| // Boost.Signals2 library |
| |
| // Copyright Frank Mori Hess 2007,2009. |
| // Copyright Timmo Stange 2007. |
| // Copyright Douglas Gregor 2001-2004. Use, modification and |
| // distribution is subject to the Boost Software License, Version |
| // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| // Compatibility class to ease porting from the original |
| // Boost.Signals library. However, |
| // boost::signals2::trackable is NOT thread-safe. |
| |
| // For more information, see http://www.boost.org |
| |
| #ifndef BOOST_SIGNALS2_TRACKABLE_HPP |
| #define BOOST_SIGNALS2_TRACKABLE_HPP |
| |
| #include <boost/assert.hpp> |
| #include <boost/shared_ptr.hpp> |
| |
| namespace boost { |
| namespace signals2 { |
| namespace detail |
| { |
| class tracked_objects_visitor; |
| } |
| class trackable { |
| protected: |
| trackable(): _tracked_ptr(static_cast<int*>(0)) {} |
| trackable(const trackable &): _tracked_ptr(static_cast<int*>(0)) {} |
| trackable& operator=(const trackable &) |
| { |
| return *this; |
| } |
| ~trackable() {} |
| private: |
| friend class detail::tracked_objects_visitor; |
| const shared_ptr<void>& get_shared_ptr() const |
| { |
| return _tracked_ptr; |
| } |
| |
| shared_ptr<void> _tracked_ptr; |
| }; |
| } // end namespace signals2 |
| } // end namespace boost |
| |
| #endif // BOOST_SIGNALS2_TRACKABLE_HPP |