perf: FrameworkProperties for type performance

src/Uno.UI/UI/Xaml/DependencyProperty.Dictionary.FrameworkPropertiesForType.cs

@@ -0,0 +1,44 @@
+#nullable enable
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Windows.UI.Xaml;
+using Uno.Extensions;
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+using Uno;
+using System.Threading;
+using Uno.Collections;
+
+using _Key = Uno.CachedTuple<System.Type, Windows.UI.Xaml.FrameworkPropertyMetadataOptions>;
+
+namespace Windows.UI.Xaml
+{
+	public sealed partial class DependencyProperty
+	{
+		private class FrameworkPropertiesForTypeDictionary
+		{
+			private readonly HashtableEx _entries = new HashtableEx();
+
+			internal bool TryGetValue(_Key key, out DependencyProperty[]? result)
+			{
+				if (_entries.TryGetValue(key, out var value))
+				{
+					result = (DependencyProperty[])value!;
+
+					return true;
+				}
+
+				result = null;
+				return false;
+			}
+
+			internal void Add(_Key key, DependencyProperty[] value)
+				=> _entries.Add(key, value);
+
+			internal void Clear() => _entries.Clear();
+		}
+	}
+}

src/Uno.UI/UI/Xaml/DependencyProperty.cs

@@ -32,7 +32,7 @@ public sealed partial class DependencyProperty
 		private readonly static TypeToPropertiesDictionary _getPropertiesForType = new TypeToPropertiesDictionary();
 		private readonly static NameToPropertyDictionary _getPropertyCache = new NameToPropertyDictionary();
 
-		private readonly static Dictionary<CachedTuple<Type, FrameworkPropertyMetadataOptions>, DependencyProperty[]> _getFrameworkPropertiesForType = new Dictionary<CachedTuple<Type, FrameworkPropertyMetadataOptions>, DependencyProperty[]>(CachedTuple<Type, FrameworkPropertyMetadataOptions>.Comparer);
+		private readonly static FrameworkPropertiesForTypeDictionary _getFrameworkPropertiesForType = new FrameworkPropertiesForTypeDictionary();
 
 		private readonly PropertyMetadata _ownerTypeMetadata; // For perf consideration, we keep direct ref the metadata for the owner type
 		private readonly PropertyMetadataDictionary _metadata = new PropertyMetadataDictionary();