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[Fusion] General comments
by Sohail Somani 22 Jan '07

22 Jan '07

Hi, FWIW. I think Fusion is a really good library. Having the results of algorithms be lazily evaluated was genius. Now I need to just find more excuses to use it :) One minor doc suggestion: A full TOC not unlike the MPL TOC would be very helpful for looking up stuff. One has to click through maybe 3 levels before finding out they went to the wrong place (Ok, doesn't happen that often anymore.. but still) Is it possible to get quickbook(?) to do that? Thanks, Sohail

2 1

[fusion] accumulate documentation
by Chris Weed 22 Jan '07

22 Jan '07

Hi, I've tried some code similar to the example here: <http://spirit.sourceforge.net/dl_more/fusion_v2/libs/fusion/doc/html/fusion…> but to get it to compile I have to make the inner function class 'result' instead of 'apply'. Chris

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Does boost::thread_group::create_thread have memory leak?
by pete＠mu.org 22 Jan '07

22 Jan '07

I've been trying to track down memory leak being reported by valgrind. There are others out there who appear to have the same problem, but I can't find any reference to it in the boost list archives. I know valgrind can be inaccurate, but it seems pretty accurate every where else in my program. I've narrowed it down to something like this: ----------------- #include <boost/bind.hpp> #include <boost/thread.hpp> #include <iostream> void fn(){ return; } int main() { boost::thread_group thrd; thrd.create_thread(boost::bind(&fn)); thrd.join_all(); return 0; } ----------------- Valgrind is showing this: ... by 0x4053D76: boost::thread_group::create_thread(boost::function0<void, std::allocator<boost::function_base> > const&) (in /usr/lib/libboost_thread-mt.so.1.33.1) LEAK SUMMARY: ==22004== definitely lost: 0 bytes in 0 blocks. ==22004== possibly lost: 144 bytes in 1 blocks. ==22004== still reachable: 0 bytes in 0 blocks. ==22004== suppressed: 0 bytes in 0 blocks. Any clues? Thoughts? Thanks, Pete

5 15

Boost.Filesystem in C++/CLI?
by George Faraj 22 Jan '07

22 Jan '07

Has anyone tried to use Boost.Filesystem with C++/CLI? I'm trying to get some code that worked correctly in my native application to work on my C++/CLI program. The code is in a header file in a native C++ static library. inline void execute_files(std::string const& dir, std::string const& match, bool recursive = true, lua_State* interpreter = 0) { namespace bfs = boost::filesystem; bfs::path dirpath(dir); // (1) if (!bfs::exists(dirpath)) return; if (!interpreter) interpreter = lua_interpreter(); bfs::directory_iterator end_itr; for (bfs::directory_iterator itr(dirpath); itr != end_itr; ++itr) { if (!bfs::is_directory(*itr)) { if (itr->leaf().find(match) != std::string::npos) execute_file(itr->string()); } else if (recursive) { execute_files(itr->string(), match, recursive, interpreter); } } } The problem I'm having happens in the constructor of bfs::path (namely line (1)) at the first recursive call. An exception is thrown which I can't seem to get a helpful message from. It seems the string returned from itr->string() is invalid. Has anyone tried to use Boost.Filesystem in C++/CLI before? Any ideas on what could be causing this problem? Thanks, George Faraj

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[Boost.Serialization] compilation error with xlc compiler
by DAN LEIBOVICH 21 Jan '07

21 Jan '07

Hi, I am trying to work with the serialization lib (1.33.1) on aix 5.3 with xlc compiler. I tried to compile the demp.cpp and got the error below. Is there any workaround ? Thanks in advance, Dan "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 333.13: 1540-1109 (S) The use of undefined class "boost::STATIC_ASSERTION_FAILURE<0>" is not valid. "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 331.50: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::save_pointer_type<boost::archive::text_oarchive,bus_stop *>::abstract<bus_stop>::register_type(boost::archive::text_oarchive &)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 360.16: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::save_pointer_type<boost::archive::text_oarchive,bus_stop *>::register_type<bus_stop>(boost::archive::text_oarchive &, bus_stop &)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 460.55: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::save_pointer_type<boost::archive::text_oarchive,bus_stop *>::invoke(boost::archive::text_oarchive &, bus_stop * const)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 536.5: 1540-0700 (I) The previous message was produced while processing "boost::archive::save<boost::archive::text_oarchive,bus_stop *>(text_oarchive &, bus_stop * const &)". "../boost/boost_1_33_1/boost/archive/basic_text_oarchive.hpp", line 78.9: 1540-0700 (I) The previous message was produced while processing "boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<bus_stop * const>(bus_stop * const &, int)". "../boost/boost_1_33_1/boost/archive/detail/interface_oarchive.hpp", line 77.15: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<< <bus_stop * const>(bus_stop * const &)". "../boost/boost_1_33_1/boost/serialization/nvp.hpp", line 72.10: 1540-0700 (I) The previous message was produced while processing "boost::serialization::nvp<bus_stop * const>::save<boost::archive::text_oarchive>(text_oarchive &, const unsigned int) const". "../boost/boost_1_33_1/boost/serialization/access.hpp", line 87.17: 1540-0700 (I) The previous message was produced while processing "boost::serialization::access::member_save<boost::archive::text_oarchive,const boost::serialization::nvp<bus_stop * const> >(text_oarchive &, const nvp<bus_stop * const> &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/split_member.hpp", line 43.13: 1540-0700 (I) The previous message was produced while processing "boost::serialization::detail::member_saver<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >::invoke(boost::archive::text_oarchive &, const boost::serialization::nvp<bus_stop * const> &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/split_member.hpp", line 61.13: 1540-0700 (I) The previous message was produced while processing "boost::serialization::split_member<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >(text_oarchive &, nvp<bus_stop * const> &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/nvp.hpp", line 87.5: 1540-0700 (I) The previous message was produced while processing "boost::serialization::nvp<bus_stop * const>::serialize<boost::archive::text_oarchive>(text_oarchive &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/access.hpp", line 104.17: 1540-0700 (I) The previous message was produced while processing "boost::serialization::access::serialize<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >(text_oarchive &, nvp<bus_stop * const> &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/serialization.hpp", line 81.5: 1540-0700 (I) The previous message was produced while processing "boost::serialization::serialize<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >(text_oarchive &, nvp<bus_stop * const> &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/serialization.hpp", line 140.9: 1540-0700 (I) The previous message was produced while processing "boost::serialization::serialize_adl<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >(text_oarchive &, nvp<bus_stop * const> &, const unsigned int)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 253.13: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >::save_only::invoke(boost::archive::text_oarchive &, const boost::serialization::nvp<bus_stop * const> &)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 322.9: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >::invoke(boost::archive::text_oarchive &, const boost::serialization::nvp<bus_stop * const> &)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 536.5: 1540-0700 (I) The previous message was produced while processing "boost::archive::save<boost::archive::text_oarchive,boost::serialization::nvp<bus_stop * const> >(text_oarchive &, const nvp<bus_stop * const> &)". "../boost/boost_1_33_1/boost/archive/basic_text_oarchive.hpp", line 78.9: 1540-0700 (I) The previous message was produced while processing "boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<const boost::serialization::nvp<bus_stop * const> >(const nvp<bus_stop * const> &, int)". "../boost/boost_1_33_1/boost/archive/detail/interface_oarchive.hpp", line 77.15: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<< <const boost::serialization::nvp<bus_stop * const> >(const nvp<bus_stop * const> &)". "../boost/boost_1_33_1/boost/serialization/collections_save_imp.hpp", line 43.12: 1540-0700 (I) The previous message was produced while processing "boost::serialization::stl::save_collection<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >(text_oarchive &, const list<bus_stop *,std::allocator<bus_stop *> > &)". "../boost/boost_1_33_1/boost/serialization/list.hpp", line 44.5: 1540-0700 (I) The previous message was produced while processing "boost::serialization::save<boost::archive::text_oarchive,bus_stop *,std::allocator<bus_stop *> >(text_oarchive &, const list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/split_free.hpp", line 37.17: 1540-0700 (I) The previous message was produced while processing "boost::serialization::free_saver<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >::invoke(boost::archive::text_oarchive &, const std::list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/split_free.hpp", line 74.5: 1540-0700 (I) The previous message was produced while processing "boost::serialization::split_free<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >(text_oarchive &, list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/list.hpp", line 75.5: 1540-0700 (I) The previous message was produced while processing "boost::serialization::serialize<boost::archive::text_oarchive,bus_stop *,std::allocator<bus_stop *> >(text_oarchive &, list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/serialization.hpp", line 125.13: 1540-0700 (I) The previous message was produced while processing "boost::serialization::serialize_adl<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >(text_oarchive &, list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 148.5: 1540-0700 (I) The previous message was produced while processing "boost::archive::detail::oserializer<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >::save_object_data(basic_oarchive &, const void *) const". "../boost/boost_1_33_1/boost/archive/detail/oserializer.hpp", line 99.7: 1540-0700 (I) The previous message was produced while processing "class boost::archive::detail::oserializer<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >". "../boost/boost_1_33_1/boost/serialization/access.hpp", line 109.10: 1540-0217 (S) "serialize" is not a member of "class list<bus_stop *,std::allocator<bus_stop *> >". "../boost/boost_1_33_1/boost/serialization/access.hpp", line 104.17: 1540-0700 (I) The previous message was produced while processing "boost::serialization::access::serialize<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >(text_oarchive &, list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". "../boost/boost_1_33_1/boost/serialization/serialization.hpp", line 81.5: 1540-0700 (I) The previous message was produced while processing "boost::serialization::serialize<boost::archive::text_oarchive,std::list<bus_stop *,std::allocator<bus_stop *> > >(text_oarchive &, list<bus_stop *,std::allocator<bus_stop *> > &, const unsigned int)". --------------------------------- Cheap Talk? Check out Yahoo! Messenger's low PC-to-Phone call rates.

2 3

Receiving a segfault from the variables_map destructor
by Stephen Torri 21 Jan '07

21 Jan '07

In the user interface program I created for a personal library I used the boost program options to provide two command line options to the user. The first is to report a help menu and the second is input used with the library's API. What I am getting is that there is a segfault in destructor for the variable map. Here is the backtrace: #0 0xb7469099 in __gnu_cxx::__exchange_and_add () from /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/libstdc++.so.6 #1 0xb744e039 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string () from /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/libstdc++.so.6 #2 0x0804d7c2 in ~pair (this=0x8054dc8) at /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/include/g++-v4/bits/stl_pair.h:69 #3 0x0804d801 in __gnu_cxx::new_allocator<std::pair<std::string const, boost::program_options::variable_value> >::destroy (this=0xbfa75d93, __p=0x8054dc8) at /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/include/g++-v4/ext/new_allocator.h:109 #4 0x0804e1ad in std::_Rb_tree<std::string, std::pair<std::string const, boost::program_options::variable_value>, std::_Select1st<std::pair<std::string const, boost::program_options::variable_value> >, std::less<std::string>, std::allocator<std::pair<std::string const, boost::program_options::variable_value> > >::destroy_node (this=0xbfa75e98, __p=0x8054db8) at /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/include/g++-v4/bits/stl_tree.h:391 #5 0x0804e232 in std::_Rb_tree<std::string, std::pair<std::string const, boost::program_options::variable_value>, std::_Select1st<std::pair<std::string const, boost::program_options::variable_value> >, std::less<std::string>, std::allocator<std::pair<std::string const, boost::program_options::variable_value> > >::_M_erase (this=0xbfa75e98, __x=0x8054db8) at /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/include/g++-v4/bits/stl_tree.h:1266 #6 0x0804e261 in ~_Rb_tree (this=0xbfa75e98) at /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/include/g++-v4/bits/stl_tree.h:578 #7 0x0804e2b1 in ~map (this=0xbfa75e98) at /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/include/g++-v4/bits/stl_map.h:93 #8 0x0804e31a in ~variables_map (this=0xbfa75e90) at /usr/include/boost/program_options/variables_map.hpp:110 #9 0x0804bec6 in main (ac=2, av=0xbfa75ff4) at pe_reverse.cpp:48 My system information is: gcc-4.1.1-r3 (Gentoo x86) boost-1.33.1-r1 (compiled with debug flag on and no symbols stripped) My user interface program is below. Now you will notice that I am not using the value retrieve from the "file" command line option. What I noticed was that regardless what value "file" contained it was the presence of the --file command line option which triggered the segmentation fault. So I just hardwired my program so that I could check to see if I could track down the segfault. #include <Reverse.h> #include <iostream> #include <Parsing_Exception.hpp> #include <boost/program_options.hpp> int main ( int ac, char** av ) { // Declare the supported options. boost::program_options::options_description desc("Allowed options"); desc.add_options() ("help", "produce help message") ("file", boost::program_options::value<std::string>(), "file to reverse"); boost::program_options::variables_map vm; boost::program_options::store(boost::program_options::parse_command_line(ac, av, desc), vm); boost::program_options::notify(vm); if (vm.count("help")) { std::cout << desc << std::endl; return 1; } if (vm.count("file")) { std::cout << "File to analyze was set to " << vm["file"].as<std::string>() << "." << std::endl; } /* else { std::cout << "File to analyze was not set." << std::endl; return 0; } */ try { libreverse::api::Reverse r_obj; r_obj.execute ( "kernel32.dll", //vm["file"].as<std::string>(), libreverse::api::Input_Types::BINARY, libreverse::api::Output_Types::CPLUSPLUS ); } catch ( errors::Parsing_Exception& pe ) { std::cerr << "Exception: " << pe.name() << std::endl; std::cerr << pe.what() << std::endl; } return 0; } I cannot see what is wrong. Now GCC had a minor revision update lately from 4.1.1-r2. Perhaps what I am running into is a non-boost library which is called by the program options and giving back a bad value. Stephen

1 0

[spirit][phoenix] calling stack::pop
by Jeffrey Holle 21 Jan '07

21 Jan '07

I'm writing a parser using spirit 1.84. I'd like use phoenix to call a method of an attribute in my definition class. Within my definition class I have: typedef stack<int> Parents; Parents parents_; I've attempted to call the pop method of this container using: [phoenix::bind(&definition::Parents::pop)] I get an error saying that an undefined reference to pop was made. If I change the syntax to: [phoenix::bind(&definition::Parents::pop)()] The error messages are much worst. Is there a way to do such a thing using phoenix?

1 0

Directory size (via boost::filesystem) problem
by Daniel Wyatt 21 Jan '07

21 Jan '07

Okay so i just wrote this quick program to test boost::filesystem's features out. It's supposed to find the size of a directory (the sum of the size of the files in it) and optionally recurse all subdirectories: #include <cstdio> #include <cstdlib> #include <iostream> #include <sstream> #include <boost/filesystem/operations.hpp> using namespace std; using namespace boost::filesystem; void Usage(char *Path) { printf("Usage: %s <Directory> [-r]\n", Path); exit(EXIT_FAILURE); } unsigned long DirSize(const string Directory, bool Recurse = false) { long Size = 0; directory_iterator itDir; directory_iterator itEnd; path Path; Path = Directory; itDir = directory_iterator(Path); for (; itDir != itEnd; itDir++) { if (is_directory(*itDir)) { if (Recurse) Size += DirSize(itDir->string(), true); continue; } Size += file_size(*itDir); } return Size; } string UnitString(unsigned long Bytes) { const char *Units[] = {"bytes", "KiB", "MiB", "GiB", "TiB", "PiB"}; const unsigned int UnitsMax = 6; double Size = (double)Bytes; unsigned int i = 0; stringstream ss; for (i = 0; i < UnitsMax && Size >= 1024.0; i++) Size /= 1024.0; ss.precision(2); ss << fixed << Size; ss << " " << Units[i]; return ss.str(); } int main(int argc, char *argv[]) { bool Recurse = false; if (argc != 2 && argc != 3) Usage(argv[0]); if (argc == 3) Recurse = true; if (argc == 3 && stricmp(argv[2], "-r") != 0) Usage(argv[0]); if (!exists(argv[1])) { printf("Directory '%s' does not exist\n\n", argv[1]); Usage(argv[0]); } if (!is_directory(argv[1])) { printf("'%s' is not a directory\n\n", argv[1]); Usage(argv[0]); } printf("Size of directory '%s': %s\n", argv[1], UnitString(DirSize(argv[1], Recurse)).c_str()); return EXIT_SUCCESS; } Its not too pretty but ignore that please. It works for the most part. It gives perfect results for nearly all directories. One exception i've noticed on my system is "C:\Program Files". It gives me "419.15 MiB" but it should be giving me something more like "8.40 GiB". I figure an unsigned long is large enough, isn't it? Do i need to use an unsigned long long or is there something else wrong here??? Thanks, Daniel Wyatt

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Re: [Boost-users] BoostCon 2007 Program Committee progress report
by Moshe Matitya 21 Jan '07

21 Jan '07

Moshe Matitya wrote: > > Beman Dawes wrote: > > > > The conference dates (May 14-16) are firm, and other > arrangements are > > moving forward. See http://www.boost.org/more/BoostCon07.html > > That page says that the conference dates are May 14-18. Can we nail down the conference dates? Beman's message from last week says that the dates are May 14-16, but the web site continues to say that they're May 14-18. It this a three-day or a five-day conference? Moshe

2 1

[Fusion] fusion::traits::is_sequence <-> mpl::is_sequence?
by Sohail Somani 21 Jan '07

21 Jan '07

Hi, If I am trying to make a fusion sequence mpl compatible, do I need to specialize mpl::is_sequence as well? I had expected that the following should be true: BOOST_MPL_ASSERT(( fusion::traits::is_sequence<myseq> )); BOOST_MPL_ASSERT(( mpl::is_sequence<myseq> )); But the compilation fails on the second line. I've also defined begin using the fusion extension mechanism for this sequence. Thanks! Sohail

5 18

[fusion][mpl] Get type from fusion sequence using mpl::at_c
by Chris Weed 21 Jan '07

21 Jan '07

Hi, I am trying to get the type of the first element in a fusion vector using mpl::at_c. This seems simple enough. // Here is the code #include <boost/fusion/sequence/container/vector.hpp> #include <boost/mpl/at.hpp> int main() { typedef boost::fusion::vector<int,int> VectorType; typedef boost::mpl::at_c<VectorType,0>::type value0; return 0; } This won't compile on vc-8.0, and I get the following error message: ...patience... ...found 467 targets... ...updating 2 targets... msvc.compile.c++ bin\msvc-8.0\debug\example2.obj example2.cpp using native typeof boost\boost/mpl/begin_end.hpp(35) : error C2903: 'apply' : symbol is neither a class template nor a function template boost\boost/mpl/aux_/at_impl.hpp(33) : see reference to class template instantiation 'boost::mpl::begin<Sequence>' being compiled with [ Sequence=VectorType ] boost\boost/mpl/at.hpp(45) : see reference to class template instantiation 'boost::mpl::at_impl<Tag>::apply<Sequence,N>' being compiled with [ Tag=boost::fusion::fusion_sequence_tag, Sequence=VectorType, N=boost::mpl::long_<0> ] examples\example2.cpp(11) : see reference to class template instantiation 'boost::mpl::at_c<Sequence,N>' being compiled with [ Sequence=VectorType, N=0 ] boost\boost/mpl/begin_end.hpp(35) : error C2027: use of undefined type 'boost::mpl::begin_impl<boost::fusion::fusion_sequence_tag>' boost\boost/mpl/begin_end.hpp(35) : error C2059: syntax error : '<' boost\boost/mpl/begin_end.hpp(35) : error C2039: 'type' : is not a member of '`global namespace'' boost\boost/mpl/begin_end.hpp(35) : error C2238: unexpected token(s) preceding ';' boost\boost/mpl/aux_/at_impl.hpp(33) : error C2039: 'type' : is not a member of 'boost::mpl::begin<Sequence>' with [ Sequence=VectorType ] boost\boost/mpl/aux_/at_impl.hpp(34) : error C2146: syntax error : missing ',' before identifier 'type' boost\boost/mpl/aux_/at_impl.hpp(34) : error C2065: 'type' : undeclared identifier boost\boost/mpl/aux_/at_impl.hpp(35) : error C2955: 'boost::mpl::advance' : use of class template requires template argument list boost\boost/mpl/advance.hpp(60) : see declaration of 'boost::mpl::advance' boost\boost/mpl/aux_/at_impl.hpp(35) : error C2039: 'type' : is not a member of 'boost::mpl::advance' boost\boost/mpl/advance.hpp(60) : see declaration of 'boost::mpl::advance' boost\boost/mpl/aux_/at_impl.hpp(35) : error C2146: syntax error : missing ';' before identifier 'iter_' boost\boost/mpl/aux_/at_impl.hpp(35) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost\boost/mpl/aux_/at_impl.hpp(35) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int boost\boost/mpl/aux_/at_impl.hpp(37) : error C2065: 'iter_' : undeclared identifier boost\boost/mpl/aux_/at_impl.hpp(37) : error C2955: 'boost::mpl::deref' : use of class template requires template argument list boost\boost/mpl/deref.hpp(35) : see declaration of 'boost::mpl::deref' boost\boost/mpl/aux_/at_impl.hpp(37) : error C2371: 'boost::mpl::at_impl<Tag>::apply<Sequence,N>::type' : redefinition; different basic types with [ Tag=boost::fusion::fusion_sequence_tag, Sequence=VectorType, N=boost::mpl::long_<0> ] boost\boost/mpl/aux_/at_impl.hpp(35) : see declaration of 'boost::mpl::at_impl<Tag>::apply<Sequence,N>::type' with [ Tag=boost::fusion::fusion_sequence_tag, Sequence=VectorType, N=boost::mpl::long_<0> ] call "C:\Program Files\Microsoft Visual Studio 8\VC\vcvarsall.bat" x86 >nul cl /Zm800 -nologo -TP /Z7 /Od /Ob0 /W3 /GR /MDd /Zc:forScope /Zc:wchar_t /wd4675 /EHs @"bin\msvc-8.0\debug\example2.obj.rsp" -c -Fo"bin\msvc-8.0\debug\example2.obj" ...failed msvc.compile.c++ bin\msvc-8.0\debug\example2.obj... ...skipped <pbin\msvc-8.0\debug>example2.exe for lack of <pbin\msvc-8.0\debug>example2.obj... ...failed updating 1 target... ...skipped 1 target...

3 6

Newbie question conerning interprocess stuff
by Wolfgang Hottgenroth 20 Jan '07

20 Jan '07

Hi, I'm a complete newbie with boost and have a question concerning the interprocess stuff. I took the piece of code to share a vector in shared memory between two processes from the quick-start guide as a start point and it compiled and ran immediately with success for me. Then I tried to replace the vector by a map: #include <boost/interprocess/managed_shared_memory.hpp> #include <boost/interprocess/containers/map.hpp> #include <boost/interprocess/allocators/allocator.hpp> using namespace std; int main () { boost::interprocess::shared_memory_object::remove("MySharedMemory"); boost::interprocess::managed_shared_memory segment(boost::interprocess::create_only, "MySharedMemory" ,65536); //segment size in bytes typedef pair<const int, int> MyPair; typedef boost::interprocess::allocator<MyPair, boost::interprocess::managed_shared_memory::segment_manager> ShmemAllocator; typedef boost::interprocess::map<int, int, less<int>, ShmemAllocator> MyMap; const ShmemAllocator alloc_inst (segment.get_segment_manager()); MyMap *mymap = segment.construct<MyMap>("MyMap")(alloc_inst); // mymap->insert(make_pair(1,10)); // mymap->insert(make_pair(2,20)); // mymap->insert(make_pair(3,30)); // mymap->insert(make_pair(4,40)); // mymap->insert(make_pair(5,50)); return 0; } and I wasn't able to compile it any more. (I've put the error message and the sources on the web, find it here: http://www.hottis.de/boost/) I think it is the segment.construct line, although I don't find a direct hint in the error message from the compiler, but if I comment out this line, the compiler is happy. Has any one any hint for me? Thank you very much, Wolfgang

2 1

[statechart] - delay of handlinmg a specific event?
by Oliver.Kowalke＠qimonda.com 20 Jan '07

20 Jan '07

Hello, Is it possible to delay the handling of an event? If I've three states X, Y and Z; initial state is X. State Y is entered if X receives event y1. State Z is entered if X receives event z1. X is entered if Y receives event y2. Y is entered if Z receives event z2. If Y is entered then it executes a function which will generate event y2 during ist processing (function will be executed in another thread - thread passes event y2 to state machine). It is possible that event z1 is passed to the state machine before event y2. How can I delay processing of event z1 until y2 event handling has taken place? Regards, Oliver

2 1

Easy linking question
by Mark Wyszomierski 19 Jan '07

19 Jan '07

Hi, I compiled for visual studio 2005 (vc8). In my boost lib folder I have a serialization library named: libboost_serialization-vc80-mt-gd-1_33_1.lib everything was working fine until I changed my code generation runtime library from: Multi-threaded Debug DLL (/MDd) to: Multi-threaded Debug (/MTd) Now when I compile I get a linking error saying my app cannot find the lib called: libboost_serialization-vc80-mt-sgd-1_33_1.lib (there is an 's' before the 'gd' which is the difference). I don't have this lib anywhere in my boost folder. What happened! Thanks, Mark

2 1

boost::apply_visitor(const& visitor, ...) - why const?
by cdr＠encapsule.com 19 Jan '07

19 Jan '07

Hello, Why does boost::apply_visitor take a const reference to the visitor object? This forces me to write a boost::static_visitor-derived visitor that looks like this: class my_visitor_t : public boost::static_visitor<> { template <typename T> void operator()(T const& t) const { // do something ... } }; ... when what I would really like to do is something like this: class my_visitor_t : public boost::static_visitor<> { my_visitor(my_data & _data) : data(_data) {} void operator()(int const& i) // NOT const { // data.blah.blah = // blah } template <typename T> void operator()(T const& t) // NOT const { // data.foo() } my_data & data }; So I might have several different instances of a given a my_variant_t: my_variant_t v1; my_variant_t v2; my_variant_t v3; my_data_t my_data; my_visitor_t my_visitor(my_data); boost::apply_visitor(my_visitor, v1); boost::apply_visitor(my_visitor, v2); // and so on... ... BUT, the fact that I must make the visitor operator() const makes this impossible and is inconsistent with the way that I'm used to leveraging visitors in the BGL. Would someone be kind enough to comment on the rationale behind this? What am I missing here? - Thanks Chris

4 5

crash on test_no_rtti
by Miguel Silvestre 19 Jan '07

19 Jan '07

Hi! I'm tryingto compile and test the test_no_rtti for deriving pointers of derived classes. I'm getting a crash in the file dbgheap.c line 266 when the boost tries to do this: return dynamic_cast<T>(u); on file smart_cast.hpp line 76. I'm using VC-80 compiler. In the attach I send the file (a little bit modified, since I'm looking for this to compile :S). Any sugestion please???? -- Miguel Silvestre

2 5

Re: [Boost-users] [date_time] timezone rules for different years
by Stephen Turner 19 Jan '07

19 Jan '07

On 2007-01-10 at 15:12:18 GMT, Jeff Garland wrote: > > Personally, I don't have a > use for this or time to implement it myself, but if you are motivated I'm > willing to help you through the process and add into the library when it is > complete. > Jeff, I'm sorry, but I don't think I'm going to have time to work on this. I was keen, but my boss has decided that our users don't care that much about being an hour out six months ago. He's probably right too... -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)

1 0

[Graph] Multithreading slowdown on dual core Pentium D
by Brian Townley 19 Jan '07

19 Jan '07

I am experiencing a problem with multithreading using the boost graph library on a dual core Pentium D platform. If I attempt to calculate average path length of a graph, I get at least a 2x slowdown using multiple threads when using johnson_all_pairs_shortest_path. Calculating betweenness is even worse (~7x) when I use brandes_betweenness_centrality and relative_betweenness_centrality. In my test setup, I have no locks anywhere and no shared memory (the graphs are loaded from a file for each iteration in the test). The graph has been defined similar to the following (I can't get actual code on the list due to restrictions from employer): struct VertexProperties { string name; string group; vector<string> properties; }; struct EdgeProperties { string name; double weight; }; typedef boost::property<...> GraphProperty //a group of enums mapped to doubles and ints typedef boost::adjacency_list<listS, vecS, undirectedS, VertexProperties, EdgeProperties, GraphProperty> BoostGraph; All I have to do in my code to see the slowdown is to use a populated graph with johnson_all_pairs_shortest_path in some iterative loop in both one and multiple threads. A real kicker is that currently I can get around this problem by spawning multiple processes to deal with the data load (so I have an interim solution at least) and that gives me a performance improvement by 2x which I expect with dual core... However, I really want to know why this isn't working in a multi-threaded environment. What could I be doing wrong? Is there some proprocessor #define that makes the boost graph library more thread independent? Is there something wrong with the way that I am declaring the graph? Any help is appreciated! Thanks, Thranil

2 2

[filesystem] code pages support
by Игорь Микушкин 19 Jan '07

19 Jan '07

Hi ! namespace fs = boost :: filesystem; boost :: intmax_t filesize = fs :: file_size (argv [1]); This causes an exception if the name consists of cyrillic symbols. (Windows XP, MinGW). Does boost :: filesystem support these names. --------------------------------- Вы уже с Yahoo!? Испытайте обновленную и улучшенную Yahoo! Почту!

1 0

cancel a pending cregex_iterator matching
by Winson Yung 19 Jan '07

19 Jan '07

Hello, I am using the following pesudo code to do a regex match on big buffer (25K of text), sometimes it takes a little longer to come back with a result. I know this partly because the way my regular expression pattern is structured, but I am just wondering whether boost::regex has a mechanism to cancel the pending matching like this one. regex expr(const char* key, regex_constants::perl | regex_constants::icase); cregex_iterator m1(pBuf, pBuf + scope, expr), m2; if (m1 != m2) { // A match found } else { // No match found }

2 1

Serialization and shared_ptr<const X>
by Anders Wang Kristensen 19 Jan '07

19 Jan '07

Hi, I sometimes use shared_ptr<const X> to share read-only resources between different classes. However serializing shared_ptr<const X> causes problems as shown in the attached code. Saving is no problem, but loading fails to compile with an error about converting from const to non-const. I managed to make it compile and run by splitting serialize into load/save. Save is as before, but in load I deserialize into a shared_ptr<X> (no const) and just assign that to the const version. Is this the preferred way? It seems like a hack since I'm saving as one type and loading as another, albeit closely related, type. Thanks. -- Anders #include <boost/serialization/shared_ptr.hpp> #include <boost/serialization/split_member.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> #include <fstream> class B { public: int x; friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(x); } }; class A { public: boost::shared_ptr<const B> bar; friend class boost::serialization::access; //This doesn't work.. template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(bar); } /* //This works.. template<class Archive> void load(Archive & ar, const unsigned int version) { boost::shared_ptr<B> tmp; ar & BOOST_SERIALIZATION_NVP(tmp); bar = tmp; } template<class Archive> void save(Archive & ar, const unsigned int version) const { ar & BOOST_SERIALIZATION_NVP(bar); } BOOST_SERIALIZATION_SPLIT_MEMBER() */ }; int main(int argc, const char* argv[]) { { boost::shared_ptr<B> b(new B); b->x = 17; A a = { b }; std::ofstream ofs("test.xml"); boost::archive::xml_oarchive oa(ofs); oa << BOOST_SERIALIZATION_NVP(a); } { A a; std::ifstream ifs("test.xml"); boost::archive::xml_iarchive ia(ifs); ia >> BOOST_SERIALIZATION_NVP(a); } }

2 2

Re: [Boost-users] [bjam] Building boost libraries for Win32withalldebugging info
by Nat Goodspeed 18 Jan '07

18 Jan '07

> -----Original Message----- > From: boost-users-bounces(a)lists.boost.org [mailto:boost-users- > bounces(a)lists.boost.org] On Behalf Of Lawrence Spector > Sent: Thursday, January 18, 2007 11:54 AM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] [bjam] Building boost libraries for > Win32withalldebugging info > > We do use the serialization library. What are the caveats to having > 'wchar_t as built-in' off? [Nat] I remembered seeing something about it not working with MSVC 7.1. For some reason I can't find it in the Web archives, but my own Inbox has that message from last November. Turns out it was from YOU, but I didn't realize that when I saw your message earlier today. This is what I was remembering: -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Lawrence Spector Sent: Thursday, November 30, 2006 3:50 PM To: Lawrence Spector; boost-users(a)lists.boost.org Subject: Re: [Boost-users] [Serialization] Linker Errors Using Unicode (Was: error C2027: use of undefined type 'boost::serialization::extended_type_info_null<T>'?) Ok, I was playing with the compiler settings and figured it out. Apparently, in order to use this, you *must* have wchar_t treated as a built-in type setting on in VC7.1. Ah ha. Maybe there's a good spot to document that. Thanks for the assistance, Lawrence

2 1

Re: [Boost-users] Deriving Serialization classes
by Pfligersdorffer, Christian 18 Jan '07

18 Jan '07

Hi Miguel, you can find what you seek in the documentation under Reference, Serializable Concept, Pointers, Pointers to Objects of Derived Classes. Two possibilities: * eiter call ar.register_class<A>() * or use the macro BOOST_CLASS_EXPORT(A) Have fun, Christian Pfligersdorffer Software Engineering EOS GmbH > -----Ursprüngliche Nachricht----- > Von: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org]Im Auftrag von Miguel > Silvestre > Gesendet: Montag, 15. Januar 2007 16:30 > An: boost-users(a)lists.boost.org > Betreff: Re: [Boost-users] Deriving Serialization classes > > > Anyone??? > > In the boost code I found this comment: > > // note:if this exception is thrown, be sure that derived pointer > // is either regsitered or exported. > > How can I register a class???????? > > On 1/15/07, Miguel Silvestre <msilvestre(a)gmail.com> wrote: > > Just make the test without a pointer ant it works just fine. > > > > I've looked at the documentation and it only refers to this > problem on > > derivated classes! But I'm not deriving any class. I'm just > including > > the ponter of a class :( > > > > On 1/15/07, Miguel Silvestre <msilvestre(a)gmail.com> wrote: > > > Ok!!! > > > > > > Now I'm getting unregistered_class exceptions when trying > to seryalize > > > a class that has another class. Like: > > > > > > class C : public Serializer > > > { > > > typedef Serializer Parent; > > > public: > > > std::string text; > > > A* m_owner; > > > int32 dasse; > > > C():m_owner(0) > > > { > > > text = "Ola sua puta rabeta!"; > > > dasse = 69; > > > } > > > > > > void Serialize(IArchive& ar, const unsigned int version) > > > { > > > ar.Serialize(dasse); > > > ar.Serialize(text); > > > //ar.Serialize(m_owner); > > > } > > > }; > > > > > > class A : public Serializer > > > { > > > typedef Serializer Parent; > > > public: > > > > > > void Serialize(IArchive& ar, const unsigned int version) > > > { > > > ar.Serialize(dumbi); > > > ar.Serialize(vectorTest); > > > ar.Serialize(matrix); > > > ar.Serialize(testing); > > > ar.Serialize((void*)test_void, sizeof(Vector3f)); > > > } > > > > > > int dumbi; > > > float dumbf; > > > Vector2f vectorTest; > > > Matrix33 matrix; > > > C* testing; > > > Vector3f* test_void; > > > > > > A():dumbi(12), dumbf(69.69f) > > > { > > > testing = new C(); > > > testing->m_owner = this; > > > matrix.SetIdentity(); > > > test_void = new Vector3f(1,2,3); > > > } > > > > > > A(int dumb1, float dumb2) : dumbi(dumb1), dumbf(dumb2) > > > { > > > testing = new C(); > > > testing->m_owner = this; > > > matrix.SetIdentity(); > > > test_void = new Vector3f(1,2,3); > > > } > > > }; > > > > > > If I comment the line that serializes C object from A > > > (ar.Serialize(testing);) everything works fine. > > > I can serialize Object A. And I can serialiaze the Object > C to. But > > > when I have apoibter to C on object A It throws the > unregistered_class > > > exception? > > > > > > Why? > > > > > > How can I avoid this??? > > > On 1/12/07, Robert Ramey <ramey(a)rrsd.com> wrote: > > > > Use binary_object. > > > > > > > > Robert Ramey > > > > > > > > > > > > > > > > _______________________________________________ > > > > Boost-users mailing list > > > > Boost-users(a)lists.boost.org > > > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > > > > > > > > > > -- > > > Miguel Silvestre > > > > > > > > > -- > > Miguel Silvestre > > > > > -- > Miguel Silvestre > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

3 8

[Boost.Serialization] Memory management for references
by sadrok 18 Jan '07

18 Jan '07

Hi, I'm loading a class that requires a reference passed to the constructor. The implementation requires loading data into a pointer as explained in the docs. How is the memory for the loaded object handled? Does it automatically get freed when the object goes out of scope? Thanks -- sadrok(a)gmail.com Yahoo! IM: sadrok_za Jabber ID: sadrok(a)jabber.obsidian.co.za

2 1

Re: [Boost-users] [bjam] Building boost libraries for Win32 with alldebugging info
by Nat Goodspeed 18 Jan '07

18 Jan '07

________________________________________ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Lawrence Spector Sent: Thursday, January 18, 2007 11:44 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] [bjam] Building boost libraries for Win32 with alldebugging info I had built the boost libraries a while ago, using bjam. It looks like all the boost debug libraries were built with Debug Information Format of "C7 Compatible (/Z7)" instead of "Program Database for Edit and Continue (/ZI)" and I'd like to rebuild the libraries with this option turned on. In addition, we're going to need "Treat wchar_t as a built-in type" turned off. It defaults to on. [Nat] We don't use bjam, so I'll let others address your real question. But do you intend to use the Serialization library? If so, beware of turning off 'wchar_t as built-in'.

2 1

[bjam] Building boost libraries for Win32 with all debugging info
by Lawrence Spector 18 Jan '07

18 Jan '07

I had built the boost libraries a while ago, using bjam. It looks like all the boost debug libraries were built with Debug Information Format of "C7 Compatible (/Z7)" instead of "Program Database for Edit and Continue (/ZI)" and I'd like to rebuild the libraries with this option turned on. In addition, we're going to need "Treat wchar_t as a built-in type" turned off. It defaults to on. Any help that can be given in setting the bjam to build correctly for our situation would be much appreciated. Thanks in advance, Lawrence

1 0

Using regex
by tintin 18 Jan '07

18 Jan '07

I've tried using the regex library in msvc, but keep getting unresolved external errors.. I have; #define BOOST_REGEX_NO_LIB #include <boost/regex.hpp> using namespace boost; Whenever I do a: regex e(".*test.*"); I keep getting a: 1>test.obj : error LNK2019: unresolved external symbol "private: class boost::basic_regex<char,struct boost::regex_traits<char,class boost::w32_regex_traits<char> > > & __thiscall boost::basic_regex<char,struct boost::regex_traits<char,class boost::w32_regex_traits<char> > >::do_assign(char const *,char const *,unsigned int)" (?do_assign@?$basic_regex@DU?$regex_traits@DV?$w32_regex_traits@D@boost@@@boost@@@boost@@AAEAAV12@PBD0I@Z) referenced in function "public: class boost::basic_regex<char,struct boost::regex_traits<char,class boost::w32_regex_traits<char> > > & __thiscall boost::basic_regex<char,struct boost::regex_traits<char,class boost::w32_regex_traits<char> > >::assign(char const *,char const *,unsigned int)" (?assign@?$basic_regex@DU?$regex_traits@DV?$w32_regex_traits@D@boost@@@boost@@@boost@@QAEAAV12@PBD0I@Z) Yeah I know it's long, but that's the msvc error ;) Any ideas why it won't work?

2 1

How can we serialize pointer of type base abstract class pointing to Derived concrete class
by Piyush Kapadia 18 Jan '07

18 Jan '07

We have a situation where there is BaseAbstract class and Derived concrete class. Interface requires that we pass BaseAbstractClassPointer, using which user can provide any of Derived Concrete class pointer and Interface remain generic to them. However serializing BaseAbstractPointer is throwing following error - *A unregistered class* How do we handle this situation ? #include <iostream> #include <fstream> #include <boost/archive/text_iarchive.hpp> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/binary_iarchive.hpp> #include <boost/archive/binary_oarchive.hpp> #include <boost/serialization/vector.hpp> #include <boost/serialization/map.hpp> #include <vector> #include <map> #include <boost/archive/archive_exception.hpp> #include <boost/archive/basic_xml_archive.hpp> class BaseAbstract { public : virtual void setRate(double rate) = 0; virtual double getRate(int) = 0; }; class DerivedConcrete : public BaseAbstract { std::vector<double> rateVec; friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(rateVec); } public: DerivedConcrete(double rate) {rateVec.push_back(rate);} DerivedConcrete(){} virtual ~DerivedConcrete(){} void setRate(double rate){ rateVec.push_back(rate); }; double getRate(int idx){ return rateVec[idx]; }; }; class AnyClass { friend class boost::serialization::access; BaseAbstract* rate; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(rate); } public: AnyClass(BaseAbstract* rateInput){ rate = rateInput; }; AnyClass() {}; setRate(BaseAbstract* rateInput){ rate = rateInput; }; }; int main(int argc, char* argv[]) { try { DerivedConcrete* fr = new DerivedConcrete(12.12); fr->setRate(14.5); AnyClass ac; ac.setRate(fr); std::ofstream ofs("AC.xml"); assert(ofs.good()); boost::archive::xml_oarchive oa(ofs); oa << BOOST_SERIALIZATION_NVP(ac); ofs.close(); } catch (boost::archive::xml_archive_exception ex) { std::cerr << " X " << ex.what() << std::endl; } catch (boost::archive::archive_exception ex) { std::cerr << " A " << ex.what() << std::endl; } catch (std::exception ex) { std::cerr << " E " << ex.what() << std::endl; } catch (...) { std::cerr << "Unknown Exception " << std::endl; } return 0; }

3 4

GNU Cross compiler problem under cygwin
by Norbert Unterberg 18 Jan '07

18 Jan '07

I have a cross compiler problem. We are running a cross compiler toolchain under Cygwin/Windows. This toolchain uses a cuistomized gcc compiler to generate code for a linux target. When trying to build boost using this cross compiler, bjam still detects that it is running on cygwin and windows, and tries to build DLLs instead of linux shared libraries. Is there any chance to configure bjam to run under windows or cygwin but generate code for a different target, either by special command line options or even by compiling a custom version of bjam? I have looked into jam some time ago but had to drop it because it was unable to differentiate between host and target configuration (like running under a windows host but generate code for Linux). Seem I am faling into the same trap again... Any help is appreciated! Norbert Unterberg

1 0

[Boost.dynamic_bitset bug]: operators <<= and >>= interchanged?
by Martin Moene 18 Jan '07

18 Jan '07

boost_1_33_1 Dear all, I suspect that the shift operator of the dynamic_bitset are reversed. Best regards, Martin Moene ___ C:\>dynamic_bitset.exe x :11111 x <<= 1:01111 x >>= 2:11100 /* * dynamic_bitset bug: operator <<= and >>= interchanged. * * cl -GX -ID:/Libraries/boost_1_33_1/ dynamic_bitset.cpp * cl -GX -IC:/Libraries/boost_1_33_1/ dynamic_bitset.cpp * cl -GX -I%BOOST% dynamic_bitset.cpp */ #include <iostream> #include <boost/dynamic_bitset.hpp> std::ostream& operator<<( std::ostream& os, boost::dynamic_bitset<> const& bs ) { for ( boost::dynamic_bitset<>::size_type i = 0; i < bs.size(); ++i ) { os << bs[i]; } return os; } int main( int, char*[] ) { boost::dynamic_bitset<> x(5); // all 0's by default x.set(); std::cout << "x :" << x << std::endl; std::cout << "x <<= 1:" << ( x <<= 1 ) << std::endl; std::cout << "x >>= 2:" << ( x >>= 2 ) << std::endl; return EXIT_FAILURE; }

3 2

[fusion] vector documentation
by Chris Weed 18 Jan '07

18 Jan '07

Hi, This example <http://spirit.sourceforge.net/dl_more/fusion_v2/libs/fusion/doc/html/fusion…> has the following include #include <boost/fusion/sequence/container/vector/vector_forward.hpp> which appears to now be vector/vector_fwd.hpp in CVS. Am I using outdated docs, outdated code, or is it not consistent? Thanks, Chris

2 1

Compiling boost 1.33.1, Visual Studio 2005 SP1, 64 bit Windows, AMD
by Leslie Brody (TT) 18 Jan '07

18 Jan '07

When compiling boost 1.33.1 with Visual Studio 2005 SP1 for 64 bit AMD on windows I get the following error. once.obj : error LNK2019: unresolved external symbol _InterlockedCompareExchange referenced in function "long __cdecl `anonymous namespace'::compare_exchange(long * volatile,long,long)" (?compare_exchange@?A0x74ecc88f@@YAJREAJJJ@Z) >From what I have seen this works in multiple other projects. This also works if I use that header in a new isolated project. I am assuming it is some compiler setting. But I am not sure which. Any thoughts are greatly appreciated Thank You -Leslie

2 1

using serialization
by 041021042＠fudan.edu.cn 18 Jan '07

18 Jan '07

Dear all, I have been experimenting with the boost serialization library. The working environment is Cygwin + gcc3.4.4 + boost_1_33. I creat the following program, the data structure is about electric circuits. The data is saved successfully, but the loadded data is wrong, some pointers in the Wire objects points to invalid address. While when I compile and run it in another machine (Linux + gcc4.1.1 + boost_1_33_1), it works properly. I wonder if it is a compiler compatibility problem or there is something wrong in my program. #ifndef CIRCUIT_H_ #define CIRCUIT_H_ #include <ostream> #include <string> #include <vector> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/vector.hpp> #include <boost/serialization/nvp.hpp> class Pin { std::string parent; int index; friend std::ostream& operator<< (std::ostream& os, const Pin& pin); friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(parent) & BOOST_SERIALIZATION_NVP (index); } public: Pin(std::string p="", int i=0) : parent(p), index(i) {} }; class Wire { Pin* source; Pin* sink; friend std::ostream& operator<< (std::ostream& os, const Wire& wire); friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(source) & BOOST_SERIALIZATION_NVP(sink); } public: Wire(Pin* src=0, Pin* snk=0) : source(src), sink(snk) {} }; class Block { protected: std::string name; std::vector<Pin*> pins; Block() {} virtual std::ostream& print(std::ostream& os) const; friend std::ostream& operator<< (std::ostream& os, const Block& blk); friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version ) { ar & BOOST_SERIALIZATION_NVP(name) & BOOST_SERIALIZATION_NVP (pins); } public: Block(std::string n, int np) : name(n), pins(np) { for (int i=0; i<np; i++) pins[i] = new Pin(n, i); } virtual ~Block() { for (int i=0; i<pins.size(); i++) delete pins [i]; } Pin* get_pin(int i) { return pins[i]; } std::string get_name() { return name; } virtual std::ostream& print_recursive(std::ostream& os) const { return print(os); } }; class Circuit : public Block { protected: std::vector<Block*> children; std::vector<Wire*> wires; std::ostream& print(std::ostream& os) const; friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar.register_type(static_cast<Circuit *>(NULL)); ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Block); ar & BOOST_SERIALIZATION_NVP(children) & BOOST_SERIALIZATION_NVP(wires); } public: Circuit() : Block() {} Circuit(std::string name, int np) : Block(name, np) { } void add_block(Block& b) { children.push_back(&b); } void add_wire(Wire& w) { wires.push_back(&w); } std::ostream& print_recursive(std::ostream& os) const; }; std::ostream& operator<< (std::ostream& os, const Pin& pin); std::ostream& operator<< (std::ostream& os, const Wire& wire); std::ostream& operator<< (std::ostream& os, const Block& blk); #endif /*CIRCUIT_H_*/ // main.cpp #include <iostream> #include <fstream> #include "circuit.h" void save_circuit(const Circuit& c, const char * filename) { std::ofstream ofs(filename); boost::archive::xml_oarchive oa(ofs); oa << BOOST_SERIALIZATION_NVP(c); } void load_circuit(Circuit& c, const char * filename) { std::ifstream ifs(filename); boost::archive::xml_iarchive ia(ifs); ia >> BOOST_SERIALIZATION_NVP(c); } int main() { Circuit pe1("pe1",5); Circuit top("top", 4); top.add_block(pe1); Wire w6(top.get_pin(0), pe1.get_pin(0)); Wire w7(top.get_pin(1), pe1.get_pin(1)); Wire w8(pe1.get_pin(4), top.get_pin(2)); top.add_wire(w6); top.add_wire(w7); top.add_wire(w8); top.print_recursive(std::cout); save_circuit(top, "circuit.xml"); Circuit top2; load_circuit(top2, "circuit.xml"); top2.print_recursive(std::cout); } There is another problem, when I inlined the 'save' and 'load' function, the following error occured, and the data couldn't be saved. terminate called after throwing an instance of 'boost::archive::xml_archive_exception' what(): unrecognized XML syntax Aborted The program is listed here: int main() { // ... ... // prepare data std::ofstream ofs("circuit.xml"); boost::archive::xml_oarchive oa(ofs); oa << BOOST_SERIALIZATION_NVP(top); Circuit top2; std::ifstream ifs("circuit.xml"); boost::archive::xml_iarchive ia(ifs); ia >> BOOST_SERIALIZATION_NVP(top2); top2.print_recursive(std::cout); } The error occured on both machine. Could anyone explain what's the difference between the two programs. Best regards, Roger Zhou

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Fusion/Phoenix/mpl/lamda/... (was Re: [Bind] arity of arbitrary object)
by Gottlob Frege 18 Jan '07

18 Jan '07

On 1/17/07, Joel de Guzman <joel(a)boost-consulting.com> wrote: > > Peter Dimov wrote: > > arity( _bi::bind_t<R,F,L> ) :- max( arity( e ) ) for each e in L > > arity( X ) :- is_placeholder<X>::value > > > > This could be much easier with a bind that uses a fusion tuple as L. :-) > > Phoenix :) > > Regards, > -- > Joel de Guzman > http://www.boost-consulting.com > http://spirit.sf.net Someone (Joel?) want to explain the differences between fusion/phoenix/mpl/etc/whatever-else-seems-overlapping? Thanks. Tony

3 2

MPL-Buch
by Ovanes Markarian 18 Jan '07

18 Jan '07

Hi Dave, I was going to send to a collegue a link to some sample articles of your and Alexey's book, which were available online, but unfortunately they are not available now. I mean sample chapters from the site: http://www.boost-consulting.org/metaprogramming-book.html Is this intention? With Kind Regards, Ovanes Markarian

5 8

Interprocess & STL
by Sunil Chomal 17 Jan '07

17 Jan '07

Dear All, As it was previously possible to use shmem shared memory allocator with STL containers, is it still possible to use the interprocess shared memory allocator along with STL containers? If I try to use a STL container with interprocess shared memory allocator, I get the following error: Error: cannot convert boost::interprocess::offset_ptr<type> to type* Can someone help with this issue? Regards, Sunil Chomal

3 2

Regression tests for MSVC-8.0 on Win64?
by Anders Dalvander 17 Jan '07

17 Jan '07

Anyone doing regression tests for Microsoft Visual C++ 8.0 on 64-bit Windows? // Anders

2 1

[Bind] arity of arbitrary object
by Chris Uzdavinis 17 Jan '07

17 Jan '07

Can anyone tell me how to determine the arity of an arbitrary bind object? I have a generic function that receives a bind object, but so far I've been unable to detect at compile time how many arguments it takes. Am I overlooking something obvious? Thanks a lot. Chris

4 14

adjaceny_list typedef scope
by Alec Resnick 17 Jan '07

17 Jan '07

It would seem that I'm having a bit of trouble nailing down the scope of a typedef of the adjacency_list type in a class I'm writing. For some reason, I keep getting the error "error: 'directed_graph' does not name a type" when trying to compile the following code using XCode 2.4 with the boost library installed via DarwinPorts and the appropriate library and search paths (/opt/local/lib/ and /opt/local/ include/) set. If someone could help me out with this, I would very much appreciate it. Thanks for your time! Gratefully, a. /* * GARN.h * GA_RuleNetwork * * Created by Alec Resnick on 1/8/07. * Copyright 2007 dror. All rights reserved. * */ #ifndef GRAPH_AUTOMATA_RULE_NETWORK_CLASS_HEADER_FILE #define GRAPH_AUTOMATA_RULE_NETWORK_CLASS_HEADER_FILE #include <iostream> #include <vector> #include <string> #include <math.h> #include <boost/graph/adjacency_list.hpp> #include "GARN_helpers.h" #include "GARN_neighborhood.h" using namespace std; using namespace boost; class GARN{ typedef property<edge_name_t, int> edge_property; typedef property<vertex_name_t, GARN_neighborhood> vertex_property; typedef adjacency_list<vecS, vecS, directedS, vertex_property, edge_property> directed_graph; typedef graph_traits<directed_graph>::vertex_descriptor vertex; typedef graph_traits<directed_graph>::edge_descriptor edge; private: vector<int> lookupTable; int neighborhoodSize; int numStates; int ruleNumber; directed_graph ruleNetwork; vector<GARN_neighborhood> neighborhoodSpace; public: // Constructors------------------------------------------------------------ -> GARN(); GARN(int,int,int); // Destructors------------------------------------------------------------- -> ~GARN(); // Accessors--------------------------------------------------------------- -> directed_graph get_ruleNetwork(); // Mutators---------------------------------------------------------------- -> }; // Constructors------------------------------------------------------------ -----> GARN::GARN(){ } GARN::GARN(int _ruleNumber, int _numStates, int _neighborhoodSize){ ruleNumber = _ruleNumber; numStates = _numStates; neighborhoodSize = _neighborhoodSize; int neighborhoodSpaceSize = int(pow(numStates,neighborhoodSize)); lookupTable = intToNary(ruleNumber, numStates, neighborhoodSpaceSize); typedef property_map<directed_graph, vertex_name_t>::type vertex_map; typedef property_map<directed_graph, edge_name_t>::type edge_map; vertex_map vertexState = get(vertex_name, ruleNetwork); edge_map edgeState = get(edge_name, ruleNetwork); vertex parent, child; for(int i = 0 ; i < neighborhoodSpaceSize; ++i){ parent = add_vertex(ruleNetwork); child = add_vertex(ruleNetwork); GARN_neighborhood firstGeneration(intToNary (i,numStates,neighborhoodSize)); GARN_neighborhood secondGeneration(firstGeneration.stepTo (lookupTable.at(i))); vertexState[parent] = firstGeneration; vertexState[child] = secondGeneration; } } // Destructors------------------------------------------------------------- -----> GARN::~GARN(){ } // Accessors--------------------------------------------------------------- -----> directed_graph GARN::get_ruleNetwork(){ return ruleNetwork; } // Mutators---------------------------------------------------------------- -----> #endif

3 2

Re: [Boost-users] [boost.serialization] compiler warnings
by jsanga＠cox.net 17 Jan '07

17 Jan '07

---- Robert Ramey <ramey(a)rrsd.com> wrote: > Double check that you're compiling with the switch that uses an intrinsic > type for wchar_t rather than a short int. > > Note that a lot of the warnings are from boost::io::state_saver... so maybe > there is an issue there. > > Robert Ramey I double checked. I'm treating wchar_t as an intrinsic type. I tried changing that and didn't notice any difference in the number of warnings issued.

1 0

COM and boost::intrusive_ptr
by Philipp Henkel 17 Jan '07

17 Jan '07

Hi all, I would like to discuss some code I'm using to manage COM objects with intrusive_ptr. 1. I need to access the address of the raw pointer (to use QueryInterface). Therefore I implemented operator& for intrusive_ptr. Like in COM this pointer-pointer will only be used for intialization purposes. My implementation relies on the intrusive_ptr's memory layout and returns reinterpret_cast<T**>(addressof(ptr)). I know, this is evil... CComPtr-like usage: boost::intrusive_ptr<IVideo> video; someObject->QueryInterface(IID_IVideo,(void**)&video); Is there a better way? How do you bring intrusive_ptr and QueryInterface together? 2. My functions intrusive_ptr_add_ref and intrusive_ptr_release are specialized to handle IUnknown instances only. This way I avoid any conflicts with implementations of other reference counted objects. Maybe you can make use of them :-) Here's my code: template<typename T> T** operator&(intrusive_ptr<T>& ptr) { ASSERT(0 == *reinterpret_cast<T**>(addressof(ptr))); return reinterpret_cast<T**>(addressof(ptr)); } template<typename T> inline typename enable_if < is_base_of<IUnknown, T> >::type intrusive_ptr_add_ref(T* pObject) { pObject->AddRef(); } template<typename T> inline typename enable_if < is_base_of<IUnknown, T> >::type intrusive_ptr_release(T* pObject) { pObject->Release(); } Best regards, Philipp

6 8

[regex] Does boost::regex support grouping?
by Roman Morokutti 17 Jan '07

17 Jan '07

Hi, I was just wondering if boost::regex supports grouping in either way. Roman

2 3

Re: [Boost-users] BoostCon 2007 Program Committee progress report
by Peter 17 Jan '07

17 Jan '07

Something else that would be good to do if possible is to record the sessions. If this is possible these videos could be uploaded to youtube, google videos, or .... This way those of us who cannot afford or make the time to go could still learn quite a bit. Thanks, Peter > ------------------------------ > > Message: 4 > Date: Mon, 15 Jan 2007 14:31:03 -0000 > From: "Andrew Marlow" <Andrew.Marlow(a)icap.com> > Subject: Re: [Boost-users] BoostCon 2007 Program Committee progress > report > To: <boost-users(a)lists.boost.org> > Message-ID: > <EF291372CE2908408E5D44327293A81203E4E540(a)ukexmb4.uk.icap.com> > Content-Type: text/plain; charset="us-ascii" > > boost-users-bounces(a)lists.boost.org wrote: > > The conference dates (May 14-16) are firm, and other > > arrangements are moving forward. See > > http://www.boost.org/more/BoostCon07.html > > > This sounds like the bees knees. Unfortunately I will not be able to > persaude my current employer to send me and my colleagues to Colorado > for that week. What plans does Boost have for a UK conference please? I > am trying to get my employer to consider using boost for some platform > independence. > > Regards, > > Andrew Marlow >

1 0

[fusion] construct a tuple's elements with arguments
by Yuval Ronen 17 Jan '07

17 Jan '07

If I have a typedef fusion::tuple<X, Y, Z> T; can I somehow create a T instance like T t(1, "hello"); and by that I mean that each of T's elements (of types X, Y and Z) would be constructed using the constructor that accepts an int and a string, assuming there is such a constructor for all T's elements. If there isn't such constructor for all T's elements, then it shouldn't compile, of course. Of course using the exact syntax above is not possible, because it's reserved for something else, but any other syntax would be just as good (perhaps using in_place_factory). Yuval

2 4

BGL edge properties
by marina mentelmacher 17 Jan '07

17 Jan '07

Hi, I didn’t find a way to define BGL adjacency_list without property pointer on edges. I suppose it’s a bug. It’s edge_descriptor is defined as follows: typedef detail::edge_desc_impl<directed_category, vertex_descriptor> edge_descriptor; and template <typename Directed, typename Vertex> class edge_desc_impl : public edge_base<Directed,Vertex> { typedef edge_desc_impl self; typedef edge_base<Directed,Vertex> Base; public: typedef void property_type; inline edge_desc_impl() : m_eproperty(0) {} inline edge_desc_impl(Vertex s, Vertex d, const property_type* eplug) : Base(s,d), m_eproperty(const_cast<property_type*>(eplug)) { } property_type* get_property() { return m_eproperty; } const property_type* get_property() const { return m_eproperty; } // protected: property_type* m_eproperty; }; I think that edge_descriptor should be derived directly from edge_base. Regards, Roman.

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[boost.serialization] compiler warnings
by jsanga＠cox.net 17 Jan '07

17 Jan '07

I have been experimenting with the boost serialization library. It seems to do what I need. I am using Boost_1_33_1 and Microsoft’s VC8 compiler. When I create a simple little program, I’m getting a lot of compiler warnings even at the /w3 level. Could compiler switches or installation configuration be the problem? #include "stdafx.h" #include <iostream> #include <vector> #include <string> #include <sstream> #include <boost/archive/text_woarchive.hpp> #include <boost/serialization/vector.hpp> typedef std::vector<std::wstring> VCT_WSTR; struct Foo { VCT_WSTR vws; private: // Take care of serializing the class friend class boost::serialization::access; template< class Archive > void serialize( Archive &ar, unsigned int ver ); }; BOOST_CLASS_VERSION ( Foo, 1 ) template< class Archive > void Foo::serialize( Archive &ar, unsigned int /* ver */ ) { ar & vws; } // text archive void Test1( const Foo &foo ) { unsigned int flags = boost::archive::no_header | boost::archive::no_codecvt | boost::archive::no_xml_tag_checking; std::wstringstream wos; boost::archive::text_woarchive oa(wos,flags); oa & foo; std::wcout << L"Foo is " << wos.str() << L"\n"; wos.str(L""); // reset the output stream oa & foo; std::wcout << L"Foo is " << wos.str() << L"\n"; } int _tmain(int argc, _TCHAR* argv[]) { argc; argv; // Set up some recognizable values Foo foo; for( size_t i=0; i < 5; ++i ) foo.vws.push_back( L"Big String for vws" ); Test1( foo ); return 0; } Compiler options are: /O2 /I "D:\Boost_1_33_1" /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_SCL_SECURE_NO_DEPRECATE" /D "_UNICODE" /D "UNICODE" /FD /EHsc /MD /Yu"stdafx.h" /Fp"Release\Test.pch" /Fo"Release\\" /Fd"Release\vc80.pdb" /W4 /nologo /c /Wp64 /Zi /TP /errorReport:prompt Sample of Warnings (at /w4) ------ Build started: Project: Test, Configuration: Release Win32 ------ Compiling... Test.cpp D:\Boost_1_33_1\boost/io/ios_state.hpp(52) : warning C4512: 'boost::io::ios_flags_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(32) : see declaration of 'boost::io::ios_flags_saver' D:\Boost_1_33_1\boost/io/ios_state.hpp(75) : warning C4512: 'boost::io::ios_precision_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(55) : see declaration of 'boost::io::ios_precision_saver' D:\Boost_1_33_1\boost/io/ios_state.hpp(98) : warning C4512: 'boost::io::ios_width_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(78) : see declaration of 'boost::io::ios_width_saver' D:\Boost_1_33_1\boost/io/ios_state.hpp(275) : warning C4512: 'boost::io::ios_iword_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(253) : see declaration of 'boost::io::ios_iword_saver' D:\Boost_1_33_1\boost/io/ios_state.hpp(300) : warning C4512: 'boost::io::ios_pword_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(278) : see declaration of 'boost::io::ios_pword_saver' D:\Boost_1_33_1\boost/io/ios_state.hpp(330) : warning C4512: 'boost::io::ios_base_all_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(306) : see declaration of 'boost::io::ios_base_all_saver' D:\Boost_1_33_1\boost/io/ios_state.hpp(406) : warning C4512: 'boost::io::ios_all_word_saver' : assignment operator could not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(382) : see declaration of 'boost::io::ios_all_word_saver' D:\Boost_1_33_1\boost/serialization/void_cast.hpp(127) : warning C4512: 'boost::serialization::void_cast_detail::void_caster' : assignment operator could not be generated D:\Boost_1_33_1\boost/serialization/void_cast.hpp(91) : see declaration of 'boost::serialization::void_cast_detail::void_caster' D:\Boost_1_33_1\boost/io/ios_state.hpp(246) : warning C4512: 'boost::io::basic_ios_locale_saver<Ch>' : assignment operator could not be generated with [ Ch=wchar_t ] D:\Boost_1_33_1\boost/archive/basic_text_oprimitive.hpp(75) : see reference to class template instantiation 'boost::io::basic_ios_locale_saver<Ch>' being compiled with [ Ch=wchar_t ] D:\Boost_1_33_1\boost/archive/text_woarchive.hpp(45) : see reference to class template instantiation 'boost::archive::basic_text_oprimitive<OStream>' being compiled with [ OStream=std::wostream ] D:\Boost_1_33_1\boost/archive/text_woarchive.hpp(99) : see reference to class template instantiation 'boost::archive::text_woarchive_impl<Archive>' being compiled D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(118) : warning C4100: 'flags' : unreferenced formal parameter D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(118) : while compiling class template member function 'bool boost::archive::detail::oserializer<Archive,T>::tracking(const unsigned int) const' with [ Archive=boost::archive::text_woarchive, T=Foo ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(264) : see reference to class template instantiation 'boost::archive::detail::oserializer<Archive,T>' being compiled with [ Archive=boost::archive::text_woarchive, T=Foo ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(263) : while compiling class template member function 'void boost::archive::detail::save_non_pointer_type<Archive,T>::save_standard::invoke(Archive &,const Foo &)' with [ Archive=boost::archive::text_woarchive, T=Foo ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(322) : see reference to class template instantiation 'boost::archive::detail::save_non_pointer_type<Archive,T>::save_standard' being compiled with [ Archive=boost::archive::text_woarchive, T=Foo ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(310) : while compiling class template member function 'void boost::archive::detail::save_non_pointer_type<Archive,T>::invoke(Archive &,const Foo &)' with [ Archive=boost::archive::text_woarchive, T=Foo ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(536) : see reference to class template instantiation 'boost::archive::detail::save_non_pointer_type<Archive,T>' being compiled with [ Archive=boost::archive::text_woarchive, T=Foo ] D:\Boost_1_33_1\boost/archive/basic_text_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::save<Archive,const T>(Archive &,const T &)' being compiled with [ Archive=boost::archive::text_woarchive, T=const Foo ] D:\Boost_1_33_1\boost/archive/detail/interface_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::basic_text_oarchive<Archive>::save_override<T>(T &,int)' being compiled with [ Archive=boost::archive::text_woarchive, T=const Foo ] D:\Boost_1_33_1\boost/archive/detail/interface_oarchive.hpp(86) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator <<<T>(T &)' being compiled with [ Archive=boost::archive::text_woarchive, T=const Foo ] .\Test.cpp(60) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator &<const Foo>(T &)' being compiled with [ Archive=boost::archive::text_woarchive, T=const Foo ]

2 1

Re: [Boost-users] Visual C++ 2005 help installing Boost
by Harry Georgakopoulos 17 Jan '07

17 Jan '07

I am having exactly the same problem as a previous user. Could you please show me how you fixed your boost build? I'm getting the following errors ...failed updating 120 targets ...skipped 80 targets... ...updated 847 targets... I don't know how to open the vsvars32.bat file in order to change the paths that Mr Kozicki suggested. Any help would be greatly appreciated. I have installed the latest SDK. Also, how do i get rid of the warnings? I know i need to define _SCL_SECURE_NO_DEPRECATE globally, but how do i do that exactly? Finally, how do i know i have a correct build install? How do i test it? Thank you Please send your response to hgeorgako(a)hotmail.com harry g.

5 5

program_options' exception "Only one tab per paragraph is allowed"
by Peng Yu 16 Jan '07

16 Jan '07

Hi, I got the following exception thrown, when I have multiple tabs (boost 1.33.1). The code worked fine with boost 1.32.0. I'm wondering if there any specific reason to throw this exception in the newer version. If I need multiple tabs, are there any work around? Thanks, Peng terminate called after throwing an instance of 'boost::program_options::error' what(): Only one tab per paragraph is allowed Aborted

1 0

including export.hpp
by Miguel Silvestre 16 Jan '07

16 Jan '07

Ok! Instantiation On the Documentation it says: "...the header file export.hpp has to come after all the archive header files... in the Instatiation. And in the code of the file basic_archive.hpp it says: #error "export.hpp must not be included before any archive header" :S -- Miguel Silvestre

1 1

[boost.python][newbie], i can't compile with it
by Voph Devel 16 Jan '07

16 Jan '07

hello I'm entirely new to boost and also to python... For my first step I'm still having troubles for compiling my c++ code. just including <boost/python.hpp> leads my gcc to output these errors. g++ -O0 -g3 -Wall -c -fmessage-length=0 -oEnvPython.o ../EnvPython.cpp In file included from /usr/include/boost/python/detail/prefix.hpp:13, from /usr/include/boost/python/args.hpp:8, from /usr/include/boost/python.hpp:11, from ../EnvPython.h:4, from ../EnvPython.cpp:1: /usr/include/boost/python/detail/wrap_python.hpp:50:23: error: pyconfig.h: No such file or directory /usr/include/boost/python/detail/wrap_python.hpp:74:24: error: patchlevel.h: No such file or directory /usr/include/boost/python/detail/wrap_python.hpp:77:2: error: #error Python 2.2 or higher is required for this version of Boost.Python. /usr/include/boost/python/detail/wrap_python.hpp:141:21: error: Python.h: No such file or directory ( and then a thousand lines of errors...) I didn't manually build boost and boost.python. I'm running Debian, and I have the corresponding .so files for boost and python in my usr/lib. I have python 2.3 2.4 and 2.5 installed. pyconfig.h seems to be auto-generated. but i haven't a single clue for launching this ? do you know about my problem ?

3 2

Re: [Boost-users] BoostCon 2007 Program Committee progress report
by Andrew Marlow 15 Jan '07

15 Jan '07

boost-users-bounces(a)lists.boost.org wrote: > It would probably make a lot more sense to combine it with > the annual ACCU conference in Oxford. Sounds interesting. I wonder how that would work? I usually attend the ACCU conferences and find myself torn between great talks that are happening at the same time. If boost talks were also going on at the time I might go crazy! > > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of > Andrew Marlow <snip> This sounds like the bees knees. > Unfortunately I will not be able to persaude my current > employer to send me and my colleagues to Colorado for that > week. What plans does Boost have for a UK conference please? ******************************************************************************" The data and information (collectively called Information) herein is the sole property of ICAP. The Information is confidential, may be legally privileged and is intended solely for the use of the individual or entity to whom it is addressed. Unauthorised disclosure, copying or distribution of the Information is strictly prohibited and the recipient of the Information shall not redistribute the Information in any form to a third party. If you received this Information in error please tell us by reply (or telephone the sender) and delete all copies on your system. References in this Information to ICAP are references to ICAP plc, a company incorporated in England with registered number 3611426 whose registered office is 2 Broadgate, London, EC2M 7UR and where the context requires, includes its subsidiary and associated undertakings. As applicable, certain companies within the ICAP group are authorised and regulated by the Financial Services Authority. Any investment research sent from ICAP will provide an impartial and objective assessment of the securities, companies or other matters that are the subject of their research and our Conflicts of Interest Management Policy regarding investment research can be viewed by requesting a copy from your usual contact at ICAP. Please visit www.icap.com for further regulatory information including details regarding the European eCommerce Directive. *******************************************************************************" We have taken precautions to minimise the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. " *******************************************************************************

1 0

Re: [Boost-users] BoostCon 2007 Program Committee progress report
by Schalk_Cronje＠McAfee.com 15 Jan '07

15 Jan '07

It would probably make a lot more sense to combine it with the annual ACCU conference in Oxford. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Andrew Marlow <snip> This sounds like the bees knees. Unfortunately I will not be able to persaude my current employer to send me and my colleagues to Colorado for that week. What plans does Boost have for a UK conference please? I am trying to get my employer to consider using boost for some platform independence. </snip>

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Re: [Boost-users] Deriving Serialization classes
by Miguel Silvestre 15 Jan '07

15 Jan '07

???? a) But I'm deriving it from text_archive_imp b) what? I didn't understand.. As I said the binary serialization is working fine c) Onde again what do you mean?? How can I derivate the serialization classes?? I've tried the following code to, but with the same error: class TextArchiveO : public IArchive, // don't derive from text_oarchive !!! public boost::archive::text_oarchive_impl<TextArchiveO> { public: TextArchiveO(std::ostream & os, unsigned flags = 0) : boost::archive::text_oarchive_impl<TextArchiveO>(os, flags) {} ~TextArchiveO(){} virtual void Serialize(int& t) { *this & BOOST_SERIALIZATION_NVP(t); } virtual void Serialize(bool& t) { *this & BOOST_SERIALIZATION_NVP(t); } }; class TextArchiveI : public IArchive, // don't derive from text_oarchive !!! public boost::archive::text_iarchive_impl<TextArchiveI> { public: TextArchiveI(std::istream & is, unsigned flags = 0) : boost::archive::text_iarchive_impl<TextArchiveI>(is,flags) {} ~TextArchiveI(){} virtual void Serialize(int& t) { *this & BOOST_SERIALIZATION_NVP(t); } virtual void Serialize(bool& t) { *this & BOOST_SERIALIZATION_NVP(t); } }; On 1/10/07, Robert Ramey <ramey(a)rrsd.com> wrote: > > > > a) try deriving from text_?archive_impl rather than IArray > b) If you're going to put your own archive in a separate file - make sure you find > a way to explicitly instantiat it. See text_oarchive.cpp in the library. > c) I wouldn't recommend using the HEAD branch for "real" code since > this is altered from time to time. > > Robert Ramey > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > -- Miguel Silvestre -- Miguel Silvestre

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Re: [Boost-users] BoostCon 2007 Program Committee progress report
by Andrew Marlow 15 Jan '07

15 Jan '07

boost-users-bounces(a)lists.boost.org wrote: > The conference dates (May 14-16) are firm, and other > arrangements are moving forward. See > http://www.boost.org/more/BoostCon07.html > This sounds like the bees knees. Unfortunately I will not be able to persaude my current employer to send me and my colleagues to Colorado for that week. What plans does Boost have for a UK conference please? I am trying to get my employer to consider using boost for some platform independence. Regards, Andrew Marlow ******************************************************************************" The data and information (collectively called Information) herein is the sole property of ICAP. The Information is confidential, may be legally privileged and is intended solely for the use of the individual or entity to whom it is addressed. Unauthorised disclosure, copying or distribution of the Information is strictly prohibited and the recipient of the Information shall not redistribute the Information in any form to a third party. If you received this Information in error please tell us by reply (or telephone the sender) and delete all copies on your system. References in this Information to ICAP are references to ICAP plc, a company incorporated in England with registered number 3611426 whose registered office is 2 Broadgate, London, EC2M 7UR and where the context requires, includes its subsidiary and associated undertakings. As applicable, certain companies within the ICAP group are authorised and regulated by the Financial Services Authority. Any investment research sent from ICAP will provide an impartial and objective assessment of the securities, companies or other matters that are the subject of their research and our Conflicts of Interest Management Policy regarding investment research can be viewed by requesting a copy from your usual contact at ICAP. Please visit www.icap.com for further regulatory information including details regarding the European eCommerce Directive. *******************************************************************************" We have taken precautions to minimise the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. " *******************************************************************************

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[bind] Overloaded function names
by Mark Ruzon 15 Jan '07

15 Jan '07

I have a function that performs the same task on several data types and data combinations: template <typename T> int f(const type1<T>& x); template <typename T> int f(const type2<T>& x); template <typename T> int f(const type2<T>& x, const type2<T>& y); I want to create a function object out of the second function. However, bind(f, _1) is ambiguous. Is there a way to disambiguate this using a bind call, or do I have to create my own function object? Thanks, Mark

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[BGL] remove_edge with vecS for vertices and setS for edges
by Alejandro Marcos Aragón 15 Jan '07

15 Jan '07

Hi everyone, I was wondering if the library handles the edge removal for graphs that use the vecS as a container for the vertices and the setS for the edges. I've been trying to use the function and I have a segmentation fault. Thank you, a^2

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What's wrong in regular expression
by Игорь Микушкин 15 Jan '07

15 Jan '07

Hello! I wrote the regular expression: ^\s*(?:([A-Za-z_]*)\s*=\s*([A-Za-z0-9_/\.]*)\s*)*$ for splitting lines like: name = abc value1 = def value2 = ghi I need the result like: match [1] = name match [2] = abc ... match [6] = ghi But I get ! : match [1] = value2 match [2] = ghi (the last 2 matches) What is wrong in my expression? Thank You. --------------------------------- Вы уже с Yahoo!? Испытайте обновленную и улучшенную Yahoo! Почту!

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[graph design] Advise needed - edge-to-edge passing cost
by james.jones＠firstinvestors.com 15 Jan '07

15 Jan '07

From: "Anton A. Patrushev" <anton(a)orkney.co.jp> > I need to construct a graph with following requirements: > 1. Edges should have a cost (trivial) > 2. Vertices should have a cost (also trivial) > 3. For each edge I need to define a costs of passing from this edge to > any other adjacent edge (my problem is here!) > It means that just vertex cost doesn't work - from one edge I can pass > to several edges through the same vertex and I need separate cost for > each way. > I can't split edges and vertices to many, 'cause in my case it will > drastically increase the data. > > Can anybody, please, make an advise how to implement the third rule? I'm not sure if this solves your problem, but have you considered constructing the dual of your graph and then using the vertex cost? - James Jones Administrative Data Mgmt. Webmaster 375 Raritan Center Pkwy, Suite A Data Architect Edison, NJ 08837

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[Boost.Serialization] Best way to serialize binary data?
by sadrok 14 Jan '07

14 Jan '07

Hello I need to serialize some raw binary data. What is the best way to do it for all three archive implementations? I've had troubles with the two text-based ones giving me base64 errors on loading when I use load_binary. Also I noticed that the xml_?archive doesn't produce nice XML when I use save/load_binary. Thanks -- sadrok(a)gmail.com Yahoo! IM: sadrok_za Jabber ID: sadrok(a)jabber.obsidian.co.za

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Boost conversion to struct tm for version 1.31
by debayan.bhattacharya＠firstinvestors.com 12 Jan '07

12 Jan '07

Hi all, I need some help converting a boost::gregorian::date to struct tm in version 1.31. to_tm(date) function dont seems to work in this version. Your help is greatly appreciated. Thanks Debayan

2 1

serialize std::map
by Mark Wyszomierski 12 Jan '07

12 Jan '07

Hi, I'm experiencing a runtime error while using boost's serialization for std::map. I am defining a map like: std::map<int, CSomeData> m; and serializing it as I do any other container or primitive type. However when the map contains more than two elements, there is a runtime exception when reading a serialized file back in. I'm using visual studio 8. Following is the exact source code I'm trying this with (very short sample app). Can anyone see what I'm doing wrong, or if there is an error with the boost code? I took a look at the written file in a binary editor and it looks fine. #include <boost/archive/binary_oarchive.hpp> #include <boost/archive/binary_iarchive.hpp> #include <boost/serialization/map.hpp> #include <fstream> #include <string> #include <map> using namespace std; // This is a test class to use as the map data. class CSomeData { public: CSomeData(){}; CSomeData(float f0, string str0) { m_f0 = f0; m_str0 = str0; } float m_f0; string m_str0; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & m_f0; ar & m_str0; } }; // This is the class we really want to try serializing. class CTest { public: CTest(){}; CTest(int nNumber) { m_nNumber = nNumber; // Fill with some dummy data. m_mTst.insert(make_pair(0, CSomeData(0.23f, "hi hi hi"))); m_mTst.insert(make_pair(1, CSomeData(7.65f, "second one"))); m_mTst.insert(make_pair(2, CSomeData(9.23f, "third one"))); m_mTst.insert(make_pair(3, CSomeData(5.6766, "chosen one"))); } ~CTest(){}; int m_nNumber; map<int, CSomeData> m_mTst; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & m_nNumber; ar & m_mTst; } }; int main() { std::ofstream ofs("filename"); // Write class instance to archive. Writing seems to work ok. const CTest ct(5); { boost::archive::binary_oarchive oa(ofs); oa << ct; } // Try to restore it sometime later. CTest ctNew; { std::ifstream ifs("filename", std::ios::binary); boost::archive::binary_iarchive ia(ifs); // READING CAUSES THE EXCEPTION! ia >> ctNew; } return 0; } Thanks, Mark

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Re: [Boost-users] [Threads]
by Robert Marion 12 Jan '07

12 Jan '07

Manuel Jung wrote: >> Hi, >> >> I have a strange problem. The destructor of a class calls join_all(). >> But it seems that he hangs there. Even though some other code behind the >> join_all() is executed before it finishs! >> Lets get concret: >> >> seal::~seal() >> { >> ThgPrgs.join_all(); >> cout<<"Crabd quits, goodbye"<<endl; >> } > > Could you possibly post a small (complete) example that demonstrates the > behaviour? I am not able to guess where to problem might be from looking > at the destructor only. Are you expecting the destructor to be called once? Probably what is happening is your default constructor is being called more than once (during a copy operation) and you are unaware of it. So your destructor gets called more than once. Robert Marion

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[graph design] Advise needed - edge-to-edge passing cost
by Anton A. Patrushev 12 Jan '07

12 Jan '07

Dear all, I need to construct a graph with following requirements: 1. Edges should have a cost (trivial) 2. Vertices should have a cost (also trivial) 3. For each edge I need to define a costs of passing from this edge to any other adjacent edge (my problem is here!) It means that just vertex cost doesn't work - from one edge I can pass to several edges through the same vertex and I need separate cost for each way. I can't split edges and vertices to many, 'cause in my case it will drastically increase the data. Can anybody, please, make an advise how to implement the third rule? Thanks! Anton.

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[bind, tuple] Custom comparison of tuple elements
by Mark Ruzon 12 Jan '07

12 Jan '07

Assume we have a range of objects of type tuple<T1,T2> and a function object that compares two objects of type T1. How would a person sort this range using this function object and bind? I want something along the lines of: std::sort(first, last, boost::bind<bool>(comp, boost::bind(boost::get<0>, _1), boost::bind(boost::get<0>, _2))); but this isn't remotely close to compiling. I could create a custom function object, but I'd rather learn how to use bind properly. Thanks, Mark

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Re: [Boost-users] portland group compilers (pg++, pgi, pgCC)
by Sohail Somani 11 Jan '07

11 Jan '07

> -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of > Server Levent Yilmaz > But with building libraries such as serialization and filesystem, I am > stuck. I have a very limited knowledge of bjam or any other large > scale build system for that matter. Hi, you might try the boost-build mailing list for better results. Good luck! Sohail

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optional_shared_ptr or shared_lazy_ptr extension
by Ovanes Markarian 11 Jan '07

11 Jan '07

Hello all, after some time spent for evaluating the possible scenarios I came up with the following idea. Design of a type wrapper similar to functionality offered by boost:shared_ptr and boost:optional. Let me try to explain the requirements: 1. The new type must model pointer semantics to wrapped type. 2. It must be refernece countable and multi-thread safe in regards of shared operations (copy etc.) as it is the case with shared_ptr 3. It should be able to create the wrapped type on first non-const member access request, which assumes a multi-thread safe operation (when shared accross multiple threads) 4. It should support InPlace factory and custom deleter types 5. It should not pre-allocate the storage for the contained type 6. It should be possible to use static_pointer_cast, dynamic_pointer_cast and const_pointer_cast operations with the new type. Why is optional not an option for me: 1. It preallocates memory, which I would like to save and allocate at first request only 2. The type should not implement deep copy semantics for the contained value type if copied, but act much like a shared_ptr (shallow copy) The most important use case: class A; Main Thread lazy_ptr<A> ptr; Thread 1 | Thread 2 | Thread 3 ------------+--------------------+------------- copy of ptr | copy of ptr | copy of ptr (use_count == 4, get()const returns NULL) | ptr.get()non-const | (use_count == 4, get()non-c will return valid A*) use(*ptr) | | use(*ptr) (using the same instance as created from Thread 2) If dealing intensively with big size data structures this approach can save a lot of memory if none of the threads needs an instance. All comments are highly appreciated. I also posted some comments on the similar issue, but got a suggestion to use boost::optional. Since I was not aware of all the requirements at that time I could not go ahead with a discussion. With Kind Regards, Ovanes Markarian

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[regex] difficulties with the "Leftmost Longest" Rule
by Detlef Meyer-Eltz 11 Jan '07

11 Jan '07

I have a difficulty to predict, which part of a regular expression will match. Example: I have a regular expression for a general HTML tag: <[^>]*> combined with an expression for the body tag: <body([^>]*)> to: (<[^>]*>)|(<body([^>]*)>) This expression matches the text: <body bgcolor="white"> As both alternatives can match the input with the same length, I expected, that the repeated fouth part of the "Leftmost Longest" Rule would determine, which alternatve is chosen: 4. Find the match which has matched the first sub-expression in the leftmost position, along with any ties. If there is only on(e) such match possible then return it. // note the missing 'e' As the tag-expression has no sub-expression at all, the body-expression should win. Its sub-expression could match, but doesn't. It seems to me, that the sequence of the alternatives determines the match. Now I guess, that I misinterpreted 4.: its not a means to predict the matching alternative but only to find the one that matched accidentally? My software constructs lexers from elementary expressions automatically. So it's important for me to direct and predict the expected matching alternative. Are there any other rules? Does the sequence of the alternatives determine the match unmistakably? With Kind Regards, Detlef Meyer-Eltz

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[Threads]
by Manuel Jung 11 Jan '07

11 Jan '07

Hi, I have a strange problem. The destructor of a class calls join_all(). But it seems that he hangs there. Even though some other code behind the join_all() is executed before it finishs! Lets get concret: seal::~seal() { ThgPrgs.join_all(); cout<<"Crabd quits, goodbye"<<endl; } When i run my program, the last message is "Crabd quits, goodbye" and it should exit then, but it doesnt. If i stop it running in gdb an do a backtrace i get the following: #0 0xffffe410 in __kernel_vsyscall () #1 0xb7c796c8 in pthread_join () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb7d21e6a in boost::thread::join () from /usr/local/lib/libboost_thread-gcc-mt-1_33_1.so.1.33.1 #3 0xb7d224ee in boost::thread_group::join_all () from /usr/local/lib/libboost_thread-gcc-mt-1_33_1.so.1.33.1 #4 0x0808742c in ~seal (this=0x80c9890) at src/seal.cpp:20 #5 0x0808eb55 in checked_delete<seal> (x=0x80c9890) at /usr/local/include/boost/checked_delete.hpp:34 #6 0x0809566a in boost::detail::sp_counted_impl_p<seal>::dispose (this=0x80dc410) at /usr/local/include/boost/detail/sp_counted_impl.hpp:76 #7 0x0805950f in boost::detail::sp_counted_base::release (this=0x80dc410) at /usr/local/include/boost/detail/sp_counted_base_gcc_x86.hpp:145 #8 0x08059555 in ~shared_count (this=0x8103e04) at /usr/local/include/boost/detail/shared_count.hpp:159 #9 0x0808dd1c in ~shared_ptr (this=0x8103e00) at src/seal.h:39 #10 0x08089182 in ~tcp_connection (this=0x8103df8) at src/seal.cpp:212 #11 0x08094273 in checked_delete<tcp_connection> (x=0x8103df8) at /usr/local/include/boost/checked_delete.hpp:34 #12 0x080967d0 in boost::detail::sp_counted_impl_p<tcp_connection>::dispose (this=0x80dcf00) at /usr/local/include/boost/detail/sp_counted_impl.hpp:76 #13 0x0805950f in boost::detail::sp_counted_base::release (this=0x80dcf00) at /usr/local/include/boost/detail/sp_counted_base_gcc_x86.hpp:145 #14 0x08059555 in ~shared_count (this=0x80dc4e8) at /usr/local/include/boost/detail/shared_count.hpp:159 #15 0x0808ddc6 in ~shared_ptr (this=0x80dc4e4) at src/seal.h:66 #16 0x0808e69f in ~value (this=0x80dc4e4) at src/seal.cpp:232 #17 0x0808e700 in ~list3 (this=0x80dc4e0) at src/seal.cpp:232 #18 0x0808e766 in ~bind_t (this=0x80dc4d8) at src/seal.cpp:232 #19 0x080910a7 in ~accept_handler (this=0x80dc4c0) at /usr/local/include/boost/asio/detail/reactive_socket_service.hpp:1228 ---Type <return> to continue, or q <return> to quit--- #20 0x08095595 in ~op (this=0x80dc4b0) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:355 #21 0x080918db in boost::asio::detail::reactor_op_queue<int>::op<boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp, boost::asio::detail::epoll_reactor<false> >::accept_handler<boost::asio::basic_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >, boost::_bi::bind_t<void, boost::_mfi::mf2<void, tcp_server, boost::shared_ptr<tcp_connection>, boost::asio::error const&>, boost::_bi::list3<boost::_bi::value<tcp_server*>, boost::_bi::value<boost::shared_ptr<tcp_connection> >, boost::arg<1> > > > >::destroy_handler (base=0x80dc4b0) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:355 #22 0x080709d2 in boost::asio::detail::reactor_op_queue<int>::op_base::destroy (this=0x80dc4b0) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:294 #23 0x0806df75 in boost::asio::detail::reactor_op_queue<int>::destroy_operations (this=0x80c99a8) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:245 #24 0x0806d677 in boost::asio::detail::epoll_reactor<false>::shutdown_service (this=0x80c9970) at /usr/local/include/boost/asio/detail/epoll_reactor.hpp:108 #25 0x0806c2ec in ~service_registry (this=0x80c98d8) at /usr/local/include/boost/asio/detail/service_registry.hpp:53 #26 0x0806ba81 in ~io_service (this=0x80c98d4) at src/seal.cpp:8 #27 0x08087648 in ~seal (this=0x80c9890) at src/seal.cpp:32 #28 0x0808eb55 in checked_delete<seal> (x=0x80c9890) at /usr/local/include/boost/checked_delete.hpp:34 #29 0x0809566a in boost::detail::sp_counted_impl_p<seal>::dispose (this=0x80da710) at /usr/local/include/boost/detail/sp_counted_impl.hpp:76 #30 0x0805950f in boost::detail::sp_counted_base::release (this=0x80da710) at /usr/local/include/boost/detail/sp_counted_base_gcc_x86.hpp:145 #31 0x08059555 in ~shared_count (this=0xbfa2e124) at /usr/local/include/boost/detail/shared_count.hpp:159 #32 0x0808dd1c in ~shared_ptr (this=0xbfa2e120) at src/seal.h:39 #33 0x080a8d68 in boost::shared_ptr<seal>::reset (this=0x80c8824) at /usr/local/include/boost/shared_ptr.hpp:231 #34 0x080a863e in main (argc=1, argv=0xbfa2e204) at src/crabd.cpp:71 The class seal holds some other classes in shared_ptrs which are will be destroyed in this moment too. Some of them have also a join_all() in their destructors. Im wondering if they produce the lock? But the main question here is: I read "Crabd quits, goodbye" and after this i stop the program and i get in the backtrace from gdb the line "#4 0x0808742c in ~seal (this=0x80c9890) at src/seal.cpp:20". And Line 20 in seal.cpp is the line with join_all(). How is this possible, though join_all should block? Thanks for your help and for reading this. Manuel Jung, Germany

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[Statechart] Porting to Embedded Linux and C (not C++)
by Stern, Eli 11 Jan '07

11 Jan '07

For the embedded software project I am working on, we are seeking a library to run Statecharts. The run-time environment is : * ARM cpu * Linux 2.6 * C (not C++) * Embedded / real-time application I read about the Boost.Statechart tool, and have some questions, mostly concerning the run-time part of the tool. 1. Is there anyone out there using the tool on similar environments? a. If you do i. Can you comment on the effort required to port the tool to a Linux (preferably 2.6) environment? ii. Can you supply some measures concerning real-time restrictions caused by using the tool (added latencies, memory usage, determinism, ...) b. Can one of the developers comment on the above (assuming there are no user comments)? 1. One of my greatest concern is the fact we are working in C. This introduces several problems a. Mixing C and C++. This is my smallest concern, since the compilers should have solved this long ago. b. Connecting the C++ produced by the tool to our C code. c. We do not have personnel proficient in C++. This means that the above problems, together with any deeper understanding of the internals of the tool will be problematic. This will hurt mostly during debug and integration. 2. Is there a visual tool to draw statecharts that generates Boost.Statechart code? 3. I did not find the tool on boost.org. Does this mean it has not been formally released? I would appreciate any comment on any of the above subjects. Thanx Eli Stern

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[Statechart] Request for user experience/opinion
by Stern, Eli 10 Jan '07

10 Jan '07

As [Statechart] seems not to be in the official Boost distribution, I would like to get some users' opinions of the quality and stability of this tool. Thanx Eli Stern

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Re: [Boost-users] [boost.mpl] Implementing a numeric index access to fields of a composite class created with mpl::inherit_linearly
by Ovanes Markarian 10 Jan '07

10 Jan '07

Hi! you could use an mpl::pair type to produce a static mapping of int value to type: mpl::pair<mpl::int_<0>, int> This is a little bit ugly, to write such a big construct, so you can write the following construct template<int N, class T> struct pair_c : mpl::pair<mpl::int_<N>, T> {}; Actually pair_c could be your DataField struct, so you can add the T instance to it: template<int N, class T> struct pair_c : mpl::pair<mpl::int_<N>, T> { T dataField; }; Now you can define a vector of pair types as follows: mpl::vector<pair_c<0, int>, pair_c<1, int>, pair_c<2, int> > my_vector; we use in this sample pair_c to make any type unique, dependent on the position in the vector. The next step would be to define the class with linear inheritance: template<class Seq> struct linear_inherited : boost::mpl::inherit_linearly < Seq , boost::mpl::inherit<boost::mpl::_1, boost::mpl::_2> >::type {}; But now you would need the access function. I suggest to integrate this function as a linear_inherited member: template<class Seq> struct linear_inherited : boost::mpl::inherit_linearly < Seq , boost::mpl::inherit<boost::mpl::_1, boost::mpl::_2> >::type { template<long N> typename boost::mpl::at_c<Seq, N>::type::second& nth_field() { typedef typename boost::mpl::at_c<Seq, N>::type* ptr_type; ptr_type ptr = static_cast<ptr_type>(this); return ptr->dataField; } }; When this function is a member you save some effor on passing the sequence type to its specialization, otherwise it will not know which type is meant. Let me explain this function: mpl has the at metafunction, which can access the Nth element of a static vector. Here this function is used to calculate the result_type (in our case it is always int, but we want to be generic ;), so you can make pair_c<0, double>, pair_c<1, SomeStruct> etc.). The at metafunction returns the type which was in the vector at this position, in our case this type is pair_c. Now we need to access the field type T. mpl::pair is defined as template <class X, class Y> struct pair { typedef X first; typedef Y second; }; so, the type of our datafield in pair_c is of type second. Therefore the function nth_field returns reference to second. In the function itself we use the static_cast operator to calculate the offset to our datafield within the class. And then we return the the field contained there. Below is the full listing I used to test and compile the scenario: linear_inh_test.h ---------- START ------------------- #ifndef __OM_LINEAR_INHERITANCE_TEST_H__ #define __OM_LINEAR_INHERITANCE_TEST_H__ #include <boost/mpl/at.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/lambda.hpp> #include <boost/mpl/inherit.hpp> #include <boost/mpl/identity.hpp> #include <boost/mpl/placeholders.hpp> #include <boost/mpl/inherit_linearly.hpp> template<int N, class T> struct pair_c : boost::mpl::pair<boost::mpl::int_<N>, T> { T dataField; }; template<class Seq> struct linear_inherited : boost::mpl::inherit_linearly < Seq , boost::mpl::inherit<boost::mpl::_1, boost::mpl::_2> >::type { template<long N> typename boost::mpl::at_c<Seq, N>::type::second& nth_field() { typedef typename boost::mpl::at_c<Seq, N>::type* ptr_type; ptr_type ptr = static_cast<ptr_type>(this); return ptr->dataField; } }; #endif __________ END ___________________ main.cpp ---------- START ------------------- #include "linear_inh_test.h" #include <cassert> #include <boost/mpl/vector.hpp> int main() { using namespace boost; typedef mpl::vector<pair_c<0, int>, pair_c<1, int>, pair_c<2, int> > my_vector; linear_inherited<my_vector> test_instance; int& ref0 = test_instance.nth_field<0>(); ref0 = 0; int& ref1 = test_instance.nth_field<1>(); ref1 = 1; int& ref2 = test_instance.nth_field<2>(); ref2 = 2; assert( test_instance.nth_field<0>() != test_instance.nth_field<1>() != test_instance.nth_field<2>() ); return 0; } __________ END ___________________ With Kind Regards, Ovanes Markarian On Tue, January 9, 2007 21:51, Khalil Shalish wrote: > Hello, > > I created the following composite class using mpl::inherit_linearly: > > template <class T> > struct DataField { > T data; > } > > typedef mpl::inherit_linearly< > mpl::vector< int, int, int> > mpl::inherit< DataField<_2>, _1 > >> Int3Composite; > > Int3Composite int3comp; > > Since the type of each data field is an int, I cannot use the type of the field to access the data in the field. > > Q: Is there a way to write a template (call it get_field) to access the data using numeric position in the type sequence. Something like this: > > int field_0 = get_field<0>(in3comp); //This returns the first int data field. int field_1 = get_field<1>(int3comp); > > I am very new to C++ template programming and any help on this will be very much appreciated. > > Thank you, > Khalil Shalish > kshalish(a)austin.rr.com > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > With Kind Regards, Ovanes

1 1

Deriving Serialization classes
by Miguel Silvestre 10 Jan '07

10 Jan '07

Hi there!!! Now I'm trying to include the boost serialization library on my project through class derivation. I've followed the demo_fast_archive.cpp and the binary serialization is compiling and working fine. Now I'me trying to make the same for the text serialization and then for the xml serialization. But when compiling I'm getting these link errors: Linking... Creating library ..\..\Bin\silvestre.lib and object ..\..\Bin\silvestre.exp main2.obj : error LNK2019: unresolved external symbol "public: __thiscall boost::archive::text_oarchive_impl<class FlowEngine::TextArchiveO>::text_oarchive_impl<class FlowEngine::TextArchiveO>(class std::basic_ostream<char,struct std::char_traits<char> > &,unsigned int)" ( ??0?$text_oarchive_impl@VTextArchiveO@FlowEngine@@@archive@boost@@QAE@AAV?$basic_ostream@DU?$char_traits@D@std@@@std@@I@Z) referenced in function "public: __thiscall FlowEngine::TextArchiveO::TextArchiveO(class std::basic_ostream<char,struct std::char_traits<char> > &,unsigned int)" ( ??0TextArchiveO@FlowEngine@@QAE@AAV?$basic_ostream@DU?$char_traits@D@std@@@std@@I@Z ) main2.obj : error LNK2019: unresolved external symbol "public: __thiscall boost::archive::text_iarchive_impl<class FlowEngine::TextArchiveI>::text_iarchive_impl<class FlowEngine::TextArchiveI>(class std::basic_istream<char,struct std::char_traits<char> > &,unsigned int)" ( ??0?$text_iarchive_impl@VTextArchiveI@FlowEngine@@@archive@boost@@QAE@AAV?$basic_istream@DU?$char_traits@D@std@@@std@@I@Z) referenced in function "public: __thiscall FlowEngine::TextArchiveI::TextArchiveI(class std::basic_istream<char,struct std::char_traits<char> > &,unsigned int)" ( ??0TextArchiveI@FlowEngine@@QAE@AAV?$basic_istream@DU?$char_traits@D@std@@@std@@I@Z ) main2.obj : error LNK2019: unresolved external symbol "public: void __thiscall boost::archive::text_iarchive_impl<class FlowEngine::TextArchiveI>::load_override(struct boost::archive::class_name_type &,int)" ( ?load_override@?$text_iarchive_impl@VTextArchiveI@FlowEngine@@@archive@boost@@QAEXAAUclass_name_type@23@H@Z) referenced in function "protected: void __thiscall FlowEngine::TextArchiveI::load_override<struct boost::archive::class_name_type>(struct boost::archive::class_name_type &,int)" ( ??$load_override@Uclass_name_type@archive@boost@@@TextArchiveI@FlowEngine@@IAEXAAUclass_name_type@archive@boost@@H@Z ) main2.obj : error LNK2019: unresolved external symbol "public: void __thiscall boost::archive::text_oarchive_impl<class FlowEngine::TextArchiveO>::save(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" ( ?save@?$text_oarchive_impl@VTextArchiveO@FlowEngine@@@archive@boost@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) referenced in function "public: static void __cdecl boost::archive::save_access::save_primitive<class FlowEngine::TextArchiveO,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >(class FlowEngine::TextArchiveO &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" ( ??$save_primitive@VTextArchiveO@FlowEngine@@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@save_access@archive@boost@@SAXAAVTextArchiveO@FlowEngine@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z ) ..\..\Bin\silvestre.exe : fatal error LNK1120: 4 unresolved externals Error executing link.exe (tool returned code: 1120) silvestre - 5 error(s), 0 warning(s) For a better understand of the problem I'm going to attach the source files Note that I've not tested/look XMLSerialization.h, so it must have errors to I guess.. -- Miguel Silvestre

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What happened to my post?
by Ovanes Markarian 10 Jan '07

10 Jan '07

Hi! I posted 1.5 hours ago an answer to this mailing: http://lists.boost.org/boost-users/2007/01/24486.php But it is still not online? My opponent might wish to get an answer. Why does it take so long? Is it the size of my post (about 5K)? With Kind Regards, Ovanes Markarian

1 0

Mailing list outage on Friday, January 12 2007
by Doug Gregor 10 Jan '07

10 Jan '07

There will be a short mailing list outage on Friday, January 12th while we migrate the Boost mailing lists to a new, more powerful server. The migration will occur in the following time-frame: - 06:00am-10:00am Pacific US time - 07:00am-11:00am Mountain US time - 08:00am-12:00pm Central US time - 09:00am-01:00pm Indiana time - 09:00am-01:00pm Eastern US time - 02:00pm-06:00pm GMT All of the Boost mailing lists hosted at lists.boost org, along with their mail archives, will be unavailable during this time. Doug Gregor Open Systems Lab @ Indiana University

1 0

[boost.mpl] Implementing a numeric index access to fields of a composite class created with mpl::inherit_linearly
by Khalil Shalish 10 Jan '07

10 Jan '07

Hello, I created the following composite class using mpl::inherit_linearly: template <class T> struct DataField { T data; } typedef mpl::inherit_linearly< mpl::vector< int, int, int> mpl::inherit< DataField<_2>, _1 > > Int3Composite; Int3Composite int3comp; Since the type of each data field is an int, I cannot use the type of the field to access the data in the field. Q: Is there a way to write a template (call it get_field) to access the data using numeric position in the type sequence. Something like this: int field_0 = get_field<0>(in3comp); //This returns the first int data field. int field_1 = get_field<1>(int3comp); I am very new to C++ template programming and any help on this will be very much appreciated. Thank you, Khalil Shalish kshalish(a)austin.rr.com

3 2

operators << and >> on boost serialization
by Miguel Silvestre 10 Jan '07

10 Jan '07

Ok! I'm starting to freaking out, because I just can't figure it out some compilation errors when trying to use the boost serialization library. I just can't manage what I'm doing wrong. Ok, I think that the best way to translate my problem is to post the code and the changes I'm trying to do: So ans as you can see on the attached file: My project and all of my classes are inside a namespace the FlowEngine. I have 3 classes: A; B and C to test the boost serialization. As it is now it compiles and runs good. But I take the comments of class A to split member serialization, just doing that I get this errors when compiling: \3rdparty\include\boost\serialization\access.hpp(93) : error C2662: 'void FlowEngine::A::save<Archive>(Archive &,const unsigned int)' : cannot convert 'this' pointer from 'const FlowEngine::A' to 'FlowEngine::A &' with [ Archive=boost::archive::text_oarchive ] Conversion loses qualifiers \3rdparty\include\boost\serialization\split_member.hpp(43) : see reference to function template instantiation 'void boost::serialization::access::member_save<Archive,const T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\serialization\split_member.hpp(42) : while compiling class template member function 'void boost::serialization::detail::member_saver<Archive,T>::invoke(Archive &,const T &,const unsigned int)' with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\serialization\split_member.hpp(69) : see reference to class template instantiation 'boost::serialization::detail::member_saver<Archive,T>' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \samples\silvestre\main2.cpp(82) : see reference to function template instantiation 'void boost::serialization::split_member<Archive,FlowEngine::A>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\serialization\access.hpp(109) : see reference to function template instantiation 'void FlowEngine::A::serialize<Archive>(Archive &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive ] \3rdparty\include\boost\serialization\serialization.hpp(81) : see reference to function template instantiation 'void boost::serialization::access::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\serialization\serialization.hpp(140) : see reference to function template instantiation 'void boost::serialization::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(152) : see reference to function template instantiation 'void boost::serialization::serialize_adl<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(145) : while compiling class template member function 'void boost::archive::detail::oserializer<Archive,T>::save_object_data(boost::archive::detail::basic_oarchive &,const void *) const' with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(163) : see reference to class template instantiation 'boost::archive::detail::oserializer<Archive,T>' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(162) : while compiling class template member function 'const boost::archive::detail::basic_oserializer &boost::archive::detail::pointer_oserializer<T,Archive>::get_basic_serializer(void) const' with [ T=FlowEngine::A, Archive=boost::archive::text_oarchive ] \3rdparty\include\boost\archive\detail\oserializer.hpp(515) : see reference to class template instantiation 'boost::archive::detail::pointer_oserializer<T,Archive>' being compiled with [ T=FlowEngine::A, Archive=boost::archive::text_oarchive ] \3rdparty\include\boost\archive\detail\interface_oarchive.hpp(58) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_oserializer &boost::archive::detail::instantiate_pointer_oserializer<Archive,T>(Archive *,T *)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(344) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_oserializer *boost::archive::detail::interface_oarchive<Archive>::register_type<T>(const T *)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(343) : while compiling class template member function 'const boost::archive::detail::basic_pointer_oserializer *boost::archive::detail::save_pointer_type<Archive,TPtr>::non_abstract<T>::register_type(Archive &)' with [ Archive=boost::archive::text_oarchive, TPtr=FlowEngine::A *, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(360) : see reference to class template instantiation 'boost::archive::detail::save_pointer_type<Archive,TPtr>::non_abstract<T>' being compiled with [ Archive=boost::archive::text_oarchive, TPtr=FlowEngine::A *, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(460) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_oserializer *boost::archive::detail::save_pointer_type<Archive,TPtr>::register_type<FlowEngine::A>(Archive &,T &)' being compiled with [ Archive=boost::archive::text_oarchive, TPtr=FlowEngine::A *, T=FlowEngine::A ] \3rdparty\include\boost\archive\detail\oserializer.hpp(447) : while compiling class template member function 'void boost::archive::detail::save_pointer_type<Archive,TPtr>::invoke(Archive &,const TPtr)' with [ Archive=boost::archive::text_oarchive, TPtr=FlowEngine::A * ] \3rdparty\include\boost\archive\detail\oserializer.hpp(536) : see reference to class template instantiation 'boost::archive::detail::save_pointer_type<Archive,TPtr>' being compiled with [ Archive=boost::archive::text_oarchive, TPtr=FlowEngine::A * ] \3rdparty\include\boost\archive\basic_text_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::save<Archive,const T>(Archive &,const T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] \3rdparty\include\boost\archive\detail\interface_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::basic_text_oarchive<Archive>::save_override<T>(T &,int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] \3rdparty\include\boost\archive\detail\interface_oarchive.hpp(86) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator <<<const T>(T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] \samples\silvestre\main2.cpp(190) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator &<FlowEngine::A*>(T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] And if I just change the operator & with the operators << or >> on the silv task class I get this compilation errors: 3rdparty\include\boost\archive\detail\oserializer.hpp(567) : error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>' with [ x=false ] d:\flow project\flowengine\3rdparty\include\boost\archive\basic_text_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::save<Archive,T>(Archive &,T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] d:\flow project\flowengine\3rdparty\include\boost\archive\detail\interface_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::basic_text_oarchive<Archive>::save_override<T>(T &,int)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] d:\flow project\flowengine\samples\silvestre\main2.cpp(190) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator <<<FlowEngine::A*>(T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=FlowEngine::A * ] Anyone??? Pleaaaaseeeee??????????? -- Miguel Silvestre

3 9

Re: [Boost-users] [date_time] timezone rules for different years
by Stephen Turner 10 Jan '07

10 Jan '07

> -----Original Message----- > Date: Wed, 10 Jan 2007 08:12:18 -0700 > From: Jeff Garland <jeff(a)crystalclearsoftware.com> > > Yes, sorry I was off the net on holiday for an extended > period :-) Finally getting caught up now... > Thanks! > I would recommend that this be created as an alternative > tz_database class -- > something like 'historic timezone database'. My experience > is that must > applications don't need the historic data and hence only > really care about > loading up the current set of rules. I'm sure that's true for many users. But I also wonder how many users there are who do care but haven't had a problem until now because they're in countries where the rules haven't changed in recent years, so it's just worked. But let me put it the other way round. If a historical database were available, why would anyone choose to still use the existing method? Assuming the new method didn't impose a noticeable speed or memory constraint, of course. -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)

2 1

Re: [Boost-users] Support for extended Daylight Saving Time in 2007
by Stephen Turner 10 Jan '07

10 Jan '07

> Date: Wed, 10 Jan 2007 08:17:38 -0700 > From: Jeff Garland <jeff(a)crystalclearsoftware.com> > > Yep, in fact I was looking for someone that has time to look > at this carefully > to do this update and send me a patch -- someone about a > month ago said they > would do this, but haven't seen anything yet. You certainly need to change 1;0;4 to 2;0;3 and -1;0;10 to 1;0;11 for all U.S. and Canadian locations. (At least, all locations that observe DST). I have read that Mexico isn't changing, but I'm not sure about Caribbean or Central American countries. -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)

1 0

[Threads] join_all() strange behavior?
by Manuel Jung 10 Jan '07

10 Jan '07

Hi, I have a strange problem. The destructor of a class calls join_all(). But it seems that he hangs there. Even though some other code behind the join_all() is executed before it finishs! Lets get concret: seal::~seal() { ThgPrgs.join_all(); cout<<"Crabd quits, goodbye"<<endl; } When i run my program, the last message is "Crabd quits, goodbye" and it should exit then, but it doesnt. If i stop it running in gdb an do a backtrace i get the following: #0 0xffffe410 in __kernel_vsyscall () #1 0xb7c796c8 in pthread_join () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb7d21e6a in boost::thread::join () from /usr/local/lib/libboost_thread-gcc-mt-1_33_1.so.1.33.1 #3 0xb7d224ee in boost::thread_group::join_all () from /usr/local/lib/libboost_thread-gcc-mt-1_33_1.so.1.33.1 #4 0x0808742c in ~seal (this=0x80c9890) at src/seal.cpp:20 #5 0x0808eb55 in checked_delete<seal> (x=0x80c9890) at /usr/local/include/boost/checked_delete.hpp:34 #6 0x0809566a in boost::detail::sp_counted_impl_p<seal>::dispose (this=0x80dc410) at /usr/local/include/boost/detail/sp_counted_impl.hpp:76 #7 0x0805950f in boost::detail::sp_counted_base::release (this=0x80dc410) at /usr/local/include/boost/detail/sp_counted_base_gcc_x86.hpp:145 #8 0x08059555 in ~shared_count (this=0x8103e04) at /usr/local/include/boost/detail/shared_count.hpp:159 #9 0x0808dd1c in ~shared_ptr (this=0x8103e00) at src/seal.h:39 #10 0x08089182 in ~tcp_connection (this=0x8103df8) at src/seal.cpp:212 #11 0x08094273 in checked_delete<tcp_connection> (x=0x8103df8) at /usr/local/include/boost/checked_delete.hpp:34 #12 0x080967d0 in boost::detail::sp_counted_impl_p<tcp_connection>::dispose (this=0x80dcf00) at /usr/local/include/boost/detail/sp_counted_impl.hpp:76 #13 0x0805950f in boost::detail::sp_counted_base::release (this=0x80dcf00) at /usr/local/include/boost/detail/sp_counted_base_gcc_x86.hpp:145 #14 0x08059555 in ~shared_count (this=0x80dc4e8) at /usr/local/include/boost/detail/shared_count.hpp:159 #15 0x0808ddc6 in ~shared_ptr (this=0x80dc4e4) at src/seal.h:66 #16 0x0808e69f in ~value (this=0x80dc4e4) at src/seal.cpp:232 #17 0x0808e700 in ~list3 (this=0x80dc4e0) at src/seal.cpp:232 #18 0x0808e766 in ~bind_t (this=0x80dc4d8) at src/seal.cpp:232 #19 0x080910a7 in ~accept_handler (this=0x80dc4c0) at /usr/local/include/boost/asio/detail/reactive_socket_service.hpp:1228 ---Type <return> to continue, or q <return> to quit--- #20 0x08095595 in ~op (this=0x80dc4b0) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:355 #21 0x080918db in boost::asio::detail::reactor_op_queue<int>::op <boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp, boost::asio::detail::epoll_reactor<false> >::accept_handler<boost::asio::basic_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >, boost::_bi::bind_t<void, boost::_mfi::mf2<void, tcp_server, boost::shared_ptr<tcp_connection>, boost::asio::error const&>, boost::_bi::list3<boost::_bi::value<tcp_server*>, boost::_bi::value<boost::shared_ptr<tcp_connection> >, boost::arg<1> > > > >::destroy_handler (base=0x80dc4b0) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:355 #22 0x080709d2 in boost::asio::detail::reactor_op_queue<int>::op_base::destroy (this=0x80dc4b0) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:294 #23 0x0806df75 in boost::asio::detail::reactor_op_queue<int>::destroy_operations (this=0x80c99a8) at /usr/local/include/boost/asio/detail/reactor_op_queue.hpp:245 #24 0x0806d677 in boost::asio::detail::epoll_reactor<false>::shutdown_service (this=0x80c9970) at /usr/local/include/boost/asio/detail/epoll_reactor.hpp:108 #25 0x0806c2ec in ~service_registry (this=0x80c98d8) at /usr/local/include/boost/asio/detail/service_registry.hpp:53 #26 0x0806ba81 in ~io_service (this=0x80c98d4) at src/seal.cpp:8 #27 0x08087648 in ~seal (this=0x80c9890) at src/seal.cpp:32 #28 0x0808eb55 in checked_delete<seal> (x=0x80c9890) at /usr/local/include/boost/checked_delete.hpp:34 #29 0x0809566a in boost::detail::sp_counted_impl_p<seal>::dispose (this=0x80da710) at /usr/local/include/boost/detail/sp_counted_impl.hpp:76 #30 0x0805950f in boost::detail::sp_counted_base::release (this=0x80da710) at /usr/local/include/boost/detail/sp_counted_base_gcc_x86.hpp:145 #31 0x08059555 in ~shared_count (this=0xbfa2e124) at /usr/local/include/boost/detail/shared_count.hpp:159 #32 0x0808dd1c in ~shared_ptr (this=0xbfa2e120) at src/seal.h:39 #33 0x080a8d68 in boost::shared_ptr<seal>::reset (this=0x80c8824) at /usr/local/include/boost/shared_ptr.hpp:231 #34 0x080a863e in main (argc=1, argv=0xbfa2e204) at src/crabd.cpp:71 The class seal holds some other classes in shared_ptrs which are will be destroyed in this moment too. Some of them have also a join_all() in their destructors. Im wondering if they produce the lock? But the main question here is: I read "Crabd quits, goodbye" and after this i stop the program and i get in the backtrace from gdb the line "#4 0x0808742c in ~seal (this=0x80c9890) at src/seal.cpp:20". And Line 20 in seal.cpp is the line with join_all(). How is this possible, though join_all should block? Thanks for your help and for reading this. Manuel Jung, Germany

2 1

Re: [Boost-users] Support for extended Daylight Saving Time in 2007
by Stephen Turner 10 Jan '07

10 Jan '07

> Date: Mon, 8 Jan 2007 21:25:24 -0500 > From: "Eric Yankowitz" <nnews(a)swiftdesign.com> > Subject: [Boost-users] Support for extended Daylight Saving Time in > 2007 > > Been trying to find information describing boost's level of > support for the > four week Daylight Saving Time extension in the US that will > occur this > March. > (http://geography.about.com/cs/daylightsavings/a/dst.htm) I haven't > been able to find very much. A lot of software is having > issues and was > wondering if Boost was ready for the event? > > Was able to find these links, which suggested issues: > > > http://sourceforge.net/tracker/index.php?func=detail&aid=14717 > 23&group_id=7586&atid=207586 > > > http://sourceforge.net/tracker/index.php?func=detail&aid=14786 > 19&group_id=7586&atid=207586 > > Any idea if these are being resolved? And if any others exist? > Eric, I'm a new user of this code, so take everything I say with the appropriate amount of caution, but I have looked into this question a little. My conclusion is that the date_time library is still shipping with the old timezone rules at the moment. It's easy to change the date_time_zonespec.csv file to use the new rules instead (you can do that yourself, and I assume that the official version will do it soon too). However, at the moment the code doesn't seem to support different timezone rules for different years, so once you've changed it, you're out of luck if you want to look up times in 2006. See my previous post about this subject at http://article.gmane.org/gmane.comp.lib.boost.user/23837 Hope that helps, -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)

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Boost: unordered library installation problem
by chun ping wang 10 Jan '07

10 Jan '07

I tried building the boost unordered library and i get like this error. exactly how do i build the boost unordered library. 'boost-build C:\cygwin\home\Chun ping Wang\boostBeta\unordered/../boost/tools /build/v2 ;' but we were unable to find "bootstrap.jam" in the specified directory or in BOOST_BUILD_PATH (searching C:\cygwin\home\Chun ping Wang\boostBeta\unorde red/../boost/tools/build/v2).

3 3

BOOST_CHECK and functions with more than one template parameter
by Rob Caldecott 09 Jan '07

09 Jan '07

I am trying to test a template function that takes two template parameters, and, because of the "comma in macros" compiler issue, I have hit a brick wall. For example: template<typename T1, typename T2> int func(const T1& t1, const T2& t2) { ... } BOOST_CHECK_EQUAL(func<std::string, int>("Test", 1234), 1234); When compiling BOOST_CHECK_EQUAL above, I get an error due to the comma between std::string and int. As this is a function, I cannot use typedef, and trying to #define a workaround also fails (I am using VS2005). Any ideas how I can test template functions with more than one template parameter? Thanks in advance.

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GCC_BIN_DIRECTORY problem
by remi 09 Jan '07

09 Jan '07

hi i cross compile boost but i see that it impossible tu use the correct GCC with the command GCC_BIN_DIRECTORY How can i compile with another gcc ??!! best regards __________________________________________________ Do You Yahoo!? En finir avec le spam? Yahoo! Mail vous offre la meilleure protection possible contre les messages non sollicités http://mail.yahoo.fr Yahoo! Mail

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Re: [Boost-users] [date_time] timezone rules for different years
by Stephen Turner 09 Jan '07

09 Jan '07

> -----Original Message----- > From: Stephen Turner [mailto:sturner@clicktracks.com] > Sent: 04 January 2007 16:02 > To: 'boost-users(a)lists.boost.org' > Subject: RE: [date_time] timezone rules for different years > > [...snip...] > > Actually, I think the hardest part would be populating the > date_time_zonespec.csv file. Is there already a program to > generate that file from the zoneinfo files, or was it done > semi-by-hand? > Of course, an alternative might be for the library to read the actual zoneinfo files, rather than to extend the intermediate zonespec.csv format. I'm not sure which would be better. -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)

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Re: [Boost-users] cross compiling boost
by Hughes, James 09 Jan '07

09 Jan '07

If you are cross compiling boost, you don't need to cross compile bjam - just compile it for your host machine (I assume a PC with Windows or Linux). Then use that bjam to cross compile boost with the command line posted earlier. James > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of remi > Sent: 09 January 2007 11:23 > To: boost-users(a)lists.boost.org > Subject: [Boost-users] cross compiling boost > > > hi, > > I have a problem to create bjam with another toolset called > arm-linux-gcc. I use ./build.sh cc > > CC=arm-linux-gcc > > but it dosen't work ... > > > can anyome help me ?? > > Best regards > > __________________________________________________ > Do You Yahoo!? > En finir avec le spam? Yahoo! Mail vous offre la meilleure > protection possible contre les messages non sollicités > http://mail.yahoo.fr Yahoo! Mail > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > 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] RE : Re: cross compiling boost for ARM
by Hughes, James 09 Jan '07

09 Jan '07

Yes. > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of remi > Sent: 05 January 2007 17:41 > To: boost-users(a)lists.boost.org > Subject: [Boost-users] RE : Re: cross compiling boost for ARM > > > Thank tou for the anwser ! > > So if i want to cross complie boost, i need boost_1_33_1.tar > and boost-jam package ? > > __________________________________________________ > Do You Yahoo!? > En finir avec le spam? Yahoo! Mail vous offre la meilleure > protection possible contre les messages non sollicités > http://mail.yahoo.fr Yahoo! Mail > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > 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] boost::serialization fundamental question about "block read/write"
by Gerd Ritter 09 Jan '07

09 Jan '07

Hi Christian, I have looked at the boost::asio implementation. From what I can see it does use boost::serialization but it wraps each object into it's own archive object inside for every time you call async write (from /example/serialization/connection.hpp): void async_write(const T& t, Handler handler) { // Serialize the data first so we know how large it is. std::ostringstream archive_stream; boost::archive::text_oarchive archive(archive_stream); archive << t; This works fine but has a couple major drawbacks: a) for each object to be sent a new archive is created and destroyed (performance) b) none of the pointer tracking and other boost::serialization features are available and c) especially for small objects this will create serious bandwith "bloat" since each archive contains at least a 27byte header. What I want to achieve is to keep the archive open for the duration of the life time of the connection or logical session which may allow for socket reconnects. I will look into using asio for socket handling though. If I can make it work I'll share the code, maybe it can be included in asio which would be good because I wouldn't have to maintain it ;-) Regards, Gerd > Date: Mon, 8 Jan 2007 15:02:34 -0500 > From: "Christian Henning" <chhenning(a)gmail.com> > Subject: Re: [Boost-users] boost::serialization fundamental question > about "block read/write" > To: boost-users(a)lists.boost.org > Message-ID: > <949801310701081202n5533ba61n41e96dd48945817c(a)mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi Gerd, I'm sure you know that already. But, have you taken a look at > boost::asio? There is even an example for using the serialization lib > when sending objects over a socket. > > Here a link: > http://asio.sourceforge.net/boost_asio_0_3_7/libs/asio/doc/examples/index.h… > > Just scroll down a bit to the Serialization section. > > Christian > > > On 1/8/07, Gerd Ritter <gerd.ritter(a)googlemail.com> wrote: > > > > Hi, > > > > I have a more fundamental question/inquiry about the serialization library.

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Support for extended Daylight Saving Time in 2007
by Eric Yankowitz 09 Jan '07

09 Jan '07

Been trying to find information describing boost's level of support for the four week Daylight Saving Time extension in the US that will occur this March. (http://geography.about.com/cs/daylightsavings/a/dst.htm) I haven't been able to find very much. A lot of software is having issues and was wondering if Boost was ready for the event? Was able to find these links, which suggested issues: http://sourceforge.net/tracker/index.php?func=detail&aid=1471723&group_id=7… http://sourceforge.net/tracker/index.php?func=detail&aid=1478619&group_id=7… Any idea if these are being resolved? And if any others exist? Thanks, Eric Yankowitz

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Need Help with Using Boost 1.33 w/ .Net 2005
by Allen 09 Jan '07

09 Jan '07

Hello, I'm a newbie to boost & am trying to use the "filesystem" library with .Net 2005. I've gotten boost to compile & produce the following libraries for windows vc-8_0 tool set: (@ bottom of email) The problem I'm having is 2 fold: 1. which ones do I use ( I think I know, but...) 2. I am using C:\boost\lib\boost_filesystem-vc80-mt-1_33_1.lib C:\boost\lib\boost_filesystem-vc80-mt-1_33_1.dll 3. I've got the dll in the directory my executable runs from 4. I'm including the library w/in my project But, every time I run my application, it bombs on the following code: std::cerr << "file selection has changed: Fname/Folder:" << std::endl; Glib::ustring gus_fname = m_filechooserbuttonChooseComponentsFile->get_filename(); std::cerr << "file name:=" << gus_fname << std::endl << std::endl; Glib::ustring gus_fname_foler = m_filechooserbuttonChooseComponentsFile->get_current_folder(); std::cerr << "folder:=" << gus_fname_foler << std::endl << std::endl; m_gusFobComponentsFileFullPath = gus_fname; std::cerr << "using paths..." << std::endl; boost::filesystem::path p(m_gusFobComponentsFileFullPath, boost::filesystem::native); (**** BOMB ****) The variable, m_gusFobComponentsFileFullPath, has the value: C:\projects\cramOSG_console\trunk\CRAMComponents.fob For the life of me, I can not figure out why boost is crashing. An older version of boost works just fine w/ this code and I am wondering if I'm using the correct libraries or perhaps what was compiled is not correct. The error give is not a simple one to debug. The application simply crashes @ the point noted when run. Under the debugger, it simply crashes in a "locked" file and since I'm not using the debug version of the libs, I can't walk into the code. Would someone please help me? Thank you so much ahead of time. I appreciate your advice and comments. --Allen C:\boost\lib\boost_date_time-vc80-mt-gd.lib C:\boost\lib\boost_filesystem-vc80-mt-1_33_1.lib C:\boost\lib\boost_filesystem-vc80-mt.lib C:\boost\lib\boost_filesystem-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_filesystem-vc80-mt-gd.lib C:\boost\lib\boost_iostreams-vc80-mt-1_33_1.lib C:\boost\lib\boost_iostreams-vc80-mt.lib C:\boost\lib\boost_iostreams-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_iostreams-vc80-mt-gd.lib C:\boost\lib\boost_program_options-vc80-mt-1_33_1.lib C:\boost\lib\boost_program_options-vc80-mt.lib C:\boost\lib\boost_program_options-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_program_options-vc80-mt-gd.lib C:\boost\lib\boost_regex-vc80-mt-1_33_1.lib C:\boost\lib\boost_regex-vc80-mt.lib C:\boost\lib\boost_regex-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_regex-vc80-mt-gd.lib C:\boost\lib\boost_serialization-vc80-mt-1_33_1.lib C:\boost\lib\boost_serialization-vc80-mt.lib C:\boost\lib\boost_serialization-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_serialization-vc80-mt-gd.lib C:\boost\lib\boost_signals-vc80-mt-1_33_1.lib C:\boost\lib\boost_signals-vc80-mt.lib C:\boost\lib\boost_signals-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_signals-vc80-mt-gd.lib C:\boost\lib\boost_thread-vc80-mt-1_33_1.lib C:\boost\lib\boost_thread-vc80-mt.lib C:\boost\lib\boost_thread-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_thread-vc80-mt-gd.lib C:\boost\lib\boost_wserialization-vc80-mt-1_33_1.lib C:\boost\lib\boost_wserialization-vc80-mt.lib C:\boost\lib\boost_wserialization-vc80-mt-gd-1_33_1.lib C:\boost\lib\boost_wserialization-vc80-mt-gd.lib C:\boost\lib\libboost_date_time-vc80-mt-1_33_1.lib C:\boost\lib\libboost_date_time-vc80-mt.lib C:\boost\lib\libboost_date_time-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_date_time-vc80-mt-gd.lib C:\boost\lib\libboost_date_time-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_date_time-vc80-mt-s.lib C:\boost\lib\libboost_date_time-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_date_time-vc80-mt-sgd.lib C:\boost\lib\libboost_filesystem-vc80-mt-1_33_1.lib C:\boost\lib\libboost_filesystem-vc80-mt.lib C:\boost\lib\libboost_filesystem-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_filesystem-vc80-mt-gd.lib C:\boost\lib\libboost_filesystem-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_filesystem-vc80-mt-s.lib C:\boost\lib\libboost_filesystem-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_filesystem-vc80-mt-sgd.lib C:\boost\lib\libboost_iostreams-vc80-mt-1_33_1.lib C:\boost\lib\libboost_iostreams-vc80-mt.lib C:\boost\lib\libboost_iostreams-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_iostreams-vc80-mt-gd.lib C:\boost\lib\libboost_iostreams-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_iostreams-vc80-mt-s.lib C:\boost\lib\libboost_iostreams-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_iostreams-vc80-mt-sgd.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-1_33_1.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-gd.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-s.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_prg_exec_monitor-vc80-mt-sgd.lib C:\boost\lib\libboost_program_options-vc80-mt-1_33_1.lib C:\boost\lib\libboost_program_options-vc80-mt.lib C:\boost\lib\libboost_program_options-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_program_options-vc80-mt-gd.lib C:\boost\lib\libboost_program_options-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_program_options-vc80-mt-s.lib C:\boost\lib\libboost_program_options-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_program_options-vc80-mt-sgd.lib C:\boost\lib\libboost_regex-vc80-mt-1_33_1.lib C:\boost\lib\libboost_regex-vc80-mt.lib C:\boost\lib\libboost_regex-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_regex-vc80-mt-gd.lib C:\boost\lib\libboost_regex-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_regex-vc80-mt-s.lib C:\boost\lib\libboost_regex-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_regex-vc80-mt-sgd.lib C:\boost\lib\libboost_serialization-vc80-mt-1_33_1.lib C:\boost\lib\libboost_serialization-vc80-mt.lib C:\boost\lib\libboost_serialization-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_serialization-vc80-mt-gd.lib C:\boost\lib\libboost_serialization-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_serialization-vc80-mt-s.lib C:\boost\lib\libboost_serialization-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_serialization-vc80-mt-sgd.lib C:\boost\lib\libboost_signals-vc80-mt-1_33_1.lib C:\boost\lib\libboost_signals-vc80-mt.lib C:\boost\lib\libboost_signals-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_signals-vc80-mt-gd.lib C:\boost\lib\libboost_signals-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_signals-vc80-mt-s.lib C:\boost\lib\libboost_signals-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_signals-vc80-mt-sgd.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-1_33_1.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-gd.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-s.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_test_exec_monitor-vc80-mt-sgd.lib C:\boost\lib\libboost_thread-vc80-mt-1_33_1.lib C:\boost\lib\libboost_thread-vc80-mt.lib C:\boost\lib\libboost_thread-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_thread-vc80-mt-gd.lib C:\boost\lib\libboost_thread-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_thread-vc80-mt-s.lib C:\boost\lib\libboost_thread-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_thread-vc80-mt-sgd.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-1_33_1.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-gd.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-s.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_unit_test_framework-vc80-mt-sgd.lib C:\boost\lib\libboost_wave-vc80-mt-1_33_1.lib C:\boost\lib\libboost_wave-vc80-mt.lib C:\boost\lib\libboost_wave-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_wave-vc80-mt-gd.lib C:\boost\lib\libboost_wave-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_wave-vc80-mt-s.lib C:\boost\lib\libboost_wave-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_wave-vc80-mt-sgd.lib C:\boost\lib\libboost_wserialization-vc80-mt-1_33_1.lib C:\boost\lib\libboost_wserialization-vc80-mt.lib C:\boost\lib\libboost_wserialization-vc80-mt-gd-1_33_1.lib C:\boost\lib\libboost_wserialization-vc80-mt-gd.lib C:\boost\lib\libboost_wserialization-vc80-mt-s-1_33_1.lib C:\boost\lib\libboost_wserialization-vc80-mt-s.lib C:\boost\lib\libboost_wserialization-vc80-mt-sgd-1_33_1.lib C:\boost\lib\libboost_wserialization-vc80-mt-sgd.lib C:\boost\lib\boost_date_time-vc80-mt-1_33_1.dll C:\boost\lib\boost_date_time-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_filesystem-vc80-mt-1_33_1.dll C:\boost\lib\boost_filesystem-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_iostreams-vc80-mt-1_33_1.dll C:\boost\lib\boost_iostreams-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_program_options-vc80-mt-1_33_1.dll C:\boost\lib\boost_program_options-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_regex-vc80-mt-1_33_1.dll C:\boost\lib\boost_regex-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_serialization-vc80-mt-1_33_1.dll C:\boost\lib\boost_serialization-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_signals-vc80-mt-1_33_1.dll C:\boost\lib\boost_signals-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_thread-vc80-mt-1_33_1.dll C:\boost\lib\boost_thread-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_wserialization-vc80-mt-1_33_1.dll C:\boost\lib\boost_wserialization-vc80-mt-gd-1_33_1.dll C:\boost\lib\boost_date_time-vc80-mt-1_33_1.lib C:\boost\lib\boost_date_time-vc80-mt.lib C:\boost\lib\boost_date_time-vc80-mt-gd-1_33_1.lib -- Sincerely, Allen Gene Allen Saucier, Jr Senior Software Engineer CAS, Inc 100 Quality Circle Huntsville, AL 35806 or PO Box 11190 Huntsville, AL 35814 (256) 922-6453 (w) "As for I and my house, we shall follow the Lord" Joshua 25:14

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Re: [Boost-users] [Test] Auto test timeouts?
by Sohail Somani 08 Jan '07

08 Jan '07

> [mailto:boost-users-bounces@lists.boost.org] On Behalf Of > Gennadiy Rozental > > "Sohail Somani" <s.somani(a)fincad.com> wrote in message > news:1C1EBEF8DBACDC439D038EA051674EC7567695@xbox.financialcad.com... > > Good morning/afternoon/evening good people of the Boost lists, > > > > Does anyone know how to set timeouts on the auto testing > suite of the > > Boost unit test framework? I'm guessing that I'll need to > write my own > > test_main() but if anyone knows of a way to tweak the auto > test suite in > > general, that would be very useful! > > There is no interface to specify the timeout for > automatically registered > test case. For this test case you will have to use manual > registration. Thanks! And thanks for a great lib btw.

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boost::serialization fundamental question about "block read/write"
by Gerd Ritter 08 Jan '07

08 Jan '07

Hi, I have a more fundamental question/inquiry about the serialization library. What I want to do is to use the serialization library to send classes over a socket. Even though archives are not supposed to be used at streams I figured that it should be possible to create a oarchive on the sender side, create a iarchive on the receiver side, and use these for multiple, successive write / read operations in block mode. In order to test that assumption I created a test program to see if it would be possible. Here the pseudo code: void sync_streams(stringstream &os, stringstream& os) { // write data from one sting stream to the other // this emulates sending the data on a socket int rd_avail = os.tellp() - os.tellg(); os.read(buffer, rd_avail); is.write(buffer, rd_avail); } stringstream os, is; boost::archive::text_oarchive oa(os); sync_streams(os, is); // sync preamble boost::archive::text_iarchive ia(is); oa << object1; sync_streams(os, is); // sync object block ia >> rdObject1; oa << object2; sync_streams(os, is); // sync object block ia >> rdObject2; While I made this work, I wonder if it is a hack or if this is a valid use case for the serialization library. I looked at the asio projects example/source, there it was done by using a full archive for each object to be transmitted. Sending an archive every time seems a bit expensive too me, since a full preamble is sent everytime and I would loose all the pointer tracking and other great features from the serialization library. Regards, Gerd

3 2

[Test] Auto test timeouts?
by Sohail Somani 08 Jan '07

08 Jan '07

Good morning/afternoon/evening good people of the Boost lists, Does anyone know how to set timeouts on the auto testing suite of the Boost unit test framework? I'm guessing that I'll need to write my own test_main() but if anyone knows of a way to tweak the auto test suite in general, that would be very useful! Thanks, Sohail

2 1

Performance problem in iostreams::stream
by Jerker Öhman 08 Jan '07

08 Jan '07

We use iostreams::stream to read from a legacy file format. The code that reads from the stream looks a little like this: void ReadStuff(std::istream &stream, Stuff &stuff, OtherStuff &otherStuff) { StreamDirectory streamDir; stream >> streamDir; stream.seekg(streamDir.GetOffset(STUFF_TAG)); stream >> stuff; stream.seekg(streamDir.GetOffset(OTHER_STUFF_TAG); stream >> otherStuff; } I.e. the stream contains a directory that holds information about the items following the directory and the offsets to them. The stream and code is also organized so that the calls to seekg in most cases are to the current position of the stream. In other words, seekg doesn’t have to do anything. If the stream is buffered the code runs into serious performance problems. After a while seekg ends up in this function. template<typename T, typename Tr, typename Alloc, typename Mode> typename indirect_streambuf<T, Tr, Alloc, Mode>::pos_type indirect_streambuf<T, Tr, Alloc, Mode>::seek_impl (stream_offset off, BOOST_IOS::seekdir way, BOOST_IOS::openmode which) { if (pptr() != 0) this->BOOST_IOSTREAMS_PUBSYNC(); // sync() confuses VisualAge 6. if (way == BOOST_IOS::cur && gptr()) off -= static_cast<off_type>(egptr() - gptr()); setg(0, 0, 0); setp(0, 0); return obj().seek(off, way, which, next_); } and as far as I can see it just dumps the internal buffer and passes the call on. After still some calls we end up in the stream source seek function. This wouldn’t be so bad if it wasn’t for the fact that the stream source offset isn’t the same as the streams offset since the stream is buffered. Perhaps a little example would clarify this. Assume that we read 4 bytes from a stream with a 10k buffer. The stream will then fill its buffer from the underlying source which means that after the read, the stream will have a full 10k buffer and an offset into the buffer that is 4. The underlying stream source will have an offset pointer that points to 10k+1 bytes into the underlying stream. If we now call seekg to position the file to offset 4 (which already is the current position), the stream throws away it’s buffer and we end up in the stream source who’s file position is 10k+1 so it also throws away it’s internal buffers and seeks back in the underlying stream to offset 4. In this way, what should have been a NULL operation turns into something very time-consuming. Previously we used a class that inherited directly from std::basic_streambuff that contained horrible code that no one really understood so switching to boost::iostreams was a blessing. Unfortunately the boost::iostreams implementation is 10 times slower when it is buffered and 50% slower when it is unbuffered. When reading files that are a couple of GB that really matters. /Jerker

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[BGL] how to extract subgraph from existing graph?
by Ferng, Andrew D 08 Jan '07

08 Jan '07

I've got an overall adjacency_list built and ran connected_componets on it. >From this output, I want to do more analysis on the subgraphs found. Is there a slick way to create a new sub adjacency_list by just giving the subset of vertex IDs? template <class EdgeIterator> adjacency_list(EdgeIterator first, EdgeIterator last, vertices_size_type n, edges_size_type m = 0, const GraphProperty& p = GraphProperty()) This looks like the closest one but it requires redefining the edges? Thanks!

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Re: [Boost-users] operators << and >> on boost serialization
by Pfligersdorffer, Christian 08 Jan '07

08 Jan '07

> Ok! > I'm starting to freaking out, because I just can't figure it out some > compilation errors when trying to use the boost serialization library. > I just can't manage what I'm doing wrong. > Ok, I think that the best way to translate my problem is to post the > code and the changes I'm trying to do: > So ans as you can see on the attached file: > My project and all of my classes are inside a namespace the > FlowEngine. > > I have 3 classes: A; B and C to test the boost serialization. > > As it is now it compiles and runs good. > > But I take the comments of class A to split member serialization, just > doing that I get this errors when compiling: > > \3rdparty\include\boost\serialization\access.hpp(93) : error C2662: > 'void FlowEngine::A::save<Archive>(Archive &,const unsigned int)' : > cannot convert 'this' pointer from 'const FlowEngine::A' to > 'FlowEngine::A &' Hi Miguel! I am guessing: when saving you need a const object, that is your member function save() must be const. I'd check on some missing const and probably also would try to use '&' instead of '<<'. Also: do you use the BOOST_SPLIT_BLABLA-macro? Hope this helps you until some geek gives a thourough statement ;-) DI Christian Pfligersdorffer Software Engineering EOS GmbH

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[Boost.Array] gcc 4.1.2 vs. boost alignment
by Robert Mecklenburg 08 Jan '07

08 Jan '07

I've just upgraded my compiler to gcc 4.1.2 and tried the latest implementation of tr1 included with gcc. I've discovered the gcc array implementation is not what I expect: #include <boost/array.hpp> #include <tr1/array> #include <iostream> int main(int , char **) { boost::array<char, 6> barray; std::cout << sizeof(barray) << std::endl; std::tr1::array<char, 6> tr1array; std::cout << sizeof(tr1array) << std::endl; } When run this code produces: g++ foo.cpp && ./a.out 6 16 That is, the boost array is exactly the size I require 6 bytes, but the tr1 array is larger, 16 bytes. I believe this is due to the following declaration in 4.1.2/tr1/array: // Support for zero-sized arrays mandatory. value_type _M_instance[_Nm ? _Nm : 1] __attribute__((__aligned__)); The boost version is not aligned, but the gcc version is. Does the tr1 implementation require the alignment? If so, it appears that tr1::array is definitely not a suitable wrapper for C-style arrays since they aren't the same size! What's the scoop? Thanks, -- Robert

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[BOOST.TEST] [BOOST.WARN] Output weirdness
by Peter 08 Jan '07

08 Jan '07

Hi, I am new to Boost.Test so not sure if this is expected behaviour or not. Based on this minimal test: |----------------------------8←------------------------------------| #include <boost/test/unit_test.hpp> using boost::unit_test::test_suite; // most frequently you implement test cases as a free functions void my_test() { int i=2; BOOST_WARN( sizeof(int) == sizeof(short) ); BOOST_CHECK( i == 1 ); BOOST_REQUIRE( i > 5 ); BOOST_CHECK( i == 6 ); // will never reach this check } test_suite* init_unit_test_suite( int, char* [] ) { test_suite* test= BOOST_TEST_SUITE( " Test Suite!" ); // this example will pass cause we know ahead of time number of expected failures test->add( BOOST_TEST_CASE( & my_test ), 0 /* expected one error */ ); return test; } |----------------------------8←------------------------------------| Taken from this url: http://tinyurl.com/t54th (Click on BOOST_WARN). I expect to see this output (as mentioned at the above link): c:/development/code/practice/ test/mytest.cpp (14) : warning in test_main: condition sizeof(int) == sizeof(short) is not satisfied c:/development/code/practice/ test/mytest.cpp (15) : error in test_main: test i==1 failed c:/development/code/practice/ test/mytest.cpp (16) : fatal error in test_main: test i>5 failed But I see this output Running 1 test case... c:/development/code/practice/ test/mytest.cpp(15): error in " my_test ": check i == 1 failed c:/development/code/practice/ test/mytest.cpp (16): fatal error in " my_test ": critical check i > 5 failed *** 2 failures detected (2 failures expected) in test suite "Master Test Suite" It seems that the BOOST_WARN is not outputting a message. Is this expected behaviour? Also another minor point in the code I have named the BOOST_TEST_SUITE “Test Suite!” but in the output it is calling it “Master Test Suite”. Is this something I am not setting right? Thanks, Peter.

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Re: [Boost-users] Boost-users Digest, Vol 1140, Issue 1
by Peter 08 Jan '07

08 Jan '07

Hi Rob, Thanks for that answer! I eventually stumbled on this URL: http://tinyurl.com/ylpjtl which helped. Following the example I then did it this way: test->add( BOOST_TEST_CASE( boost::bind( &default_ctor_param, argv, argc ) ), 0); I will have to have a think on which way is the better way. Do you have any views on the Pro's and Con's using BOOST_AUTO_TEST_CASE and manually adding it using the test_suite->add method? Thanks for the help, Peter. > ------------------------------ > > Message: 7 > Date: Sun, 7 Jan 2007 11:08:54 +0000 (UTC) > From: Rob Caldecott <robert.caldecott(a)gmail.com> > Subject: Re: [Boost-users] [Boost.test] [BOOST_AUTO_TEST_CASE] > accessing argc and argv > To: boost-users(a)lists.boost.org > Message-ID: <loom.20070107T120734-337(a)post.gmane.org> > Content-Type: text/plain; charset=us-ascii > > Peter <pjfoley <at> bigpond.com> writes: > > > is it possible to access argc and argv? > > I had the same problem. You can use > boost::unit_test::auto_unit_test_suite()->argc and > boost::unit_test::auto_unit_test_suite()->argv. > > Regards.

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[Boost.test] [BOOST_AUTO_TEST_CASE] accessing argc and argv
by Peter 08 Jan '07

08 Jan '07

Hi, I am trying to learn to use the Boost.Test framework and have read through the online documents explaining how to use Boost.Test. I have been unable to find how to access the argc and argv variables while using BOOST_AUTO_TEST_CASE with "BOOST_AUTO_TEST_MAIN" defined. So my question is using "The automatic registration facility" (http://tinyurl.com/y2en48) is it possible to access argc and argv? If not does that mean I have to define a "boost::unit_test::test_suite* init_unit_test_suite ( int argc, char* argv[] )" and use these variables? Thanks, Peter.

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[labmda & function] strange assembly errors with an unsupported compiler
by Server Levent Yilmaz 07 Jan '07

07 Jan '07

Hi All, This is an anomaly I experienced with Portland Group C++ compiler. Well OK, Boost doesn't support this compiler... But so far for Lambda and Function libraries I was able to run all of the tests in the 1-33-1 distribution with success, and it seems pgCC is doing a real good job. There is this one exception though: pgCC generates assembly errors on this arguably weird code that I have. gcc, msvc and hpCC worked fine... So obviously this seems to be an issue for PG itself and not Boost; but the code under question is really a bit weird and I am not 100% sure if it is correct use of boost or even C++. Before I carry on with bug reports to PG I'd like to ask for your suggestions on it... Here is the code. Briefly, a boost::function is being passed to some function template that expects a functor to apply on its second argument. Another level of indirection is added where the boost::function itself is generated from a lambda expression inside another function. I wasn't able to narrow it down any further.. (highlighted code is here: http://rafb.net/p/28TknK25.html) (compiler error messages follow) // ======================================== #include <boost/function.hpp> #include <boost/lambda/lambda.hpp> #include <boost/lambda/bind.hpp> #include <boost/lambda/casts.hpp> #include <iostream> // Some struct of only double members struct A { double a; double b; }; // The "complicated" function that expect a functor to // operate on an instance of A template< class Func > void foo(const Func& f, const A& a) { std::cout << f(a) << std::endl; } // A function object generator. // It returns a functor which in turn returns some // double member of A accessed via address offset boost::function<double(const A&)> getmem ( const A* obj, const double* mem ) { ptrdiff_t shift = mem - reinterpret_cast<const double*>(obj); using namespace boost::lambda; return *(ll_reinterpret_cast<const double*>(&_1) + constant(shift) ); } // int main() { A obj; obj.a = 1.; obj.b = 2.; // foo( getmem(&obj, &obj.b), obj ); return 0; } // wherever this compiles, it prints out "2". // ========================================== Here is the compiler output: PGCC-W-0155-No va_start() seen (/opt/pgi/6.1.4/linux86-64/6.1/include/CC/iostream: 689) PGCC/x86 Linux/x86-64 6.1-4: compilation completed with warnings /tmp/pgCCbaaaasxqap.s: Assembler messages: /tmp/pgCCbaaaasxqap.s:2499: Error: junk `(%rbx)' after expression /tmp/pgCCbaaaasxqap.s:2500: Error: junk `(%rbx)' after expression The assembly lines under question is pasted here: http://rafb.net/p/LW5IX765.html -- lines 7 and 8. The va_start() warning is probably irrelevant (this is not the only place I have seen it, and never failed before with these warnings) any guidance will be appreciated, thanks -- Server Levent Yilmaz Mechanical Engineering @ PITT

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