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Teuchos_RCPBoostSharedPtrConversionsDecl.hpp
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00001 // @HEADER
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 
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 
00081 template<class T>
00082 class RCPDeleter
00083 {
00084 public:
00086   RCPDeleter( const RCP<T> &rcp ) : rcp_(rcp) {}
00088   typedef void result_type;
00090   typedef T * argument_type;
00092   void operator()(T * x) const { rcp_ = null; }
00094   const RCP<T>& ptr() const { return rcp_; }
00095 private:
00096   mutable RCP<T> rcp_;
00097   RCPDeleter(); // Not defined and not to be called!
00098 };
00099 
00100 
00111 template<class T>
00112 RCP<T> rcp( const boost::shared_ptr<T> &sptr );
00113 
00114 
00126 template<class T>
00127 boost::shared_ptr<T> shared_pointer( const RCP<T> &rcp );
00128 
00129 
00130 } // namespace Teuchos
00131 
00132 
00133 namespace boost {
00134 
00135 
00140 template<class T> inline
00141 bool is_null( const boost::shared_ptr<T> &p )
00142 {
00143   return p.get() == 0;
00144 }
00145 
00146 
00151 template<class T> inline
00152 bool nonnull( const boost::shared_ptr<T> &p )
00153 {
00154   return p.get() != 0;
00155 }
00156 
00157 
00158 } // namespace boost
00159 
00160 
00161 #endif  // TEUCHOS_RCP_SHAREDPTR_CONVERSIONS_DECL_HPP
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