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1 | ////////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2004-2012. Distributed under the Boost | |
4 | // Software License, Version 1.0. (See accompanying file | |
5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | // | |
7 | // See http://www.boost.org/libs/interprocess for documentation. | |
8 | // | |
9 | ////////////////////////////////////////////////////////////////////////////// | |
7c673cae FG |
10 | #include <boost/interprocess/detail/intermodule_singleton.hpp> |
11 | #include <boost/interprocess/detail/portable_intermodule_singleton.hpp> | |
12 | #include <iostream> | |
92f5a8d4 | 13 | #include <cstdlib> //for std::abort |
7c673cae FG |
14 | |
15 | using namespace boost::interprocess; | |
16 | ||
17 | class MyClass | |
18 | { | |
19 | public: | |
20 | MyClass() | |
21 | { | |
22 | std::cout << "MyClass()\n" << std::endl; | |
23 | } | |
24 | ||
25 | void shout() const | |
26 | { | |
27 | std::cout << "Shout\n" << std::endl; | |
28 | } | |
29 | ||
30 | ~MyClass() | |
31 | { | |
32 | std::cout << "~MyClass()\n" << std::endl; | |
33 | } | |
34 | }; | |
35 | ||
36 | class MyDerivedClass | |
37 | : public MyClass | |
38 | {}; | |
39 | ||
40 | class MyThrowingClass | |
41 | { | |
42 | public: | |
43 | MyThrowingClass() | |
44 | { | |
45 | throw int(0); | |
46 | } | |
47 | }; | |
48 | ||
49 | ||
50 | template < template<class T, bool LazyInit, bool Phoenix> class IntermoduleType > | |
51 | int intermodule_singleton_test() | |
52 | { | |
53 | bool exception_thrown = false; | |
54 | bool exception_2_thrown = false; | |
55 | ||
1e59de90 | 56 | BOOST_TRY{ |
7c673cae FG |
57 | IntermoduleType<MyThrowingClass, true, false>::get(); |
58 | } | |
1e59de90 | 59 | BOOST_CATCH(int &){ |
7c673cae FG |
60 | exception_thrown = true; |
61 | //Second try | |
1e59de90 | 62 | BOOST_TRY{ |
7c673cae FG |
63 | IntermoduleType<MyThrowingClass, true, false>::get(); |
64 | } | |
1e59de90 | 65 | BOOST_CATCH(interprocess_exception &){ |
7c673cae | 66 | exception_2_thrown = true; |
1e59de90 TL |
67 | } BOOST_CATCH_END |
68 | } BOOST_CATCH_END | |
7c673cae FG |
69 | |
70 | if(!exception_thrown || !exception_2_thrown){ | |
71 | return 1; | |
72 | } | |
73 | ||
74 | MyClass & mc = IntermoduleType<MyClass, true, false>::get(); | |
75 | mc.shout(); | |
76 | IntermoduleType<MyClass, true, false>::get().shout(); | |
77 | IntermoduleType<MyDerivedClass, true, false>::get().shout(); | |
78 | ||
79 | //Second try | |
80 | exception_2_thrown = false; | |
1e59de90 | 81 | BOOST_TRY{ |
7c673cae FG |
82 | IntermoduleType<MyThrowingClass, true, false>::get(); |
83 | } | |
1e59de90 | 84 | BOOST_CATCH(interprocess_exception &){ |
7c673cae | 85 | exception_2_thrown = true; |
1e59de90 | 86 | } BOOST_CATCH_END |
7c673cae FG |
87 | if(!exception_2_thrown){ |
88 | return 1; | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | //A class simulating a logger | |
95 | //We'll register constructor/destructor counts | |
96 | //to test the singleton was correctly resurrected | |
97 | //by LogUser singleton. | |
98 | template<class Tag> | |
99 | class Logger | |
100 | { | |
101 | public: | |
102 | Logger() | |
103 | { | |
104 | ++constructed_times; | |
105 | std::cout << "Logger(),tag:" << typeid(Tag).name() << "(construct #" << constructed_times << ")\n" << std::endl; | |
106 | } | |
107 | ||
108 | void log_it() | |
109 | {} | |
110 | ||
111 | ~Logger() | |
112 | { | |
113 | ++destroyed_times; | |
114 | std::cout << "~Logger(),tag:" << typeid(Tag).name() << "(destroy #" << destroyed_times << ")\n" << std::endl; | |
115 | } | |
116 | ||
117 | static unsigned int constructed_times; | |
118 | static unsigned int destroyed_times; | |
119 | }; | |
120 | ||
121 | template<class Tag> | |
122 | unsigned int Logger<Tag>::constructed_times; | |
123 | ||
124 | template<class Tag> | |
125 | unsigned int Logger<Tag>::destroyed_times; | |
126 | ||
127 | //A class simulating a logger user. | |
128 | //The destructor uses the logger so that | |
129 | //the logger is resurrected if it was | |
130 | //already destroyed | |
131 | template<class LogSingleton> | |
132 | class LogUser | |
133 | { | |
134 | public: | |
135 | LogUser() | |
136 | { | |
137 | std::cout << "LogUser(),tag:" << typeid(LogSingleton).name() << "\n" << std::endl; | |
138 | } | |
139 | ||
140 | void function_using_log() | |
141 | { LogSingleton::get().log_it(); } | |
142 | ||
143 | ~LogUser() | |
144 | { | |
145 | std::cout << "~LogUser(),tag:" << typeid(LogSingleton).name() << "\n" << std::endl; | |
146 | LogSingleton::get().log_it(); | |
147 | } | |
148 | }; | |
149 | ||
150 | //A class that tests the correct | |
151 | //phoenix singleton behaviour. | |
152 | //Logger should be resurrected by LogUser | |
153 | template<class Tag> | |
154 | class LogPhoenixTester | |
155 | { | |
156 | public: | |
157 | LogPhoenixTester() | |
158 | { | |
159 | std::cout << "LogPhoenixTester(), tag: " << typeid(Tag).name() << "\n" << std::endl; | |
160 | } | |
161 | ||
162 | void dummy() | |
163 | {} | |
164 | ||
165 | ~LogPhoenixTester() | |
166 | { | |
167 | //Test Phoenix singleton was correctly executed: | |
168 | //created and destroyed two times | |
169 | //This test will be executed after main ends | |
170 | std::cout << "~LogPhoenixTester(), tag: " << typeid(Tag).name() << "\n" << std::endl; | |
171 | if(Logger<Tag>::constructed_times != Logger<Tag>::destroyed_times || | |
172 | Logger<Tag>::constructed_times != 2) | |
173 | { | |
174 | std::stringstream sstr; | |
175 | sstr << "LogPhoenixTester failed for tag "; | |
176 | sstr << typeid(Tag).name(); | |
177 | sstr << "\n"; | |
178 | if(Logger<Tag>::constructed_times != 2){ | |
179 | sstr << "Logger<Tag>::constructed_times != 2\n"; | |
180 | sstr << "("; | |
181 | sstr << Logger<Tag>::constructed_times << ")\n"; | |
182 | } | |
183 | else{ | |
184 | sstr << "Logger<Tag>::constructed_times != Logger<Tag>::destroyed_times\n"; | |
185 | sstr << "(" << Logger<Tag>::constructed_times << " vs. " << Logger<Tag>::destroyed_times << ")\n"; | |
186 | } | |
92f5a8d4 TL |
187 | std::cout << "~LogPhoenixTester(), error: " << sstr.str() << std::endl; |
188 | std::abort(); | |
7c673cae FG |
189 | } |
190 | } | |
191 | }; | |
192 | ||
193 | //A class simulating a logger user. | |
194 | //The destructor uses the logger so that | |
195 | //the logger is resurrected if it was | |
196 | //already destroyed | |
197 | template<class LogSingleton> | |
198 | class LogDeadReferenceUser | |
199 | { | |
200 | public: | |
201 | LogDeadReferenceUser() | |
202 | { | |
203 | std::cout << "LogDeadReferenceUser(), LogSingleton: " << typeid(LogSingleton).name() << "\n" << std::endl; | |
204 | } | |
205 | ||
206 | void function_using_log() | |
207 | { LogSingleton::get().log_it(); } | |
208 | ||
209 | ~LogDeadReferenceUser() | |
210 | { | |
211 | std::cout << "~LogDeadReferenceUser(), LogSingleton: " << typeid(LogSingleton).name() << "\n" << std::endl; | |
212 | //Make sure the exception is thrown as we are | |
213 | //trying to use a dead non-phoenix singleton | |
1e59de90 | 214 | BOOST_TRY{ |
7c673cae FG |
215 | LogSingleton::get().log_it(); |
216 | std::string s("LogDeadReferenceUser failed for LogSingleton "); | |
217 | s += typeid(LogSingleton).name(); | |
92f5a8d4 TL |
218 | std::cout << "~LogDeadReferenceUser(), error: " << s << std::endl; |
219 | std::abort(); | |
7c673cae | 220 | } |
1e59de90 | 221 | BOOST_CATCH(interprocess_exception &){ |
7c673cae | 222 | //Correct behaviour |
1e59de90 | 223 | } BOOST_CATCH_END |
7c673cae FG |
224 | } |
225 | }; | |
226 | ||
227 | template < template<class T, bool LazyInit, bool Phoenix> class IntermoduleType > | |
228 | int phoenix_singleton_test() | |
229 | { | |
230 | typedef int DummyType; | |
231 | typedef IntermoduleType<DummyType, true, true> Tag; | |
232 | typedef Logger<Tag> LoggerType; | |
233 | typedef IntermoduleType<LoggerType, true, true> LoggerSingleton; | |
234 | typedef LogUser<LoggerSingleton> LogUserType; | |
235 | typedef IntermoduleType<LogUserType, true, true> LogUserSingleton; | |
236 | typedef IntermoduleType<LogPhoenixTester<Tag>, true, true> LogPhoenixTesterSingleton; | |
237 | ||
238 | //Instantiate Phoenix tester singleton so that it will be destroyed the last | |
239 | LogPhoenixTesterSingleton::get().dummy(); | |
240 | ||
241 | //Now instantitate a log user singleton | |
242 | LogUserType &log_user = LogUserSingleton::get(); | |
243 | ||
244 | //Then force LoggerSingleton instantiation | |
245 | //calling a function that will use it. | |
246 | //After main ends, LoggerSingleton will be destroyed | |
247 | //before LogUserSingleton due to LIFO | |
248 | //singleton semantics | |
249 | log_user.function_using_log(); | |
250 | ||
251 | //Next, LogUserSingleton destructor will resurrect | |
252 | //LoggerSingleton. | |
253 | //After that LoggerSingleton will be destroyed and | |
254 | //lastly LogPhoenixTester will be destroyed checking | |
255 | //LoggerSingleton was correctly destroyed. | |
256 | return 0; | |
257 | } | |
258 | ||
259 | template < template<class T, bool LazyInit, bool Phoenix> class IntermoduleType > | |
260 | int dead_reference_singleton_test() | |
261 | { | |
262 | typedef int DummyType; | |
263 | typedef IntermoduleType<DummyType, true, false> Tag; | |
264 | typedef Logger<Tag> LoggerType; | |
265 | typedef IntermoduleType<LoggerType, true, false> LoggerSingleton; | |
266 | typedef LogDeadReferenceUser<LoggerSingleton> LogDeadReferenceUserType; | |
267 | typedef IntermoduleType<LogDeadReferenceUserType, true, false> LogDeadReferenceUserSingleton; | |
268 | ||
269 | //Now instantitate a log user singleton | |
270 | LogDeadReferenceUserType &log_user = LogDeadReferenceUserSingleton::get(); | |
271 | ||
272 | //Then force LoggerSingleton instantiation | |
273 | //calling a function that will use it. | |
274 | //After main ends, LoggerSingleton will be destroyed | |
275 | //before LogDeadReferenceUserType due to LIFO | |
276 | //singleton semantics | |
277 | log_user.function_using_log(); | |
278 | ||
279 | //Next, LogDeadReferenceUserType destructor will try to use | |
280 | //LoggerSingleton and an exception will be raised an catched. | |
281 | return 0; | |
282 | } | |
283 | ||
284 | //reduce name length | |
285 | template<typename C, bool LazyInit, bool Phoenix> | |
286 | class port_singleton | |
287 | : public ipcdetail::portable_intermodule_singleton<C, LazyInit, Phoenix> | |
288 | {}; | |
289 | ||
290 | #ifdef BOOST_INTERPROCESS_WINDOWS | |
291 | template<typename C, bool LazyInit, bool Phoenix> | |
292 | class win_singleton | |
293 | : public ipcdetail::windows_intermodule_singleton< C, LazyInit, Phoenix> | |
294 | {}; | |
295 | #endif | |
296 | ||
297 | int main () | |
298 | { | |
299 | if(0 != intermodule_singleton_test<port_singleton>()){ | |
300 | return 1; | |
301 | } | |
302 | ||
303 | #ifdef BOOST_INTERPROCESS_WINDOWS | |
304 | if(0 != intermodule_singleton_test<win_singleton>()){ | |
305 | return 1; | |
306 | } | |
307 | #endif | |
308 | ||
309 | //Only few platforms support this | |
310 | #ifdef BOOST_INTERPROCESS_ATEXIT_CALLABLE_FROM_ATEXIT | |
311 | //Phoenix singletons are tested after main ends, | |
312 | //LogPhoenixTester does the work | |
313 | phoenix_singleton_test<port_singleton>(); | |
314 | #ifdef BOOST_INTERPROCESS_WINDOWS | |
315 | phoenix_singleton_test<win_singleton>(); | |
316 | #endif | |
317 | #endif | |
318 | ||
319 | //Dead reference singletons are tested after main ends, | |
320 | //LogDeadReferenceUser does the work | |
321 | dead_reference_singleton_test<port_singleton>(); | |
322 | #ifdef BOOST_INTERPROCESS_WINDOWS | |
323 | dead_reference_singleton_test<win_singleton>(); | |
324 | #endif | |
325 | ||
326 | return 0; | |
327 | } |