{{ message }}
forked from samd2/interprocess
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathintermodule_singleton_test.cpp
More file actions
327 lines (283 loc) · 9.18 KB
/
Copy pathintermodule_singleton_test.cpp
File metadata and controls
327 lines (283 loc) · 9.18 KB
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
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2004-2012. 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)
//
// See http://www.boost.org/libs/interprocess for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#include <boost/interprocess/detail/intermodule_singleton.hpp>
#include <boost/interprocess/detail/portable_intermodule_singleton.hpp>
#include <iostream>
#include <cstdlib> //for std::abort
using namespace boost::interprocess;
class MyClass
{
public:
MyClass()
{
std::cout << "MyClass()\n" << std::endl;
}
void shout() const
{
std::cout << "Shout\n" << std::endl;
}
~MyClass()
{
std::cout << "~MyClass()\n" << std::endl;
}
};
class MyDerivedClass
: public MyClass
{};
class MyThrowingClass
{
public:
MyThrowingClass()
{
throw int(0);
}
};
template < template<class T, bool LazyInit, bool Phoenix> class IntermoduleType >
int intermodule_singleton_test()
{
bool exception_thrown = false;
bool exception_2_thrown = false;
try{
IntermoduleType<MyThrowingClass, true, false>::get();
}
catch(int &){
exception_thrown = true;
//Second try
try{
IntermoduleType<MyThrowingClass, true, false>::get();
}
catch(interprocess_exception &){
exception_2_thrown = true;
}
}
if(!exception_thrown || !exception_2_thrown){
return 1;
}
MyClass & mc = IntermoduleType<MyClass, true, false>::get();
mc.shout();
IntermoduleType<MyClass, true, false>::get().shout();
IntermoduleType<MyDerivedClass, true, false>::get().shout();
//Second try
exception_2_thrown = false;
try{
IntermoduleType<MyThrowingClass, true, false>::get();
}
catch(interprocess_exception &){
exception_2_thrown = true;
}
if(!exception_2_thrown){
return 1;
}
return 0;
}
//A class simulating a logger
//We'll register constructor/destructor counts
//to test the singleton was correctly resurrected
//by LogUser singleton.
template<class Tag>
class Logger
{
public:
Logger()
{
++constructed_times;
std::cout << "Logger(),tag:" << typeid(Tag).name() << "(construct #" << constructed_times << ")\n" << std::endl;
}
void log_it()
{}
~Logger()
{
++destroyed_times;
std::cout << "~Logger(),tag:" << typeid(Tag).name() << "(destroy #" << destroyed_times << ")\n" << std::endl;
}
static unsigned int constructed_times;
static unsigned int destroyed_times;
};
template<class Tag>
unsigned int Logger<Tag>::constructed_times;
template<class Tag>
unsigned int Logger<Tag>::destroyed_times;
//A class simulating a logger user.
//The destructor uses the logger so that
//the logger is resurrected if it was
//already destroyed
template<class LogSingleton>
class LogUser
{
public:
LogUser()
{
std::cout << "LogUser(),tag:" << typeid(LogSingleton).name() << "\n" << std::endl;
}
void function_using_log()
{ LogSingleton::get().log_it(); }
~LogUser()
{
std::cout << "~LogUser(),tag:" << typeid(LogSingleton).name() << "\n" << std::endl;
LogSingleton::get().log_it();
}
};
//A class that tests the correct
//phoenix singleton behaviour.
//Logger should be resurrected by LogUser
template<class Tag>
class LogPhoenixTester
{
public:
LogPhoenixTester()
{
std::cout << "LogPhoenixTester(), tag: " << typeid(Tag).name() << "\n" << std::endl;
}
void dummy()
{}
~LogPhoenixTester()
{
//Test Phoenix singleton was correctly executed:
//created and destroyed two times
//This test will be executed after main ends
std::cout << "~LogPhoenixTester(), tag: " << typeid(Tag).name() << "\n" << std::endl;
if(Logger<Tag>::constructed_times != Logger<Tag>::destroyed_times ||
Logger<Tag>::constructed_times != 2)
{
std::stringstream sstr;
sstr << "LogPhoenixTester failed for tag ";
sstr << typeid(Tag).name();
sstr << "\n";
if(Logger<Tag>::constructed_times != 2){
sstr << "Logger<Tag>::constructed_times != 2\n";
sstr << "(";
sstr << Logger<Tag>::constructed_times << ")\n";
}
else{
sstr << "Logger<Tag>::constructed_times != Logger<Tag>::destroyed_times\n";
sstr << "(" << Logger<Tag>::constructed_times << " vs. " << Logger<Tag>::destroyed_times << ")\n";
}
std::cout << "~LogPhoenixTester(), error: " << sstr.str() << std::endl;
std::abort();
}
}
};
//A class simulating a logger user.
//The destructor uses the logger so that
//the logger is resurrected if it was
//already destroyed
template<class LogSingleton>
class LogDeadReferenceUser
{
public:
LogDeadReferenceUser()
{
std::cout << "LogDeadReferenceUser(), LogSingleton: " << typeid(LogSingleton).name() << "\n" << std::endl;
}
void function_using_log()
{ LogSingleton::get().log_it(); }
~LogDeadReferenceUser()
{
std::cout << "~LogDeadReferenceUser(), LogSingleton: " << typeid(LogSingleton).name() << "\n" << std::endl;
//Make sure the exception is thrown as we are
//trying to use a dead non-phoenix singleton
try{
LogSingleton::get().log_it();
std::string s("LogDeadReferenceUser failed for LogSingleton ");
s += typeid(LogSingleton).name();
std::cout << "~LogDeadReferenceUser(), error: " << s << std::endl;
std::abort();
}
catch(interprocess_exception &){
//Correct behaviour
}
}
};
template < template<class T, bool LazyInit, bool Phoenix> class IntermoduleType >
int phoenix_singleton_test()
{
typedef int DummyType;
typedef IntermoduleType<DummyType, true, true> Tag;
typedef Logger<Tag> LoggerType;
typedef IntermoduleType<LoggerType, true, true> LoggerSingleton;
typedef LogUser<LoggerSingleton> LogUserType;
typedef IntermoduleType<LogUserType, true, true> LogUserSingleton;
typedef IntermoduleType<LogPhoenixTester<Tag>, true, true> LogPhoenixTesterSingleton;
//Instantiate Phoenix tester singleton so that it will be destroyed the last
LogPhoenixTesterSingleton::get().dummy();
//Now instantitate a log user singleton
LogUserType &log_user = LogUserSingleton::get();
//Then force LoggerSingleton instantiation
//calling a function that will use it.
//After main ends, LoggerSingleton will be destroyed
//before LogUserSingleton due to LIFO
//singleton semantics
log_user.function_using_log();
//Next, LogUserSingleton destructor will resurrect
//LoggerSingleton.
//After that LoggerSingleton will be destroyed and
//lastly LogPhoenixTester will be destroyed checking
//LoggerSingleton was correctly destroyed.
return 0;
}
template < template<class T, bool LazyInit, bool Phoenix> class IntermoduleType >
int dead_reference_singleton_test()
{
typedef int DummyType;
typedef IntermoduleType<DummyType, true, false> Tag;
typedef Logger<Tag> LoggerType;
typedef IntermoduleType<LoggerType, true, false> LoggerSingleton;
typedef LogDeadReferenceUser<LoggerSingleton> LogDeadReferenceUserType;
typedef IntermoduleType<LogDeadReferenceUserType, true, false> LogDeadReferenceUserSingleton;
//Now instantitate a log user singleton
LogDeadReferenceUserType &log_user = LogDeadReferenceUserSingleton::get();
//Then force LoggerSingleton instantiation
//calling a function that will use it.
//After main ends, LoggerSingleton will be destroyed
//before LogDeadReferenceUserType due to LIFO
//singleton semantics
log_user.function_using_log();
//Next, LogDeadReferenceUserType destructor will try to use
//LoggerSingleton and an exception will be raised an catched.
return 0;
}
//reduce name length
template<typename C, bool LazyInit, bool Phoenix>
class port_singleton
: public ipcdetail::portable_intermodule_singleton<C, LazyInit, Phoenix>
{};
#ifdef BOOST_INTERPROCESS_WINDOWS
template<typename C, bool LazyInit, bool Phoenix>
class win_singleton
: public ipcdetail::windows_intermodule_singleton< C, LazyInit, Phoenix>
{};
#endif
int main ()
{
if(0 != intermodule_singleton_test<port_singleton>()){
return 1;
}
#ifdef BOOST_INTERPROCESS_WINDOWS
if(0 != intermodule_singleton_test<win_singleton>()){
return 1;
}
#endif
//Only few platforms support this
#ifdef BOOST_INTERPROCESS_ATEXIT_CALLABLE_FROM_ATEXIT
//Phoenix singletons are tested after main ends,
//LogPhoenixTester does the work
phoenix_singleton_test<port_singleton>();
#ifdef BOOST_INTERPROCESS_WINDOWS
phoenix_singleton_test<win_singleton>();
#endif
#endif
//Dead reference singletons are tested after main ends,
//LogDeadReferenceUser does the work
dead_reference_singleton_test<port_singleton>();
#ifdef BOOST_INTERPROCESS_WINDOWS
dead_reference_singleton_test<win_singleton>();
#endif
return 0;
}
You can’t perform that action at this time.