added chapter 4 sample project

cwoodruff · May 24, 2024 · e5c7f72 · e5c7f72
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diff --git a/src/Ch04/ch04.sln b/src/Ch04/ch04.sln
@@ -1,8 +1,16 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "csharp-async-example", "csharp-async-example\csharp-async-example.csproj", "{0CC619F2-A17E-46DE-9CCD-BA51E9C145F9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{0CC619F2-A17E-46DE-9CCD-BA51E9C145F9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0CC619F2-A17E-46DE-9CCD-BA51E9C145F9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0CC619F2-A17E-46DE-9CCD-BA51E9C145F9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0CC619F2-A17E-46DE-9CCD-BA51E9C145F9}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
 EndGlobal
diff --git a/src/Ch04/csharp-async-example/AsynchronousChef.cs b/src/Ch04/csharp-async-example/AsynchronousChef.cs
@@ -0,0 +1,83 @@
+namespace csharp_async_example;
+
+public class AsynchronousChef
+{
+    private int DelayMultiply { get; set; } = 100;
+
+    public async Task MakeBreakfast()
+    {
+        var waterTask = BoilWater();
+        var eggsTask = BoilEggs();
+        var baconTask = FryBacon();
+        var breadTask = ToastBread();
+
+        await breadTask;
+        await ApplyButter();
+        await ApplyJam();
+
+        await Task.WhenAll(eggsTask, baconTask, waterTask);
+        await PourCoffee();
+        await PourJuice();
+    }
+
+    private async Task PourCoffee()
+    {
+        Console.WriteLine("[Chef] Start pouring coffee");
+        await Task.Delay(5 * DelayMultiply);
+        Console.WriteLine("[Chef] Coffee Ready");
+    }
+
+    private async Task BoilEggs() 
+    {
+        Console.WriteLine("[Chef] Put Eggs into boiling water");
+        await Task.Delay(70 * DelayMultiply);
+        Console.WriteLine("[Chef] Eggs Boiled");
+    }
+
+    private async Task FryBacon()
+    {
+        Console.WriteLine("[Chef] Throw bacon in pan");
+        await Task.Delay(40 * DelayMultiply);
+        Console.WriteLine("[Chef] Bacon Fried");
+    }
+
+    private async Task ToastBread()
+    {
+        Console.WriteLine("[Chef] Put bread in toaster");
+        await Task.Delay(20 * DelayMultiply);
+        Console.WriteLine("[Chef] Bread Toasted");
+    }
+
+    private async Task ApplyButter()
+    {
+        Console.WriteLine("[Chef] Start spreading Butter");
+        await Task.Delay(15 * DelayMultiply);
+        Console.WriteLine("[Chef] Butter applied");
+    }
+
+    private async Task ApplyJam()
+    {
+        Console.WriteLine("[Chef] Start spreading Jam");
+        await Task.Delay(15 * DelayMultiply);
+        Console.WriteLine("[Chef] Jam applied");
+    }
+
+    public async Task PourJuice()
+    {
+        Console.WriteLine("[Chef] Start pouring Juice");
+        await Task.Delay(5 * DelayMultiply);
+        Console.WriteLine("[Chef] Juice Ready");
+    }
+
+    private async Task BoilWater()
+    {
+        Console.WriteLine("[Chef] Set coffee water to boil");
+        await Task.Delay(200 * DelayMultiply);
+        Console.WriteLine("[Chef] Coffee Water is boiled");
+    }
+
+    public async Task<string> TellAJoke()
+    {
+        return "Joke";
+    }
+}
diff --git a/src/Ch04/csharp-async-example/Program.cs b/src/Ch04/csharp-async-example/Program.cs
@@ -0,0 +1,53 @@
+using System.Diagnostics;
+
+namespace csharp_async_example;
+
+public abstract class Program
+{
+    private static Stopwatch? Stopwatch { get; set; }
+
+    static void Main(string[] args)
+    {
+        Stopwatch = new Stopwatch();
+        Stopwatch.Start();
+        Console.WriteLine($"[Kitchen] Started making breakfast - Synchronous Chef");
+
+        MakeBreakfastWithSynchronousChef();
+
+        Console.WriteLine($"[Kitchen] Breakfast done in '{Stopwatch.Elapsed.Seconds}'s '{Stopwatch.Elapsed.Milliseconds}'ms");
+        Stopwatch.Restart();
+
+        Console.WriteLine("---");
+        Console.WriteLine($"[Kitchen] Started making breakfast - Asynchronous Chef");
+
+        MakeBreakfastWithAsynchronousChef().Wait();
+
+        Console.WriteLine($"[Kitchen] Breakfast done in '{Stopwatch.Elapsed.Seconds}'s '{Stopwatch.Elapsed.Milliseconds}'ms");
+    }
+
+    static void MakeBreakfastWithSynchronousChef()
+    {
+        var chef = new SynchronousChef();
+        chef.MakeBreakfast();
+    }
+
+    static async Task MakeBreakfastWithAsynchronousChef()
+    {
+        var chef = new AsynchronousChef();
+        await chef.MakeBreakfast();
+    }
+
+    static async Task MakeBreakfastAndDisturbChef()
+    {
+        var chef = new AsynchronousChef();
+        var breakfastTask = chef.MakeBreakfast();
+
+        Task.Delay(1500).Wait();
+        Console.WriteLine($"[Kitchen] a joke from chef: '{chef.TellAJoke().Result}'");
+
+        Task.Delay(9000).Wait();
+        chef.PourJuice().Wait();
+
+        await breakfastTask;
+    }
+}
diff --git a/src/Ch04/csharp-async-example/SynchronousChef.cs b/src/Ch04/csharp-async-example/SynchronousChef.cs
@@ -0,0 +1,74 @@
+namespace csharp_async_example;
+
+public class SynchronousChef
+{
+    private int DelayMultiply { get; set; } = 100;
+
+    public void MakeBreakfast()
+    {
+        BoilWater();
+        BoilEggs();
+        FryBacon();
+        ToastBread();
+        ApplyButter();
+        ApplyJam();
+        PourCoffee();
+        PourJuice();
+    }
+
+    private void PourCoffee()
+    {
+        Console.WriteLine("[Chef] Start pouring coffee");
+        Thread.Sleep(5 * DelayMultiply);
+        Console.WriteLine("[Chef] Coffee Ready");
+    }
+
+    private void BoilEggs()
+    {
+        Console.WriteLine("[Chef] Put Eggs into boiling water");
+        Thread.Sleep(70 * DelayMultiply);
+        Console.WriteLine("[Chef] Eggs Boiled");
+    }
+
+    private void FryBacon()
+    {
+        Console.WriteLine("[Chef] Throw bacon in pan");
+        Thread.Sleep(40 * DelayMultiply);
+        Console.WriteLine("[Chef] Bacon Fried");
+    }
+
+    private void ToastBread()
+    {
+        Console.WriteLine("[Chef] Put bread in toaster");
+        Thread.Sleep(20 * DelayMultiply);
+        Console.WriteLine("[Chef] Bread Toasted");
+    }
+
+    private void ApplyButter()
+    {
+        Console.WriteLine("[Chef] Start spreading Butter");
+        Thread.Sleep(15 * DelayMultiply);
+        Console.WriteLine("[Chef] Butter applied");
+    }
+
+    private void ApplyJam()
+    {
+        Console.WriteLine("[Chef] Start spreading Jam");
+        Thread.Sleep(15 * DelayMultiply);
+        Console.WriteLine("[Chef] Jam applied");
+    }
+
+    private void PourJuice()
+    {
+        Console.WriteLine("[Chef] Start pouring Juice");
+        Thread.Sleep(5 * DelayMultiply);
+        Console.WriteLine("[Chef] Juice Ready");
+    }
+
+    private void BoilWater()
+    {
+        Console.WriteLine("[Chef] Set coffee water to boil");
+        Thread.Sleep(200 * DelayMultiply);
+        Console.WriteLine("[Chef] Coffee Water is boiled");
+    }
+}
diff --git a/src/Ch04/csharp-async-example/csharp-async-example.csproj b/src/Ch04/csharp-async-example/csharp-async-example.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <RootNamespace>csharp_async_example</RootNamespace>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>