BlockingTaskSimulation

using System;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static SemaphoreSlim mSema1 = new SemaphoreSlim(1);
        static SemaphoreSlim mSema2 = new SemaphoreSlim(0);
        static SemaphoreSlim mSema3 = new SemaphoreSlim(0);


        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            var t1 = Task.Run(BlockForTaskDelay);
            var t2 = Task.Run(BlockForSystemCall);
            var t3 = Task.Run(BlockForDeadlock);
            var t4 = Task.Run(RunningDummyWorkload);

            Task.WhenAll(t1, t2, t3).Wait();
        }

        static async Task BlockForTaskDelay()
        {
            await Task.Delay(-1);
        }

        static async Task BlockForSystemCall()
        {
            await Task.Yield();
            Thread.Sleep(-1);
        }

        static async Task BlockForDeadlock()
        {
            await mSema1.WaitAsync();
            await mSema2.WaitAsync();
            await mSema3.WaitAsync();
        }

        static async Task RunningDummyWorkload()
        {
            await Task.Yield();
            while (true)
            {
                Thread.Yield();
            }
        }


    }
}