Basic message based co-operative scheduling with trampolining.

gistfile1.cs

using System;
using System.Collections.Generic;

public class Scheduler
{
    public delegate Process Process(string message);
    public static Dictionary<Guid, Process> Processes = new Dictionary<Guid,Process>();
        
    public static Guid Spawn(Process process)
    {
       Guid key = Guid.NewGuid();
       Processes.Add(key, process);
       Console.WriteLine("Spawned: {0}", key); 
       return key; 
    }

    public static void Message(Guid address, string message)
    {
        if (Processes.ContainsKey(address)) {
            Process process = Processes[address](message);
            Processes[address] = process;
        }
    }
}

public class SchedulerApp
{
    public static Scheduler.Process BasicProcess (string message) {
        Console.WriteLine("Received: {0}", message);
        return (m) => Increment(m);
    }
    
    public static void Main()
    {
       var Pid = Scheduler.Spawn(BasicProcess);

       Scheduler.Message(Pid, "Hello Process");
    }
}