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

Canceling parallel work

In this section, we will work with some examples of canceling parallel operations. There are a few operations that fall into this realm. There are static parallel operations that are part of the System.Threading.Tasks.Parallel class and there are PLINQ operations. Both of these types use a CancellationToken property, as we used in our managed threading example in the previous section. However, handling the cancellation request is slightly different. Let’s look at an example to understand the differences.

Canceling a parallel loop

In this section, we will create a sample that illustrates how to cancel a Parallel.For loop. The same method of cancellation is leveraged for the Parallel.ForEach method. Perform the following steps:

  1. Open the CancelThreadsConsoleApp project from the previous section.
  2. In the ManagedThreadsExample class, create a new ProcessTextParallel method with the following implementation:
    public static void ProcessTextParallel...