Question

As we know, C#’s built-in thread model does not support the passing of return values from one thread back to the “parent” thread that created it. I’m implementing a small compiler for matrix calculations in C#. Compiler generates IL code using System.Reflection.Emit name space. For this compiler I’m planning to implement call-return semantics. Can somebody point out to me a suitable technique to implement call-return semantics using C# Thread (or any other technique)?

Answer 1

Have a look at the Task<T> Class:

Task<TResult> Class

Represents an asynchronous operation that can return a value.

Example 1: Start a new task and wait for the task to complete

var task = Task<int>.Factory.StartNew(() => GenerateResult());

task.Wait();
Console.WriteLine(task.Result);

Example 2: Start a new task and continue with action when the task completes

var task = Task<int>.Factory.StartNew(() => GenerateResult());

task.ContinueWith(t =>
{
    Console.WriteLine(t.Result);
});