-#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;
- }
-
-// Note: No, you don't need to initialize _internal_weak_this
-//
-// Please read the documentation, not the code
-//
-// http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html
-
- typedef T _internal_element_type; // for bcc 5.5.1
- mutable weak_ptr<_internal_element_type> _internal_weak_this;
-};
-
-} // namespace boost