread synchronization issues, and deadlocks. This book will help you avoid those pitfalls and leverage the modern constructs available in .NET 6 and C# 10, while providing recommendations on patterns and best practices for parallelism and concurrency. Parallel, concurrent, and asynchronous programming are part of every .NET application today, and it becomes imperative for modern developers to understand how to effectively use these techniques. This book will teach intermediate-level .NET developers how to make their applications faster and more responsive with parallel programming and concurrency in .NET and C# with practical examples. The book starts with the essentials of multi-threaded .NET development and explores how the language and framework constructs have evolved along with .NET. You will later get to grips with the different options available today in .NET 6, followed by insights into best practices, debugging, and unit testing. By the end of this book, you will have a deep understanding of why, when, and how to employ parallelism and concurrency in any .NET application.
Table of Contents (18 chapters)
Part 1:Introduction to Threading in .NET
Part 2: Parallel Programming and Concurrency with C#
Part 3: Advanced Concurrency Concepts

Handling multiple cancellation sources

Background tasks can leverage CancellationTokenSource to receive cancellation requests from as many sources as necessary. The static CancellationTokenSource.CreateLinkedTokenSource method accepts an array of CancellationToken objects to create a new CancellationTokenSource object that will notify us of cancellation if any of the source tokens receives a request to cancel.

Let’s look at a quick example of how to implement this in our CancellationPatterns project:

  1. First, open the PollingExample class. We are going to create an overload of the CancelWithPolling method that accepts a CancellationTokenSource parameter. The two overloads of CancelWithPolling will look like this:
    public static void CancelWithPolling()
        using CancellationTokenSource tokenSource = new();
    public static void CancelWithPolling