GeneratorWorker.h

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/*
 *  CepGen: a central exclusive processes event generator
 *  Copyright (C) 2020-2024  Laurent Forthomme
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef CepGen_Core_GeneratorWorker_h
#define CepGen_Core_GeneratorWorker_h
 
#include "CepGen/Event/Event.h"
 
namespace cepgen {
  class Integrator;
  class RunParameters;
  class ProcessIntegrand;
  namespace proc {
    class Process;
  }
  class GeneratorWorker : public SteeredObject<GeneratorWorker> {
  public:
    explicit GeneratorWorker(const ParametersList&);  
    virtual ~GeneratorWorker();
 
    static ParametersDescription description();
 
    void setRunParameters(const RunParameters*);  
    void setIntegrator(const Integrator* integ);  
 
    void generate(size_t num_events, const std::function<void(const proc::Process&)>&);
 
    inline ProcessIntegrand& integrand() { return *integrand_; }  
 
    virtual void initialise() = 0;  
    virtual bool next() = 0;        
 
  protected:
    bool storeEvent();
 
    // NOT owned
    const Integrator* integrator_{nullptr};  
    const RunParameters* params_{nullptr};   
 
    std::unique_ptr<ProcessIntegrand> integrand_;                       
    std::function<void(const proc::Process&)> callback_proc_{nullptr};  
  };
}  // namespace cepgen
 
#endif