core Namespace Reference

Classes
struct	export_table
	Struct containing (macro defined) creation/deletion operations. More...
struct	export_table_postprocess
	Struct containing (macro defined) creation/deletion operations. More...
class	ProcessorDef
	Definition for a dynamically-loaded Processor. More...
class	PostProcessorBase
	A generic tree-reading event-by-event processor. More...
class	ProcessorBase
	A generic tree-writing event-by-event processor. More...
class	ProcessorBlock
	A set of Processors. More...
class	ProviderManager
	Interface to LArSoft services. More...
class	SelectionBase
	Base class for event selections. More...

Functions
export_table *	LoadProcessor (char *libname)
export_table_postprocess *	LoadPostProcessor (char *libname)
fhicl::ParameterSet *	LoadConfig (char *configfile)
const simb::MCParticle *	Genie2G4MCParticle (const simb::MCParticle &genie_part, const simb::MCTruth &mctruth, const std::vector< art::Ptr< simb::MCParticle >> &g4_mcparticles, const std::vector< const sim::GeneratedParticleInfo * > infos)

Detailed Description

Core framework functionality.

A generic processor that writes an sbnanalysis tree.

Author: A. Mastbaum mastb.nosp@m.aum@.nosp@m.uchic.nosp@m.ago..nosp@m.edu, 2018/01/25

Function Documentation

const simb::MCParticle* core::Genie2G4MCParticle	(	const simb::MCParticle &	genie_part,
		const simb::MCTruth &	mctruth,
		const std::vector< art::Ptr< simb::MCParticle >> &	g4_mcparticles,
		const std::vector< const sim::GeneratedParticleInfo * >	infos
	)

Definition at line 318 of file ProcessorBase.cxx.

                                                           {

  const simb::MCParticle *ret = NULL;
  for (int iparticle = 0; iparticle < g4_mcparticles.size(); iparticle++) {
    if (infos[iparticle]->hasGeneratedParticleIndex() &&
        infos[iparticle]->generatedParticleIndex() < mctruth.NParticles() && // TODO: why is this number sometimes bigger than the number of particles?
        mctruth.GetParticle(infos[iparticle]->generatedParticleIndex()).TrackId() == genie_part.TrackId() &&
        g4_mcparticles[iparticle]->Process() == "primary" /* TODO: will have to remove this restriction to include secondary particles*/) {

      // if a genie particle re-scatters in g4 and makes more particles, then multiple g4 particles can match to a 
      // genie particle. Thus, we also check that the start location of the associated genie particle matches the g4
      // and that the pdgid matches (to be on the safe side)
      //
      // Note that this should be accounted for by requiring the process to be primary. This is a bit of redundancy.
      const simb::MCParticle& matched_genie_particle = mctruth.GetParticle(infos[iparticle]->generatedParticleIndex());
      if ((matched_genie_particle.Position().Vect() - g4_mcparticles[iparticle]->Position().Vect()).Mag() < 1e-4 &&
        matched_genie_particle.PdgCode() == g4_mcparticles[iparticle]->PdgCode()) {

        // this should only be true for one particle
        assert(ret == NULL);
        ret = g4_mcparticles[iparticle].get();
      }
    }
  }
  return ret;
}

fhicl::ParameterSet * core::LoadConfig

(

char *

configfile

)

Load configuration from JSON file to object.

Parameters

config

Path to the JSON file

Returns

Configuration as a JSON object

Definition at line 80 of file Loader.cxx.

                                                {
  fhicl::ParameterSet* config = NULL;

  if (configfile) {
    std::cout << "Loading configuration: " << configfile << "... ";
    config = new fhicl::ParameterSet;
    cet::filepath_lookup_nonabsolute maker("FHICL_FILE_PATH");
    fhicl::make_ParameterSet(configfile, maker, *config);
    std::cout << "OK" << std::endl;
  }

  return config;
}

export_table_postprocess * core::LoadPostProcessor

(

char *

libname

)

Load a post-processor from a shared library.

Parameters

libpath

Path to the shared library

Returns

A table of exported hooks for creating/deleting instances

Definition at line 47 of file Loader.cxx.

                                                           {
  std::cout << "Loading post-processor: " << libname << "... ";

  char* libdir = getenv("SBN_LIB_DIR");
  char libpath[1000];
  snprintf(libpath, 1000, "%s/libsbnanalysis_%s.so", libdir, libname);

  void* handle = dlopen(libpath, RTLD_NOW);
  if (!handle) {
    std::cout << "ERROR" << std::endl;
    std::cerr << "Error loading post-processor " << libname << ": \n\n"
              << dlerror()
              << "\n\nSBN_LIB_DIR = " << libdir
              << std::endl;
    exit(1);
  }

  export_table_postprocess* exports = (export_table_postprocess*) dlsym(handle, "exports");

  if (exports) {
    std::cout << "OK" << std::endl;
  }
  else {
    std::cout << "ERROR" << std::endl;
    std::cerr << "Invalid library " << libpath << ". "
              << "Not a PostProcessor?" << std::endl;
    exit(1);
  }

  return exports;
}

export_table * core::LoadProcessor

(

char *

libname

)

Load a processor from a shared library.

Parameters

libpath

Path to the shared library

Returns

A table of exported hooks for creating/deleting instances

Definition at line 15 of file Loader.cxx.

                                           {
  std::cout << "Loading processor: " << libname << "... ";

  char* libdir = getenv("SBN_LIB_DIR");
  char libpath[1000];
  snprintf(libpath, 1000, "%s/libsbnanalysis_%s.so", libdir, libname);

  void* handle = dlopen(libpath, RTLD_NOW);
  if (!handle) {
    std::cout << "ERROR" << std::endl;
    std::cerr << "Error loading processor " << libname << ": \n\n"
              << dlerror()
              << "\n\nSBN_LIB_DIR = " << libdir
              << std::endl;
    exit(1);
  }

  export_table* exports = (export_table*) dlsym(handle, "exports");

  if (exports) {
    std::cout << "OK" << std::endl;
  }
  else {
    std::cout << "ERROR" << std::endl;
    std::cerr << "Invalid library " << libpath << ". "
              << "Not a Processor?" << std::endl;
    exit(1);
  }

  return exports;
}