diff options
Diffstat (limited to 'contrib/src/boost/smart_ptr/detail/shared_count.hpp')
-rw-r--r-- | contrib/src/boost/smart_ptr/detail/shared_count.hpp | 1364 |
1 files changed, 709 insertions, 655 deletions
diff --git a/contrib/src/boost/smart_ptr/detail/shared_count.hpp b/contrib/src/boost/smart_ptr/detail/shared_count.hpp index cd9b262..7996aa4 100644 --- a/contrib/src/boost/smart_ptr/detail/shared_count.hpp +++ b/contrib/src/boost/smart_ptr/detail/shared_count.hpp @@ -1,655 +1,709 @@ -#ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
-#define BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
-
-// MS compatible compilers support #pragma once
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-//
-// detail/shared_count.hpp
-//
-// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
-// Copyright 2004-2005 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)
-//
-
-#ifdef __BORLANDC__
-# pragma warn -8027 // Functions containing try are not expanded inline
-#endif
-
-#include <boost/config.hpp>
-#include <boost/checked_delete.hpp>
-#include <boost/throw_exception.hpp>
-#include <boost/smart_ptr/bad_weak_ptr.hpp>
-#include <boost/smart_ptr/detail/sp_counted_base.hpp>
-#include <boost/smart_ptr/detail/sp_counted_impl.hpp>
-#include <boost/smart_ptr/detail/sp_disable_deprecated.hpp>
-#include <boost/detail/workaround.hpp>
-// 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 <functional> // std::less
-
-#ifdef BOOST_NO_EXCEPTIONS
-# include <new> // std::bad_alloc
-#endif
-
-#include <boost/core/addressof.hpp>
-
-#if defined( BOOST_SP_DISABLE_DEPRECATED )
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-
-namespace boost
-{
-
-namespace movelib
-{
-
- template< class T, class D > class unique_ptr;
-
-} // namespace movelib
-
-namespace detail
-{
-
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-
-int const shared_count_id = 0x2C35F101;
-int const weak_count_id = 0x298C38A4;
-
-#endif
-
-struct sp_nothrow_tag {};
-
-template< class D > struct sp_inplace_tag
-{
-};
-
-template< class T > class sp_reference_wrapper
-{
-public:
-
- explicit sp_reference_wrapper( T & t): t_( boost::addressof( t ) )
- {
- }
-
- template< class Y > void operator()( Y * p ) const
- {
- (*t_)( p );
- }
-
-private:
-
- T * t_;
-};
-
-template< class D > struct sp_convert_reference
-{
- typedef D type;
-};
-
-template< class D > struct sp_convert_reference< D& >
-{
- typedef sp_reference_wrapper< D > type;
-};
-
-class weak_count;
-
-class shared_count
-{
-private:
-
- sp_counted_base * pi_;
-
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- int id_;
-#endif
-
- friend class weak_count;
-
-public:
-
- shared_count(): pi_(0) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- }
-
- template<class Y> explicit shared_count( Y * p ): pi_( 0 )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
-#ifndef BOOST_NO_EXCEPTIONS
-
- try
- {
- pi_ = new sp_counted_impl_p<Y>( p );
- }
- catch(...)
- {
- boost::checked_delete( p );
- throw;
- }
-
-#else
-
- pi_ = new sp_counted_impl_p<Y>( p );
-
- if( pi_ == 0 )
- {
- boost::checked_delete( p );
- boost::throw_exception( std::bad_alloc() );
- }
-
-#endif
- }
-
-#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1200 )
- template<class Y, class D> shared_count( Y * p, D d ): pi_(0)
-#else
- template<class P, class D> shared_count( P p, D d ): pi_(0)
-#endif
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
-#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1200 )
- typedef Y* P;
-#endif
-#ifndef BOOST_NO_EXCEPTIONS
-
- try
- {
- pi_ = new sp_counted_impl_pd<P, D>(p, d);
- }
- catch(...)
- {
- d(p); // delete p
- throw;
- }
-
-#else
-
- pi_ = new sp_counted_impl_pd<P, D>(p, d);
-
- if(pi_ == 0)
- {
- d(p); // delete p
- boost::throw_exception(std::bad_alloc());
- }
-
-#endif
- }
-
-#if !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
-
- template< class P, class D > shared_count( P p, sp_inplace_tag<D> ): pi_( 0 )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
-#ifndef BOOST_NO_EXCEPTIONS
-
- try
- {
- pi_ = new sp_counted_impl_pd< P, D >( p );
- }
- catch( ... )
- {
- D::operator_fn( p ); // delete p
- throw;
- }
-
-#else
-
- pi_ = new sp_counted_impl_pd< P, D >( p );
-
- if( pi_ == 0 )
- {
- D::operator_fn( p ); // delete p
- boost::throw_exception( std::bad_alloc() );
- }
-
-#endif // #ifndef BOOST_NO_EXCEPTIONS
- }
-
-#endif // !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
-
- template<class P, class D, class A> shared_count( P p, D d, A a ): pi_( 0 )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- typedef sp_counted_impl_pda<P, D, A> impl_type;
-
-#if !defined( BOOST_NO_CXX11_ALLOCATOR )
-
- typedef typename std::allocator_traits<A>::template rebind_alloc< impl_type > A2;
-
-#else
-
- typedef typename A::template rebind< impl_type >::other A2;
-
-#endif
-
- A2 a2( a );
-
-#ifndef BOOST_NO_EXCEPTIONS
-
- try
- {
- pi_ = a2.allocate( 1 );
- ::new( static_cast< void* >( pi_ ) ) impl_type( p, d, a );
- }
- catch(...)
- {
- d( p );
-
- if( pi_ != 0 )
- {
- a2.deallocate( static_cast< impl_type* >( pi_ ), 1 );
- }
-
- throw;
- }
-
-#else
-
- pi_ = a2.allocate( 1 );
-
- if( pi_ != 0 )
- {
- ::new( static_cast< void* >( pi_ ) ) impl_type( p, d, a );
- }
- else
- {
- d( p );
- boost::throw_exception( std::bad_alloc() );
- }
-
-#endif
- }
-
-#if !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
-
- template< class P, class D, class A > shared_count( P p, sp_inplace_tag< D >, A a ): pi_( 0 )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- typedef sp_counted_impl_pda< P, D, A > impl_type;
-
-#if !defined( BOOST_NO_CXX11_ALLOCATOR )
-
- typedef typename std::allocator_traits<A>::template rebind_alloc< impl_type > A2;
-
-#else
-
- typedef typename A::template rebind< impl_type >::other A2;
-
-#endif
-
- A2 a2( a );
-
-#ifndef BOOST_NO_EXCEPTIONS
-
- try
- {
- pi_ = a2.allocate( 1 );
- ::new( static_cast< void* >( pi_ ) ) impl_type( p, a );
- }
- catch(...)
- {
- D::operator_fn( p );
-
- if( pi_ != 0 )
- {
- a2.deallocate( static_cast< impl_type* >( pi_ ), 1 );
- }
-
- throw;
- }
-
-#else
-
- pi_ = a2.allocate( 1 );
-
- if( pi_ != 0 )
- {
- ::new( static_cast< void* >( pi_ ) ) impl_type( p, a );
- }
- else
- {
- D::operator_fn( p );
- boost::throw_exception( std::bad_alloc() );
- }
-
-#endif // #ifndef BOOST_NO_EXCEPTIONS
- }
-
-#endif // !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING )
-
-#ifndef BOOST_NO_AUTO_PTR
-
- // auto_ptr<Y> is special cased to provide the strong guarantee
-
- template<class Y>
- explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
-#ifdef BOOST_NO_EXCEPTIONS
-
- if( pi_ == 0 )
- {
- boost::throw_exception(std::bad_alloc());
- }
-
-#endif
-
- r.release();
- }
-
-#endif
-
-#if !defined( BOOST_NO_CXX11_SMART_PTR )
-
- template<class Y, class D>
- explicit shared_count( std::unique_ptr<Y, D> & r ): pi_( 0 )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- typedef typename sp_convert_reference<D>::type D2;
-
- D2 d2( r.get_deleter() );
- pi_ = new sp_counted_impl_pd< typename std::unique_ptr<Y, D>::pointer, D2 >( r.get(), d2 );
-
-#ifdef BOOST_NO_EXCEPTIONS
-
- if( pi_ == 0 )
- {
- boost::throw_exception( std::bad_alloc() );
- }
-
-#endif
-
- r.release();
- }
-
-#endif
-
- template<class Y, class D>
- explicit shared_count( boost::movelib::unique_ptr<Y, D> & r ): pi_( 0 )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- typedef typename sp_convert_reference<D>::type D2;
-
- D2 d2( r.get_deleter() );
- pi_ = new sp_counted_impl_pd< typename boost::movelib::unique_ptr<Y, D>::pointer, D2 >( r.get(), d2 );
-
-#ifdef BOOST_NO_EXCEPTIONS
-
- if( pi_ == 0 )
- {
- boost::throw_exception( std::bad_alloc() );
- }
-
-#endif
-
- r.release();
- }
-
- ~shared_count() // nothrow
- {
- if( pi_ != 0 ) pi_->release();
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- id_ = 0;
-#endif
- }
-
- shared_count(shared_count const & r): pi_(r.pi_) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- if( pi_ != 0 ) pi_->add_ref_copy();
- }
-
-#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
-
- shared_count(shared_count && r): pi_(r.pi_) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
- {
- r.pi_ = 0;
- }
-
-#endif
-
- explicit shared_count(weak_count const & r); // throws bad_weak_ptr when r.use_count() == 0
- shared_count( weak_count const & r, sp_nothrow_tag ); // constructs an empty *this when r.use_count() == 0
-
- shared_count & operator= (shared_count const & r) // nothrow
- {
- sp_counted_base * tmp = r.pi_;
-
- if( tmp != pi_ )
- {
- if( tmp != 0 ) tmp->add_ref_copy();
- if( pi_ != 0 ) pi_->release();
- pi_ = tmp;
- }
-
- return *this;
- }
-
- void swap(shared_count & r) // nothrow
- {
- sp_counted_base * tmp = r.pi_;
- r.pi_ = pi_;
- pi_ = tmp;
- }
-
- long use_count() const // nothrow
- {
- return pi_ != 0? pi_->use_count(): 0;
- }
-
- bool unique() const // nothrow
- {
- return use_count() == 1;
- }
-
- bool empty() const // nothrow
- {
- return pi_ == 0;
- }
-
- friend inline bool operator==(shared_count const & a, shared_count const & b)
- {
- return a.pi_ == b.pi_;
- }
-
- friend inline bool operator<(shared_count const & a, shared_count const & b)
- {
- return std::less<sp_counted_base *>()( a.pi_, b.pi_ );
- }
-
- void * get_deleter( sp_typeinfo const & ti ) const
- {
- return pi_? pi_->get_deleter( ti ): 0;
- }
-
- void * get_untyped_deleter() const
- {
- return pi_? pi_->get_untyped_deleter(): 0;
- }
-};
-
-
-class weak_count
-{
-private:
-
- sp_counted_base * pi_;
-
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- int id_;
-#endif
-
- friend class shared_count;
-
-public:
-
- weak_count(): pi_(0) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(weak_count_id)
-#endif
- {
- }
-
- weak_count(shared_count const & r): pi_(r.pi_) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(weak_count_id)
-#endif
- {
- if(pi_ != 0) pi_->weak_add_ref();
- }
-
- weak_count(weak_count const & r): pi_(r.pi_) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(weak_count_id)
-#endif
- {
- if(pi_ != 0) pi_->weak_add_ref();
- }
-
-// Move support
-
-#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
-
- weak_count(weak_count && r): pi_(r.pi_) // nothrow
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(weak_count_id)
-#endif
- {
- r.pi_ = 0;
- }
-
-#endif
-
- ~weak_count() // nothrow
- {
- if(pi_ != 0) pi_->weak_release();
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- id_ = 0;
-#endif
- }
-
- weak_count & operator= (shared_count const & r) // nothrow
- {
- sp_counted_base * tmp = r.pi_;
-
- if( tmp != pi_ )
- {
- if(tmp != 0) tmp->weak_add_ref();
- if(pi_ != 0) pi_->weak_release();
- pi_ = tmp;
- }
-
- return *this;
- }
-
- weak_count & operator= (weak_count const & r) // nothrow
- {
- sp_counted_base * tmp = r.pi_;
-
- if( tmp != pi_ )
- {
- if(tmp != 0) tmp->weak_add_ref();
- if(pi_ != 0) pi_->weak_release();
- pi_ = tmp;
- }
-
- return *this;
- }
-
- void swap(weak_count & r) // nothrow
- {
- sp_counted_base * tmp = r.pi_;
- r.pi_ = pi_;
- pi_ = tmp;
- }
-
- long use_count() const // nothrow
- {
- return pi_ != 0? pi_->use_count(): 0;
- }
-
- bool empty() const // nothrow
- {
- return pi_ == 0;
- }
-
- friend inline bool operator==(weak_count const & a, weak_count const & b)
- {
- return a.pi_ == b.pi_;
- }
-
- friend inline bool operator<(weak_count const & a, weak_count const & b)
- {
- return std::less<sp_counted_base *>()(a.pi_, b.pi_);
- }
-};
-
-inline shared_count::shared_count( weak_count const & r ): pi_( r.pi_ )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
-{
- if( pi_ == 0 || !pi_->add_ref_lock() )
- {
- boost::throw_exception( boost::bad_weak_ptr() );
- }
-}
-
-inline shared_count::shared_count( weak_count const & r, sp_nothrow_tag ): pi_( r.pi_ )
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
- , id_(shared_count_id)
-#endif
-{
- if( pi_ != 0 && !pi_->add_ref_lock() )
- {
- pi_ = 0;
- }
-}
-
-} // namespace detail
-
-} // namespace boost
-
-#if defined( BOOST_SP_DISABLE_DEPRECATED )
-#pragma GCC diagnostic pop
-#endif
-
-#ifdef __BORLANDC__
-# pragma warn .8027 // Functions containing try are not expanded inline
-#endif
-
-#endif // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED
+#ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED +#define BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED + +// MS compatible compilers support #pragma once + +#if defined(_MSC_VER) && (_MSC_VER >= 1020) +# pragma once +#endif + +// +// detail/shared_count.hpp +// +// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd. +// Copyright 2004-2005 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) +// + +#ifdef __BORLANDC__ +# pragma warn -8027 // Functions containing try are not expanded inline +#endif + +#include <boost/config.hpp> +#include <boost/checked_delete.hpp> +#include <boost/throw_exception.hpp> +#include <boost/smart_ptr/bad_weak_ptr.hpp> +#include <boost/smart_ptr/detail/sp_counted_base.hpp> +#include <boost/smart_ptr/detail/sp_counted_impl.hpp> +#include <boost/smart_ptr/detail/sp_disable_deprecated.hpp> +#include <boost/detail/workaround.hpp> +// 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 <functional> // std::less + +#ifdef BOOST_NO_EXCEPTIONS +# include <new> // std::bad_alloc +#endif + +#include <boost/core/addressof.hpp> + +#if defined( BOOST_SP_DISABLE_DEPRECATED ) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + +namespace boost +{ + +namespace movelib +{ + + template< class T, class D > class unique_ptr; + +} // namespace movelib + +namespace detail +{ + +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + +int const shared_count_id = 0x2C35F101; +int const weak_count_id = 0x298C38A4; + +#endif + +struct sp_nothrow_tag {}; + +template< class D > struct sp_inplace_tag +{ +}; + +template< class T > class sp_reference_wrapper +{ +public: + + explicit sp_reference_wrapper( T & t): t_( boost::addressof( t ) ) + { + } + + template< class Y > void operator()( Y * p ) const + { + (*t_)( p ); + } + +private: + + T * t_; +}; + +template< class D > struct sp_convert_reference +{ + typedef D type; +}; + +template< class D > struct sp_convert_reference< D& > +{ + typedef sp_reference_wrapper< D > type; +}; + +class weak_count; + +class shared_count +{ +private: + + sp_counted_base * pi_; + +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + int id_; +#endif + + friend class weak_count; + +public: + + shared_count(): pi_(0) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + } + + template<class Y> explicit shared_count( Y * p ): pi_( 0 ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { +#ifndef BOOST_NO_EXCEPTIONS + + try + { + pi_ = new sp_counted_impl_p<Y>( p ); + } + catch(...) + { + boost::checked_delete( p ); + throw; + } + +#else + + pi_ = new sp_counted_impl_p<Y>( p ); + + if( pi_ == 0 ) + { + boost::checked_delete( p ); + boost::throw_exception( std::bad_alloc() ); + } + +#endif + } + +#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1200 ) + template<class Y, class D> shared_count( Y * p, D d ): pi_(0) +#else + template<class P, class D> shared_count( P p, D d ): pi_(0) +#endif +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { +#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1200 ) + typedef Y* P; +#endif +#ifndef BOOST_NO_EXCEPTIONS + + try + { + pi_ = new sp_counted_impl_pd<P, D>(p, d); + } + catch(...) + { + d(p); // delete p + throw; + } + +#else + + pi_ = new sp_counted_impl_pd<P, D>(p, d); + + if(pi_ == 0) + { + d(p); // delete p + boost::throw_exception(std::bad_alloc()); + } + +#endif + } + +#if !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING ) + + template< class P, class D > shared_count( P p, sp_inplace_tag<D> ): pi_( 0 ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { +#ifndef BOOST_NO_EXCEPTIONS + + try + { + pi_ = new sp_counted_impl_pd< P, D >( p ); + } + catch( ... ) + { + D::operator_fn( p ); // delete p + throw; + } + +#else + + pi_ = new sp_counted_impl_pd< P, D >( p ); + + if( pi_ == 0 ) + { + D::operator_fn( p ); // delete p + boost::throw_exception( std::bad_alloc() ); + } + +#endif // #ifndef BOOST_NO_EXCEPTIONS + } + +#endif // !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING ) + + template<class P, class D, class A> shared_count( P p, D d, A a ): pi_( 0 ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + typedef sp_counted_impl_pda<P, D, A> impl_type; + +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + typedef typename std::allocator_traits<A>::template rebind_alloc< impl_type > A2; + +#else + + typedef typename A::template rebind< impl_type >::other A2; + +#endif + + A2 a2( a ); + +#ifndef BOOST_NO_EXCEPTIONS + + try + { +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + impl_type * pi = std::allocator_traits<A2>::allocate( a2, 1 ); + pi_ = pi; + std::allocator_traits<A2>::construct( a2, pi, p, d, a ); + +#else + + pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) ); + ::new( static_cast< void* >( pi_ ) ) impl_type( p, d, a ); + +#endif + } + catch(...) + { + d( p ); + + if( pi_ != 0 ) + { + a2.deallocate( static_cast< impl_type* >( pi_ ), 1 ); + } + + throw; + } + +#else + +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + impl_type * pi = std::allocator_traits<A2>::allocate( a2, 1 ); + pi_ = pi; + +#else + + pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) ); + +#endif + + if( pi_ != 0 ) + { +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + std::allocator_traits<A2>::construct( a2, pi, p, d, a ); + +#else + + ::new( static_cast< void* >( pi_ ) ) impl_type( p, d, a ); + +#endif + } + else + { + d( p ); + boost::throw_exception( std::bad_alloc() ); + } + +#endif + } + +#if !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING ) + + template< class P, class D, class A > shared_count( P p, sp_inplace_tag< D >, A a ): pi_( 0 ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + typedef sp_counted_impl_pda< P, D, A > impl_type; + +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + typedef typename std::allocator_traits<A>::template rebind_alloc< impl_type > A2; + +#else + + typedef typename A::template rebind< impl_type >::other A2; + +#endif + + A2 a2( a ); + +#ifndef BOOST_NO_EXCEPTIONS + + try + { +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + impl_type * pi = std::allocator_traits<A2>::allocate( a2, 1 ); + pi_ = pi; + std::allocator_traits<A2>::construct( a2, pi, p, a ); + +#else + + pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) ); + ::new( static_cast< void* >( pi_ ) ) impl_type( p, a ); + +#endif + } + catch(...) + { + D::operator_fn( p ); + + if( pi_ != 0 ) + { + a2.deallocate( static_cast< impl_type* >( pi_ ), 1 ); + } + + throw; + } + +#else + +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + impl_type * pi = std::allocator_traits<A2>::allocate( a2, 1 ); + pi_ = pi; + +#else + + pi_ = a2.allocate( 1, static_cast< impl_type* >( 0 ) ); + +#endif + + if( pi_ != 0 ) + { +#if !defined( BOOST_NO_CXX11_ALLOCATOR ) + + std::allocator_traits<A2>::construct( a2, pi, p, a ); + +#else + + ::new( static_cast< void* >( pi_ ) ) impl_type( p, a ); + +#endif + } + else + { + D::operator_fn( p ); + boost::throw_exception( std::bad_alloc() ); + } + +#endif // #ifndef BOOST_NO_EXCEPTIONS + } + +#endif // !defined( BOOST_NO_FUNCTION_TEMPLATE_ORDERING ) + +#ifndef BOOST_NO_AUTO_PTR + + // auto_ptr<Y> is special cased to provide the strong guarantee + + template<class Y> + explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { +#ifdef BOOST_NO_EXCEPTIONS + + if( pi_ == 0 ) + { + boost::throw_exception(std::bad_alloc()); + } + +#endif + + r.release(); + } + +#endif + +#if !defined( BOOST_NO_CXX11_SMART_PTR ) + + template<class Y, class D> + explicit shared_count( std::unique_ptr<Y, D> & r ): pi_( 0 ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + typedef typename sp_convert_reference<D>::type D2; + + D2 d2( r.get_deleter() ); + pi_ = new sp_counted_impl_pd< typename std::unique_ptr<Y, D>::pointer, D2 >( r.get(), d2 ); + +#ifdef BOOST_NO_EXCEPTIONS + + if( pi_ == 0 ) + { + boost::throw_exception( std::bad_alloc() ); + } + +#endif + + r.release(); + } + +#endif + + template<class Y, class D> + explicit shared_count( boost::movelib::unique_ptr<Y, D> & r ): pi_( 0 ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + typedef typename sp_convert_reference<D>::type D2; + + D2 d2( r.get_deleter() ); + pi_ = new sp_counted_impl_pd< typename boost::movelib::unique_ptr<Y, D>::pointer, D2 >( r.get(), d2 ); + +#ifdef BOOST_NO_EXCEPTIONS + + if( pi_ == 0 ) + { + boost::throw_exception( std::bad_alloc() ); + } + +#endif + + r.release(); + } + + ~shared_count() // nothrow + { + if( pi_ != 0 ) pi_->release(); +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + id_ = 0; +#endif + } + + shared_count(shared_count const & r): pi_(r.pi_) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + if( pi_ != 0 ) pi_->add_ref_copy(); + } + +#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) + + shared_count(shared_count && r): pi_(r.pi_) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif + { + r.pi_ = 0; + } + +#endif + + explicit shared_count(weak_count const & r); // throws bad_weak_ptr when r.use_count() == 0 + shared_count( weak_count const & r, sp_nothrow_tag ); // constructs an empty *this when r.use_count() == 0 + + shared_count & operator= (shared_count const & r) // nothrow + { + sp_counted_base * tmp = r.pi_; + + if( tmp != pi_ ) + { + if( tmp != 0 ) tmp->add_ref_copy(); + if( pi_ != 0 ) pi_->release(); + pi_ = tmp; + } + + return *this; + } + + void swap(shared_count & r) // nothrow + { + sp_counted_base * tmp = r.pi_; + r.pi_ = pi_; + pi_ = tmp; + } + + long use_count() const // nothrow + { + return pi_ != 0? pi_->use_count(): 0; + } + + bool unique() const // nothrow + { + return use_count() == 1; + } + + bool empty() const // nothrow + { + return pi_ == 0; + } + + friend inline bool operator==(shared_count const & a, shared_count const & b) + { + return a.pi_ == b.pi_; + } + + friend inline bool operator<(shared_count const & a, shared_count const & b) + { + return std::less<sp_counted_base *>()( a.pi_, b.pi_ ); + } + + void * get_deleter( sp_typeinfo const & ti ) const + { + return pi_? pi_->get_deleter( ti ): 0; + } + + void * get_untyped_deleter() const + { + return pi_? pi_->get_untyped_deleter(): 0; + } +}; + + +class weak_count +{ +private: + + sp_counted_base * pi_; + +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + int id_; +#endif + + friend class shared_count; + +public: + + weak_count(): pi_(0) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(weak_count_id) +#endif + { + } + + weak_count(shared_count const & r): pi_(r.pi_) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(weak_count_id) +#endif + { + if(pi_ != 0) pi_->weak_add_ref(); + } + + weak_count(weak_count const & r): pi_(r.pi_) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(weak_count_id) +#endif + { + if(pi_ != 0) pi_->weak_add_ref(); + } + +// Move support + +#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) + + weak_count(weak_count && r): pi_(r.pi_) // nothrow +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(weak_count_id) +#endif + { + r.pi_ = 0; + } + +#endif + + ~weak_count() // nothrow + { + if(pi_ != 0) pi_->weak_release(); +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + id_ = 0; +#endif + } + + weak_count & operator= (shared_count const & r) // nothrow + { + sp_counted_base * tmp = r.pi_; + + if( tmp != pi_ ) + { + if(tmp != 0) tmp->weak_add_ref(); + if(pi_ != 0) pi_->weak_release(); + pi_ = tmp; + } + + return *this; + } + + weak_count & operator= (weak_count const & r) // nothrow + { + sp_counted_base * tmp = r.pi_; + + if( tmp != pi_ ) + { + if(tmp != 0) tmp->weak_add_ref(); + if(pi_ != 0) pi_->weak_release(); + pi_ = tmp; + } + + return *this; + } + + void swap(weak_count & r) // nothrow + { + sp_counted_base * tmp = r.pi_; + r.pi_ = pi_; + pi_ = tmp; + } + + long use_count() const // nothrow + { + return pi_ != 0? pi_->use_count(): 0; + } + + bool empty() const // nothrow + { + return pi_ == 0; + } + + friend inline bool operator==(weak_count const & a, weak_count const & b) + { + return a.pi_ == b.pi_; + } + + friend inline bool operator<(weak_count const & a, weak_count const & b) + { + return std::less<sp_counted_base *>()(a.pi_, b.pi_); + } +}; + +inline shared_count::shared_count( weak_count const & r ): pi_( r.pi_ ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif +{ + if( pi_ == 0 || !pi_->add_ref_lock() ) + { + boost::throw_exception( boost::bad_weak_ptr() ); + } +} + +inline shared_count::shared_count( weak_count const & r, sp_nothrow_tag ): pi_( r.pi_ ) +#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) + , id_(shared_count_id) +#endif +{ + if( pi_ != 0 && !pi_->add_ref_lock() ) + { + pi_ = 0; + } +} + +} // namespace detail + +} // namespace boost + +#if defined( BOOST_SP_DISABLE_DEPRECATED ) +#pragma GCC diagnostic pop +#endif + +#ifdef __BORLANDC__ +# pragma warn .8027 // Functions containing try are not expanded inline +#endif + +#endif // #ifndef BOOST_SMART_PTR_DETAIL_SHARED_COUNT_HPP_INCLUDED |