711 lines
19 KiB
C++
711 lines
19 KiB
C++
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#ifndef BOOST_SMART_PTR_LOCAL_SHARED_PTR_HPP_INCLUDED
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#define BOOST_SMART_PTR_LOCAL_SHARED_PTR_HPP_INCLUDED
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// local_shared_ptr.hpp
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//
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// Copyright 2017 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/smart_ptr/ for documentation.
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#include <boost/smart_ptr/shared_ptr.hpp>
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namespace boost
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{
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template<class T> class local_shared_ptr;
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namespace detail
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{
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template< class E, class Y > inline void lsp_pointer_construct( boost::local_shared_ptr< E > * /*ppx*/, Y * p, boost::detail::local_counted_base * & pn )
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{
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boost::detail::sp_assert_convertible< Y, E >();
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typedef boost::detail::local_sp_deleter< boost::checked_deleter<Y> > D;
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boost::shared_ptr<E> p2( p, D() );
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D * pd = static_cast< D * >( p2._internal_get_untyped_deleter() );
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pd->pn_ = p2._internal_count();
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pn = pd;
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}
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template< class E, class Y > inline void lsp_pointer_construct( boost::local_shared_ptr< E[] > * /*ppx*/, Y * p, boost::detail::local_counted_base * & pn )
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{
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boost::detail::sp_assert_convertible< Y[], E[] >();
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typedef boost::detail::local_sp_deleter< boost::checked_array_deleter<E> > D;
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boost::shared_ptr<E[]> p2( p, D() );
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D * pd = static_cast< D * >( p2._internal_get_untyped_deleter() );
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pd->pn_ = p2._internal_count();
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pn = pd;
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}
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template< class E, std::size_t N, class Y > inline void lsp_pointer_construct( boost::local_shared_ptr< E[N] > * /*ppx*/, Y * p, boost::detail::local_counted_base * & pn )
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{
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boost::detail::sp_assert_convertible< Y[N], E[N] >();
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typedef boost::detail::local_sp_deleter< boost::checked_array_deleter<E> > D;
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boost::shared_ptr<E[N]> p2( p, D() );
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D * pd = static_cast< D * >( p2._internal_get_untyped_deleter() );
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pd->pn_ = p2._internal_count();
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pn = pd;
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}
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template< class E, class P, class D > inline void lsp_deleter_construct( boost::local_shared_ptr< E > * /*ppx*/, P p, D const& d, boost::detail::local_counted_base * & pn )
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{
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typedef boost::detail::local_sp_deleter<D> D2;
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boost::shared_ptr<E> p2( p, D2( d ) );
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D2 * pd = static_cast< D2 * >( p2._internal_get_untyped_deleter() );
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pd->pn_ = p2._internal_count();
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pn = pd;
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}
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template< class E, class P, class D, class A > inline void lsp_allocator_construct( boost::local_shared_ptr< E > * /*ppx*/, P p, D const& d, A const& a, boost::detail::local_counted_base * & pn )
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{
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typedef boost::detail::local_sp_deleter<D> D2;
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boost::shared_ptr<E> p2( p, D2( d ), a );
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D2 * pd = static_cast< D2 * >( p2._internal_get_untyped_deleter() );
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pd->pn_ = p2._internal_count();
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pn = pd;
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}
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struct lsp_internal_constructor_tag
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{
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};
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} // namespace detail
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//
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// local_shared_ptr
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//
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// as shared_ptr, but local to a thread.
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// reference count manipulations are non-atomic.
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//
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template<class T> class local_shared_ptr
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{
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private:
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typedef local_shared_ptr this_type;
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public:
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typedef typename boost::detail::sp_element<T>::type element_type;
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private:
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element_type * px;
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boost::detail::local_counted_base * pn;
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template<class Y> friend class local_shared_ptr;
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public:
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// destructor
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~local_shared_ptr() BOOST_SP_NOEXCEPT
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{
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if( pn )
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{
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pn->release();
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}
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}
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// constructors
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BOOST_CONSTEXPR local_shared_ptr() BOOST_SP_NOEXCEPT : px( 0 ), pn( 0 )
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{
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}
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#if !defined( BOOST_NO_CXX11_NULLPTR )
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BOOST_CONSTEXPR local_shared_ptr( boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT : px( 0 ), pn( 0 )
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{
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}
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#endif
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// internal constructor, used by make_shared
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BOOST_CONSTEXPR local_shared_ptr( boost::detail::lsp_internal_constructor_tag, element_type * px_, boost::detail::local_counted_base * pn_ ) BOOST_SP_NOEXCEPT : px( px_ ), pn( pn_ )
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{
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}
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template<class Y>
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explicit local_shared_ptr( Y * p ): px( p ), pn( 0 )
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{
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boost::detail::lsp_pointer_construct( this, p, pn );
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}
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template<class Y, class D> local_shared_ptr( Y * p, D d ): px( p ), pn( 0 )
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{
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boost::detail::lsp_deleter_construct( this, p, d, pn );
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}
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#if !defined( BOOST_NO_CXX11_NULLPTR )
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template<class D> local_shared_ptr( boost::detail::sp_nullptr_t p, D d ): px( p ), pn( 0 )
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{
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boost::detail::lsp_deleter_construct( this, p, d, pn );
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}
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#endif
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template<class Y, class D, class A> local_shared_ptr( Y * p, D d, A a ): px( p ), pn( 0 )
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{
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boost::detail::lsp_allocator_construct( this, p, d, a, pn );
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}
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#if !defined( BOOST_NO_CXX11_NULLPTR )
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template<class D, class A> local_shared_ptr( boost::detail::sp_nullptr_t p, D d, A a ): px( p ), pn( 0 )
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{
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boost::detail::lsp_allocator_construct( this, p, d, a, pn );
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}
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#endif
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// construction from shared_ptr
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template<class Y> local_shared_ptr( shared_ptr<Y> const & r,
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typename boost::detail::sp_enable_if_convertible<Y, T>::type = boost::detail::sp_empty() )
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: px( r.get() ), pn( 0 )
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{
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boost::detail::sp_assert_convertible< Y, T >();
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if( r.use_count() != 0 )
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{
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pn = new boost::detail::local_counted_impl( r._internal_count() );
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}
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}
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#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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template<class Y> local_shared_ptr( shared_ptr<Y> && r,
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typename boost::detail::sp_enable_if_convertible<Y, T>::type = boost::detail::sp_empty() )
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: px( r.get() ), pn( 0 )
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{
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boost::detail::sp_assert_convertible< Y, T >();
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if( r.use_count() != 0 )
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{
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pn = new boost::detail::local_counted_impl( r._internal_count() );
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r.reset();
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}
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}
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#endif
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// construction from unique_ptr
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#if !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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template< class Y, class D >
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local_shared_ptr( std::unique_ptr< Y, D > && r,
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typename boost::detail::sp_enable_if_convertible<Y, T>::type = boost::detail::sp_empty() )
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: px( r.get() ), pn( 0 )
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{
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boost::detail::sp_assert_convertible< Y, T >();
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if( px )
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{
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pn = new boost::detail::local_counted_impl( shared_ptr<T>( std::move(r) )._internal_count() );
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}
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}
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#endif
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template< class Y, class D >
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local_shared_ptr( boost::movelib::unique_ptr< Y, D > r ); // !
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// : px( r.get() ), pn( new boost::detail::local_counted_impl( shared_ptr<T>( std::move(r) ) ) )
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//{
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// boost::detail::sp_assert_convertible< Y, T >();
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//}
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// copy constructor
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local_shared_ptr( local_shared_ptr const & r ) BOOST_SP_NOEXCEPT : px( r.px ), pn( r.pn )
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{
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if( pn )
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{
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pn->add_ref();
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}
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}
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// move constructor
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#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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local_shared_ptr( local_shared_ptr && r ) BOOST_SP_NOEXCEPT : px( r.px ), pn( r.pn )
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{
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r.px = 0;
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r.pn = 0;
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}
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#endif
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// converting copy constructor
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template<class Y> local_shared_ptr( local_shared_ptr<Y> const & r,
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typename boost::detail::sp_enable_if_convertible<Y, T>::type = boost::detail::sp_empty() ) BOOST_SP_NOEXCEPT
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: px( r.px ), pn( r.pn )
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{
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boost::detail::sp_assert_convertible< Y, T >();
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if( pn )
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{
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pn->add_ref();
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}
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}
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// converting move constructor
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#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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template<class Y> local_shared_ptr( local_shared_ptr<Y> && r,
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typename boost::detail::sp_enable_if_convertible<Y, T>::type = boost::detail::sp_empty() ) BOOST_SP_NOEXCEPT
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: px( r.px ), pn( r.pn )
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{
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boost::detail::sp_assert_convertible< Y, T >();
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r.px = 0;
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r.pn = 0;
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}
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#endif
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// aliasing
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template<class Y>
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local_shared_ptr( local_shared_ptr<Y> const & r, element_type * p ) BOOST_SP_NOEXCEPT : px( p ), pn( r.pn )
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{
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if( pn )
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{
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pn->add_ref();
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}
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}
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#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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template<class Y>
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local_shared_ptr( local_shared_ptr<Y> && r, element_type * p ) BOOST_SP_NOEXCEPT : px( p ), pn( r.pn )
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{
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r.px = 0;
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r.pn = 0;
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}
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#endif
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// assignment
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local_shared_ptr & operator=( local_shared_ptr const & r ) BOOST_SP_NOEXCEPT
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{
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local_shared_ptr( r ).swap( *this );
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return *this;
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}
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template<class Y> local_shared_ptr & operator=( local_shared_ptr<Y> const & r ) BOOST_SP_NOEXCEPT
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{
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local_shared_ptr( r ).swap( *this );
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return *this;
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}
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#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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local_shared_ptr & operator=( local_shared_ptr && r ) BOOST_SP_NOEXCEPT
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{
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local_shared_ptr( std::move( r ) ).swap( *this );
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return *this;
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}
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template<class Y>
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local_shared_ptr & operator=( local_shared_ptr<Y> && r ) BOOST_SP_NOEXCEPT
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{
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local_shared_ptr( std::move( r ) ).swap( *this );
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return *this;
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}
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#endif
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#if !defined( BOOST_NO_CXX11_NULLPTR )
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local_shared_ptr & operator=( boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
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{
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local_shared_ptr().swap(*this);
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return *this;
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}
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#endif
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#if !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
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template<class Y, class D>
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local_shared_ptr & operator=( std::unique_ptr<Y, D> && r )
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{
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local_shared_ptr( std::move(r) ).swap( *this );
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return *this;
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}
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#endif
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template<class Y, class D>
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local_shared_ptr & operator=( boost::movelib::unique_ptr<Y, D> r ); // !
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// reset
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void reset() BOOST_SP_NOEXCEPT
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{
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local_shared_ptr().swap( *this );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class Y> void reset( Y * p ) // Y must be complete
|
||
|
|
{
|
||
|
|
local_shared_ptr( p ).swap( *this );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class Y, class D> void reset( Y * p, D d )
|
||
|
|
{
|
||
|
|
local_shared_ptr( p, d ).swap( *this );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class Y, class D, class A> void reset( Y * p, D d, A a )
|
||
|
|
{
|
||
|
|
local_shared_ptr( p, d, a ).swap( *this );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class Y> void reset( local_shared_ptr<Y> const & r, element_type * p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
local_shared_ptr( r, p ).swap( *this );
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
|
||
|
|
|
||
|
|
template<class Y> void reset( local_shared_ptr<Y> && r, element_type * p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
local_shared_ptr( std::move( r ), p ).swap( *this );
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// accessors
|
||
|
|
|
||
|
|
typename boost::detail::sp_dereference< T >::type operator* () const BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return *px;
|
||
|
|
}
|
||
|
|
|
||
|
|
typename boost::detail::sp_member_access< T >::type operator-> () const BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
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 <boost/smart_ptr/detail/operator_bool.hpp>
|
||
|
|
|
||
|
|
long local_use_count() const BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return pn? pn->local_use_count(): 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// conversions to shared_ptr, weak_ptr
|
||
|
|
|
||
|
|
#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)
|
||
|
|
template<class Y, class E = typename boost::detail::sp_enable_if_convertible<T,Y>::type> operator shared_ptr<Y>() const BOOST_SP_NOEXCEPT
|
||
|
|
#else
|
||
|
|
template<class Y> operator shared_ptr<Y>() const BOOST_SP_NOEXCEPT
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
boost::detail::sp_assert_convertible<T, Y>();
|
||
|
|
|
||
|
|
if( pn )
|
||
|
|
{
|
||
|
|
return shared_ptr<Y>( boost::detail::sp_internal_constructor_tag(), px, pn->local_cb_get_shared_count() );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return shared_ptr<Y>();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)
|
||
|
|
template<class Y, class E = typename boost::detail::sp_enable_if_convertible<T,Y>::type> operator weak_ptr<Y>() const BOOST_SP_NOEXCEPT
|
||
|
|
#else
|
||
|
|
template<class Y> operator weak_ptr<Y>() const BOOST_SP_NOEXCEPT
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
boost::detail::sp_assert_convertible<T, Y>();
|
||
|
|
|
||
|
|
if( pn )
|
||
|
|
{
|
||
|
|
return shared_ptr<Y>( boost::detail::sp_internal_constructor_tag(), px, pn->local_cb_get_shared_count() );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return weak_ptr<Y>();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// swap
|
||
|
|
|
||
|
|
void swap( local_shared_ptr & r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
std::swap( px, r.px );
|
||
|
|
std::swap( pn, r.pn );
|
||
|
|
}
|
||
|
|
|
||
|
|
// owner_before
|
||
|
|
|
||
|
|
template<class Y> bool owner_before( local_shared_ptr<Y> const & r ) const BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return std::less< boost::detail::local_counted_base* >()( pn, r.pn );
|
||
|
|
}
|
||
|
|
|
||
|
|
// owner_equals
|
||
|
|
|
||
|
|
template<class Y> bool owner_equals( local_shared_ptr<Y> const & r ) const BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return pn == r.pn;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator==( local_shared_ptr<T> const & a, local_shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.get() == b.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator!=( local_shared_ptr<T> const & a, local_shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.get() != b.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !defined( BOOST_NO_CXX11_NULLPTR )
|
||
|
|
|
||
|
|
template<class T> inline bool operator==( local_shared_ptr<T> const & p, boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return p.get() == 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T> inline bool operator==( boost::detail::sp_nullptr_t, local_shared_ptr<T> const & p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return p.get() == 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T> inline bool operator!=( local_shared_ptr<T> const & p, boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return p.get() != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, local_shared_ptr<T> const & p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return p.get() != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator==( local_shared_ptr<T> const & a, shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.get() == b.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator!=( local_shared_ptr<T> const & a, shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.get() != b.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator==( shared_ptr<T> const & a, local_shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.get() == b.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator!=( shared_ptr<T> const & a, local_shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.get() != b.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> inline bool operator<(local_shared_ptr<T> const & a, local_shared_ptr<U> const & b) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return a.owner_before( b );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T> inline void swap( local_shared_ptr<T> & a, local_shared_ptr<T> & b ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
a.swap( b );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> static_pointer_cast( local_shared_ptr<U> const & r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) static_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = static_cast< E* >( r.get() );
|
||
|
|
return local_shared_ptr<T>( r, p );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> const_pointer_cast( local_shared_ptr<U> const & r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) const_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = const_cast< E* >( r.get() );
|
||
|
|
return local_shared_ptr<T>( r, p );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> dynamic_pointer_cast( local_shared_ptr<U> const & r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) dynamic_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = dynamic_cast< E* >( r.get() );
|
||
|
|
return p? local_shared_ptr<T>( r, p ): local_shared_ptr<T>();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> reinterpret_pointer_cast( local_shared_ptr<U> const & r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) reinterpret_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = reinterpret_cast< E* >( r.get() );
|
||
|
|
return local_shared_ptr<T>( r, p );
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> static_pointer_cast( local_shared_ptr<U> && r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) static_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = static_cast< E* >( r.get() );
|
||
|
|
return local_shared_ptr<T>( std::move(r), p );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> const_pointer_cast( local_shared_ptr<U> && r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) const_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = const_cast< E* >( r.get() );
|
||
|
|
return local_shared_ptr<T>( std::move(r), p );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> dynamic_pointer_cast( local_shared_ptr<U> && r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) dynamic_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = dynamic_cast< E* >( r.get() );
|
||
|
|
return p? local_shared_ptr<T>( std::move(r), p ): local_shared_ptr<T>();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class T, class U> local_shared_ptr<T> reinterpret_pointer_cast( local_shared_ptr<U> && r ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
(void) reinterpret_cast< T* >( static_cast< U* >( 0 ) );
|
||
|
|
|
||
|
|
typedef typename local_shared_ptr<T>::element_type E;
|
||
|
|
|
||
|
|
E * p = reinterpret_cast< E* >( r.get() );
|
||
|
|
return local_shared_ptr<T>( std::move(r), p );
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
|
||
|
|
|
||
|
|
// get_pointer() enables boost::mem_fn to recognize local_shared_ptr
|
||
|
|
|
||
|
|
template<class T> inline typename local_shared_ptr<T>::element_type * get_pointer( local_shared_ptr<T> const & p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return p.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
// operator<<
|
||
|
|
|
||
|
|
#if !defined(BOOST_NO_IOSTREAM)
|
||
|
|
|
||
|
|
template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< ( std::basic_ostream<E, T> & os, local_shared_ptr<Y> const & p )
|
||
|
|
{
|
||
|
|
os << p.get();
|
||
|
|
return os;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // !defined(BOOST_NO_IOSTREAM)
|
||
|
|
|
||
|
|
// get_deleter
|
||
|
|
|
||
|
|
template<class D, class T> D * get_deleter( local_shared_ptr<T> const & p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return get_deleter<D>( shared_ptr<T>( p ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// hash_value
|
||
|
|
|
||
|
|
template< class T > struct hash;
|
||
|
|
|
||
|
|
template< class T > std::size_t hash_value( local_shared_ptr<T> const & p ) BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return boost::hash< typename local_shared_ptr<T>::element_type* >()( p.get() );
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
// std::hash
|
||
|
|
|
||
|
|
#if !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
|
||
|
|
|
||
|
|
namespace std
|
||
|
|
{
|
||
|
|
|
||
|
|
template<class T> struct hash< ::boost::local_shared_ptr<T> >
|
||
|
|
{
|
||
|
|
std::size_t operator()( ::boost::local_shared_ptr<T> const & p ) const BOOST_SP_NOEXCEPT
|
||
|
|
{
|
||
|
|
return std::hash< typename ::boost::local_shared_ptr<T>::element_type* >()( p.get() );
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace std
|
||
|
|
|
||
|
|
#endif // #if !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
|
||
|
|
|
||
|
|
#endif // #ifndef BOOST_SMART_PTR_LOCAL_SHARED_PTR_HPP_INCLUDED
|