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[modules/kernel.git] / src / Container / Container_i.cxx
index 19eb2de774098aa9bd0f5a93448c5a33b6b6302c..315f7cee6c1e5f8ea7fa975b6c0d21c19892f304 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2021  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -54,6 +54,8 @@ int SIGUSR1 = 1000;
 #include "SALOME_FileTransfer_i.hxx"
 #include "Salome_file_i.hxx"
 #include "SALOME_NamingService.hxx"
+#include "SALOME_Fake_NamingService.hxx"
+#include "SALOME_Embedded_NamingService_Client.hxx"
 #include "Basics_Utils.hxx"
 
 #ifdef _XOPEN_SOURCE
@@ -119,7 +121,7 @@ int findpathof(const std::string& path, std::string&, const std::string&);
 //=============================================================================
 
 Engines_Container_i::Engines_Container_i () :
-_numInstance(0),_id(0),_NS(0)
+  _NS(0),_id(0),_numInstance(0)
 {
 }
 
@@ -133,14 +135,14 @@ Engines_Container_i::Engines_Container_i (CORBA::ORB_ptr orb,
                                           PortableServer::POA_ptr poa,
                                           char *containerName ,
                                           int argc , char* argv[],
-                                          bool activAndRegist,
+                                           SALOME_NamingService_Container_Abstract *ns,
                                           bool isServantAloneInProcess
                                           ) :
-  _numInstance(0),_isServantAloneInProcess(isServantAloneInProcess),_id(0),_NS(0)
+  _NS(nullptr),_id(0),_numInstance(0),_isServantAloneInProcess(isServantAloneInProcess)
 {
   _pid = (long)getpid();
 
-  if(activAndRegist)
+  if(ns)
     ActSigIntHandler() ;
 
   _argc = argc ;
@@ -177,22 +179,20 @@ Engines_Container_i::Engines_Container_i (CORBA::ORB_ptr orb,
   // Pour les containers paralleles: il ne faut pas enregistrer et activer
   // le container generique, mais le container specialise
 
-  if(activAndRegist)
   {
     _id = _poa->activate_object(this);
-    _NS = new SALOME_NamingService();
+    // key point : if ns is nullptr : this servant is alone in its process
+    //             if ns is not null : this servant embedded into single process.
+    _NS = ns==nullptr ? new SALOME_NamingService : ns->clone();
     _NS->init_orb( _orb ) ;
     CORBA::Object_var obj=_poa->id_to_reference(*_id);
-    Engines::Container_var pCont 
-      = Engines::Container::_narrow(obj);
+    Engines::Container_var pCont = Engines::Container::_narrow(obj);
     _remove_ref();
 
-    _containerName = _NS->BuildContainerNameForNS(containerName,
-      hostname.c_str());
+    _containerName =  SALOME_NamingService_Abstract::BuildContainerNameForNS(containerName, hostname.c_str());
     SCRUTE(_containerName);
     _NS->Register(pCont, _containerName.c_str());
-    MESSAGE("Engines_Container_i::Engines_Container_i : Container name "
-      << _containerName);
+    MESSAGE("Engines_Container_i::Engines_Container_i : Container name " << _containerName);
 
     // Python: 
     // import SALOME_Container
@@ -258,18 +258,7 @@ Engines_Container_i::~Engines_Container_i()
     delete _id;
   if(_NS)
     delete _NS;
-  for(std::map<std::string,Engines::PyNode_var>::iterator it=_dftPyNode.begin();it!=_dftPyNode.end();it++)
-    {
-      Engines::PyNode_var tmpVar((*it).second);
-      if(!CORBA::is_nil(tmpVar))
-        tmpVar->UnRegister();
-    }
-  for(std::map<std::string,Engines::PyScriptNode_var>::iterator it=_dftPyScriptNode.begin();it!=_dftPyScriptNode.end();it++)
-    {
-      Engines::PyScriptNode_var tmpVar((*it).second);
-      if(!CORBA::is_nil(tmpVar))
-        tmpVar->UnRegister();
-    }
+  cleanAllPyScripts();
 }
 
 //=============================================================================
@@ -374,24 +363,33 @@ void Engines_Container_i::Shutdown()
   */
   std::map<std::string, Engines::EngineComponent_var>::iterator itm;
   for (itm = _listInstances_map.begin(); itm != _listInstances_map.end(); itm++)
+  {
+    try
     {
-      try
-        {
-          itm->second->destroy();
-        }
-      catch(const CORBA::Exception& e)
-        {
-          // ignore this entry and continue
-        }
-      catch(...)
-        {
-          // ignore this entry and continue
-        }
+      itm->second->destroy();
+    }
+    catch(const CORBA::Exception&)
+    {
+      // ignore this entry and continue
     }
+    catch(...)
+    {
+      // ignore this entry and continue
+    }
+  }
   _listInstances_map.clear();
 
-  _NS->Destroy_FullDirectory(_containerName.c_str());
-  _NS->Destroy_Name(_containerName.c_str());
+  // NS unregistering may throw in SSL mode if master process hosting SALOME_Embedded_NamingService servant has vanished
+  // In this case it's skip it and still continue.
+  try
+  {
+    _NS->Destroy_FullDirectory(_containerName.c_str());
+    _NS->Destroy_Name(_containerName.c_str());
+  }
+  catch(...)
+  {
+  }
+  //
   if(_isServantAloneInProcess)
   {
     MESSAGE("Effective Shutdown of container Begins...");
@@ -418,15 +416,15 @@ Engines_Container_i::load_component_Library(const char* componentName, CORBA::St
   //=================================================================
   std::string retso;
   if(load_component_CppImplementation(componentName,retso))
-    {
-      reason=CORBA::string_dup("");
-      return true;
-    }
+  {
+    reason=CORBA::string_dup("");
+    return true;
+  }
   else if(retso != "ImplementationNotFound")
-    {
-      reason=CORBA::string_dup(retso.c_str());
-      return false;
-    }
+  {
+    reason=CORBA::string_dup(retso.c_str());
+    return false;
+  }
 
   retso="Component ";
   retso+=componentName;
@@ -438,15 +436,15 @@ Engines_Container_i::load_component_Library(const char* componentName, CORBA::St
   //=================================================================
   std::string retpy;
   if(load_component_PythonImplementation(componentName,retpy))
-    {
-      reason=CORBA::string_dup("");
-      return true;
-    }
+  {
+    reason=CORBA::string_dup("");
+    return true;
+  }
   else if(retpy != "ImplementationNotFound")
-    {
-      reason=CORBA::string_dup(retpy.c_str());
-      return false;
-    }
+  {
+    reason=CORBA::string_dup(retpy.c_str());
+    return false;
+  }
   
   retpy="Component ";
   retpy+=componentName;
@@ -459,15 +457,15 @@ Engines_Container_i::load_component_Library(const char* componentName, CORBA::St
   //=================================================================
   std::string retex;
   if(load_component_ExecutableImplementation(componentName,retex))
-    {
-      reason=CORBA::string_dup("");
-      return true;
-    }
+  {
+    reason=CORBA::string_dup("");
+    return true;
+  }
   else if(retex != "ImplementationNotFound")
-    {
-      reason=CORBA::string_dup(retex.c_str());
-      return false;
-    }
+  {
+    reason=CORBA::string_dup(retex.c_str());
+    return false;
+  }
 
   retex="Component ";
   retex+=componentName;
@@ -508,21 +506,21 @@ Engines_Container_i::load_component_CppImplementation(const char* componentName,
   // (see decInstanceCnt, finalize_removal))
   if (_toRemove_map.count(impl_name) != 0) _toRemove_map.erase(impl_name);
   if (_library_map.count(impl_name) != 0)
-    {
-      MESSAGE("Library " << impl_name << " already loaded");
-      _numInstanceMutex.unlock();
-      reason="";
-      return true;
-    }
+  {
+    MESSAGE("Library " << impl_name << " already loaded");
+    _numInstanceMutex.unlock();
+    reason="";
+    return true;
+  }
   _numInstanceMutex.unlock();
 
 #ifndef WIN32
   void* handle;
   handle = dlopen( impl_name.c_str() , RTLD_NOW | RTLD_GLOBAL ) ;
   if ( !handle )
-    {
-      //not loadable. Try to find the lib file in LD_LIBRARY_PATH
-      std::string path;
+  {
+    //not loadable. Try to find the lib file in LD_LIBRARY_PATH
+    std::string path;
 #ifdef __APPLE__
       char* p=getenv("DYLD_LIBRARY_PATH");
 #else
@@ -550,25 +548,30 @@ Engines_Container_i::load_component_CppImplementation(const char* componentName,
           //continue with other implementation
           reason="ImplementationNotFound";
           return false;
-        }
     }
+  }
 #else
   HINSTANCE handle;
-  handle = LoadLibrary( impl_name.c_str() );
+#ifdef UNICODE
+  std::wstring libToLoad = Kernel_Utils::utf8_decode_s( impl_name );
+#else
+  std::string libToLoad = impl_name;
+#endif
+  handle = LoadLibrary(libToLoad.c_str() );
   if ( !handle )
-    {
-      reason="ImplementationNotFound";
-    }
+  {
+    reason="ImplementationNotFound";
+  }
 #endif
 
   if ( handle )
-    {
-      _numInstanceMutex.lock();
-      _library_map[impl_name] = handle;
-      _numInstanceMutex.unlock();
-      reason="";
-      return true;
-    }
+  {
+    _numInstanceMutex.lock();
+    _library_map[impl_name] = handle;
+    _numInstanceMutex.unlock();
+    reason="";
+    return true;
+  }
 
   return false;
 
@@ -589,11 +592,11 @@ Engines_Container_i::load_component_PythonImplementation(const char* componentNa
 
   _numInstanceMutex.lock() ; // lock to be alone (stl container write)
   if (_library_map.count(aCompName) != 0)
-    {
-      _numInstanceMutex.unlock() ;
-      reason="";
-      return true; // Python Component, already imported
-    }
+  {
+    _numInstanceMutex.unlock() ;
+    reason="";
+    return true; // Python Component, already imported
+  }
   _numInstanceMutex.unlock() ;
 
   PyGILState_STATE gstate = PyGILState_Ensure();
@@ -601,30 +604,30 @@ Engines_Container_i::load_component_PythonImplementation(const char* componentNa
                                          (char*)"import_component",
                                          (char*)"s",componentName);
 
-  reason=PyString_AsString(result);
+  reason=PyUnicode_AsUTF8(result);
   Py_XDECREF(result);
   SCRUTE(reason);
   PyGILState_Release(gstate);
 
   if (reason=="")
-    {
-      //Python component has been loaded (import componentName)
-      _numInstanceMutex.lock() ; // lock to be alone (stl container write)
-      _library_map[aCompName] = (void *)_pyCont; // any non O value OK
-      _numInstanceMutex.unlock() ;
-      MESSAGE("import Python: "<< aCompName <<" OK");
-      return true;
-    }
+  {
+    //Python component has been loaded (import componentName)
+    _numInstanceMutex.lock() ; // lock to be alone (stl container write)
+    _library_map[aCompName] = (void *)_pyCont; // any non O value OK
+    _numInstanceMutex.unlock() ;
+    MESSAGE("import Python: "<< aCompName <<" OK");
+    return true;
+  }
   else if(reason=="ImplementationNotFound")
-    {
-      //Python implementation has not been found. Continue with other implementation
-      reason="ImplementationNotFound";
-    }
+  {
+    //Python implementation has not been found. Continue with other implementation
+    reason="ImplementationNotFound";
+  }
   else
-    {
-      //Python implementation has been found but loading has failed
-      std::cerr << reason << std::endl;
-    }
+  {
+    //Python implementation has been found but loading has failed
+    std::cerr << reason << std::endl;
+  }
   return false;
 
 }
@@ -650,27 +653,27 @@ Engines_Container_i::load_component_ExecutableImplementation(const char* compone
   if(p)path=p;
 
   if (findpathof(path, pth, executable))
+  {
+    if(checkifexecutable(pth))
     {
-      if(checkifexecutable(pth))
-        {
-          _numInstanceMutex.lock() ; // lock to be alone (stl container write)
-          _library_map[executable] = (void *)1; // any non O value OK
-          _numInstanceMutex.unlock() ;
-          MESSAGE("import executable: "<< pth <<" OK");
-          reason="";
-          return true;
-        }
-      reason="Component ";
-      reason+=aCompName;
-      reason+=": implementation found ";
-      reason+=pth;
-      reason+=" but it is not executable";
-      std::cerr << reason << std::endl;
+      _numInstanceMutex.lock() ; // lock to be alone (stl container write)
+      _library_map[executable] = (void *)1; // any non O value OK
+      _numInstanceMutex.unlock() ;
+      MESSAGE("import executable: "<< pth <<" OK");
+      reason="";
+      return true;
     }
+    reason="Component ";
+    reason+=aCompName;
+    reason+=": implementation found ";
+    reason+=pth;
+    reason+=" but it is not executable";
+    std::cerr << reason << std::endl;
+  }
   else
-    {
-      reason="ImplementationNotFound";
-    }
+  {
+    reason="ImplementationNotFound";
+  }
   return false;
 }
 
@@ -681,19 +684,16 @@ Engines_Container_i::load_component_ExecutableImplementation(const char* compone
 *  The servant registers itself to naming service and Registry.
 *  \param genericRegisterName  Name of the component instance to register
 *                         in Registry & Name Service (without _inst_n suffix)
-*  \param studyId         0 for multiStudy instance, 
-*                         study Id (>0) otherwise
 *  \return a loaded component
 */
 //=============================================================================
 Engines::EngineComponent_ptr
-Engines_Container_i::create_component_instance(const char*genericRegisterName,
-                                               CORBA::Long studyId)
+Engines_Container_i::create_component_instance(const char*genericRegisterName)
 {
   Engines::FieldsDict_var env = new Engines::FieldsDict;
   char* reason;
   Engines::EngineComponent_ptr compo =
-    create_component_instance_env(genericRegisterName, studyId, env, reason);
+    create_component_instance_env(genericRegisterName, env, reason);
   CORBA::string_free(reason);
   return compo;
 }
@@ -705,8 +705,6 @@ Engines_Container_i::create_component_instance(const char*genericRegisterName,
 *  The servant registers itself to naming service and Registry.
 *  \param genericRegisterName  Name of the component instance to register
 *                         in Registry & Name Service (without _inst_n suffix)
-*  \param studyId         0 for multiStudy instance, 
-*                         study Id (>0) otherwise
 *  \param env             dict of env variables
 *  \param reason          explains error when create_component_instance_env fails
 *  \return a loaded component
@@ -714,44 +712,36 @@ Engines_Container_i::create_component_instance(const char*genericRegisterName,
 //=============================================================================
 Engines::EngineComponent_ptr
 Engines_Container_i::create_component_instance_env(const char*genericRegisterName,
-                                                   CORBA::Long studyId,
                                                    const Engines::FieldsDict& env,
                                                    CORBA::String_out reason)
 {
-  if (studyId < 0)
-    {
-      INFOS("studyId must be > 0 for mono study instance, =0 for multiStudy");
-      reason=CORBA::string_dup("studyId must be > 0 for mono study instance, =0 for multiStudy");
-      return Engines::EngineComponent::_nil() ;
-    }
-
   std::string error;
   if (_library_map.count(genericRegisterName) != 0)
-    {
-      // It's a Python component
-      Engines::EngineComponent_ptr compo = createPythonInstance(genericRegisterName, studyId, error);
-      reason=CORBA::string_dup(error.c_str());
-      return compo;
-    }
+  {
+    // It's a Python component
+    Engines::EngineComponent_ptr compo = createPythonInstance(genericRegisterName, error);
+    reason=CORBA::string_dup(error.c_str());
+    return compo;
+  }
 
   std::string impl_name = std::string(LIB) + genericRegisterName + ENGINESO;
   if (_library_map.count(impl_name) != 0)
-    {
-      // It's a C++ component
-      void* handle = _library_map[impl_name];
-      Engines::EngineComponent_ptr compo = createInstance(genericRegisterName, handle, studyId, error);
-      reason=CORBA::string_dup(error.c_str());
-      return compo;
-    }
+  {
+    // It's a C++ component
+    void* handle = _library_map[impl_name];
+    Engines::EngineComponent_ptr compo = createInstance(genericRegisterName, handle, error);
+    reason=CORBA::string_dup(error.c_str());
+    return compo;
+  }
 
   impl_name = std::string(genericRegisterName) + ".exe";
   if (_library_map.count(impl_name) != 0)
-    {
-      //It's an executable component
-      Engines::EngineComponent_ptr compo = createExecutableInstance(genericRegisterName, studyId, env, error);
-      reason=CORBA::string_dup(error.c_str());
-      return compo;
-    }
+  {
+    //It's an executable component
+    Engines::EngineComponent_ptr compo = createExecutableInstance(genericRegisterName, env, error);
+    reason=CORBA::string_dup(error.c_str());
+    return compo;
+  }
 
   error="load_component_Library has probably not been called for component: ";
   error += genericRegisterName;
@@ -764,8 +754,6 @@ Engines_Container_i::create_component_instance_env(const char*genericRegisterNam
 //! Create a new component instance (Executable implementation)
 /*! 
 *  \param CompName               Name of the component instance
-*  \param studyId                0 for multiStudy instance, 
-*                                study Id (>0) otherwise
 *  \param env                    dict of env variables
 *  \param reason                 explains error when creation fails
 *  \return a loaded component
@@ -776,7 +764,7 @@ Engines_Container_i::create_component_instance_env(const char*genericRegisterNam
 */
 //=============================================================================
 Engines::EngineComponent_ptr
-Engines_Container_i::createExecutableInstance(std::string CompName, int studyId,
+Engines_Container_i::createExecutableInstance(std::string CompName,
                                               const Engines::FieldsDict& env,
                                               std::string& reason)
 {
@@ -830,35 +818,35 @@ Engines_Container_i::createExecutableInstance(std::string CompName, int studyId,
   int status;
   pid_t pid = fork();
   if(pid == 0) // child
+  {
+    for (CORBA::ULong i=0; i < env.length(); i++)
     {
-      for (CORBA::ULong i=0; i < env.length(); i++)
-        {
-          if (env[i].value.type()->kind() == CORBA::tk_string)
-            {
-              const char* value;
-              env[i].value >>= value;
-              std::string s(env[i].key);
-              s+='=';
-              s+=value;
-              putenv(strdup(s.c_str()));
-            }
-        }
-
-      execl("/bin/sh", "sh", "-c", command.c_str() , (char *)0);
-      status=-1;
+      if (env[i].value.type()->kind() == CORBA::tk_string)
+      {
+        const char* value;
+        env[i].value >>= value;
+        std::string s(env[i].key);
+        s+='=';
+        s+=value;
+        putenv(strdup(s.c_str()));
+      }
     }
+
+    execl("/bin/sh", "sh", "-c", command.c_str() , (char *)0);
+    status=-1;
+  }
   else if(pid < 0)       // failed to fork
-    {
-      status=-1;
-    }
+  {
+    status=-1;
+  }
   else            //parent
+  {
+    pid_t tpid;
+    do
     {
-      pid_t tpid;
-      do
-        {
-          tpid = wait(&status);
-        } while (tpid != pid);
-    }
+      tpid = wait(&status);
+    } while (tpid != pid);
+  }
 #else
   // launch component with a system call
   int status=system(command.c_str());
@@ -928,14 +916,12 @@ Engines_Container_i::createExecutableInstance(std::string CompName, int studyId,
 //! Create a new component instance (Python implementation)
 /*! 
 *  \param CompName               Name of the component instance
-*  \param studyId                0 for multiStudy instance, 
-*                                study Id (>0) otherwise
 *  \param reason                 explains error when creation fails
 *  \return a loaded component
 */
 //=============================================================================
 Engines::EngineComponent_ptr
-Engines_Container_i::createPythonInstance(std::string CompName, int studyId,
+Engines_Container_i::createPythonInstance(std::string CompName,
                                           std::string& reason)
 {
   Engines::EngineComponent_var iobject = Engines::EngineComponent::_nil() ;
@@ -953,10 +939,9 @@ Engines_Container_i::createPythonInstance(std::string CompName, int studyId,
   PyGILState_STATE gstate = PyGILState_Ensure();
   PyObject *result = PyObject_CallMethod(_pyCont,
                                          (char*)"create_component_instance",
-                                         (char*)"ssl",
+                                         (char*)"ss",
                                          CompName.c_str(),
-                                         instanceName.c_str(),
-                                         studyId);
+                                         instanceName.c_str());
   const char *ior;
   const char *error;
   PyArg_ParseTuple(result,"ss", &ior, &error);
@@ -966,11 +951,11 @@ Engines_Container_i::createPythonInstance(std::string CompName, int studyId,
   PyGILState_Release(gstate);
 
   if( iors!="" )
-    {
-      CORBA::Object_var obj = _orb->string_to_object(iors.c_str());
-      iobject = Engines::EngineComponent::_narrow( obj ) ;
-      _listInstances_map[instanceName] = iobject;
-    }
+  {
+    CORBA::Object_var obj = _orb->string_to_object(iors.c_str());
+    iobject = Engines::EngineComponent::_narrow( obj ) ;
+    _listInstances_map[instanceName] = iobject;
+  }
   return iobject._retn();
 }
 
@@ -993,10 +978,9 @@ Engines_Container_i::create_python_service_instance(const char * CompName,
   PyGILState_STATE gstate = PyGILState_Ensure();
   PyObject *result = PyObject_CallMethod(_pyCont,
                                          (char*)"create_component_instance",
-                                         (char*)"ssl",
+                                         (char*)"ss",
                                          CompName,
-                                         instanceName.c_str(),
-                                         0);
+                                         instanceName.c_str());
   const char *ior;
   const char *error;
   PyArg_ParseTuple(result,"ss", &ior, &error);
@@ -1017,8 +1001,6 @@ Engines_Container_i::create_python_service_instance(const char * CompName,
 *                                in Registry & Name Service,
 *                                (without _inst_n suffix, like "COMPONENT")
 *  \param handle                 loaded library handle
-*  \param studyId                0 for multiStudy instance, 
-*                                study Id (>0) otherwise
 *  \param reason                 explains error when creation fails
 *  \return a loaded component
 * 
@@ -1034,7 +1016,6 @@ Engines_Container_i::create_python_service_instance(const char * CompName,
 Engines::EngineComponent_ptr
 Engines_Container_i::createInstance(std::string genericRegisterName,
                                     void *handle,
-                                    int studyId,
                                     std::string& reason)
 {
   // --- find the factory
@@ -1088,30 +1069,23 @@ Engines_Container_i::createInstance(std::string genericRegisterName,
     id = (Component_factory) ( _orb, _poa, _id, instanceName.c_str(),
                                                 aGenRegisterName.c_str() ) ;
     if (id == NULL)
-      {
-        reason="Can't get ObjectId from factory";
-        INFOS(reason);
-        return iobject._retn();
-      }
+    {
+      reason="Can't get ObjectId from factory";
+      INFOS(reason);
+      return iobject._retn();
+    }
 
-    // --- get reference & servant from id
+    // --- get reference from id
 
     CORBA::Object_var obj = _poa->id_to_reference(*id);
     iobject = Engines::EngineComponent::_narrow( obj ) ;
 
-    Engines_Component_i *servant =
-      dynamic_cast<Engines_Component_i*>(_poa->reference_to_servant(iobject));
-    ASSERT(servant);
-    //SCRUTE(servant->_refcount_value());
     _numInstanceMutex.lock() ; // lock to be alone (stl container write)
     _listInstances_map[instanceName] = iobject;
     _cntInstances_map[aGenRegisterName] += 1;
     _numInstanceMutex.unlock() ;
     SCRUTE(aGenRegisterName);
     SCRUTE(_cntInstances_map[aGenRegisterName]);
-    servant->setStudyId(studyId);
-    servant->_remove_ref(); // do not need servant any more (remove ref from reference_to_servant)
-    //SCRUTE(servant->_refcount_value());
 
     // --- register the engine under the name
     //     containerName(.dir)/instanceName(.object)
@@ -1133,14 +1107,11 @@ Engines_Container_i::createInstance(std::string genericRegisterName,
 *  CORBA method: Finds a servant instance of a component
 *  \param registeredName  Name of the component in Registry or Name Service,
 *                         without instance suffix number
-*  \param studyId         0 if instance is not associated to a study,
-*                         >0 otherwise (== study id)
-*  \return the first instance found with same studyId
+*  \return the first found instance
 */
 //=============================================================================
 Engines::EngineComponent_ptr
-Engines_Container_i::find_component_instance( const char* registeredName,
-                                              CORBA::Long studyId)
+Engines_Container_i::find_component_instance( const char* registeredName)
 {
   Engines::EngineComponent_var anEngine = Engines::EngineComponent::_nil();
   std::map<std::string,Engines::EngineComponent_var>::iterator itm =_listInstances_map.begin();
@@ -1151,10 +1122,7 @@ Engines_Container_i::find_component_instance( const char* registeredName,
     if (instance.find(registeredName) == 0)
     {
       anEngine = (*itm).second;
-      if (studyId == anEngine->getStudyId())
-      {
-        return anEngine._retn();
-      }
+      return anEngine._retn();
     }
     itm++;
   }
@@ -1258,7 +1226,7 @@ void Engines_Container_i::decInstanceCnt(std::string genericRegisterName)
 
 Engines::EngineComponent_ptr
 Engines_Container_i::load_impl( const char* genericRegisterName,
-                                const char* componentName )
+                                const char* /*componentName*/ )
 {
   char* reason;
   std::string impl_name = std::string(LIB) + genericRegisterName + ENGINESO;
@@ -1269,6 +1237,20 @@ Engines_Container_i::load_impl( const char* genericRegisterName,
   return iobject._retn();
 }
 
+Engines::EmbeddedNamingService_ptr Engines_Container_i::get_embedded_NS_if_ssl()
+{
+  SALOME_Embedded_NamingService_Client *nsc(dynamic_cast<SALOME_Embedded_NamingService_Client *>(this->_NS));
+  if(nsc)
+  {
+    Engines::EmbeddedNamingService_var obj = nsc->GetObject();
+    return Engines::EmbeddedNamingService::_duplicate(obj);
+  }
+  else
+  {
+    return Engines::EmbeddedNamingService::_nil();
+  } 
+}
+
 //=============================================================================
 //! Finds an already existing component instance or create a new instance
 /*!
@@ -1320,29 +1302,11 @@ Engines_Container_i::find_or_create_instance(std::string genericRegisterName,
       {
         iobject = createInstance(genericRegisterName,
                                  handle,
-                                 0,
-                                 reason); // force multiStudy instance here !
+                                 reason);
       }
       else
       {
         iobject = Engines::EngineComponent::_narrow( obj ) ;
-        Engines_Component_i *servant =
-          dynamic_cast<Engines_Component_i*>
-          (_poa->reference_to_servant(iobject));
-        ASSERT(servant)
-          int studyId = servant->getStudyId();
-        ASSERT (studyId >= 0);
-        if (studyId == 0) // multiStudy instance, OK
-        {
-          // No ReBind !
-          MESSAGE(component_registerBase.c_str()<<" already bound");
-        }
-        else // monoStudy instance: NOK
-        {
-          iobject = Engines::EngineComponent::_nil();
-          INFOS("load_impl & find_component_instance methods "
-            << "NOT SUITABLE for mono study components");
-        }
       }
     }
     catch (...)
@@ -1362,7 +1326,7 @@ Engines_Container_i::find_or_create_instance(std::string genericRegisterName,
 bool Engines_Container_i::isPythonContainer(const char* ContainerName)
 {
   bool ret=false;
-  int len=strlen(ContainerName);
+  size_t len=strlen(ContainerName);
   if(len>=2)
     if(strcmp(ContainerName+len-2,"Py")==0)
       ret=true;
@@ -1445,9 +1409,9 @@ void SetCpuUsed() ;
 void CallCancelThread() ;
 
 #ifndef WIN32
-void SigIntHandler(int what ,
+void SigIntHandler(int /*what*/ ,
                    siginfo_t * siginfo ,
-                   void * toto ) 
+                   void * /*toto*/ ) 
 {
   //PAL9042 JR : during the execution of a Signal Handler (and of methods called through Signal Handlers)
   //             use of streams (and so on) should never be used because :
@@ -1601,7 +1565,7 @@ Engines_Container_i::createSalome_file(const char* origFileName)
       aSalome_file->setLocalFile(origFileName);
       aSalome_file->recvFiles();
     }
-    catch (const SALOME::SALOME_Exception& e)
+    catch (const SALOME::SALOME_Exception& /*e*/) //!< TODO: unused variable
     {
       return Engines::Salome_file::_nil();
     }
@@ -1632,36 +1596,36 @@ void Engines_Container_i::copyFile(Engines::Container_ptr container, const char*
 
   FILE* fp;
   if ((fp = fopen(localFile,"wb")) == NULL)
-    {
-      INFOS("file " << localFile << " cannot be open for writing");
-      return;
-    }
+  {
+    INFOS("file " << localFile << " cannot be open for writing");
+    return;
+  }
 
   CORBA::Long fileId = fileTransfer->open(remoteFile);
   if (fileId > 0)
+  {
+    Engines::fileBlock* aBlock;
+    int toFollow = 1;
+    int ctr=0;
+    while (toFollow)
     {
-      Engines::fileBlock* aBlock;
-      int toFollow = 1;
-      int ctr=0;
-      while (toFollow)
-        {
-          ctr++;
-          //SCRUTE(ctr);
-          aBlock = fileTransfer->getBlock(fileId);
-          toFollow = aBlock->length();
-          //SCRUTE(toFollow);
-          CORBA::Octet *buf = aBlock->get_buffer();
-          fwrite(buf, sizeof(CORBA::Octet), toFollow, fp);
-          delete aBlock;
-        }
-      fclose(fp);
-      MESSAGE("end of transfer");
-      fileTransfer->close(fileId);
+      ctr++;
+      //SCRUTE(ctr);
+      aBlock = fileTransfer->getBlock(fileId);
+      toFollow = aBlock->length();
+      //SCRUTE(toFollow);
+      CORBA::Octet *buf = aBlock->get_buffer();
+      fwrite(buf, sizeof(CORBA::Octet), toFollow, fp);
+      delete aBlock;
     }
+    fclose(fp);
+    MESSAGE("end of transfer");
+    fileTransfer->close(fileId);
+  }
   else
-    {
-      INFOS("open reference file for copy impossible");
-    }
+  {
+    INFOS("open reference file for copy impossible");
+  }
 }
 
 //=============================================================================
@@ -1673,57 +1637,57 @@ void Engines_Container_i::copyFile(Engines::Container_ptr container, const char*
 //=============================================================================
 Engines::PyNode_ptr Engines_Container_i::createPyNode(const char* nodeName, const char* code)
 {
-    Engines::PyNode_var node= Engines::PyNode::_nil();
+  Engines::PyNode_var node= Engines::PyNode::_nil();
 
-    PyGILState_STATE gstate = PyGILState_Ensure();
-    PyObject *res = PyObject_CallMethod(_pyCont,
-      (char*)"create_pynode",
-      (char*)"ss",
-      nodeName,
-      code);
-    if(res==NULL)
-      {
-        //internal error
-        PyErr_Print();
-        PyGILState_Release(gstate);
-        SALOME::ExceptionStruct es;
-        es.type = SALOME::INTERNAL_ERROR;
-        es.text = "can not create a python node";
-        throw SALOME::SALOME_Exception(es);
-      }
-    long ierr=PyInt_AsLong(PyTuple_GetItem(res,0));
-    PyObject* result=PyTuple_GetItem(res,1);
-    std::string astr=PyString_AsString(result);
-    Py_DECREF(res);
+  PyGILState_STATE gstate = PyGILState_Ensure();
+  PyObject *res = PyObject_CallMethod(_pyCont,
+    (char*)"create_pynode",
+    (char*)"ss",
+    nodeName,
+    code);
+  if(res==NULL)
+  {
+    //internal error
+    PyErr_Print();
     PyGILState_Release(gstate);
-    if(ierr==0)
-      {
-        Utils_Locker lck(&_mutexForDftPy);
-        CORBA::Object_var obj=_orb->string_to_object(astr.c_str());
-        node=Engines::PyNode::_narrow(obj);
-        std::map<std::string,Engines::PyNode_var>::iterator it(_dftPyNode.find(nodeName));
-        if(it==_dftPyNode.end())
-          {
-            _dftPyNode[nodeName]=node;
-          }
-        else
-          {
-            Engines::PyNode_var oldNode((*it).second);
-            if(!CORBA::is_nil(oldNode))
-              oldNode->UnRegister();
-            (*it).second=node;
-          }
-        if(!CORBA::is_nil(node))
-          node->Register();
-        return node._retn();
-      }
+    SALOME::ExceptionStruct es;
+    es.type = SALOME::INTERNAL_ERROR;
+    es.text = "can not create a python node";
+    throw SALOME::SALOME_Exception(es);
+  }
+  long ierr=PyLong_AsLong(PyTuple_GetItem(res,0));
+  PyObject* result=PyTuple_GetItem(res,1);
+  std::string astr=PyUnicode_AsUTF8(result);
+  Py_DECREF(res);
+  PyGILState_Release(gstate);
+  if(ierr==0)
+  {
+    Utils_Locker lck(&_mutexForDftPy);
+    CORBA::Object_var obj=_orb->string_to_object(astr.c_str());
+    node=Engines::PyNode::_narrow(obj);
+    std::map<std::string,Engines::PyNode_var>::iterator it(_dftPyNode.find(nodeName));
+    if(it==_dftPyNode.end())
+    {
+      _dftPyNode[nodeName]=node;
+    }
     else
-      {
-        SALOME::ExceptionStruct es;
-        es.type = SALOME::INTERNAL_ERROR;
-        es.text = astr.c_str();
-        throw SALOME::SALOME_Exception(es);
-      }
+    {
+      Engines::PyNode_var oldNode((*it).second);
+      if(!CORBA::is_nil(oldNode))
+        oldNode->UnRegister();
+      (*it).second=node;
+    }
+    if(!CORBA::is_nil(node))
+      node->Register();
+    return node._retn();
+  }
+  else
+  {
+    SALOME::ExceptionStruct es;
+    es.type = SALOME::INTERNAL_ERROR;
+    es.text = astr.c_str();
+    throw SALOME::SALOME_Exception(es);
+  }
 }
 
 //=============================================================================
@@ -1738,13 +1702,13 @@ Engines::PyNode_ptr  Engines_Container_i::getDefaultPyNode(const char *nodeName)
   if(it==_dftPyNode.end())
     return Engines::PyNode::_nil();
   else
-    {
-      Engines::PyNode_var tmpVar((*it).second);
-      if(!CORBA::is_nil(tmpVar))
-        return Engines::PyNode::_duplicate(tmpVar);
-      else
-        return Engines::PyNode::_nil();
-    }
+  {
+    Engines::PyNode_var tmpVar((*it).second);
+    if(!CORBA::is_nil(tmpVar))
+      return Engines::PyNode::_duplicate(tmpVar);
+    else
+      return Engines::PyNode::_nil();
+  }
 }
 
 //=============================================================================
@@ -1756,58 +1720,89 @@ Engines::PyNode_ptr  Engines_Container_i::getDefaultPyNode(const char *nodeName)
 //=============================================================================
 Engines::PyScriptNode_ptr Engines_Container_i::createPyScriptNode(const char* nodeName, const char* code)
 {
-    Engines::PyScriptNode_var node= Engines::PyScriptNode::_nil();
+  Engines::PyScriptNode_var node= Engines::PyScriptNode::_nil();
 
-    PyGILState_STATE gstate = PyGILState_Ensure();
-    PyObject *res = PyObject_CallMethod(_pyCont,
-      (char*)"create_pyscriptnode",
-      (char*)"ss",
-      nodeName,
-      code);
-    if(res==NULL)
-      {
-        //internal error
-        PyErr_Print();
-        PyGILState_Release(gstate);
-        SALOME::ExceptionStruct es;
-        es.type = SALOME::INTERNAL_ERROR;
-        es.text = "can not create a python node";
-        throw SALOME::SALOME_Exception(es);
-      }
-    long ierr=PyInt_AsLong(PyTuple_GetItem(res,0));
-    PyObject* result=PyTuple_GetItem(res,1);
-    std::string astr=PyString_AsString(result);
-    Py_DECREF(res);
+  PyGILState_STATE gstate = PyGILState_Ensure();
+  PyObject *res = PyObject_CallMethod(_pyCont,
+    (char*)"create_pyscriptnode",
+    (char*)"ss",
+    nodeName,
+    code);
+  if(res==NULL)
+  {
+    //internal error
+    PyErr_Print();
     PyGILState_Release(gstate);
+    SALOME::ExceptionStruct es;
+    es.type = SALOME::INTERNAL_ERROR;
+    es.text = "can not create a python node";
+    throw SALOME::SALOME_Exception(es);
+  }
+  long ierr=PyLong_AsLong(PyTuple_GetItem(res,0));
+  PyObject* result=PyTuple_GetItem(res,1);
+  std::string astr=PyUnicode_AsUTF8(result);
+  Py_DECREF(res);
+  PyGILState_Release(gstate);
 
-    if(ierr==0)
-      {
-        Utils_Locker lck(&_mutexForDftPy);
-        CORBA::Object_var obj=_orb->string_to_object(astr.c_str());
-        node=Engines::PyScriptNode::_narrow(obj);
-        std::map<std::string,Engines::PyScriptNode_var>::iterator it(_dftPyScriptNode.find(nodeName));
-        if(it==_dftPyScriptNode.end())
-          {
-            _dftPyScriptNode[nodeName]=node;
-          }
-        else
-          {
-            Engines::PyScriptNode_var oldNode((*it).second);
-            if(!CORBA::is_nil(oldNode))
-              oldNode->UnRegister();
-            (*it).second=node;
-          }
-        if(!CORBA::is_nil(node))
-          node->Register();
-        return node._retn();
-      }
+  if(ierr==0)
+  {
+    Utils_Locker lck(&_mutexForDftPy);
+    CORBA::Object_var obj=_orb->string_to_object(astr.c_str());
+    node=Engines::PyScriptNode::_narrow(obj);
+    std::map<std::string,Engines::PyScriptNode_var>::iterator it(_dftPyScriptNode.find(nodeName));
+    if(it==_dftPyScriptNode.end())
+    {
+      _dftPyScriptNode[nodeName]=node;
+    }
     else
-      {
-        SALOME::ExceptionStruct es;
-        es.type = SALOME::INTERNAL_ERROR;
-        es.text = astr.c_str();
-        throw SALOME::SALOME_Exception(es);
-      }
+    {
+      Engines::PyScriptNode_var oldNode((*it).second);
+      if(!CORBA::is_nil(oldNode))
+        oldNode->UnRegister();
+      (*it).second=node;
+    }
+    return node._retn();
+  }
+  else
+  {
+    SALOME::ExceptionStruct es;
+    es.type = SALOME::INTERNAL_ERROR;
+    es.text = astr.c_str();
+    throw SALOME::SALOME_Exception(es);
+  }
+}
+
+void Engines_Container_i::removePyScriptNode(const char *nodeName)
+{
+  std::map<std::string,Engines::PyScriptNode_var>::iterator it(_dftPyScriptNode.find(nodeName));
+  if(it==_dftPyScriptNode.end())
+    {
+      std::ostringstream oss; oss << "Engines_Container_i::removePyScriptNode : node \"" << nodeName << "\" is not map !";
+      SALOME::ExceptionStruct es;
+      es.type = SALOME::INTERNAL_ERROR;
+      es.text = oss.str().c_str();
+      throw SALOME::SALOME_Exception(es);
+    }
+  (*it).second->UnRegister();
+  _dftPyScriptNode.erase(it);
+}
+
+void Engines_Container_i::cleanAllPyScripts()
+{
+  for(std::map<std::string,Engines::PyNode_var>::iterator it=_dftPyNode.begin();it!=_dftPyNode.end();it++)
+    {
+      Engines::PyNode_var tmpVar((*it).second);
+      if(!CORBA::is_nil(tmpVar))
+        tmpVar->UnRegister();
+    }
+  _dftPyNode.clear();
+  for(std::map<std::string,Engines::PyScriptNode_var>::iterator it=_dftPyScriptNode.begin();it!=_dftPyScriptNode.end();it++)
+    {
+      Engines::PyScriptNode_var tmpVar((*it).second);
+      if(!CORBA::is_nil(tmpVar))
+        tmpVar->UnRegister();
+    }
+  _dftPyScriptNode.clear();
 }
 
 //=============================================================================
@@ -1822,13 +1817,13 @@ Engines::PyScriptNode_ptr Engines_Container_i::getDefaultPyScriptNode(const char
   if(it==_dftPyScriptNode.end())
     return Engines::PyScriptNode::_nil();
   else
-    {
-      Engines::PyScriptNode_var tmpVar((*it).second);
-      if(!CORBA::is_nil(tmpVar))
-        return Engines::PyScriptNode::_duplicate(tmpVar);
-      else
-        return Engines::PyScriptNode::_nil();
-    }
+  {
+    Engines::PyScriptNode_var tmpVar((*it).second);
+    if(!CORBA::is_nil(tmpVar))
+      return Engines::PyScriptNode::_duplicate(tmpVar);
+    else
+      return Engines::PyScriptNode::_nil();
+  }
 }
 
 //=============================================================================
@@ -1906,13 +1901,57 @@ void Engines_Container_i::clearTemporaryFiles()
 {
   std::list<std::string>::const_iterator it;
   for ( it = _tmp_files.begin(); it != _tmp_files.end(); ++it ) {
-#ifdef WIN32
-    std::string command = "del /F /P";
+#if defined(WIN32) && defined(UNICODE)
+       std::wstring aFile = Kernel_Utils::utf8_decode_s(*it);
+       std::wstring command = (GetFileAttributes(aFile.c_str()) == FILE_ATTRIBUTE_DIRECTORY) ? L"rd /Q \"" : L"del /F /Q \"";
+       command += aFile;
+       command += L"\" 2>NUL";
+       _wsystem(command.c_str());
 #else
-    std::string command = "rm -rf ";
+#if defined(WIN32)
+       std::string aFile = *it;
+       std::string command = (GetFileAttributes(aFile.c_str()) == FILE_ATTRIBUTE_DIRECTORY) ? "rd /Q \"" : "del /F /Q \"";
+       command += aFile;
+       command += "\" 2>NUL";
+#else
+       std::string command = "rm -rf ";
+       command += *it;
+#endif
+       system(command.c_str());
 #endif
-    command += *it;
-    system( command.c_str() );
   }
   _tmp_files.clear();
 }
+
+static Engines_Container_i *_container_singleton_ssl = nullptr;
+
+static Engines::Container_var _container_ref_singleton_ssl;
+
+Engines_Container_i *KERNEL::getContainerSA()
+{
+  if(!_container_singleton_ssl)
+  {
+    int argc(0);
+    CORBA::ORB_var orb = CORBA::ORB_init(argc,nullptr);
+    CORBA::Object_var obj = orb->resolve_initial_references("RootPOA");
+    PortableServer::POA_var poa = PortableServer::POA::_narrow(obj);
+    PortableServer::POAManager_var pman = poa->the_POAManager();
+    CORBA::PolicyList policies;
+    policies.length(0);
+    //
+    char *argv[4] = {"Container","FactoryServer","toto",nullptr};
+    SALOME_Fake_NamingService ns;
+    _container_singleton_ssl = new Engines_Container_i(orb,poa,"FactoryServer",2,argv,&ns,false);
+    PortableServer::ObjectId * cont_id = _container_singleton_ssl->getCORBAId();
+    //
+    CORBA::Object_var zeRef = poa->id_to_reference(*cont_id);
+    _container_ref_singleton_ssl = Engines::Container::_narrow(zeRef);
+  }
+  return _container_singleton_ssl;
+}
+
+Engines::Container_var KERNEL::getContainerRefSA()
+{
+  getContainerSA();
+  return _container_ref_singleton_ssl;
+}