1 // Boost.Signals2 library
2 
3 // Copyright Frank Mori Hess 2007-2010.
4 // Use, modification and
5 // distribution is subject to the Boost Software License, Version
6 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt)
8 
9 // For more information, see http://www.boost.org
10 
11 #ifndef BOOST_SIGNALS2_EXPIRED_SLOT_HPP
12 #define BOOST_SIGNALS2_EXPIRED_SLOT_HPP
13 
14 #include <boost/smart_ptr/bad_weak_ptr.hpp>
15 
16 namespace boost
17 {
18   namespace signals2
19   {
20     class expired_slot: public bad_weak_ptr
21     {
22     public:
what() const23       virtual char const * what() const throw()
24       {
25         return "boost::signals2::expired_slot";
26       }
27     };
28   }
29 } // end namespace boost
30 
31 #endif // BOOST_SIGNALS2_EXPIRED_SLOT_HPP
32