61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2006-2013
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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/intrusive for documentation.
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//
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/////////////////////////////////////////////////////////////////////////////
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//[doc_entity_code
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#include <boost/intrusive/list.hpp>
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using namespace boost::intrusive;
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//A class that can be inserted in an intrusive list
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class entity : public list_base_hook<>
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{
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public:
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virtual ~entity();
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//...
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};
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//"some_entity" derives from "entity"
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class some_entity : public entity
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{/**/};
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//Definition of the intrusive list
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struct entity_list : list<entity>
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{
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~entity_list()
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{
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// entity's destructor removes itself from the global list implicitly
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while (!this->empty())
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delete &this->front();
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}
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};
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//A global list
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entity_list global_list;
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//The destructor removes itself from the global list
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entity::~entity()
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{ global_list.erase(entity_list::s_iterator_to(*this)); }
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//Function to insert a new "some_entity" in the global list
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void insert_some_entity()
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{ global_list.push_back (*new some_entity(/*...*/)); }
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int main()
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{
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//Insert some new entities
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insert_some_entity();
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insert_some_entity();
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//global_list's destructor will free objects
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return 0;
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}
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//]
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