Async processing

Scenario:

Run code Async

Solution:

• Sync call

 
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using System;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)

        {
            Tea tea = PourTea();
            Console.WriteLine("tea is ready");

            Poha poha = FryPoha(2);
            Console.WriteLine("poha are ready");

            Laddu laddu = MakeLaddu(3);
            Console.WriteLine("laddu are ready");

            Toast toast = ToastBread(2);
            ApplyButter(toast);
            ApplyJam(toast);
            Console.WriteLine("toast is ready");

            Juice mj = PourMJ();
            Console.WriteLine("Mango juice is ready");
            Console.WriteLine("Breakfast is ready!");

            Console.Read();
        }

        private static Juice PourMJ()
        {
            Console.WriteLine("Pouring Mango juice");
            return new Juice();
        }

        private static void ApplyJam(Toast toast) =>
            Console.WriteLine("Putting jam on the toast");

        private static void ApplyButter(Toast toast) =>
            Console.WriteLine("Putting butter on the toast");

        private static Toast ToastBread(int slices)
        {
            for (int slice = 0; slice < slices; slice++)
            {
                Console.WriteLine("Putting a slice of bread in the toaster");
            }
            Console.WriteLine("Start toasting...");
            Task.Delay(3000).Wait();
            Console.WriteLine("Remove toast from toaster");

            return new Toast();
        }

        private static Poha FryPoha(int ingrediants)
        {
            Console.WriteLine($"putting {ingrediants} ingrediants in kadhai");
            Console.WriteLine("cooking in kadhai...");
            Task.Delay(3000).Wait();
            for (int ingrediant = 0; ingrediant < ingrediants; ingrediant++)
            {
                Console.WriteLine($"cooking ingrediant {ingrediant}");
            }
            Console.WriteLine("steam poha..");
            Task.Delay(3000).Wait();
            Console.WriteLine("Put poha on plate");

            return new Poha();
        }

        private static Laddu MakeLaddu(int howMany)
        {
            Console.WriteLine("Warming the pan...");
            Task.Delay(3000).Wait();
            Console.WriteLine($"make {howMany} laddu");
            Task.Delay(3000).Wait();
            Console.WriteLine("Put laddu on plate");

            return new Laddu();
        }

        private static Tea PourTea()
        {
            Console.WriteLine("Pouring tea");
            return new Tea();
        }
    }

    internal class Juice
    {
    }

    internal class Toast
    {
    }

    internal class Poha
    {
    }

    internal class Laddu
    {
    }

    internal class Tea
    {
    }
}

• Async call. The main thread is released but individual task still blocking

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using System;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class ProgramAsync
    {
        static async Task Main(string[] args)

        {
            Tea tea = PourTea();
            Console.WriteLine("tea is ready");

            var poha = await FryPohaAsync(2);
            //Poha poha = await pohaTask;
            Console.WriteLine("poha are ready");

            var laddu = await MakeLadduAsync(3);
            //Laddu laddu = await ladduTask;
            Console.WriteLine("laddu are ready");

            var toast = await ToastBreadAsync(2);
            //Toast toast = await toastTask;

            ApplyButter(toast);
            ApplyJam(toast);
            Console.WriteLine("toast is ready");

            Juice mj = PourMJ();
            Console.WriteLine("Mango juice is ready");
            Console.WriteLine("Breakfast is ready!");

            Console.Read();
        }

        private static Juice PourMJ()
        {
            Console.WriteLine("Pouring Mango juice");
            return new Juice();
        }

        private static void ApplyJam(Toast toast) =>
            Console.WriteLine("Putting jam on the toast");

        private static void ApplyButter(Toast toast) =>
            Console.WriteLine("Putting butter on the toast");

        private static async Task<Toast> ToastBreadAsync(int slices)
        {
            for (int slice = 0; slice < slices; slice++)
            {
                Console.WriteLine("Putting a slice of bread in the toaster");
            }
            Console.WriteLine("Start toasting...");
            await Task.Delay(3000);
            Console.WriteLine("Remove toast from toaster");

            return new Toast();
        }

        private static async Task<Poha> FryPohaAsync(int ingrediants)
        {
            Console.WriteLine($"putting {ingrediants} ingrediants in kadhai");
            Console.WriteLine("cooking in kadhai...");
            await Task.Delay(3000);
            for (int ingrediant = 0; ingrediant < ingrediants; ingrediant++)
            {
                Console.WriteLine($"cooking ingrediant {ingrediant}");
            }
            Console.WriteLine("steam poha..");
            await Task.Delay(3000);
            Console.WriteLine("Put poha on plate");

            return new Poha();
        }

        private static async Task<Laddu> MakeLadduAsync(int howMany)
        {
            Console.WriteLine("Warming the pan...");
            await Task.Delay(3000);
            Console.WriteLine($"make {howMany} laddu");
            await Task.Delay(3000);
            Console.WriteLine("Put laddu on plate");

            return new Laddu();
        }

        private static Tea PourTea()
        {
            Console.WriteLine("Pouring tea");
            return new Tea();
        }
    }

    internal class Juice
    {
    }

    internal class Toast
    {
    }

    internal class Poha
    {
    }

    internal class Laddu
    {
    }

    internal class Tea
    {
    }
}