diff --git a/boost/smart_ptr/shared_ptr.hpp b/boost/smart_ptr/shared_ptr.hpp
new file mode 100644
index 0000000..d750308
--- /dev/null
+++ b/boost/smart_ptr/shared_ptr.hpp
@@ -0,0 +1,1035 @@
+#ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED
+#define BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED
+
+//
+//  shared_ptr.hpp
+//
+//  (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+//  Copyright (c) 2001-2008 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/shared_ptr.htm for documentation.
+//
+
+#include <boost/config.hpp>   // for broken compiler workarounds
+
+#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+#include <boost/smart_ptr/detail/shared_ptr_nmt.hpp>
+#else
+
+// In order to avoid circular dependencies with Boost.TR1
+// we make sure that our include of <memory> doesn't try to
+// pull in the TR1 headers: that's why we use this header 
+// rather than including <memory> directly:
+#include <boost/config/no_tr1/memory.hpp>  // std::auto_ptr
+
+#include <boost/assert.hpp>
+#include <boost/checked_delete.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/smart_ptr/detail/shared_count.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/smart_ptr/detail/sp_convertible.hpp>
+#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
+
+#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
+#include <boost/smart_ptr/detail/spinlock_pool.hpp>
+#include <boost/memory_order.hpp>
+#endif
+
+#include <algorithm>            // for std::swap
+#include <functional>           // for std::less
+#include <typeinfo>             // for std::bad_cast
+#include <cstddef>              // for std::size_t
+
+#if !defined(BOOST_NO_IOSTREAM)
+#if !defined(BOOST_NO_IOSFWD)
+#include <iosfwd>               // for std::basic_ostream
+#else
+#include <ostream>
+#endif
+#endif
+
+namespace ndnboost
+{
+
+template<class T> class shared_ptr;
+template<class T> class weak_ptr;
+template<class T> class enable_shared_from_this;
+class enable_shared_from_raw;
+
+namespace detail
+{
+
+// sp_element, element_type
+
+template< class T > struct sp_element
+{
+    typedef T type;
+};
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T > struct sp_element< T[] >
+{
+    typedef T type;
+};
+
+#if !defined( __BORLANDC__ ) || !BOOST_WORKAROUND( __BORLANDC__, < 0x600 )
+
+template< class T, std::size_t N > struct sp_element< T[N] >
+{
+    typedef T type;
+};
+
+#endif
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+// sp_dereference, return type of operator*
+
+template< class T > struct sp_dereference
+{
+    typedef T & type;
+};
+
+template<> struct sp_dereference< void >
+{
+    typedef void type;
+};
+
+#if !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
+
+template<> struct sp_dereference< void const >
+{
+    typedef void type;
+};
+
+template<> struct sp_dereference< void volatile >
+{
+    typedef void type;
+};
+
+template<> struct sp_dereference< void const volatile >
+{
+    typedef void type;
+};
+
+#endif // !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T > struct sp_dereference< T[] >
+{
+    typedef void type;
+};
+
+#if !defined( __BORLANDC__ ) || !BOOST_WORKAROUND( __BORLANDC__, < 0x600 )
+
+template< class T, std::size_t N > struct sp_dereference< T[N] >
+{
+    typedef void type;
+};
+
+#endif
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+// sp_member_access, return type of operator->
+
+template< class T > struct sp_member_access
+{
+    typedef T * type;
+};
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T > struct sp_member_access< T[] >
+{
+    typedef void type;
+};
+
+#if !defined( __BORLANDC__ ) || !BOOST_WORKAROUND( __BORLANDC__, < 0x600 )
+
+template< class T, std::size_t N > struct sp_member_access< T[N] >
+{
+    typedef void type;
+};
+
+#endif
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+// sp_array_access, return type of operator[]
+
+template< class T > struct sp_array_access
+{
+    typedef void type;
+};
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T > struct sp_array_access< T[] >
+{
+    typedef T & type;
+};
+
+#if !defined( __BORLANDC__ ) || !BOOST_WORKAROUND( __BORLANDC__, < 0x600 )
+
+template< class T, std::size_t N > struct sp_array_access< T[N] >
+{
+    typedef T & type;
+};
+
+#endif
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+// sp_extent, for operator[] index check
+
+template< class T > struct sp_extent
+{
+    enum _vt { value = 0 };
+};
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T, std::size_t N > struct sp_extent< T[N] >
+{
+    enum _vt { value = N };
+};
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+// enable_shared_from_this support
+
+template< class X, class Y, class T > inline void sp_enable_shared_from_this( ndnboost::shared_ptr<X> const * ppx, Y const * py, ndnboost::enable_shared_from_this< T > const * pe )
+{
+    if( pe != 0 )
+    {
+        pe->_internal_accept_owner( ppx, const_cast< Y* >( py ) );
+    }
+}
+
+template< class X, class Y > inline void sp_enable_shared_from_this( ndnboost::shared_ptr<X> * ppx, Y const * py, ndnboost::enable_shared_from_raw const * pe );
+
+#ifdef _MANAGED
+
+// Avoid C4793, ... causes native code generation
+
+struct sp_any_pointer
+{
+    template<class T> sp_any_pointer( T* ) {}
+};
+
+inline void sp_enable_shared_from_this( sp_any_pointer, sp_any_pointer, sp_any_pointer )
+{
+}
+
+#else // _MANAGED
+
+inline void sp_enable_shared_from_this( ... )
+{
+}
+
+#endif // _MANAGED
+
+#if !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) && !defined( BOOST_NO_AUTO_PTR )
+
+// rvalue auto_ptr support based on a technique by Dave Abrahams
+
+template< class T, class R > struct sp_enable_if_auto_ptr
+{
+};
+
+template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
+{
+    typedef R type;
+}; 
+
+#endif
+
+// sp_assert_convertible
+
+template< class Y, class T > inline void sp_assert_convertible()
+{
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    // static_assert( sp_convertible< Y, T >::value );
+    typedef char tmp[ sp_convertible< Y, T >::value? 1: -1 ];
+    (void)sizeof( tmp );
+
+#else
+
+    T* p = static_cast< Y* >( 0 );
+    (void)p;
+
+#endif
+}
+
+// pointer constructor helper
+
+template< class T, class Y > inline void sp_pointer_construct( ndnboost::shared_ptr< T > * ppx, Y * p, ndnboost::detail::shared_count & pn )
+{
+    ndnboost::detail::shared_count( p ).swap( pn );
+    ndnboost::detail::sp_enable_shared_from_this( ppx, p, p );
+}
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T, class Y > inline void sp_pointer_construct( ndnboost::shared_ptr< T[] > * /*ppx*/, Y * p, ndnboost::detail::shared_count & pn )
+{
+    sp_assert_convertible< Y[], T[] >();
+    ndnboost::detail::shared_count( p, ndnboost::checked_array_deleter< T >() ).swap( pn );
+}
+
+template< class T, std::size_t N, class Y > inline void sp_pointer_construct( ndnboost::shared_ptr< T[N] > * /*ppx*/, Y * p, ndnboost::detail::shared_count & pn )
+{
+    sp_assert_convertible< Y[N], T[N] >();
+    ndnboost::detail::shared_count( p, ndnboost::checked_array_deleter< T >() ).swap( pn );
+}
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+// deleter constructor helper
+
+template< class T, class Y > inline void sp_deleter_construct( ndnboost::shared_ptr< T > * ppx, Y * p )
+{
+    ndnboost::detail::sp_enable_shared_from_this( ppx, p, p );
+}
+
+#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+template< class T, class Y > inline void sp_deleter_construct( ndnboost::shared_ptr< T[] > * /*ppx*/, Y * /*p*/ )
+{
+    sp_assert_convertible< Y[], T[] >();
+}
+
+template< class T, std::size_t N, class Y > inline void sp_deleter_construct( ndnboost::shared_ptr< T[N] > * /*ppx*/, Y * /*p*/ )
+{
+    sp_assert_convertible< Y[N], T[N] >();
+}
+
+#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+} // namespace detail
+
+
+//
+//  shared_ptr
+//
+//  An enhanced relative of scoped_ptr with reference counted copy semantics.
+//  The object pointed to is deleted when the last shared_ptr pointing to it
+//  is destroyed or reset.
+//
+
+template<class T> class shared_ptr
+{
+private:
+
+    // Borland 5.5.1 specific workaround
+    typedef shared_ptr<T> this_type;
+
+public:
+
+    typedef typename ndnboost::detail::sp_element< T >::type element_type;
+
+    shared_ptr() BOOST_NOEXCEPT : px( 0 ), pn() // never throws in 1.30+
+    {
+    }
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+    shared_ptr( ndnboost::detail::sp_nullptr_t ) BOOST_NOEXCEPT : px( 0 ), pn() // never throws
+    {
+    }
+
+#endif
+
+    template<class Y>
+    explicit shared_ptr( Y * p ): px( p ), pn() // Y must be complete
+    {
+        ndnboost::detail::sp_pointer_construct( this, p, pn );
+    }
+
+    //
+    // Requirements: D's copy constructor must not throw
+    //
+    // shared_ptr will release p by calling d(p)
+    //
+
+    template<class Y, class D> shared_ptr( Y * p, D d ): px( p ), pn( p, d )
+    {
+        ndnboost::detail::sp_deleter_construct( this, p );
+    }
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+    template<class D> shared_ptr( ndnboost::detail::sp_nullptr_t p, D d ): px( p ), pn( p, d )
+    {
+    }
+
+#endif
+
+    // As above, but with allocator. A's copy constructor shall not throw.
+
+    template<class Y, class D, class A> shared_ptr( Y * p, D d, A a ): px( p ), pn( p, d, a )
+    {
+        ndnboost::detail::sp_deleter_construct( this, p );
+    }
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+    template<class D, class A> shared_ptr( ndnboost::detail::sp_nullptr_t p, D d, A a ): px( p ), pn( p, d, a )
+    {
+    }
+
+#endif
+
+//  generated copy constructor, destructor are fine...
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+// ... except in C++0x, move disables the implicit copy
+
+    shared_ptr( shared_ptr const & r ) BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+    }
+
+#endif
+
+    template<class Y>
+    explicit shared_ptr( weak_ptr<Y> const & r ): pn( r.pn ) // may throw
+    {
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+
+        // it is now safe to copy r.px, as pn(r.pn) did not throw
+        px = r.px;
+    }
+
+    template<class Y>
+    shared_ptr( weak_ptr<Y> const & r, ndnboost::detail::sp_nothrow_tag )
+    BOOST_NOEXCEPT : px( 0 ), pn( r.pn, ndnboost::detail::sp_nothrow_tag() )
+    {
+        if( !pn.empty() )
+        {
+            px = r.px;
+        }
+    }
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    shared_ptr( shared_ptr<Y> const & r, typename ndnboost::detail::sp_enable_if_convertible<Y,T>::type = ndnboost::detail::sp_empty() )
+
+#else
+
+    shared_ptr( shared_ptr<Y> const & r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+    {
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+    }
+
+    // aliasing
+    template< class Y >
+    shared_ptr( shared_ptr<Y> const & r, element_type * p ) BOOST_NOEXCEPT : px( p ), pn( r.pn )
+    {
+    }
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    template<class Y>
+    explicit shared_ptr( std::auto_ptr<Y> & r ): px(r.get()), pn()
+    {
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+
+        Y * tmp = r.get();
+        pn = ndnboost::detail::shared_count( r );
+
+        ndnboost::detail::sp_deleter_construct( this, tmp );
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    template<class Y>
+    shared_ptr( std::auto_ptr<Y> && r ): px(r.get()), pn()
+    {
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+
+        Y * tmp = r.get();
+        pn = ndnboost::detail::shared_count( r );
+
+        ndnboost::detail::sp_deleter_construct( this, tmp );
+    }
+
+#elif !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+    template<class Ap>
+    explicit shared_ptr( Ap r, typename ndnboost::detail::sp_enable_if_auto_ptr<Ap, int>::type = 0 ): px( r.get() ), pn()
+    {
+        typedef typename Ap::element_type Y;
+
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+
+        Y * tmp = r.get();
+        pn = ndnboost::detail::shared_count( r );
+
+        ndnboost::detail::sp_deleter_construct( this, tmp );
+    }
+
+#endif // BOOST_NO_SFINAE, BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+#endif // BOOST_NO_AUTO_PTR
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+
+    template< class Y, class D >
+    shared_ptr( std::unique_ptr< Y, D > && r ): px( r.get() ), pn()
+    {
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+
+        typename std::unique_ptr< Y, D >::pointer tmp = r.get();
+        pn = ndnboost::detail::shared_count( r );
+
+        ndnboost::detail::sp_deleter_construct( this, tmp );
+    }
+
+#endif
+
+    // assignment
+
+    shared_ptr & operator=( shared_ptr const & r ) BOOST_NOEXCEPT
+    {
+        this_type(r).swap(*this);
+        return *this;
+    }
+
+#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1400)
+
+    template<class Y>
+    shared_ptr & operator=(shared_ptr<Y> const & r) BOOST_NOEXCEPT
+    {
+        this_type(r).swap(*this);
+        return *this;
+    }
+
+#endif
+
+#ifndef BOOST_NO_AUTO_PTR
+
+    template<class Y>
+    shared_ptr & operator=( std::auto_ptr<Y> & r )
+    {
+        this_type( r ).swap( *this );
+        return *this;
+    }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    template<class Y>
+    shared_ptr & operator=( std::auto_ptr<Y> && r )
+    {
+        this_type( static_cast< std::auto_ptr<Y> && >( r ) ).swap( *this );
+        return *this;
+    }
+
+#elif !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
+
+    template<class Ap>
+    typename ndnboost::detail::sp_enable_if_auto_ptr< Ap, shared_ptr & >::type operator=( Ap r )
+    {
+        this_type( r ).swap( *this );
+        return *this;
+    }
+
+#endif // BOOST_NO_SFINAE, BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+#endif // BOOST_NO_AUTO_PTR
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR )
+
+    template<class Y, class D>
+    shared_ptr & operator=( std::unique_ptr<Y, D> && r )
+    {
+        this_type( static_cast< std::unique_ptr<Y, D> && >( r ) ).swap(*this);
+        return *this;
+    }
+
+#endif
+
+// Move support
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    shared_ptr( shared_ptr && r ) BOOST_NOEXCEPT : px( r.px ), pn()
+    {
+        pn.swap( r.pn );
+        r.px = 0;
+    }
+
+    template<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+    shared_ptr( shared_ptr<Y> && r, typename ndnboost::detail::sp_enable_if_convertible<Y,T>::type = ndnboost::detail::sp_empty() )
+
+#else
+
+    shared_ptr( shared_ptr<Y> && r )
+
+#endif
+    BOOST_NOEXCEPT : px( r.px ), pn()
+    {
+        ndnboost::detail::sp_assert_convertible< Y, T >();
+
+        pn.swap( r.pn );
+        r.px = 0;
+    }
+
+    shared_ptr & operator=( shared_ptr && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< shared_ptr && >( r ) ).swap( *this );
+        return *this;
+    }
+
+    template<class Y>
+    shared_ptr & operator=( shared_ptr<Y> && r ) BOOST_NOEXCEPT
+    {
+        this_type( static_cast< shared_ptr<Y> && >( r ) ).swap( *this );
+        return *this;
+    }
+
+#endif
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+    shared_ptr & operator=( ndnboost::detail::sp_nullptr_t ) BOOST_NOEXCEPT // never throws
+    {
+        this_type().swap(*this);
+        return *this;
+    }
+
+#endif
+
+    void reset() BOOST_NOEXCEPT // never throws in 1.30+
+    {
+        this_type().swap(*this);
+    }
+
+    template<class Y> void reset( Y * p ) // Y must be complete
+    {
+        BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
+        this_type( p ).swap( *this );
+    }
+
+    template<class Y, class D> void reset( Y * p, D d )
+    {
+        this_type( p, d ).swap( *this );
+    }
+
+    template<class Y, class D, class A> void reset( Y * p, D d, A a )
+    {
+        this_type( p, d, a ).swap( *this );
+    }
+
+    template<class Y> void reset( shared_ptr<Y> const & r, element_type * p )
+    {
+        this_type( r, p ).swap( *this );
+    }
+    
+    // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+    typename ndnboost::detail::sp_dereference< T >::type operator* () const
+    {
+        BOOST_ASSERT( px != 0 );
+        return *px;
+    }
+    
+    // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+    typename ndnboost::detail::sp_member_access< T >::type operator-> () const 
+    {
+        BOOST_ASSERT( px != 0 );
+        return px;
+    }
+    
+    // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+    typename ndnboost::detail::sp_array_access< T >::type operator[] ( std::ptrdiff_t i ) const
+    {
+        BOOST_ASSERT( px != 0 );
+        BOOST_ASSERT( i >= 0 && ( i < ndnboost::detail::sp_extent< T >::value || ndnboost::detail::sp_extent< T >::value == 0 ) );
+
+        return px[ i ];
+    }
+
+    element_type * get() const BOOST_NOEXCEPT
+    {
+        return px;
+    }
+
+// implicit conversion to "bool"
+#include <boost/smart_ptr/detail/operator_bool.hpp>
+
+    bool unique() const BOOST_NOEXCEPT
+    {
+        return pn.unique();
+    }
+
+    long use_count() const BOOST_NOEXCEPT
+    {
+        return pn.use_count();
+    }
+
+    void swap( shared_ptr & other ) BOOST_NOEXCEPT
+    {
+        std::swap(px, other.px);
+        pn.swap(other.pn);
+    }
+
+    template<class Y> bool owner_before( shared_ptr<Y> const & rhs ) const BOOST_NOEXCEPT
+    {
+        return pn < rhs.pn;
+    }
+
+    template<class Y> bool owner_before( weak_ptr<Y> const & rhs ) const BOOST_NOEXCEPT
+    {
+        return pn < rhs.pn;
+    }
+
+    void * _internal_get_deleter( ndnboost::detail::sp_typeinfo const & ti ) const BOOST_NOEXCEPT
+    {
+        return pn.get_deleter( ti );
+    }
+
+    void * _internal_get_untyped_deleter() const BOOST_NOEXCEPT
+    {
+        return pn.get_untyped_deleter();
+    }
+
+    bool _internal_equiv( shared_ptr const & r ) const BOOST_NOEXCEPT
+    {
+        return px == r.px && pn == r.pn;
+    }
+
+// Tasteless as this may seem, making all members public allows member templates
+// to work in the absence of member template friends. (Matthew Langston)
+
+#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+
+private:
+
+    template<class Y> friend class shared_ptr;
+    template<class Y> friend class weak_ptr;
+
+
+#endif
+
+    element_type * px;                 // contained pointer
+    ndnboost::detail::shared_count pn;    // reference counter
+
+};  // shared_ptr
+
+template<class T, class U> inline bool operator==(shared_ptr<T> const & a, shared_ptr<U> const & b) BOOST_NOEXCEPT
+{
+    return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<U> const & b) BOOST_NOEXCEPT
+{
+    return a.get() != b.get();
+}
+
+#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96
+
+// Resolve the ambiguity between our op!= and the one in rel_ops
+
+template<class T> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<T> const & b) BOOST_NOEXCEPT
+{
+    return a.get() != b.get();
+}
+
+#endif
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+template<class T> inline bool operator==( shared_ptr<T> const & p, ndnboost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator==( ndnboost::detail::sp_nullptr_t, shared_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() == 0;
+}
+
+template<class T> inline bool operator!=( shared_ptr<T> const & p, ndnboost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+template<class T> inline bool operator!=( ndnboost::detail::sp_nullptr_t, shared_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return p.get() != 0;
+}
+
+#endif
+
+template<class T, class U> inline bool operator<(shared_ptr<T> const & a, shared_ptr<U> const & b) BOOST_NOEXCEPT
+{
+    return a.owner_before( b );
+}
+
+template<class T> inline void swap(shared_ptr<T> & a, shared_ptr<T> & b) BOOST_NOEXCEPT
+{
+    a.swap(b);
+}
+
+template<class T, class U> shared_ptr<T> static_pointer_cast( shared_ptr<U> const & r ) BOOST_NOEXCEPT
+{
+    (void) static_cast< T* >( static_cast< U* >( 0 ) );
+
+    typedef typename shared_ptr<T>::element_type E;
+
+    E * p = static_cast< E* >( r.get() );
+    return shared_ptr<T>( r, p );
+}
+
+template<class T, class U> shared_ptr<T> const_pointer_cast( shared_ptr<U> const & r ) BOOST_NOEXCEPT
+{
+    (void) const_cast< T* >( static_cast< U* >( 0 ) );
+
+    typedef typename shared_ptr<T>::element_type E;
+
+    E * p = const_cast< E* >( r.get() );
+    return shared_ptr<T>( r, p );
+}
+
+template<class T, class U> shared_ptr<T> dynamic_pointer_cast( shared_ptr<U> const & r ) BOOST_NOEXCEPT
+{
+    (void) dynamic_cast< T* >( static_cast< U* >( 0 ) );
+
+    typedef typename shared_ptr<T>::element_type E;
+
+    E * p = dynamic_cast< E* >( r.get() );
+    return p? shared_ptr<T>( r, p ): shared_ptr<T>();
+}
+
+template<class T, class U> shared_ptr<T> reinterpret_pointer_cast( shared_ptr<U> const & r ) BOOST_NOEXCEPT
+{
+    (void) reinterpret_cast< T* >( static_cast< U* >( 0 ) );
+
+    typedef typename shared_ptr<T>::element_type E;
+
+    E * p = reinterpret_cast< E* >( r.get() );
+    return shared_ptr<T>( r, p );
+}
+
+// get_pointer() enables ndnboost::mem_fn to recognize shared_ptr
+
+template<class T> inline typename shared_ptr<T>::element_type * get_pointer(shared_ptr<T> const & p) BOOST_NOEXCEPT
+{
+    return p.get();
+}
+
+// operator<<
+
+#if !defined(BOOST_NO_IOSTREAM)
+
+#if defined(BOOST_NO_TEMPLATED_IOSTREAMS) || ( defined(__GNUC__) &&  (__GNUC__ < 3) )
+
+template<class Y> std::ostream & operator<< (std::ostream & os, shared_ptr<Y> const & p)
+{
+    os << p.get();
+    return os;
+}
+
+#else
+
+// in STLport's no-iostreams mode no iostream symbols can be used
+#ifndef _STLP_NO_IOSTREAMS
+
+# if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, < 1300 && __SGI_STL_PORT)
+// MSVC6 has problems finding std::basic_ostream through the using declaration in namespace _STL
+using std::basic_ostream;
+template<class E, class T, class Y> basic_ostream<E, T> & operator<< (basic_ostream<E, T> & os, shared_ptr<Y> const & p)
+# else
+template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, shared_ptr<Y> const & p)
+# endif
+{
+    os << p.get();
+    return os;
+}
+
+#endif // _STLP_NO_IOSTREAMS
+
+#endif // __GNUC__ < 3
+
+#endif // !defined(BOOST_NO_IOSTREAM)
+
+// get_deleter
+
+namespace detail
+{
+
+#if ( defined(__GNUC__) && BOOST_WORKAROUND(__GNUC__, < 3) ) || \
+    ( defined(__EDG_VERSION__) && BOOST_WORKAROUND(__EDG_VERSION__, <= 238) ) || \
+    ( defined(__HP_aCC) && BOOST_WORKAROUND(__HP_aCC, <= 33500) )
+
+// g++ 2.9x doesn't allow static_cast<X const *>(void *)
+// apparently EDG 2.38 and HP aCC A.03.35 also don't accept it
+
+template<class D, class T> D * basic_get_deleter(shared_ptr<T> const & p)
+{
+    void const * q = p._internal_get_deleter(BOOST_SP_TYPEID(D));
+    return const_cast<D *>(static_cast<D const *>(q));
+}
+
+#else
+
+template<class D, class T> D * basic_get_deleter( shared_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return static_cast<D *>( p._internal_get_deleter(BOOST_SP_TYPEID(D)) );
+}
+
+#endif
+
+class esft2_deleter_wrapper
+{
+private:
+
+    shared_ptr<void> deleter_;
+
+public:
+
+    esft2_deleter_wrapper()
+    {
+    }
+
+    template< class T > void set_deleter( shared_ptr<T> const & deleter )
+    {
+        deleter_ = deleter;
+    }
+
+    template<typename D> D* get_deleter() const BOOST_NOEXCEPT
+    {
+        return ndnboost::detail::basic_get_deleter<D>( deleter_ );
+    }
+
+    template< class T> void operator()( T* )
+    {
+        BOOST_ASSERT( deleter_.use_count() <= 1 );
+        deleter_.reset();
+    }
+};
+
+} // namespace detail
+
+template<class D, class T> D * get_deleter( shared_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    D *del = ndnboost::detail::basic_get_deleter<D>(p);
+
+    if(del == 0)
+    {
+        ndnboost::detail::esft2_deleter_wrapper *del_wrapper = ndnboost::detail::basic_get_deleter<ndnboost::detail::esft2_deleter_wrapper>(p);
+// The following get_deleter method call is fully qualified because
+// older versions of gcc (2.95, 3.2.3) fail to compile it when written del_wrapper->get_deleter<D>()
+        if(del_wrapper) del = del_wrapper->::ndnboost::detail::esft2_deleter_wrapper::get_deleter<D>();
+    }
+
+    return del;
+}
+
+// atomic access
+
+#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
+
+template<class T> inline bool atomic_is_lock_free( shared_ptr<T> const * /*p*/ ) BOOST_NOEXCEPT
+{
+    return false;
+}
+
+template<class T> shared_ptr<T> atomic_load( shared_ptr<T> const * p )
+{
+    ndnboost::detail::spinlock_pool<2>::scoped_lock lock( p );
+    return *p;
+}
+
+template<class T> inline shared_ptr<T> atomic_load_explicit( shared_ptr<T> const * p, memory_order /*mo*/ )
+{
+    return atomic_load( p );
+}
+
+template<class T> void atomic_store( shared_ptr<T> * p, shared_ptr<T> r )
+{
+    ndnboost::detail::spinlock_pool<2>::scoped_lock lock( p );
+    p->swap( r );
+}
+
+template<class T> inline void atomic_store_explicit( shared_ptr<T> * p, shared_ptr<T> r, memory_order /*mo*/ )
+{
+    atomic_store( p, r ); // std::move( r )
+}
+
+template<class T> shared_ptr<T> atomic_exchange( shared_ptr<T> * p, shared_ptr<T> r )
+{
+    ndnboost::detail::spinlock & sp = ndnboost::detail::spinlock_pool<2>::spinlock_for( p );
+
+    sp.lock();
+    p->swap( r );
+    sp.unlock();
+
+    return r; // return std::move( r )
+}
+
+template<class T> shared_ptr<T> atomic_exchange_explicit( shared_ptr<T> * p, shared_ptr<T> r, memory_order /*mo*/ )
+{
+    return atomic_exchange( p, r ); // std::move( r )
+}
+
+template<class T> bool atomic_compare_exchange( shared_ptr<T> * p, shared_ptr<T> * v, shared_ptr<T> w )
+{
+    ndnboost::detail::spinlock & sp = ndnboost::detail::spinlock_pool<2>::spinlock_for( p );
+
+    sp.lock();
+
+    if( p->_internal_equiv( *v ) )
+    {
+        p->swap( w );
+
+        sp.unlock();
+
+        return true;
+    }
+    else
+    {
+        shared_ptr<T> tmp( *p );
+
+        sp.unlock();
+
+        tmp.swap( *v );
+        return false;
+    }
+}
+
+template<class T> inline bool atomic_compare_exchange_explicit( shared_ptr<T> * p, shared_ptr<T> * v, shared_ptr<T> w, memory_order /*success*/, memory_order /*failure*/ )
+{
+    return atomic_compare_exchange( p, v, w ); // std::move( w )
+}
+
+#endif // !defined(BOOST_SP_NO_ATOMIC_ACCESS)
+
+// hash_value
+
+template< class T > struct hash;
+
+template< class T > std::size_t hash_value( ndnboost::shared_ptr<T> const & p ) BOOST_NOEXCEPT
+{
+    return ndnboost::hash< T* >()( p.get() );
+}
+
+} // namespace ndnboost
+
+#endif  // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+
+#endif  // #ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED