text: #ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
  #define BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
  
  //  make_shared.hpp
  //
  //  Copyright (c) 2007, 2008 Peter Dimov
  //
  //  Distributed under the Boost Software License, Version 1.0.
  //  See accompanying file LICENSE_1_0.txt or copy at
  //  http://www.boost.org/LICENSE_1_0.txt
  //
  //  See http://www.boost.org/libs/smart_ptr/make_shared.html
  //  for documentation.
  
  #include <boost/config.hpp>
  #include <boost/smart_ptr/shared_ptr.hpp>
  #include <boost/type_traits/type_with_alignment.hpp>
  #include <boost/type_traits/alignment_of.hpp>
  #include <cstddef>
  #include <new>
  
  namespace boost
  {
  
  namespace detail
  {
  
  template< std::size_t N, std::size_t A > struct sp_aligned_storage
  {
      union type
      {
          char data_[ N ];
          typename boost::type_with_alignment< A >::type align_;
      };
  };
  
  template< class T > class sp_ms_deleter
  {
  private:
  
      typedef typename sp_aligned_storage< sizeof( T ), ::boost::alignment_of< T >::value >::type storage_type;
  
      bool initialized_;
      storage_type storage_;
  
  private:
  
      void destroy()
      {
          if( initialized_ )
          {
              reinterpret_cast< T* >( storage_.data_ )->~T();
              initialized_ = false;
          }
      }
  
  public:
  
      sp_ms_deleter(): initialized_( false )
      {
      }
  
      // optimization: do not copy storage_
      sp_ms_deleter( sp_ms_deleter const & ): initialized_( false )
      {
      }
  
      ~sp_ms_deleter()
      {
          destroy();
      }
  
      void operator()( T * )
      {
          destroy();
      }
  
      void * address()
      {
          return storage_.data_;
      }
  
      void set_initialized()
      {
          initialized_ = true;
      }
  };
  
  #if defined( BOOST_HAS_RVALUE_REFS )
  template< class T > T&& forward( T &&t )
  {
      return t;
  }
  #endif
  
  } // namespace detail
  
  // Zero-argument versions
  //
  // Used even when variadic templates are available because of the new T() vs new T issue
  
  template< class T > boost::shared_ptr< T > make_shared()
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T();
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A > boost::shared_ptr< T > allocate_shared( A const & a )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T();
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  #if defined( BOOST_HAS_VARIADIC_TMPL ) && defined( BOOST_HAS_RVALUE_REFS )
  
  // Variadic templates, rvalue reference
  
  template< class T, class... Args > boost::shared_ptr< T > make_shared( Args && ... args )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( detail::forward<Args>( args )... );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class... Args > boost::shared_ptr< T > allocate_shared( A const & a, Args && ... args )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( detail::forward<Args>( args )... );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  #else
  
  // C++03 version
  
  template< class T, class A1 >
  boost::shared_ptr< T > make_shared( A1 const & a1 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3, class A4 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3, class A4 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3, class A4, class A5 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3, class A4, class A5 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3, class A4, class A5, class A6 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 >
  boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8, A9 const & a9 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 >
  boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8, A9 const & a9 )
  {
      boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
  
      detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
  
      void * pv = pd->address();
  
      ::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 );
      pd->set_initialized();
  
      T * pt2 = static_cast< T* >( pv );
  
      boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 );
      return boost::shared_ptr< T >( pt, pt2 );
  }
  
  #endif
  
  } // namespace boost
  
  #endif // #ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED
  