using System;

using System.Linq;

using System.Threading;

using System.Threading.Tasks;

​

namespace Temp

{

    class Program

    {

        static void Main(string[] args)

        {

            //DoWorkTask();

            //NestedLockTask();

            //LockExceptionTask();

            Console.WriteLine($"End of main");

        }

​

        static async Task DoWork()

        {

            await Task.Delay(TimeSpan.FromHours(1));

        }

​

        static async Task DoWorkTask()

        {

            DoWork();

            DoWork();

            DoWork();

            Console.WriteLine("Work done");

        }

​

        static void NestedLockTask()

        {

            var a = new object();

            lock(a)

            {

                lock(a)

                {

                    // Would this be written to console?

                    Console.WriteLine("Locked");

                }

            }

        }

​

        // https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2010/zwc8s4fz(v=vs.100)?redirectedfrom=MSDN

        static void LockExceptionTask()

        {

            var lockObj = new object();

​

            try

            {

                lock (lockObj)

                {

                    throw new Exception();

                }

            }

            finally

            {

                bool lockAcquired = Monitor.TryEnter(lockObj);

​

                // What will be written to console?

                Console.WriteLine($"Finally:: Lock acquired: {lockAcquired}");

            }

        }

    }

}

​