1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
// 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 <boost/msm/back/state_machine.hpp>
#include <boost/msm/front/state_machine_def.hpp>
#include <boost/msm/front/functor_row.hpp>
namespace msm = boost::msm;
namespace mpl = boost::mpl;
using namespace msm::front;
#include <iostream>
#ifdef WIN32
#include "windows.h"
#else
#include <sys/time.h>
#endif
namespace test_fsm // Concrete FSM implementation
{
// events
struct play {};
struct end_pause {};
struct stop {};
struct pause {};
struct open_close {};
struct cd_detected{};
// Concrete FSM implementation
struct player_ : public msm::front::state_machine_def<player_>
{
// no need for exception handling or message queue
typedef int no_exception_thrown;
typedef int no_message_queue;
// The list of FSM states
struct Empty : public msm::front::state<>
{
// optional entry/exit methods
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {/*std::cout << "entering: Empty" << std::endl;*/}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {/*std::cout << "leaving: Empty" << std::endl;*/}
};
struct Open : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {/*std::cout << "entering: Open" << std::endl;*/}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {/*std::cout << "leaving: Open" << std::endl;*/}
};
struct Stopped : public msm::front::state<>
{
// when stopped, the CD is loaded
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {/*std::cout << "entering: Stopped" << std::endl;*/}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {/*std::cout << "leaving: Stopped" << std::endl;*/}
};
struct Playing : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {/*std::cout << "entering: Playing" << std::endl;*/}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {/*std::cout << "leaving: Playing" << std::endl;*/}
};
// state not defining any entry or exit
struct Paused : public msm::front::state<>
{
template <class Event,class FSM>
void on_entry(Event const&,FSM& ) {/*std::cout << "entering: Paused" << std::endl;*/}
template <class Event,class FSM>
void on_exit(Event const&,FSM& ) {/*std::cout << "leaving: Paused" << std::endl;*/}
};
// the initial state of the player SM. Must be defined
typedef Empty initial_state;
// transition actions
struct start_playback
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct open_drawer
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct close_drawer
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct store_cd_info
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const&, FSM& fsm ,SourceState& ,TargetState& )
{
}
};
struct stop_playback
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct pause_playback
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct resume_playback
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct stop_and_open
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
struct stopped_again
{
template <class FSM,class EVT,class SourceState,class TargetState>
void operator()(EVT const& ,FSM&,SourceState& ,TargetState& )
{
}
};
// guard conditions
// Transition table for player
struct transition_table : mpl::vector<
// Start Event Next Action Guard
// +---------+-------------+---------+---------------------+----------------------+
Row < Stopped , play , Playing , start_playback >,
Row < Stopped , open_close , Open , open_drawer >,
Row < Stopped , stop , Stopped , stopped_again >,
// +---------+-------------+---------+---------------------+----------------------+
Row < Open , open_close , Empty , close_drawer >,
// +---------+-------------+---------+---------------------+----------------------+
Row < Empty , open_close , Open , open_drawer >,
Row < Empty , cd_detected , Stopped , store_cd_info >,
// +---------+-------------+---------+---------------------+----------------------+
Row < Playing , stop , Stopped , stop_playback >,
Row < Playing , pause , Paused , pause_playback >,
Row < Playing , open_close , Open , stop_and_open >,
// +---------+-------------+---------+---------------------+----------------------+
Row < Paused , end_pause , Playing , resume_playback >,
Row < Paused , stop , Stopped , stop_playback >,
Row < Paused , open_close , Open , stop_and_open >
// +---------+-------------+---------+---------------------+----------------------+
> {};
// Replaces the default no-transition response.
template <class FSM,class Event>
void no_transition(Event const& e, FSM&,int state)
{
std::cout << "no transition from state " << state
<< " on event " << typeid(e).name() << std::endl;
}
};
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
test_fsm::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(test_fsm::open_close());
p2.process_event(test_fsm::open_close());
p2.process_event(test_fsm::cd_detected());
p2.process_event(test_fsm::play());
p2.process_event(test_fsm::pause());
// go back to Playing
p2.process_event(test_fsm::end_pause());
p2.process_event(test_fsm::pause());
p2.process_event(test_fsm::stop());
// event leading to the same state
p2.process_event(test_fsm::stop());
p2.process_event(test_fsm::open_close());
p2.process_event(test_fsm::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;
}
|
