.net 8 parallel sync #203

Author: christiannagel

2_Libs/Parallel/SynchronizationSamples/BarrierSample/BarrierSample.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>

2_Libs/Parallel/SynchronizationSamples/BarrierSample/Program.cs

@@ -80,7 +80,7 @@ private static void CalculationInTask(int jobNumber, int partitionSize, Barrier
 
         for (int i = 0; i < loops; i++)
         {
-            List<string> data = new(coll[i]);
+            List<string> data = [.. coll[i]];
 
             int start = jobNumber * partitionSize;
             int end = start + partitionSize;

2_Libs/Parallel/SynchronizationSamples/EventSample/EventSample.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>

2_Libs/Parallel/SynchronizationSamples/EventSample/Program.cs

@@ -10,7 +10,7 @@
     mEvents[i] = new(false);
     waitHandles[i] = mEvents[i].WaitHandle;
     calcs[i] = new(mEvents[i]);
-    Task.Run(() => calcs[i1].Calculation(i1 + 1, i1 + 3));
+    _ = Task.Run(() => calcs[i1].Calculation(i1 + 1, i1 + 3));
 }
 
 for (int i = 0; i < taskCount; i++)

2_Libs/Parallel/SynchronizationSamples/EventSampleWithCountdownEvent/Calculator.cs

@@ -6,7 +6,6 @@
 
     public Calculator(CountdownEvent ev) => _cEvent = ev;
 
-
     public void Calculation(int x, int y)
     {
         Console.WriteLine($"Task {Task.CurrentId} starts calculation");

2_Libs/Parallel/SynchronizationSamples/EventSampleWithCountdownEvent/EventSampleWithCountdownEvent.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>

2_Libs/Parallel/SynchronizationSamples/EventSampleWithCountdownEvent/Program.cs

@@ -1,13 +1,13 @@
 const int taskCount = 4;
 
-CountdownEvent cEvent = new(taskCount);
+using CountdownEvent cEvent = new(taskCount);
 Calculator[] calcs = new Calculator[taskCount];
 
 for (int i = 0; i < taskCount; i++)
 {
     calcs[i] = new(cEvent);
     int i1 = i;
-    Task.Run(() => calcs[i1].Calculation(i1 + 1, i1 + 3));
+    _ = Task.Run(() => calcs[i1].Calculation(i1 + 1, i1 + 3));
 }
 
 cEvent.Wait();
@@ -17,5 +17,3 @@
 {
     Console.WriteLine($"task for {i}, result: {calcs[i].Result}");
 }
-
-cEvent.Dispose();

2_Libs/Parallel/SynchronizationSamples/LockAcrossAwait/LockAcrossAwait.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>

2_Libs/Parallel/SynchronizationSamples/LockAcrossAwait/Program.cs

@@ -5,7 +5,7 @@ class Program
     static async Task Main()
     {
         await RunUseSemaphoreAsync();
-        await RunUseAsyncSempahoreAsync();
+        await RunUseAsyncSemaphoreAsync();
         Console.ReadLine();
     }
 
@@ -24,7 +24,7 @@ static async Task Main()
     static async Task RunUseSemaphoreAsync()
     {
         Console.WriteLine(nameof(RunUseSemaphoreAsync));
-        string[] messages = { "one", "two", "three", "four", "five", "six" };
+        string[] messages = ["one", "two", "three", "four", "five", "six"];
         Task[] tasks = new Task[messages.Length];
 
         for (int i = 0; i < messages.Length; i++)
@@ -41,9 +41,9 @@ static async Task RunUseSemaphoreAsync()
         Console.WriteLine();
     }
 
-    static async Task RunUseAsyncSempahoreAsync()
+    static async Task RunUseAsyncSemaphoreAsync()
     {
-        Console.WriteLine(nameof(RunUseAsyncSempahoreAsync));
+        Console.WriteLine(nameof(RunUseAsyncSemaphoreAsync));
         string[] messages = { "one", "two", "three", "four", "five", "six" };
         Task[] tasks = new Task[messages.Length];
 
@@ -61,7 +61,7 @@ static async Task RunUseAsyncSempahoreAsync()
         Console.WriteLine();
     }
 
-    private static SemaphoreSlim s_asyncLock = new SemaphoreSlim(1);
+    private static SemaphoreSlim s_asyncLock = new(1);
     static async Task LockWithSemaphore(string title)
     {
         Console.WriteLine($"{title} waiting for lock");
@@ -78,7 +78,7 @@ static async Task LockWithSemaphore(string title)
         }
     }
 
-    private static AsyncSemaphore s_asyncSemaphore = new AsyncSemaphore();
+    private static AsyncSemaphore s_asyncSemaphore = new();
     static async Task UseAsyncSemaphore(string title)
     {
         using (await s_asyncSemaphore.WaitAsync())

2_Libs/Parallel/SynchronizationSamples/ReaderWriterLockSample/ReaderWriter.cs

@@ -1,6 +1,6 @@
 sealed class ReaderWriter : IDisposable
 {
-    private List<int> _items = new() { 0, 1, 2, 3, 4, 5 };
+    private List<int> _items = [0, 1, 2, 3, 4, 5];
     private ReaderWriterLockSlim _rwl = new();
     private bool disposedValue;
 
@@ -24,7 +24,7 @@ public void ReaderMethod(object? reader)
 
     public void WriterMethod(object? writer)
     {
-        Console.WriteLine($"Startring writer {writer}");
+        Console.WriteLine($"Starting writer {writer}");
         try
         {
             while (!_rwl.TryEnterWriteLock(50))