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434 lines
13 KiB
C++
434 lines
13 KiB
C++
#ifndef BOOST_MAKE_SHARED_HPP_INCLUDED
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#define BOOST_MAKE_SHARED_HPP_INCLUDED
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// make_shared.hpp
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//
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// Copyright (c) 2007, 2008 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0.
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// See 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/make_shared.html
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// for documentation.
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#include <boost/config.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/type_traits/type_with_alignment.hpp>
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#include <boost/type_traits/alignment_of.hpp>
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#include <cstddef>
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#include <new>
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namespace boost
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{
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namespace detail
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{
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template< std::size_t N, std::size_t A > struct sp_aligned_storage
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{
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union type
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{
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char data_[ N ];
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typename boost::type_with_alignment< A >::type align_;
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};
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};
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template< class T > class sp_ms_deleter
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{
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private:
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typedef typename sp_aligned_storage< sizeof( T ), ::boost::alignment_of< T >::value >::type storage_type;
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bool initialized_;
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storage_type storage_;
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private:
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void destroy()
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{
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if( initialized_ )
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{
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reinterpret_cast< T* >( storage_.data_ )->~T();
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initialized_ = false;
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}
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}
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public:
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sp_ms_deleter(): initialized_( false )
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{
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}
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~sp_ms_deleter()
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{
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destroy();
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}
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void operator()( T * )
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{
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destroy();
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}
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void * address()
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{
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return storage_.data_;
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}
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void set_initialized()
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{
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initialized_ = true;
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}
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};
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template< class T > T forward( T t )
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{
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return t;
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}
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} // namespace detail
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// Zero-argument versions
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//
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// Used even when variadic templates are available because of the new T() vs new T issue
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template< class T > boost::shared_ptr< T > make_shared()
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T();
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A > boost::shared_ptr< T > allocate_shared( A const & a )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T();
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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#if defined( BOOST_HAS_VARIADIC_TMPL ) && defined( BOOST_HAS_RVALUE_REFS )
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// Variadic templates, rvalue reference
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template< class T, class... Args > boost::shared_ptr< T > make_shared( Args && ... args )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( detail::forward<Args>( args )... );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class... Args > boost::shared_ptr< T > allocate_shared( A const & a, Args && ... args )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( detail::forward<Args>( args )... );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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#else
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// C++03 version
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template< class T, class A1 >
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boost::shared_ptr< T > make_shared( A1 const & a1 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3, class A4 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3, class A4 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3, class A4, class A5 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3, class A4, class A5 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3, class A4, class A5, class A6 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6, a7 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6, a7 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 >
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boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8, A9 const & a9 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >() );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 >
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boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6, A7 const & a7, A8 const & a8, A9 const & a9 )
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{
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boost::shared_ptr< T > pt( static_cast< T* >( 0 ), detail::sp_ms_deleter< T >(), a );
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detail::sp_ms_deleter< T > * pd = boost::get_deleter< detail::sp_ms_deleter< T > >( pt );
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void * pv = pd->address();
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new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 );
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pd->set_initialized();
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return boost::shared_ptr< T >( pt, static_cast< T* >( pv ) );
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}
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#endif
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} // namespace boost
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#endif // #ifndef BOOST_MAKE_SHARED_HPP_INCLUDED
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