Merge branch 'master' into careminster

Conflicts:
	OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs

OpenSim/Region/ClientStack/Linden/UDP/OpenSimUDPBase.cs

@@ -30,6 +30,7 @@ using System.Net;
 using System.Net.Sockets;
 using System.Threading;
 using log4net;
+using OpenSim.Framework;
 
 namespace OpenMetaverse
 {
@@ -58,6 +59,16 @@ namespace OpenMetaverse
         /// <summary>Flag to process packets asynchronously or synchronously</summary>
         private bool m_asyncPacketHandling;
 
+        /// <summary>
+        /// Pool to use for handling data.  May be null if UsePools = false;
+        /// </summary>
+        protected OpenSim.Framework.Pool<UDPPacketBuffer> m_pool;
+
+        /// <summary>
+        /// Are we to use object pool(s) to reduce memory churn when receiving data?
+        /// </summary>
+        public bool UsePools { get; protected set; }
+
         /// <summary>Returns true if the server is currently listening for inbound packets, otherwise false</summary>
         public bool IsRunningInbound { get; private set; }
 
@@ -70,6 +81,7 @@ namespace OpenMetaverse
         /// </summary>
         /// <param name="bindAddress">Local IP address to bind the server to</param>
         /// <param name="port">Port to listening for incoming UDP packets on</param>
+        /// /// <param name="usePool">Are we to use an object pool to get objects for handing inbound data?</param>
         public OpenSimUDPBase(IPAddress bindAddress, int port)
         {
             m_localBindAddress = bindAddress;
@@ -94,6 +106,11 @@ namespace OpenMetaverse
         /// necessary</remarks>
         public void StartInbound(int recvBufferSize, bool asyncPacketHandling)
         {
+            if (UsePools)
+                m_pool = new Pool<UDPPacketBuffer>(() => new UDPPacketBuffer(), 500);
+            else
+                m_pool = null;
+
             m_asyncPacketHandling = asyncPacketHandling;
 
             if (!IsRunningInbound)
@@ -161,9 +178,12 @@ namespace OpenMetaverse
 
         private void AsyncBeginReceive()
         {
-            // allocate a packet buffer
-            //WrappedObject<UDPPacketBuffer> wrappedBuffer = Pool.CheckOut();
-            UDPPacketBuffer buf = new UDPPacketBuffer();
+            UDPPacketBuffer buf;
+
+            if (UsePools)
+                buf = m_pool.GetObject();
+            else
+                buf = new UDPPacketBuffer();
 
             if (IsRunningInbound)
             {
@@ -227,8 +247,6 @@ namespace OpenMetaverse
 
                 // get the buffer that was created in AsyncBeginReceive
                 // this is the received data
-                //WrappedObject<UDPPacketBuffer> wrappedBuffer = (WrappedObject<UDPPacketBuffer>)iar.AsyncState;
-                //UDPPacketBuffer buffer = wrappedBuffer.Instance;
                 UDPPacketBuffer buffer = (UDPPacketBuffer)iar.AsyncState;
 
                 try
@@ -245,7 +263,8 @@ namespace OpenMetaverse
                 catch (ObjectDisposedException) { }
                 finally
                 {
-                    //wrappedBuffer.Dispose();
+                    if (UsePools)
+                        m_pool.ReturnObject(buffer);
 
                     // Synchronous mode waits until the packet callback completes
                     // before starting the receive to fetch another packet