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#ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED |
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#define BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED |
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// |
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// enable_shared_from_this.hpp |
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// |
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// Copyright (c) 2002 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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// http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html |
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// |
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#include <boost/weak_ptr.hpp> |
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#include <boost/shared_ptr.hpp> |
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#include <boost/assert.hpp> |
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#include <boost/config.hpp> |
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namespace boost |
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{ |
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template<class T> class enable_shared_from_this |
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{ |
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protected: |
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enable_shared_from_this() |
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{ |
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} |
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enable_shared_from_this(enable_shared_from_this const &) |
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{ |
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} |
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enable_shared_from_this & operator=(enable_shared_from_this const &) |
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{ |
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return *this; |
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} |
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~enable_shared_from_this() |
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{ |
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} |
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public: |
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shared_ptr<T> shared_from_this() |
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{ |
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shared_ptr<T> p(_internal_weak_this); |
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BOOST_ASSERT(p.get() == this); |
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return p; |
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} |
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shared_ptr<T const> shared_from_this() const |
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{ |
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shared_ptr<T const> p(_internal_weak_this); |
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BOOST_ASSERT(p.get() == this); |
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return p; |
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} |
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// Note: No, you don't need to initialize _internal_weak_this |
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// |
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// Please read the documentation, not the code |
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// |
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// http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html |
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typedef T _internal_element_type; // for bcc 5.5.1 |
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mutable weak_ptr<_internal_element_type> _internal_weak_this; |
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}; |
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} // namespace boost |
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#endif // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED |