From 134f86e8d5c414409631b25b8c6f0ee45fbd8631 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Thu, 3 Nov 2016 21:44:39 +1000
Subject: Initial update to OpenSim 0.8.2.1 source code.

---
 ThirdParty/SmartThreadPool/WorkItemFactory.cs | 628 +++++++++++++-------------
 1 file changed, 319 insertions(+), 309 deletions(-)

(limited to 'ThirdParty/SmartThreadPool/WorkItemFactory.cs')

diff --git a/ThirdParty/SmartThreadPool/WorkItemFactory.cs b/ThirdParty/SmartThreadPool/WorkItemFactory.cs
index dfcb54f..16ccd81 100644
--- a/ThirdParty/SmartThreadPool/WorkItemFactory.cs
+++ b/ThirdParty/SmartThreadPool/WorkItemFactory.cs
@@ -1,148 +1,152 @@
-// Ami Bar
-// amibar@gmail.com
-
 using System;
 
 namespace Amib.Threading.Internal
 {
-    #region WorkItemFactory class 
-
-    public class WorkItemFactory
-    {
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
+	#region WorkItemFactory class 
+
+	public class WorkItemFactory
+	{
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+		/// <param name="workItemsGroup">The WorkItemsGroup of this workitem</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback)
+		{
+			return CreateWorkItem(workItemsGroup, wigStartInfo, callback, null);
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The WorkItemsGroup of this workitem</param>
         /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback)
-        {
-            return CreateWorkItem(workItemsGroup, wigStartInfo, callback, null);
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="workItemPriority">The priority of the work item</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            WorkItemPriority workItemPriority)
-        {
-            return CreateWorkItem(workItemsGroup, wigStartInfo, callback, null, workItemPriority);
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="workItemPriority">The priority of the work item</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			WorkItemPriority workItemPriority)
+		{
+			return CreateWorkItem(workItemsGroup, wigStartInfo, callback, null, workItemPriority);
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The WorkItemsGroup of this workitem</param>
         /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="workItemInfo">Work item info</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemInfo workItemInfo, 
-            WorkItemCallback callback)
-        {
-            return CreateWorkItem(
-                workItemsGroup,
-                wigStartInfo,
-                workItemInfo, 
-                callback, 
-                null);
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
+		/// <param name="workItemInfo">Work item info</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemInfo workItemInfo, 
+			WorkItemCallback callback)
+		{
+			return CreateWorkItem(
+				workItemsGroup,
+				wigStartInfo,
+				workItemInfo, 
+				callback, 
+				null);
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The WorkItemsGroup of this workitem</param>
         /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            object state)
-        {
-            ValidateCallback(callback);
-
-            WorkItemInfo workItemInfo = new WorkItemInfo();
-            workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
-            workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
-            workItemInfo.PostExecuteWorkItemCallback = wigStartInfo.PostExecuteWorkItemCallback;
-            workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
-            workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
-
-            WorkItem workItem = new WorkItem(
-                workItemsGroup,
-                workItemInfo,
-                callback, 
-                state);
-            return workItem;
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <param name="workItemPriority">The work item priority</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            object state, 
-            WorkItemPriority workItemPriority)
-        {
-            ValidateCallback(callback);
-
-            WorkItemInfo workItemInfo = new WorkItemInfo();
-            workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
-            workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
-            workItemInfo.PostExecuteWorkItemCallback = wigStartInfo.PostExecuteWorkItemCallback;
-            workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
-            workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
-            workItemInfo.WorkItemPriority = workItemPriority;
-
-            WorkItem workItem = new WorkItem(
-                workItemsGroup,
-                workItemInfo,
-                callback, 
-                state);
-
-            return workItem;
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="workItemInfo">Work item information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <returns>Returns a work item</returns>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			object state)
+		{
+			ValidateCallback(callback);
+            
+			WorkItemInfo workItemInfo = new WorkItemInfo();
+			workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
+			workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
+			workItemInfo.PostExecuteWorkItemCallback = wigStartInfo.PostExecuteWorkItemCallback;
+			workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
+			workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
+            workItemInfo.WorkItemPriority = wigStartInfo.WorkItemPriority;
+
+			WorkItem workItem = new WorkItem(
+				workItemsGroup,
+				workItemInfo,
+				callback, 
+				state);
+			return workItem;
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+		/// <param name="workItemsGroup">The work items group</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <param name="workItemPriority">The work item priority</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			object state, 
+			WorkItemPriority workItemPriority)
+		{
+			ValidateCallback(callback);
+
+			WorkItemInfo workItemInfo = new WorkItemInfo();
+			workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
+			workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
+			workItemInfo.PostExecuteWorkItemCallback = wigStartInfo.PostExecuteWorkItemCallback;
+			workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
+			workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
+			workItemInfo.WorkItemPriority = workItemPriority;
+
+			WorkItem workItem = new WorkItem(
+				workItemsGroup,
+				workItemInfo,
+				callback, 
+				state);
+
+			return workItem;
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The work items group</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="workItemInfo">Work item information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <returns>Returns a work item</returns>
         public static WorkItem CreateWorkItem(
             IWorkItemsGroup workItemsGroup,
             WIGStartInfo wigStartInfo,
-            WorkItemInfo workItemInfo, 
-            WorkItemCallback callback, 
+            WorkItemInfo workItemInfo,
+            WorkItemCallback callback,
             object state)
         {
             ValidateCallback(callback);
@@ -151,183 +155,189 @@ namespace Amib.Threading.Internal
             WorkItem workItem = new WorkItem(
                 workItemsGroup,
                 new WorkItemInfo(workItemInfo),
-                callback, 
+                callback,
                 state);
 
             return workItem;
         }
 
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <param name="postExecuteWorkItemCallback">
-        /// A delegate to call after the callback completion
-        /// </param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            object state,
-            PostExecuteWorkItemCallback postExecuteWorkItemCallback)
-        {
-            ValidateCallback(callback);
-            ValidateCallback(postExecuteWorkItemCallback);
-
-            WorkItemInfo workItemInfo = new WorkItemInfo();
-            workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
-            workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
-            workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
-            workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
-            workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
-
-            WorkItem workItem = new WorkItem(
-                workItemsGroup,
-                workItemInfo,
-                callback, 
-                state);
-
-            return workItem;
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <param name="postExecuteWorkItemCallback">
-        /// A delegate to call after the callback completion
-        /// </param>
-        /// <param name="workItemPriority">The work item priority</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            object state,
-            PostExecuteWorkItemCallback postExecuteWorkItemCallback,
-            WorkItemPriority workItemPriority)
-        {
-            ValidateCallback(callback);
-            ValidateCallback(postExecuteWorkItemCallback);
-
-            WorkItemInfo workItemInfo = new WorkItemInfo();
-            workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
-            workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
-            workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
-            workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
-            workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
-            workItemInfo.WorkItemPriority = workItemPriority;
-
-            WorkItem workItem = new WorkItem(
-                workItemsGroup,
-                workItemInfo,
-                callback, 
-                state);
-
-            return workItem;
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <param name="postExecuteWorkItemCallback">
-        /// A delegate to call after the callback completion
-        /// </param>
-        /// <param name="callToPostExecute">Indicates on which cases to call to the post execute callback</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            object state,
-            PostExecuteWorkItemCallback postExecuteWorkItemCallback,
-            CallToPostExecute callToPostExecute)
-        {
-            ValidateCallback(callback);
-            ValidateCallback(postExecuteWorkItemCallback);
-
-            WorkItemInfo workItemInfo = new WorkItemInfo();
-            workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
-            workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
-            workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
-            workItemInfo.CallToPostExecute = callToPostExecute;
-            workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
-
-            WorkItem workItem = new WorkItem(
-                workItemsGroup,
-                workItemInfo,
-                callback, 
-                state);
-
-            return workItem;
-        }
-
-        /// <summary>
-        /// Create a new work item
-        /// </summary>
-        /// <param name="wigStartInfo">Work item group start information</param>
-        /// <param name="callback">A callback to execute</param>
-        /// <param name="state">
-        /// The context object of the work item. Used for passing arguments to the work item. 
-        /// </param>
-        /// <param name="postExecuteWorkItemCallback">
-        /// A delegate to call after the callback completion
-        /// </param>
-        /// <param name="callToPostExecute">Indicates on which cases to call to the post execute callback</param>
-        /// <param name="workItemPriority">The work item priority</param>
-        /// <returns>Returns a work item</returns>
-        public static WorkItem CreateWorkItem(
-            IWorkItemsGroup workItemsGroup,
-            WIGStartInfo wigStartInfo,
-            WorkItemCallback callback, 
-            object state,
-            PostExecuteWorkItemCallback postExecuteWorkItemCallback,
-            CallToPostExecute callToPostExecute,
-            WorkItemPriority workItemPriority)
-        {
-
-            ValidateCallback(callback);
-            ValidateCallback(postExecuteWorkItemCallback);
-
-            WorkItemInfo workItemInfo = new WorkItemInfo();
-            workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
-            workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
-            workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
-            workItemInfo.CallToPostExecute = callToPostExecute;
-            workItemInfo.WorkItemPriority = workItemPriority;
-            workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
-
-            WorkItem workItem = new WorkItem(
-                workItemsGroup,
-                workItemInfo,
-                callback, 
-                state);
-            
-            return workItem;
-        }
-
-        private static void ValidateCallback(Delegate callback)
-        {
-            if(callback.GetInvocationList().Length > 1)
-            {
-                throw new NotSupportedException("SmartThreadPool doesn't support delegates chains");
-            }
-        }
-    }
-
-    #endregion
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The work items group</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <param name="postExecuteWorkItemCallback">
+		/// A delegate to call after the callback completion
+		/// </param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			object state,
+			PostExecuteWorkItemCallback postExecuteWorkItemCallback)
+		{
+			ValidateCallback(callback);
+			ValidateCallback(postExecuteWorkItemCallback);
+
+			WorkItemInfo workItemInfo = new WorkItemInfo();
+			workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
+			workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
+			workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
+			workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
+			workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
+            workItemInfo.WorkItemPriority = wigStartInfo.WorkItemPriority;
+
+			WorkItem workItem = new WorkItem(
+				workItemsGroup,
+				workItemInfo,
+				callback, 
+				state);
+
+			return workItem;
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The work items group</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <param name="postExecuteWorkItemCallback">
+		/// A delegate to call after the callback completion
+		/// </param>
+		/// <param name="workItemPriority">The work item priority</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			object state,
+			PostExecuteWorkItemCallback postExecuteWorkItemCallback,
+			WorkItemPriority workItemPriority)
+		{
+			ValidateCallback(callback);
+			ValidateCallback(postExecuteWorkItemCallback);
+
+			WorkItemInfo workItemInfo = new WorkItemInfo();
+			workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
+			workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
+			workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
+			workItemInfo.CallToPostExecute = wigStartInfo.CallToPostExecute;
+			workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
+			workItemInfo.WorkItemPriority = workItemPriority;
+
+			WorkItem workItem = new WorkItem(
+				workItemsGroup,
+				workItemInfo,
+				callback, 
+				state);
+
+			return workItem;
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The work items group</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <param name="postExecuteWorkItemCallback">
+		/// A delegate to call after the callback completion
+		/// </param>
+		/// <param name="callToPostExecute">Indicates on which cases to call to the post execute callback</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			object state,
+			PostExecuteWorkItemCallback postExecuteWorkItemCallback,
+			CallToPostExecute callToPostExecute)
+		{
+			ValidateCallback(callback);
+			ValidateCallback(postExecuteWorkItemCallback);
+
+			WorkItemInfo workItemInfo = new WorkItemInfo();
+			workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
+			workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
+			workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
+			workItemInfo.CallToPostExecute = callToPostExecute;
+			workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
+            workItemInfo.WorkItemPriority = wigStartInfo.WorkItemPriority;
+
+			WorkItem workItem = new WorkItem(
+				workItemsGroup,
+				workItemInfo,
+				callback, 
+				state);
+
+			return workItem;
+		}
+
+		/// <summary>
+		/// Create a new work item
+		/// </summary>
+        /// <param name="workItemsGroup">The work items group</param>
+		/// <param name="wigStartInfo">Work item group start information</param>
+		/// <param name="callback">A callback to execute</param>
+		/// <param name="state">
+		/// The context object of the work item. Used for passing arguments to the work item. 
+		/// </param>
+		/// <param name="postExecuteWorkItemCallback">
+		/// A delegate to call after the callback completion
+		/// </param>
+		/// <param name="callToPostExecute">Indicates on which cases to call to the post execute callback</param>
+		/// <param name="workItemPriority">The work item priority</param>
+		/// <returns>Returns a work item</returns>
+		public static WorkItem CreateWorkItem(
+			IWorkItemsGroup workItemsGroup,
+			WIGStartInfo wigStartInfo,
+			WorkItemCallback callback, 
+			object state,
+			PostExecuteWorkItemCallback postExecuteWorkItemCallback,
+			CallToPostExecute callToPostExecute,
+			WorkItemPriority workItemPriority)
+		{
+
+			ValidateCallback(callback);
+			ValidateCallback(postExecuteWorkItemCallback);
+
+			WorkItemInfo workItemInfo = new WorkItemInfo();
+			workItemInfo.UseCallerCallContext = wigStartInfo.UseCallerCallContext;
+			workItemInfo.UseCallerHttpContext = wigStartInfo.UseCallerHttpContext;
+			workItemInfo.PostExecuteWorkItemCallback = postExecuteWorkItemCallback;
+			workItemInfo.CallToPostExecute = callToPostExecute;
+			workItemInfo.WorkItemPriority = workItemPriority;
+			workItemInfo.DisposeOfStateObjects = wigStartInfo.DisposeOfStateObjects;
+
+			WorkItem workItem = new WorkItem(
+				workItemsGroup,
+				workItemInfo,
+				callback, 
+				state);
+			
+			return workItem;
+		}
+
+		private static void ValidateCallback(Delegate callback)
+		{
+            if (callback != null && callback.GetInvocationList().Length > 1)
+			{
+				throw new NotSupportedException("SmartThreadPool doesn't support delegates chains");
+			}
+		}
+	}
+
+	#endregion
 }
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