/usr/include/boost/smart_ptr
Edit: /usr/include/boost/smart_ptr/shared_ptr.hpp (31199B)
#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/ for documentation.
//
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
#include
#endif
#include // for std::swap
#include // for std::less
#include // for std::bad_cast
#include // for std::size_t
#include // for std::auto_ptr
#if !defined(BOOST_NO_IOSTREAM)
#if !defined(BOOST_NO_IOSFWD)
#include // for std::basic_ostream
#else
#include
#endif
#endif
#if defined( BOOST_SP_DISABLE_DEPRECATED )
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
namespace boost
{
template class shared_ptr;
template class weak_ptr;
template class enable_shared_from_this;
class enable_shared_from_raw;
namespace movelib
{
template< class T, class D > class unique_ptr;
} // namespace movelib
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( BOOST_BORLANDC ) || !BOOST_WORKAROUND( BOOST_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( BOOST_BORLANDC ) || !BOOST_WORKAROUND( BOOST_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( BOOST_BORLANDC ) || !BOOST_WORKAROUND( BOOST_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( BOOST_BORLANDC ) || !BOOST_WORKAROUND( BOOST_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( boost::shared_ptr const * ppx, Y const * py, boost::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( boost::shared_ptr * ppx, Y const * py, boost::enable_shared_from_raw const * pe );
#ifdef _MANAGED
// Avoid C4793, ... causes native code generation
struct sp_any_pointer
{
template 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() BOOST_SP_NOEXCEPT
{
#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( boost::shared_ptr< T > * ppx, Y * p, boost::detail::shared_count & pn )
{
boost::detail::shared_count( p ).swap( pn );
boost::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( boost::shared_ptr< T[] > * /*ppx*/, Y * p, boost::detail::shared_count & pn )
{
sp_assert_convertible< Y[], T[] >();
boost::detail::shared_count( p, boost::checked_array_deleter< T >() ).swap( pn );
}
template< class T, std::size_t N, class Y > inline void sp_pointer_construct( boost::shared_ptr< T[N] > * /*ppx*/, Y * p, boost::detail::shared_count & pn )
{
sp_assert_convertible< Y[N], T[N] >();
boost::detail::shared_count( p, boost::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( boost::shared_ptr< T > * ppx, Y * p )
{
boost::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( boost::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( boost::shared_ptr< T[N] > * /*ppx*/, Y * /*p*/ )
{
sp_assert_convertible< Y[N], T[N] >();
}
#endif // !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
struct sp_internal_constructor_tag
{
};
} // 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 shared_ptr
{
private:
// Borland 5.5.1 specific workaround
typedef shared_ptr this_type;
public:
typedef typename boost::detail::sp_element< T >::type element_type;
BOOST_CONSTEXPR shared_ptr() BOOST_SP_NOEXCEPT : px( 0 ), pn()
{
}
#if !defined( BOOST_NO_CXX11_NULLPTR )
BOOST_CONSTEXPR shared_ptr( boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT : px( 0 ), pn()
{
}
#endif
BOOST_CONSTEXPR shared_ptr( boost::detail::sp_internal_constructor_tag, element_type * px_, boost::detail::shared_count const & pn_ ) BOOST_SP_NOEXCEPT : px( px_ ), pn( pn_ )
{
}
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
BOOST_CONSTEXPR shared_ptr( boost::detail::sp_internal_constructor_tag, element_type * px_, boost::detail::shared_count && pn_ ) BOOST_SP_NOEXCEPT : px( px_ ), pn( std::move( pn_ ) )
{
}
#endif
template
explicit shared_ptr( Y * p ): px( p ), pn() // Y must be complete
{
boost::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 shared_ptr( Y * p, D d ): px( p ), pn( p, d )
{
boost::detail::sp_deleter_construct( this, p );
}
#if !defined( BOOST_NO_CXX11_NULLPTR )
template shared_ptr( boost::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 shared_ptr( Y * p, D d, A a ): px( p ), pn( p, d, a )
{
boost::detail::sp_deleter_construct( this, p );
}
#if !defined( BOOST_NO_CXX11_NULLPTR )
template shared_ptr( boost::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_SP_NOEXCEPT : px( r.px ), pn( r.pn )
{
}
#endif
template
explicit shared_ptr( weak_ptr const & r ): pn( r.pn ) // may throw
{
boost::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
shared_ptr( weak_ptr const & r, boost::detail::sp_nothrow_tag )
BOOST_SP_NOEXCEPT : px( 0 ), pn( r.pn, boost::detail::sp_nothrow_tag() )
{
if( !pn.empty() )
{
px = r.px;
}
}
template
#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
shared_ptr( shared_ptr const & r, typename boost::detail::sp_enable_if_convertible::type = boost::detail::sp_empty() )
#else
shared_ptr( shared_ptr const & r )
#endif
BOOST_SP_NOEXCEPT : px( r.px ), pn( r.pn )
{
boost::detail::sp_assert_convertible< Y, T >();
}
// aliasing
template< class Y >
shared_ptr( shared_ptr const & r, element_type * p ) BOOST_SP_NOEXCEPT : px( p ), pn( r.pn )
{
}
#ifndef BOOST_NO_AUTO_PTR
template
explicit shared_ptr( std::auto_ptr & r ): px(r.get()), pn()
{
boost::detail::sp_assert_convertible< Y, T >();
Y * tmp = r.get();
pn = boost::detail::shared_count( r );
boost::detail::sp_deleter_construct( this, tmp );
}
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template
shared_ptr( std::auto_ptr && r ): px(r.get()), pn()
{
boost::detail::sp_assert_convertible< Y, T >();
Y * tmp = r.get();
pn = boost::detail::shared_count( r );
boost::detail::sp_deleter_construct( this, tmp );
}
#elif !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
template
explicit shared_ptr( Ap r, typename boost::detail::sp_enable_if_auto_ptr::type = 0 ): px( r.get() ), pn()
{
typedef typename Ap::element_type Y;
boost::detail::sp_assert_convertible< Y, T >();
Y * tmp = r.get();
pn = boost::detail::shared_count( r );
boost::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 ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template< class Y, class D >
shared_ptr( std::unique_ptr< Y, D > && r ): px( r.get() ), pn()
{
boost::detail::sp_assert_convertible< Y, T >();
typename std::unique_ptr< Y, D >::pointer tmp = r.get();
if( tmp != 0 )
{
pn = boost::detail::shared_count( r );
boost::detail::sp_deleter_construct( this, tmp );
}
}
#endif
template< class Y, class D >
shared_ptr( boost::movelib::unique_ptr< Y, D > r ): px( r.get() ), pn()
{
boost::detail::sp_assert_convertible< Y, T >();
typename boost::movelib::unique_ptr< Y, D >::pointer tmp = r.get();
if( tmp != 0 )
{
pn = boost::detail::shared_count( r );
boost::detail::sp_deleter_construct( this, tmp );
}
}
// assignment
shared_ptr & operator=( shared_ptr const & r ) BOOST_SP_NOEXCEPT
{
this_type(r).swap(*this);
return *this;
}
#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1400)
template
shared_ptr & operator=(shared_ptr const & r) BOOST_SP_NOEXCEPT
{
this_type(r).swap(*this);
return *this;
}
#endif
#ifndef BOOST_NO_AUTO_PTR
template
shared_ptr & operator=( std::auto_ptr & r )
{
this_type( r ).swap( *this );
return *this;
}
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template
shared_ptr & operator=( std::auto_ptr && r )
{
this_type( static_cast< std::auto_ptr && >( r ) ).swap( *this );
return *this;
}
#elif !defined( BOOST_NO_SFINAE ) && !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
template
typename boost::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 ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template
shared_ptr & operator=( std::unique_ptr && r )
{
this_type( static_cast< std::unique_ptr && >( r ) ).swap(*this);
return *this;
}
#endif
template
shared_ptr & operator=( boost::movelib::unique_ptr r )
{
// this_type( static_cast< unique_ptr && >( r ) ).swap( *this );
boost::detail::sp_assert_convertible< Y, T >();
typename boost::movelib::unique_ptr< Y, D >::pointer p = r.get();
shared_ptr tmp;
if( p != 0 )
{
tmp.px = p;
tmp.pn = boost::detail::shared_count( r );
boost::detail::sp_deleter_construct( &tmp, p );
}
tmp.swap( *this );
return *this;
}
// Move support
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
shared_ptr( shared_ptr && r ) BOOST_SP_NOEXCEPT : px( r.px ), pn()
{
pn.swap( r.pn );
r.px = 0;
}
template
#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
shared_ptr( shared_ptr && r, typename boost::detail::sp_enable_if_convertible::type = boost::detail::sp_empty() )
#else
shared_ptr( shared_ptr && r )
#endif
BOOST_SP_NOEXCEPT : px( r.px ), pn()
{
boost::detail::sp_assert_convertible< Y, T >();
pn.swap( r.pn );
r.px = 0;
}
shared_ptr & operator=( shared_ptr && r ) BOOST_SP_NOEXCEPT
{
this_type( static_cast< shared_ptr && >( r ) ).swap( *this );
return *this;
}
template
shared_ptr & operator=( shared_ptr && r ) BOOST_SP_NOEXCEPT
{
this_type( static_cast< shared_ptr && >( r ) ).swap( *this );
return *this;
}
// aliasing move
template
shared_ptr( shared_ptr && r, element_type * p ) BOOST_SP_NOEXCEPT : px( p ), pn()
{
pn.swap( r.pn );
r.px = 0;
}
#endif
#if !defined( BOOST_NO_CXX11_NULLPTR )
shared_ptr & operator=( boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
{
this_type().swap(*this);
return *this;
}
#endif
void reset() BOOST_SP_NOEXCEPT
{
this_type().swap(*this);
}
template void reset( Y * p ) // Y must be complete
{
BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
this_type( p ).swap( *this );
}
template void reset( Y * p, D d )
{
this_type( p, d ).swap( *this );
}
template void reset( Y * p, D d, A a )
{
this_type( p, d, a ).swap( *this );
}
template void reset( shared_ptr const & r, element_type * p ) BOOST_SP_NOEXCEPT
{
this_type( r, p ).swap( *this );
}
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template void reset( shared_ptr && r, element_type * p ) BOOST_SP_NOEXCEPT
{
this_type( static_cast< shared_ptr && >( r ), p ).swap( *this );
}
#endif
typename boost::detail::sp_dereference< T >::type operator* () const BOOST_SP_NOEXCEPT_WITH_ASSERT
{
BOOST_ASSERT( px != 0 );
return *px;
}
typename boost::detail::sp_member_access< T >::type operator-> () const BOOST_SP_NOEXCEPT_WITH_ASSERT
{
BOOST_ASSERT( px != 0 );
return px;
}
typename boost::detail::sp_array_access< T >::type operator[] ( std::ptrdiff_t i ) const BOOST_SP_NOEXCEPT_WITH_ASSERT
{
BOOST_ASSERT( px != 0 );
BOOST_ASSERT( i >= 0 && ( i < boost::detail::sp_extent< T >::value || boost::detail::sp_extent< T >::value == 0 ) );
return static_cast< typename boost::detail::sp_array_access< T >::type >( px[ i ] );
}
element_type * get() const BOOST_SP_NOEXCEPT
{
return px;
}
// implicit conversion to "bool"
#include
bool unique() const BOOST_SP_NOEXCEPT
{
return pn.unique();
}
long use_count() const BOOST_SP_NOEXCEPT
{
return pn.use_count();
}
void swap( shared_ptr & other ) BOOST_SP_NOEXCEPT
{
std::swap(px, other.px);
pn.swap(other.pn);
}
template bool owner_before( shared_ptr const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn < rhs.pn;
}
template bool owner_before( weak_ptr const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn < rhs.pn;
}
template bool owner_equals( shared_ptr const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn == rhs.pn;
}
template bool owner_equals( weak_ptr const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn == rhs.pn;
}
std::size_t owner_hash_value() const BOOST_SP_NOEXCEPT
{
return pn.hash_value();
}
void * _internal_get_deleter( boost::detail::sp_typeinfo_ const & ti ) const BOOST_SP_NOEXCEPT
{
return pn.get_deleter( ti );
}
void * _internal_get_local_deleter( boost::detail::sp_typeinfo_ const & ti ) const BOOST_SP_NOEXCEPT
{
return pn.get_local_deleter( ti );
}
void * _internal_get_untyped_deleter() const BOOST_SP_NOEXCEPT
{
return pn.get_untyped_deleter();
}
bool _internal_equiv( shared_ptr const & r ) const BOOST_SP_NOEXCEPT
{
return px == r.px && pn == r.pn;
}
boost::detail::shared_count _internal_count() const BOOST_SP_NOEXCEPT
{
return 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 friend class shared_ptr;
template friend class weak_ptr;
#endif
element_type * px; // contained pointer
boost::detail::shared_count pn; // reference counter
}; // shared_ptr
template inline bool operator==(shared_ptr const & a, shared_ptr const & b) BOOST_SP_NOEXCEPT
{
return a.get() == b.get();
}
template inline bool operator!=(shared_ptr const & a, shared_ptr const & b) BOOST_SP_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 inline bool operator!=(shared_ptr const & a, shared_ptr const & b) BOOST_SP_NOEXCEPT
{
return a.get() != b.get();
}
#endif
#if !defined( BOOST_NO_CXX11_NULLPTR )
template inline bool operator==( shared_ptr const & p, boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
{
return p.get() == 0;
}
template inline bool operator==( boost::detail::sp_nullptr_t, shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
return p.get() == 0;
}
template inline bool operator!=( shared_ptr const & p, boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
{
return p.get() != 0;
}
template inline bool operator!=( boost::detail::sp_nullptr_t, shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
return p.get() != 0;
}
#endif
template inline bool operator<(shared_ptr const & a, shared_ptr const & b) BOOST_SP_NOEXCEPT
{
return a.owner_before( b );
}
template inline void swap(shared_ptr & a, shared_ptr & b) BOOST_SP_NOEXCEPT
{
a.swap(b);
}
template shared_ptr static_pointer_cast( shared_ptr const & r ) BOOST_SP_NOEXCEPT
{
(void) static_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = static_cast< E* >( r.get() );
return shared_ptr( r, p );
}
template shared_ptr const_pointer_cast( shared_ptr const & r ) BOOST_SP_NOEXCEPT
{
(void) const_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = const_cast< E* >( r.get() );
return shared_ptr( r, p );
}
template shared_ptr dynamic_pointer_cast( shared_ptr const & r ) BOOST_SP_NOEXCEPT
{
(void) dynamic_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = dynamic_cast< E* >( r.get() );
return p? shared_ptr( r, p ): shared_ptr();
}
template shared_ptr reinterpret_pointer_cast( shared_ptr const & r ) BOOST_SP_NOEXCEPT
{
(void) reinterpret_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = reinterpret_cast< E* >( r.get() );
return shared_ptr( r, p );
}
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
template shared_ptr static_pointer_cast( shared_ptr && r ) BOOST_SP_NOEXCEPT
{
(void) static_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = static_cast< E* >( r.get() );
return shared_ptr( std::move(r), p );
}
template shared_ptr const_pointer_cast( shared_ptr && r ) BOOST_SP_NOEXCEPT
{
(void) const_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = const_cast< E* >( r.get() );
return shared_ptr( std::move(r), p );
}
template shared_ptr dynamic_pointer_cast( shared_ptr && r ) BOOST_SP_NOEXCEPT
{
(void) dynamic_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = dynamic_cast< E* >( r.get() );
return p? shared_ptr( std::move(r), p ): shared_ptr();
}
template shared_ptr reinterpret_pointer_cast( shared_ptr && r ) BOOST_SP_NOEXCEPT
{
(void) reinterpret_cast< T* >( static_cast< U* >( 0 ) );
typedef typename shared_ptr::element_type E;
E * p = reinterpret_cast< E* >( r.get() );
return shared_ptr( std::move(r), p );
}
#endif // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
// get_pointer() enables boost::mem_fn to recognize shared_ptr
template inline typename shared_ptr::element_type * get_pointer(shared_ptr const & p) BOOST_SP_NOEXCEPT
{
return p.get();
}
// operator<<
#if !defined(BOOST_NO_IOSTREAM)
#if defined(BOOST_NO_TEMPLATED_IOSTREAMS) || ( defined(__GNUC__) && (__GNUC__ < 3) )
template std::ostream & operator<< (std::ostream & os, shared_ptr 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 basic_ostream & operator<< (basic_ostream & os, shared_ptr const & p)
# else
template std::basic_ostream & operator<< (std::basic_ostream & os, shared_ptr const & p)
# endif
{
os << p.get();
return os;
}
#endif // _STLP_NO_IOSTREAMS
#endif // __GNUC__ < 3
#endif // !defined(BOOST_NO_IOSTREAM)
// get_deleter
namespace detail
{
template D * basic_get_deleter( shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
return static_cast( p._internal_get_deleter(BOOST_SP_TYPEID_(D)) );
}
template D * basic_get_local_deleter( D *, shared_ptr const & p ) BOOST_SP_NOEXCEPT;
template D const * basic_get_local_deleter( D const *, shared_ptr const & p ) BOOST_SP_NOEXCEPT;
class esft2_deleter_wrapper
{
private:
shared_ptr deleter_;
public:
esft2_deleter_wrapper() BOOST_SP_NOEXCEPT
{
}
template< class T > void set_deleter( shared_ptr const & deleter ) BOOST_SP_NOEXCEPT
{
deleter_ = deleter;
}
template D* get_deleter() const BOOST_SP_NOEXCEPT
{
return boost::detail::basic_get_deleter( deleter_ );
}
template< class T> void operator()( T* ) BOOST_SP_NOEXCEPT_WITH_ASSERT
{
BOOST_ASSERT( deleter_.use_count() <= 1 );
deleter_.reset();
}
};
} // namespace detail
template D * get_deleter( shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
D * d = boost::detail::basic_get_deleter( p );
if( d == 0 )
{
d = boost::detail::basic_get_local_deleter( d, p );
}
if( d == 0 )
{
boost::detail::esft2_deleter_wrapper *del_wrapper = boost::detail::basic_get_deleter(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()
if(del_wrapper) d = del_wrapper->::boost::detail::esft2_deleter_wrapper::get_deleter();
}
return d;
}
// atomic access
#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
template inline bool atomic_is_lock_free( shared_ptr const * /*p*/ ) BOOST_SP_NOEXCEPT
{
return false;
}
template shared_ptr atomic_load( shared_ptr const * p ) BOOST_SP_NOEXCEPT
{
boost::detail::spinlock_pool<2>::scoped_lock lock( p );
return *p;
}
template inline shared_ptr atomic_load_explicit( shared_ptr const * p, /*memory_order mo*/ M ) BOOST_SP_NOEXCEPT
{
return atomic_load( p );
}
template void atomic_store( shared_ptr * p, shared_ptr r ) BOOST_SP_NOEXCEPT
{
boost::detail::spinlock_pool<2>::scoped_lock lock( p );
p->swap( r );
}
template inline void atomic_store_explicit( shared_ptr * p, shared_ptr r, /*memory_order mo*/ M ) BOOST_SP_NOEXCEPT
{
atomic_store( p, r ); // std::move( r )
}
template shared_ptr atomic_exchange( shared_ptr * p, shared_ptr r ) BOOST_SP_NOEXCEPT
{
boost::detail::spinlock & sp = boost::detail::spinlock_pool<2>::spinlock_for( p );
sp.lock();
p->swap( r );
sp.unlock();
return r; // return std::move( r )
}
template shared_ptr inline atomic_exchange_explicit( shared_ptr * p, shared_ptr r, /*memory_order mo*/ M ) BOOST_SP_NOEXCEPT
{
return atomic_exchange( p, r ); // std::move( r )
}
template bool atomic_compare_exchange( shared_ptr * p, shared_ptr * v, shared_ptr w ) BOOST_SP_NOEXCEPT
{
boost::detail::spinlock & sp = boost::detail::spinlock_pool<2>::spinlock_for( p );
sp.lock();
if( p->_internal_equiv( *v ) )
{
p->swap( w );
sp.unlock();
return true;
}
else
{
shared_ptr tmp( *p );
sp.unlock();
tmp.swap( *v );
return false;
}
}
template inline bool atomic_compare_exchange_explicit( shared_ptr * p, shared_ptr * v, shared_ptr w, /*memory_order success*/ M, /*memory_order failure*/ M ) BOOST_SP_NOEXCEPT
{
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( boost::shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
return boost::hash< typename boost::shared_ptr::element_type* >()( p.get() );
}
} // namespace boost
// std::hash
#if !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
namespace std
{
template struct hash< ::boost::shared_ptr >
{
std::size_t operator()( ::boost::shared_ptr const & p ) const BOOST_SP_NOEXCEPT
{
return std::hash< typename ::boost::shared_ptr::element_type* >()( p.get() );
}
};
} // namespace std
#endif // #if !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
#include
namespace boost
{
namespace detail
{
template D * basic_get_local_deleter( D *, shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
return static_cast( p._internal_get_local_deleter( BOOST_SP_TYPEID_(local_sp_deleter) ) );
}
template D const * basic_get_local_deleter( D const *, shared_ptr const & p ) BOOST_SP_NOEXCEPT
{
return static_cast( p._internal_get_local_deleter( BOOST_SP_TYPEID_(local_sp_deleter) ) );
}
} // namespace detail
#if defined(__cpp_deduction_guides)
template shared_ptr( weak_ptr ) -> shared_ptr;
template shared_ptr( std::unique_ptr ) -> shared_ptr;
#endif
} // namespace boost
#if defined( BOOST_SP_DISABLE_DEPRECATED )
#pragma GCC diagnostic pop
#endif
#endif // #ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED