If ScriptStopStrategy hasn't been set to co-op in [XEngine] config, then continue to generate C# that is functionality identical to historical generation

This is to eliminate disruption until co-op termination has been well-tested.
In non co-op mode, XEngine will continue to load DLLs of the existing Script class and the new XEngineScript class.
Moving to co-op mode still requires existing script DLL deletion to force recompilation, either manually or by setting DeleteScriptsOnStartup = true for one run.
This change also means that scripts which fail to initialize do not still show up as running scripts.

OpenSim/Region/ScriptEngine/Interfaces/IScriptEngine.cs

@@ -78,6 +78,14 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         string ScriptEngineName { get; }
         string ScriptEnginePath { get; }
 
+        /// <summary>
+        /// Return the name of the class that will be used for all running scripts.
+        /// </summary>
+        /// <remarks>
+        /// Each class goes in its own assembly so we don't need to otherwise distinguish the class name.
+        /// </remarks>
+        string ScriptClassName { get; }
+
         /// <summary>
         /// Return the name of the base class that will be used for all running scripts.
         /// </summary>

OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs

@@ -416,16 +416,21 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
                 case enumCompileType.cs:
                 case enumCompileType.lsl:
                     compileScript = CreateCSCompilerScript(
-                        compileScript, m_scriptEngine.ScriptBaseClassName, m_scriptEngine.ScriptBaseClassParameters);
+                        compileScript, 
+                        m_scriptEngine.ScriptClassName, 
+                        m_scriptEngine.ScriptBaseClassName, 
+                        m_scriptEngine.ScriptBaseClassParameters);
                     break;
                 case enumCompileType.vb:
-                    compileScript = CreateVBCompilerScript(compileScript, m_scriptEngine.ScriptBaseClassName);
+                    compileScript = CreateVBCompilerScript(
+                        compileScript, m_scriptEngine.ScriptClassName, m_scriptEngine.ScriptBaseClassName);
                     break;
 //                case enumCompileType.js:
 //                    compileScript = CreateJSCompilerScript(compileScript, m_scriptEngine.ScriptBaseClassName);
 //                    break;
                 case enumCompileType.yp:
-                    compileScript = CreateYPCompilerScript(compileScript, m_scriptEngine.ScriptBaseClassName);
+                    compileScript = CreateYPCompilerScript(
+                        compileScript, m_scriptEngine.ScriptClassName,m_scriptEngine.ScriptBaseClassName);
                     break;
             }
 
@@ -457,7 +462,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 //        }
 
         private static string CreateCSCompilerScript(
-            string compileScript, string baseClassName, ParameterInfo[] constructorParameters)
+            string compileScript, string className, string baseClassName, ParameterInfo[] constructorParameters)
         {
             compileScript = string.Format(    
 @"using OpenSim.Region.ScriptEngine.Shared; 
@@ -465,12 +470,13 @@ using System.Collections.Generic;
 
 namespace SecondLife 
 {{ 
-    public class Script : {0} 
+    public class {0} : {1} 
     {{
-        public Script({1}) : base({2}) {{}}
+        public {0}({2}) : base({3}) {{}}
-{3}
+{4}
     }}
 }}",
+                className,
                 baseClassName, 
                 constructorParameters != null 
                     ? string.Join(", ", Array.ConvertAll<ParameterInfo, string>(constructorParameters, pi => pi.ToString())) 
@@ -483,28 +489,28 @@ namespace SecondLife
             return compileScript;
         }
 
-        private static string CreateYPCompilerScript(string compileScript, string baseClassName)
+        private static string CreateYPCompilerScript(string compileScript, string className, string baseClassName)
         {
             compileScript = String.Empty +
                        "using OpenSim.Region.ScriptEngine.Shared.YieldProlog; " +
                         "using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\r\n" +
                         String.Empty + "namespace SecondLife { " +
-                        String.Empty + "public class Script : " + baseClassName + " { \r\n" +
+                        String.Empty + "public class " + className + " : " + baseClassName + " { \r\n" +
                         //@"public Script() { } " +
                         @"static OpenSim.Region.ScriptEngine.Shared.YieldProlog.YP YP=null; " +
-                        @"public Script() {  YP= new OpenSim.Region.ScriptEngine.Shared.YieldProlog.YP(); } " +
+                        @"public " + className + "() {  YP= new OpenSim.Region.ScriptEngine.Shared.YieldProlog.YP(); } " +
                         compileScript +
                         "} }\r\n";
 
             return compileScript;
         }
 
-        private static string CreateVBCompilerScript(string compileScript, string baseClassName)
+        private static string CreateVBCompilerScript(string compileScript, string className, string baseClassName)
         {
             compileScript = String.Empty +
                 "Imports OpenSim.Region.ScriptEngine.Shared: Imports System.Collections.Generic: " +
                 String.Empty + "NameSpace SecondLife:" +
-                String.Empty + "Public Class Script: Inherits " + baseClassName +
+                String.Empty + "Public Class " + className + ": Inherits " + baseClassName +
                 "\r\nPublic Sub New()\r\nEnd Sub: " +
                 compileScript +
                 ":End Class :End Namespace\r\n";

OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs

@@ -251,7 +251,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
         /// <param name='dom'></param>
         /// <param name='assembly'></param>
         /// <param name='stateSource'></param>
-        public void Load(AppDomain dom, string assembly, StateSource stateSource)
+        /// <returns>false if load failed, true if suceeded</returns>
+        public bool Load(AppDomain dom, string assembly, StateSource stateSource)
         {
             m_Assembly = assembly;
             m_stateSource = stateSource;
@@ -266,26 +267,53 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
     
             try
             {
+                object[] constructorParams;
+
+                Assembly scriptAssembly = dom.Load(Path.GetFileNameWithoutExtension(assembly));
+                Type scriptType = scriptAssembly.GetType("SecondLife.XEngineScript");
+
+                if (scriptType != null)
+                {
+                    constructorParams = new object[] { m_coopSleepHandle };
+                }
+                else if (!m_coopTermination)
+                {
+                    scriptType = scriptAssembly.GetType("SecondLife.Script");
+                    constructorParams = null;
+                }
+                else
+                {
+                    m_log.ErrorFormat(
+                        "[SCRIPT INSTANCE]: You must remove all existing script DLLs before using enabling co-op termination"
+                        + ", either by setting DeleteScriptsOnStartup = true in [XEngine] for one run"
+                        + " or by deleting all *.dll* files in the relevant bin/ScriptEngines/<region-id>/ directory");
+
+                    return false;
+                }
+
+//                m_log.DebugFormat(
+//                    "[SCRIPT INSTANCE]: Looking to load {0} from assembly {1} in {2}", 
+//                    scriptType.FullName, Path.GetFileNameWithoutExtension(assembly), Engine.World.Name);
+
                 if (dom != System.AppDomain.CurrentDomain)
                     m_Script 
                         = (IScript)dom.CreateInstanceAndUnwrap(
                             Path.GetFileNameWithoutExtension(assembly),
-                            "SecondLife.Script",
+                            scriptType.FullName,
                             false,
                             BindingFlags.Default,
                             null,
-                            new object[] { m_coopSleepHandle },
+                            constructorParams,
-                            null,
                             null,
                             null);
                 else
                     m_Script 
-                        = (IScript)Assembly.Load(Path.GetFileNameWithoutExtension(assembly)).CreateInstance(
+                        = (IScript)scriptAssembly.CreateInstance(
-                            "SecondLife.Script", 
+                            scriptType.FullName, 
                             false, 
                             BindingFlags.Default, 
                             null, 
-                            new object[] { m_coopSleepHandle }, 
+                            constructorParams, 
                             null, 
                             null);
 
@@ -298,6 +326,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                 m_log.ErrorFormat(
                     "[SCRIPT INSTANCE]: Error loading assembly {0}.  Exception {1}{2}",
                     assembly, e.Message, e.StackTrace);
+
+                return false;
             }
 
             try
@@ -318,7 +348,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                     "[SCRIPT INSTANCE]: Error loading script instance from assembly {0}.  Exception {1}{2}",
                     assembly, e.Message, e.StackTrace);
 
-                return;
+                return false;
             }
 
             m_SaveState = true;
@@ -390,6 +420,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 //                    presence.ControllingClient.SendAgentAlertMessage("Compile successful", false);
 
 //            }
+
+            return true;
         }
 
         public void Init()

OpenSim/Region/ScriptEngine/Shared/Instance/Tests/CoopTerminationTests.cs

@@ -245,7 +245,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance.Tests
         public void TestStopOnInfiniteJumpLoop()
         {
             TestHelpers.InMethod();
-//            TestHelpers.EnableLogging();
+            TestHelpers.EnableLogging();
 
             string script = 
 @"default

OpenSim/Region/ScriptEngine/XEngine/XEngine.cs

@@ -46,13 +46,14 @@ using OpenSim.Framework;
 using OpenSim.Framework.Console;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.ScriptEngine.Interfaces;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenSim.Region.ScriptEngine.Shared.CodeTools;
 using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Region.ScriptEngine.Shared.Api;
 using OpenSim.Region.ScriptEngine.Shared.Api.Plugins;
-using OpenSim.Region.ScriptEngine.Interfaces;
+using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenSim.Region.ScriptEngine.XEngine.ScriptBase;
 using Timer = OpenSim.Region.ScriptEngine.Shared.Api.Plugins.Timer;
 
@@ -177,6 +178,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             get { return "XEngine"; }
         }
 
+        public string ScriptClassName { get; private set; }
+
         public string ScriptBaseClassName { get; private set; }
 
         public ParameterInfo[] ScriptBaseClassParameters { get; private set; }
@@ -238,9 +241,18 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             m_ScriptConfig = configSource.Configs["XEngine"];
             m_ConfigSource = configSource;
 
+            if (m_ScriptConfig.GetString("ScriptStopStrategy", "abort") == "co-op")
+            {
+                ScriptClassName = "XEngineScript";
                 ScriptBaseClassName = typeof(XEngineScriptBase).FullName;
                 ScriptBaseClassParameters = typeof(XEngineScriptBase).GetConstructor(new Type[] { typeof(WaitHandle) }).GetParameters();
                 ScriptReferencedAssemblies = new string[] { Path.GetFileName(typeof(XEngineScriptBase).Assembly.Location) };
+            }
+            else
+            {
+                ScriptClassName = "Script";
+                ScriptBaseClassName = typeof(ScriptBaseClass).FullName;
+            }
 
 //            Console.WriteLine("ASSEMBLY NAME: {0}", ScriptReferencedAssemblies[0]);
         }
@@ -1122,7 +1134,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             }
 
             m_log.DebugFormat(
-                "[XEngine] Loading script {0}.{1}, item UUID {2}, prim UUID {3} @ {4}.{5}",
+                "[XEngine]: Loading script {0}.{1}, item UUID {2}, prim UUID {3} @ {4}.{5}",
                 part.ParentGroup.RootPart.Name, item.Name, itemID, part.UUID,
                 part.ParentGroup.RootPart.AbsolutePosition, part.ParentGroup.Scene.RegionInfo.RegionName);
 
@@ -1143,6 +1155,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                     lock (m_AddingAssemblies)
                     {
                         m_Compiler.PerformScriptCompile(script, assetID.ToString(), item.OwnerID, out assembly, out linemap);
+                        
                         if (!m_AddingAssemblies.ContainsKey(assembly)) {
                             m_AddingAssemblies[assembly] = 1;
                         } else {
@@ -1303,7 +1316,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                                                   startParam, postOnRez,
                                                   m_MaxScriptQueue);
 
-                    instance.Load(m_AppDomains[appDomain], assembly, stateSource);
+                    if (!instance.Load(m_AppDomains[appDomain], assembly, stateSource))
+                        return false;
 
 //                    if (DebugLevel >= 1)
 //                    m_log.DebugFormat(

prebuild.xml

@@ -2442,6 +2442,7 @@
       <Reference name="OpenSim.Region.ScriptEngine.Shared.CodeTools"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared.Instance"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared.Api"/>
+      <Reference name="OpenSim.Region.ScriptEngine.Shared.Api.Runtime"/>
       <Reference name="OpenSim.Region.ScriptEngine.XEngine.Api.Runtime"/>
       <Reference name="SmartThreadPool"/>
       <Reference name="Nini" path="../../../../bin/"/>