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// Copyright 2010 Christophe Henry
// henry UNDERSCORE christophe AT hotmail DOT com
// This is an extended version of the state machine available in the boost::mpl library
// Distributed under the same license as the original.
// Copyright for the original version:
// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
// under 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)
#include "stdafx.h"
#include <boost/msm/back/state_machine.hpp>
#include <boost/msm/front/state_machine_def.hpp>
#include <boost/msm/front/euml/euml.hpp>
#include <boost/msm/front/euml/stl.hpp>
namespace msm = boost::msm;
namespace mpl = boost::mpl;
using namespace boost::msm::front::euml;
#include <iostream>
#ifdef WIN32
#include "windows.h"
#else
#include <sys/time.h>
#endif
namespace // Concrete FSM implementation
{
// events
BOOST_MSM_EUML_EVENT(play)
BOOST_MSM_EUML_EVENT(end_pause)
BOOST_MSM_EUML_EVENT(stop)
BOOST_MSM_EUML_EVENT(pause)
BOOST_MSM_EUML_EVENT(open_close)
BOOST_MSM_EUML_EVENT(cd_detected)
BOOST_MSM_EUML_ACTION(start_playback)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(open_drawer)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(close_drawer)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(store_cd_info)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const&, FSM& fsm ,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(stop_playback)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(pause_playback)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(resume_playback)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(stop_and_open)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
BOOST_MSM_EUML_ACTION(stopped_again)
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
// The list of FSM states
BOOST_MSM_EUML_STATE((),Empty)
BOOST_MSM_EUML_STATE((),Open)
BOOST_MSM_EUML_STATE((),Stopped)
BOOST_MSM_EUML_STATE((),Playing)
BOOST_MSM_EUML_STATE((),Paused)
// replaces the old transition table
BOOST_MSM_EUML_TRANSITION_TABLE((
Playing == Stopped + play / start_playback ,
Playing == Paused + end_pause / resume_playback ,
// +------------------------------------------------------------------------------+
Empty == Open + open_close / close_drawer ,
// +------------------------------------------------------------------------------+
Open == Empty + open_close / open_drawer ,
Open == Paused + open_close / stop_and_open ,
Open == Stopped + open_close / open_drawer ,
Open == Playing + open_close / stop_and_open ,
// +------------------------------------------------------------------------------+
Paused == Playing + pause / pause_playback ,
// +------------------------------------------------------------------------------+
Stopped == Playing + stop / stop_playback ,
Stopped == Paused + stop / stop_playback ,
Stopped == Empty + cd_detected / store_cd_info ,
Stopped == Stopped + stop / stopped_again
// +------------------------------------------------------------------------------+
),transition_table)
BOOST_MSM_EUML_ACTION(Log_No_Transition)
{
template <class FSM,class Event>
void operator()(Event const& e,FSM&,int state)
{
std::cout << "no transition from state " << state
<< " on event " << typeid(e).name() << std::endl;
}
};
// create a state machine "on the fly"
BOOST_MSM_EUML_DECLARE_STATE_MACHINE(( transition_table, //STT
init_ << Empty, // Init State
no_action, // Entry
no_action, // Exit
attributes_ << no_attributes_, // Attributes
configure_ << no_exception << no_msg_queue, // configuration
Log_No_Transition // no_transition handler
),
player_) //fsm name
typedef msm::back::state_machine<player_> player;
//
// Testing utilities.
//
static char const* const state_names[] = { "Stopped", "Open", "Empty", "Playing", "Paused" };
void pstate(player const& p)
{
std::cout << " -> " << state_names[p.current_state()[0]] << std::endl;
}
}
#ifndef WIN32
long mtime(struct timeval& tv1,struct timeval& tv2)
{
return (tv2.tv_sec-tv1.tv_sec) *1000000 + ((tv2.tv_usec-tv1.tv_usec));
}
#endif
int main()
{
// for timing
#ifdef WIN32
LARGE_INTEGER res;
::QueryPerformanceFrequency(&res);
LARGE_INTEGER li,li2;
#else
struct timeval tv1,tv2;
gettimeofday(&tv1,NULL);
#endif
player p2;
p2.start();
// for timing
#ifdef WIN32
::QueryPerformanceCounter(&li);
#else
gettimeofday(&tv1,NULL);
#endif
for (int i=0;i<100;++i)
{
p2.process_event(open_close);
p2.process_event(open_close);
p2.process_event(cd_detected);
p2.process_event(play);
p2.process_event(pause);
// go back to Playing
p2.process_event(end_pause);
p2.process_event(pause);
p2.process_event(stop);
// event leading to the same state
p2.process_event(stop);
p2.process_event(open_close);
p2.process_event(open_close);
}
#ifdef WIN32
::QueryPerformanceCounter(&li2);
#else
gettimeofday(&tv2,NULL);
#endif
#ifdef WIN32
std::cout << "msm took in s:" << (double)(li2.QuadPart-li.QuadPart)/res.QuadPart <<"\n" <<std::endl;
#else
std::cout << "msm took in us:" << mtime(tv1,tv2) <<"\n" <<std::endl;
#endif
return 0;
}
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