From 5c012cac54f92f2881005a50fd3eb103f0f2ea07 Mon Sep 17 00:00:00 2001
From: Melanie <melanie@t-data.com>
Date: Mon, 25 Jul 2011 04:16:53 +0200
Subject: [PATCH] Add a timer to monitor the heartbeat. Restart it if it's been
 dead for 5 seconds.

---
 OpenSim/Region/Application/OpenSimBase.cs |  1 +
 OpenSim/Region/Framework/Scenes/Scene.cs  | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index 04a68ae4a9..dbfd0f2290 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -487,6 +487,7 @@ namespace OpenSim
             }
 
             scene.StartTimer();
+            scene.StartTimerWatchdog();
 
             return clientServer;
         }
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index e02a866c4a..ec82cc3553 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -109,6 +109,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         protected int m_splitRegionID;
         protected Timer m_restartWaitTimer = new Timer();
+        protected Timer m_timerWatchdog = new Timer();
         protected List<RegionInfo> m_regionRestartNotifyList = new List<RegionInfo>();
         protected List<RegionInfo> m_neighbours = new List<RegionInfo>();
         protected string m_simulatorVersion = "OpenSimulator Server";
@@ -191,7 +192,7 @@ namespace OpenSim.Region.Framework.Scenes
         private bool m_scripts_enabled = true;
         private string m_defaultScriptEngine;
         private int m_LastLogin;
-        private Thread HeartbeatThread;
+        private Thread HeartbeatThread = null;
         private volatile bool shuttingdown;
 
         private int m_lastUpdate;
@@ -4886,7 +4887,7 @@ namespace OpenSim.Region.Framework.Scenes
             if (m_firstHeartbeat)
                 return;
 
-            if (Util.EnvironmentTickCountSubtract(m_lastUpdate) > 10000)
+            if (Util.EnvironmentTickCountSubtract(m_lastUpdate) > 5000)
                 StartTimer();
         }
 
@@ -5380,5 +5381,18 @@ namespace OpenSim.Region.Framework.Scenes
             reason = String.Empty;
             return true;
         }
+
+        public void StartTimerWatchdog()
+        {
+            m_timerWatchdog.Interval = 1000;
+            m_timerWatchdog.Elapsed += TimerWatchdog;
+            m_timerWatchdog.AutoReset = true;
+            m_timerWatchdog.Start();
+        }
+
+        public void TimerWatchdog(object sender, ElapsedEventArgs e)
+        {
+            CheckHeartbeat();
+        }
     }
 }