From 7102ac77698f4bfd7406d6e8871db7b006c2cae2 Mon Sep 17 00:00:00 2001
From: Tedd Hansen
Date: Thu, 21 Feb 2008 10:43:24 +0000
Subject: "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.

---
 .../Framework/Communications/Cache/AssetCache.cs   |   1 +
 .../Communications/Cache/AssetServerBase.cs        |   1 +
 OpenSim/Framework/Servers/BaseHttpServer.cs        |   1 +
 OpenSim/Framework/ThreadTracker.cs                 | 106 +++++++++++++++++++++
 4 files changed, 109 insertions(+)
 create mode 100644 OpenSim/Framework/ThreadTracker.cs

(limited to 'OpenSim/Framework')

diff --git a/OpenSim/Framework/Communications/Cache/AssetCache.cs b/OpenSim/Framework/Communications/Cache/AssetCache.cs
index 8f8e362..15b52b0 100644
--- a/OpenSim/Framework/Communications/Cache/AssetCache.cs
+++ b/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>
diff --git a/OpenSim/Framework/Communications/Cache/AssetServerBase.cs b/OpenSim/Framework/Communications/Cache/AssetServerBase.cs
index a3530bd..cae4231 100644
--- a/OpenSim/Framework/Communications/Cache/AssetServerBase.cs
+++ b/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()
diff --git a/OpenSim/Framework/Servers/BaseHttpServer.cs b/OpenSim/Framework/Servers/BaseHttpServer.cs
index 662eefd..dc540f9 100644
--- a/OpenSim/Framework/Servers/BaseHttpServer.cs
+++ b/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()
diff --git a/OpenSim/Framework/ThreadTracker.cs b/OpenSim/Framework/ThreadTracker.cs
new file mode 100644
index 0000000..42e3879
--- /dev/null
+++ b/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;
+        }
+    }
+}
-- 
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