July 2013 - Boost-users - lists.preview.boost.org

[Boost.Log] An update on severity level issue
by Leo Carreon 16 Jul '13

16 Jul '13

Hi all, I am still having the issue with the missing severity level string in the logs and have decided to give you my latest code. Here is my current code: #include <iostream> #include <iomanip> #include <cstdlib> #include <fstream> #include <boost/log/core.hpp> #include <boost/log/sources/global_logger_storage.hpp> #include <boost/log/sources/severity_logger.hpp> #include <boost/log/sources/record_ostream.hpp> #include <boost/log/attributes/clock.hpp> #include <boost/log/attributes/current_process_name.hpp> #include <boost/log/attributes/current_process_id.hpp> #include <boost/log/attributes/current_thread_id.hpp> #include <boost/log/utility/setup/file.hpp> #include <boost/log/utility/setup/from_stream.hpp> #include <boost/log/utility/manipulators/to_log.hpp> #include <boost/log/utility/formatting_ostream.hpp> using namespace std; namespace logging = boost::log; namespace keywords = boost::log::keywords; namespace expr = boost::log::expressions; namespace attr = boost::log::attributes; namespace src = boost::log::sources; #define LFC1_LOG_TRACE(logger) BOOST_LOG_SEV(logger, trace) << "(" << __FILE__ << ", " << __LINE__ << ") " #define LFC1_LOG_DEBUG(logger) BOOST_LOG_SEV(logger, debug) << "(" << __FILE__ << ", " << __LINE__ << ") " #define LFC1_LOG_INFO(logger) BOOST_LOG_SEV(logger, info) << "(" << __FILE__ << ", " << __LINE__ << ") " #define LFC1_LOG_WARNING(logger) BOOST_LOG_SEV(logger, warning) << "(" << __FILE__ << ", " << __LINE__ << ") " #define LFC1_LOG_ERROR(logger) BOOST_LOG_SEV(logger, error) << "(" << __FILE__ << ", " << __LINE__ << ") " static const auto RET_SUCCESS = 0; static const auto RET_FAIL = 1; static const auto LOGGING_ENVIRONMENT_NAME = "LOGGING_CONFIG_FILE_NAME"; static const auto DEFAULT_LOGGING_CONFIG_FILE_NAME = "config/LogSettings.txt"; enum ESeverityLevel { trace, debug, info, warning, error }; BOOST_LOG_ATTRIBUTE_KEYWORD(severity, "Severity", ESeverityLevel) ostream& operator<<(ostream& arStream, ESeverityLevel avLevel) { static const char* pStrings[] = { "trace", "debug", "info", "warning", "error" }; if (static_cast<size_t>(avLevel) < sizeof(pStrings) / sizeof(*pStrings)) { arStream << pStrings[avLevel]; } else { arStream << static_cast<int>(avLevel); } return arStream; } logging::formatting_ostream& operator<< ( logging::formatting_ostream& arStream, logging::to_log_manip<ESeverityLevel, tag::severity> const& arManip ) { static const char* pStrings[] = { "TRACE", "DEBUG", "INFO", "WARNING", "ERROR" }; ESeverityLevel vLevel = arManip.get(); if (static_cast<size_t>(vLevel) < sizeof(pStrings) / sizeof(*pStrings)) { arStream << pStrings[vLevel]; } else { arStream << static_cast<int>(vLevel); } return arStream; } BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT(SLogger, src::severity_logger<ESeverityLevel>) static void gvLoggingInit(const char* apConfigFileName = nullptr) { // Obtain the name of the logging configuration file. if (apConfigFileName == nullptr || apConfigFileName[0] == 0) { if ((apConfigFileName = getenv(LOGGING_ENVIRONMENT_NAME)) == 0 || apConfigFileName[0] == 0) { apConfigFileName = DEFAULT_LOGGING_CONFIG_FILE_NAME; } } // Open the logging configuration file. ifstream vConfigFile(apConfigFileName); if (!vConfigFile.is_open()) { // TODO: throw an exception } // Read the contents of the logging configuration file. logging::init_from_stream(vConfigFile); // Add the logging attributes that we require. auto pCore = logging::core::get(); pCore->add_global_attribute("TimeStamp", attr::local_clock()); pCore->add_global_attribute("Process", attr::current_process_name()); pCore->add_global_attribute("ProcessID", attr::current_process_id()); pCore->add_global_attribute("ThreadID", attr::current_thread_id()); pCore->set_filter(severity >= info); } int main() { auto vRetVal = RET_SUCCESS; try { gvLoggingInit(); auto& vLogger = SLogger::get(); LFC1_LOG_TRACE(vLogger) << "A trace severity message"; LFC1_LOG_DEBUG(vLogger) << "A debug severity message"; LFC1_LOG_INFO(vLogger) << "An informational severity message"; LFC1_LOG_WARNING(vLogger) << "A warning severity message"; LFC1_LOG_ERROR(vLogger) << "An error severity message"; } catch (exception& crException) { cerr << crException.what() << endl; vRetVal = RET_FAIL; } catch (...) { cerr << "Unknown exception" << endl; vRetVal = RET_FAIL; } return vRetVal; } Here is what’s in the settings file: [Core] Filter="%Severity% >= 2" DisableLogging=false [Sinks.File] Destination=TextFile FileName=log/test_logging_%N.log RotationSize=1048576 Target=logs MaxSize=10485760 ScanForFiles=All Format="%TimeStamp% [%Severity%] %Process%:%ProcessID%:%ThreadID% %Message%" As mentioned in a previous post, the issue I’m having is this is how the resulting log records look like: 2013-Jul-16 11:24:59.758177 [] test_logging:000000x9f3:0x403cc6c0 (src/test_logging.cpp, 240) An informational severity message 2013-Jul-16 11:24:59.758812 [] test_logging:000000x9f3:0x403cc6c0 (src/test_logging.cpp, 241) A warning severity message 2013-Jul-16 11:24:59.758851 [] test_logging:000000x9f3:0x403cc6c0 (src/test_logging.cpp, 242) An error severity message Note that the severity string is missing from the above log records. Does anyone know I can fix the code to make the severity string show up in the log records? Another question I have is how do I change the format of the date in the timestamp from YYY-MMM-DD to YYYY-MM-DD. I am sticking to using logging settings from a file because I want an application user to be able to control where log records go. However, I am open to the idea of setting the format within the code but at the moment there is no option of setting the format when a settings file is used. It would be nice to have a function within the logging core which allows us to obtain a pointer/reference to the existing sinks. Kind regards, Leo

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Problems include the RANDOM LIBRARIES, in a console project, in Windows.
by Alberto Aliberti 16 Jul '13

16 Jul '13

I used the Random libraries of Boost collection. I have implemented it in my program. A program for the chess analysis . Now, at compile time I have no problem. Everything ok, the console project is compiled without errors. During run time, the functions of Boost Random libraries, correctly generate a random number. But after a few repetitions of the loop (from 2/3 to a few tens of loops), the program crashes. The strange thing that the crash does not occur in the functions where I use the random functions, but occurs in the chess engine that does not use these functions, and thus in theory should not be influenced by it. But if I do not use the functions of Boost library and use the basic function of C + + (rand ();) I have no problems. I work in Windows. My project is a console project compiled with VC + +2010. Also I have wrote a test program with VC + +2010, which generates a sequence of random numbers, using Boost libraries. In this case I have no problems. Only when I implement the libraries in the chess program I have problems. So it seems that your libraries are in conflict with the chess engine. What do you recommend for the search for the cause of the problem? The headers and the function use by me in my program: #include <boost/random/mersenne_twister.hpp> #include <boost/random/uniform_smallint.hpp> // initializes boost random generator seed boost::random::mt19937 gen; // random function int ransel(int minr,int maxr) { boost::random::uniform_smallint <> dist(minr, maxr); return dist(gen); } ________ Then I call the ransel() function in the loop of my program to select the chess moves.

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quick threading query
by Sean Farrow 15 Jul '13

15 Jul '13

Hi all, I have a quick threading query. I'm in the process of rewriting an application to take advantage of concurrency. This application is cross-platform so I'm looking at the boost threading library to solve the issue. When the window is created I'm creating a thread, then when the user chooses to quit I need to notify the created thread to stop running. Would a future do the job, if this is the case where should this be stored in the class that represents the window or in the class that represents the thread, I'm really not wanting to store this globally. Any help appreciated. Cheers Sean.

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1.54.0 breaks bcp-produced partial builds?
by Bruce Stephens 15 Jul '13

15 Jul '13

Back in 1.53.0, I could do the following: ./bootstrap.sh (cd tools/bcp; ../../b2) bin.v2/.../bcp build filesystem .../temp Then in .../temp run ./bootstrap.sh and ./b2 to build just filesystem (or whatever else I copied). In 1.54.0, the copy doesn't build: brs% ./b2 Building the Boost C++ Libraries. /auto/tmpfs/temp/tools/build/v2/build/targets.jam:397: in find-really *** argument error * rule project.is-registered-id ( id ) * called with: ( ) * missing argument id /auto/tmpfs/temp/tools/build/v2/build/project.jam:600:see definition of rule 'project.is-registered-id' being called /auto/tmpfs/temp/tools/build/v2/build/targets.jam:457: in class(a)project-target.find /auto/tmpfs/temp/tools/build/v2/build/targets.jam:841: in resolve-reference /auto/tmpfs/temp/tools/build/v2/build/targets.jam:858: in targets.generate-from-reference /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1245: in generate-dependencies /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1302: in class(a)basic-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:757: in generate-really /auto/tmpfs/temp/tools/build/v2/build/targets.jam:729: in class(a)main-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:272: in class(a)project-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:874: in targets.generate-from-reference /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1245: in generate-dependencies /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1302: in class(a)basic-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:757: in generate-really /auto/tmpfs/temp/tools/build/v2/build/targets.jam:729: in class(a)main-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:874: in targets.generate-from-reference /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1245: in generate-dependencies /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1302: in alias-target-class.generate /auto/tmpfs/temp/boostcpp.jam:391: in build-multiple /auto/tmpfs/temp/boostcpp.jam:353: in class(a)top-level-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:757: in generate-really /auto/tmpfs/temp/tools/build/v2/build/targets.jam:729: in class(a)main-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:874: in targets.generate-from-reference /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1245: in generate-dependencies /auto/tmpfs/temp/tools/build/v2/build/targets.jam:1302: in alias-target-class.generate /auto/tmpfs/temp/boostcpp.jam:391: in build-multiple /auto/tmpfs/temp/boostcpp.jam:353: in class(a)top-level-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:757: in generate-really /auto/tmpfs/temp/tools/build/v2/build/targets.jam:729: in class(a)main-target.generate /auto/tmpfs/temp/tools/build/v2/build/targets.jam:272: in class(a)project-target.generate /auto/tmpfs/temp/tools/build/v2/build-system.jam:707: in load /auto/tmpfs/temp/tools/build/v2/kernel/modules.jam:289: in import /auto/tmpfs/temp/tools/build/v2/kernel/bootstrap.jam:139: in boost-build /auto/tmpfs/temp/boost-build.jam:17: in module scope

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Re: [Boost-users] [Boost.Log] More queries
by Leo Carreon 15 Jul '13

15 Jul '13

From: Leo Carreon Sent: Saturday, July 13, 2013 3:51 PM To: Boost Users Mailing List Subject: [Boost.Log] More queries Hi everyone, As I have mentioned in a previous post, I have been trying to learn how to use Boost.Log. I have been experimenting with logging to a file with filtering and specifying the log formatting in three different ways, namely: 1. Specifying the log formatting using a lambda type expression. 2. Specifying the log formatting using a plain text string with placeholders for the attributes that I have defined. 3. Specifying the log formatting in a settings file. (However, the formatting string is exactly the same as in 2 above.) I have attached a copy of my source code and settings file. Note that I comment out parts of the source code file depending on which option I use above. The problem I’m encountering is when I use options 2 & 3 above, the severity level string does not appear in the log. But if I use option 1, the severity level string appears as expected. It is my understanding that severity level is a pre-defined attribute when using a severity_logger. Am I missing something when using options 2 & 3? If I decide to use my own severity level enumeration, what do I need to do? Kind regards, Leo Hi again everyone, I have managed to use my own severity level enumeration but the severity level string is still not appearing in the log. Regards again, Leo

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boost-libs failed to be built (via pkgsrc)
by Isaac Isao Saito 15 Jul '13

15 Jul '13

Hi boost-users, during source installation of `boost-libs` (link to cvs repo[0]), I get the following at the very end of long output of bmake (`make` that's used in the package manager `pkgsrc` that I use) and build seems to fail: ...skipped <pbin.v2/libs/wave/build/gcc-4.4.2/release/link-static/threading-multi>libboost_wave.a for lack of <pbin.v2/libs/wave/build/gcc-4.4.2/release/link-static/threading-multi>instantiate_cpp_exprgrammar.o... ...skipped <pstage/lib>libboost_wave.a for lack of <pbin.v2/libs/wave/build/gcc-4.4.2/release/link-static/threading-multi>libboost_wave.a... ...failed updating 181 targets... ...skipped 280 targets... *** Error code 1 Stop. bmake: stopped in /usr/pkgsrc/devel/boost-libs *** Error code 1 I noticed, out of thousands of output lines (full output[1]), some lines of error repeatedly appear. I just except some (note that they don't occur back to back like the following): g++: unrecognized option '-pthread' ./boost/cstdint.hpp:74: error: 'intleast8_t' in namespace '::' does not name a type ./boost/cstdint.hpp:76: error: 'uintleast8_t' in namespace '::' does not name a type ./boost/chrono/detail/inlined/posix/chrono.hpp:23: error: '::clock_gettime' has not been declared ./boost/chrono/detail/inlined/posix/chrono.hpp:36: error: '::clock_gettime' has not been declared ./boost/chrono/detail/inlined/posix/process_cpu_clocks.hpp:31: error: '::sysconf' has not been declared ./boost/chrono/detail/inlined/posix/process_cpu_clocks.hpp:31: error: '_SC_CLK_TCK' was not declared in this scope /usr/qnx650/host/qnx6/x86/usr/bin/ntox86-ld: cannot find -lrt ./boost/smart_ptr/detail/yield_k.hpp:123: error: 'nanosleep' was not declared in this scope ./boost/thread/pthread/timespec.hpp:84: error: '::clock_gettime' has not been declared ./boost/thread/pthread/mutex.hpp:275: error: 'boost::chrono::steady_clock' has not been declared libs/filesystem/src/operations.cpp: In function 'bool<unnamed>::remove_directory(const boost::filesystem::path&)': libs/filesystem/src/operations.cpp:345: error: '::rmdir' has not been declared libs/filesystem/src/operations.cpp:348: error: '::unlink' has not been declared libs/filesystem/src/operations.cpp:427: error: no matching function for call to 'stat::stat(const char*, stat*)' libs/filesystem/src/operations.cpp:1003: error: '::symlink' has not been declared ``` Other `boost`-related packages (namely boost-headers, boost-jam, boost-docs, boost-build) are already built and installed. `boost-python` fails to be built, but I assume it's not depended by boost-libs. Using `QNX` 6.5.0 SDP SP1. boost seems to be 1.53.0 What could be wrong? Thank you very much. [0] http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/devel/boost-libs/#dirlist [1] http://pastebin.com/ZMU3ddXf -- Isaac

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From Big-endian to Little-endian.
by Mauro Ziliani 15 Jul '13

15 Jul '13

Hi all. This is my first post. I'm working with boost::asio::ip::tcp to dialogate with a peripheral which send frames grouped in words (16 bit values). The peripheral uses a big-endian byte-order, while the host uses a little-endian byte-order. Is there some template which makes the swap automatically? Best regards, Mauro

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VS2012: libboost_filesystem-vc110-mt-gd-1_54.lib missing
by Amann, Julian 15 Jul '13

15 Jul '13

Hello, I built boost 1.54.0 with Visual Studio 2012 x64. I tried to build a small demo that is using boost filesystem: ///////////////////////////////////////////////////////////////////// #include <iostream> #include <boost/filesystem.hpp> using namespace boost::filesystem; int main(int argc, char* argv[]) { if (argc < 2) { std::cout << "Usage: tut1 path\n"; return 1; } std::cout << argv[1] << " " << file_size(argv[1]) << '\n'; return 0; } ///////////////////////////////////////////////////////////////////// CMake is used to setup the corresponding project for VS2012 x64: ################################################# CMAKE_MINIMUM_REQUIRED(VERSION 2.8.9) PROJECT(FilesystemTest) set_property(GLOBAL PROPERTY USE_FOLDERS ON) SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/build/) # Visual Studio 2010 Pro Standard: /DWIN32 /D_WINDOWS /W3 /Zm1000 /EHsc /GR SET(CMAKE_CXX_FLAGS "/DWIN32 /D_WINDOWS /W4 /Zi /EHsc /GR- /MP /openmp") SET(CMAKE_DEBUG_POSTFIX "d") FIND_PACKAGE(Boost COMPONENTS filesystem system REQUIRED) # Unicode rules! ADD_DEFINITIONS(-D_UNICODE) include_directories(${Boost_INCLUDE_DIR}) LINK_DIRECTORIES( ${Boost_LIBRARY_DIRS} ) file(GLOB FilesystemTest_SOURCES src/*.*) # Create a target for the library ADD_EXECUTABLE(FilesystemTest ${FilesystemTest_SOURCES}) ################################################# But when compiling I get 'libboost_filesystem-vc110-mt-gd-1_54.lib' is missing. Previously I used boost 1.53.0 - everything was working perfect when using boost 1.53.0. When looking into the boost 1.54 lib folder there is only a 'boost_filesystem-vc110-mt-gd-1_54.lib' and a 'libboost_filesystem-vc110-mt-sgd-1_54.lib' I compiled boost using this instructions: 1. Download boost 1.54.0 from http://www.boost.org/ 2. Extract files (e.g. "C:\thirdparty\vs2013\x64\boost_1_54_0") 3. Start Visual Studio 2012 x64 command prompt 4. Change to boost directory (e.g. "cd C:\thirdparty\vs2010\x64\boost_1_54_0") 5. Execute .\bootstrap.bat 6. Execute b2 address-model=64 toolset=msvc-11.0 --build-type=complete stage BTW: If only certain libraries (for instance filesystem) are need step 6 can be replaced by this: b2 address-model=64 toolset=msvc-11.0 --build-type=complete stage --with-filesystem --with-signals --with-system I could not figure out what is working wrong. Any ideas? Best regards Julian

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issues compiling Boost 1.54 thread on AIX5.2
by Gert 15 Jul '13

15 Jul '13

Any clues here? Regards, Gert vacpp.compile.c++ bin.v2/libs/thread/build/vacpp/debug/address-model-64/link-static/runtime-link-static/threading-multi/pthread/thread.o xlC_r -c -DBOOST_ALL_NO_LIB=1 -DBOOST_SYSTEM_STATIC_LINK=1 -DBOOST_THREAD_BUILD_LIB=1 -DBOOST_THREAD_DONT_USE_CHRONO -DBOOST_THREAD_POSIX -qcpluscmt -qNOOPTimize -qnoinline -q64 -g -qfullpath -qfuncsect -qeh -qrtti -I"." -o "bin .v2/libs/thread/build/vacpp/debug/address-model-64/link-static/runtime-link-static/threading-multi/pthread/thread.o" "libs/thread/src/pthread/thread.cpp" "./boost/smart_ptr/shared_ptr.hpp", line 82.43: 1540-0403 (S) "template <class T, std::size_t N> struct boost::detail::sp_element<T [N]>" is already defined. "./boost/smart_ptr/shared_ptr.hpp", line 75.28: 1540-0425 (I) "sp_element<T []>" is defined on line 75 of "./boost/smart_ptr/shared_ptr.hpp". "./boost/smart_ptr/shared_ptr.hpp", line 131.43: 1540-0403 (S) "template <class T, std::size_t N> struct boost::detail::sp_dereference<T [N]>" is already defined. "./boost/smart_ptr/shared_ptr.hpp", line 124.28: 1540-0425 (I) "sp_dereference<T []>" is defined on line 124 of "./boost/smart_ptr/shared_ptr.hpp". "./boost/smart_ptr/shared_ptr.hpp", line 156.43: 1540-0403 (S) "template <class T, std::size_t N> struct boost::detail::sp_member_access<T [N]>" is already defined. "./boost/smart_ptr/shared_ptr.hpp", line 149.28: 1540-0425 (I) "sp_member_access<T []>" is defined on line 149 of "./boost/smart_ptr/shared_ptr.hpp". "./boost/smart_ptr/shared_ptr.hpp", line 181.43: 1540-0403 (S) "template <class T, std::size_t N> struct boost::detail::sp_array_access<T [N]>" is already defined. "./boost/smart_ptr/shared_ptr.hpp", line 174.28: 1540-0425 (I) "sp_array_access<T []>" is defined on line 174 of "./boost/smart_ptr/shared_ptr.hpp". "./boost/thread/detail/async_func.hpp", line 94.58: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 166.54: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 231.50: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 291.46: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 346.42: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 396.38: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 441.34: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 481.30: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 516.26: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/detail/async_func.hpp", line 546.22: 1540-0711 (S) Too few template arguments have been specified. "./boost/thread/cv_status.hpp", line 23.3: 1540-0219 (S) The call to "operator==" has no best match. "./boost/thread/cv_status.hpp", line 23.3: 1540-1229 (I) Argument number 1 is an rvalue of type "boost::cv_status::enum_type". "./boost/thread/cv_status.hpp", line 23.3: 1540-1229 (I) Argument number 2 is an rvalue of type "boost::cv_status::enum_type". "./boost/thread/cv_status.hpp", line 23.3: 1540-1202 (I) No candidate is better than "builtin operator==(int, int)". "./boost/thread/cv_status.hpp", line 23.3: 1540-1231 (I) The conversion from argument number 1 to "int" uses "an integral promotion". "./boost/thread/cv_status.hpp", line 23.3: 1540-1231 (I) The conversion from argument number 2 to "int" uses "an integral promotion". "./boost/thread/cv_status.hpp", line 23.3: 1540-1202 (I) No candidate is better than "boost::operator==(self_type, enum_type)". "./boost/thread/cv_status.hpp", line 23.3: 1540-1231 (I) The conversion from argument number 1 to "boost::cv_status" uses the user-defined conversion "boost::cv_status::cv_status(enum_type)" followed by "an lvalue-to-rvalue transformatio n". ... ... -- View this message in context: http://boost.2283326.n4.nabble.com/issues-compiling-Boost-1-54-thread-on-AI… Sent from the Boost - Users mailing list archive at Nabble.com.

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[serialization] unregistered class exception during serialization from DLL
by Andreas Mainik 14 Jul '13

14 Jul '13

Hello All, I have some classes needed to be serialized (A.HPP und A.CPP below). The serialization happens over the pointer to the base class. The code is called in the function (FUNC.CPP below). The files A.HPP, A.CPP and FUNC.CPP are constituents of a bigger DLL-library. If my test application is linked dynamical against the DLL-libary then the code throws an exception "unregistered class - derived class not registered or exported". What is wrong in my code? The code is compiled with Visual Studio 2012 (default settings). Boost: 1.53.0 If I look into BOOST_SERIALIZATION_DECL(const extended_type_info *) extended_type_info_typeid_0::get_extended_type_info( const std::type_info & ti ) const { typeid_system::extended_type_info_typeid_arg etia(ti); const tkmap & t = singleton<tkmap>::get_const_instance(); const tkmap::const_iterator it = t.find(& etia); if(t.end() == it) return NULL; return *(it); } then I see that Ord<Options> is not registered in singleton<tkmap>::get_const_instance(). Moreover, I am not able to set breakpoint into Ord<Options>::serialize(). According to MSVC debugger the breakpoint will not be hit. Additional remarks: 1) If I uncomment the code lines in FUNC.CPP then everything works. 2) If I link the code statical to my test application then everything is also fine. -----------------------A.HPP----------------------------------------------- #include "archive.hpp" // includes the required headers struct OrdBasis { virtual ~OrdBasis() {} virtual bool is_base_of(const boost::shared_ptr<OrdBasis>& derived_ptr) { return true; } private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */){ } }; template<typename P> struct Ord; struct Options { Options() {} friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */){ } }; template<> class Ord<Options> : public OrdBasis { typedef Ord<Options> P; bool is_base_of(const boost::shared_ptr<OrdBasis>& derived_ptr) { const boost::shared_ptr<P> base_ptr = boost::dynamic_pointer_cast<P>(derived_ptr); bool result = (base_ptr) ? true : false; return result; } private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */){ ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(OrdBasis); } }; BOOST_CLASS_EXPORT_KEY(Ord<Options>) -----------------------A.HPP------------------------------------------- -----------------------A.CPP------------------------------------------- #include "A.hpp" BOOST_CLASS_EXPORT_IMPLEMENT(Ord<Options>) -----------------------A.CPP------------------------------------------- I serialize with following sequence ---------------------FUNC.CPP------------------------------------------ void serializeFunc() { namespace io = boost::iostreams; typedef std::vector<char> buffer_type; buffer_type buffer; buffer.reserve(2000000); { buffer.clear(); io::stream<io::back_insert_device<buffer_type> > output_stream(buffer); boost::archive::binary_oarchive oa(output_stream, boost::archive::no_header); // begin //if the following lines are commented out then everything works //boost::shared_ptr<Ord<Options>> testOptOrd(new Ord<Options>); //oa & testOptOrd; //end boost::shared_ptr<OrdBasis> testOptOrdB(new Ord<Options>); oa & testOptOrdB; } { io::basic_array_source<char> source(&buffer[0],buffer.size()); io::stream<io::basic_array_source <char> > input_stream(source); boost::archive::binary_iarchive ia(input_stream, boost::archive::no_header); boost::shared_ptr<OrdBasis> testOptOrd; // begin linked to the above code block //ia & testOptOrd; // end ia & testOptOrd; int i = 0; } } -----------------------FUNC.CPP------------------------------------ -- Using Opera's revolutionary email client: http://www.opera.com/mail/

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