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

Managing deadlocks and race conditions

As with many tools at a developer’s disposal, misusing features of managed threading can have adverse impacts on your applications at runtime. Deadlocks and race conditions are two scenarios that can be created because of multithreaded programming:

  • A deadlock happens when multiple threads are trying to lock the same resource and as a result, cannot continue executing.
  • Race conditions happen when multiple threads are proceeding toward updating a particular routine, and a correct outcome is dependent on the order in which they execute it.

Figure 3.2 – Two threads in contention for the same resources, causing a deadlock

First, let’s discuss deadlocks and some techniques for avoiding them.

Mitigating deadlocks

It is critical to avoid deadlocks in your applications. If one of the threads involved in a deadlock is the application’s UI thread, it will cause the application to...