| # Gaudi Framework, version v21r7 |

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# AlgorithmManager.cpp

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    00001 // $Id: AlgorithmManager.cpp,v 1.11 2008/10/20 20:58:10 marcocle Exp $
    00002
    00003 // Include files
    00004 #include "AlgorithmManager.h"
    00005 #include "GaudiKernel/IAlgorithm.h"
    00006 #include "GaudiKernel/ISvcLocator.h"
    00007 #include "GaudiKernel/AlgFactory.h"
    00008 #include "GaudiKernel/System.h"
    00009 #include "GaudiKernel/MsgStream.h"
    00010 #include "GaudiKernel/TypeNameString.h"
    00011 #include <iostream>
    00012 #ifndef _WIN32
    00013 #include <errno.h>
    00014 #endif
    00015
    00017 static SmartIF<IAlgorithm> no_algorithm;
    00018
    00019 using ROOT::Reflex::PluginService;
    00020
    00021 // constructor
    00022 AlgorithmManager::AlgorithmManager(IInterface* application):
    00023   base_class(application, IAlgorithm::interfaceID())
    00024 {
    00025   addRef(); // Initial count set to 1
    00026 }
    00027
    00028 // destructor
    00029 AlgorithmManager::~AlgorithmManager() {
    00030 }
    00031
    00032 // addAlgorithm
    00033 StatusCode AlgorithmManager::addAlgorithm(IAlgorithm* alg) {
    00034   m_listalg.push_back(alg);
    00035   return StatusCode::SUCCESS;
    00036 }
    00037
    00038 // removeAlgorithm
    00039 StatusCode AlgorithmManager::removeAlgorithm(IAlgorithm* alg) {
    00040   ListAlg::iterator it = std::find(m_listalg.begin(), m_listalg.end(), alg);
    00041   if (it != m_listalg.end()) {
    00042     m_listalg.erase(it);
    00043     return StatusCode::SUCCESS;
    00044   }
    00045   return StatusCode::FAILURE;
    00046 }
    00047
    00048 // createService
    00049 StatusCode AlgorithmManager::createAlgorithm( const std::string& algtype,
    00050                                               const std::string& algname,
    00051                                               IAlgorithm*& algorithm,
    00052                                               bool managed)
    00053 {
    00054   // Check is the algorithm is already existing
    00055   if( existsAlgorithm( algname ) ) {
    00056     // return an error because an algorithm with that name already exists
    00057     return StatusCode::FAILURE;
    00058   }
    00059   algorithm = PluginService::Create<IAlgorithm*>(algtype, algname, serviceLocator().get());
    00060   if ( !algorithm ) {
    00061     algorithm = PluginService::CreateWithId<IAlgorithm*>(algtype, algname, serviceLocator().get());
    00062   }
    00063   if ( algorithm ) {
    00064     // Check the compatibility of the version of the interface obtained
    00065     if( !isValidInterface(algorithm) ) {
    00066       fatal() << "Incompatible interface IAlgorithm version for " << algtype << endmsg;
    00067       return StatusCode::FAILURE;
    00068     }
    00069     StatusCode rc;
    00070     m_listalg.push_back(AlgorithmItem(algorithm, managed));
    00071     // this is needed to keep the reference count correct, since isValidInterface(algorithm)
    00072     // implies an increment of the counter by 1
    00073     algorithm->release();
    00074     if ( managed ) {
    00075       // Bring the created algorithm to the same state of the ApplicationMgr
    00076       if (FSMState() >= Gaudi::StateMachine::INITIALIZED) {
    00077         rc = algorithm->sysInitialize();
    00078         if (rc.isSuccess() && FSMState() >= Gaudi::StateMachine::RUNNING) {
    00079           rc = algorithm->sysStart();
    00080         }
    00081       }
    00082       if ( !rc.isSuccess() )  {
    00083         this->error() << "Failed to initialize algorithm: [" << algname << "]" << endmsg;
    00084       }
    00085     }
    00086     return rc;
    00087   }
    00088   this->error() << "Algorithm of type " << algtype
    00089                 << " is unknown (No factory available)." << endmsg;
    00090 #ifndef _WIN32
    00091   errno = 0xAFFEDEAD; // code used by Gaudi for library load errors: forces getLastErrorString do use dlerror (on Linux)
    00092 #endif
    00093   std::string err = System::getLastErrorString();
    00094   if (! err.empty()) {
    00095     this->error() << err << endmsg;
    00096   }
    00097   this->error() << "More information may be available by setting the global jobOpt \"ReflexPluginDebugLevel\" to 1" << endmsg;
    00098
    00099   return StatusCode::FAILURE;
    00100 }
    00101
    00102 SmartIF<IAlgorithm>& AlgorithmManager::algorithm(const Gaudi::Utils::TypeNameString &typeName, const bool createIf) {
    00103   ListAlg::iterator it = std::find(m_listalg.begin(), m_listalg.end(), typeName.name());
    00104   if (it != m_listalg.end()) { // found
    00105     return it->algorithm;
    00106   }
    00107   if (createIf) {
    00108     IAlgorithm* alg;
    00109     if (createAlgorithm(typeName.type(), typeName.name(), alg, true).isSuccess()) {
    00110       return algorithm(typeName, false);
    00111     }
    00112   }
    00113   return no_algorithm;
    00114 }
    00115
    00116 // existsAlgorithm
    00117 bool AlgorithmManager::existsAlgorithm(const std::string& name) const {
    00118   ListAlg::const_iterator it = std::find(m_listalg.begin(), m_listalg.end(), name);
    00119   return it != m_listalg.end();
    00120 }
    00121
    00122   // Return the list of Algorithms
    00123 const std::list<IAlgorithm*>& AlgorithmManager::getAlgorithms() const
    00124 {
    00125   m_listOfPtrs.clear();
    00126   for (ListAlg::const_iterator it = m_listalg.begin(); it != m_listalg.end(); ++it) {
    00127     m_listOfPtrs.push_back(const_cast<IAlgorithm*>(it->algorithm.get()));
    00128   }
    00129   return m_listOfPtrs;
    00130 }
    00131
    00132 StatusCode AlgorithmManager::initialize() {
    00133   StatusCode rc;
    00134   ListAlg::iterator it;
    00135   for (it = m_listalg.begin(); it != m_listalg.end(); ++it) {
    00136     if (!it->managed) continue;
    00137     rc = it->algorithm->sysInitialize();
    00138     if ( rc.isFailure() ) return rc;
    00139   }
    00140   return rc;
    00141 }
    00142
    00143 StatusCode AlgorithmManager::start() {
    00144   StatusCode rc;
    00145   ListAlg::iterator it;
    00146   for (it = m_listalg.begin(); it != m_listalg.end(); ++it) {
    00147     if (!it->managed) continue;
    00148     rc = it->algorithm->sysStart();
    00149     if ( rc.isFailure() ) return rc;
    00150   }
    00151   return rc;
    00152 }
    00153
    00154 StatusCode AlgorithmManager::stop() {
    00155   StatusCode rc;
    00156   ListAlg::iterator it;
    00157   for (it = m_listalg.begin(); it != m_listalg.end(); ++it) {
    00158     if (!it->managed) continue;
    00159     rc = it->algorithm->sysStop();
    00160     if ( rc.isFailure() ) return rc;
    00161   }
    00162   return rc;
    00163 }
    00164
    00165 StatusCode AlgorithmManager::finalize() {
    00166   StatusCode rc;
    00167   ListAlg::iterator it = m_listalg.begin();
    00168   while (it != m_listalg.end()){ // finalize and remove from the list the managed algorithms
    00169     if (it->managed) {
    00170       rc = it->algorithm->sysFinalize();
    00171       if( rc.isFailure() ) return rc;
    00172       it = m_listalg.erase(it);
    00173     } else {
    00174       ++it;
    00175     }
    00176   }
    00177   return rc;
    00178 }
    00179
    00180 StatusCode AlgorithmManager::reinitialize() {
    00181   StatusCode rc;
    00182   ListAlg::iterator it;
    00183   for (it = m_listalg.begin(); it != m_listalg.end(); ++it) {
    00184     if (!it->managed) continue;
    00185     rc = it->algorithm->sysReinitialize();
    00186     if( rc.isFailure() ){
    00187       this->error() << "Unable to re-initialize algorithm: " << it->algorithm->name() << endmsg;
    00188       return rc;
    00189     }
    00190   }
    00191   return rc;
    00192 }
    00193
    00194 StatusCode AlgorithmManager::restart() {
    00195   StatusCode rc;
    00196   ListAlg::iterator it;
    00197   for (it = m_listalg.begin(); it != m_listalg.end(); ++it) {
    00198     if (!it->managed) continue;
    00199     rc = it->algorithm->sysRestart();
    00200     if( rc.isFailure() ){
    00201       this->error() << "Unable to re-initialize algorithm: " << it->algorithm->name() << endmsg;
    00202       return rc;
    00203     }
    00204   }
    00205   return rc;
    00206 }