February 2014
Intermediate to advanced
1560 pages
50h 21m
English
Content preview from Professional C# 5.0 and .NET 4.5.1
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Chapter 21Tasks, Threads, and Synchronization
WHAT’S IN THIS CHAPTER?
- An overview of multi-threading
- Working with the
Parallelclass - Tasks
- Cancellation framework
Threadclass and thread pools- Threading issues
- Synchronization techniques
- Timers
WROX.COM CODE DOWNLOADS FOR THIS CHAPTER
The wrox.com code downloads for this chapter are found at www.wrox.com/go/procsharp on the Download Code tab. The code for this chapter is divided into the following major examples:
- Parallel
- Task
- Cancellation
- ThreadClass
- Synchronization
- DataFlow
OVERVIEW
There are several reasons for using threading. Suppose that you are making a network call from an application that might take some time. You don’t want to stall the user interface and force the user to wait idly until the response is returned from the server. The user could perform some other actions in the meantime or even cancel the request that was sent to the server. Using threads can help.
For all activities that require a wait — for example, because of file, database, or network access — a new thread can be started to fulfill other tasks at the same time. Even if you have only processing-intensive tasks to do, threading can help. Multiple threads of a single process can run on different CPUs, or, nowadays, on different cores of a multiple-core CPU, at the same time.
You must be aware of some issues when running multiple threads, however. Because they can run during the same time, you can easily get into problems if the threads access the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.