Merge branch 'avination' into careminster

4 files changed, 215 insertions, 144 deletions

diff --git a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
index 1406aae..0c067d7 100644
--- a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
@@ -137,6 +137,9 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
         {
             UUID toAgentID = new UUID(im.toAgentID);
 
+            if (toAgentID == UUID.Zero)
+                return;
+
             // Try root avatar only first
             foreach (Scene scene in m_Scenes)
             {
diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index 538dd5f..486f9d2 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -220,7 +220,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
         /// <param name="sp"></param>
         /// <param name="position"></param>
         /// <param name="lookAt"></param>
-        /// <param name="teleportFlags"></param
+        /// <param name="teleportFlags"></param>
         private void TeleportAgentWithinRegion(ScenePresence sp, Vector3 position, Vector3 lookAt, uint teleportFlags)
         {
             m_log.DebugFormat(
@@ -264,6 +264,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 position.Z = newPosZ;
             }
 
+            if (sp.Flying)
+                teleportFlags |= (uint)TeleportFlags.IsFlying;
+
             m_entityTransferStateMachine.UpdateInTransit(sp.UUID, AgentTransferState.Transferring);
 
             sp.ControllingClient.SendTeleportStart(teleportFlags);
@@ -471,6 +474,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             if (sp.ParentID != (uint)0)
                 sp.StandUp();
 
+            else if (sp.Flying)
+                teleportFlags |= (uint)TeleportFlags.IsFlying;
+
             sp.ControllingClient.SendTeleportStart(teleportFlags);
 
             // the avatar.Close below will clear the child region list. We need this below for (possibly)
@@ -982,7 +988,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             agent.IsInTransit = true;
 
             CrossAgentToNewRegionDelegate d = CrossAgentToNewRegionAsync;
-            d.BeginInvoke(agent, newpos, x, y, neighbourRegion, isFlying, version, CrossAgentToNewRegionCompleted, d);
+            d.BeginInvoke(agent, newpos, neighbourRegion, isFlying, version, CrossAgentToNewRegionCompleted, d);
 
             return true;
         }
@@ -1039,42 +1045,43 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             icon.EndInvoke(iar);
         }
 
+        public bool CrossAgentToNewRegionPrep(ScenePresence agent, GridRegion neighbourRegion)
+        {
+            if (neighbourRegion == null)
+                return false;
+            
+            m_entityTransferStateMachine.SetInTransit(agent.UUID);
+
+            agent.RemoveFromPhysicalScene();
+
+            return true;
+        }
+
         /// <summary>
         /// This Closes child agents on neighbouring regions
         /// Calls an asynchronous method to do so..  so it doesn't lag the sim.
         /// </summary>
         public ScenePresence CrossAgentToNewRegionAsync(
-            ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion,
+            ScenePresence agent, Vector3 pos, GridRegion neighbourRegion,
             bool isFlying, string version)
         {
-            if (neighbourRegion == null)
+            if (!CrossAgentToNewRegionPrep(agent, neighbourRegion))
                 return agent;
 
-            try
-            {
-                m_entityTransferStateMachine.SetInTransit(agent.UUID);
-
-                ulong neighbourHandle = Utils.UIntsToLong((uint)(neighbourx * Constants.RegionSize), (uint)(neighboury * Constants.RegionSize));
-    
-                m_log.DebugFormat(
-                    "[ENTITY TRANSFER MODULE]: Crossing agent {0} {1} to {2}-{3} running version {4}",
-                    agent.Firstname, agent.Lastname, neighbourx, neighboury, version);
-    
-                Scene m_scene = agent.Scene;
-
-                if (!agent.ValidateAttachments())
-                    m_log.DebugFormat(
-                        "[ENTITY TRANSFER MODULE]: Failed validation of all attachments for region crossing of {0} from {1} to {2}.  Continuing.",
-                        agent.Name, agent.Scene.RegionInfo.RegionName, neighbourRegion.RegionName);
-
-                pos = pos + agent.Velocity;
-                Vector3 vel2 = new Vector3(agent.Velocity.X, agent.Velocity.Y, 0);
+            if (!CrossAgentIntoNewRegionMain(agent, pos, neighbourRegion, isFlying))
+                return agent;
 
-                agent.RemoveFromPhysicalScene();
+            CrossAgentToNewRegionPost(agent, pos, neighbourRegion, isFlying, version);
+            return agent;
+        }
 
+        public bool CrossAgentIntoNewRegionMain(ScenePresence agent, Vector3 pos, GridRegion neighbourRegion, bool isFlying)
+        {
+            try
+            {
                 AgentData cAgent = new AgentData(); 
                 agent.CopyTo(cAgent);
-                cAgent.Position = pos;
+                cAgent.Position = pos + agent.Velocity;
                 if (isFlying)
                     cAgent.ControlFlags |= (uint)AgentManager.ControlFlags.AGENT_CONTROL_FLY;
 
@@ -1084,7 +1091,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 // Beyond this point, extra cleanup is needed beyond removing transit state
                 m_entityTransferStateMachine.UpdateInTransit(agent.UUID, AgentTransferState.Transferring);
 
-                if (!m_scene.SimulationService.UpdateAgent(neighbourRegion, cAgent))
+                if (!agent.Scene.SimulationService.UpdateAgent(neighbourRegion, cAgent))
                 {
                     // region doesn't take it
                     m_entityTransferStateMachine.UpdateInTransit(agent.UUID, AgentTransferState.CleaningUp);
@@ -1093,93 +1100,108 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     agent.AddToPhysicalScene(isFlying);
                     m_entityTransferStateMachine.ResetFromTransit(agent.UUID);
 
-                    return agent;
+                    return false;
                 }
 
-                //AgentCircuitData circuitdata = m_controllingClient.RequestClientInfo();
-                agent.ControllingClient.RequestClientInfo();
+            }
+            catch (Exception e)
+            {
+                m_log.ErrorFormat(
+                    "[ENTITY TRANSFER MODULE]: Problem crossing user {0} to new region {1} from {2}.  Exception {3}{4}",
+                    agent.Name, neighbourRegion.RegionName, agent.Scene.RegionInfo.RegionName, e.Message, e.StackTrace);
+
+                // TODO: Might be worth attempting other restoration here such as reinstantiation of scripts, etc.
+                return false;
+            }
+
+            return true;
+        }
 
-                //m_log.Debug("BEFORE CROSS");
-                //Scene.DumpChildrenSeeds(UUID);
-                //DumpKnownRegions();
-                string agentcaps;
-                if (!agent.KnownRegions.TryGetValue(neighbourRegion.RegionHandle, out agentcaps))
-                {
-                    m_log.ErrorFormat("[ENTITY TRANSFER MODULE]: No ENTITY TRANSFER MODULE information for region handle {0}, exiting CrossToNewRegion.",
-                                     neighbourRegion.RegionHandle);
-                    return agent;
-                }
-                // No turning back
-                agent.IsChildAgent = true;
+        public void CrossAgentToNewRegionPost(ScenePresence agent, Vector3 pos, GridRegion neighbourRegion,
+            bool isFlying, string version)
+        {
+            agent.ControllingClient.RequestClientInfo();
 
-                string capsPath = neighbourRegion.ServerURI + CapsUtil.GetCapsSeedPath(agentcaps);
+            string agentcaps;
+            if (!agent.KnownRegions.TryGetValue(neighbourRegion.RegionHandle, out agentcaps))
+            {
+                m_log.ErrorFormat("[ENTITY TRANSFER MODULE]: No ENTITY TRANSFER MODULE information for region handle {0}, exiting CrossToNewRegion.",
+                                 neighbourRegion.RegionHandle);
+                return;
+            }
 
-                m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Sending new CAPS seed url {0} to client {1}", capsPath, agent.UUID);
+            // No turning back
+            agent.IsChildAgent = true;
 
-                if (m_eqModule != null)
-                {
-                    m_eqModule.CrossRegion(
-                        neighbourHandle, pos, vel2 /* agent.Velocity */, neighbourRegion.ExternalEndPoint,
-                        capsPath, agent.UUID, agent.ControllingClient.SessionId);
-                }
-                else
-                {
-                    agent.ControllingClient.CrossRegion(neighbourHandle, pos, agent.Velocity, neighbourRegion.ExternalEndPoint,
-                                                capsPath);
-                }
+            string capsPath = neighbourRegion.ServerURI + CapsUtil.GetCapsSeedPath(agentcaps);
 
-                // SUCCESS!
-                m_entityTransferStateMachine.UpdateInTransit(agent.UUID, AgentTransferState.ReceivedAtDestination);
+            m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Sending new CAPS seed url {0} to client {1}", capsPath, agent.UUID);
 
-                // Unlike a teleport, here we do not wait for the destination region to confirm the receipt.
-                m_entityTransferStateMachine.UpdateInTransit(agent.UUID, AgentTransferState.CleaningUp);
+            Vector3 vel2 = new Vector3(agent.Velocity.X, agent.Velocity.Y, 0);
 
-                agent.MakeChildAgent();
+            if (m_eqModule != null)
+            {
+                m_eqModule.CrossRegion(
+                    neighbourRegion.RegionHandle, pos + agent.Velocity, vel2 /* agent.Velocity */, neighbourRegion.ExternalEndPoint,
+                    capsPath, agent.UUID, agent.ControllingClient.SessionId);
+            }
+            else
+            {
+                agent.ControllingClient.CrossRegion(neighbourRegion.RegionHandle, pos + agent.Velocity, agent.Velocity, neighbourRegion.ExternalEndPoint,
+                                            capsPath);
+            }
 
-                // FIXME: Possibly this should occur lower down after other commands to close other agents,
-                // but not sure yet what the side effects would be.
-                m_entityTransferStateMachine.ResetFromTransit(agent.UUID);
+            // SUCCESS!
+            m_entityTransferStateMachine.UpdateInTransit(agent.UUID, AgentTransferState.ReceivedAtDestination);
 
-                // now we have a child agent in this region. Request all interesting data about other (root) agents
-                agent.SendOtherAgentsAvatarDataToMe();
-                agent.SendOtherAgentsAppearanceToMe();
+            // Unlike a teleport, here we do not wait for the destination region to confirm the receipt.
+            m_entityTransferStateMachine.UpdateInTransit(agent.UUID, AgentTransferState.CleaningUp);
 
-                // Backwards compatibility. Best effort
-                if (version == "Unknown" || version == string.Empty)
-                {
-                    m_log.DebugFormat("[ENTITY TRANSFER MODULE]: neighbor with old version, passing attachments one by one...");
-                    Thread.Sleep(3000); // wait a little now that we're not waiting for the callback
-                    CrossAttachmentsIntoNewRegion(neighbourRegion, agent, true);
-                }
+            agent.MakeChildAgent();
 
-                // Next, let's close the child agent connections that are too far away.
-                agent.CloseChildAgents(neighbourx, neighboury);
+            // FIXME: Possibly this should occur lower down after other commands to close other agents,
+            // but not sure yet what the side effects would be.
+            m_entityTransferStateMachine.ResetFromTransit(agent.UUID);
 
-                AgentHasMovedAway(agent, false);
+            // now we have a child agent in this region. Request all interesting data about other (root) agents
+            agent.SendOtherAgentsAvatarDataToMe();
+            agent.SendOtherAgentsAppearanceToMe();
 
-                // the user may change their profile information in other region,
-                // so the userinfo in UserProfileCache is not reliable any more, delete it
-                // REFACTORING PROBLEM. Well, not a problem, but this method is HORRIBLE!
-                if (agent.Scene.NeedSceneCacheClear(agent.UUID))
-                {
-                    m_log.DebugFormat(
-                        "[ENTITY TRANSFER MODULE]: User {0} is going to another region", agent.UUID);
-                }
-    
-                //m_log.Debug("AFTER CROSS");
-                //Scene.DumpChildrenSeeds(UUID);
-                //DumpKnownRegions();
-            }
-            catch (Exception e)
+            // Backwards compatibility. Best effort
+            if (version == "Unknown" || version == string.Empty)
             {
-                m_log.ErrorFormat(
-                    "[ENTITY TRANSFER MODULE]: Problem crossing user {0} to new region {1} from {2}.  Exception {3}{4}",
-                    agent.Name, neighbourRegion.RegionName, agent.Scene.RegionInfo.RegionName, e.Message, e.StackTrace);
+                m_log.DebugFormat("[ENTITY TRANSFER MODULE]: neighbor with old version, passing attachments one by one...");
+                Thread.Sleep(3000); // wait a little now that we're not waiting for the callback
+                CrossAttachmentsIntoNewRegion(neighbourRegion, agent, true);
+            }
 
-                // TODO: Might be worth attempting other restoration here such as reinstantiation of scripts, etc.
+            // Next, let's close the child agent connections that are too far away.
+            uint neighbourx;
+            uint neighboury;
+
+            Utils.LongToUInts(neighbourRegion.RegionHandle, out neighbourx, out neighboury);
+
+            neighbourx /= Constants.RegionSize;
+            neighboury /= Constants.RegionSize;
+
+            agent.CloseChildAgents(neighbourx, neighboury);
+
+            AgentHasMovedAway(agent, false);
+
+            // the user may change their profile information in other region,
+            // so the userinfo in UserProfileCache is not reliable any more, delete it
+            // REFACTORING PROBLEM. Well, not a problem, but this method is HORRIBLE!
+            if (agent.Scene.NeedSceneCacheClear(agent.UUID))
+            {
+                m_log.DebugFormat(
+                    "[ENTITY TRANSFER MODULE]: User {0} is going to another region", agent.UUID);
             }
 
-            return agent;
+            //m_log.Debug("AFTER CROSS");
+            //Scene.DumpChildrenSeeds(UUID);
+            //DumpKnownRegions();
+
+            return;
         }
          
         private void CrossAgentToNewRegionCompleted(IAsyncResult iar)
diff --git a/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs b/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs
index 32a4c88..99ffbe7 100644
--- a/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs
+++ b/OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs
@@ -189,9 +189,9 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                 args.Type = PollServiceEventArgs.EventType.LslHttp;
                 m_HttpServer.AddPollServiceHTTPHandler(uri, args);
 
-                m_log.DebugFormat(
-                    "[URL MODULE]: Set up incoming request url {0} for {1} in {2} {3}",
-                    uri, itemID, host.Name, host.LocalId);
+//                m_log.DebugFormat(
+//                    "[URL MODULE]: Set up incoming request url {0} for {1} in {2} {3}",
+//                    uri, itemID, host.Name, host.LocalId);
 
                 engine.PostScriptEvent(itemID, "http_request", new Object[] { urlcode.ToString(), "URL_REQUEST_GRANTED", url });
             }
@@ -235,9 +235,9 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
                 args.Type = PollServiceEventArgs.EventType.LslHttp;
                 m_HttpsServer.AddPollServiceHTTPHandler(uri, args);
 
-                m_log.DebugFormat(
-                    "[URL MODULE]: Set up incoming secure request url {0} for {1} in {2} {3}",
-                    uri, itemID, host.Name, host.LocalId);
+//                m_log.DebugFormat(
+//                    "[URL MODULE]: Set up incoming secure request url {0} for {1} in {2} {3}",
+//                    uri, itemID, host.Name, host.LocalId);
 
                 engine.PostScriptEvent(itemID, "http_request", new Object[] { urlcode.ToString(), "URL_REQUEST_GRANTED", url });
             }
diff --git a/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs b/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs
index 51dcb67..aae6603 100644
--- a/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs
+++ b/OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs
@@ -86,7 +86,10 @@ namespace OpenSim.Region.CoreModules.World.Land
         /// <value>
         /// Land objects keyed by local id
         /// </value>
-        private readonly Dictionary<int, ILandObject> m_landList = new Dictionary<int, ILandObject>();
+//        private readonly Dictionary<int, ILandObject> m_landList = new Dictionary<int, ILandObject>();
+
+        //ubit: removed the readonly so i can move it around
+        private Dictionary<int, ILandObject> m_landList = new Dictionary<int, ILandObject>();
 
         private int m_lastLandLocalID = LandChannel.START_LAND_LOCAL_ID - 1;
 
@@ -242,15 +245,19 @@ namespace OpenSim.Region.CoreModules.World.Land
         {
             LandData newData = data.Copy();
             newData.LocalID = local_id;
+            ILandObject landobj = null;        
 
             lock (m_landList)
             {
                 if (m_landList.ContainsKey(local_id))
                 {
                     m_landList[local_id].LandData = newData;
-                    m_scene.EventManager.TriggerLandObjectUpdated((uint)local_id, m_landList[local_id]);
+                    landobj = m_landList[local_id];
+//                    m_scene.EventManager.TriggerLandObjectUpdated((uint)local_id, m_landList[local_id]);
                 }
             }
+            if(landobj != null)
+                m_scene.EventManager.TriggerLandObjectUpdated((uint)local_id, landobj);
         }
 
         public bool AllowedForcefulBans
@@ -280,14 +287,14 @@ namespace OpenSim.Region.CoreModules.World.Land
         protected ILandObject CreateDefaultParcel()
         {
             m_log.DebugFormat(
-                "[LAND MANAGEMENT MODULE]: Creating default parcel for region {0}", m_scene.RegionInfo.RegionName);
-            
-            ILandObject fullSimParcel = new LandObject(UUID.Zero, false, m_scene);                                                
+                    "[LAND MANAGEMENT MODULE]: Creating default parcel for region {0}", m_scene.RegionInfo.RegionName);
+
+            ILandObject fullSimParcel = new LandObject(UUID.Zero, false, m_scene);
             fullSimParcel.SetLandBitmap(fullSimParcel.GetSquareLandBitmap(0, 0, (int)Constants.RegionSize, (int)Constants.RegionSize));
             fullSimParcel.LandData.OwnerID = m_scene.RegionInfo.EstateSettings.EstateOwner;
             fullSimParcel.LandData.ClaimDate = Util.UnixTimeSinceEpoch();
-            
-            return AddLandObject(fullSimParcel);            
+
+            return AddLandObject(fullSimParcel);
         }
 
         public List<ILandObject> AllParcels()
@@ -394,30 +401,51 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         public void SendLandUpdate(ScenePresence avatar, bool force)
         {
+
+            /* stop sendind same data twice
+                        ILandObject over = GetLandObject((int)Math.Min(((int)Constants.RegionSize - 1), Math.Max(0, Math.Round(avatar.AbsolutePosition.X))),
+                                                         (int)Math.Min(((int)Constants.RegionSize - 1), Math.Max(0, Math.Round(avatar.AbsolutePosition.Y))));
+
+                        if (over != null)
+                        {
+
+                            if (force)
+                            {
+                                if (!avatar.IsChildAgent)
+                                {
+                                    over.SendLandUpdateToClient(avatar.ControllingClient);
+                                    m_scene.EventManager.TriggerAvatarEnteringNewParcel(avatar, over.LandData.LocalID,
+                                                                                        m_scene.RegionInfo.RegionID);
+                                }
+                            }
+
+                            if (avatar.currentParcelUUID != over.LandData.GlobalID)
+                            {
+                                if (!avatar.IsChildAgent)
+                                {
+                                    over.SendLandUpdateToClient(avatar.ControllingClient);
+                                    avatar.currentParcelUUID = over.LandData.GlobalID;
+                                    m_scene.EventManager.TriggerAvatarEnteringNewParcel(avatar, over.LandData.LocalID,
+                                                                                        m_scene.RegionInfo.RegionID);
+                                }
+                            }
+             */
+            if (avatar.IsChildAgent)
+                return;
+
             ILandObject over = GetLandObject((int)Math.Min(((int)Constants.RegionSize - 1), Math.Max(0, Math.Round(avatar.AbsolutePosition.X))),
-                                             (int)Math.Min(((int)Constants.RegionSize - 1), Math.Max(0, Math.Round(avatar.AbsolutePosition.Y))));
+                                                         (int)Math.Min(((int)Constants.RegionSize - 1), Math.Max(0, Math.Round(avatar.AbsolutePosition.Y))));
 
             if (over != null)
             {
-                if (force)
-                {
-                    if (!avatar.IsChildAgent)
-                    {
-                        over.SendLandUpdateToClient(avatar.ControllingClient);
-                        m_scene.EventManager.TriggerAvatarEnteringNewParcel(avatar, over.LandData.LocalID,
-                                                                            m_scene.RegionInfo.RegionID);
-                    }
-                }
-
-                if (avatar.currentParcelUUID != over.LandData.GlobalID)
+                bool NotsameID = (avatar.currentParcelUUID != over.LandData.GlobalID);
+                if (force || NotsameID)
                 {
-                    if (!avatar.IsChildAgent)
-                    {
-                        over.SendLandUpdateToClient(avatar.ControllingClient);
+                    over.SendLandUpdateToClient(avatar.ControllingClient);
+                    if (NotsameID)
                         avatar.currentParcelUUID = over.LandData.GlobalID;
-                        m_scene.EventManager.TriggerAvatarEnteringNewParcel(avatar, over.LandData.LocalID,
-                                                                            m_scene.RegionInfo.RegionID);
-                    }
+                    m_scene.EventManager.TriggerAvatarEnteringNewParcel(avatar, over.LandData.LocalID,
+                                                                        m_scene.RegionInfo.RegionID);
                 }
             }
         }
@@ -617,21 +645,28 @@ namespace OpenSim.Region.CoreModules.World.Land
         /// </summary>        
         public void Clear(bool setupDefaultParcel)
         {
+            Dictionary<int, ILandObject> landworkList;
+            // move to work pointer since we are deleting it all
             lock (m_landList)
             {
-                foreach (ILandObject lo in m_landList.Values)
-                {
-                    //m_scene.SimulationDataService.RemoveLandObject(lo.LandData.GlobalID);
-                    m_scene.EventManager.TriggerLandObjectRemoved(lo.LandData.GlobalID);
-                }
+                landworkList = m_landList;
+                m_landList = new Dictionary<int, ILandObject>();
+            }
 
-                m_landList.Clear();
+            // this 2 methods have locks (now)
+            ResetSimLandObjects();
 
-                ResetSimLandObjects();
+            if (setupDefaultParcel)
+                CreateDefaultParcel();
 
-                if (setupDefaultParcel)
-                    CreateDefaultParcel();
+            // fire outside events unlocked
+            foreach (ILandObject lo in landworkList.Values)
+            {
+                //m_scene.SimulationDataService.RemoveLandObject(lo.LandData.GlobalID);
+                m_scene.EventManager.TriggerLandObjectRemoved(lo.LandData.GlobalID);
             }
+            landworkList.Clear();
+
         }
 
         private void performFinalLandJoin(ILandObject master, ILandObject slave)
@@ -1324,20 +1359,30 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         public void EventManagerOnIncomingLandDataFromStorage(List<LandData> data)
         {
+            Dictionary<int, ILandObject> landworkList;
+            // move to work pointer since we are deleting it all
+            lock (m_landList)
+            {
+                landworkList = m_landList;
+                m_landList = new Dictionary<int, ILandObject>();
+            }
+
+            //Remove all the land objects in the sim and then process our new data
+            foreach (int n in landworkList.Keys)
+            {
+                m_scene.EventManager.TriggerLandObjectRemoved(landworkList[n].LandData.GlobalID);
+            }
+            landworkList.Clear();
+
             lock (m_landList)
             {
-                //Remove all the land objects in the sim and then process our new data
-                foreach (int n in m_landList.Keys)
-                {
-                    m_scene.EventManager.TriggerLandObjectRemoved(m_landList[n].LandData.GlobalID);
-                }
                 m_landIDList.Initialize();
                 m_landList.Clear();
+            }
 
-                for (int i = 0; i < data.Count; i++)
-                {
-                    IncomingLandObjectFromStorage(data[i]);
-                }
+            for (int i = 0; i < data.Count; i++)
+            {
+                IncomingLandObjectFromStorage(data[i]);
             }
         }
 
@@ -1366,7 +1411,8 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         public void EventManagerOnNoLandDataFromStorage()
         {
-            lock (m_landList)
+            // called methods already have locks
+//            lock (m_landList)
             {
                 ResetSimLandObjects();
                 CreateDefaultParcel();