IOBoundAlgTask.cpp

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#include <functional>

// Framework
#include "GaudiKernel/Algorithm.h"
#include "GaudiKernel/IMessageSvc.h"
#include "GaudiKernel/IProperty.h"
#include "GaudiKernel/ContextSpecificPtr.h"
#include "IOBoundAlgTask.h"

// local includes
#include "RetCodeGuard.h"

StatusCode IOBoundAlgTask::execute() {

  IAlgorithm *ialg = m_algorithm.get();
  Algorithm* this_algo = dynamic_cast<Algorithm*>(ialg);  
  if (!this_algo){
    throw GaudiException ("Cast to Algorithm failed!","AlgoExecutionTask",
                          StatusCode::FAILURE);
  }

  bool eventfailed=false;
  this_algo->setContext(m_evtCtx);
  Gaudi::Hive::setCurrentContext( m_evtCtx );

  m_schedSvc->addAlg(this_algo, m_evtCtx, pthread_self());

  // Get the IProperty interface of the ApplicationMgr to pass it to RetCodeGuard
  const SmartIF<IProperty> appmgr(m_serviceLocator);

  SmartIF<IMessageSvc> messageSvc (m_serviceLocator);
  MsgStream log(messageSvc, "AccelAlgoExecutionTask");

  StatusCode sc(StatusCode::FAILURE);
  try {
    RetCodeGuard rcg(appmgr, Gaudi::ReturnCode::UnhandledException);
    log << MSG::DEBUG << "Starting execution of algorithm " << m_algorithm->name() 
        << endmsg;
    sc = m_algorithm->sysExecute();
    if (UNLIKELY(!sc.isSuccess()))  {
      log << MSG::WARNING << "Execution of algorithm " 
          << m_algorithm->name() << " failed" << endmsg;
      eventfailed = true;
    }
    log << MSG::DEBUG << "Stopped execution of algorithm "  << m_algorithm->name() 
        << endmsg;
    rcg.ignore(); // disarm the guard
  } catch ( const GaudiException& Exception ) {
    log << MSG::FATAL << ".executeEvent(): Exception with tag=" << Exception.tag()
            << " thrown by " << m_algorithm->name() << endmsg;
    log << MSG::ERROR << Exception << endmsg;
    eventfailed = true;
  } catch ( const std::exception& Exception ) {
    log << MSG::FATAL << ".executeEvent(): Standard std::exception thrown by "
            << m_algorithm->name() << endmsg;
    log << MSG::ERROR <<  Exception.what()  << endmsg;
    eventfailed = true;
  } catch(...) {
    log << MSG::FATAL << ".executeEvent(): UNKNOWN Exception thrown by "
            << m_algorithm->name() << endmsg;
    eventfailed = true;
  }

  // Commit all DataHandles
  this_algo->commitHandles();

  // DP it is important to propagate the failure of an event.
  // We need to stop execution when this happens so that execute run can
  // then receive the FAILURE
  m_aess->algExecState(ialg,*m_evtCtx).setExecuted(true);
  m_aess->algExecState(ialg,*m_evtCtx).setExecStatus(sc);
  m_aess->updateEventStatus(eventfailed,*m_evtCtx);


  // Push in the scheduler queue an action to be performed
  auto action_promote2Executed = std::bind(&ForwardSchedulerSvc::promoteToAsyncExecuted,
                                           m_schedSvc,
                                           m_algoIndex,
                                           m_evtCtx->slot(),
                                           m_algorithm,
                                           m_evtCtx);

  // TODO Expose a method to push actions in IScheduler?
  m_schedSvc->m_actionsQueue.push(action_promote2Executed);

  m_schedSvc->delAlg(this_algo);

  Gaudi::Hive::setCurrentContextEvt(-1);

  return sc;
}