Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Advanced Search Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Multithreading with C# Cookbook, Second Edition
  • Table Of Contents Toc
  • Feedback & Rating feedback
Multithreading with C# Cookbook, Second Edition

Multithreading with C# Cookbook, Second Edition - Second Edition

By : Agafonov
2.8 (4)
Buy this Book
close
close
Multithreading with C# Cookbook, Second Edition

Multithreading with C# Cookbook, Second Edition

2.8 (4)
By: Agafonov
Buy this Book

Overview of this book

Multi-core processors are synonymous with computing speed and power in today’s world, which is why multithreading has become a key concern for C# developers. Multithreaded code helps you create effective, scalable, and responsive applications. This is an easy-to-follow guide that will show you difficult programming problems in context. You will learn how to solve them with practical, hands-on, recipes. With these recipes, you’ll be able to start creating your own scalable and reliable multithreaded applications. Starting from learning what a thread is, we guide you through the basics and then move on to more advanced concepts such as task parallel libraries, C# asynchronous functions, and much more. Rewritten to the latest C# specification, C# 6, and updated with new and modern recipes to help you make the most of the hardware you have available, this book will help you push the boundaries of what you thought possible in C#.
Table of Contents (13 chapters)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
1. Threading Basics
chevron up
Icon
1. Threading Basics
Icon
Introduction
Icon
Creating a thread in C#
Icon
Pausing a thread
Icon
Making a thread wait
Icon
Aborting a thread
Icon
Determining a thread state
Icon
Thread priority
Icon
Foreground and background threads
Icon
Passing parameters to a thread
Icon
Locking with a C# lock keyword
Icon
Locking with a Monitor construct
Icon
Handling exceptions
2
2. Thread Synchronization
Icon
2. Thread Synchronization
Icon
Introduction
Icon
Performing basic atomic operations
Icon
Using the Mutex construct
Icon
Using the SemaphoreSlim construct
Icon
Using the AutoResetEvent construct
Icon
Using the ManualResetEventSlim construct
Icon
Using the CountDownEvent construct
Icon
Using the Barrier construct
Icon
Using the ReaderWriterLockSlim construct
Icon
Using the SpinWait construct
3
3. Using a Thread Pool
Icon
3. Using a Thread Pool
Icon
Introduction
Icon
Invoking a delegate on a thread pool
Icon
Posting an asynchronous operation on a thread pool
Icon
A thread pool and the degree of parallelism
Icon
Implementing a cancellation option
Icon
Using a wait handle and timeout with a thread pool
Icon
Using a timer
Icon
Using the BackgroundWorker component
4
4. Using the Task Parallel Library
Icon
4. Using the Task Parallel Library
Icon
Introduction
Icon
Creating a task
Icon
Performing basic operations with a task
Icon
Combining tasks
Icon
Converting the APM pattern to tasks
Icon
Converting the EAP pattern to tasks
Icon
Implementing a cancelation option
Icon
Handling exceptions in tasks
Icon
Running tasks in parallel
Icon
Tweaking the execution of tasks with TaskScheduler
5
5. Using C# 6.0
Icon
5. Using C# 6.0
Icon
Introduction
Icon
Using the await operator to get asynchronous task results
Icon
Using the await operator in a lambda expression
Icon
Using the await operator with consequent asynchronous tasks
Icon
Using the await operator for the execution of parallel asynchronous tasks
Icon
Handling exceptions in asynchronous operations
Icon
Avoiding the use of the captured synchronization context
Icon
Working around the async void method
Icon
Designing a custom awaitable type
Icon
Using the dynamic type with await
6
6. Using Concurrent Collections
Icon
6. Using Concurrent Collections
Icon
Introduction
Icon
Using ConcurrentDictionary
Icon
Implementing asynchronous processing using ConcurrentQueue
Icon
Changing asynchronous processing order with ConcurrentStack
Icon
Creating a scalable crawler with ConcurrentBag
Icon
Generalizing asynchronous processing with BlockingCollection
7
7. Using PLINQ
Icon
7. Using PLINQ
Icon
Introduction
Icon
Using the Parallel class
Icon
Parallelizing a LINQ query
Icon
Tweaking the parameters of a PLINQ query
Icon
Handling exceptions in a PLINQ query
Icon
Managing data partitioning in a PLINQ query
Icon
Creating a custom aggregator for a PLINQ query
8
8. Reactive Extensions
Icon
8. Reactive Extensions
Icon
Introduction
Icon
Converting a collection to an asynchronous Observable
Icon
Writing custom Observable
Icon
Using the Subject type family
Icon
Creating an Observable object
Icon
Using LINQ queries against an observable collection
Icon
Creating asynchronous operations with Rx
9
9. Using Asynchronous I/O
Icon
9. Using Asynchronous I/O
Icon
Introduction
Icon
Working with files asynchronously
Icon
Writing an asynchronous HTTP server and client
Icon
Working with a database asynchronously
Icon
Calling a WCF service asynchronously
10
10. Parallel Programming Patterns
Icon
10. Parallel Programming Patterns
Icon
Introduction
Icon
Implementing Lazy-evaluated shared states
Icon
Implementing Parallel Pipeline with BlockingCollection
Icon
Implementing Parallel Pipeline with TPL DataFlow
Icon
Implementing Map/Reduce with PLINQ
11
11. There's More
Icon
11. There's More
Icon
Introduction
Icon
Using a timer in a Universal Windows Platform application
Icon
Using WinRT from usual applications
Icon
Using BackgroundTask in Universal Windows Platform applications
Icon
Running a .NET Core application on OS X
Icon
Running a .NET Core application on Ubuntu Linux
12
Index
Icon
Index

Foreground and background threads

This recipe will describe what foreground and background threads are and how setting this option affects the program's behavior.

Getting ready

To work through this recipe, you will need Visual Studio 2015. There are no other prerequisites. The source code for this recipe can be found at BookSamples\Chapter1\Recipe7.

How to do it...

To understand the effect of foreground and background threads on a program, perform the following steps:

  1. Start Visual Studio 2015. Create a new C# console application project.
  2. In the Program.cs file, add the following using directives:
    using System;
using System.Threading;
using static System.Console;
using static System.Threading.Thread;
  3. Add the following code snippet below the Main method:
    class ThreadSample
{
  private readonly int _iterations;

  public ThreadSample(int iterations)
  {
    _iterations = iterations;
  }
  public void CountNumbers()
  {
    for (int i = 0; i < _iterations; i++)
    {
      Sleep(TimeSpan.FromSeconds(0.5));
      WriteLine($"{CurrentThread.Name} prints {i}");
    }
  }
}
  4. Add the following code snippet inside the Main method:
    var sampleForeground = new ThreadSample(10);
var sampleBackground = new ThreadSample(20);

var threadOne = new Thread(sampleForeground.CountNumbers);
threadOne.Name = "ForegroundThread";
var threadTwo = new Thread(sampleBackground.CountNumbers);
threadTwo.Name = "BackgroundThread";
threadTwo.IsBackground = true;

threadOne.Start();
threadTwo.Start();
  5. Run the program.

How it works...

When the main program starts, it defines two different threads. By default, a thread that we create explicitly is a foreground thread. To create a background thread, we manually set the IsBackground property of the threadTwo object to true. We configure these threads in a way that the first one will be completed faster, and then we run the program.

After the first thread is complete, the program shuts down and the background thread is terminated. This is the main difference between the two: a process waits for all the foreground threads to complete before finishing the work, but if it has background threads, they just shut down.

It is also important to mention that if a program defines a foreground thread that does not get completed; the main program does not end properly.

Visually different images
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Multithreading with C# Cookbook, Second Edition
End of Section 1
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon