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- //////////////////////////////////////////////////////////////////////////////
- //
- // (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/config_begin.hpp>
- #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;
- }
- #include <boost/interprocess/detail/config_end.hpp>
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