Teuchos_RCPBoostSharedPtrConversionsDecl.hpp

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// 
//                    Teuchos: Common Tools Package
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
// 
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// This library is distributed in the hope that it will be useful, but
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//  
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
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#ifndef TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP
#define TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP

#include "Teuchos_RCPDecl.hpp"
#include "boost/shared_ptr.hpp"


namespace Teuchos {




template<class T>
class DeallocBoostSharedPtr
{
public:
  DeallocBoostSharedPtr( const boost::shared_ptr<T> &sptr ) : sptr_(sptr) {}
  typedef T ptr_t;
  void free( T* ptr_in ) const { sptr_.reset(); }
  const boost::shared_ptr<T>& ptr() const { return sptr_; }
private:
  mutable boost::shared_ptr<T> sptr_;
  DeallocBoostSharedPtr(); // Not defined and not to be called!
};


template<class T>
class RCPDeleter
{
public:
  RCPDeleter( const RCP<T> &rcp ) : rcp_(rcp) {}
  typedef void result_type;
  typedef T * argument_type;
  void operator()(T * x) const { rcp_ = null; }
  const RCP<T>& ptr() const { return rcp_; }
private:
  mutable RCP<T> rcp_;
  RCPDeleter(); // Not defined and not to be called!
};


template<class T>
RCP<T> rcp( const boost::shared_ptr<T> &sptr );


template<class T>
boost::shared_ptr<T> shared_pointer( const RCP<T> &rcp );




} // namespace Teuchos


namespace boost {


template<class T> inline
bool is_null( const boost::shared_ptr<T> &p )
{
  return p.get() == 0;
}


template<class T> inline
bool nonnull( const boost::shared_ptr<T> &p )
{
  return p.get() != 0;
}


} // namespace boost


#endif  // TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP

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