Cleanup of no longer needed classes. ParallelSynchronizationContext/-Pool renamed to IndexOfSynchronizationContext/-Pool.

Recyclable.Collections/Parallel/IndexOfSynchronizationContext.cs

@@ -0,0 +1,43 @@
+namespace Recyclable.Collections.Parallel
+{
+	public sealed class IndexOfSynchronizationContext : IDisposable
+	{
+		internal bool _isItemFound;
+
+		public readonly Barrier AllDoneSignal;
+		public long FoundItemIndex;
+		public Exception? Exception;
+		internal bool _returned;
+
+		public IndexOfSynchronizationContext()
+		{
+			AllDoneSignal = new(0);
+		}
+
+		public IndexOfSynchronizationContext(int participantCount)
+		{
+			AllDoneSignal = new(participantCount);
+		}
+
+		public void SetItemFound()
+		{
+			_isItemFound = true;
+		}
+
+		public bool IsItemFound => _isItemFound;
+
+		public void Dispose()
+		{
+			if (!_returned)
+			{
+				_returned = true;
+				IndexOfSynchronizationContextPool.Shared.Return(this);
+			}
+			else
+			{
+				AllDoneSignal.Dispose();
+				GC.SuppressFinalize(this);
+			}
+		}
+	}
+}