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168 lines
3.9 KiB
C++
168 lines
3.9 KiB
C++
#ifndef BOOST_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
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#define BOOST_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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// detail/sp_counted_impl.hpp
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//
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// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
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// Copyright 2004-2005 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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#include <boost/config.hpp>
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#if defined(BOOST_SP_USE_STD_ALLOCATOR) && defined(BOOST_SP_USE_QUICK_ALLOCATOR)
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# error BOOST_SP_USE_STD_ALLOCATOR and BOOST_SP_USE_QUICK_ALLOCATOR are incompatible.
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#endif
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#include <boost/checked_delete.hpp>
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#include <boost/detail/sp_counted_base.hpp>
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#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
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#include <boost/detail/quick_allocator.hpp>
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#endif
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#include <memory> // std::allocator
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#include <typeinfo> // std::type_info in get_deleter
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#include <cstddef> // std::size_t
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namespace boost
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{
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// Debug hooks
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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void sp_scalar_constructor_hook(void * px, std::size_t size, void * pn);
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void sp_array_constructor_hook(void * px);
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void sp_scalar_destructor_hook(void * px, std::size_t size, void * pn);
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void sp_array_destructor_hook(void * px);
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#endif
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namespace detail
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{
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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template<class T> void cbi_call_constructor_hook(sp_counted_base * pn, T * px, checked_deleter<T> const &, int)
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{
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boost::sp_scalar_constructor_hook(px, sizeof(T), pn);
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}
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template<class T> void cbi_call_constructor_hook(sp_counted_base *, T * px, checked_array_deleter<T> const &, int)
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{
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boost::sp_array_constructor_hook(px);
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}
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template<class P, class D> void cbi_call_constructor_hook(sp_counted_base *, P const &, D const &, long)
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{
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}
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template<class T> void cbi_call_destructor_hook(sp_counted_base * pn, T * px, checked_deleter<T> const &, int)
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{
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boost::sp_scalar_destructor_hook(px, sizeof(T), pn);
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}
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template<class T> void cbi_call_destructor_hook(sp_counted_base *, T * px, checked_array_deleter<T> const &, int)
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{
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boost::sp_array_destructor_hook(px);
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}
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template<class P, class D> void cbi_call_destructor_hook(sp_counted_base *, P const &, D const &, long)
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{
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}
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#endif
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//
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// Borland's Codeguard trips up over the -Vx- option here:
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//
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#ifdef __CODEGUARD__
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# pragma option push -Vx-
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#endif
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template<class P, class D> class sp_counted_impl_pd: public sp_counted_base
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{
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private:
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P ptr; // copy constructor must not throw
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D del; // copy constructor must not throw
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sp_counted_impl_pd(sp_counted_impl_pd const &);
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sp_counted_impl_pd & operator= (sp_counted_impl_pd const &);
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typedef sp_counted_impl_pd<P, D> this_type;
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public:
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// pre: d(p) must not throw
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sp_counted_impl_pd(P p, D d): ptr(p), del(d)
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{
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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detail::cbi_call_constructor_hook(this, p, d, 0);
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#endif
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}
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virtual void dispose() // nothrow
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{
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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detail::cbi_call_destructor_hook(this, ptr, del, 0);
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#endif
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del(ptr);
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}
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virtual void * get_deleter(std::type_info const & ti)
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{
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return ti == typeid(D)? &del: 0;
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}
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#if defined(BOOST_SP_USE_STD_ALLOCATOR)
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void * operator new(std::size_t)
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{
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return std::allocator<this_type>().allocate(1, static_cast<this_type *>(0));
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}
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void operator delete(void * p)
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{
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std::allocator<this_type>().deallocate(static_cast<this_type *>(p), 1);
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}
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#endif
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#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
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void * operator new(std::size_t)
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{
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return quick_allocator<this_type>::alloc();
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}
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void operator delete(void * p)
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{
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quick_allocator<this_type>::dealloc(p);
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}
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#endif
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};
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#ifdef __CODEGUARD__
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# pragma option pop
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#endif
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} // namespace detail
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} // namespace boost
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#endif // #ifndef BOOST_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED
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