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#ifndef __TSQR_Trilinos_TsqrCommFactory_hpp
#define __TSQR_Trilinos_TsqrCommFactory_hpp
/// \file TsqrCommFactory.hpp
/// \brief Factory for TSQR messenger objects.
///
/// \warning TSQR users should <i>not</i> include this file directly.
#include <Teuchos_RCP.hpp>
#include <Tsqr_MessengerBase.hpp>
namespace TSQR {
namespace Trilinos {
// Forward declaration. TsqrFactory.hpp includes
// TsqrCommFactory.hpp, and TsqrTypeAdaptor.hpp includes
// TsqrFactory.hpp. We resolve the dependency with a forward
// declaration of TsqrTypeAdaptor here.
template< class S, class LO, class GO, class MV >
class TsqrTypeAdaptor;
/// \class CommFactory
/// \brief Factory for TSQR messenger objects.
///
template< class S, class LO, class GO, class MV >
class CommFactory {
public:
typedef S scalar_type;
typedef LO local_ordinal_type;
typedef GO global_ordinal_type;
typedef MV multivector_type;
typedef TsqrTypeAdaptor< S, LO, GO, MV > type_adaptor;
typedef typename type_adaptor::comm_type comm_type;
typedef typename type_adaptor::comm_ptr comm_ptr;
typedef Teuchos::RCP< MessengerBase< S > > scalar_messenger_ptr;
typedef Teuchos::RCP< MessengerBase< LO > > ordinal_messenger_ptr;
/// Given a raw pointer to a communicator object (implementing
/// the underlying distributed-memory communication protocol),
/// return (through the last two reference arguments) wrappers
/// suitable for TSQR.
virtual void
makeMessengers (const comm_ptr& comm,
scalar_messenger_ptr& scalarMessenger,
ordinal_messenger_ptr& ordinalMessenger) = 0;
//! Virtual destructor for memory safety.
virtual ~CommFactory () {}
};
} // namespace Trilinos
} // namespace TSQR
#endif // __TSQR_Trilinos_TsqrCommFactory_hpp
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