#ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED | |
#define BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED | |
// make_shared.hpp | |
// | |
// Copyright (c) 2007, 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/make_shared.html | |
// for documentation. | |
#include <boost/config.hpp> | |
#include <boost/smart_ptr/shared_ptr.hpp> | |
#include <boost/type_traits/type_with_alignment.hpp> | |
#include <boost/type_traits/alignment_of.hpp> | |
#include <cstddef> | |
#include <new> | |
namespace boost | |
{ | |
namespace detail | |
{ | |
template< std::size_t N, std::size_t A > struct sp_aligned_storage | |
{ | |
union type | |
{ | |
char data_[ N ]; | |
typename boost::type_with_alignment< A >::type align_; | |
}; | |
}; | |
template< class T > class sp_ms_deleter | |
{ | |
private: | |
typedef typename sp_aligned_storage< sizeof( T ), ::boost::alignment_of< T >::value >::type storage_type; | |
bool initialized_; | |
storage_type storage_; | |
private: | |
void destroy() | |
{ | |
if( initialized_ ) | |
{ | |
reinterpret_cast< T* >( storage_.data_ )->~T(); | |
initialized_ = false; | |
} | |
} | |
public: | |
sp_ms_deleter(): initialized_( false ) | |
{ | |
} | |
// optimization: do not copy storage_ | |
sp_ms_deleter( sp_ms_deleter const & ): initialized_( false ) | |
{ | |
} | |
~sp_ms_deleter() | |
{ | |
destroy(); | |
} | |
void operator()( T * ) | |
{ | |
destroy(); | |
} | |
void * address() | |
{ | |
return storage_.data_; | |
} | |
void set_initialized() | |
{ | |
initialized_ = true; | |
} | |
}; | |
#if defined( BOOST_HAS_RVALUE_REFS ) | |
template< class T > T&& sp_forward( T & t ) | |
{ | |
return static_cast< T&& >( t ); | |
} | |
#endif | |
} // namespace detail | |
// Zero-argument versions | |
// | |
// Used even when variadic templates are available because of the new T() vs new T issue | |
template< class T > boost::shared_ptr< T > make_shared() | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T(); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A > boost::shared_ptr< T > allocate_shared( A const & a ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T(); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
#if defined( BOOST_HAS_VARIADIC_TMPL ) && defined( BOOST_HAS_RVALUE_REFS ) | |
// Variadic templates, rvalue reference | |
template< class T, class Arg1, class... Args > boost::shared_ptr< T > make_shared( Arg1 && arg1, Args && ... args ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( boost::detail::sp_forward<Arg1>( arg1 ), boost::detail::sp_forward<Args>( args )... ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class Arg1, class... Args > boost::shared_ptr< T > allocate_shared( A const & a, Arg1 && arg1, Args && ... args ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( boost::detail::sp_forward<Arg1>( arg1 ), boost::detail::sp_forward<Args>( args )... ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
#else | |
// C++03 version | |
template< class T, class A1 > | |
boost::shared_ptr< T > make_shared( A1 const & a1 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1 > | |
boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2 > | |
boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2 > | |
boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3 > | |
boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3 > | |
boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3, class A4 > | |
boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3, class A4 > | |
boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3, class A4, class A5 > | |
boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3, class A4, class A5 > | |
boost::shared_ptr< T > allocate_shared( A const & a, A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3, class A4, class A5, class A6 > | |
boost::shared_ptr< T > make_shared( A1 const & a1, A2 const & a2, A3 const & a3, A4 const & a4, A5 const & a5, A6 const & a6 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6, a7 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6, a7 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >() ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
template< class T, class A, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9 > | |
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 ) | |
{ | |
boost::shared_ptr< T > pt( static_cast< T* >( 0 ), boost::detail::sp_ms_deleter< T >(), a ); | |
boost::detail::sp_ms_deleter< T > * pd = boost::get_deleter< boost::detail::sp_ms_deleter< T > >( pt ); | |
void * pv = pd->address(); | |
::new( pv ) T( a1, a2, a3, a4, a5, a6, a7, a8, a9 ); | |
pd->set_initialized(); | |
T * pt2 = static_cast< T* >( pv ); | |
boost::detail::sp_enable_shared_from_this( &pt, pt2, pt2 ); | |
return boost::shared_ptr< T >( pt, pt2 ); | |
} | |
#endif | |
} // namespace boost | |
#endif // #ifndef BOOST_SMART_PTR_MAKE_SHARED_HPP_INCLUDED |