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#ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
#define BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
//
// enable_shared_from_this.hpp
//
// Copyright (c) 2002 Peter Dimov
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
// http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
//
#include <boost/weak_ptr.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/assert.hpp>
//#include <boost/config.hpp>
namespace boost
{
template<class T> class enable_shared_from_this
{
protected:
enable_shared_from_this()
{
}
enable_shared_from_this(enable_shared_from_this const &)
{
}
enable_shared_from_this & operator=(enable_shared_from_this const &)
{
return *this;
}
~enable_shared_from_this()
{
}
public:
shared_ptr<T> shared_from_this()
{
shared_ptr<T> p(_internal_weak_this);
BOOST_ASSERT(p.get() == this);
return p;
}
shared_ptr<T const> shared_from_this() const
{
shared_ptr<T const> p(_internal_weak_this);
BOOST_ASSERT(p.get() == this);
return p;
}
typedef T _internal_element_type; // for bcc 5.5.1
weak_ptr<_internal_element_type> _internal_weak_this;
};
} // namespace boost
#endif // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED
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