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Limit number of seen events #34

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17 changes: 17 additions & 0 deletions k4Gen/src/components/GenEventFilter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,23 @@ StatusCode GenEventFilter::initialize() {

StatusCode GenEventFilter::execute(const EventContext& evtCtx) const {
const edm4hep::MCParticleCollection* inParticles = m_inColl.get();

if (m_nEventsSeen == m_nEventsSeenMax) {
debug() << "Maximum number of " << m_nEventsSeenMax.value()
<< " seen events reached!" << endmsg;

StatusCode sc = m_eventProcessor->stopRun();
if (sc.isFailure()) {
error() << "Error when attempting to stop event processing! Aborting..."
<< endmsg;
return sc;
}

m_incidentSvc->fireIncident(Incident(name(), IncidentType::AbortEvent));

return StatusCode::SUCCESS;
}

m_nEventsSeen++;

if (!(*m_filterRulePtr)(inParticles)) {
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8 changes: 8 additions & 0 deletions k4Gen/src/components/GenEventFilter.h
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Original file line number Diff line number Diff line change
@@ -1,6 +1,9 @@
#ifndef GENERATION_GENEVENTFILTER_H
#define GENERATION_GENEVENTFILTER_H

// std
#include <limits>

// Gaudi
#include "GaudiKernel/Algorithm.h"
class IProperty;
Expand Down Expand Up @@ -48,6 +51,11 @@ class GenEventFilter : public Gaudi::Algorithm {
Gaudi::Property<std::string> m_filterRulePath{
this, "filterRulePath", "", "Path to the filter rule file"};

/// Maximum number of events seen
Gaudi::Property<unsigned int> m_nEventsSeenMax{
this, "nEventsSeenMax", std::numeric_limits<unsigned int>::max(),
"Limit the number of events seen"};

/// Targeted number of events.
mutable std::atomic<unsigned int> m_nEventsTarget;
/// Keep track of how many events were already accepted.
Expand Down