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Generated: 18 Jul 2008

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# DLLClassManager.cpp

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    00001 // $Id: DLLClassManager.cpp,v 1.17 2007/12/12 16:03:19 marcocle Exp $
    00002
    00003 // Include files
    00004 #include "GaudiKernel/GaudiException.h"
    00005 #include "GaudiKernel/ISvcLocator.h"
    00006 #include "GaudiKernel/IAlgManager.h"
    00007 #include "GaudiKernel/ISvcManager.h"
    00008 #include "GaudiKernel/IIncidentSvc.h"
    00009 #include "GaudiKernel/ModuleIncident.h"
    00010 #include "GaudiKernel/MsgStream.h"
    00011 #include "DLLClassManager.h"
    00012 #include "GaudiKernel/System.h"
    00013
    00014 #include <iostream>
    00015 #include <cassert>
    00016
    00017 // default creator
    00018 DLLClassManager::DLLClassManager( IInterface* iface ) {
    00019   m_pOuter = iface;
    00020   m_pOuter->queryInterface(IID_ISvcLocator, pp_cast<void>(&m_svclocator)).ignore();
    00021   assert( 0 != m_svclocator );
    00022   m_msgsvc     = 0;
    00023 //  m_algmanager = 0;
    00024 //  m_svcmanager = 0;
    00025 //  m_cnvmanager = 0;
    00026 //  m_objmanager = 0;
    00027   m_refcount   = 1;
    00028 }
    00029
    00030 // virtual destructor
    00031 DLLClassManager::~DLLClassManager() {
    00032   if( m_msgsvc ) m_msgsvc->release();
    00033   //if( m_algmanager ) m_algmanager->release();
    00034   //if( m_svcmanager ) m_svcmanager->release();
    00035   //if( m_cnvmanager ) m_cnvmanager->release();
    00036   //if( m_objmanager ) m_objmanager->release();
    00037   if( m_svclocator ) m_svclocator->release();
    00038 }
    00039
    00040 // implementation of IClassManager::loadModule
    00041 StatusCode DLLClassManager::loadModule( const std::string& module,
    00042                                         bool fireIncident ) {
    00043   // Access the message service if not yet done already
    00044   if( m_msgsvc == 0 ) {
    00045     m_svclocator->getService( "MessageSvc", IID_IMessageSvc, *pp_cast<IInterface>(&m_msgsvc) ).ignore();
    00046   }
    00047   MsgStream log(m_msgsvc, "DllClassManager");
    00048
    00049   std::string mod = module=="" ? System::moduleNameFull() : module;
    00050   if( module == "NONE" ) return StatusCode::SUCCESS;
    00051
    00052   void* libHandle = 0;
    00053   StatusCode status = StatusCode::FAILURE;
    00054   try
    00055   {
    00056     status = System::loadDynamicLib( module, &libHandle);
    00057   }
    00058   catch ( const std::exception & excpt )
    00059   {
    00060     if ( m_msgsvc )
    00061     {
    00062       log << MSG::ERROR << "Exception whilst loading " << module << " : " << excpt.what() << endmsg;
    00063     }
    00064     status = StatusCode::FAILURE;
    00065   }
    00066
    00067   if( status.isFailure() ) {
    00068     // DLL library not loaded
    00069     log << MSG::ERROR << "Could not load module " << module << endmsg;
    00070     log << MSG::ERROR << "System Error: " << System::getLastErrorString() << endmsg;
    00071     return StatusCode::FAILURE;
    00072   }
    00073   //FIXME this is a hack to avoid a very early call to moduleLoad from
    00074   //FIXME AppMgr::i_startup
    00075   if (fireIncident && module != "") {
    00076     //now fire ModuleLoadedIncident
    00077     IIncidentSvc* pIncidentSvc(0);
    00078     const bool CREATEIF(true);
    00079     StatusCode sc(m_svclocator->service("IncidentSvc", pIncidentSvc, CREATEIF));
    00080     if( !sc.isSuccess() )  {
    00081       log << MSG::FATAL << "Can not locate IncidentSvc" << endreq;
    00082       throw GaudiException("Error retrieving IncidentSvc",
    00083                            "DLLClassManager::DLLClassManager", sc);
    00084     }
    00085     pIncidentSvc->fireIncident(ModuleLoadedIncident("DLLClassManager",
    00086                                                      module) );
    00087     pIncidentSvc->release();
    00088   }
    00089
    00090   return StatusCode::SUCCESS;
    00091 }
    00092
    00093 // implmentation of IInterface::addRef
    00094 unsigned long DLLClassManager::addRef() {
    00095   m_refcount++;
    00096         return m_refcount;
    00097 }
    00098
    00099 // implmentation of IInterface::release
    00100 unsigned long DLLClassManager::release() {
    00101   unsigned long count = --m_refcount;
    00102   if( count <= 0) {
    00103     delete this;
    00104   }
    00105   return count;
    00106 }
    00107
    00108 // implementation of IInterface::queryInterface
    00109 StatusCode DLLClassManager::queryInterface(const InterfaceID& iid, void** pinterface) {
    00110   if( iid == IID_IInterface ) {
    00111     *pinterface = (IInterface*)this;
    00112     addRef();
    00113     return StatusCode::SUCCESS;
    00114   }
    00115   else if ( iid == IID_IClassManager ) {
    00116     *pinterface = (IClassManager*)this;
    00117     addRef();
    00118     return StatusCode::SUCCESS;
    00119   }
    00120   else {
    00121     return m_pOuter->queryInterface(iid, pinterface);
    00122   }
    00123   return StatusCode::SUCCESS;
    00124 }
    00125
    00126
    00127
    00128