Teuchos_RCPBoostSharedPtrConversionsDecl.hpp

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00002 // ***********************************************************************
00003 // 
00004 //                    Teuchos: Common Tools Package
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP
00030 #define TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP
00031 
00032 #include "Teuchos_RCPDecl.hpp"
00033 #include "boost/shared_ptr.hpp"
00034 
00035 
00036 namespace Teuchos {
00037 
00038 
00054 
00055 
00058 template<class T>
00059 class DeallocBoostSharedPtr
00060 {
00061 public:
00063   DeallocBoostSharedPtr( const boost::shared_ptr<T> &sptr ) : sptr_(sptr) {}
00065   typedef T ptr_t;
00067   void free( T* ptr_in ) const { sptr_.reset(); }
00069   const boost::shared_ptr<T>& ptr() const { return sptr_; }
00070 private:
00071   mutable boost::shared_ptr<T> sptr_;
00072   DeallocBoostSharedPtr(); // Not defined and not to be called!
00073 };
00074 
00075 
00079 template<class T>
00080 class RCPDeleter
00081 {
00082 public:
00084   RCPDeleter( const RCP<T> &rcp ) : rcp_(rcp) {}
00086   typedef void result_type;
00088   typedef T * argument_type;
00090   void operator()(T * x) const { rcp_ = null; }
00092   const RCP<T>& ptr() const { return rcp_; }
00093 private:
00094   mutable RCP<T> rcp_;
00095   RCPDeleter(); // Not defined and not to be called!
00096 };
00097 
00098 
00107 template<class T>
00108 RCP<T> rcp( const boost::shared_ptr<T> &sptr );
00109 
00110 
00120 template<class T>
00121 boost::shared_ptr<T> shared_pointer( const RCP<T> &rcp );
00122 
00123 
00125 
00126 
00127 } // namespace Teuchos
00128 
00129 
00130 namespace boost {
00131 
00132 
00137 template<class T> inline
00138 bool is_null( const boost::shared_ptr<T> &p )
00139 {
00140   return p.get() == 0;
00141 }
00142 
00143 
00148 template<class T> inline
00149 bool nonnull( const boost::shared_ptr<T> &p )
00150 {
00151   return p.get() != 0;
00152 }
00153 
00154 
00155 } // namespace boost
00156 
00157 
00158 #endif  // TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP

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