| # Gaudi Framework, version v21r7p1 |

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# IncidentSvc.cpp

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    00001 // $Id: $
    00002 // ============================================================================
    00003 #ifdef _WIN32
    00004 // ============================================================================
    00005 // Avoid conflicts between windows and the message service.
    00006 // ============================================================================
    00007 #define NOMSG
    00008 #define NOGDI
    00009 #endif
    00010 // ============================================================================
    00011 // Include Files
    00012 // ============================================================================
    00013 #include "GaudiKernel/MsgStream.h"
    00014 #include "GaudiKernel/ISvcLocator.h"
    00015 #include "GaudiKernel/SmartIF.h"
    00016 #include "GaudiKernel/IIncidentListener.h"
    00017 #include "GaudiKernel/Incident.h"
    00018 #include "GaudiKernel/GaudiException.h"
    00019 #include "GaudiKernel/LockedChrono.h"
    00020 // ============================================================================
    00021 // Local
    00022 // ============================================================================
    00023 #include "IncidentSvc.h"
    00024 // ============================================================================
    00025 // Instantiation of a static factory class used by clients to create
    00026 //  instances of this service
    00027 DECLARE_SERVICE_FACTORY(IncidentSvc)
    00028 // ============================================================================
    00029 namespace
    00030 {
    00031   // ==========================================================================
    00032   static const std::string s_unknown = "<unknown>" ;
    00033   // Helper to get the name of the listener
    00034   inline const std::string& getListenerName ( IIncidentListener* lis )
    00035   {
    00036     SmartIF<INamedInterface> iNamed(lis);
    00037     return iNamed.isValid() ? iNamed->name() : s_unknown ;
    00038   }
    00039   // ==========================================================================
    00040 }
    00041 // ============================================================================
    00042 // Constructors and Desctructors
    00043 // ============================================================================
    00044 IncidentSvc::IncidentSvc( const std::string& name, ISvcLocator* svc )
    00045   : base_class(name, svc)
    00046   , m_currentIncidentType(0)
    00047   , m_log(msgSvc(), name)
    00048   , m_timer()
    00049   , m_timerLock ( false )
    00050 {}
    00051 // ============================================================================
    00052 IncidentSvc::~IncidentSvc()
    00053 {
    00054   boost::recursive_mutex::scoped_lock lock(m_listenerMapMutex);
    00055
    00056   for (ListenerMap::iterator i = m_listenerMap.begin();
    00057        i != m_listenerMap.end();
    00058        ++i) {
    00059     delete i->second;
    00060   }
    00061 }
    00062 // ============================================================================
    00063 // Inherited Service overrides:
    00064 // ============================================================================
    00065 StatusCode IncidentSvc::initialize()
    00066 {
    00067   // initialize the Service Base class
    00068   StatusCode sc = Service::initialize();
    00069   if ( sc.isFailure() ) {
    00070     return sc;
    00071   }
    00072
    00073   m_log.setLevel(outputLevel());
    00074   m_currentIncidentType = 0;
    00075
    00076   // set my own (IncidentSvc) properties via the jobOptionService
    00077   sc = setProperties();
    00078   if ( sc.isFailure() )
    00079   {
    00080     m_log << MSG::ERROR << "Could not set my properties" << endmsg;
    00081     return sc;
    00082   }
    00083
    00084   return StatusCode::SUCCESS;
    00085 }
    00086 // ============================================================================
    00087 StatusCode IncidentSvc::finalize()
    00088 {
    00089   m_log
    00090     << MSG::DEBUG
    00091     << m_timer.outputUserTime
    00092     ( "Incident  timing: Mean(+-rms)/Min/Max:%3%(+-%4%)/%6%/%7%[ms] " , System::milliSec )
    00093     << m_timer.outputUserTime ( "Total:%2%[s]" , System::Sec ) << endmsg ;
    00094
    00095   // Finalize this specific service
    00096   StatusCode sc = Service::finalize();
    00097   if ( sc.isFailure() ) { return sc; }
    00098
    00099   return StatusCode::SUCCESS;
    00100 }
    00101 // ============================================================================
    00102 // Inherited IIncidentSvc overrides:
    00103 // ============================================================================
    00104 void IncidentSvc::addListener
    00105 ( IIncidentListener* lis ,
    00106   const std::string& type ,
    00107   long prio, bool rethrow, bool singleShot)
    00108 {
    00109
    00110   boost::recursive_mutex::scoped_lock lock(m_listenerMapMutex);
    00111
    00112   std::string ltype;
    00113   if( type == "" ) ltype = "ALL";
    00114   else             ltype = type;
    00115   // find if the type already exists
    00116   ListenerMap::iterator itMap = m_listenerMap.find( ltype );
    00117   if( itMap == m_listenerMap.end() ) {
    00118     // if not found, create and insert now a list of listeners
    00119     ListenerList* newlist = new ListenerList();
    00120     std::pair<ListenerMap::iterator, bool> p;
    00121     p = m_listenerMap.insert(ListenerMap::value_type(ltype, newlist));
    00122     if( p.second ) itMap = p.first;
    00123   }
    00124   ListenerList* llist = (*itMap).second;
    00125   // add Listener in the ListenerList according to the priority
    00126   ListenerList::iterator itlist;
    00127   for( itlist = llist->begin(); itlist != llist->end(); itlist++ ) {
    00128     if( (*itlist).priority < prio ) {
    00129       // We insert before the current position
    00130       break;
    00131     }
    00132   }
    00133
    00134   m_log << MSG::DEBUG << "Adding [" << type << "] listener '" << getListenerName(lis)
    00135         << "' with priority " << prio << endmsg;
    00136
    00137   llist->insert(itlist, Listener(lis, prio, rethrow, singleShot));
    00138 }
    00139 // ============================================================================
    00140 void IncidentSvc::removeListener
    00141 ( IIncidentListener* lis  ,
    00142   const std::string& type )
    00143 {
    00144
    00145   boost::recursive_mutex::scoped_lock lock(m_listenerMapMutex);
    00146
    00147   if( type == "") {
    00148     // remove Listener from all the lists
    00149     ListenerMap::iterator itmap;
    00150     for ( itmap = m_listenerMap.begin(); itmap != m_listenerMap.end();)
    00151     {
    00152       // since the current entry may be eventually deleted
    00153       // we need to keep a memory of the next index before
    00154       // calling recursively this method
    00155       ListenerMap::iterator itmap_old = itmap;
    00156       itmap++;
    00157       removeListener( lis, (*itmap_old).first );
    00158     }
    00159   }
    00160   else {
    00161     ListenerMap::iterator itmap = m_listenerMap.find( type );
    00162
    00163     if( itmap == m_listenerMap.end() ) {
    00164       // if not found the incident type then return
    00165       return;
    00166     }
    00167     else {
    00168       ListenerList* llist = (*itmap).second;
    00169       ListenerList::iterator itlist;
    00170       bool justScheduleForRemoval = ( 0!= m_currentIncidentType )
    00171                                     && (type == *m_currentIncidentType);
    00172       // loop over all the entries in the Listener list
    00173       // to remove all of them than matches
    00174       // the listener address. Remember the next index
    00175       // before erasing the current one
    00176       for( itlist = llist->begin(); itlist != llist->end(); ) {
    00177         if( (*itlist).iListener == lis || lis == 0) {
    00178           if (justScheduleForRemoval) {
    00179             (itlist++)->singleShot = true; // remove it as soon as it is safe
    00180           }
    00181           else {
    00182             m_log << MSG::DEBUG << "Removing [" << type << "] listener '"
    00183                 << getListenerName(lis) << "'" << endmsg;
    00184             itlist = llist->erase(itlist); // remove from the list now
    00185           }
    00186         }
    00187         else {
    00188           itlist++;
    00189         }
    00190       }
    00191       if( llist->size() == 0) {
    00192         delete llist;
    00193         m_listenerMap.erase(itmap);
    00194       }
    00195     }
    00196   }
    00197 }
    00198 // ============================================================================
    00199 namespace {
    00202   struct listenerToBeRemoved{
    00203     inline bool operator() (const IncidentSvc::Listener& l) {
    00204       return l.singleShot;
    00205     }
    00206   };
    00207 }
    00208 // ============================================================================
    00209 void IncidentSvc::i_fireIncident
    00210 ( const Incident&    incident     ,
    00211   const std::string& listenerType )
    00212 {
    00213
    00214   boost::recursive_mutex::scoped_lock lock(m_listenerMapMutex);
    00215
    00216   ListenerMap::iterator itmap = m_listenerMap.find( listenerType );
    00217   if ( m_listenerMap.end() == itmap ) return;
    00218
    00219   // setting this pointer will avoid that a call to removeListener() during
    00220   // the loop triggers a segfault
    00221   m_currentIncidentType = &(incident.type());
    00222
    00223   ListenerList* llist = (*itmap).second;
    00224   ListenerList::iterator itlist;
    00225   bool weHaveToCleanUp = false;
    00226   // loop over all registered Listeners
    00227
    00228   const bool verbose =  MSG::VERBOSE >= outputLevel() ;
    00229
    00230   for( itlist = llist->begin(); itlist != llist->end(); itlist++ )
    00231   {
    00232
    00233     if ( verbose )
    00234     {
    00235       m_log
    00236         << MSG::VERBOSE
    00237         << "Calling '" << getListenerName((*itlist).iListener)
    00238         << "' for incident [" << incident.type() << "]" << endmsg;
    00239     }
    00240
    00241     // handle exceptions if they occur
    00242     try {
    00243       (*itlist).iListener->handle(incident);
    00244     }
    00245     catch( const GaudiException& exc ) {
    00246       m_log << MSG::ERROR << "Exception with tag=" << exc.tag() << " is caught"
    00247           " handling incident" << m_currentIncidentType << endmsg;
    00248       m_log << MSG::ERROR <<  exc  << endmsg;
    00249       if ( (*itlist).rethrow ) { throw (exc); }
    00250     }
    00251     catch( const std::exception& exc ) {
    00252       m_log << MSG::ERROR << "Standard std::exception is caught"
    00253           " handling incident" << m_currentIncidentType << endmsg;
    00254       m_log << MSG::ERROR << exc.what()  << endmsg;
    00255       if ( (*itlist).rethrow ) { throw (exc); }
    00256     }
    00257     catch(...) {
    00258       m_log << MSG::ERROR << "UNKNOWN Exception is caught"
    00259           " handling incident" << m_currentIncidentType << endmsg;
    00260       if ( (*itlist).rethrow ) { throw; }
    00261     }
    00262     // check if at least one of the listeners is a one-shot
    00263     weHaveToCleanUp |= itlist->singleShot;
    00264   }
    00265   if (weHaveToCleanUp) {
    00266     // remove all the listeners that need to be removed from the list
    00267     llist->remove_if( listenerToBeRemoved() );
    00268     // if the list is empty, we can remove it
    00269     if( llist->size() == 0) {
    00270       delete llist;
    00271       m_listenerMap.erase(itmap);
    00272     }
    00273   }
    00274
    00275   m_currentIncidentType = 0;
    00276 }
    00277 // ============================================================================
    00278 void IncidentSvc::fireIncident( const Incident& incident )
    00279 {
    00280
    00281   Gaudi::Utils::LockedChrono timer ( m_timer , m_timerLock ) ;
    00282
    00283   // Call specific listeners
    00284   i_fireIncident(incident, incident.type());
    00285   // Try listeners registered for ALL incidents
    00286   if ( incident.type() != "ALL" ){ // avoid double calls if somebody fires the incident "ALL"
    00287     i_fireIncident(incident, "ALL");
    00288   }
    00289 }
    00290 // ============================================================================
    00291 // The END
    00292 // ============================================================================