extensibility...

src/CodeProject.ObjectPool/Core/PooledObjectInfo.cs

@@ -34,6 +34,11 @@ public sealed class PooledObjectInfo
         /// </summary>
         public int Id { get; internal set; }
 
+        /// <summary>
+        ///   Payload which can be used to add custom information to a pooled object.
+        /// </summary>
+        public object Payload { get; set; }
+
         /// <summary>
         ///   Enumeration that is being managed by the pool to describe the object state - primary
         ///   used to void cases where the resources are being releases twice.

src/CodeProject.ObjectPool/ObjectPool.cs

@@ -11,6 +11,7 @@
 using CodeProject.ObjectPool.Core;
 using PommaLabs.Thrower;
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 
@@ -240,6 +241,28 @@ void IObjectPoolHandle.ReturnObjectToPool(PooledObject objectToReturnToPool, boo
 
         #endregion Pool Operations
 
+        #region Extensibility
+
+        /// <summary>
+        ///   All objects currently stored inside the pool.
+        /// </summary>
+        protected IEnumerable<T> PooledObjects
+        {
+            get
+            {
+                for (var i = 0; i <= _pooledObjects.Length; ++i)
+                {
+                    var item = _pooledObjects[i];
+                    if (item != null)
+                    {
+                        yield return item;
+                    }
+                }
+            }
+        }
+
+        #endregion Extensibility
+
         #region Low-level Pooling
 
         /// <summary>