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////////////////////////////////////////////////////////////////////////////// |
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// |
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// (C) Copyright Ion Gaztanaga 2005-2013. |
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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/container for documentation. |
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// |
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////////////////////////////////////////////////////////////////////////////// |
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#ifndef BOOST_CONTAINER_DESTROYERS_HPP |
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#define BOOST_CONTAINER_DESTROYERS_HPP |
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#ifndef BOOST_CONFIG_HPP |
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# include |
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#endif |
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#if defined(BOOST_HAS_PRAGMA_ONCE) |
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# pragma once |
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#endif |
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#include |
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#include |
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#include |
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#include |
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#include |
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namespace boost { |
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namespace container { |
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namespace dtl { |
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//!A deleter for scoped_ptr that deallocates the memory |
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//!allocated for an object using a STL allocator. |
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template |
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struct scoped_deallocator |
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{ |
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typedef allocator_traits allocator_traits_type; |
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typedef typename allocator_traits_type::pointer pointer; |
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typedef dtl::integral_constant
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boost::container::dtl:: |
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version::value> alloc_version; |
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private: |
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void priv_deallocate(version_1) |
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{ m_alloc.deallocate(m_ptr, 1); } |
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void priv_deallocate(version_2) |
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{ m_alloc.deallocate_one(m_ptr); } |
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BOOST_MOVABLE_BUT_NOT_COPYABLE(scoped_deallocator) |
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public: |
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pointer m_ptr; |
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Allocator& m_alloc; |
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scoped_deallocator(pointer p, Allocator& a) |
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: m_ptr(p), m_alloc(a) |
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{} |
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~scoped_deallocator() |
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{ if (m_ptr)priv_deallocate(alloc_version()); } |
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scoped_deallocator(BOOST_RV_REF(scoped_deallocator) o) |
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: m_ptr(o.m_ptr), m_alloc(o.m_alloc) |
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{ o.release(); } |
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pointer get() const |
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{ return m_ptr; } |
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void set(const pointer &p) |
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{ m_ptr = p; } |
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void release() |
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{ m_ptr = 0; } |
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}; |
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template |
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struct null_scoped_deallocator |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::pointer pointer; |
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typedef typename AllocTraits::size_type size_type; |
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null_scoped_deallocator(pointer, Allocator&, size_type) |
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{} |
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void release() |
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{} |
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pointer get() const |
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{ return pointer(); } |
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void set(const pointer &) |
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{} |
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}; |
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//!A deleter for scoped_ptr that deallocates the memory |
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//!allocated for an array of objects using a STL allocator. |
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template |
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struct scoped_array_deallocator |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::pointer pointer; |
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typedef typename AllocTraits::size_type size_type; |
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scoped_array_deallocator(pointer p, Allocator& a, size_type length) |
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: m_ptr(p), m_alloc(a), m_length(length) {} |
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~scoped_array_deallocator() |
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{ if (m_ptr) m_alloc.deallocate(m_ptr, m_length); } |
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void release() |
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{ m_ptr = 0; } |
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private: |
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pointer m_ptr; |
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Allocator& m_alloc; |
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size_type m_length; |
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}; |
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template |
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struct null_scoped_array_deallocator |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::pointer pointer; |
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typedef typename AllocTraits::size_type size_type; |
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null_scoped_array_deallocator(pointer, Allocator&, size_type) |
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{} |
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void release() |
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{} |
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}; |
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template |
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struct scoped_destroy_deallocator |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::pointer pointer; |
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typedef typename AllocTraits::size_type size_type; |
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typedef dtl::integral_constant
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boost::container::dtl:: |
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version::value> alloc_version; |
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scoped_destroy_deallocator(pointer p, Allocator& a) |
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: m_ptr(p), m_alloc(a) {} |
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~scoped_destroy_deallocator() |
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{ |
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if(m_ptr){ |
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AllocTraits::destroy(m_alloc, boost::movelib::to_raw_pointer(m_ptr)); |
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priv_deallocate(m_ptr, alloc_version()); |
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} |
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} |
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void release() |
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{ m_ptr = 0; } |
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private: |
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void priv_deallocate(const pointer &p, version_1) |
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{ AllocTraits::deallocate(m_alloc, p, 1); } |
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void priv_deallocate(const pointer &p, version_2) |
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{ m_alloc.deallocate_one(p); } |
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pointer m_ptr; |
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Allocator& m_alloc; |
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}; |
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//!A deleter for scoped_ptr that destroys |
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//!an object using a STL allocator. |
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template |
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struct scoped_destructor_n |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::pointer pointer; |
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typedef typename AllocTraits::value_type value_type; |
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typedef typename AllocTraits::size_type size_type; |
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scoped_destructor_n(pointer p, Allocator& a, size_type n) |
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: m_p(p), m_a(a), m_n(n) |
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{} |
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void release() |
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{ m_p = 0; } |
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void increment_size(size_type inc) |
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{ m_n += inc; } |
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void increment_size_backwards(size_type inc) |
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{ m_n += inc; m_p -= inc; } |
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void shrink_forward(size_type inc) |
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{ m_n -= inc; m_p += inc; } |
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~scoped_destructor_n() |
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{ |
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if(!m_p) return; |
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value_type *raw_ptr = boost::movelib::to_raw_pointer(m_p); |
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while(m_n--){ |
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AllocTraits::destroy(m_a, raw_ptr++); |
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} |
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} |
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private: |
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pointer m_p; |
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Allocator & m_a; |
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size_type m_n; |
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}; |
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//!A deleter for scoped_ptr that destroys |
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//!an object using a STL allocator. |
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template |
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struct null_scoped_destructor_n |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::pointer pointer; |
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typedef typename AllocTraits::size_type size_type; |
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null_scoped_destructor_n(pointer, Allocator&, size_type) |
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{} |
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void increment_size(size_type) |
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{} |
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void increment_size_backwards(size_type) |
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{} |
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void shrink_forward(size_type) |
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{} |
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void release() |
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{} |
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}; |
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template |
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class scoped_destructor |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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public: |
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typedef typename Allocator::value_type value_type; |
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scoped_destructor(Allocator &a, value_type *pv) |
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: pv_(pv), a_(a) |
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{} |
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~scoped_destructor() |
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{ |
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if(pv_){ |
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AllocTraits::destroy(a_, pv_); |
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} |
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} |
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void release() |
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{ pv_ = 0; } |
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void set(value_type *ptr) { pv_ = ptr; } |
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value_type *get() const { return pv_; } |
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private: |
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value_type *pv_; |
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Allocator &a_; |
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}; |
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template |
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class value_destructor |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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public: |
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typedef Value value_type; |
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value_destructor(Allocator &a, value_type &rv) |
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: rv_(rv), a_(a) |
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{} |
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~value_destructor() |
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{ |
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AllocTraits::destroy(a_, &rv_); |
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} |
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private: |
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value_type &rv_; |
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Allocator &a_; |
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}; |
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template |
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class allocator_destroyer |
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{ |
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typedef boost::container::allocator_traits AllocTraits; |
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typedef typename AllocTraits::value_type value_type; |
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typedef typename AllocTraits::pointer pointer; |
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typedef dtl::integral_constant
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boost::container::dtl:: |
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version::value> alloc_version; |
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private: |
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Allocator & a_; |
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private: |
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void priv_deallocate(const pointer &p, version_1) |
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{ AllocTraits::deallocate(a_,p, 1); } |
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310
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void priv_deallocate(const pointer &p, version_2) |
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{ a_.deallocate_one(p); } |
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313
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public: |
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explicit allocator_destroyer(Allocator &a) |
315
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: a_(a) |
316
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{} |
317
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318
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void operator()(const pointer &p) |
319
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{ |
320
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AllocTraits::destroy(a_, boost::movelib::to_raw_pointer(p)); |
321
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this->priv_deallocate(p, alloc_version()); |
322
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} |
323
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}; |
324
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325
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template |
326
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class allocator_destroyer_and_chain_builder |
327
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{ |
328
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typedef allocator_traits allocator_traits_type; |
329
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typedef typename allocator_traits_type::value_type value_type; |
330
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typedef typename Allocator::multiallocation_chain multiallocation_chain; |
331
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332
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Allocator & a_; |
333
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|
multiallocation_chain &c_; |
334
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335
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public: |
336
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|
allocator_destroyer_and_chain_builder(Allocator &a, multiallocation_chain &c) |
337
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|
: a_(a), c_(c) |
338
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|
{} |
339
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340
|
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|
void operator()(const typename Allocator::pointer &p) |
341
|
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|
{ |
342
|
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|
|
allocator_traits::destroy(a_, boost::movelib::to_raw_pointer(p)); |
343
|
|
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|
|
c_.push_back(p); |
344
|
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|
} |
345
|
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|
}; |
346
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347
|
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|
template |
348
|
|
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|
|
|
|
class allocator_multialloc_chain_node_deallocator |
349
|
|
|
|
|
|
|
{ |
350
|
|
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|
|
|
|
typedef allocator_traits allocator_traits_type; |
351
|
|
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|
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|
|
typedef typename allocator_traits_type::value_type value_type; |
352
|
|
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|
|
|
|
typedef typename Allocator::multiallocation_chain multiallocation_chain; |
353
|
|
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|
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|
|
typedef allocator_destroyer_and_chain_builder chain_builder; |
354
|
|
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|
|
355
|
|
|
|
|
|
|
Allocator & a_; |
356
|
|
|
|
|
|
|
multiallocation_chain c_; |
357
|
|
|
|
|
|
|
|
358
|
|
|
|
|
|
|
public: |
359
|
|
|
|
|
|
|
allocator_multialloc_chain_node_deallocator(Allocator &a) |
360
|
|
|
|
|
|
|
: a_(a), c_() |
361
|
|
|
|
|
|
|
{} |
362
|
|
|
|
|
|
|
|
363
|
|
|
|
|
|
|
chain_builder get_chain_builder() |
364
|
|
|
|
|
|
|
{ return chain_builder(a_, c_); } |
365
|
|
|
|
|
|
|
|
366
|
|
|
|
|
|
|
~allocator_multialloc_chain_node_deallocator() |
367
|
|
|
|
|
|
|
{ |
368
|
|
|
|
|
|
|
a_.deallocate_individual(c_); |
369
|
|
|
|
|
|
|
} |
370
|
|
|
|
|
|
|
}; |
371
|
|
|
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|
|
372
|
|
|
|
|
|
|
} //namespace dtl { |
373
|
|
|
|
|
|
|
} //namespace container { |
374
|
|
|
|
|
|
|
} //namespace boost { |
375
|
|
|
|
|
|
|
|
376
|
|
|
|
|
|
|
#include |
377
|
|
|
|
|
|
|
|
378
|
|
|
|
|
|
|
#endif //#ifndef BOOST_CONTAINER_DESTROYERS_HPP |