4 files changed, 66 insertions, 23 deletions

diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index dd01780..dd50073 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -581,6 +581,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         private void CloseCleanup(bool shutdownCircuit)
         {
+
+            
             m_scene.RemoveClient(AgentId);
 
             //m_log.InfoFormat("[CLIENTVIEW] Memory pre  GC {0}", System.GC.GetTotalMemory(false));
@@ -592,12 +594,22 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             Thread.Sleep(2000);
 
-            // Shut down timers
-            if (m_clientPingTimer.Enabled) m_clientPingTimer.Stop();
-            if (m_avatarTerseUpdateTimer.Enabled) m_avatarTerseUpdateTimer.Stop();
-            if (m_primTerseUpdateTimer.Enabled) m_primTerseUpdateTimer.Stop();
-            if (m_primFullUpdateTimer.Enabled) m_primFullUpdateTimer.Stop();
-            if (m_textureRequestTimer.Enabled) m_textureRequestTimer.Stop();
+            // Shut down timers. Thread Context of this method is murky.   Lock all timers
+            if (m_clientPingTimer.Enabled)
+                lock (m_clientPingTimer)
+                    m_clientPingTimer.Stop();
+            if (m_avatarTerseUpdateTimer.Enabled)
+                lock (m_avatarTerseUpdateTimer)
+                    m_avatarTerseUpdateTimer.Stop();
+            if (m_primTerseUpdateTimer.Enabled)
+                lock (m_primTerseUpdateTimer)
+                    m_primTerseUpdateTimer.Stop();
+            if (m_primFullUpdateTimer.Enabled)
+                lock (m_primFullUpdateTimer)
+                    m_primFullUpdateTimer.Stop();
+            if (m_textureRequestTimer.Enabled)
+                lock (m_textureRequestTimer)
+                    m_textureRequestTimer.Stop();
 
             // This is just to give the client a reasonable chance of
             // flushing out all it's packets.  There should probably
@@ -676,12 +688,26 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         public void Stop()
         {
-            // Shut down timers
-            if (m_clientPingTimer.Enabled) m_clientPingTimer.Stop();
-            if (m_avatarTerseUpdateTimer.Enabled) m_avatarTerseUpdateTimer.Stop();
-            if (m_primTerseUpdateTimer.Enabled) m_primTerseUpdateTimer.Stop();
-            if (m_primFullUpdateTimer.Enabled) m_primFullUpdateTimer.Stop();
-            if (m_textureRequestTimer.Enabled) m_textureRequestTimer.Stop();
+            // Shut down timers.  Thread Context is Murky, lock all timers!
+            if (m_clientPingTimer.Enabled)
+                lock (m_clientPingTimer)
+                    m_clientPingTimer.Stop();
+
+            if (m_avatarTerseUpdateTimer.Enabled)
+                lock (m_avatarTerseUpdateTimer)
+                    m_avatarTerseUpdateTimer.Stop();
+
+            if (m_primTerseUpdateTimer.Enabled)
+                lock (m_primTerseUpdateTimer)
+                    m_primTerseUpdateTimer.Stop();
+
+            if (m_primFullUpdateTimer.Enabled)
+                lock (m_primFullUpdateTimer)
+                    m_primFullUpdateTimer.Stop();
+
+            if (m_textureRequestTimer.Enabled)
+                lock (m_textureRequestTimer)
+                    m_textureRequestTimer.Stop();
         }
 
         public void Restart()
@@ -2907,7 +2933,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 }
                 else if (m_avatarTerseUpdates.Count == 1)
                 {
-                    m_avatarTerseUpdateTimer.Start();                
+                    lock (m_avatarTerseUpdateTimer)
+                        m_avatarTerseUpdateTimer.Start();                
                 }
             }
         }
@@ -2957,7 +2984,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 OutPacket(terse, ThrottleOutPacketType.Task);
 
                 if (m_avatarTerseUpdates.Count == 0)
-                    m_avatarTerseUpdateTimer.Stop();
+                {
+                    lock (m_avatarTerseUpdateTimer)
+                        m_avatarTerseUpdateTimer.Stop();
+                }
             }
         }
 
@@ -3138,7 +3168,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 if (m_imageManager.ProcessImageQueue(m_textureSendLimit, 
                                                      m_textureDataLimit))
                 {
-                    m_textureRequestTimer.Start();
+                    lock(m_textureRequestTimer)
+                        m_textureRequestTimer.Start();
                 }
             }
         }
@@ -3149,7 +3180,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 if (m_primFullUpdates.Count == 0 && m_primFullUpdateTimer.Enabled)
                 {
-                    m_primFullUpdateTimer.Stop();
+                    lock (m_primFullUpdateTimer)
+                        m_primFullUpdateTimer.Stop();
 
                     return;
                 }
@@ -3196,7 +3228,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 OutPacket(outPacket, ThrottleOutPacketType.Task | ThrottleOutPacketType.LowPriority);
 
                 if (m_primFullUpdates.Count == 0 && m_primFullUpdateTimer.Enabled)
-                    m_primFullUpdateTimer.Stop();
+                    lock (m_primFullUpdateTimer)
+                        m_primFullUpdateTimer.Stop();
             }
         }
 
@@ -3234,7 +3267,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 if (m_primTerseUpdates.Count == 0)
                 {
-                    m_primTerseUpdateTimer.Stop();
+                    lock (m_primTerseUpdateTimer)
+                        m_primTerseUpdateTimer.Stop();
 
                     return;
                 }
@@ -3284,7 +3318,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 OutPacket(outPacket, ThrottleOutPacketType.Task | ThrottleOutPacketType.LowPriority);
 
                 if (m_primTerseUpdates.Count == 0)
-                    m_primTerseUpdateTimer.Stop();
+                    lock (m_primTerseUpdateTimer)
+                        m_primTerseUpdateTimer.Stop();
             }
         }
 
@@ -6586,7 +6621,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                             if (m_imageManager != null)
                             {
                                 m_imageManager.EnqueueReq(args);
-                                m_textureRequestTimer.Start();
+                                lock (m_textureRequestTimer)
+                                    m_textureRequestTimer.Start();
                             }
                         }
                     }
diff --git a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
index c520356..6b0af6d 100644
--- a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
@@ -160,7 +160,10 @@ namespace Flotsam.RegionModules.AssetCache
                         m_CachCleanTimer.AutoReset = true;
                         m_CachCleanTimer.Elapsed += CleanupExpiredFiles;
                         m_CachCleanTimer.Enabled = true;
-                        m_CachCleanTimer.Start();
+                        lock (m_CachCleanTimer)
+                        {
+                            m_CachCleanTimer.Start();
+                        }
                     }
                     else
                     {
diff --git a/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs b/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs
index f8208ec..7ac1e7e 100644
--- a/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs
+++ b/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs
@@ -78,7 +78,8 @@ namespace OpenSim.Region.Framework.Scenes
                 bool permissionToDelete)
         {
             if (Enabled)
-                m_inventoryTicker.Stop();
+                lock (m_inventoryTicker)
+                    m_inventoryTicker.Stop();
 
             lock (m_inventoryDeletes)
             {
@@ -93,7 +94,8 @@ namespace OpenSim.Region.Framework.Scenes
             }
 
             if (Enabled)
-                m_inventoryTicker.Start();
+                lock (m_inventoryTicker)
+                    m_inventoryTicker.Start();
         
             // Visually remove it, even if it isnt really gone yet.  This means that if we crash before the object
             // has gone to inventory, it will reappear in the region again on restart instead of being lost.
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 40e7471..b0d279c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -3762,6 +3762,8 @@ if (m_shape != null) {
                     lPos = AbsolutePosition;
             }
 
+            // Causes this thread to dig into the Client Thread Data.
+            // Remember your locking here!
             remoteClient.SendPrimTerseUpdate(m_regionHandle,
                     (ushort)(m_parentGroup.GetTimeDilation() *
                     (float)ushort.MaxValue), LocalId, lPos,