Add number of milliseconds since last update to "show threads"

OpenSim/Framework/Servers/BaseOpenSimServer.cs

@@ -247,13 +247,17 @@ namespace OpenSim.Framework.Servers
             Watchdog.ThreadWatchdogInfo[] threads = Watchdog.GetThreads();
 
             sb.Append(threads.Length + " threads are being tracked:" + Environment.NewLine);
+
+            int timeNow = Util.EnvironmentTickCount();
+
             foreach (Watchdog.ThreadWatchdogInfo twi in threads)
             {
                 Thread t = twi.Thread;
                 
-                sb.Append(
+                sb.AppendFormat(
-                    "ID: " + t.ManagedThreadId + ", Name: " + t.Name + ", TimeRunning: " 
+                    "ID: {0}, Name: {1}, Last Update: {2} ms ago, Pri: {3}, State: {4}",
-                    + "Pri: " + t.Priority + ", State: " + t.ThreadState);
+                    t.ManagedThreadId, t.Name, timeNow - twi.LastTick, t.Priority, t.ThreadState);
+
                 sb.Append(Environment.NewLine);
             }
 

OpenSim/Framework/Watchdog.cs

@@ -48,6 +48,15 @@ namespace OpenSim.Framework
         public class ThreadWatchdogInfo
         {
             public Thread Thread { get; private set; }
+
+            /// <summary>
+            /// Approximate tick when this thread was started.
+            /// </summary>
+            public int StartTick { get; private set; }
+
+            /// <summary>
+            /// Last time this heartbeat update was invoked
+            /// </summary>
             public int LastTick { get; set; }
 
             /// <summary>
@@ -64,7 +73,8 @@ namespace OpenSim.Framework
             {
                 Thread = thread;
                 Timeout = timeout;
-                LastTick = Environment.TickCount & Int32.MaxValue;
+                StartTick = Environment.TickCount & Int32.MaxValue;
+                LastTick = StartTick;
             }
         }