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

Interop with synchronous code

When working with existing projects and introducing async code to the system, there will be points where synchronous and asynchronous code intersect. We have already seen some examples of how to handle this interop in this chapter. In this section, we will focus on that interop in both directions: sync calling async and async calling sync.

We will create a sample project with classes containing synchronous methods representing legacy code and another set of classes with modern async methods.

Let’s start by discussing how to consume async methods in your legacy synchronous code.

Executing async from synchronous methods

In this example, we will be working with a .NET console application that gets a patient and their list of medications. The application will call a synchronous GetPatientAndMedications method that in turn calls an async GetPatientInfoAsync method:

  1. Start by creating a new .NET console application
  2. Add Patient...