"threads" command now works. I've added manual tracking of threads (only if compiled in DEBUG mode)... Its ugly and even requires a separate thread to track the treads, but it will be very valuable in debugging.

OpenSim/Framework/Communications/Cache/AssetCache.cs

@@ -171,6 +171,7 @@ namespace OpenSim.Framework.Communications.Cache
             m_assetCacheThread.Name = "AssetCacheThread";
             m_assetCacheThread.IsBackground = true;
             m_assetCacheThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(m_assetCacheThread);
         }
 
         /// <summary>

OpenSim/Framework/Communications/Cache/AssetServerBase.cs

@@ -101,6 +101,7 @@ namespace OpenSim.Framework.Communications.Cache
             m_localAssetServerThread.Name = "LocalAssetServerThread";
             m_localAssetServerThread.IsBackground = true;
             m_localAssetServerThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(m_localAssetServerThread);
         }
 
         private void RunRequests()

OpenSim/Framework/Servers/BaseHttpServer.cs

@@ -550,6 +550,7 @@ namespace OpenSim.Framework.Servers
             m_workerThread.Name = "HttpThread";
             m_workerThread.IsBackground = true;
             m_workerThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(m_workerThread);
         }
 
         private void StartHTTP()

OpenSim/Framework/ThreadTracker.cs

@@ -0,0 +1,106 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+
+namespace OpenSim.Framework
+{
+    public static class ThreadTracker
+    {
+        public static List<ThreadTrackerItem> m_Threads;
+        public static System.Threading.Thread ThreadTrackerThread;
+        private static readonly long ThreadTimeout = 30 * 10000000;
+
+        static ThreadTracker()
+        {
+#if DEBUG
+            m_Threads = new List<ThreadTrackerItem>();
+            ThreadTrackerThread = new Thread(ThreadTrackerThreadLoop);
+            ThreadTrackerThread.Name = "ThreadTrackerThread";
+            ThreadTrackerThread.IsBackground = true;
+            ThreadTrackerThread.Priority = System.Threading.ThreadPriority.BelowNormal;
+            ThreadTrackerThread.Start();
+#endif
+        }
+
+        private static void ThreadTrackerThreadLoop()
+        {
+            while (true)
+            {
+                Thread.Sleep(5000);
+                CleanUp();
+            }
+        }
+
+        public static void Add(System.Threading.Thread thread)
+        {
+#if DEBUG
+            lock (m_Threads)
+            {
+                ThreadTrackerItem tti = new ThreadTrackerItem();
+                tti.Thread = thread;
+                tti.LastSeenActive = DateTime.Now.Ticks;
+                m_Threads.Add(tti);
+            }
+#endif
+        }
+
+        public static void Remove(System.Threading.Thread thread)
+        {
+#if DEBUG
+            lock (m_Threads)
+            {
+                foreach (ThreadTrackerItem tti in new ArrayList(m_Threads))
+                {
+                    if (tti.Thread == thread)
+                        m_Threads.Remove(tti);
+                }
+            }
+#endif
+        }
+
+        public static void CleanUp()
+        {
+            lock (m_Threads)
+            {
+                foreach (ThreadTrackerItem tti in new ArrayList(m_Threads))
+                {
+                    if (tti.Thread.IsAlive)
+                    {
+                        // Its active
+                        tti.LastSeenActive = DateTime.Now.Ticks;
+                    }
+                    else
+                    {
+                        // Its not active -- if its expired then remove it
+                        if (tti.LastSeenActive + ThreadTimeout < DateTime.Now.Ticks)
+                            m_Threads.Remove(tti);
+                    }
+                }
+            }
+        }
+
+        public static List<Thread> GetThreads()
+        {
+            if (m_Threads == null)
+                return null;
+
+            List<Thread> threads = new List<Thread>();
+            lock (m_Threads)
+            {
+                foreach (ThreadTrackerItem tti in new ArrayList(m_Threads))
+                {
+                    threads.Add(tti.Thread);
+                }
+            }
+            return threads;
+        }
+
+        public class ThreadTrackerItem
+        {
+            public System.Threading.Thread Thread;
+            public long LastSeenActive;
+        }
+    }
+}

OpenSim/Grid/ScriptServer/ScriptServer/RegionCommManager.cs

@@ -61,6 +61,7 @@ namespace OpenSim.Grid.ScriptServer
             listenThread.Name = "ListenThread";
             listenThread.IsBackground = true;
             listenThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(listenThread);
         }
 
         /// <summary>

OpenSim/Region/Application/OpenSimMain.cs

@@ -754,15 +754,30 @@ namespace OpenSim
                     break;
 
                 case "threads":
-                        m_console.Notice("THREAD", Process.GetCurrentProcess().Threads.Count + " threads running:");
+                        //m_console.Notice("THREAD", Process.GetCurrentProcess().Threads.Count + " threads running:");
-                        int _tc = 0;
+                        //int _tc = 0;
                     
-                        foreach (ProcessThread pt in Process.GetCurrentProcess().Threads)
+                        //foreach (ProcessThread pt in Process.GetCurrentProcess().Threads)
+                        //{
+                        //    _tc++;
+                        //    m_console.Notice("THREAD", _tc + ": ID: " + pt.Id + ", Started: " + pt.StartTime.ToString() + ", CPU time: " + pt.TotalProcessorTime + ", Pri: " + pt.BasePriority.ToString() + ", State: " + pt.ThreadState.ToString());
+                            
+                        //}
+                    List<Thread> threads = OpenSim.Framework.ThreadTracker.GetThreads();
+                    if (threads == null)
+                    {
+                        m_console.Notice("THREAD", "Thread tracking is only enabled in DEBUG mode.");
+                    }
+                    else
+                    {
+                        int _tc = 0;
+                        m_console.Notice("THREAD", threads.Count + " threads are being tracked:");
+                        foreach (Thread t in threads)
                         {
                             _tc++;
-                            m_console.Notice("THREAD", _tc + ": ID: " + pt.Id + ", Started: " + pt.StartTime.ToString() + ", CPU time: " + pt.TotalProcessorTime + ", Pri: " + pt.BasePriority.ToString() + ", State: " + pt.ThreadState.ToString());
+                            m_console.Notice("THREAD", _tc + ": ID: " + t.ManagedThreadId.ToString() + ", Name: " + t.Name + ", Alive: " + t.IsAlive.ToString() + ", Pri: " + t.Priority.ToString() + ", State: " + t.ThreadState.ToString());
-                            
                         }
+                    }
 
 
                     break;

OpenSim/Region/ClientStack/ClientView.cs

@@ -228,6 +228,7 @@ namespace OpenSim.Region.ClientStack
             m_clientThread.Name = "ClientThread";
             m_clientThread.IsBackground = true;
             m_clientThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(m_clientThread);
         }
 
         public void SetDebug(int newDebug)

OpenSim/Region/Environment/Modules/ChatModule.cs

@@ -113,7 +113,10 @@ namespace OpenSim.Region.Environment.Modules
                         m_irc_connector.Name = "IRCConnectorThread";
                         m_irc_connector.IsBackground = true;
                     }
-                    if (!m_irc_connector.IsAlive) { m_irc_connector.Start(); }
+                    if (!m_irc_connector.IsAlive) { 
+                        m_irc_connector.Start();
+                        OpenSim.Framework.ThreadTracker.Add(m_irc_connector);
+                    }
                 }
                 catch (Exception ex)
                 {
@@ -260,7 +263,10 @@ namespace OpenSim.Region.Environment.Modules
                     m_irc_connector.Name = "IRCConnectorThread";
                     m_irc_connector.IsBackground = true;
                     }
-                    if (!m_irc_connector.IsAlive) { m_irc_connector.Start(); }
+                    if (!m_irc_connector.IsAlive) { 
+                        m_irc_connector.Start();
+                        OpenSim.Framework.ThreadTracker.Add(m_irc_connector);
+                    }
                 }
                 catch (Exception ex)
                 {
@@ -421,11 +427,13 @@ namespace OpenSim.Region.Environment.Modules
                     pingSender.Name = "PingSenderThread";
                     pingSender.IsBackground = true;
                     pingSender.Start();
+                    OpenSim.Framework.ThreadTracker.Add(pingSender);
 
                     listener = new Thread(new ThreadStart(ListenerRun));
                     listener.Name = "IRCChatModuleListenerThread";
                     listener.IsBackground = true;
                     listener.Start();
+                    OpenSim.Framework.ThreadTracker.Add(listener);
 
                     m_writer.WriteLine(m_user);
                     m_writer.Flush();

OpenSim/Region/Environment/Modules/ScriptsHttpRequests.cs

@@ -287,6 +287,7 @@ namespace OpenSim.Region.Environment.Modules
             httpThread.IsBackground = true;
             finished = false;
             httpThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(httpThread);
         }
 
         /*

OpenSim/Region/Environment/Modules/TextureDownloadModule.cs

@@ -75,6 +75,7 @@ namespace OpenSim.Region.Environment.Modules
                 m_thread.Name = "ProcessTextureSenderThread";
                 m_thread.IsBackground = true;
                 m_thread.Start();
+                OpenSim.Framework.ThreadTracker.Add(m_thread);
             }
 
             if (!m_scenes.Contains(scene))

OpenSim/Region/Environment/Modules/XMLRPCModule.cs

@@ -584,6 +584,7 @@ namespace OpenSim.Region.Environment.Modules
                 httpThread.IsBackground = true;
                 finished = false;
                 httpThread.Start();
+                OpenSim.Framework.ThreadTracker.Add(httpThread);
 
                 return reqID;
 

OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/AsyncLSLCommandManager.cs

@@ -57,6 +57,7 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
             cmdHandlerThread.Priority = ThreadPriority.BelowNormal;
             cmdHandlerThread.IsBackground = true;
             cmdHandlerThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(cmdHandlerThread);
         }
 
         public void ReadConfig()

OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueThreadClass.cs

@@ -117,6 +117,7 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
             EventQueueThread.Priority = MyThreadPriority;
             EventQueueThread.Name = "EventQueueManagerThread_" + ThreadCount;
             EventQueueThread.Start();
+            OpenSim.Framework.ThreadTracker.Add(EventQueueThread);
 
             // Look at this... Don't you wish everyone did that solid coding everywhere? :P
             if (ThreadCount == int.MaxValue)

OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/MaintenanceThread.cs

@@ -78,6 +78,7 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
                 MaintenanceThreadThread.Name = "ScriptMaintenanceThread";
                 MaintenanceThreadThread.IsBackground = true;
                 MaintenanceThreadThread.Start();
+                OpenSim.Framework.ThreadTracker.Add(MaintenanceThreadThread);
             }
         }
 

OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/ScriptManager.cs

@@ -160,6 +160,7 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
             t.IsBackground = true;
             t.Priority = ThreadPriority.Normal;
             t.Start();
+            OpenSim.Framework.ThreadTracker.Add(t);
             return t;
         }
 

OpenSim/Tools/pCampBot/BotManager.cs

@@ -118,6 +118,7 @@ namespace pCampBot
             m_td[pos].IsBackground = true;
             m_td[pos].Start();
             m_lBot.Add(pb);
+            OpenSim.Framework.ThreadTracker.Add(m_td[pos]);
         }
 
         /// <summary>