C# 5.0 in a Nutshell by Joseph Albahari

Author:Joseph Albahari [Joseph Albahari and Ben Albahari]
Language: eng
Format: epub
Tags: COMPUTERS / Programming Languages / C#
ISBN: 9781449340964
Publisher: O'Reilly Media
Published: 2012-06-19T16:00:00+00:00

Note

You can track a task’s execution status via its Status property.

Wait

Calling Wait on a task blocks until it completes and is the equivalent of calling Join on a thread:

Task task = Task.Run (() => { Thread.Sleep (2000); Console.WriteLine ("Foo"); }); Console.WriteLine (task.IsCompleted); // False task.Wait(); // Blocks until task is complete

Wait lets you optionally specify a timeout and a cancellation token to end the wait early (see Cancellation).

Long-running tasks

By default, the CLR runs tasks on pooled threads, which is ideal for short-running compute-bound work. For longer-running and blocking operations (such as our example above), you can prevent use of a pooled thread as follows:

Task task = Task.Factory.StartNew (() => ..., TaskCreationOptions.LongRunning);

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