* Establish OnOarFileSaved EventManager event and subscribe to that instead of passing in a waithandle to the archiver

* This matches the existing OnOarFileLoaded event
* This brings up the question of how these things can be made generic so that they don't have to be tied into EventManager, but that's a topic for another day

OpenSim/Region/Environment/Interfaces/IRegionArchiverModule.cs

@@ -26,7 +26,6 @@
  */
 
 using System.IO;
-using System.Threading;
 
 namespace OpenSim.Region.Environment.Interfaces
 {
@@ -38,6 +37,10 @@ namespace OpenSim.Region.Environment.Interfaces
         /// <summary>
         /// Archive the region to the given path
         /// </summary>
+        /// 
+        /// This method occurs asynchronously.  If you want notification of when it has completed then subscribe to
+        /// the EventManager.OnOarFileSaved event.
+        /// 
         /// <param name="savePath"></param>
         void ArchiveRegion(string savePath);
 
@@ -45,21 +48,27 @@ namespace OpenSim.Region.Environment.Interfaces
         /// Archive the region to a stream.
         /// </summary>
         /// 
+        /// This method occurs asynchronously.  If you want notification of when it has completed then subscribe to
+        /// the EventManager.OnOarFileSaved event.
+        /// 
         /// <param name="saveStream"></param>
-        /// <param name="waitHandle">
+        void ArchiveRegion(Stream saveStream);
-        /// Pass in a wait handle if you want to be signalled when the operation completes.
-        /// </param>
-        void ArchiveRegion(Stream saveStream, EventWaitHandle waitHandle);
 
         /// <summary>
         /// Dearchive the given region archive into the scene
         /// </summary>
+        /// 
+        /// If you want notification of when it has completed then subscribe to the EventManager.OnOarFileLoaded event.
+        /// 
         /// <param name="loadPath"></param>
         void DearchiveRegion(string loadPath);
         
         /// <summary>
-        /// Dearchive a region from a stream
+        /// Dearchive a region from a stream.  
         /// </summary>
+        /// 
+        /// If you want notification of when it has completed then subscribe to the EventManager.OnOarFileLoaded event.
+        /// 
         /// <param name="loadStream"></param>
         void DearchiveRegion(Stream loadStream);
     }

OpenSim/Region/Environment/Modules/World/Archiver/ArchiveReadRequest.cs

@@ -233,8 +233,8 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
             {
                 sceneObject.CreateScriptInstances(0, true, m_scene.DefaultScriptEngine, 0);
             }
+            
             m_scene.EventManager.TriggerOarFileLoaded(m_errorMessage);
-
         }
 
         /// <summary>

OpenSim/Region/Environment/Modules/World/Archiver/ArchiveWriteRequestExecution.cs

@@ -29,7 +29,6 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Reflection;
-using System.Threading;
 using System.Xml;
 using OpenMetaverse;
 using log4net;
@@ -45,7 +44,7 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
     /// Method called when all the necessary assets for an archive request have been received.
     /// </summary>
     public delegate void AssetsRequestCallback(IDictionary<UUID, AssetBase> assetsFound, ICollection<UUID> assetsNotFoundUuids);
-
+    
     /// <summary>
     /// Execute the write of an archive once we have received all the necessary data
     /// </summary>
@@ -56,27 +55,25 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
         protected ITerrainModule m_terrainModule;
         protected IRegionSerialiserModule m_serialiser;
         protected List<SceneObjectGroup> m_sceneObjects;
-        protected RegionInfo m_regionInfo;
+        protected Scene m_scene;
         protected Stream m_saveStream;
-        protected EventWaitHandle m_signalWhenDoneEvent;
 
         public ArchiveWriteRequestExecution(
              List<SceneObjectGroup> sceneObjects,
              ITerrainModule terrainModule,
              IRegionSerialiserModule serialiser,
-             RegionInfo regionInfo,
+             Scene scene,
-             Stream saveStream,
+             Stream saveStream)
-             EventWaitHandle signalWhenDoneEvent)
         {
             m_sceneObjects = sceneObjects;
             m_terrainModule = terrainModule;
             m_serialiser = serialiser;
-            m_regionInfo = regionInfo;
+            m_scene = scene;
             m_saveStream = saveStream;
-            m_signalWhenDoneEvent = signalWhenDoneEvent;
         }
 
-        protected internal void ReceivedAllAssets(IDictionary<UUID, AssetBase> assetsFound, ICollection<UUID> assetsNotFoundUuids)
+        protected internal void ReceivedAllAssets(
+            IDictionary<UUID, AssetBase> assetsFound, ICollection<UUID> assetsNotFoundUuids)
         {
             foreach (UUID uuid in assetsNotFoundUuids)
             {
@@ -95,11 +92,14 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
             archive.AddFile(ArchiveConstants.CONTROL_FILE_PATH, Create0p2ControlFile());
             
             // Write out region settings
-            string settingsPath = String.Format("{0}{1}.xml", ArchiveConstants.SETTINGS_PATH, m_regionInfo.RegionName);
+            string settingsPath 
-            archive.AddFile(settingsPath, RegionSettingsSerializer.Serialize(m_regionInfo.RegionSettings));
+                = String.Format("{0}{1}.xml", ArchiveConstants.SETTINGS_PATH, m_scene.RegionInfo.RegionName);
+            archive.AddFile(settingsPath, RegionSettingsSerializer.Serialize(m_scene.RegionInfo.RegionSettings));
 
             // Write out terrain
-            string terrainPath = String.Format("{0}{1}.r32", ArchiveConstants.TERRAINS_PATH, m_regionInfo.RegionName);
+            string terrainPath 
+                = String.Format("{0}{1}.r32", ArchiveConstants.TERRAINS_PATH, m_scene.RegionInfo.RegionName);
+            
             MemoryStream ms = new MemoryStream();
             m_terrainModule.SaveToStream(terrainPath, ms);
             archive.AddFile(terrainPath, ms.ToArray());
@@ -129,10 +129,9 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
 
             archive.WriteTar(m_saveStream);
 
-            m_log.InfoFormat("[ARCHIVER]: Wrote out OpenSimulator archive for {0}", m_regionInfo.RegionName);
+            m_log.InfoFormat("[ARCHIVER]: Wrote out OpenSimulator archive for {0}", m_scene.RegionInfo.RegionName);
             
-            if (m_signalWhenDoneEvent != null)
+            m_scene.EventManager.TriggerOarFileSaved(String.Empty);
-                m_signalWhenDoneEvent.Set();
         }
 
         /// <summary>

OpenSim/Region/Environment/Modules/World/Archiver/ArchiveWriteRequestPreparation.cs

@@ -53,7 +53,6 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
 
         protected Scene m_scene;
         protected Stream m_saveStream;
-        protected EventWaitHandle m_signalWhenDoneEvent;
 
         /// <summary>
         /// Used as a temporary store of an asset which represents an object.  This can be a null if no appropriate
@@ -80,11 +79,10 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
         /// </summary>
         /// <param name="scene"></param>
         /// <param name="saveStream">The stream to which to save data.</param>
-        public ArchiveWriteRequestPreparation(Scene scene, Stream saveStream, EventWaitHandle signalWhenDoneEvent)
+        public ArchiveWriteRequestPreparation(Scene scene, Stream saveStream)
         {
             m_scene = scene;
             m_saveStream = saveStream;
-            m_signalWhenDoneEvent = signalWhenDoneEvent;
         }        
 
         /// <summary>
@@ -326,9 +324,8 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
                     sceneObjects,
                     m_scene.RequestModuleInterface<ITerrainModule>(),
                     m_scene.RequestModuleInterface<IRegionSerialiserModule>(),
-                    m_scene.RegionInfo,
+                    m_scene,
-                    m_saveStream,
+                    m_saveStream);
-                    m_signalWhenDoneEvent);
             
             new AssetsRequest(assetUuids.Keys, m_scene.AssetCache, awre.ReceivedAllAssets).Execute();
         }

OpenSim/Region/Environment/Modules/World/Archiver/ArchiverModule.cs

@@ -73,9 +73,9 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver
             new ArchiveWriteRequestPreparation(m_scene, savePath).ArchiveRegion();
         }
         
-        public void ArchiveRegion(Stream saveStream, EventWaitHandle waitHandle)
+        public void ArchiveRegion(Stream saveStream)
         {
-            new ArchiveWriteRequestPreparation(m_scene, saveStream, waitHandle).ArchiveRegion();
+            new ArchiveWriteRequestPreparation(m_scene, saveStream).ArchiveRegion();
         }
 
         public void DearchiveRegion(string loadPath)

OpenSim/Region/Environment/Modules/World/Archiver/Tests/ArchiverTests.cs

@@ -44,13 +44,20 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver.Tests
     [TestFixture]
     public class ArchiverTests
     {
+        private EventWaitHandle m_waitHandle = new AutoResetEvent(false);
+        
+        private void SaveCompleted(string errorMessage)
+        {
+            m_waitHandle.Set();
+        }
+        
         /// <summary>
         /// Test saving a V0.2 OpenSim Region Archive.
         /// </summary>
         [Test]        
         public void TestSaveOarV0p2()
         {        
-            //log4net.Config.XmlConfigurator.Configure();
+            log4net.Config.XmlConfigurator.Configure();
             
             ArchiverModule archiverModule = new ArchiverModule();
             SerialiserModule serialiserModule = new SerialiserModule();
@@ -71,11 +78,12 @@ namespace OpenSim.Region.Environment.Modules.World.Archiver.Tests
                     ownerId, shape, groupPosition, rotationOffset, offsetPosition);
             part.Name = partName;
             
-            scene.AddNewSceneObject(new SceneObjectGroup(part), false);            
+            scene.AddNewSceneObject(new SceneObjectGroup(part), false);                        
-            EventWaitHandle waitHandle = new ManualResetEvent(false);
             MemoryStream archiveWriteStream = new MemoryStream();
-            archiverModule.ArchiveRegion(archiveWriteStream, waitHandle);            
+            
-            waitHandle.WaitOne(60000, true);
+            scene.EventManager.OnOarFileSaved += SaveCompleted;
+            archiverModule.ArchiveRegion(archiveWriteStream);            
+            m_waitHandle.WaitOne(60000, true);
 
             byte[] archive = archiveWriteStream.ToArray();           
             MemoryStream archiveReadStream = new MemoryStream(archive);

OpenSim/Region/Environment/Scenes/EventManager.cs

@@ -273,6 +273,13 @@ namespace OpenSim.Region.Environment.Scenes
         /// </summary>
         public delegate void OarFileLoaded(string message);
         public event OarFileLoaded OnOarFileLoaded;
+        
+        /// <summary>
+        /// Called when an oar file has finished saving
+        /// Message is non empty string if there were problems saving the oar file
+        /// </summary>
+        public delegate void OarFileSaved(string message);
+        public event OarFileSaved OnOarFileSaved;        
 
         /// <summary>
         /// Called when the script compile queue becomes empty
@@ -415,6 +422,8 @@ namespace OpenSim.Region.Environment.Scenes
         private OnSetRootAgentSceneDelegate handlerSetRootAgentScene = null;
 
         private OarFileLoaded handlerOarFileLoaded = null;
+        private OarFileSaved handlerOarFileSaved = null;
+        
         private EmptyScriptCompileQueue handlerEmptyScriptCompileQueue = null;
 
         public void TriggerGetScriptRunning(IClientAPI controllingClient, UUID objectID, UUID itemID)
@@ -925,6 +934,13 @@ namespace OpenSim.Region.Environment.Scenes
             if (handlerOarFileLoaded != null)
                 handlerOarFileLoaded(message);
         }
+        
+        public void TriggerOarFileSaved(string message)
+        {
+            handlerOarFileSaved = OnOarFileSaved;
+            if (handlerOarFileSaved != null)
+                handlerOarFileSaved(message);
+        }        
 
         public void TriggerEmptyScriptCompileQueue(int numScriptsFailed, string message)
         {