ceph/src/boost/boost/statechart/event.hpp

   1 #ifndef BOOST_STATECHART_EVENT_HPP_INCLUDED
   2 #define BOOST_STATECHART_EVENT_HPP_INCLUDED
   3 //////////////////////////////////////////////////////////////////////////////
   4 // Copyright 2002-2007 Andreas Huber Doenni
   5 // Distributed under the Boost Software License, Version 1.0. (See accompany-
   6 // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 //////////////////////////////////////////////////////////////////////////////
   8
   9
  10
  11 #include <boost/statechart/event_base.hpp>
  12 #include <boost/statechart/detail/rtti_policy.hpp>
  13 #include <boost/statechart/detail/memory.hpp>
  14
  15 #include <boost/polymorphic_cast.hpp> // boost::polymorphic_downcast
  16
  17 #include <memory> // std::allocator
  18
  19
  20
  21 namespace boost
  22 {
  23 namespace statechart
  24 {
  25
  26
  27
  28 //////////////////////////////////////////////////////////////////////////////
  29 template< class MostDerived, class Allocator = std::allocator< none > >
  30 class event : public detail::rtti_policy::rtti_derived_type<
  31   MostDerived, event_base >
  32 {
  33   public:
  34     //////////////////////////////////////////////////////////////////////////
  35     // Compiler-generated copy constructor and copy assignment operator are
  36     // fine
  37
  38     void * operator new( std::size_t size )
  39     {
  40       return detail::allocate< MostDerived, Allocator >( size );
  41     }
  42
  43     void * operator new( std::size_t, void * p )
  44     {
  45       return p;
  46     }
  47
  48     void operator delete( void * pEvent )
  49     {
  50       detail::deallocate< MostDerived, Allocator >( pEvent );
  51     }
  52
  53     void operator delete( void * pEvent, void * p )
  54     {
  55     }
  56
  57   protected:
  58     //////////////////////////////////////////////////////////////////////////
  59     event() {}
  60     virtual ~event() {}
  61
  62   private:
  63     //////////////////////////////////////////////////////////////////////////
  64     virtual intrusive_ptr< const event_base > clone() const
  65     {
  66       return intrusive_ptr< const event_base >( new MostDerived(
  67         *polymorphic_downcast< const MostDerived * >( this ) ) );
  68     }
  69 };
  70
  71
  72
  73 } // namespace statechart
  74 } // namespace boost
  75
  76
  77
  78 #endif