genie::utils::app_init Namespace Reference

Initialization code commonly occuring in GENIE apps, factored out from existing apps for convenience. Not generic GENIE initialization code. More...

Functions
void	RandGen (long int seed)
void	XSecTable (string inpfile, bool require_table)
void	MesgThresholds (string inpfile)
void	CacheFile (string inpfile)

Detailed Description

Initialization code commonly occuring in GENIE apps, factored out from existing apps for convenience. Not generic GENIE initialization code.

Author

Costas Andreopoulos <constantinos.andreopoulos cern.ch> University of Liverpool & STFC Rutherford Appleton Laboratory

January 31, 2013

Copyright (c) 2003-2020, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Function Documentation

void genie::utils::app_init::CacheFile

(

string

inpfile

)

Definition at line 117 of file AppInit.cxx.

{
  if(inp_file.size() > 0) {
    Cache::Instance()->OpenCacheFile(inp_file);
  }
}

void genie::utils::app_init::MesgThresholds

(

string

inpfile

)

Definition at line 99 of file AppInit.cxx.

{
  std::vector<std::string> files = genie::utils::str::Split(filelist,":;,");
  for (size_t i=0; i < files.size(); ++i ) {
    std::string inp_file = files[i];
    if(inp_file.size() > 0) {
      Messenger * m = Messenger::Instance();
      bool ok = m->SetPrioritiesFromXmlFile(inp_file);
      if(!ok) {
        LOG("AppInit", pWARN)
          << "Could not load customized mesg thresholds from: "
          << inp_file;
      }
    }
  }

}

void genie::utils::app_init::RandGen

(

long int

seed

)

Definition at line 30 of file AppInit.cxx.

{
  // Set random number seed, if a value was set at the command-line.
  if(seed > 0) {
    RandomGen::Instance()->SetSeed(seed);
  }
}

void genie::utils::app_init::XSecTable	(	string	inpfile,
		bool	require_table
	)

Definition at line 38 of file AppInit.cxx.

{
  // Load cross-section splines using file specified at the command-line.

  XSecSplineList * xspl = XSecSplineList::Instance();

  // don't try to expand if no filename actually given ...
  string expandedinpfile = "";
  string fullinpfile     = "";
  if ( inpfile != "" ) {
    // expand in case of embedded env var or ~
    expandedinpfile = gSystem->ExpandPathName(inpfile.c_str());
    if (utils::system::FileExists(expandedinpfile)) {
      // use the file as given if possible
      fullinpfile   = expandedinpfile;
    } else {
      // look for file in $GXMLPATH, then $GENIE/config
      // return input name if not found any of those places (thus allowing CWD)
      fullinpfile   = genie::utils::xml::GetXMLFilePath(expandedinpfile);
    }
  }

  // file was specified & exists - load table
  if (utils::system::FileExists(fullinpfile)) {
    xspl = XSecSplineList::Instance();
    XmlParserStatus_t status = xspl->LoadFromXml(fullinpfile);
    if (status != kXmlOK) {
      LOG("AppInit", pFATAL)
         << "Problem reading file: " << expandedinpfile;
       gAbortingInErr = true;
       exit(1);
    }
  }

  // file doesn't exist
  else {
    // if one was specified, report & exit
    if (inpfile.size() > 0) {
       LOG("AppInit", pFATAL)
          << "Input cross-section file [" << inpfile << "] does not exist!\n"
          << "looked for " << expandedinpfile << " in $GXMLPATH locations ";
       gAbortingInErr = true;
       exit(1);
    }
    // if one was not specified, warn and decide whether to exit based on the
    // input `require_table' flag
    else {
      if(!require_table) {
         LOG("AppInit", pWARN) << "No cross-section file was specified in the application inputs";
         LOG("AppInit", pWARN) << "If none is loaded, event generation might be inefficient";
      } else {
         LOG("AppInit", pFATAL) << "No cross-section file was specified in the application inputs";
         LOG("AppInit", pFATAL) << "This is mandatory as, otherwise, event generation will be prohibitively inefficient";
         gAbortingInErr = true;
         exit(1);
      }
    }
  }

}