diff options
Diffstat (limited to 'contrib/src/boost/smart_ptr/shared_ptr.hpp')
-rw-r--r-- | contrib/src/boost/smart_ptr/shared_ptr.hpp | 2233 |
1 files changed, 1139 insertions, 1094 deletions
diff --git a/contrib/src/boost/smart_ptr/shared_ptr.hpp b/contrib/src/boost/smart_ptr/shared_ptr.hpp index 77f68be..b58a29c 100644 --- a/contrib/src/boost/smart_ptr/shared_ptr.hpp +++ b/contrib/src/boost/smart_ptr/shared_ptr.hpp @@ -1,1094 +1,1139 @@ -#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 - -// 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> -#include <boost/smart_ptr/detail/sp_disable_deprecated.hpp> - -#if !defined(BOOST_SP_NO_ATOMIC_ACCESS) -#include <boost/smart_ptr/detail/spinlock_pool.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 - -#if defined( BOOST_SP_DISABLE_DEPRECATED ) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wdeprecated-declarations" -#endif - -namespace 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 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( __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( boost::shared_ptr<X> 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<X> * ppx, Y const * py, 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( 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 ) - -} // 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 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( 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 - { - 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 ) - { - boost::detail::sp_deleter_construct( this, p ); - } - -#if !defined( BOOST_NO_CXX11_NULLPTR ) - - template<class D> 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<class Y, class D, class A> 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<class D, class A> 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_NOEXCEPT : px( r.px ), pn( r.pn ) - { - } - -#endif - - template<class Y> - explicit shared_ptr( weak_ptr<Y> 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<class Y> - shared_ptr( weak_ptr<Y> const & r, boost::detail::sp_nothrow_tag ) - BOOST_NOEXCEPT : px( 0 ), pn( r.pn, 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 boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() ) - -#else - - shared_ptr( shared_ptr<Y> const & r ) - -#endif - BOOST_NOEXCEPT : px( r.px ), pn( r.pn ) - { - 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() - { - 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<class Y> - shared_ptr( std::auto_ptr<Y> && 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<class Ap> - explicit shared_ptr( Ap r, typename boost::detail::sp_enable_if_auto_ptr<Ap, int>::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(); - 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(); - pn = boost::detail::shared_count( r ); - - boost::detail::sp_deleter_construct( this, tmp ); - } - - // 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 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 - - template<class Y, class D> - shared_ptr & operator=( boost::movelib::unique_ptr<Y, D> r ) - { - // this_type( static_cast< unique_ptr<Y, D> && >( r ) ).swap( *this ); - - boost::detail::sp_assert_convertible< Y, T >(); - - typename boost::movelib::unique_ptr< Y, D >::pointer p = r.get(); - - shared_ptr tmp; - - 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_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 boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() ) - -#else - - shared_ptr( shared_ptr<Y> && r ) - -#endif - BOOST_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_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; - } - - // aliasing move - template<class Y> - shared_ptr( shared_ptr<Y> && r, element_type * p ) BOOST_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_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 ); - } - -#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) - - template<class Y> void reset( shared_ptr<Y> && r, element_type * p ) - { - this_type( static_cast< shared_ptr<Y> && >( r ), p ).swap( *this ); - } - -#endif - - // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT) - typename 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 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 boost::detail::sp_array_access< T >::type operator[] ( std::ptrdiff_t i ) const - { - 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_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( 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 - 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, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT -{ - return p.get() == 0; -} - -template<class T> inline bool operator==( 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, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT -{ - return p.get() != 0; -} - -template<class T> inline bool operator!=( 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 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 const volatile> 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 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 = boost::detail::basic_get_deleter<D>(p); - - if(del == 0) - { - boost::detail::esft2_deleter_wrapper *del_wrapper = boost::detail::basic_get_deleter<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->::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 ) -{ - 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*/ int ) -{ - return atomic_load( p ); -} - -template<class T> void atomic_store( shared_ptr<T> * p, shared_ptr<T> r ) -{ - 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*/ int ) -{ - atomic_store( p, r ); // std::move( r ) -} - -template<class T> shared_ptr<T> atomic_exchange( shared_ptr<T> * p, shared_ptr<T> r ) -{ - 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<class T> shared_ptr<T> atomic_exchange_explicit( shared_ptr<T> * p, shared_ptr<T> r, /*memory_order mo*/ int ) -{ - 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 ) -{ - 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<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*/ int, /*memory_order failure*/ int ) -{ - 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<T> const & p ) BOOST_NOEXCEPT -{ - return boost::hash< typename boost::shared_ptr<T>::element_type* >()( p.get() ); -} - -} // namespace boost - -#if defined( BOOST_SP_DISABLE_DEPRECATED ) -#pragma GCC diagnostic pop -#endif - -#endif // #ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED +#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
+
+// 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>
+#include <boost/smart_ptr/detail/sp_disable_deprecated.hpp>
+#include <boost/smart_ptr/detail/sp_noexcept.hpp>
+
+#if !defined(BOOST_SP_NO_ATOMIC_ACCESS)
+#include <boost/smart_ptr/detail/spinlock_pool.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
+
+#if defined( BOOST_SP_DISABLE_DEPRECATED )
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+
+namespace 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 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( __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( boost::shared_ptr<X> 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<X> * ppx, Y const * py, 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( 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 )
+
+} // 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 boost::detail::sp_element< T >::type element_type;
+
+ shared_ptr() BOOST_SP_NOEXCEPT : px( 0 ), pn() // never throws in 1.30+
+ {
+ }
+
+#if !defined( BOOST_NO_CXX11_NULLPTR )
+
+ shared_ptr( boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT : px( 0 ), pn() // never throws
+ {
+ }
+
+#endif
+
+ template<class Y>
+ 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<class Y, class D> 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<class D> 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<class Y, class D, class A> 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<class D, class A> 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<class Y>
+ explicit shared_ptr( weak_ptr<Y> 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<class Y>
+ shared_ptr( weak_ptr<Y> const & r, boost::detail::sp_nothrow_tag )
+ BOOST_NOEXCEPT : px( 0 ), pn( r.pn, 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 boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+ shared_ptr( shared_ptr<Y> const & r )
+
+#endif
+ BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
+ {
+ 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()
+ {
+ 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<class Y>
+ shared_ptr( std::auto_ptr<Y> && 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<class Ap>
+ explicit shared_ptr( Ap r, typename boost::detail::sp_enable_if_auto_ptr<Ap, int>::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();
+ 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();
+ 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<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 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
+
+ template<class Y, class D>
+ shared_ptr & operator=( boost::movelib::unique_ptr<Y, D> r )
+ {
+ // this_type( static_cast< unique_ptr<Y, D> && >( r ) ).swap( *this );
+
+ boost::detail::sp_assert_convertible< Y, T >();
+
+ typename boost::movelib::unique_ptr< Y, D >::pointer p = r.get();
+
+ shared_ptr tmp;
+
+ 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<class Y>
+#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
+
+ shared_ptr( shared_ptr<Y> && r, typename boost::detail::sp_enable_if_convertible<Y,T>::type = boost::detail::sp_empty() )
+
+#else
+
+ shared_ptr( shared_ptr<Y> && r )
+
+#endif
+ BOOST_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<class Y>
+ shared_ptr & operator=( shared_ptr<Y> && r ) BOOST_NOEXCEPT
+ {
+ this_type( static_cast< shared_ptr<Y> && >( r ) ).swap( *this );
+ return *this;
+ }
+
+ // aliasing move
+ template<class Y>
+ shared_ptr( shared_ptr<Y> && r, element_type * p ) BOOST_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_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 );
+ }
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+ template<class Y> void reset( shared_ptr<Y> && r, element_type * p )
+ {
+ this_type( static_cast< shared_ptr<Y> && >( r ), p ).swap( *this );
+ }
+
+#endif
+
+ // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
+ typename 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 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 boost::detail::sp_array_access< T >::type operator[] ( std::ptrdiff_t i ) const
+ {
+ 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_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( 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
+ 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, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+ return p.get() == 0;
+}
+
+template<class T> inline bool operator==( 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, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
+{
+ return p.get() != 0;
+}
+
+template<class T> inline bool operator!=( 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 );
+}
+
+#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+template<class T, class U> shared_ptr<T> static_pointer_cast( shared_ptr<U> && 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>( std::move(r), p );
+}
+
+template<class T, class U> shared_ptr<T> const_pointer_cast( shared_ptr<U> && 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>( std::move(r), p );
+}
+
+template<class T, class U> shared_ptr<T> dynamic_pointer_cast( shared_ptr<U> && 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>( std::move(r), p ): shared_ptr<T>();
+}
+
+template<class T, class U> shared_ptr<T> reinterpret_pointer_cast( shared_ptr<U> && 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>( std::move(r), p );
+}
+
+#endif // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+// get_pointer() enables 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 const volatile> 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 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 = boost::detail::basic_get_deleter<D>(p);
+
+ if(del == 0)
+ {
+ boost::detail::esft2_deleter_wrapper *del_wrapper = boost::detail::basic_get_deleter<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->::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 )
+{
+ 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*/ int )
+{
+ return atomic_load( p );
+}
+
+template<class T> void atomic_store( shared_ptr<T> * p, shared_ptr<T> r )
+{
+ 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*/ int )
+{
+ atomic_store( p, r ); // std::move( r )
+}
+
+template<class T> shared_ptr<T> atomic_exchange( shared_ptr<T> * p, shared_ptr<T> r )
+{
+ 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<class T> shared_ptr<T> atomic_exchange_explicit( shared_ptr<T> * p, shared_ptr<T> r, /*memory_order mo*/ int )
+{
+ 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 )
+{
+ 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<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*/ int, /*memory_order failure*/ int )
+{
+ 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<T> const & p ) BOOST_NOEXCEPT
+{
+ return boost::hash< typename boost::shared_ptr<T>::element_type* >()( p.get() );
+}
+
+} // namespace boost
+
+#if defined( BOOST_SP_DISABLE_DEPRECATED )
+#pragma GCC diagnostic pop
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_SHARED_PTR_HPP_INCLUDED
|