smash::anonymous_namespace{smash.cc} Namespace Reference

Classes
struct	OutputDirectoryExists
struct	OutputDirectoryOutOfIds

Functions
void	print_disclaimer ()
	Print the disclaimer. More...
bf::path	default_output_path ()
void	ensure_path_is_valid (const bf::path &path)
	Ensures the output path is valid. More...
ScatterActionsFinder	actions_finder_for_dump (Configuration configuration)
	Prepares ActionsFinder for cross-section and reaction dumps. More...
void	check_config_version_is_compatible (Configuration configuration)
	Checks if the SMASH version is compatible with the version of the configuration file. More...
void	check_for_unused_config_values (const Configuration &configuration)
	Checks if there are unused config values. More...
void	ignore_simulation_config_values (Configuration &configuration)
	Remove all config values that are only needed for simulations. More...
void	initialize_particles_and_decays (Configuration &configuration)
	Initialize the particles and decays from the configuration. More...
void	initialize_particles_and_decays (Configuration &configuration, sha256::Hash hash, bf::path tabulations_path)
	Initialize the particles and decays from the configuration, the hash and the path to the cashed resonance integrals. More...

Function Documentation

print_disclaimer()

void smash::anonymous_namespace{smash.cc}::print_disclaimer

(

)

Print the disclaimer.

Definition at line 177 of file smash.cc.

                        {
  std::cout
      << "###################################################################"
      << "############"
      << "\n"
      << "\n"
      << "            :::s.\n"
      << "       ....  ''ss::                                                  "
         "ah:\n"
      << "     a::''.   ..:sss                                                "
         ".HH.\n"
      << "   mss'..     ...s'm.   sSA##As  mAhh##hsh##s.   .hA##ASa  sS###As  "
         "hMAh##h.\n"
      << "  :a':'.      .'':as   sM#'     .HHm''HMS''AMs  mMA' .AMs aMA.     "
         "'HHa..HM:\n"
      << "  .a:s'.    ..''ss     'h#H#S.  mMm  'M#' .HH. 'MH.  :MA  'h#H#S.  "
         "hMm  :M#\n"
      << "   .::ss'.  ....          'SMm .HH.  SMa  hMm  sM#..mHMs     'AMa "
         "'MH.  SMa\n"
      << "      .s::'           #SMASHh  aMS  .MH:  HM:   #MMMmMM. #SMASHh  "
         "aMS  .MM.\n"
      << "\n"
      << "###################################################################"
      << "############"
      << "\n"
      << " This is SMASH version: " << VERSION_MAJOR << "\n"
      << " Simulating Many Accelerated Strongly-interacting Hadrons"
      << "\n"
      << "\n"
      << " Distributed under the GNU General Public License 3.0"
      << " (GPLv3 or later)."
      << "\n"
      << " See LICENSE for details."
      << "\n"
      << " For the full list of contributors see AUTHORS."
      << "\n"
      << "\n"
      << " When using SMASH, please cite"
      << "\n"
      << "      J. Weil et al., Phys.Rev. C94 (2016) no.5, 054905"
      << "\n"
      << " together with the software DOI for the specific code version "
      << "employed:"
      << "\n"
      << "      https://doi.org/10.5281/zenodo.3484711."
      << "\n"
      << " In addition, if Pythia is used please cite"
      << "\n"
      << "      T. Sjöstrand, S. Mrenna and P. Skands, JHEP05 (2006) 026,"
      << "\n"
      << "              Comput. Phys. Comm. 178 (2008) 852."
      << "\n"
      << "\n"
      << " Webpage: https://smash-transport.github.io"
      << "\n"
      << "\n"
      << " Report issues at https://github.com/smash-transport/smash"
      << "\n"
      << " or contact us by email at elfner@itp.uni-frankfurt.de"
      << "\n"
      << "\n"
      << "###################################################################"
      << "############"
      << "\n"
      << "\n";
}

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default_output_path()

bf::path smash::anonymous_namespace{smash.cc}::default_output_path

(

)

Returns

the default path for output.

Definition at line 263 of file smash.cc.

                             {
  const bf::path p = bf::absolute("data");
  if (!bf::exists(p)) {
    return p / "0";
  }
  bf::path p2;
  for (int id = 0; id < std::numeric_limits<int>::max(); ++id) {
    p2 = p / std::to_string(id);
    if (!bf::exists(p2)) {
      break;
    }
  }
  if (p == p2) {
    throw OutputDirectoryOutOfIds("no unique data subdir ID left");
  }
  return p2;
}

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ensure_path_is_valid()

void smash::anonymous_namespace{smash.cc}::ensure_path_is_valid

(

const bf::path &

path

)

Ensures the output path is valid.

Exceptions

OutputDirectoryExists

if the Output directory already exists.

Parameters

[in]

path

The output path to be written to

Definition at line 287 of file smash.cc.

                                              {
  if (bf::exists(path)) {
    if (!bf::is_directory(path)) {
      throw OutputDirectoryExists("The given path (" + path.native() +
                                  ") exists, but it is not a directory.");
    }
  } else {
    if (!bf::create_directories(path)) {
      throw OutputDirectoryExists(
          "Race condition detected: The directory " + path.native() +
          " did not exist a few cycles ago, but was created in the meantime by "
          "a different process.");
    }
  }
}

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actions_finder_for_dump()

ScatterActionsFinder smash::anonymous_namespace{smash.cc}::actions_finder_for_dump

(

Configuration

configuration

)

Prepares ActionsFinder for cross-section and reaction dumps.

Parameters

[in]

configuration

Necessary parameters to switch reactions on/off

Returns

The constructed Scatteractionsfinder.

Definition at line 309 of file smash.cc.

                                                                          {
  // The following parameters are only relevant for nucleus-nucleus collisions.
  // Setting them to the valuing values makes sure they don't have any effect.
  const std::vector<bool> nucleon_has_interacted = {};
  const int N_tot = 0;
  const int N_proj = 0;
 
  ExperimentParameters params = create_experiment_parameters(configuration);
  return ScatterActionsFinder(configuration, params, nucleon_has_interacted,
                              N_tot, N_proj);
}

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check_config_version_is_compatible()

void smash::anonymous_namespace{smash.cc}::check_config_version_is_compatible

(

Configuration

configuration

)

Checks if the SMASH version is compatible with the version of the configuration file.

Parameters

[in]

configuration

The configuration object

Exceptions

Runtime

error if versions do not match or if config version is invalid

Definition at line 329 of file smash.cc.

                                                                     {
  const std::string smash_version = "1.8";
  const std::set<std::string> compatible_config_versions = {"1.8"};
 
  const std::string config_version = configuration.read({"Version"});
 
  if (compatible_config_versions.find(config_version) ==
      compatible_config_versions.end()) {
    std::stringstream err;
    err << "The version of the configuration file (" << config_version
        << ") is not compatible with the SMASH version (" << smash_version
        << ").\nThe following config versions are supported:\n";
    for (auto it : compatible_config_versions) {
      err << it << " ";
    }
    err << "\nPlease consider updating your config or using a compatible SMASH"
           " version.";
    throw std::runtime_error(err.str());
  }
}

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check_for_unused_config_values()

void smash::anonymous_namespace{smash.cc}::check_for_unused_config_values

(

const Configuration &

configuration

)

Checks if there are unused config values.

Definition at line 353 of file smash.cc.

                                                                        {
  const std::string report = configuration.unused_values_report();
 
  if (report != "{}") {
    throw std::runtime_error(
        "The following configuration values were not used:\n" + report);
  }
}

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ignore_simulation_config_values()

void smash::anonymous_namespace{smash.cc}::ignore_simulation_config_values

(

Configuration &

configuration

)

Remove all config values that are only needed for simulations.

This is useful when checking for unused config value when SMASH only outputs cross sections, resonance properties or possible reactions.

Definition at line 368 of file smash.cc.

                                                                   {
  for (const std::string s :
       {"Version", "particles", "decaymodes", "Modi", "General", "Output",
        "Lattice", "Potentials", "Forced_Thermalization"}) {
    if (configuration.has_value({s.c_str()})) {
      configuration.take({s.c_str()});
    }
  }
}

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initialize_particles_and_decays() [1/2]

void smash::anonymous_namespace{smash.cc}::initialize_particles_and_decays

(

Configuration &

configuration

)

Initialize the particles and decays from the configuration.

Definition at line 379 of file smash.cc.

                                                                   {
  ParticleType::create_type_list(configuration.take({"particles"}));
  DecayModes::load_decaymodes(configuration.take({"decaymodes"}));
  ParticleType::check_consistency();
}

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initialize_particles_and_decays() [2/2]

void smash::anonymous_namespace{smash.cc}::initialize_particles_and_decays	(	Configuration &	configuration,
		sha256::Hash	hash,
		bf::path	tabulations_path
	)

Initialize the particles and decays from the configuration, the hash and the path to the cashed resonance integrals.

Definition at line 388 of file smash.cc.

                                                              {
  initialize_particles_and_decays(configuration);
  logg[LMain].info("Tabulating cross section integrals...");
  IsoParticleType::tabulate_integrals(hash, tabulations_path);
}

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