inline_nersc_read_obj.cc

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/*! \file
 * \brief Inline task to read an object from a named buffer
 *
 * Named object writing
 */
 
#include "chromabase.h"
#include "qdp_iogauge.h"
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/inline/io/inline_nersc_read_obj.h"
#include "meas/inline/io/named_objmap.h"
 
namespace Chroma 
{ 
  namespace InlineNERSCReadNamedObjEnv 
  { 
    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 = "NERSC_READ_NAMED_OBJECT";
    }
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        registered = true;
      }
      return success;
    }
 
 
    //! Object buffer
    void write(XMLWriter& xml, const std::string& path, const Params::NamedObject_t& input)
    {
      push(xml, path);
      
      write(xml, "object_id", input.object_id);
 
      pop(xml);
    }
 
    //! File output
    void write(XMLWriter& xml, const std::string& path, const Params::File_t& input)
    {
      push(xml, path);
 
      write(xml, "file_name", input.file_name);
 
      pop(xml);
    }
 
 
    //! Object buffer
    void read(XMLReader& xml, const std::string& path, Params::NamedObject_t& input)
    {
      XMLReader inputtop(xml, path);
 
      read(inputtop, "object_id", input.object_id);
    }
 
    //! File output
    void read(XMLReader& xml, const std::string& path, Params::File_t& input)
    {
      XMLReader inputtop(xml, path);
 
      read(inputtop, "file_name", input.file_name);
    }
 
 
    // 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, "NamedObject", named_obj);
 
        // Read in the destination
        read(paramtop, "File", file);
      }
      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, "NamedObject", named_obj);
 
      // Write out the destination
      write(xml_out, "File", file);
 
      pop(xml_out);
    }
 
 
    void 
    InlineMeas::operator()(unsigned long update_no,
                           XMLWriter& xml_out) 
    {
      START_CODE();
      
      push(xml_out, "nersc_read_named_obj");
      write(xml_out, "update_no", update_no);
 
      QDPIO::cout << InlineNERSCReadNamedObjEnv::name << ": object reader" << std::endl;
      StopWatch swatch;
 
      // Read the object
      // ONLY SciDAC output format is supported in this task
      // Other tasks could support other disk formats
      QDPIO::cout << "Attempt to read object name = " << params.named_obj.object_id << std::endl;
      write(xml_out, "object_id", params.named_obj.object_id);
      try
      {
        swatch.reset();
 
        XMLReader record_xml;
        multi1d<LatticeColorMatrix> u(Nd);
 
        // Read the object
        swatch.start();
        QDP::readArchiv(record_xml, u, params.file.file_name);
        swatch.stop();
 
        XMLBufferWriter file_xml;
        push(file_xml, "NERSC");
        pop(file_xml);
 
        TheNamedObjMap::Instance().create< multi1d<LatticeColorMatrix> >(params.named_obj.object_id);
        TheNamedObjMap::Instance().getData< multi1d<LatticeColorMatrix> >(params.named_obj.object_id) = u;
        TheNamedObjMap::Instance().get(params.named_obj.object_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.object_id).setRecordXML(record_xml);
 
        QDPIO::cout << "Object successfully written: time= " 
                    << swatch.getTimeInSeconds() 
                    << " secs" << std::endl;
      }
      catch( std::bad_cast ) 
      {
        QDPIO::cerr << name << ": cast error" 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << name << ": error message: " << e 
                    << std::endl;
        QDP_abort(1);
      }
    
      QDPIO::cout << name << ": ran successfully" << std::endl;
 
      pop(xml_out);  // read_named_obj
 
      END_CODE();
    } 
 
  } // namespace InlineNERSCReadNamedObjEnv 
 
}