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QuickBook
by OvermindDL1 16 Aug '10

16 Aug '10

Attempting to use QuickBook to create both HTML and PDF documentation. First of all, compiled just about everything I can compile in boost, including about all the tools, on Ubuntu. I created a directory named qb_test. I created a file called test.qbk and filled it with: """ [article TestingArticle [quickbook 1.5] [version 0.1] [authors [, OvermindDL1]] [copyright 2010 OvermindDL1] [/ [purpose /WikiWiki/ style documentation tool]] [id test] ] [section:intro Introduction] This is just a simple testing thing, we shall see how it works overall... [endsect] [section:change_log Change Log] [h3 Version 0.1] * Initial creation... * Two pages setup, intro and change_log [endsect] """ I ran: """ quickbook test.qbk """ It created a test.xml file, not quite what I was looking for, I take it that it does not call boostbook directly... So then I started looking for how to call boostbook and became pretty lost, for some reason I recall this being easier on Windows... Decided to try to use bjam (although the project this is eventually going into uses CMake, so no bjam eventually...), made a Jamfile containing: """ project test import boostbook : boostbook ; boostbook test : test.qbk : <include>. ; """ And running bjam complains about not having found boost, which makes sense since boost was build as a different user so its building directory is inaccessible. Basically I want to build a quickbook documentation for another very large C++ project that itself uses CMake, how would I go about doing this? The quickbook documentation is lacking in how to get a finished html/pdf/etc...

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About naming of integer log in base 2
by Murilo Adriano Vasconcelos 16 Aug '10

16 Aug '10

Hi all, I implemented a function [0] wich computes the logarithm in base two of integers and want to know what naming is most appropriated: ilog2 or simply log2 [0] - http://svn.boost.org/svn/boost/sandbox/SOC/2010/bits_and_ints/boost/integer… Best, -- Murilo Adriano Vasconcelos http://murilo.wordpress.com

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How to access a GRAPH property? - simple
by Mike Douglass 16 Aug '10

16 Aug '10

I have struct vertex_properties { blah blah } struct edge_properties { blah blah } struct graph_properties { int bobo; } typedef adjacency_list < vecS, vecS, bidirectionalS, property< vertex_predecessor_t, vertex_t, vertex_properties >, property< edge_reverse_t, edge_t, edge_properties >, graph_properties > graph_t; graph_t g; But how can I access bobo? g.bobo; does not compile (otherwise compiles OK). thanks

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boost::bind with template
by Kraus Philipp 15 Aug '10

15 Aug '10

Hi, I would like to create a thread group for my "worker objects" like: std::vector< worker<T,D> > l_worker; boost::thread_group l_threads; for(std::size_t i=0; i < p_threads; ++i) { l_worker.push_back( worker<T,D>(p_iteration, p_stepsize, m_derivation, m_optimize, m_static, p_batch) ); l_threads.create_thread( boost::bind( &worker<T,D>::optimize ), l_worker[i] ); (*) } I get a compiler error at (*) on boost/bind/bind.hpp: In instantiation of 'boost::_bi::result_traits<boost::_bi::unspecified, void (worker<double, 2ul>::*)()>': error: 'void (worker<double, 2ul>::*)()' is not a class, struct, or union type boost/bind/bind_template.hpp:15: instantiated from 'boost::_bi::bind_t<boost::_bi::unspecified, void (worker<double, 2ul>::*)(), boost::_bi::list0>' The variables T is a typename and D is std::size_t > 0 How can I bind my template object (<doube, 2>) to the create_thread methode? Thanks Phil

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[asio] Crash in io_service::run()
by Germán Diago 15 Aug '10

15 Aug '10

Hello. I have a client application that accesses a server, both coded with Boost.Asio. The code in the client is like this: Client::Client() : socket_(service_), work_(service_) { } void Client::connectWith(const std::string & hostname, int puerto, const std::string & nombre, int equipo) { using namespace boost::asio::ip; tcp::resolver resolver(service_); tcp::resolver::query query(tcp::v4(), hostname, std::to_string(puerto)); tcp::resolver::iterator endpoint_iterator = resolver.resolve(query), endpoint_end; tcp::endpoint endpoint = *endpoint_iterator; socket_.async_connect(endpoint, boost::bind(&Cliente::handleConnect, this, boost::asio::placeholders::error, ++endpoint_iterator)); std::thread([&] {service_.run(); }); } void Client::handleConnect(const boost::system::error_code & e, boost::asio::ip::tcp::resolver::iterator endpoint_iterator) { if (!e) { } else if (endpoint_iterator != boost::asio::ip::tcp::resolver::iterator()) { socket_.close(); boost::asio::ip::tcp::endpoint endpoint = *endpoint_iterator; socket_.async_connect(endpoint, boost::bind(&Cliente::handleConnect, this, boost::asio::placeholders::error, ++endpoint_iterator)); } else { std::cerr << e.message() << std::endl; } } My application crashes when calling Client::connectWith when I run the io_service::run() function in another thread, which is what I exactly want to do. If I run io_service::run() in the same thread, everything is ok. Anyone knows why? This is a GUI application, maybe it's a problem with gtkmm interaction and threads? Anyway, I would like how to handle to run io_service's run() in another thread. Thanks in advance.

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[statechart] LNK2001 revisited
by Noah Roberts 15 Aug '10

15 Aug '10

Found a related post dated Jul 2007: http://old.nabble.com/-statechart-LNK2001-Error-on-VC-8.0- td11748021.html Attempted use of /Gm of course did not fix the problem (not sure why the OP did that to begin with as it's pretty much incompatible with building for release). Information in this thread lead to an *apparent* sollution: http://thread.gmane.org/gmane.comp.lib.boost.user/23065 But I'm not really impressed by that sollution and the commentary on it lead me to believe that I should not need it since I'm not making a library. The issue appears when I set the /Yu flag (use precompiled headers) in Visual Studio 2010. (10.0.30319.1) Without this flag active the program eventually compiles and links without issue. With the flag active I get exactly the same error as the OP though this is not regarding the tutorial code, which I have not tested. I also have to set /Zm200 or the build doesn't even get started (something about the space not being large enough for my 50 line header). The precompiled header is NOT including anything in boost statechart. The only boost related includes are: #define BOOST_PARAMETER_MAX_ARITY 20 #include <boost/cast.hpp> #include <boost/bind.hpp> #include <boost/format.hpp> #include <boost/parameter.hpp> #include <boost/signals2.hpp> #include <boost/lexical_cast.hpp> #include <boost/optional.hpp> And through other includes Boost.Units. I am not building a library nor is any of the statechart code in a library, though the build process does say it creates a .lib with the same name as the .exe I ask for but that also happens in debug. The whole thing is in a header that is included by the .cpp file that generates the .obj that causes the linker error. Again, debug builds work perfectly well with the same flags that cause the problem in release. Boost version is 1.42 Would like to know what's going on, how to correctly fix it, etc... -- http://crazyeddiecpp.blogspot.com/

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boost error serialization
by Jack Bryan 15 Aug '10

15 Aug '10

Dear All: I am designing parallel code for MPI with linux. I am using boost::serialization::access to make the data strucutre to be transferred from one process to another process, just like transferring int data type. I got the errors as follows:-------------------------------------------------------------------- /lustre/boost_2010_6_8/boost_1_43_0/boost/config/stdlib/libstdcpp3.hpp:40:1: warning: "BOOST_HAS_THREADS" redefined<command line>:1:1: warning: this is the location of the previous definition/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp: In static member function âstatic void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = population]â:/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:74: instantiated from âvoid boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = population]â/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:133: instantiated from âvoid boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = population]â/lustre/boost_2010_6_8/boost_1_43_0/boost/archive/detail/iserializer.hpp:182: instantiated from âvoid boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::mpi::packed_iarchive, T = population]âmyNetplanScheduler.cpp:445: instantiated from here/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp:118: error: âstruct populationâ has no member named âserializeâ/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp: In static member function âstatic void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_oarchive, T = population]â:/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:74: instantiated from âvoid boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_oarchive, T = population]â/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:133: instantiated from âvoid boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_oarchive, T = population]â/lustre/boost_2010_6_8/boost_1_43_0/boost/archive/detail/oserializer.hpp:148: instantiated from âvoid boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::mpi::packed_oarchive, T = population]âmyNetplanScheduler.cpp:445: instantiated from here/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp:118: error: âstruct populationâ has no member named âserializeâmake: *** [myNetplanScheduler.o] Error 1 ------------------------------------------------------------------------- If I add the following to the class population=-------------------------------------------------typedef struct { individual *ind;protected: // provide serialization of this class, for MPI send/recv friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & ind; };} population;------------------------------------------------ I got more errors: ----------------------------------------------- /lustre/boost_2010_6_8/boost_1_43_0/boost/config/stdlib/libstdcpp3.hpp:40:1: warning: "BOOST_HAS_THREADS" redefined<command line>:1:1: warning: this is the location of the previous definition/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp: In static member function âstatic void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = int*]â:/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:74: instantiated from âvoid boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = int*]â/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:133: instantiated from âvoid boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = int*]â/lustre/boost_2010_6_8/boost_1_43_0/boost/archive/detail/iserializer.hpp:182: instantiated from âvoid boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::mpi::packed_iarchive, T = int*]âmyNetplanScheduler.cpp:448: instantiated from here/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp:118: error: request for member âserializeâ in âtâ, which is of non-class type âint*â/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp: In static member function âstatic void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = double]â:/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:74: instantiated from âvoid boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = double]â/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/serialization.hpp:133: instantiated from âvoid boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = double]â/lustre/boost_2010_6_8/boost_1_43_0/boost/archive/detail/iserializer.hpp:182: instantiated from âvoid boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::mpi::packed_iarchive, T = double]âmyNetplanScheduler.cpp:448: instantiated from here/lustre/boost_2010_6_8/boost_1_43_0/boost/serialization/access.hpp:118: error: request for member âserializeâ in âtâ, which is of non-class type âdoubleâ ..................--------------------------------------------- Any help is appreciated. Jack Aug. 14 2010

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[smart_ptr]intrusive_ptr suggestion
by gast128 15 Aug '10

15 Aug '10

Hello all, probably not a good time to post during the stress of 1.44 release. We use boost a lot and also the intrusive_ptr to wrap ref counted objects. However the intuitive behavior gives memory leaks. For example use a ref counted object KFoo: intrusive_ptr<IFoo> ptr(new KFoo); // mleak, KFoo is extra ref counted ptr.reset(new KFoo) //mleak ptr = intrusive_ptr<IFoo>(new KFoo, false); //ok, but Spartan way of writing Above examples are all in contrast with the syntax of shared_ptr's, in which one could write it in above way without leaking. Although the constructor of intrusive_ptr has an extra argument, its default is set on true. Wouldn't it be a nice suggestion to create a function like make_intrusive, so that one could write: ptr = make_intrusive<KFoo>(); It seems so basic that there must be a hidden caveat somewhere...

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[tuple][mpl][fusion] How to "prune" or "collapse" a tuple?
by AJG 14 Aug '10

14 Aug '10

Hi all, > [added this line to make gmane happy.] I'm looking for a way to remove "empty" values from a tuple. In other words, say I have a tuple T: tuple<E, int, E, double, E, char, E> T; // where E can be either null_type, or mpl::void_, etc. I'd like for it to collapse into: tuple<int, double, char> T2; Now, the reason I say "values" is because I found a way to do just that, but only for the types, which you'll find below. However, I can't figure out how to then *construct* the collapsed tuple given the original tuple (and its values.) Specifically, it's the `???' below that I'm missing. Thanks! // Collapse code: template <typename Sequence> struct tuple_from_sequence : mpl::reverse_fold < Sequence , tuples::null_type , tuples::cons<mpl::_2, mpl::_1> > {}; template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9> struct collapse <tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> > { typedef tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> original; typedef mpl::list<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> sequence; typedef typename mpl::remove<sequence, tuples::null_type>::type removed; typedef typename tuple_from_sequence<removed>::type type; static type construct(original const& t) { // return ???; } };

3 3

Problem compile error
by Luigi Seregni 14 Aug '10

14 Aug '10

Hello, I'm currently developing a windows ce application and I need to use some regular expression. My colleagues suggest me to use boost regex library, but I've experienced some troubles during installation procedures. I'm currently working on Visual Studio 9.0, so I've download the libraries' installer files from this site BoostPro computing. I've followed all the instructions stated in this document: http://www.boost.org/doc/libs/1_43_0/more/getting_started/windows.html#id33, but when I try to compile the example at point 6 (link your program to a boost library) I've obtained this error from compiler: 1>C:\Program Files\boost\boost_1_42\boost/regex/v4/regex_workaround.hpp(46) : fatal error C1083: Cannot open include file: 'locale': No such file or directory I've tried to find a solution but I still haven't found a solution! Can you please help me? Best regards, -- Luigi Seregni

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