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 managed threads

Canceling asynchronous work in .NET is based on the use of a cancellation token. A token is a simple object that is used to signal that a cancellation request has been made to another thread. The CancellationTokenSource object manages these requests and contains a token. If you want to cancel several operations with the same trigger, the same token should be provided to all of the threads to be canceled.

A CancellationTokenSource instance has a Token property to access the CancellationToken property and pass it to one or more asynchronous operations. The request to cancel can only be made from the CancellationTokenSource object. The CancellationToken property provided to the other operations receives the signal to cancel but cannot initiate a cancellation.

CancellationTokenSource implements the IDisposable interface, so be sure to call Dispose when you are freeing your managed resources. A using statement or block to automatically dispose of the token...