May 2007 - Boost-users - lists.preview.boost.org

[Serialisation] One last GUID question - I hope.
by Hughes, James 03 May '07

03 May '07

It appears that when I put BOOST_CLASS_EXPORT_GUID in class header files, sometimes I get a Multiple definition error for the instance of the guid_initializer, if the header file is included more than once in various bits of code. If the GUID is place in the cpp file there are no problems. I can see why this happens, but the docs appear to imply I should be able to put the definition in the header files, this paragraph below (http://www.boost.org/libs/serialization/doc/serialization.html#pointero perators) "The macro BOOST_CLASS_EXPORT_GUID associates a string literal with a class. In the above example we've used a string rendering of the class name. If a object of such an "exported" class is serialized through a pointer and is otherwise unregistered, the "export" string is included in the archive. When the archive is later read, the string literal is used to find the class which should be created by the serialization library. ****This permits each class to be in a separate header file along with its string identifier****. There is no need to maintain a separate "pre-registration" of derived classes that might be serialized. This method of registration is referred to as "key export". More information on this topic is found in the section Class Traits - Export Key." Is the document misleading here, or have I missed something?? James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

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Regex failure when matching with a POSIX extended regexp
by Roger Leigh 03 May '07

03 May '07

Hi folks, The following code demonstrates the problem I'm having. I'm using Boost 1.33.1 (Debian), but IIRC this worked last year with the same version because I tested it; possibly a Debian-specific regression? I expect both regular expressions here to match with the value string. They certainly to with egrep. However, I only get the second to match: % g++ -c regex.cc -o regex.o && g++ -o regex regex.o -lboost_regex % ./regex It didn't match the first It matched the second Am I correct in my expectation that expression1 will match? If not, what should I be doing to make it match? Many thanks, Roger -- .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail.

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[Serialisation] Question on shared_ptr's and base/derived classes
by Hughes, James 03 May '07

03 May '07

Hi All, I am trying to serialise a vector of shared_ptr's which point to a base class which may be one of a number of derived class (Not polymorphic in that the base class has no virtual functions - its just supplies base functionality to derived classes) In very pseudo code Class A Class B : public A Class C : public A vector<shared_ptr<A> > list; list.insert(shared_ptr<A> (new B)); list.insert(shared_ptr<A> (new C)); In serialise Ar & boost::serialization::make_nvp("ListofStuff", list); Reading the documentation, I believe this should work, but I am getting a bus error on our embedded system when it tries to serialise the vector (all the other bits have serialised ok which implies it's all compiled OK) - it managed "<px" into the XML archive then failed (see below for file). Bus error can mean a number of things on our board, but usually an alignment problem. Anyone any idea where I should look to sort this out? XML output (starts to serialise pointer on last line): <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <temp class_id="0" tracking_level="0" version="0"> <Name>Message1</Name> <Filename class_id="1" tracking_level="0" version="0"> <path>/home/jhughes/msg.xml</path> </Filename> <Panels class_id="2" tracking_level="0" version="0"> <count>1</count> <item class_id="3" tracking_level="0" version="1"> <px</boost_serialization> James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

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[serialisation] XML Archives and BOOST_CLASS_EXPORT_GUID
by Hughes, James 03 May '07

03 May '07

Hello all, This is a corollary to my recent question on serialisation of shred_ptrs and polymorphic classes - I noted it in that thread but it may be lost in the debris. In an effort to get them to work, I have put in a BOOST_CLASS_EXPORT_GUID in my base and derived classes. However, this brings up a compilation error... >>whole load of template faults then... (see below for full error list) ../boost_1_33_1/boost/archive/basic_xml_archive.hpp:66: error : incomplete type 'boost::STATIC_ASSERTION_FAILURE< false>' used in nested name specifier ../boost_1_33_1/boost/archive/basic_xml_archive.hpp:66: error : size of array has non-integral type '<type error>' Now looking at the code where the final error occurs, it says this is usually down to an unspecified NVP - i.e. a serialisation of a data item not in an nvp statements. However, all the classes involved do have this correctly set up. I have one question on it though.. Should I do this in my derived class to include the base class serialisation ar & base_object<A>(*this) Or should I do this ar & base_object<A>(make_nvp("base", *this) ) Both give the same compile error Or is there simply a problem with BOOST_CLASS_EXPORT_GUID that means that it is emitting something that needs nvp wrapping but this isn't being done? James Complete compile error dump for masochists iwmmxt_le-g++ -c -o TextPanel.o TextPanel.cpp -O0 -Iinclude -I../Renderer/include -I../GI/include -I../boost_1_33_1 -I../common/include -fPIC ../boost_1_33_1/boost/archive/basic_xml_oarchive.hpp: In member function `void boost::archive::basic_xml_oarchive<Archive>::save_override(T&, int) [with T = const LCPanel, Archive = boost::archive::xml_oarchive]': ../boost_1_33_1/boost/archive/detail/interface_oarchive.hpp:78: instantiated from `Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = const LCPanel, Archive = boost::archive::xml_oarchive]' ../boost_1_33_1/boost/archive/detail/interface_oarchive.hpp:86: instantiated from `Archive& boost::archive::detail::interface_oarchive<Archive>::operator&(T&) [with T = LCPanel, Archive = boost::archive::xml_oarchive]' include/TextPanel.hpp:115: instantiated from `void LCTextPanel::serialize(Archive&, unsigned int) [with Archive = boost::archive::xml_oarchive]' ../boost_1_33_1/boost/serialization/access.hpp:109: instantiated from `static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_oarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/serialization.hpp:81: instantiated from `void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_oarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/serialization.hpp:140: instantiated from `void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_oarchive, T = LCTextPanel]' ../boost_1_33_1/boost/archive/detail/oserializer.hpp:233: instantiated from `boost::archive::detail::pointer_oserializer<T, Archive>::pointer_oserializer() [with T = LCTextPanel, Archive = boost::archive::xml_oarchive]' ../boost_1_33_1/boost/archive/detail/oserializer.hpp:198: instantiated from `const boost::archive::detail::pointer_oserializer<LCTextPanel, boost::archive::xml_oarchive> boost::archive::detail::pointer_oserializer<LCTextPanel, boost::archive::xml_oarchive>::instance' ../boost_1_33_1/boost/archive/detail/oserializer.hpp:190: instantiated from `static const boost::archive::detail::pointer_oserializer<T, Archive>& boost::archive::detail::pointer_oserializer<T, Archive>::instantiate() [with T = LCTextPanel, Archive = boost::archive::xml_oarchive]' ../boost_1_33_1/boost/archive/detail/oserializer.hpp:515: instantiated from `const boost::archive::detail::basic_pointer_oserializer& boost::archive::detail::instantiate_pointer_oserializer(Archive*, T*) [with Archive = boost::archive::xml_oarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:83: instantiated from `static void boost::archive::detail::export_impl::archive<Archive, T>::o::invoke() [with Archive = boost::archive::xml_oarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:105: instantiated from `static void boost::archive::detail::export_impl::archive<Archive, T>::instantiate() [with Archive = boost::archive::xml_oarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:116: instantiated from `static void boost::archive::detail::export_impl::for_each_archive<ASeq, T>::instantiate() [with ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:132: instantiated from `boost::archive::detail::export_generator<T, ASeq>::export_generator() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:139: instantiated from `const boost::archive::detail::export_generator<LCTextPanel, boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive> > boost::archive::detail::export_generator<LCTextPanel, boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive> >::instance' ../boost_1_33_1/boost/serialization/export.hpp:177: instantiated from `static const boost::archive::detail::export_generator<T, ASeq>* boost::archive::detail::export_instance<T, ASeq>::not_abstract::invoke() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:191: instantiated from `std::pair<const boost::archive::detail::export_generator<T, ASeq>*, const boost::archive::detail::guid_initializer<T>*> boost::archive::detail::export_instance_invoke() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:211: instantiated from `static std::pair<const boost::archive::detail::export_generator<T, ASeq>*, const boost::archive::detail::guid_initializer<T>*> boost::archive::detail::export_archives<T, ASeq>::non_empty_archive_list::invoke() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:225: instantiated from `std::pair<const boost::archive::detail::export_generator<T, ASeq>*, const boost::archive::detail::guid_initializer<T>*> boost::archive::detail::export_archives_invoke(T&, ASeq&) [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' include/TextPanel.hpp:124: instantiated from here ../boost_1_33_1/boost/archive/basic_xml_oarchive.hpp:86: error: incomplete type `boost::STATIC_ASSERTION_FAILURE< false>' used in nested name specifier ../boost_1_33_1/boost/archive/basic_xml_oarchive.hpp:86: error: size of array has non-integral type `<type error>' ../boost_1_33_1/boost/archive/basic_xml_iarchive.hpp: In member function `void boost::archive::basic_xml_iarchive<Archive>::load_override(T&, int) [with T = LCPanel, Archive = boost::archive::xml_iarchive]': ../boost_1_33_1/boost/archive/xml_iarchive.hpp:74: instantiated from `void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = LCPanel, Archive = boost::archive::xml_iarchive]' ../boost_1_33_1/boost/archive/detail/interface_iarchive.hpp:76: instantiated from `Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = LCPanel, Archive = boost::archive::xml_iarchive]' ../boost_1_33_1/boost/archive/detail/interface_iarchive.hpp:83: instantiated from `Archive& boost::archive::detail::interface_iarchive<Archive>::operator&(T&) [with T = LCPanel, Archive = boost::archive::xml_iarchive]' include/TextPanel.hpp:115: instantiated from `void LCTextPanel::serialize(Archive&, unsigned int) [with Archive = boost::archive::xml_iarchive]' ../boost_1_33_1/boost/serialization/access.hpp:109: instantiated from `static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/serialization.hpp:81: instantiated from `void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/serialization.hpp:140: instantiated from `void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = LCTextPanel]' ../boost_1_33_1/boost/archive/detail/iserializer.hpp:339: instantiated from `boost::archive::detail::pointer_iserializer<T, Archive>::pointer_iserializer() [with T = LCTextPanel, Archive = boost::archive::xml_iarchive]' ../boost_1_33_1/boost/archive/detail/iserializer.hpp:211: instantiated from `const boost::archive::detail::pointer_iserializer<LCTextPanel, boost::archive::xml_iarchive> boost::archive::detail::pointer_iserializer<LCTextPanel, boost::archive::xml_iarchive>::instance' ../boost_1_33_1/boost/archive/detail/iserializer.hpp:203: instantiated from `static const boost::archive::detail::pointer_iserializer<T, Archive>& boost::archive::detail::pointer_iserializer<T, Archive>::instantiate() [with T = LCTextPanel, Archive = boost::archive::xml_iarchive]' ../boost_1_33_1/boost/archive/detail/iserializer.hpp:546: instantiated from `const boost::archive::detail::basic_pointer_iserializer& boost::archive::detail::instantiate_pointer_iserializer(Archive*, T*) [with Archive = boost::archive::xml_iarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:75: instantiated from `static void boost::archive::detail::export_impl::archive<Archive, T>::i::invoke() [with Archive = boost::archive::xml_iarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:105: instantiated from `static void boost::archive::detail::export_impl::archive<Archive, T>::instantiate() [with Archive = boost::archive::xml_iarchive, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:116: instantiated from `static void boost::archive::detail::export_impl::for_each_archive<ASeq, T>::instantiate() [with ASeq = boost::mpl::list1<boost::archive::xml_iarchive>, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:122: instantiated from `static void boost::archive::detail::export_impl::for_each_archive<ASeq, T>::instantiate() [with ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>, T = LCTextPanel]' ../boost_1_33_1/boost/serialization/export.hpp:132: instantiated from `boost::archive::detail::export_generator<T, ASeq>::export_generator() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:139: instantiated from `const boost::archive::detail::export_generator<LCTextPanel, boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive> > boost::archive::detail::export_generator<LCTextPanel, boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive> >::instance' ../boost_1_33_1/boost/serialization/export.hpp:177: instantiated from `static const boost::archive::detail::export_generator<T, ASeq>* boost::archive::detail::export_instance<T, ASeq>::not_abstract::invoke() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:191: instantiated from `std::pair<const boost::archive::detail::export_generator<T, ASeq>*, const boost::archive::detail::guid_initializer<T>*> boost::archive::detail::export_instance_invoke() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:211: instantiated from `static std::pair<const boost::archive::detail::export_generator<T, ASeq>*, const boost::archive::detail::guid_initializer<T>*> boost::archive::detail::export_archives<T, ASeq>::non_empty_archive_list::invoke() [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' ../boost_1_33_1/boost/serialization/export.hpp:225: instantiated from `std::pair<const boost::archive::detail::export_generator<T, ASeq>*, const boost::archive::detail::guid_initializer<T>*> boost::archive::detail::export_archives_invoke(T&, ASeq&) [with T = LCTextPanel, ASeq = boost::mpl::list2<boost::archive::xml_oarchive, boost::archive::xml_iarchive>]' include/TextPanel.hpp:124: instantiated from here ../boost_1_33_1/boost/archive/basic_xml_iarchive.hpp:66: error: incomplete type `boost::STATIC_ASSERTION_FAILURE< false>' used in nested name specifier ../boost_1_33_1/boost/archive/basic_xml_iarchive.hpp:66: error: size of array has non-integral type `<type error>' This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

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Re: [Boost-users] [Probability] interest in probability/likelihood library
by Thorsten Ottosen 03 May '07

03 May '07

Brook Milligan skrev: > This note is to announce the release of a library for handling > probability and likelihood quantities, together with their logarithms, > in a consistent and (when desired) transparent manner. > If a native floating point type is used for probabilities and > likelihoods, You should probably define those terms in the documentation. > The purpose of this library is to encapsulate both probability and > likelihood quantities within an appropriate set of types, while > simultaneously achieving the following design goals. > - Incur no runtime cost. That is, all type manipulations should be > performed at compile time. That does not strike me as quite the same. > - Ensure that the layout of arrays and structures of probability and > likelihood quantities is identical to the corresponding layout for > the underlying value type. Good. But It still needs to be testet if the performance equals that of normal arrays or matrices of floats. > Thanks for your input. I hope this library is close to Boost > standards and can be improved to the point of being a worthwhile > inclusion within the set of libraries. It seems like a good start. I can only say, that if the runtime performance cost is zero, then I would find the library very interesting, and I would not hessitate to use it in my work on Bayesian Networks. best regards -Thorsten

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Reminder: Sandbox CVS going DOWN tomorrow
by Doug Gregor 02 May '07

02 May '07

In about 13 hours, the Boost Sandbox CVS will be going offline for the conversion to Subversion. If you have any outstanding changes, please commit them to the sandbox CVS *immediately*. - Doug

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Echoing commands in bjam v2
by Richard Hadsell 02 May '07

02 May '07

I'm building the Boost 1.34.0 beta libraries with g++ on Linux, and I want to see the actual command that bjam uses to compile source files. How can I make it echo the command line? -- Dick Hadsell 914-259-6320 Fax: 914-259-6499 Reply-to: hadsell(a)blueskystudios.com Blue Sky Studios http://www.blueskystudios.com 44 South Broadway, White Plains, NY 10601

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[regex] ECMAScript support?
by Armel Asselin 02 May '07

02 May '07

[sorry if this mail comes twice, I think my first mail was eaten...] Hello, from what I read it seems that boost.regex supports ECMAScript style regular expression. I already use a RE engine (that of Perl built inside wxWidgets), but i'm not really happy with it because it is not ECMA compliant and prevents me from searching in both UTF8 and wchar_t strings and it does not have iterator oriented searches. So my questions: - is boost.regex totally compliant with ECMAScript RE? or at least more than Perl engine? [1.33.1 vs. 1.34 ?] - did I understand well that I can use iterators and have both UTF8 (char*) and wchar_t searches in the same executable build? (thanks to their template nature?) Best regards Armel

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Re: [Boost-users] [serialisation] XML Archives and BOOST_CLASS_EXPORT_GUID
by Pavlo Korzhyk 02 May '07

02 May '07

> Should I do this in my derived class to include the base class > serialisation > > ar & base_object<A>(*this) > > Or should I do this > > ar & base_object<A>(make_nvp("base", *this) ) > > Both give the same compile error I use ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(DBObject); where DBObject is the name of the base class. Does this suit your needs? WBR, Pavlo Korzhyk ICQ#155870780

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Use of Boost C++ Libraries - Academic Environment
by Deisch, Deanna 02 May '07

02 May '07

Good Morning, Does the Boost license cover installation on multiple stations in a Computer Lab for Academic use? Thank you for any assistance I you can provide.

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