Initial Commit

Common/ResourcePool.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Controls;
+using System.Diagnostics;
+
+namespace Microsoft.Research.DynamicDataDisplay.Common
+{
+	[DebuggerDisplay("Count = {Count}")]
+	internal sealed class ResourcePool<T>
+	{
+		private readonly List<T> pool = new List<T>();
+
+		public T Get()
+		{
+			T item;
+
+			if (pool.Count < 1)
+			{
+				item = default(T);
+			}
+			else
+			{
+				int index = pool.Count - 1;
+				item = pool[index];
+				pool.RemoveAt(index);
+			}
+
+			return item;
+		}
+
+		public void Put(T item)
+		{
+			if (item == null)
+				throw new ArgumentNullException("item");
+
+#if DEBUG
+			if (pool.IndexOf(item) != -1)
+				Debugger.Break();
+#endif
+
+			pool.Add(item);
+		}
+
+		public int Count
+		{
+			get { return pool.Count; }
+		}
+
+		public void Clear()
+		{
+			pool.Clear();
+		}
+	}
+}