Tpetra_ImportExportData_def.hpp

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#ifndef TPETRA_IMPORTEXPORTDATA_DEF_HPP
#define TPETRA_IMPORTEXPORTDATA_DEF_HPP

#include "Tpetra_Map.hpp"
#include "Teuchos_FancyOStream.hpp"
#include "Teuchos_ParameterList.hpp"

namespace Tpetra {
namespace Classes {
  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  ImportExportData<LocalOrdinal,GlobalOrdinal,Node>::
  ImportExportData (const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& source,
                    const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& target) :
    source_ (source),
    target_ (target),
    out_ (Teuchos::getFancyOStream (Teuchos::rcpFromRef (std::cerr))),
    numSameIDs_ (0),
    distributor_ (source->getComm (), out_),
    isLocallyComplete_ (true) // Import/Export constructor may change this
  {}

  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  ImportExportData<LocalOrdinal,GlobalOrdinal,Node>::
  ImportExportData (const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& source,
                    const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& target,
                    const Teuchos::RCP<Teuchos::FancyOStream>& out) :
    source_ (source),
    target_ (target),
    out_ (out),
    numSameIDs_ (0),
    distributor_ (source->getComm (), out_),
    isLocallyComplete_ (true) // Import/Export constructor may change this
  {}

  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  ImportExportData<LocalOrdinal,GlobalOrdinal,Node>::
  ImportExportData (const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& source,
                    const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& target,
                    const Teuchos::RCP<Teuchos::ParameterList>& plist) :
    source_ (source),
    target_ (target),
    out_ (Teuchos::getFancyOStream (Teuchos::rcpFromRef (std::cerr))),
    numSameIDs_ (0),
    distributor_ (source->getComm (), out_, plist),
    isLocallyComplete_ (true) // Import/Export constructor may change this
  {}

  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  ImportExportData<LocalOrdinal,GlobalOrdinal,Node>::
  ImportExportData (const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& source,
                    const Teuchos::RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> >& target,
                    const Teuchos::RCP<Teuchos::FancyOStream>& out,
                    const Teuchos::RCP<Teuchos::ParameterList>& plist) :
    source_ (source),
    target_ (target),
    out_ (out),
    numSameIDs_ (0),
    distributor_ (source->getComm (), out_, plist),
    isLocallyComplete_ (true) // Import/Export constructor may change this
  {}

  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  Teuchos::RCP<ImportExportData<LocalOrdinal, GlobalOrdinal, Node> >
  ImportExportData<LocalOrdinal,GlobalOrdinal,Node>::reverseClone()
  {
    using Teuchos::ArrayView;

    Teuchos::RCP<ImportExportData<LocalOrdinal,GlobalOrdinal,Node> > tData =
      Teuchos::rcp (new ImportExportData<LocalOrdinal,GlobalOrdinal,Node> (target_, source_));

    // Things that stay the same
    tData->numSameIDs_       = numSameIDs_;

    // Things that reverse
    tData->distributor_      = *distributor_.getReverse();
    tData->permuteToLIDs_    = permuteFromLIDs_;
    tData->permuteFromLIDs_  = permuteToLIDs_;

    // Remotes / exports (easy part)
    tData->exportLIDs_       = remoteLIDs_;
    tData->remoteLIDs_       = exportLIDs_;
    tData->exportPIDs_.resize(tData->exportLIDs_.size());

    // Remotes / exports (hard part) - extract the exportPIDs from the remotes of my distributor
    size_t NumReceives                  = distributor_.getNumReceives();
    ArrayView<const int> ProcsFrom      = distributor_.getProcsFrom();
    ArrayView<const size_t> LengthsFrom = distributor_.getLengthsFrom();

    // isLocallyComplete is a local predicate.
    // It could be true in one direction but false in another.

    bool isLocallyComplete = true; // by default
    for (size_t i = 0, j = 0; i < NumReceives; ++i) {
      const int pid = ProcsFrom[i];
      if (pid == -1) {
        isLocallyComplete = false;
      }
      for (size_t k = 0; k < LengthsFrom[i]; ++k) {
        tData->exportPIDs_[j] = pid;
        ++j;
      }
    }
    tData->isLocallyComplete_ = isLocallyComplete;

    return tData;
  }


  template <class LocalOrdinal, class GlobalOrdinal, class Node>
  ImportExportData<LocalOrdinal,GlobalOrdinal,Node>::~ImportExportData()
  {}

} // namespace Classes
} // namespace Tpetra

// Explicit instantiation macro.
// Only invoke this when in the Tpetra namespace.
// Most users do not need to use this.
//
// LO: The local ordinal type.
// GO: The global ordinal type.
// NODE: The Kokkos Node type.
#define TPETRA_IMPORTEXPORTDATA_INSTANT(LO, GO, NODE) \
  \
  namespace Classes { template class ImportExportData< LO , GO , NODE >; }

#endif // TPETRA_IMPORTEXPORTDATA_DEF_HPP