wip

Ragon.Core/Executor.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+using NLog.LayoutRenderers.Wrappers;
+
+namespace Ragon.Core;
+
+public class Executor: TaskScheduler
+{
+  private ChannelReader<Task> _reader;
+  private ChannelWriter<Task> _writer;
+  private Queue<Task> _pendingTasks;
+  
+  public void Run(Task task)
+  {
+    task.Start(this);
+  }
+
+  public Executor()
+  {
+    var channel = Channel.CreateUnbounded<Task>();
+    _reader = channel.Reader;
+    _writer = channel.Writer;
+
+    _pendingTasks = new Queue<Task>();
+  }
+
+  protected override IEnumerable<Task>? GetScheduledTasks()
+  {
+    throw new NotSupportedException();
+  }
+
+  protected override void QueueTask(Task task)
+  {
+    _writer.TryWrite(task);
+  }
+
+  protected override bool TryExecuteTaskInline(Task task, bool taskWasPreviouslyQueued)
+  {
+    return false;
+  }
+
+  public void Execute()
+  {
+    while (_reader.TryRead(out var task))
+    {
+      TryExecuteTask(task);
+      
+      if (task.Status == TaskStatus.Running)
+        _pendingTasks.Enqueue(task);
+    }
+
+    while (_pendingTasks.TryDequeue(out var task))
+      _writer.TryWrite(task);
+  }
+}