MueLu_TwoLevelMatlabFactory_def.hpp

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#ifndef MUELU_TWOLEVELMATLABFACTORY_DEF_HPP
#define MUELU_TWOLEVELMATLABFACTORY_DEF_HPP
#include <Xpetra_Matrix.hpp>
#include <Xpetra_MultiVector.hpp>

#include "MueLu_Monitor.hpp"
#include "MueLu_Aggregates.hpp"
#include "MueLu_AmalgamationInfo.hpp"
#include "MueLu_TwoLevelMatlabFactory_decl.hpp"
#include "MueLu_MatlabUtils_decl.hpp"

#include <iostream>


#ifdef HAVE_MUELU_MATLAB
#include "mex.h"

namespace MueLu {

  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  TwoLevelMatlabFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::TwoLevelMatlabFactory()
    : hasDeclaredInput_(false) { }

  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  RCP<const ParameterList> TwoLevelMatlabFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::GetValidParameterList() const {
    RCP<ParameterList> validParamList = getInputParamList();
    validParamList->set<std::string>("Provides"     , "" ,"A comma-separated list of objects provided on the coarse level by the TwoLevelMatlabFactory");
    validParamList->set<std::string>("Needs Fine"   , "", "A comma-separated list of objects needed on the fine level by the TwoLevelMatlabFactory");
    validParamList->set<std::string>("Needs Coarse" , "", "A comma-separated list of objects needed on the coarse level by the TwoLevelMatlabFactory");
    validParamList->set<std::string>("Function"     , "" , "The name of the Matlab MEX function to call for Build()");    
    return validParamList;
  }

  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void TwoLevelMatlabFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::DeclareInput(Level &fineLevel, Level &coarseLevel) const {
    using namespace std;
    const Teuchos::ParameterList& pL = GetParameterList();
    // Get needs strings
    const std::string str_nf = pL.get<std::string>("Needs Fine");
    const std::string str_nc = pL.get<std::string>("Needs Coarse");
    needsFine_ = tokenizeList(str_nf);
    needsCoarse_ = tokenizeList(str_nc);
    for(auto fineNeed : needsFine_)
    {
      if(!IsParamMuemexVariable(fineNeed) && fineNeed != "Level")
        this->Input(fineLevel, fineNeed);
    }
    for(auto coarseNeed : needsCoarse_)
    {
      if(!IsParamMuemexVariable(coarseNeed) && coarseNeed != "Level")
        this->Input(coarseLevel, coarseNeed);
    }
    hasDeclaredInput_ = true;
  }

  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void TwoLevelMatlabFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::Build(Level& fineLevel, Level& coarseLevel) const {
    FactoryMonitor m(*this, "Build", coarseLevel);

    const Teuchos::ParameterList& pL = GetParameterList();
    using Teuchos::rcp;
    using Teuchos::RCP;
    using namespace std;
    string needsFine = pL.get<string>("Needs Fine");
    string needsCoarse = pL.get<string>("Needs Coarse");
    vector<RCP<MuemexArg>> InputArgs = processNeeds<Scalar, LocalOrdinal, GlobalOrdinal, Node>(this, needsFine, fineLevel);
    vector<RCP<MuemexArg>> InputArgsCoarse = processNeeds<Scalar, LocalOrdinal, GlobalOrdinal, Node>(this, needsCoarse, coarseLevel);
    //Add coarse args to the end of InputArgs
    InputArgs.reserve(InputArgs.size() + InputArgsCoarse.size());
    InputArgs.insert(InputArgs.begin(), InputArgsCoarse.begin(), InputArgsCoarse.end());

    // Determine output
    string provides = pL.get<string>("Provides");
    size_t numProvides = tokenizeList(provides).size();
    // Call mex function
    string matlabFunction = pL.get<string>("Function");
    if(!matlabFunction.length())
      throw runtime_error("Invalid matlab function name");
    vector<RCP<MuemexArg>> mexOutput = callMatlab(matlabFunction, numProvides, InputArgs);
    processProvides<Scalar, LocalOrdinal, GlobalOrdinal, Node>(mexOutput, this, provides, coarseLevel);
  }

  template <class Scalar,class LocalOrdinal, class GlobalOrdinal, class Node>
  std::string TwoLevelMatlabFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::description() const {
    std::ostringstream out;
    const Teuchos::ParameterList& pL = GetParameterList();
    out << "TwoLevelMatlabFactory["<<pL.get<std::string>("Function")<<"]";
    return out.str();
  }


} //namespace MueLu

#define MUELU_TWOLEVELMATLABFACTORY_SHORT
#endif // HAVE_MUELU_MATLAB

#endif // MUELU_TWOLEVELMATLABFACTORY_DEF_HPP