inline_copy_map_obj.cc

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/*! \file
 * \brief Inline task to read an object into a named buffer
 */
 
#include "chromabase.h"
#include "singleton.h"
#include "funcmap.h"
 
#include "meas/inline/abs_inline_measurement_factory.h"
#include "meas/inline/io/inline_copy_map_obj.h"
#include "meas/inline/io/named_objmap.h"
 
#include "util/ferm/subset_ev_pair.h"
#include "util/ferm/map_obj/map_obj_factory_w.h"
#include "util/ferm/map_obj/map_obj_aggregate_w.h"
 
namespace Chroma 
{ 
  namespace InlineCopyMapObjEnv 
  { 
    namespace CopyMapObjCallEnv
    { 
      struct DumbDisambiguator {};
 
      //! Write object function std::map
      /*! \ingroup inlineio */
      typedef SingletonHolder< 
        FunctionMap<DumbDisambiguator,
                    void,
                    std::string,
                    TYPELIST_1(const Params&),
                    void (*)(const Params& named_obj),
                    StringFunctionMapError> >
      TheCopyMapObjFuncMap;
 
 
      namespace 
      { 
        template<typename K, typename V>
        void copyMapObj(const Params& params)
        {
          // Input object
          Handle< QDP::MapObject<K,V> > input_obj = TheNamedObjMap::Instance().getData< Handle< QDP::MapObject<K,V> > >(params.named_obj.input_id);
          std::vector<K> keys; input_obj->keys(keys);
 
          std::string meta_data;
          input_obj->getUserdata(meta_data);
 
          // Create output object
          std::istringstream  xml_s(params.named_obj.output_obj.xml);
          XMLReader MapObjReader(xml_s);
        
          // Create the entry
          Handle< QDP::MapObject<K,V> > output_obj(
            SingletonHolder< ObjectFactory<QDP::MapObject<K,V>, 
            std::string,
            TYPELIST_3(XMLReader&, const std::string&, const std::string&),
            QDP::MapObject<K,V>* (*)(XMLReader&, const std::string&, const std::string&), 
            StringFactoryError> >::Instance().createObject(params.named_obj.output_obj.id,
                                                           MapObjReader,
                                                           params.named_obj.output_obj.path,
                                                           meta_data) );
 
          TheNamedObjMap::Instance().create< Handle< QDP::MapObject<K,V> >, Handle< QDP::MapObject<K,V> > >(params.named_obj.output_id, output_obj);
 
          // Copy the key/value-s
          for(int i=0; i < keys.size(); i++) 
          {
            V v;
            input_obj->get(keys[i],v);
            output_obj->insert(keys[i],v);
          }
        }
 
 
        bool registerAll(void) 
        {
          bool success = true; 
 
          success &= TheCopyMapObjFuncMap::Instance().registerFunction("KeyTKeyPropColorVec_tValTLatticeFermion",
                                                                       copyMapObj<KeyPropColorVec_t, LatticeFermion>);
          
          success &= TheCopyMapObjFuncMap::Instance().registerFunction("KeyTintValTEVPairLatticeColorVector",
                                                                       copyMapObj<int, EVPair<LatticeColorVector> >);
          
          success &= TheCopyMapObjFuncMap::Instance().registerFunction("KeyTcharValTfloat",
                                                                       copyMapObj<char, float>);
          return success;
        }
      }
    }
 
 
    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 = "COPY_MAP_OBJECT";
    }
 
    //! Register all the factories
    bool registerAll() 
    {
      bool success = true; 
      if (! registered)
      {
        success &= TheInlineMeasurementFactory::Instance().registerObject(name, createMeasurement);
        success &= CopyMapObjCallEnv::registerAll();
        registered = true;
      }
      return success;
    }
 
 
    //! Object buffer
    void read(XMLReader& xml, const std::string& path, Params::NamedObject_t& input)
    {
      XMLReader inputtop(xml, path);
 
      read(inputtop, "object_type", input.object_type);
      read(inputtop, "input_id", input.input_id);
      read(inputtop, "output_id", input.output_id);
      input.output_obj = readXMLGroup(inputtop, "MapObject", "MapObjType");
    }
 
    // 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);
      }
      catch(const std::string& e) 
      {
        QDPIO::cerr << __func__ << ": caught Exception reading XML: " << e << std::endl;
        QDP_abort(1);
      }
    }
 
 
    void 
    InlineMeas::operator()(unsigned long update_no, XMLWriter& xml_out) 
    {
      START_CODE();
 
      registerAll();
 
      push(xml_out, "read_map_object_disk");
      write(xml_out, "update_no", update_no);
 
      QDPIO::cout << name << ": std::map object copy" << std::endl;
      StopWatch swatch;
 
      // Copy the object
      // ONLY named object format is supported in this task
      // Other tasks could support other disk formats
      QDPIO::cout << "Attempt to copy input object name = " << params.named_obj.input_id << std::endl;
 
      write(xml_out, "object_type", params.named_obj.object_type);
      write(xml_out, "input_id", params.named_obj.input_id);
      write(xml_out, "output_id", params.named_obj.output_id);
 
      try
      {
        swatch.reset();
        swatch.start();
 
        // Copy the object
        CopyMapObjCallEnv::TheCopyMapObjFuncMap::Instance().callFunction(params.named_obj.object_type, params);
 
        // Use the xml from the first object
        XMLReader file_xml, record_xml;
        TheNamedObjMap::Instance().get(params.named_obj.input_id).getFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.input_id).getRecordXML(record_xml);
 
        TheNamedObjMap::Instance().get(params.named_obj.output_id).setFileXML(file_xml);
        TheNamedObjMap::Instance().get(params.named_obj.output_id).setRecordXML(record_xml);
 
        swatch.stop();
 
        QDPIO::cout << "Object successfully copied: time= " 
                    << swatch.getTimeInSeconds() 
                    << " secs" << std::endl;
      }
      catch( std::bad_cast ) 
      {
        QDPIO::cerr << name 
                    << ": cast error for input_id= " << params.named_obj.input_id 
                    << " with type= " << params.named_obj.object_type 
                    << std::endl;
        QDP_abort(1);
      }
      catch (const std::string& e) 
      {
        QDPIO::cerr << name << ": error message: " << e << std::endl;
        QDP_abort(1);
      }
      catch(const char* e) 
      { 
        QDPIO::cout << name << ": Caught const char * exception: " << e << std::endl;
        QDP_abort(1);
      }
    
      QDPIO::cout << name << ": ran successfully" << std::endl;
 
      pop(xml_out);  // read_named_obj
 
      END_CODE();
    } 
 
  }
}