ceph/src/boost/libs/statechart/include/boost/statechart/asynchronous_state_machine.hpp

   1 #ifndef BOOST_STATECHART_ASYNCHRONOUS_STATE_MACHINE_HPP_INCLUDED
   2 #define BOOST_STATECHART_ASYNCHRONOUS_STATE_MACHINE_HPP_INCLUDED
   3 //////////////////////////////////////////////////////////////////////////////
   4 // Copyright 2002-2006 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/state_machine.hpp>
  12 #include <boost/statechart/fifo_scheduler.hpp>
  13 #include <boost/statechart/null_exception_translator.hpp>
  14 #include <boost/statechart/event_processor.hpp>
  15
  16 #include <memory>   // std::allocator
  17
  18
  19 namespace boost
  20 {
  21 namespace statechart
  22 {
  23
  24
  25
  26 class event_base;
  27
  28
  29
  30 //////////////////////////////////////////////////////////////////////////////
  31 template< class MostDerived,
  32           class InitialState,
  33           class Scheduler = fifo_scheduler<>,
  34           class Allocator = std::allocator< void >,
  35           class ExceptionTranslator = null_exception_translator >
  36 class asynchronous_state_machine : public state_machine<
  37   MostDerived, InitialState, Allocator, ExceptionTranslator >,
  38   public event_processor< Scheduler >
  39 {
  40   typedef state_machine< MostDerived,
  41     InitialState, Allocator, ExceptionTranslator > machine_base;
  42   typedef event_processor< Scheduler > processor_base;
  43   protected:
  44     //////////////////////////////////////////////////////////////////////////
  45     typedef asynchronous_state_machine my_base;
  46
  47     asynchronous_state_machine( typename processor_base::my_context ctx ) :
  48       processor_base( ctx )
  49     {
  50     }
  51
  52     virtual ~asynchronous_state_machine() {}
  53
  54   public:
  55     //////////////////////////////////////////////////////////////////////////
  56     // The following declarations should be private.
  57     // They are only public because many compilers lack template friends.
  58     //////////////////////////////////////////////////////////////////////////
  59     void terminate()
  60     {
  61       processor_base::terminate();
  62     }
  63
  64   private:
  65     //////////////////////////////////////////////////////////////////////////
  66     virtual void initiate_impl()
  67     {
  68       machine_base::initiate();
  69     }
  70
  71     virtual void process_event_impl( const event_base & evt )
  72     {
  73       machine_base::process_event( evt );
  74     }
  75
  76     virtual void terminate_impl()
  77     {
  78       machine_base::terminate();
  79     }
  80 };
  81
  82
  83
  84 } // namespace statechart
  85 } // namespace boost
  86
  87
  88
  89 #endif