.NET 4.5 Parallel Extensions Cookbook by Unknown

Author:Unknown
Language: eng
Format: mobi, epub
Publisher: Packt Publishing

By calling the GetConsumingEnumerable method of BlockingCollection, we can now use much cleaner foreach loop syntax.

Task.Factory.StartNew(() => { foreach (var item in result.GetConsumingEnumerable()) { Console.Write("\nConsuming item: {0}", item); } }); Console.ReadLine();

The GetConsumingEnumerable method takes a snapshot of the current state of the underlying collection and returns IEnumerable<T> for the collection items.

Performing LIFO operations with ConcurrentStack

ConcurrentStack is the thread safe counterpart of Systems.Collections.Generic.Stack, which is the standard Last-In-First-Out (LIFO) container in the .NET Framework. For algorithms that favor stack usage such as depth-first searches, a thread safe stack is a big benefit.

In this recipe we are going to take a look at the basic usage of ConcurrentStack. Our Console application for this recipe will initialize a range of data, which a simple producer Task will push onto the stack. Consumer Task will concurrently pop items from the stack and write them to Console.

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