* added two new commands (for debug/disaster recovery)

'show assets' shows the current state of the asset cache (number of cached assets, requests, et c)
  'clear-assets' forcibly re-initializes the asset cache thereby freeing all cached items.

'clear-assets' is not to be used lightly, as it probably introduces mem inconsistencies and doubling up of textures.

OpenSim/Framework/Communications/Cache/AssetCache.cs

@@ -49,31 +49,61 @@ namespace OpenSim.Framework.Communications.Cache
         public Dictionary<LLUUID, AssetInfo> Assets;
         public Dictionary<LLUUID, TextureImage> Textures;
 
-        public List<AssetRequest> AssetRequests = new List<AssetRequest>(); //assets ready to be sent to viewers
+        public List<AssetRequest> AssetRequests; //assets ready to be sent to viewers
-        public List<AssetRequest> TextureRequests = new List<AssetRequest>(); //textures ready to be sent
+        public List<AssetRequest> TextureRequests; //textures ready to be sent
 
-        public Dictionary<LLUUID, AssetRequest> RequestedAssets = new Dictionary<LLUUID, AssetRequest>();
+        public Dictionary<LLUUID, AssetRequest> RequestedAssets;
         //Assets requested from the asset server
 
-        public Dictionary<LLUUID, AssetRequest> RequestedTextures = new Dictionary<LLUUID, AssetRequest>();
+        public Dictionary<LLUUID, AssetRequest> RequestedTextures;
         //Textures requested from the asset server
 
-        public Dictionary<LLUUID, AssetRequestsList> RequestLists = new Dictionary<LLUUID, AssetRequestsList>();
+        public Dictionary<LLUUID, AssetRequestsList> RequestLists;
 
         private readonly IAssetServer m_assetServer;
 
         private readonly Thread m_assetCacheThread;
 
-        /// <summary>
+        public void ShowState()
-        /// 
+        {
-        /// </summary>
+            m_log.InfoFormat("Assets:{0}  Testures:{1}  AssetRequests:{2}  TextureRequests:{3}  RequestedAssets:{4}  RequestedTextures:{5}  RequestLists:{6}",
+                Assets.Count,
+                Textures.Count,
+                AssetRequests.Count,
+                TextureRequests.Count,
+                RequestedAssets.Count,
+                RequestedTextures.Count,
+                RequestLists.Count );
+        }
+
+        public void Clear()
+        {
+            m_log.Info("[ASSETSTORAGE]: Clearing Asset cache");
+            Initialize();
+        }
+
+        private void Initialize()
+        {
+            Assets = new Dictionary<LLUUID, AssetInfo>();
+            Textures = new Dictionary<LLUUID, TextureImage>();
+            AssetRequests = new List<AssetRequest>(); //assets ready to be sent to viewers
+            TextureRequests = new List<AssetRequest>(); //textures ready to be sent
+
+            RequestedAssets = new Dictionary<LLUUID, AssetRequest>();
+            RequestedTextures = new Dictionary<LLUUID, AssetRequest>();
+            RequestLists = new Dictionary<LLUUID, AssetRequestsList>();
+        }
+
+
         public AssetCache(IAssetServer assetServer)
         {
             m_log.Info("[ASSETSTORAGE]: Creating Asset cache");
+            Initialize();
+
             m_assetServer = assetServer;
             m_assetServer.SetReceiver(this);
-            Assets = new Dictionary<LLUUID, AssetInfo>();
+
-            Textures = new Dictionary<LLUUID, TextureImage>();
+            
             m_assetCacheThread = new Thread(new ThreadStart(RunAssetManager));
             m_assetCacheThread.IsBackground = true;
             m_assetCacheThread.Start();
@@ -384,7 +414,7 @@ namespace OpenSim.Framework.Communications.Cache
             {
                 // over max number of bytes so split up file
                 long restData = data.LongLength - m_maxPacketSize;
-                int restPackets = (int) ((restData + m_maxPacketSize - 1)/m_maxPacketSize);
+                int restPackets = (int)((restData + m_maxPacketSize - 1) / m_maxPacketSize);
                 numPackets += restPackets;
             }
 
@@ -465,7 +495,7 @@ namespace OpenSim.Framework.Communications.Cache
             AssetRequest req;
             for (int i = 0; i < num; i++)
             {
-                req = (AssetRequest) AssetRequests[i];
+                req = (AssetRequest)AssetRequests[i];
                 //Console.WriteLine("sending asset " + req.RequestAssetID);
                 TransferInfoPacket Transfer = new TransferInfoPacket();
                 Transfer.TransferInfo.ChannelType = 2;
@@ -475,7 +505,7 @@ namespace OpenSim.Framework.Communications.Cache
                 {
                     Transfer.TransferInfo.Params = new byte[20];
                     Array.Copy(req.RequestAssetID.GetBytes(), 0, Transfer.TransferInfo.Params, 0, 16);
-                    int assType = (int) req.AssetInf.Type;
+                    int assType = (int)req.AssetInf.Type;
                     Array.Copy(Helpers.IntToBytes(assType), 0, Transfer.TransferInfo.Params, 16, 4);
                 }
                 else if (req.AssetRequestSource == 3)
@@ -485,7 +515,7 @@ namespace OpenSim.Framework.Communications.Cache
                     //Array.Copy(req.RequestUser.AgentId.GetBytes(), 0, Transfer.TransferInfo.Params, 0, 16);
                     //Array.Copy(req.RequestUser.SessionId.GetBytes(), 0, Transfer.TransferInfo.Params, 16, 16);
                 }
-                Transfer.TransferInfo.Size = (int) req.AssetInf.Data.Length;
+                Transfer.TransferInfo.Size = (int)req.AssetInf.Data.Length;
                 Transfer.TransferInfo.TransferID = req.TransferRequestID;
                 req.RequestUser.OutPacket(Transfer, ThrottleOutPacketType.Asset);
 

OpenSim/Region/Application/OpenSimMain.cs

@@ -651,6 +651,10 @@ namespace OpenSim
             
             switch (command)
             {
+                case "clear-assets":
+                    m_assetCache.Clear();
+                    break;
+
                 case "set-time":
                     m_sceneManager.SetCurrentSceneTimePhase(Convert.ToInt32(cmdparams[0]));
                     break;
@@ -679,6 +683,7 @@ namespace OpenSim
                     m_console.Notice("  alert [First] [Last] [Message] - send an alert to a user. Case sensitive.");
                     m_console.Notice("  alert general [Message] - send an alert to all users.");
                     m_console.Notice("backup - trigger a simulator backup");
+                    m_console.Notice("clear-assets - clear asset cache");
                     m_console.Notice("create user - adds a new user");
                     m_console.Notice("change-region [name] - sets the region that many of these commands affect.");
                     m_console.Notice("command-script [filename] - Execute command in a file.");
@@ -697,6 +702,7 @@ namespace OpenSim
                     m_console.Notice("save-xml2 [filename] - save prims to XML using version 2 format");
                     m_console.Notice("script - manually trigger scripts? or script commands?");
                     m_console.Notice("set-time [x] - set the current scene time phase");
+                    m_console.Notice("show assets - show state of asset cache.");
                     m_console.Notice("show users - show info about connected users.");
                     m_console.Notice("show modules - shows info aboutloaded modules.");
                     m_console.Notice("show stats - statistical information for this server not displayed in the client");
@@ -989,6 +995,10 @@ namespace OpenSim
             
             switch (ShowWhat)
             {
+                case "assets":
+                    m_assetCache.ShowState();
+                    break;
+
                 case "users":
                     m_console.Notice(
                         String.Format("{0,-16}{1,-16}{2,-37}{3,-16}{4,-22}{5,-16}", "Firstname", "Lastname",