-// SALOME Container : implementation of container and engine for Kernel
+// Copyright (C) 2007-2011 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
//
-// Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
-// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-// See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License.
//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+// SALOME Container : implementation of container and engine for Kernel
// File : Container_i.cxx
// Author : Paul RASCLE, EDF - MARC TAJCHMAN, CEA
// Module : SALOME
// $Header$
-
//#define private public
-#include <SALOMEconfig.h>
-#ifndef WNT
-#include CORBA_SERVER_HEADER(SALOME_Component)
-#else
-#include <SALOME_Component.hh>
-#endif
-#include <pthread.h> // must be before Python.h !
-#include <Python.h>
-#include "SALOME_Container_i.hxx"
-#include "SALOME_Component_i.hxx"
-#include "SALOME_NamingService.hxx"
-#include "OpUtil.hxx"
+//
#include <string.h>
#include <stdio.h>
-#ifndef WNT
+#include <time.h>
+#include <sys/types.h>
+#ifndef WIN32
+#include <sys/time.h>
#include <dlfcn.h>
#include <unistd.h>
+#include <sys/wait.h>
#else
-#include "../../adm/win32/SALOME_WNT.hxx"
#include <signal.h>
#include <process.h>
+#include <direct.h>
int SIGUSR1 = 1000;
#endif
-#include "Container_init_python.hxx"
#include "utilities.h"
-using namespace std;
+#include <SALOMEconfig.h>
+#include CORBA_SERVER_HEADER(SALOME_Component)
+#include CORBA_SERVER_HEADER(SALOME_Exception)
+#include <pthread.h> // must be before Python.h !
+#include "SALOME_Container_i.hxx"
+#include "SALOME_Component_i.hxx"
+#include "SALOME_FileRef_i.hxx"
+#include "SALOME_FileTransfer_i.hxx"
+#include "Salome_file_i.hxx"
+#include "SALOME_NamingService.hxx"
+#include "Basics_Utils.hxx"
+
+#include <Python.h>
+#include "Container_init_python.hxx"
bool _Sleeping = false ;
int _ArgC ;
char ** _ArgV ;
-
-// Containers with name FactoryServer are started via rsh in LifeCycleCORBA
-// Other Containers are started via start_impl of FactoryServer
-
extern "C" {void ActSigIntHandler() ; }
-#ifndef WNT
+#ifndef WIN32
extern "C" {void SigIntHandler(int, siginfo_t *, void *) ; }
#else
- extern "C" {void SigIntHandler( int ) ; }
+extern "C" {void SigIntHandler( int ) ; }
#endif
+#ifndef WIN32
+#define LIB "lib"
+#define ENGINESO "Engine.so"
+#else
+#define LIB ""
+#define ENGINESO "Engine.dll"
+#endif
-map<std::string, int> Engines_Container_i::_cntInstances_map;
-map<std::string, void *> Engines_Container_i::_library_map;
-map<std::string, void *> Engines_Container_i::_toRemove_map;
+#ifdef WIN32
+#define SEP ';'
+#define SLASH '\\'
+#else
+#define SEP ':'
+#define SLASH '/'
+#endif
+
+std::map<std::string, int> Engines_Container_i::_cntInstances_map;
+std::map<std::string, void *> Engines_Container_i::_library_map;
+std::map<std::string, void *> Engines_Container_i::_toRemove_map;
omni_mutex Engines_Container_i::_numInstanceMutex ;
+static PyObject* _pyCont;
+
+int checkifexecutable(const std::string&);
+int findpathof(const std::string& path, std::string&, const std::string&);
+
+/*! \class Engines_Container_i
+ * \brief C++ implementation of Engines::Container interface
+ *
+ */
+
+
//=============================================================================
/*!
- * Default constructor, not for use
- */
+* Default constructor, not for use
+*/
//=============================================================================
Engines_Container_i::Engines_Container_i () :
- _numInstance(0)
+_numInstance(0),_id(0),_NS(0)
{
}
//=============================================================================
/*!
- * Construtor to use
- */
+* Construtor to use
+*/
//=============================================================================
Engines_Container_i::Engines_Container_i (CORBA::ORB_ptr orb,
- PortableServer::POA_ptr poa,
- char *containerName ,
+ PortableServer::POA_ptr poa,
+ char *containerName ,
int argc , char* argv[],
- bool activAndRegist,
- bool isServantAloneInProcess
- ) :
- _numInstance(0),_isServantAloneInProcess(isServantAloneInProcess)
+ bool activAndRegist,
+ bool isServantAloneInProcess
+ ) :
+ _numInstance(0),_isServantAloneInProcess(isServantAloneInProcess),_id(0),_NS(0)
{
_pid = (long)getpid();
_argc = argc ;
_argv = argv ;
- string hostname = GetHostname();
- MESSAGE(hostname << " " << getpid() << " Engines_Container_i starting argc "
- << _argc << " Thread " << pthread_self() ) ;
+ std::string hostname = Kernel_Utils::GetHostname();
+#ifndef WIN32
+ MESSAGE(hostname << " " << getpid() <<
+ " Engines_Container_i starting argc " <<
+ _argc << " Thread " << pthread_self() ) ;
+#else
+ MESSAGE(hostname << " " << _getpid() <<
+ " Engines_Container_i starting argc " << _argc<< " Thread " << pthread_self().p ) ;
+#endif
int i = 0 ;
while ( _argv[ i ] )
- {
- MESSAGE(" argv" << i << " " << _argv[ i ]) ;
- i++ ;
- }
+ {
+ MESSAGE(" argv" << i << " " << _argv[ i ]) ;
+ i++ ;
+ }
if ( argc < 2 )
- {
- INFOS("SALOME_Container usage : SALOME_Container ServerName");
- ASSERT(0) ;
- }
+ {
+ INFOS("SALOME_Container usage : SALOME_Container ServerName");
+ ASSERT(0) ;
+ }
SCRUTE(argv[1]);
_isSupervContainer = false;
- if (strcmp(argv[1],"SuperVisionContainer") == 0) _isSupervContainer = true;
-
- if (_isSupervContainer)
- {
- _ArgC = argc ;
- _ArgV = argv ;
- }
_orb = CORBA::ORB::_duplicate(orb) ;
_poa = PortableServer::POA::_duplicate(poa) ;
-
+
// 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();
- _NS->init_orb( CORBA::ORB::_duplicate(_orb) ) ;
- CORBA::Object_var obj=_poa->id_to_reference(*_id);
- Engines::Container_var pCont
- = Engines::Container::_narrow(obj);
-
- _containerName = _NS->BuildContainerNameForNS(containerName,
- hostname.c_str());
- SCRUTE(_containerName);
- _NS->Register(pCont, _containerName.c_str());
- MESSAGE("Engines_Container_i::Engines_Container_i : Container name "
- << _containerName);
-
- // Python:
- // import SALOME_Container
- // pycont = SALOME_Container.SALOME_Container_i(containerIORStr)
-
- CORBA::String_var sior = _orb->object_to_string(pCont);
- string myCommand="pyCont = SALOME_Container.SALOME_Container_i('";
- myCommand += _containerName + "','";
- myCommand += sior;
- myCommand += "')\n";
- SCRUTE(myCommand);
-
- if (!_isSupervContainer)
- {
- Py_ACQUIRE_NEW_THREAD;
-#ifdef WNT
- // mpv: this is temporary solution: there is a unregular crash if not
- Sleep(2000);
- PyRun_SimpleString("import sys\n");
- // first element is the path to Registry.dll, but it's wrong
- PyRun_SimpleString("sys.path = sys.path[1:]\n");
+ {
+ _id = _poa->activate_object(this);
+ _NS = new SALOME_NamingService();
+ _NS->init_orb( _orb ) ;
+ CORBA::Object_var obj=_poa->id_to_reference(*_id);
+ Engines::Container_var pCont
+ = Engines::Container::_narrow(obj);
+ _remove_ref();
+
+ _containerName = _NS->BuildContainerNameForNS(containerName,
+ hostname.c_str());
+ SCRUTE(_containerName);
+ _NS->Register(pCont, _containerName.c_str());
+ MESSAGE("Engines_Container_i::Engines_Container_i : Container name "
+ << _containerName);
+
+ // Python:
+ // import SALOME_Container
+ // pycont = SALOME_Container.SALOME_Container_i(containerIORStr)
+
+ CORBA::String_var sior = _orb->object_to_string(pCont);
+ std::string myCommand="pyCont = SALOME_Container.SALOME_Container_i('";
+ myCommand += _containerName + "','";
+ myCommand += sior;
+ myCommand += "')\n";
+ SCRUTE(myCommand);
+
+ PyGILState_STATE gstate = PyGILState_Ensure();
+
+#ifdef WIN32
+ // mpv: this is temporary solution: there is a unregular crash if not
+ //Sleep(2000);
+ //
+ // first element is the path to Registry.dll, but it's wrong
+ PyRun_SimpleString("import sys\n");
+ PyRun_SimpleString("sys.path = sys.path[1:]\n");
#endif
- PyRun_SimpleString("import SALOME_Container\n");
- PyRun_SimpleString((char*)myCommand.c_str());
- Py_RELEASE_NEW_THREAD;
- }
- }
+ PyRun_SimpleString("import SALOME_Container\n");
+ PyRun_SimpleString((char*)myCommand.c_str());
+ PyObject *mainmod = PyImport_AddModule("__main__");
+ PyObject *globals = PyModule_GetDict(mainmod);
+ _pyCont = PyDict_GetItemString(globals, "pyCont");
+
+ PyGILState_Release(gstate);
+
+ fileTransfer_i* aFileTransfer = new fileTransfer_i();
+ CORBA::Object_var obref=aFileTransfer->_this();
+ _fileTransfer = Engines::fileTransfer::_narrow(obref);
+ aFileTransfer->_remove_ref();
+ }
}
//=============================================================================
/*!
- * Destructor
- */
+* Destructor
+*/
//=============================================================================
Engines_Container_i::~Engines_Container_i()
{
MESSAGE("Container_i::~Container_i()");
- delete _id;
+ if(_id)
+ delete _id;
+ if(_NS)
+ delete _NS;
}
//=============================================================================
+//! Get container name
/*!
- * CORBA attribute: Container name (see constructor)
- */
+* CORBA attribute: Container name (see constructor)
+*/
//=============================================================================
char* Engines_Container_i::name()
{
- return CORBA::string_dup(_containerName.c_str()) ;
+ return CORBA::string_dup(_containerName.c_str()) ;
}
//=============================================================================
+//! Get container working directory
/*!
- * CORBA method: Get the hostName of the Container (without domain extensions)
- */
+* CORBA attribute: Container working directory
+*/
+//=============================================================================
+
+char* Engines_Container_i::workingdir()
+{
+ char wd[256];
+ getcwd (wd,256);
+ return CORBA::string_dup(wd) ;
+}
+
+//=============================================================================
+//! Get container log file name
+/*!
+* CORBA attribute: Container log file name
+*/
+//=============================================================================
+
+char* Engines_Container_i::logfilename()
+{
+ return CORBA::string_dup(_logfilename.c_str()) ;
+}
+
+//! Set container log file name
+void Engines_Container_i::logfilename(const char* name)
+{
+ _logfilename=name;
+}
+
+//=============================================================================
+//! Get container host name
+/*!
+* CORBA method: Get the hostName of the Container (without domain extensions)
+*/
//=============================================================================
char* Engines_Container_i::getHostName()
{
- string s = GetHostname();
+ std::string s = Kernel_Utils::GetHostname();
// MESSAGE("Engines_Container_i::getHostName " << s);
return CORBA::string_dup(s.c_str()) ;
}
//=============================================================================
+//! Get container PID
/*!
- * CORBA method: Get the PID (process identification) of the Container
- */
+* CORBA method: Get the PID (process identification) of the Container
+*/
//=============================================================================
CORBA::Long Engines_Container_i::getPID()
}
//=============================================================================
+//! Ping the servant to check it is still alive
/*!
- * CORBA method: check if servant is still alive
- */
+* CORBA method: check if servant is still alive
+*/
//=============================================================================
-
void Engines_Container_i::ping()
{
MESSAGE("Engines_Container_i::ping() pid "<< getpid());
}
//=============================================================================
+//! Shutdown the container
/*!
- * CORBA method, oneway: Server shutdown.
- * - Container name removed from naming service,
- * - servant deactivation,
- * - orb shutdown if no other servants in the process
- */
+* CORBA method, oneway: Server shutdown.
+* - Container name removed from naming service,
+* - servant deactivation,
+* - orb shutdown if no other servants in the process
+*/
//=============================================================================
-
void Engines_Container_i::Shutdown()
{
MESSAGE("Engines_Container_i::Shutdown()");
+
+ /* For each component contained in this container
+ * tell it to self-destroy
+ */
+ std::map<std::string, Engines::EngineComponent_var>::iterator itm;
+ for (itm = _listInstances_map.begin(); itm != _listInstances_map.end(); itm++)
+ {
+ try
+ {
+ itm->second->destroy();
+ }
+ catch(const CORBA::Exception& e)
+ {
+ // ignore this entry and continue
+ }
+ catch(...)
+ {
+ // ignore this entry and continue
+ }
+ }
+ _listInstances_map.clear();
+
_NS->Destroy_FullDirectory(_containerName.c_str());
- //_remove_ref();
- //_poa->deactivate_object(*_id);
+ _NS->Destroy_Name(_containerName.c_str());
if(_isServantAloneInProcess)
- {
- MESSAGE("Effective Shutdown of container Begins...");
- LocalTraceBufferPool* bp1 = LocalTraceBufferPool::instance();
- bp1->deleteInstance(bp1);
+ {
+ MESSAGE("Effective Shutdown of container Begins...");
+ if(!CORBA::is_nil(_orb))
_orb->shutdown(0);
- }
+ }
}
-
//=============================================================================
+//! load a component implementation
/*!
- * CORBA method: load a new component class (Python or C++ implementation)
- * \param componentName like COMPONENT
- * try to make a Python import of COMPONENT,
- * then a lib open of libCOMPONENTEngine.so
- * \return true if dlopen successfull or already done, false otherwise
- */
+* CORBA method
+* \param componentName component name
+* \param reason explains error when load fails
+* \return true if dlopen successfull or already done, false otherwise
+*/
//=============================================================================
-
bool
-Engines_Container_i::load_component_Library(const char* componentName)
+Engines_Container_i::load_component_Library(const char* componentName, CORBA::String_out reason)
{
- string aCompName = componentName;
+ //=================================================================
+ // --- C++ implementation section
+ //=================================================================
+ std::string retso;
+ if(load_component_CppImplementation(componentName,retso))
+ {
+ reason=CORBA::string_dup("");
+ return true;
+ }
+ else if(retso != "ImplementationNotFound")
+ {
+ reason=CORBA::string_dup(retso.c_str());
+ return false;
+ }
- // --- try dlopen C++ component
+ retso="Component ";
+ retso+=componentName;
+ retso+=": Can't find C++ implementation ";
+ retso+=std::string(LIB) + componentName + ENGINESO;
-#ifndef WNT
- string impl_name = string ("lib") + aCompName + string("Engine.so");
-#else
- string impl_name = aCompName + string("Engine.dll");
-#endif
- SCRUTE(impl_name);
+ //=================================================================
+ // --- Python implementation section
+ //=================================================================
+ std::string retpy;
+ if(load_component_PythonImplementation(componentName,retpy))
+ {
+ reason=CORBA::string_dup("");
+ return true;
+ }
+ else if(retpy != "ImplementationNotFound")
+ {
+ reason=CORBA::string_dup(retpy.c_str());
+ return false;
+ }
- _numInstanceMutex.lock(); // lock to be alone
+ retpy="Component ";
+ retpy+=componentName;
+ retpy+=": Can't find python implementation ";
+ retpy+=componentName;
+ retpy+="(.py)";
+
+ //=================================================================
+ // -- Executable implementation section
+ //=================================================================
+ std::string retex;
+ if(load_component_ExecutableImplementation(componentName,retex))
+ {
+ reason=CORBA::string_dup("");
+ return true;
+ }
+ else if(retex != "ImplementationNotFound")
+ {
+ reason=CORBA::string_dup(retex.c_str());
+ return false;
+ }
+
+ retex="Component ";
+ retex+=componentName;
+ retex+=": Can't find executable implementation ";
+ retex+=componentName;
+ retex+=".exe";
+
+ std::string ret="Component implementation not found: ";
+ ret += componentName ;
+ ret += '\n' ;
+ ret += retso+ '\n' ;
+ ret += retpy+ '\n' ;
+ ret += retex+ '\n' ;
+
+ std::cerr << ret << std::endl;
+ reason=CORBA::string_dup(ret.c_str());
+
+ return false;
+}
+
+//=============================================================================
+//! try to load a C++ component implementation
+/*!
+* C++ method:
+* \param componentName the name of the component (COMPONENT, for example)
+* \param reason explains error when load fails
+* \return true if loading is successfull or already done, false otherwise
+*/
+//=============================================================================
+bool
+Engines_Container_i::load_component_CppImplementation(const char* componentName, std::string& reason)
+{
+ std::string aCompName(componentName);
+ std::string impl_name = std::string(LIB) + aCompName + ENGINESO;
+ SCRUTE(impl_name);
+
+ _numInstanceMutex.lock(); // lock to be alone
// (see decInstanceCnt, finalize_removal))
- if (_toRemove_map[impl_name]) _toRemove_map.erase(impl_name);
- if (_library_map[impl_name])
+ 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;
}
-
+ _numInstanceMutex.unlock();
+
+#ifndef WIN32
void* handle;
-#ifndef WNT
- handle = dlopen( impl_name.c_str() , RTLD_LAZY ) ;
+ handle = dlopen( impl_name.c_str() , RTLD_NOW ) ;
+ if ( !handle )
+ {
+ //not loadable. Try to find the lib file in LD_LIBRARY_PATH
+ std::string path;
+ char* p=getenv("LD_LIBRARY_PATH");
+ if(p)path=p;
+ path=path+SEP+"/usr/lib"+SEP+"/lib";
+
+ std::string pth;
+ if(findpathof(path, pth, impl_name))
+ {
+ //found but not loadable
+ reason="Component ";
+ reason+=aCompName;
+ reason+=": C++ implementation found ";
+ reason+=pth;
+ reason+=" but it is not loadable. Error:\n";
+ reason+=dlerror();
+ std::cerr << reason << std::endl;
+ return false;
+ }
+ else
+ {
+ //not found
+ //continue with other implementation
+ reason="ImplementationNotFound";
+ return false;
+ }
+ }
#else
- handle = dlopen( impl_name.c_str() , 0 ) ;
+ HINSTANCE handle;
+ handle = LoadLibrary( impl_name.c_str() );
+ if ( !handle )
+ {
+ reason="ImplementationNotFound";
+ }
#endif
+
if ( handle )
{
+ _numInstanceMutex.lock();
_library_map[impl_name] = handle;
_numInstanceMutex.unlock();
+ reason="";
return true;
}
- else
+
+ return false;
+
+}
+//=============================================================================
+//! try to load a Python component implementation
+/*!
+* C++ method:
+* \param componentName name of the component
+* \param reason explains error when load fails
+* \return true if loading is successfull or already done, false otherwise
+*/
+//=============================================================================
+bool
+Engines_Container_i::load_component_PythonImplementation(const char* componentName, std::string& reason)
+{
+ std::string aCompName(componentName);
+
+ _numInstanceMutex.lock() ; // lock to be alone (stl container write)
+ if (_library_map.count(aCompName) != 0)
{
- INFOS("Can't load shared library : " << impl_name);
- INFOS("error dlopen: " << dlerror());
+ _numInstanceMutex.unlock() ;
+ reason="";
+ return true; // Python Component, already imported
}
- _numInstanceMutex.unlock();
+ _numInstanceMutex.unlock() ;
+
+ PyGILState_STATE gstate = PyGILState_Ensure();
+ PyObject *result = PyObject_CallMethod(_pyCont,
+ (char*)"import_component",
+ (char*)"s",componentName);
- // --- try import Python component
+ reason=PyString_AsString(result);
+ Py_XDECREF(result);
+ SCRUTE(reason);
+ PyGILState_Release(gstate);
- INFOS("try import Python component "<<componentName);
- if (_isSupervContainer)
+ if (reason=="")
{
- INFOS("Supervision Container does not support Python Component Engines");
- return false;
+ //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;
}
- if (_library_map[aCompName])
+ else if(reason=="ImplementationNotFound")
{
- return true; // Python Component, already imported
+ //Python implementation has not been found. Continue with other implementation
+ reason="ImplementationNotFound";
}
else
{
- Py_ACQUIRE_NEW_THREAD;
- PyObject *mainmod = PyImport_AddModule("__main__");
- PyObject *globals = PyModule_GetDict(mainmod);
- PyObject *pyCont = PyDict_GetItemString(globals, "pyCont");
- PyObject *result = PyObject_CallMethod(pyCont,
- "import_component",
- "s",componentName);
- int ret= PyInt_AsLong(result);
- SCRUTE(ret);
- Py_RELEASE_NEW_THREAD;
-
- if (ret) // import possible: Python component
- {
- _library_map[aCompName] = (void *)pyCont; // any non O value OK
- MESSAGE("import Python: "<<aCompName<<" OK");
- return true;
- }
+ //Python implementation has been found but loading has failed
+ std::cerr << reason << std::endl;
}
return false;
-}
+}
//=============================================================================
+//! try to load a Executable component implementation
/*!
- * CORBA method: Creates a new servant instance of a component.
- * 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
- */
+* C++ method:
+* \param componentName name of the component
+* \param reason explains error when load fails
+* \return true if loading is successfull or already done, false otherwise
+*/
//=============================================================================
+bool
+Engines_Container_i::load_component_ExecutableImplementation(const char* componentName, std::string& reason)
+{
+ std::string aCompName(componentName);
+ std::string executable=aCompName+".exe";
+
+ std::string path;
+ std::string pth;
-Engines::Component_ptr
+ char* p=getenv("PATH");
+ if(p)path=p;
+
+ if (findpathof(path, pth, executable))
+ {
+ 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;
+ }
+ else
+ {
+ reason="ImplementationNotFound";
+ }
+ return false;
+}
+
+//=============================================================================
+//! Create a new component instance
+/*!
+* CORBA method: Creates a new servant instance of a component.
+* 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)
+ CORBA::Long studyId)
+{
+ Engines::FieldsDict_var env = new Engines::FieldsDict;
+ char* reason;
+ Engines::EngineComponent_ptr compo =
+ create_component_instance_env(genericRegisterName, studyId, env, reason);
+ CORBA::string_free(reason);
+ return compo;
+}
+
+//=============================================================================
+//! Create a new component instance with environment variables specified
+/*!
+* CORBA method: Creates a new servant instance of a component.
+* 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
+*/
+//=============================================================================
+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");
- return Engines::Component::_nil() ;
+ reason=CORBA::string_dup("studyId must be > 0 for mono study instance, =0 for multiStudy");
+ return Engines::EngineComponent::_nil() ;
}
- Engines::Component_var iobject = Engines::Component::_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;
+ }
- string aCompName = genericRegisterName;
- if (_library_map[aCompName]) // Python component
+ std::string impl_name = std::string(LIB) + genericRegisterName + ENGINESO;
+ if (_library_map.count(impl_name) != 0)
{
- if (_isSupervContainer)
- {
- INFOS("Supervision Container does not support Python Component Engines");
- return Engines::Component::_nil();
- }
- _numInstanceMutex.lock() ; // lock on the instance number
- _numInstance++ ;
- int numInstance = _numInstance ;
- _numInstanceMutex.unlock() ;
+ // 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;
+ }
- char aNumI[12];
- sprintf( aNumI , "%d" , numInstance ) ;
- string instanceName = aCompName + "_inst_" + aNumI ;
- string component_registerName =
- _containerName + "/" + instanceName;
-
- Py_ACQUIRE_NEW_THREAD;
- PyObject *mainmod = PyImport_AddModule("__main__");
- PyObject *globals = PyModule_GetDict(mainmod);
- PyObject *pyCont = PyDict_GetItemString(globals, "pyCont");
- PyObject *result = PyObject_CallMethod(pyCont,
- "create_component_instance",
- "ssl",
- aCompName.c_str(),
- instanceName.c_str(),
- studyId);
- string iors = PyString_AsString(result);
- SCRUTE(iors);
- Py_RELEASE_NEW_THREAD;
-
- CORBA::Object_var obj = _orb->string_to_object(iors.c_str());
- iobject = Engines::Component::_narrow( obj ) ;
- return iobject._retn();
+ 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;
}
-
- //--- try C++
-#ifndef WNT
- string impl_name = string ("lib") + genericRegisterName +string("Engine.so");
+ error="load_component_Library has probably not been called for component: ";
+ error += genericRegisterName;
+ INFOS(error);
+ reason=CORBA::string_dup(error.c_str());
+ return Engines::EngineComponent::_nil() ;
+}
+
+//=============================================================================
+//! 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
+*
+* This component is implemented in an executable with name genericRegisterName.exe
+* It must register itself in Naming Service. The container waits some time (10 s max)
+* it's registration.
+*/
+//=============================================================================
+Engines::EngineComponent_ptr
+Engines_Container_i::createExecutableInstance(std::string CompName, int studyId,
+ const Engines::FieldsDict& env,
+ std::string& reason)
+{
+ Engines::EngineComponent_var iobject = Engines::EngineComponent::_nil() ;
+
+ _numInstanceMutex.lock() ; // lock on the instance number
+ _numInstance++ ;
+ int numInstance = _numInstance ;
+ _numInstanceMutex.unlock() ;
+
+ char aNumI[12];
+ sprintf( aNumI , "%d" , numInstance ) ;
+ std::string instanceName = CompName + "_inst_" + aNumI ;
+ std::string component_registerName = _containerName + "/" + instanceName;
+
+ //check if an entry exist in naming service
+ CORBA::Object_var nsobj = _NS->Resolve(component_registerName.c_str());
+ if ( !CORBA::is_nil(nsobj) )
+ {
+ // unregister the registered component
+ _NS->Destroy_Name(component_registerName.c_str());
+ //kill or shutdown it ???
+ }
+
+ // first arg container ior string
+ // second arg container name
+ // third arg instance name
+
+ Engines::Container_var pCont= _this();
+ CORBA::String_var sior = _orb->object_to_string(pCont);
+
+ std::string command;
+ command="mkdir -p ";
+ command+=instanceName;
+ command+=";cd ";
+ command+=instanceName;
+ command+=";";
+ command+=CompName ;
+ command+=".exe";
+ command+=" ";
+ command+= sior; // container ior string
+ command+=" ";
+ command+=_containerName; //container name
+ command+=" ";
+ command+=instanceName; //instance name
+ command+=" &";
+ MESSAGE("SALOME_Container::create_component_instance command=" << command);
+
+#ifndef WIN32
+ // use fork/execl instead of system to get finer control on env variables
+ int status;
+ pid_t pid = fork();
+ if(pid == 0) // child
+ {
+ 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;
+ }
+ else if(pid < 0) // failed to fork
+ {
+ status=-1;
+ }
+ else //parent
+ {
+ pid_t tpid;
+ do
+ {
+ tpid = wait(&status);
+ } while (tpid != pid);
+ }
+#else
+ // launch component with a system call
+ int status=system(command.c_str());
+#endif
+
+ if (status == -1)
+ {
+ reason="SALOME_Container::create_component_instance system failed (system command status -1)";
+ MESSAGE(reason);
+ return Engines::EngineComponent::_nil();
+ }
+#ifndef WIN32
+ else if (WEXITSTATUS(status) == 217)
+ {
+ reason="SALOME_Container::create_component_instance system failed (system command status 217)";
+ MESSAGE(reason);
+ return Engines::EngineComponent::_nil();
+ }
+#endif
+ else
+ {
+ int count=20;
+ CORBA::Object_var obj = CORBA::Object::_nil() ;
+ while ( CORBA::is_nil(obj) && count )
+ {
+#ifndef WIN32
+ sleep( 1 ) ;
#else
- string impl_name = genericRegisterName +string("Engine.dll");
+ Sleep(1000);
#endif
- void* handle = _library_map[impl_name];
- if ( !handle )
+ count-- ;
+ MESSAGE( count << ". Waiting for component " << CompName);
+ obj = _NS->Resolve(component_registerName.c_str());
+ }
+
+ if(CORBA::is_nil(obj))
{
- INFOS("shared library " << impl_name <<"must be loaded before instance");
- return Engines::Component::_nil() ;
+ reason="SALOME_Container::create_component_instance failed";
+ MESSAGE(reason);
+ return Engines::EngineComponent::_nil();
}
- else
+ else
{
- iobject = createInstance(genericRegisterName,
- handle,
- studyId);
+ MESSAGE("SALOME_Container::create_component_instance successful");
+ iobject = Engines::EngineComponent::_narrow(obj);
+ _listInstances_map[instanceName] = iobject;
return iobject._retn();
}
+ }
}
+
//=============================================================================
+//! Create a new component instance (Python implementation)
/*!
- * 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
- */
+* \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::Component_ptr
-Engines_Container_i::find_component_instance( const char* registeredName,
- CORBA::Long studyId)
+Engines::EngineComponent_ptr
+Engines_Container_i::createPythonInstance(std::string CompName, int studyId,
+ std::string& reason)
{
- Engines::Component_var anEngine = Engines::Component::_nil();
- map<string,Engines::Component_var>::iterator itm =_listInstances_map.begin();
- while (itm != _listInstances_map.end())
+ Engines::EngineComponent_var iobject = Engines::EngineComponent::_nil() ;
+
+ _numInstanceMutex.lock() ; // lock on the instance number
+ _numInstance++ ;
+ int numInstance = _numInstance ;
+ _numInstanceMutex.unlock() ;
+
+ char aNumI[12];
+ sprintf( aNumI , "%d" , numInstance ) ;
+ std::string instanceName = CompName + "_inst_" + aNumI ;
+ std::string component_registerName = _containerName + "/" + instanceName;
+
+ PyGILState_STATE gstate = PyGILState_Ensure();
+ PyObject *result = PyObject_CallMethod(_pyCont,
+ (char*)"create_component_instance",
+ (char*)"ssl",
+ CompName.c_str(),
+ instanceName.c_str(),
+ studyId);
+ const char *ior;
+ const char *error;
+ PyArg_ParseTuple(result,"ss", &ior, &error);
+ std::string iors = ior;
+ reason=error;
+ Py_DECREF(result);
+ PyGILState_Release(gstate);
+
+ if( iors!="" )
{
- string instance = (*itm).first;
- SCRUTE(instance);
- if (instance.find(registeredName) == 0)
- {
- anEngine = (*itm).second;
- if (studyId == anEngine->getStudyId())
- {
- return anEngine._retn();
- }
- }
- itm++;
+ CORBA::Object_var obj = _orb->string_to_object(iors.c_str());
+ iobject = Engines::EngineComponent::_narrow( obj ) ;
+ _listInstances_map[instanceName] = iobject;
}
- return anEngine._retn();
+ return iobject._retn();
}
//=============================================================================
+//! Create a new component instance (C++ implementation)
/*!
- * CORBA method: find or create an instance of the component (servant),
- * load a new component class (dynamic library) if required,
- * ---- FOR COMPATIBILITY WITH 2.2 ----
- * ---- USE ONLY FOR MULTISTUDY INSTANCES ! --------
- * The servant registers itself to naming service and Registry.
- * \param genericRegisterName Name of the component to register
- * in Registry & Name Service
- * \param componentName Name of the constructed library of the component
- * \return a loaded component
- */
+* C++ method: create a servant instance of a component.
+* \param genericRegisterName Name of the component instance to register
+* 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
+*
+* example with names:
+* - aGenRegisterName = COMPONENT (= first argument)
+* - _containerName = /Containers/cli76ce/FactoryServer
+* - factoryName = COMPONENTEngine_factory
+* - component_registerBase = /Containers/cli76ce/FactoryServer/COMPONENT
+* - instanceName = COMPONENT_inst_1
+* - component_registerName = /Containers/cli76ce/FactoryServer/COMPONENT_inst_1
+*/
//=============================================================================
-
-Engines::Component_ptr
-Engines_Container_i::load_impl( const char* genericRegisterName,
- const char* componentName )
+Engines::EngineComponent_ptr
+Engines_Container_i::createInstance(std::string genericRegisterName,
+ void *handle,
+ int studyId,
+ std::string& reason)
{
- string impl_name = string ("lib") + genericRegisterName +string("Engine.so");
- Engines::Component_var iobject = Engines::Component::_nil() ;
- if (load_component_Library(genericRegisterName))
- iobject = find_or_create_instance(genericRegisterName, impl_name);
+ // --- find the factory
+
+ std::string aGenRegisterName = genericRegisterName;
+ std::string factory_name = aGenRegisterName + std::string("Engine_factory");
+ SCRUTE(factory_name) ;
+
+ typedef PortableServer::ObjectId* (*FACTORY_FUNCTION) (CORBA::ORB_ptr,
+ PortableServer::POA_ptr,
+ PortableServer::ObjectId *,
+ const char *,
+ const char *) ;
+
+#ifndef WIN32
+ FACTORY_FUNCTION Component_factory = (FACTORY_FUNCTION)dlsym( handle, factory_name.c_str() );
+#else
+ FACTORY_FUNCTION Component_factory = (FACTORY_FUNCTION)GetProcAddress( (HINSTANCE)handle, factory_name.c_str() );
+#endif
+
+ if ( !Component_factory )
+ {
+ INFOS( "Can't resolve symbol: " + factory_name );
+#ifndef WIN32
+ reason=dlerror();
+ INFOS(reason);
+#endif
+ return Engines::EngineComponent::_nil() ;
+ }
+
+ // --- create instance
+
+ Engines::EngineComponent_var iobject = Engines::EngineComponent::_nil() ;
+
+ try
+ {
+ _numInstanceMutex.lock() ; // lock on the instance number
+ _numInstance++ ;
+ int numInstance = _numInstance ;
+ _numInstanceMutex.unlock() ;
+
+ char aNumI[12];
+ sprintf( aNumI , "%d" , numInstance ) ;
+ std::string instanceName = aGenRegisterName + "_inst_" + aNumI ;
+ std::string component_registerName =
+ _containerName + "/" + instanceName;
+
+ // --- Instanciate required CORBA object
+
+ PortableServer::ObjectId *id ; //not owner, do not delete (nore use var)
+ 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();
+ }
+
+ // --- get reference & servant 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)
+
+ _NS->Register( iobject , component_registerName.c_str() ) ;
+ MESSAGE( component_registerName.c_str() << " bound" ) ;
+ }
+ catch (...)
+ {
+ reason="Container_i::createInstance exception catched";
+ INFOS(reason) ;
+ }
return iobject._retn();
}
-
//=============================================================================
-/*!
- * CORBA method: Stops the component servant, and deletes all related objects
- * \param component_i Component to be removed
- */
+//! Find an existing (in the container) component instance
+/*!
+* 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
+*/
+//=============================================================================
+Engines::EngineComponent_ptr
+Engines_Container_i::find_component_instance( const char* registeredName,
+ CORBA::Long studyId)
+{
+ Engines::EngineComponent_var anEngine = Engines::EngineComponent::_nil();
+ std::map<std::string,Engines::EngineComponent_var>::iterator itm =_listInstances_map.begin();
+ while (itm != _listInstances_map.end())
+ {
+ std::string instance = (*itm).first;
+ SCRUTE(instance);
+ if (instance.find(registeredName) == 0)
+ {
+ anEngine = (*itm).second;
+ if (studyId == anEngine->getStudyId())
+ {
+ return anEngine._retn();
+ }
+ }
+ itm++;
+ }
+ return anEngine._retn();
+}
+
+//=============================================================================
+//! Remove the component instance from container
+/*!
+* CORBA method: Stops the component servant, and deletes all related objects
+* \param component_i Component to be removed
+*/
//=============================================================================
-void Engines_Container_i::remove_impl(Engines::Component_ptr component_i)
+void Engines_Container_i::remove_impl(Engines::EngineComponent_ptr component_i)
{
ASSERT(! CORBA::is_nil(component_i));
- string instanceName = component_i->instanceName() ;
+ std::string instanceName = component_i->instanceName() ;
MESSAGE("unload component " << instanceName);
+ _numInstanceMutex.lock() ; // lock to be alone (stl container write)
_listInstances_map.erase(instanceName);
+ _numInstanceMutex.unlock() ;
component_i->destroy() ;
_NS->Destroy_Name(instanceName.c_str());
}
//=============================================================================
-/*!
- * CORBA method: Discharges unused libraries from the container.
- */
+//! Unload component libraries from the container
+/*!
+* CORBA method: Discharges unused libraries from the container.
+*/
//=============================================================================
-
void Engines_Container_i::finalize_removal()
{
MESSAGE("finalize unload : dlclose");
_numInstanceMutex.lock(); // lock to be alone
- // (see decInstanceCnt, load_component_Library)
- map<string, void *>::iterator ith;
+ // (see decInstanceCnt, load_component_Library)
+ std::map<std::string, void *>::iterator ith;
for (ith = _toRemove_map.begin(); ith != _toRemove_map.end(); ith++)
+ {
+ void *handle = (*ith).second;
+ std::string impl_name= (*ith).first;
+ if (handle)
{
- void *handle = (*ith).second;
- string impl_name= (*ith).first;
- if (handle)
- {
- SCRUTE(handle);
- SCRUTE(impl_name);
-// dlclose(handle); // SALOME unstable after ...
-// _library_map.erase(impl_name);
- }
+ SCRUTE(handle);
+ SCRUTE(impl_name);
+ // dlclose(handle); // SALOME unstable after ...
+ // _library_map.erase(impl_name);
}
+ }
_toRemove_map.clear();
_numInstanceMutex.unlock();
}
//=============================================================================
-/*!
- * CORBA method: Kill the container process with exit(0).
- * To remove : never returns !
- */
+//! Decrement component instance reference count
+/*!
+*
+*/
//=============================================================================
-
-bool Engines_Container_i::Kill_impl()
+void Engines_Container_i::decInstanceCnt(std::string genericRegisterName)
{
- MESSAGE("Engines_Container_i::Kill() pid "<< getpid() << " containerName "
- << _containerName.c_str() << " machineName "
- << GetHostname().c_str());
- INFOS("===============================================================");
- INFOS("= REMOVE calls to Kill_impl in C++ container =");
- INFOS("===============================================================");
- //exit( 0 ) ;
- ASSERT(0);
- return false;
+ if(_cntInstances_map.count(genericRegisterName)==0)
+ return;
+ std::string aGenRegisterName =genericRegisterName;
+ MESSAGE("Engines_Container_i::decInstanceCnt " << aGenRegisterName);
+ ASSERT(_cntInstances_map[aGenRegisterName] > 0);
+ _numInstanceMutex.lock(); // lock to be alone
+ // (see finalize_removal, load_component_Library)
+ _cntInstances_map[aGenRegisterName] -= 1;
+ SCRUTE(_cntInstances_map[aGenRegisterName]);
+ if (_cntInstances_map[aGenRegisterName] == 0)
+ {
+ std::string impl_name =
+ Engines_Component_i::GetDynLibraryName(aGenRegisterName.c_str());
+ SCRUTE(impl_name);
+ void* handle = _library_map[impl_name];
+ ASSERT(handle);
+ _toRemove_map[impl_name] = handle;
+ }
+ _numInstanceMutex.unlock();
}
//=============================================================================
-/*!
- * C++ method: Finds an already existing servant instance of a component, or
- * create an instance.
- * ---- USE ONLY FOR MULTISTUDY INSTANCES ! --------
- * \param genericRegisterName Name of the component instance to register
- * in Registry & Name Service,
- * (without _inst_n suffix, like "COMPONENT")
- * \param componentLibraryName like "libCOMPONENTEngine.so"
- * \return a loaded component
- *
- * example with names:
- * aGenRegisterName = COMPONENT (= first argument)
- * impl_name = libCOMPONENTEngine.so (= second argument)
- * _containerName = /Containers/cli76ce/FactoryServer
- * factoryName = COMPONENTEngine_factory
- * component_registerBase = /Containers/cli76ce/FactoryServer/COMPONENT
- *
- * instanceName = COMPONENT_inst_1
- * component_registerName = /Containers/cli76ce/FactoryServer/COMPONENT_inst_1
- */
+//! Find or create a new component instance
+/*!
+* CORBA method: find or create an instance of the component (servant),
+* load a new component class (dynamic library) if required,
+*
+* ---- FOR COMPATIBILITY WITH 2.2 ----
+*
+* ---- USE ONLY FOR MULTISTUDY INSTANCES ! --------
+*
+* The servant registers itself to naming service and Registry.
+* \param genericRegisterName Name of the component to register
+* in Registry & Name Service
+* \param componentName Name of the constructed library of the component
+* \return a loaded component
+*/
//=============================================================================
-Engines::Component_ptr
-Engines_Container_i::find_or_create_instance(string genericRegisterName,
- string componentLibraryName)
+Engines::EngineComponent_ptr
+Engines_Container_i::load_impl( const char* genericRegisterName,
+ const char* componentName )
{
- string aGenRegisterName = genericRegisterName;
- string impl_name = componentLibraryName;
- void* handle = _library_map[impl_name];
- if ( !handle )
- {
- INFOS("shared library " << impl_name <<"must be loaded before instance");
- return Engines::Component::_nil() ;
- }
- else
- {
- // --- find a registered instance in naming service, or create
-
- string component_registerBase =
- _containerName + "/" + aGenRegisterName;
- Engines::Component_var iobject = Engines::Component::_nil() ;
- try
- {
- CORBA::Object_var obj =
- _NS->ResolveFirst( component_registerBase.c_str());
- if ( CORBA::is_nil( obj ) )
- {
- iobject = createInstance(genericRegisterName,
- handle,
- 0); // force multiStudy instance here !
- }
- else
- {
- iobject = Engines::Component::_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::Component::_nil();
- INFOS("load_impl & find_component_instance methods "
- << "NOT SUITABLE for mono study components");
- }
- }
- }
- catch (...)
- {
- INFOS( "Container_i::load_impl catched" ) ;
- }
- return iobject._retn();
- }
+ char* reason;
+ std::string impl_name = std::string(LIB) + genericRegisterName + ENGINESO;
+ Engines::EngineComponent_var iobject = Engines::EngineComponent::_nil() ;
+ if (load_component_Library(genericRegisterName,reason))
+ iobject = find_or_create_instance(genericRegisterName, impl_name);
+ CORBA::string_free(reason);
+ return iobject._retn();
}
//=============================================================================
-/*!
- * C++ method: create a servant instance of a component.
- * \param genericRegisterName Name of the component instance to register
- * 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
- * \return a loaded component
- *
- * example with names:
- * aGenRegisterName = COMPONENT (= first argument)
- * _containerName = /Containers/cli76ce/FactoryServer
- * factoryName = COMPONENTEngine_factory
- * component_registerBase = /Containers/cli76ce/FactoryServer/COMPONENT
- * instanceName = COMPONENT_inst_1
- * component_registerName = /Containers/cli76ce/FactoryServer/COMPONENT_inst_1
- */
+//! Finds an already existing component instance or create a new instance
+/*!
+* C++ method: Finds an already existing servant instance of a component, or
+* create an instance.
+* ---- USE ONLY FOR MULTISTUDY INSTANCES ! --------
+* \param genericRegisterName Name of the component instance to register
+* in Registry & Name Service,
+* (without _inst_n suffix, like "COMPONENT")
+* \param componentLibraryName like "libCOMPONENTEngine.so"
+* \return a loaded component
+*
+* example with names:
+* - aGenRegisterName = COMPONENT (= first argument)
+* - impl_name = libCOMPONENTEngine.so (= second argument)
+* - _containerName = /Containers/cli76ce/FactoryServer
+* - factoryName = COMPONENTEngine_factory
+* - component_registerBase = /Containers/cli76ce/FactoryServer/COMPONENT
+* - instanceName = COMPONENT_inst_1
+* - component_registerName = /Containers/cli76ce/FactoryServer/COMPONENT_inst_1
+*/
//=============================================================================
-Engines::Component_ptr
-Engines_Container_i::createInstance(string genericRegisterName,
- void *handle,
- int studyId)
+Engines::EngineComponent_ptr
+Engines_Container_i::find_or_create_instance(std::string genericRegisterName,
+ std::string componentLibraryName)
{
- // --- find the factory
-
- string aGenRegisterName = genericRegisterName;
- string factory_name = aGenRegisterName + string("Engine_factory");
- SCRUTE(factory_name) ;
-
- typedef PortableServer::ObjectId * (*FACTORY_FUNCTION)
- (CORBA::ORB_ptr,
- PortableServer::POA_ptr,
- PortableServer::ObjectId *,
- const char *,
- const char *) ;
-
- FACTORY_FUNCTION Component_factory
- = (FACTORY_FUNCTION) dlsym(handle, factory_name.c_str());
-
- char *error ;
- if ( (error = dlerror() ) != NULL)
- {
- INFOS("Can't resolve symbol: " + factory_name);
- SCRUTE(error);
- return Engines::Component::_nil() ;
- }
-
- // --- create instance
-
- Engines::Component_var iobject = Engines::Component::_nil() ;
-
- try
- {
- _numInstanceMutex.lock() ; // lock on the instance number
- _numInstance++ ;
- int numInstance = _numInstance ;
- _numInstanceMutex.unlock() ;
-
- char aNumI[12];
- sprintf( aNumI , "%d" , numInstance ) ;
- string instanceName = aGenRegisterName + "_inst_" + aNumI ;
- string component_registerName =
- _containerName + "/" + instanceName;
-
- // --- Instanciate required CORBA object
-
- PortableServer::ObjectId *id ; //not owner, do not delete (nore use var)
- id = (Component_factory) ( _orb, _poa, _id, instanceName.c_str(),
- aGenRegisterName.c_str() ) ;
-
- // --- get reference & servant from id
-
- CORBA::Object_var obj = _poa->id_to_reference(*id);
- iobject = Engines::Component::_narrow( obj ) ;
-
- Engines_Component_i *servant =
- dynamic_cast<Engines_Component_i*>(_poa->reference_to_servant(iobject));
- ASSERT(servant);
- //SCRUTE(servant->pd_refCount);
- servant->_remove_ref(); // compensate previous id_to_reference
- //SCRUTE(servant->pd_refCount);
- _listInstances_map[instanceName] = iobject;
- _cntInstances_map[aGenRegisterName] += 1;
- SCRUTE(aGenRegisterName);
- SCRUTE(_cntInstances_map[aGenRegisterName]);
- //SCRUTE(servant->pd_refCount);
- bool ret_studyId = servant->setStudyId(studyId);
- ASSERT(ret_studyId);
-
- // --- register the engine under the name
- // containerName(.dir)/instanceName(.object)
-
- _NS->Register( iobject , component_registerName.c_str() ) ;
- MESSAGE( component_registerName.c_str() << " bound" ) ;
- }
- catch (...)
+ std::string aGenRegisterName = genericRegisterName;
+ std::string impl_name = componentLibraryName;
+ if (_library_map.count(impl_name) == 0)
+ {
+ INFOS("shared library " << impl_name <<" must be loaded before creating instance");
+ return Engines::EngineComponent::_nil() ;
+ }
+ else
+ {
+ // --- find a registered instance in naming service, or create
+
+ void* handle = _library_map[impl_name];
+ std::string component_registerBase =
+ _containerName + "/" + aGenRegisterName;
+ Engines::EngineComponent_var iobject = Engines::EngineComponent::_nil() ;
+ std::string reason;
+ try
{
- INFOS( "Container_i::createInstance exception catched" ) ;
+ CORBA::Object_var obj =
+ _NS->ResolveFirst( component_registerBase.c_str());
+ if ( CORBA::is_nil( obj ) )
+ {
+ iobject = createInstance(genericRegisterName,
+ handle,
+ 0,
+ reason); // force multiStudy instance here !
+ }
+ 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");
+ }
+ }
}
- return iobject._retn();
-}
-
-//=============================================================================
-/*!
- *
- */
-//=============================================================================
-
-void Engines_Container_i::decInstanceCnt(string genericRegisterName)
-{
- string aGenRegisterName =genericRegisterName;
- MESSAGE("Engines_Container_i::decInstanceCnt " << aGenRegisterName);
- ASSERT(_cntInstances_map[aGenRegisterName] > 0);
- _numInstanceMutex.lock(); // lock to be alone
- // (see finalize_removal, load_component_Library)
- _cntInstances_map[aGenRegisterName] -= 1;
- SCRUTE(_cntInstances_map[aGenRegisterName]);
- if (_cntInstances_map[aGenRegisterName] == 0)
+ catch (...)
{
- string impl_name =
- Engines_Component_i::GetDynLibraryName(aGenRegisterName.c_str());
- SCRUTE(impl_name);
- void* handle = _library_map[impl_name];
- ASSERT(handle);
- _toRemove_map[impl_name] = handle;
+ INFOS( "Container_i::load_impl catched" ) ;
}
- _numInstanceMutex.unlock();
+ return iobject._retn();
+ }
}
//=============================================================================
+//! Indicate if container is a python one
/*!
- * Retrieves only with container naming convention if it is a python container
- */
+* Retrieves only with container naming convention if it is a python container
+*/
//=============================================================================
-
bool Engines_Container_i::isPythonContainer(const char* ContainerName)
{
bool ret=false;
}
//=============================================================================
-/*!
- *
- */
+//! Kill the container
+/*!
+* CORBA method: Kill the container process with exit(0).
+* To remove : never returns !
+*/
//=============================================================================
+bool Engines_Container_i::Kill_impl()
+{
+ MESSAGE("Engines_Container_i::Kill() pid "<< getpid() << " containerName "
+ << _containerName.c_str() << " machineName "
+ << Kernel_Utils::GetHostname().c_str());
+ INFOS("===============================================================");
+ INFOS("= REMOVE calls to Kill_impl in C++ container =");
+ INFOS("===============================================================");
+ //_exit( 0 ) ;
+ ASSERT(0);
+ return false;
+}
+//=============================================================================
+/*!
+*
+*/
+//=============================================================================
void ActSigIntHandler()
{
-#ifndef WNT
+#ifndef WIN32
struct sigaction SigIntAct ;
SigIntAct.sa_sigaction = &SigIntHandler ;
+ sigemptyset(&SigIntAct.sa_mask);
SigIntAct.sa_flags = SA_SIGINFO ;
#endif
-// DEBUG 03.02.2005 : the first parameter of sigaction is not a mask of signals
-// (SIGINT | SIGUSR1) :
-// it must be only one signal ===> one call for SIGINT
-// and an other one for SIGUSR1
+ // DEBUG 03.02.2005 : the first parameter of sigaction is not a mask of signals
+ // (SIGINT | SIGUSR1) :
+ // it must be only one signal ===> one call for SIGINT
+ // and an other one for SIGUSR1
-#ifndef WNT
+#ifndef WIN32
if ( sigaction( SIGINT , &SigIntAct, NULL ) )
- {
- perror("SALOME_Container main ") ;
- exit(0) ;
- }
+ {
+ perror("SALOME_Container main ") ;
+ exit(0) ;
+ }
if ( sigaction( SIGUSR1 , &SigIntAct, NULL ) )
- {
- perror("SALOME_Container main ") ;
- exit(0) ;
- }
+ {
+ perror("SALOME_Container main ") ;
+ exit(0) ;
+ }
+ if ( sigaction( SIGUSR2 , &SigIntAct, NULL ) )
+ {
+ perror("SALOME_Container main ") ;
+ exit(0) ;
+ }
//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 :
}
void SetCpuUsed() ;
+void CallCancelThread() ;
-#ifndef WNT
+#ifndef WIN32
void SigIntHandler(int what ,
- siginfo_t * siginfo ,
- void * toto )
+ siginfo_t * siginfo ,
+ 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 :
// A stream operation may be interrupted by a signal and if the Handler use stream we
// may have a "Dead-Lock" ===HangUp
//==MESSAGE is commented
- // MESSAGE(pthread_self() << "SigIntHandler what " << what << endl
- // << " si_signo " << siginfo->si_signo << endl
- // << " si_code " << siginfo->si_code << endl
+ // MESSAGE(pthread_self() << "SigIntHandler what " << what << std::endl
+ // << " si_signo " << siginfo->si_signo << std::endl
+ // << " si_code " << siginfo->si_code << std::endl
// << " si_pid " << siginfo->si_pid) ;
if ( _Sleeping )
+ {
+ _Sleeping = false ;
+ // MESSAGE("SigIntHandler END sleeping.") ;
+ return ;
+ }
+ else
+ {
+ ActSigIntHandler() ;
+ if ( siginfo->si_signo == SIGUSR1 )
{
- _Sleeping = false ;
- // MESSAGE("SigIntHandler END sleeping.") ;
- return ;
+ SetCpuUsed() ;
}
- else
+ else if ( siginfo->si_signo == SIGUSR2 )
+ {
+ CallCancelThread() ;
+ }
+ else
{
- ActSigIntHandler() ;
- if ( siginfo->si_signo == SIGUSR1 )
- {
- SetCpuUsed() ;
- }
- else
- {
- _Sleeping = true ;
- // MESSAGE("SigIntHandler BEGIN sleeping.") ;
- int count = 0 ;
- while( _Sleeping )
- {
- sleep( 1 ) ;
- count += 1 ;
- }
- // MESSAGE("SigIntHandler LEAVE sleeping after " << count << " s.") ;
- }
- return ;
- }
-}
-#else // Case WNT
+ _Sleeping = true ;
+ // MESSAGE("SigIntHandler BEGIN sleeping.") ;
+ int count = 0 ;
+ while( _Sleeping )
+ {
+ sleep( 1 ) ;
+ count += 1 ;
+ }
+ // MESSAGE("SigIntHandler LEAVE sleeping after " << count << " s.") ;
+ }
+ return ;
+ }
+}
+#else // Case WIN32
void SigIntHandler( int what )
{
- MESSAGE( pthread_self() << "SigIntHandler what " << what << endl );
+#ifndef WIN32
+ MESSAGE( pthread_self() << "SigIntHandler what " << what << std::endl );
+#else
+ MESSAGE( "SigIntHandler what " << what << std::endl );
+#endif
if ( _Sleeping )
+ {
+ _Sleeping = false ;
+ MESSAGE("SigIntHandler END sleeping.") ;
+ return ;
+ }
+ else
+ {
+ ActSigIntHandler() ;
+ if ( what == SIGUSR1 )
+ {
+ SetCpuUsed() ;
+ }
+ else
{
- _Sleeping = false ;
- MESSAGE("SigIntHandler END sleeping.") ;
- return ;
+ _Sleeping = true ;
+ MESSAGE("SigIntHandler BEGIN sleeping.") ;
+ int count = 0 ;
+ while( _Sleeping )
+ {
+ Sleep( 1000 ) ;
+ count += 1 ;
+ }
+ MESSAGE("SigIntHandler LEAVE sleeping after " << count << " s.") ;
+ }
+ return ;
+ }
+}
+#endif
+
+//=============================================================================
+//! Get or create a file reference object associated to a local file (to transfer it)
+/*!
+* CORBA method: get or create a fileRef object associated to a local file
+* (a file on the computer on which runs the container server), which stores
+* a list of (machine, localFileName) corresponding to copies already done.
+*
+* \param origFileName absolute path for a local file to copy on other
+* computers
+* \return a fileRef object associated to the file.
+*/
+//=============================================================================
+Engines::fileRef_ptr
+Engines_Container_i::createFileRef(const char* origFileName)
+{
+ std::string origName(origFileName);
+ Engines::fileRef_var theFileRef = Engines::fileRef::_nil();
+
+ if (origName[0] != '/')
+ {
+ INFOS("path of file to copy must be an absolute path begining with '/'");
+ return Engines::fileRef::_nil();
+ }
+
+ if (CORBA::is_nil(_fileRef_map[origName]))
+ {
+ CORBA::Object_var obj=_poa->id_to_reference(*_id);
+ Engines::Container_var pCont = Engines::Container::_narrow(obj);
+ fileRef_i* aFileRef = new fileRef_i(pCont, origFileName);
+ theFileRef = Engines::fileRef::_narrow(aFileRef->_this());
+ _numInstanceMutex.lock() ; // lock to be alone (stl container write)
+ _fileRef_map[origName] = theFileRef;
+ _numInstanceMutex.unlock() ;
+ }
+
+ theFileRef = Engines::fileRef::_duplicate(_fileRef_map[origName]);
+ ASSERT(! CORBA::is_nil(theFileRef));
+ return theFileRef._retn();
+}
+
+//=============================================================================
+//! Get a fileTransfer reference
+/*!
+* CORBA method:
+* \return a reference to the fileTransfer object
+*/
+//=============================================================================
+Engines::fileTransfer_ptr
+Engines_Container_i::getFileTransfer()
+{
+ Engines::fileTransfer_var aFileTransfer
+ = Engines::fileTransfer::_duplicate(_fileTransfer);
+ return aFileTransfer._retn();
+}
+
+//=============================================================================
+//! Create a Salome file
+//=============================================================================
+Engines::Salome_file_ptr
+Engines_Container_i::createSalome_file(const char* origFileName)
+{
+ std::string origName(origFileName);
+ if (CORBA::is_nil(_Salome_file_map[origName]))
+ {
+ Salome_file_i* aSalome_file = new Salome_file_i();
+ aSalome_file->setContainer(Engines::Container::_duplicate(this->_this()));
+ try
+ {
+ aSalome_file->setLocalFile(origFileName);
+ aSalome_file->recvFiles();
+ }
+ catch (const SALOME::SALOME_Exception& e)
+ {
+ return Engines::Salome_file::_nil();
+ }
+
+ Engines::Salome_file_var theSalome_file = Engines::Salome_file::_nil();
+ theSalome_file = Engines::Salome_file::_narrow(aSalome_file->_this());
+ _numInstanceMutex.lock() ; // lock to be alone (stl container write)
+ _Salome_file_map[origName] = theSalome_file;
+ _numInstanceMutex.unlock() ;
+ }
+
+ Engines::Salome_file_ptr theSalome_file =
+ Engines::Salome_file::_duplicate(_Salome_file_map[origName]);
+ ASSERT(!CORBA::is_nil(theSalome_file));
+ return theSalome_file;
+}
+
+//=============================================================================
+/*! \brief copy a file from a remote host (container) to the local host
+ * \param container the remote container
+ * \param remoteFile the file to copy locally from the remote host into localFile
+ * \param localFile the local file
+ */
+//=============================================================================
+void Engines_Container_i::copyFile(Engines::Container_ptr container, const char* remoteFile, const char* localFile)
+{
+ Engines::fileTransfer_var fileTransfer = container->getFileTransfer();
+
+ FILE* fp;
+ if ((fp = fopen(localFile,"wb")) == NULL)
+ {
+ 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)
+ {
+ 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
{
- ActSigIntHandler() ;
- if ( what == SIGUSR1 )
- {
- SetCpuUsed() ;
- }
- else
- {
- _Sleeping = true ;
- MESSAGE("SigIntHandler BEGIN sleeping.") ;
- int count = 0 ;
- while( _Sleeping )
- {
- Sleep( 1000 ) ;
- count += 1 ;
- }
- MESSAGE("SigIntHandler LEAVE sleeping after " << count << " s.") ;
- }
- return ;
+ INFOS("open reference file for copy impossible");
}
}
+
+//=============================================================================
+/*! \brief create a PyNode object to execute remote python code
+ * \param nodeName the name of the node
+ * \param code the python code to load
+ * \return the PyNode
+ */
+//=============================================================================
+Engines::PyNode_ptr Engines_Container_i::createPyNode(const char* nodeName, const char* code)
+{
+ 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_Release(gstate);
+
+ if(ierr==0)
+ {
+ CORBA::Object_var obj = _orb->string_to_object(astr.c_str());
+ node = Engines::PyNode::_narrow(obj);
+ return node._retn();
+ }
+ else
+ {
+ SALOME::ExceptionStruct es;
+ es.type = SALOME::INTERNAL_ERROR;
+ es.text = astr.c_str();
+ throw SALOME::SALOME_Exception(es);
+ }
+
+}
+
+//=============================================================================
+/*! \brief create a PyScriptNode object to execute remote python code
+ * \param nodeName the name of the node
+ * \param code the python code to load
+ * \return the PyScriptNode
+ */
+//=============================================================================
+Engines::PyScriptNode_ptr Engines_Container_i::createPyScriptNode(const char* nodeName, const char* code)
+{
+ 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_Release(gstate);
+
+ if(ierr==0)
+ {
+ CORBA::Object_var obj = _orb->string_to_object(astr.c_str());
+ node = Engines::PyScriptNode::_narrow(obj);
+ return node._retn();
+ }
+ else
+ {
+ SALOME::ExceptionStruct es;
+ es.type = SALOME::INTERNAL_ERROR;
+ es.text = astr.c_str();
+ throw SALOME::SALOME_Exception(es);
+ }
+}
+
+//=============================================================================
+/* int checkifexecutable(const char *filename)
+*
+* Return non-zero if the name is an executable file, and
+* zero if it is not executable, or if it does not exist.
+*/
+//=============================================================================
+int checkifexecutable(const std::string& filename)
+{
+ int result;
+ struct stat statinfo;
+
+ result = stat(filename.c_str(), &statinfo);
+ if (result < 0) return 0;
+ if (!S_ISREG(statinfo.st_mode)) return 0;
+
+#ifdef WIN32
+ return 1;
+#else
+ if (statinfo.st_uid == geteuid()) return statinfo.st_mode & S_IXUSR;
+ if (statinfo.st_gid == getegid()) return statinfo.st_mode & S_IXGRP;
+ return statinfo.st_mode & S_IXOTH;
#endif
+}
+
+//=============================================================================
+/*! \brief Find a file by searching in a path
+ * \param filename file name to search
+ * \param path path to search in
+ * \param pth the complete file path if found
+ * \return 1 if found 0 if not
+*/
+//=============================================================================
+int findpathof(const std::string& path, std::string& pth, const std::string& filename)
+{
+ if ( path.size() == 0 ) return 0;
+
+ std::string::size_type offset = 0;
+ std::string::size_type pos = 0;
+ int found = 0;
+ struct stat statinfo;
+
+ while(!found)
+ {
+ pos = path.find( SEP, offset );
+ pth = path.substr( offset, pos - offset );
+ if ( pth.size() > 0 )
+ {
+ if( pth[pth.size()-1] != SLASH ) pth += SLASH;
+ pth += filename;
+ int result=stat(pth.c_str(), &statinfo);
+ if(result == 0) found=1;
+ }
+ if (pos == std::string::npos) break;
+ offset = pos+1;
+ }
+ return found;
+}
