Amesos2_MultiVecAdapter_decl.hpp

// @HEADER
//
// ***********************************************************************
//
//           Amesos2: Templated Direct Sparse Solver Package
//                  Copyright 2011 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//
// @HEADER

#ifndef AMESOS2_MULTIVEC_ADAPTER_DECL_HPP
#define AMESOS2_MULTIVEC_ADAPTER_DECL_HPP

#include <Teuchos_RCP.hpp>
#include <Teuchos_Ptr.hpp>
#include <Teuchos_ArrayView.hpp>
#include <Tpetra_Map.hpp>

#include "Amesos2_TypeDecl.hpp"

namespace Amesos2 {


  template <class MV>
  struct MultiVecAdapter {};

  template <class MV>
  Teuchos::RCP<MultiVecAdapter<MV> >
  createMultiVecAdapter(Teuchos::RCP<MV> mv){
    using Teuchos::rcp;

    if(mv.is_null()) return Teuchos::null;
    return( rcp(new MultiVecAdapter<MV>(mv)) );
  }

  template <class MV>
  Teuchos::RCP<const MultiVecAdapter<MV> >
  createConstMultiVecAdapter(Teuchos::RCP<const MV> mv){
    using Teuchos::rcp;
    using Teuchos::rcp_const_cast;

    if(mv.is_null()) return Teuchos::null;
    return( rcp(new MultiVecAdapter<MV>(Teuchos::rcp_const_cast<MV,const MV>(mv))).getConst() );
  }


  // Utilities for getting and putting data from MultiVecs //

  namespace Util {

    /*
     * If the multivector scalar type and the desired scalar tpye are
     * the same, then we can do a simple straight copy.
     */
    template <typename MV>
    struct same_type_get_copy {
      static void apply(const Teuchos::Ptr<const MV>& mv,
                        const Teuchos::ArrayView<typename MV::scalar_t>& v,
                        const size_t ldx,
                        Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    /*
     * In the case where the scalar type of the multi-vector and the
     * corresponding S type are different, then we need to first get a
     * copy of the scalar values, then convert each one into the S
     * type before inserting into the vals array.
     */
    template <typename MV, typename S>
    struct diff_type_get_copy {
      static void apply(const Teuchos::Ptr<const MV>& mv,
                        const Teuchos::ArrayView<S>& v,
                        const size_t& ldx,
                        Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    template <class MV, typename S>
    struct get_1d_copy_helper {
      static void
      do_get (const Teuchos::Ptr<const MV>& mv,
              const Teuchos::ArrayView<S>& vals,
              const size_t ldx,
              Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );

      static void
      do_get (const Teuchos::Ptr<const MV>& mv,
              const Teuchos::ArrayView<S>& vals,
              const size_t ldx,
              EDistribution distribution,
              typename MV::global_ordinal_t indexBase = 0);

      static void
      do_get (const Teuchos::Ptr<const MV>& mv,
              const Teuchos::ArrayView<S>& vals,
              const size_t ldx);
    };

    /*
     * If the multivector scalar type and the desired scalar tpye are
     * the same, then we can do a simple straight copy.
     */
    template <typename MV>
    struct same_type_data_put {
      static void apply(const Teuchos::Ptr<MV>& mv,
                        const Teuchos::ArrayView<typename MV::scalar_t>& data,
                        const size_t ldx,
                        Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    /*
     * In the case where the scalar type of the multi-vector and the
     * corresponding S type are different, then we need to first get a
     * copy of the scalar values, then convert each one into the S
     * type before inserting into the vals array.
     */
    template <typename MV, typename S>
    struct diff_type_data_put {
      static void apply(const Teuchos::Ptr<MV>& mv,
                        const Teuchos::ArrayView<S>& data,
                        const size_t& ldx,
                        Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    template <class MV, typename S>
    struct put_1d_data_helper {
      static void do_put(const Teuchos::Ptr<MV>& mv,
                         const Teuchos::ArrayView<S>& data,
                         const size_t ldx,
                         Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );

      static void do_put(const Teuchos::Ptr<MV>& mv,
                         const Teuchos::ArrayView<S>& data,
                         const size_t ldx,
                         EDistribution distribution, typename MV::global_ordinal_t indexBase = 0);

      static void do_put(const Teuchos::Ptr<MV>& mv,
                         const Teuchos::ArrayView<S>& data,
                         const size_t ldx);
    };
  }
} // end namespace Amesos2

#include "Amesos2_TpetraMultiVecAdapter_decl.hpp"
#ifdef HAVE_AMESOS2_EPETRA
#  include "Amesos2_EpetraMultiVecAdapter_decl.hpp"
#endif

#endif  // AMESOS2_MULTIVEC_ADAPTER_DECL_HPP