inline_rng.cc

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/*! \file
 * \brief Inline task to read and write RNG seed
 */
 
#include "chromabase.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/inline/io/inline_rng.h"
 
namespace Chroma 
{ 
  namespace InlineSetRNGEnv 
  { 
    namespace
    {
      AbsInlineMeasurement* createMeasurement(XMLReader& xml_in, 
                                              const std::string& path) 
      {
        return new InlineMeas(Params(xml_in, path));
      }
 
      //! Local registration flag
      bool registered = false;
    }
 
    const std::string name = "SET_RNG";
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
    // Param stuff
    Params::Params() { frequency = 0; }
 
    Params::Params(XMLReader& xml_in, const std::string& path) 
    {
      try 
      {
        XMLReader paramtop(xml_in, path);
 
        if (paramtop.count("Frequency") == 1)
          read(paramtop, "Frequency", frequency);
        else
          frequency = 1;
 
        // Parameters for source construction
        read(paramtop, "RNG", ran_seed);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << __func__ << ": caught Exception reading XML: " << e << std::endl;
        QDP_abort(1);
      }
    }
 
 
    void
    Params::writeXML(XMLWriter& xml_out, const std::string& path) 
    {
      push(xml_out, path);
    
      // Parameters for source construction
      write(xml_out, "RNG", ran_seed);
 
      pop(xml_out);
    }
 
 
    void 
    InlineMeas::operator()(unsigned long update_no, XMLWriter& xml_out) 
    {
      START_CODE();
 
      push(xml_out, "SetRNG");
      write(xml_out, "update_no", update_no);
 
      // Set the RNG seed
      QDP::RNG::setrn(params.ran_seed);
      write(xml_out,"RNG", params.ran_seed);
    
      QDPIO::cout << name << ": ran successfully" << std::endl;
 
      pop(xml_out);  // read_named_obj
 
      END_CODE();
    } 
 
  }
}