Make SceneManager.OnRegionsReadyStatusChange event available.

This is fired when all regions are ready or when at least one region becomes not ready.
Recently added EventManager.OnRegionReady becomes OnRegionReadyStatusChange to match OnLoginsEnabledStatusChange

OpenSim/Framework/IScene.cs

@@ -71,6 +71,14 @@ namespace OpenSim.Framework
         /// </summary>
         bool LoginsEnabled { get; set; }
 
+        /// <summary>
+        /// Is this region ready for use?
+        /// </summary>
+        /// <remarks>
+        /// This does not mean that logins are enabled, merely that they can be.
+        /// </remarks>
+        bool Ready { get; set; }
+
         float TimeDilation { get; }
 
         bool AllowScriptCrossings { get; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs

@@ -128,11 +128,6 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
             m_enabled = true;
         }
 
-        ///<summary>
-        ///
-        ///</summary>
-
-
         ///<summary>
         ///
         ///</summary>
@@ -146,7 +141,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
             lock (m_scenes)
                 m_scenes[scene.RegionInfo.RegionID] = scene;
 
-            scene.EventManager.OnRegionReady += s => UploadMapTile(s);
+            scene.EventManager.OnRegionReadyStatusChange += s => { if (s.Ready) UploadMapTile(s); };
         }
 
         ///<summary>

OpenSim/Region/Framework/Scenes/EventManager.cs

@@ -513,8 +513,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// A region is considered ready when startup operations such as loading of scripts already on the region
         /// have been completed.
         /// </remarks>
-        public event RegionReady OnRegionReady;
+        public event Action<IScene> OnRegionReadyStatusChange;
-        public delegate void RegionReady(IScene scene);
 
         public delegate void PrimsLoaded(Scene s);
         public event PrimsLoaded OnPrimsLoaded;
@@ -2508,13 +2507,13 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        public void TriggerRegionReady(IScene scene)
+        public void TriggerRegionReadyStatusChange(IScene scene)
         {
-            RegionReady handler = OnRegionReady;
+            Action<IScene> handler = OnRegionReadyStatusChange;
 
             if (handler != null)
             {
-                foreach (RegionReady d in handler.GetInvocationList())
+                foreach (Action<IScene> d in handler.GetInvocationList())
                 {
                     try
                     {
@@ -2522,7 +2521,7 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                     catch (Exception e)
                     {
-                        m_log.ErrorFormat("[EVENT MANAGER]: Delegate for OnRegionReady failed - continuing {0} - {1}",
+                        m_log.ErrorFormat("[EVENT MANAGER]: Delegate for OnRegionReadyStatusChange failed - continuing {0} - {1}",
                             e.Message, e.StackTrace);
                     }
                 }

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -1499,8 +1499,8 @@ namespace OpenSim.Region.Framework.Scenes
                             m_sceneGridService.InformNeighborsThatRegionisUp(
                                 RequestModuleInterface<INeighbourService>(), RegionInfo);
 
-                            // Region ready should always be triggered whether logins are immediately enabled or not.
+                            // Region ready should always be set
-                            EventManager.TriggerRegionReady(this);
+                            Ready = true;
                         }
                         else
                         {

OpenSim/Region/Framework/Scenes/SceneBase.cs

@@ -124,6 +124,24 @@ namespace OpenSim.Region.Framework.Scenes
         }
         private bool m_loginsEnabled;
 
+        public bool Ready
+        {
+            get
+            {
+                return m_ready;
+            }
+
+            set
+            {
+                if (m_ready != value)
+                {
+                    m_ready = value;
+                    EventManager.TriggerRegionReadyStatusChange(this);
+                }
+            }
+        }
+        private bool m_ready;
+
         public float TimeDilation
         {
             get { return 1.0f; }

OpenSim/Region/Framework/Scenes/SceneManager.cs

@@ -47,6 +47,48 @@ namespace OpenSim.Region.Framework.Scenes
 
         public event RestartSim OnRestartSim;
 
+        /// <summary>
+        /// Fired when either all regions are ready for use or at least one region has become unready for use where
+        /// previously all regions were ready.
+        /// </summary>
+        public event Action<SceneManager> OnRegionsReadyStatusChange;
+
+        /// <summary>
+        /// Are all regions ready for use?
+        /// </summary>
+        public bool AllRegionsReady
+        {
+            get
+            {
+                return m_allRegionsReady;
+            }
+
+            private set
+            {
+                if (m_allRegionsReady != value)
+                {
+                    m_allRegionsReady = value;
+                    Action<SceneManager> handler = OnRegionsReadyStatusChange;
+                    if (handler != null)
+                    {
+                        foreach (Action<SceneManager> d in handler.GetInvocationList())
+                        {
+                            try
+                            {
+                                d(this);
+                            }
+                            catch (Exception e)
+                            {
+                                m_log.ErrorFormat("[SCENE MANAGER]: Delegate for OnRegionsReadyStatusChange failed - continuing {0} - {1}",
+                                    e.Message, e.StackTrace);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        private bool m_allRegionsReady;
+
         private static SceneManager m_instance = null;
         public static SceneManager Instance
         { 
@@ -141,10 +183,11 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void Add(Scene scene)
         {
-            scene.OnRestart += HandleRestart;
-
             lock (m_localScenes)
                 m_localScenes.Add(scene);
+
+            scene.OnRestart += HandleRestart;
+            scene.EventManager.OnRegionReadyStatusChange += HandleRegionReadyStatusChange;
         }
 
         public void HandleRestart(RegionInfo rdata)
@@ -175,6 +218,12 @@ namespace OpenSim.Region.Framework.Scenes
             OnRestartSim(rdata);
         }
 
+        private void HandleRegionReadyStatusChange(IScene scene)
+        {
+            lock (m_localScenes)
+                AllRegionsReady = m_localScenes.TrueForAll(s => s.Ready);
+        }
+
         public void SendSimOnlineNotification(ulong regionHandle)
         {
             RegionInfo Result = null;

OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs

@@ -225,7 +225,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
                 RRAlert("enabled");
             }
 
-            m_scene.EventManager.TriggerRegionReady(m_scene);
+            m_scene.Ready = true;
         }
 
         public void OarLoadingAlert(string msg)

OpenSim/Region/ScriptEngine/XEngine/XEngine.cs

@@ -646,7 +646,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
 
             // If region ready has been triggered, then the region had no scripts to compile and completed its other
             // work.
-            m_Scene.EventManager.OnRegionReady += s => m_InitialStartup = false;
+            m_Scene.EventManager.OnRegionReadyStatusChange += s => { if (s.Ready) m_InitialStartup = false; };
 
             if (m_SleepTime > 0)
             {