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Diffstat (limited to 'libcutl/cutl/details/boost/smart_ptr/shared_ptr.hpp')
| -rw-r--r-- | libcutl/cutl/details/boost/smart_ptr/shared_ptr.hpp | 1035 |
1 files changed, 1035 insertions, 0 deletions
diff --git a/libcutl/cutl/details/boost/smart_ptr/shared_ptr.hpp b/libcutl/cutl/details/boost/smart_ptr/shared_ptr.hpp new file mode 100644 index 0000000..f528a7a --- /dev/null +++ b/libcutl/cutl/details/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 <cutl/details/boost/config.hpp> // for broken compiler workarounds + +#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) +#include <cutl/details/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 <cutl/details/boost/config/no_tr1/memory.hpp> // std::auto_ptr + +#include <cutl/details/boost/assert.hpp> +#include <cutl/details/boost/checked_delete.hpp> +#include <cutl/details/boost/throw_exception.hpp> +#include <cutl/details/boost/smart_ptr/detail/shared_count.hpp> +#include <cutl/details/boost/detail/workaround.hpp> +#include <cutl/details/boost/smart_ptr/detail/sp_convertible.hpp> +#include <cutl/details/boost/smart_ptr/detail/sp_nullptr_t.hpp> + +#if !defined(BOOST_SP_NO_ATOMIC_ACCESS) +#include <cutl/details/boost/smart_ptr/detail/spinlock_pool.hpp> +#include <cutl/details/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 cutl_details_boost +{ + +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( cutl_details_boost::shared_ptr<X> const * ppx, Y const * py, cutl_details_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( cutl_details_boost::shared_ptr<X> * ppx, Y const * py, cutl_details_boost::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( cutl_details_boost::shared_ptr< T > * ppx, Y * p, cutl_details_boost::detail::shared_count & pn ) +{ + cutl_details_boost::detail::shared_count( p ).swap( pn ); + cutl_details_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( cutl_details_boost::shared_ptr< T[] > * /*ppx*/, Y * p, cutl_details_boost::detail::shared_count & pn ) +{ + sp_assert_convertible< Y[], T[] >(); + cutl_details_boost::detail::shared_count( p, cutl_details_boost::checked_array_deleter< T >() ).swap( pn ); +} + +template< class T, std::size_t N, class Y > inline void sp_pointer_construct( cutl_details_boost::shared_ptr< T[N] > * /*ppx*/, Y * p, cutl_details_boost::detail::shared_count & pn ) +{ + sp_assert_convertible< Y[N], T[N] >(); + cutl_details_boost::detail::shared_count( p, cutl_details_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( cutl_details_boost::shared_ptr< T > * ppx, Y * p ) +{ + cutl_details_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( cutl_details_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( cutl_details_boost::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 cutl_details_boost::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( cutl_details_boost::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 + { + cutl_details_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<class Y, class D> shared_ptr( Y * p, D d ): px( p ), pn( p, d ) + { + cutl_details_boost::detail::sp_deleter_construct( this, p ); + } + +#if !defined( BOOST_NO_CXX11_NULLPTR ) + + template<class D> shared_ptr( cutl_details_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<class Y, class D, class A> shared_ptr( Y * p, D d, A a ): px( p ), pn( p, d, a ) + { + cutl_details_boost::detail::sp_deleter_construct( this, p ); + } + +#if !defined( BOOST_NO_CXX11_NULLPTR ) + + template<class D, class A> shared_ptr( cutl_details_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_NOEXCEPT : px( r.px ), pn( r.pn ) + { + } + +#endif + + template<class Y> + explicit shared_ptr( weak_ptr<Y> const & r ): pn( r.pn ) // may throw + { + cutl_details_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<class Y> + shared_ptr( weak_ptr<Y> const & r, cutl_details_boost::detail::sp_nothrow_tag ) + BOOST_NOEXCEPT : px( 0 ), pn( r.pn, cutl_details_boost::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 cutl_details_boost::detail::sp_enable_if_convertible<Y,T>::type = cutl_details_boost::detail::sp_empty() ) + +#else + + shared_ptr( shared_ptr<Y> const & r ) + +#endif + BOOST_NOEXCEPT : px( r.px ), pn( r.pn ) + { + cutl_details_boost::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() + { + cutl_details_boost::detail::sp_assert_convertible< Y, T >(); + + Y * tmp = r.get(); + pn = cutl_details_boost::detail::shared_count( r ); + + cutl_details_boost::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() + { + cutl_details_boost::detail::sp_assert_convertible< Y, T >(); + + Y * tmp = r.get(); + pn = cutl_details_boost::detail::shared_count( r ); + + cutl_details_boost::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 cutl_details_boost::detail::sp_enable_if_auto_ptr<Ap, int>::type = 0 ): px( r.get() ), pn() + { + typedef typename Ap::element_type Y; + + cutl_details_boost::detail::sp_assert_convertible< Y, T >(); + + Y * tmp = r.get(); + pn = cutl_details_boost::detail::shared_count( r ); + + cutl_details_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() + { + cutl_details_boost::detail::sp_assert_convertible< Y, T >(); + + typename std::unique_ptr< Y, D >::pointer tmp = r.get(); + pn = cutl_details_boost::detail::shared_count( r ); + + cutl_details_boost::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 cutl_details_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<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 cutl_details_boost::detail::sp_enable_if_convertible<Y,T>::type = cutl_details_boost::detail::sp_empty() ) + +#else + + shared_ptr( shared_ptr<Y> && r ) + +#endif + BOOST_NOEXCEPT : px( r.px ), pn() + { + cutl_details_boost::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=( cutl_details_boost::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 cutl_details_boost::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 cutl_details_boost::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 cutl_details_boost::detail::sp_array_access< T >::type operator[] ( std::ptrdiff_t i ) const + { + BOOST_ASSERT( px != 0 ); + BOOST_ASSERT( i >= 0 && ( i < cutl_details_boost::detail::sp_extent< T >::value || cutl_details_boost::detail::sp_extent< T >::value == 0 ) ); + + return px[ i ]; + } + + element_type * get() const BOOST_NOEXCEPT + { + return px; + } + +// implicit conversion to "bool" +#include <cutl/details/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( cutl_details_boost::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 + cutl_details_boost::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, cutl_details_boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT +{ + return p.get() == 0; +} + +template<class T> inline bool operator==( cutl_details_boost::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, cutl_details_boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT +{ + return p.get() != 0; +} + +template<class T> inline bool operator!=( cutl_details_boost::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 cutl_details_boost::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 cutl_details_boost::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 = cutl_details_boost::detail::basic_get_deleter<D>(p); + + if(del == 0) + { + cutl_details_boost::detail::esft2_deleter_wrapper *del_wrapper = cutl_details_boost::detail::basic_get_deleter<cutl_details_boost::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->::cutl_details_boost::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 ) +{ + cutl_details_boost::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 ) +{ + cutl_details_boost::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 ) +{ + cutl_details_boost::detail::spinlock & sp = cutl_details_boost::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 ) +{ + cutl_details_boost::detail::spinlock & sp = cutl_details_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<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( cutl_details_boost::shared_ptr<T> const & p ) BOOST_NOEXCEPT +{ + return cutl_details_boost::hash< T* >()( p.get() ); +} + +} // namespace cutl_details_boost + +#endif // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) + +#endif // #ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED |