5 files changed, 88 insertions, 37 deletions

diff --git a/OpenSim/Region/ClientStack/Linden/Caps/EventQueue/EventQueueGetModule.cs b/OpenSim/Region/ClientStack/Linden/Caps/EventQueue/EventQueueGetModule.cs
index e113c60..132546b 100644
--- a/OpenSim/Region/ClientStack/Linden/Caps/EventQueue/EventQueueGetModule.cs
+++ b/OpenSim/Region/ClientStack/Linden/Caps/EventQueue/EventQueueGetModule.cs
@@ -94,7 +94,7 @@ namespace OpenSim.Region.ClientStack.Linden
                 
                 //scene.CommsManager.HttpServer.AddLLSDHandler("/CAPS/EQG/", EventQueueFallBack);
 
-                scene.EventManager.OnNewClient += OnNewClient;
+//                scene.EventManager.OnNewClient += OnNewClient;
 
                 // TODO: Leaving these open, or closing them when we
                 // become a child is incorrect. It messes up TP in a big
@@ -102,6 +102,7 @@ namespace OpenSim.Region.ClientStack.Linden
                 // circuit is there.
 
                 scene.EventManager.OnClientClosed += ClientClosed;
+                
                 scene.EventManager.OnMakeChildAgent += MakeChildAgent;
                 scene.EventManager.OnRegisterCaps += OnRegisterCaps;
 
@@ -226,16 +227,6 @@ namespace OpenSim.Region.ClientStack.Linden
 
         #endregion
 
-        private void OnNewClient(IClientAPI client)
-        {
-            //client.OnLogout += ClientClosed;
-        }
-
-//        private void ClientClosed(IClientAPI client)
-//        {
-//            ClientClosed(client.AgentId);
-//        }
-
         private void ClientClosed(UUID agentID, Scene scene)
         {
 //            m_log.DebugFormat("[EVENTQUEUE]: Closed client {0} in region {1}", agentID, m_scene.RegionInfo.RegionName);
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
index 6ccabf1..d04bd96 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
@@ -47,6 +47,7 @@ using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
 using Timer = System.Timers.Timer;
 using AssetLandmark = OpenSim.Framework.AssetLandmark;
+using RegionFlags = OpenMetaverse.RegionFlags;
 using Nini.Config;
 
 using System.IO;
@@ -3983,7 +3984,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock> blocks = terseAgentUpdateBlocks.Value;
 
-                ImprovedTerseObjectUpdatePacket packet = new ImprovedTerseObjectUpdatePacket();
+                ImprovedTerseObjectUpdatePacket packet
+                    = (ImprovedTerseObjectUpdatePacket)PacketPool.Instance.GetPacket(PacketType.ImprovedTerseObjectUpdate);
                 packet.RegionData.RegionHandle = m_scene.RegionInfo.RegionHandle;
                 packet.RegionData.TimeDilation = timeDilation;
                 packet.ObjectData = new ImprovedTerseObjectUpdatePacket.ObjectDataBlock[blocks.Count];
@@ -4028,7 +4030,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock> blocks = terseUpdateBlocks.Value;
     
-                ImprovedTerseObjectUpdatePacket packet = new ImprovedTerseObjectUpdatePacket();
+                ImprovedTerseObjectUpdatePacket packet
+                    = (ImprovedTerseObjectUpdatePacket)PacketPool.Instance.GetPacket(
+                        PacketType.ImprovedTerseObjectUpdate);
                 packet.RegionData.RegionHandle = m_scene.RegionInfo.RegionHandle;
                 packet.RegionData.TimeDilation = timeDilation;
                 packet.ObjectData = new ImprovedTerseObjectUpdatePacket.ObjectDataBlock[blocks.Count];
@@ -4036,7 +4040,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 for (int i = 0; i < blocks.Count; i++)
                     packet.ObjectData[i] = blocks[i];
     
-                OutPacket(packet, ThrottleOutPacketType.Task, true);
+                OutPacket(packet, ThrottleOutPacketType.Task, true, delegate(OutgoingPacket oPacket) { ResendPrimUpdates(terseUpdates.Value, oPacket); });
             }
 
             #endregion Packet Sending
@@ -5037,7 +5041,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             Utils.UInt16ToBytes(Utils.FloatToUInt16(angularVelocity.Y, -64.0f, 64.0f), data, pos); pos += 2;
             Utils.UInt16ToBytes(Utils.FloatToUInt16(angularVelocity.Z, -64.0f, 64.0f), data, pos); pos += 2;
 
-            ImprovedTerseObjectUpdatePacket.ObjectDataBlock block = new ImprovedTerseObjectUpdatePacket.ObjectDataBlock();
+            ImprovedTerseObjectUpdatePacket.ObjectDataBlock block
+                = PacketPool.Instance.GetDataBlock<ImprovedTerseObjectUpdatePacket.ObjectDataBlock>();
+            
             block.Data = data;
 
             if (textureEntry != null && textureEntry.Length > 0)
@@ -11949,7 +11955,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     logPacket = false;
                 
                 if (DebugPacketLevel <= 50
-                    & (packet.Type == PacketType.ImprovedTerseObjectUpdate || packet.Type == PacketType.ObjectUpdate))
+                    && (packet.Type == PacketType.ImprovedTerseObjectUpdate || packet.Type == PacketType.ObjectUpdate))
                     logPacket = false;
 
                 if (DebugPacketLevel <= 25 && packet.Type == PacketType.ObjectPropertiesFamily)
@@ -12481,7 +12487,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 ushort timeDilation = Utils.FloatToUInt16(TIME_DILATION, 0.0f, 1.0f);
 
 
-                ImprovedTerseObjectUpdatePacket packet = new ImprovedTerseObjectUpdatePacket();
+                ImprovedTerseObjectUpdatePacket packet
+                    = (ImprovedTerseObjectUpdatePacket)PacketPool.Instance.GetPacket(
+                        PacketType.ImprovedTerseObjectUpdate);
+
                 packet.RegionData.RegionHandle = m_scene.RegionInfo.RegionHandle;
                 packet.RegionData.TimeDilation = timeDilation;
                 packet.ObjectData = new ImprovedTerseObjectUpdatePacket.ObjectDataBlock[1];
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
index b3db064..97b79ce 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
@@ -100,9 +100,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         /// <summary>The measured resolution of Environment.TickCount</summary>
         public readonly float TickCountResolution;
+
         /// <summary>Number of prim updates to put on the queue each time the 
         /// OnQueueEmpty event is triggered for updates</summary>
         public readonly int PrimUpdatesPerCallback;
+
         /// <summary>Number of texture packets to put on the queue each time the
         /// OnQueueEmpty event is triggered for textures</summary>
         public readonly int TextureSendLimit;
@@ -124,28 +126,37 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         
         /// <summary>Manages authentication for agent circuits</summary>
         private AgentCircuitManager m_circuitManager;
+
         /// <summary>Reference to the scene this UDP server is attached to</summary>
         protected Scene m_scene;
+
         /// <summary>The X/Y coordinates of the scene this UDP server is attached to</summary>
         private Location m_location;
+
         /// <summary>The size of the receive buffer for the UDP socket. This value
         /// is passed up to the operating system and used in the system networking
         /// stack. Use zero to leave this value as the default</summary>
         private int m_recvBufferSize;
+
         /// <summary>Flag to process packets asynchronously or synchronously</summary>
         private bool m_asyncPacketHandling;
+
         /// <summary>Tracks whether or not a packet was sent each round so we know
         /// whether or not to sleep</summary>
         private bool m_packetSent;
 
         /// <summary>Environment.TickCount of the last time that packet stats were reported to the scene</summary>
         private int m_elapsedMSSinceLastStatReport = 0;
+
         /// <summary>Environment.TickCount of the last time the outgoing packet handler executed</summary>
         private int m_tickLastOutgoingPacketHandler;
+
         /// <summary>Keeps track of the number of elapsed milliseconds since the last time the outgoing packet handler looped</summary>
         private int m_elapsedMSOutgoingPacketHandler;
+
         /// <summary>Keeps track of the number of 100 millisecond periods elapsed in the outgoing packet handler executed</summary>
         private int m_elapsed100MSOutgoingPacketHandler;
+
         /// <summary>Keeps track of the number of 500 millisecond periods elapsed in the outgoing packet handler executed</summary>
         private int m_elapsed500MSOutgoingPacketHandler;
 
@@ -425,6 +436,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 byte[] data = packet.ToBytes();
                 SendPacketData(udpClient, data, packet.Type, category, method);
             }
+
+            PacketPool.Instance.ReturnPacket(packet);
         }
 
         /// <summary>
@@ -742,7 +755,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             try
             {
-                packet = Packet.BuildPacket(buffer.Data, ref packetEnd,
+//                packet = Packet.BuildPacket(buffer.Data, ref packetEnd,
+//                    // Only allocate a buffer for zerodecoding if the packet is zerocoded
+//                    ((buffer.Data[0] & Helpers.MSG_ZEROCODED) != 0) ? new byte[4096] : null);
+                packet = PacketPool.Instance.GetPacket(buffer.Data, ref packetEnd,
                     // Only allocate a buffer for zerodecoding if the packet is zerocoded
                     ((buffer.Data[0] & Helpers.MSG_ZEROCODED) != 0) ? new byte[4096] : null);
             }
@@ -757,11 +773,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                 return; // Drop short packet
             }
-            catch(Exception e)
+            catch (Exception e)
             {
                 if (m_malformedCount < 100)
                     m_log.DebugFormat("[LLUDPSERVER]: Dropped malformed packet: " + e.ToString());
+
                 m_malformedCount++;
+
                 if ((m_malformedCount % 100000) == 0)
                     m_log.DebugFormat("[LLUDPSERVER]: Received {0} malformed packets so far, probable network attack.", m_malformedCount);
             }
@@ -1169,20 +1187,20 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         {
             IClientAPI client = null;
 
-            // In priciple there shouldn't be more than one thread here, ever.
-            // But in case that happens, we need to synchronize this piece of code
-            // because it's too important
-            lock (this) 
+            // We currently synchronize this code across the whole scene to avoid issues such as
+            // http://opensimulator.org/mantis/view.php?id=5365  However, once locking per agent circuit can be done
+            // consistently, this lock could probably be removed.
+            lock (this)
             {
                 if (!m_scene.TryGetClient(agentID, out client))
                 {
                     LLUDPClient udpClient = new LLUDPClient(this, ThrottleRates, m_throttle, circuitCode, agentID, remoteEndPoint, m_defaultRTO, m_maxRTO);
-
+    
                     client = new LLClientView(m_scene, this, udpClient, sessionInfo, agentID, sessionID, circuitCode);
                     client.OnLogout += LogoutHandler;
-
+    
                     ((LLClientView)client).DisableFacelights = m_disableFacelights;
-
+    
                     client.Start();
                 }
             }
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/PacketPool.cs b/OpenSim/Region/ClientStack/Linden/UDP/PacketPool.cs
index fc9406b..71f6fe1 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/PacketPool.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/PacketPool.cs
@@ -31,6 +31,7 @@ using System.Reflection;
 using OpenMetaverse;
 using OpenMetaverse.Packets;
 using log4net;
+using OpenSim.Framework.Monitoring;
 
 namespace OpenSim.Region.ClientStack.LindenUDP
 {
@@ -43,17 +44,28 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         private bool packetPoolEnabled = true;
         private bool dataBlockPoolEnabled = true;
 
+        private PercentageStat m_packetsReusedStat = new PercentageStat(
+            "PacketsReused",
+            "Packets reused",
+            "clientstack",
+            "packetpool",
+            StatVerbosity.Debug,
+            "Number of packets reused out of all requests to the packet pool");
+
+        private PercentageStat m_blocksReusedStat = new PercentageStat(
+            "BlocksReused",
+            "Blocks reused",
+            "clientstack",
+            "packetpool",
+            StatVerbosity.Debug,
+            "Number of data blocks reused out of all requests to the packet pool");
+
         /// <summary>
         /// Pool of packets available for reuse.
         /// </summary>
         private readonly Dictionary<PacketType, Stack<Packet>> pool = new Dictionary<PacketType, Stack<Packet>>();
 
-        private static Dictionary<Type, Stack<Object>> DataBlocks =
-                new Dictionary<Type, Stack<Object>>();
-
-        static PacketPool()
-        {
-        }
+        private static Dictionary<Type, Stack<Object>> DataBlocks = new Dictionary<Type, Stack<Object>>();
 
         public static PacketPool Instance
         {
@@ -72,8 +84,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             get { return dataBlockPoolEnabled; }
         }
 
+        private PacketPool()
+        {
+            StatsManager.RegisterStat(m_packetsReusedStat);
+            StatsManager.RegisterStat(m_blocksReusedStat);
+        }
+
+        /// <summary>
+        /// Gets a packet of the given type.
+        /// </summary>
+        /// <param name='type'></param>
+        /// <returns>Guaranteed to always return a packet, whether from the pool or newly constructed.</returns>
         public Packet GetPacket(PacketType type)
         {
+            m_packetsReusedStat.Consequent++;
+
             Packet packet;
 
             if (!packetPoolEnabled)
@@ -89,6 +114,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 else
                 {
                     // Recycle old packages
+                    m_packetsReusedStat.Antecedent++;
+
                     packet = (pool[type]).Pop();
                 }
             }
@@ -138,7 +165,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         {
             PacketType type = GetType(bytes);
 
-            Array.Clear(zeroBuffer, 0, zeroBuffer.Length);
+//            Array.Clear(zeroBuffer, 0, zeroBuffer.Length);
 
             int i = 0;
             Packet packet = GetPacket(type);
@@ -185,6 +212,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 switch (packet.Type)
                 {
                     // List pooling packets here
+                    case PacketType.AgentUpdate:
                     case PacketType.PacketAck:
                     case PacketType.ObjectUpdate:
                     case PacketType.ImprovedTerseObjectUpdate:
@@ -211,16 +239,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
-        public static T GetDataBlock<T>() where T: new()
+        public T GetDataBlock<T>() where T: new()
         {
             lock (DataBlocks)
             {
+                m_blocksReusedStat.Consequent++;
+
                 Stack<Object> s;
 
                 if (DataBlocks.TryGetValue(typeof(T), out s))
                 {
                     if (s.Count > 0)
+                    {
+                        m_blocksReusedStat.Antecedent++;
                         return (T)s.Pop();
+                    }
                 }
                 else
                 {
@@ -231,7 +264,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
-        public static void ReturnDataBlock<T>(T block) where T: new()
+        public void ReturnDataBlock<T>(T block) where T: new()
         {
             if (block == null)
                 return;
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/Tests/BasicCircuitTests.cs b/OpenSim/Region/ClientStack/Linden/UDP/Tests/BasicCircuitTests.cs
index 109a8e1..fa9378c 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/Tests/BasicCircuitTests.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/Tests/BasicCircuitTests.cs
@@ -43,7 +43,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
     /// This will contain basic tests for the LindenUDP client stack
     /// </summary>
     [TestFixture]
-    public class BasicCircuitTests
+    public class BasicCircuitTests : OpenSimTestCase
     {
         private Scene m_scene;
         private TestLLUDPServer m_udpServer;
@@ -143,7 +143,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
         public void TestAddClient()
         {
             TestHelpers.InMethod();
-//            XmlConfigurator.Configure();
+//            TestHelpers.EnableLogging();
 
             AddUdpServer();