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help needed with bzip2/zlib with boost
by ChristinaDRS 11 Sep '09

11 Sep '09

Hello, I am trying to get the code below to compile in Visual Studios without luck. I downloaded and built the seperate zlib and bzip2 libraries and renamed them to: libboost_zlib-vc90-mt-gd-1_39.lib libboost_bzip2-vc90-mt-gd-1_39.lib because I was getting linking errors that I was missing thes elibs. but I get a bunch of unresolved linking errors now.. any idea what I might be doing wrong? I am guessing they must be needed to be built actually by boost? Is there any instructions on how to do this? Thanks!!! 1>------ Build started: Project: BoostCompression, Configuration: Debug Win32 ------ 1>Linking... 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::default_compression" (?default_compression@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::deflated" (?deflated@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::default_strategy" (?default_strategy@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2019: unresolved external symbol "int __cdecl test_main(int,char * * const)" (?test_main@@YAHHQAPAD@Z) referenced in function "public: int __thiscall boost::minimal_test::caller::operator()(void)" (??Rcaller@minimal_test@boost@@QAEHXZ) 1>main.obj : error LNK2019: unresolved external symbol "protected: __thiscall boost::iostreams::detail::bzip2_base::~bzip2_base(void)" (??1bzip2_base@detail@iostreams@boost@@IAE@XZ) referenced in function "public: __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::~bzip2_compressor_impl<class std::allocator<char> >(void)" (??1?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@XZ) 1>main.obj : error LNK2019: unresolved external symbol "protected: __thiscall boost::iostreams::detail::zlib_base::~zlib_base(void)" (??1zlib_base@detail@iostreams@boost@@IAE@XZ) referenced in function __unwindfunclet$??0?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@ABUzlib_params@23@@Z$0 1>main.obj : error LNK2019: unresolved external symbol "protected: __thiscall boost::iostreams::detail::zlib_base::zlib_base(void)" (??0zlib_base@detail@iostreams@boost@@IAE@XZ) referenced in function "public: __thiscall boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::zlib_compressor_impl<class std::allocator<char> >(struct boost::iostreams::zlib_params const &)" (??0?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@ABUzlib_params@23@@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: void __thiscall boost::iostreams::detail::zlib_base::reset(bool,bool)" (?reset@zlib_base@detail@iostreams@boost@@IAEX_N0@Z) referenced in function "public: __thiscall boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::~zlib_compressor_impl<class std::allocator<char> >(void)" (??1?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@XZ) 1>main.obj : error LNK2019: unresolved external symbol "protected: __thiscall boost::iostreams::detail::bzip2_base::bzip2_base(struct boost::iostreams::bzip2_params const &)" (??0bzip2_base@detail@iostreams@boost@@IAE@ABUbzip2_params@23@@Z) referenced in function "public: __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::bzip2_compressor_impl<class std::allocator<char> >(struct boost::iostreams::bzip2_params const &)" (??0?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@ABUbzip2_params@23@@Z) 1>main.obj : error LNK2019: unresolved external symbol "private: void __thiscall boost::iostreams::detail::zlib_base::do_init(struct boost::iostreams::zlib_params const &,bool,void * (__cdecl*)(void *,unsigned int,unsigned int),void (__cdecl*)(void *,void *),void *)" (?do_init@zlib_base@detail@iostreams@boost@@AAEXABUzlib_params@34@_NP6APAXPAXII@ZP6AX22@Z2@Z) referenced in function "protected: void __thiscall boost::iostreams::detail::zlib_base::init<class std::allocator<char> >(struct boost::iostreams::zlib_params const &,bool,struct boost::iostreams::detail::zlib_allocator<class std::allocator<char>,class std::allocator<char> > &)" (??$init@V?$allocator@D@std@@@zlib_base@detail@iostreams@boost@@IAEXABUzlib_params@23@_NAAU?$zlib_allocator@V?$allocator@D@std@@V12@@123@@Z) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::stream_end" (?stream_end@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2019: unresolved external symbol "public: static void __cdecl boost::iostreams::zlib_error::check(int)" (?check@zlib_error@iostreams@boost@@SAXH@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: void __thiscall boost::iostreams::detail::zlib_base::after(char const * &,char * &,bool)" (?after@zlib_base@detail@iostreams@boost@@IAEXAAPBDAAPAD_N@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: int __thiscall boost::iostreams::detail::zlib_base::deflate(int)" (?deflate@zlib_base@detail@iostreams@boost@@IAEHH@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::no_flush" (?no_flush@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::finish" (?finish@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2019: unresolved external symbol "protected: void __thiscall boost::iostreams::detail::zlib_base::before(char const * &,char const *,char * &,char *)" (?before@zlib_base@detail@iostreams@boost@@IAEXAAPBDPBDAAPADPAD@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::zlib_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::bzip2::stream_end" (?stream_end@bzip2@iostreams@boost@@3HB) 1>main.obj : error LNK2019: unresolved external symbol "public: static void __cdecl boost::iostreams::bzip2_error::check(int)" (?check@bzip2_error@iostreams@boost@@SAXH@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: void __thiscall boost::iostreams::detail::bzip2_base::after(char const * &,char * &)" (?after@bzip2_base@detail@iostreams@boost@@IAEXAAPBDAAPAD@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: int __thiscall boost::iostreams::detail::bzip2_base::compress(int)" (?compress@bzip2_base@detail@iostreams@boost@@IAEHH@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::bzip2::run" (?run@bzip2@iostreams@boost@@3HB) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::bzip2::finish" (?finish@bzip2@iostreams@boost@@3HB) 1>main.obj : error LNK2019: unresolved external symbol "protected: void __thiscall boost::iostreams::detail::bzip2_base::before(char const * &,char const *,char * &,char *)" (?before@bzip2_base@detail@iostreams@boost@@IAEXAAPBDPBDAAPADPAD@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: int __thiscall boost::iostreams::detail::zlib_base::inflate(int)" (?inflate@zlib_base@detail@iostreams@boost@@IAEHH@Z) referenced in function "public: bool __thiscall boost::iostreams::detail::zlib_decompressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$zlib_decompressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2001: unresolved external symbol "int const boost::iostreams::zlib::sync_flush" (?sync_flush@zlib@iostreams@boost@@3HB) 1>main.obj : error LNK2019: unresolved external symbol "protected: int __thiscall boost::iostreams::detail::bzip2_base::decompress(void)" (?decompress@bzip2_base@detail@iostreams@boost@@IAEHXZ) referenced in function "public: bool __thiscall boost::iostreams::detail::bzip2_decompressor_impl<class std::allocator<char> >::filter(char const * &,char const *,char * &,char *,bool)" (?filter@?$bzip2_decompressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 1>main.obj : error LNK2019: unresolved external symbol "protected: void __thiscall boost::iostreams::detail::bzip2_base::end(bool)" (?end@bzip2_base@detail@iostreams@boost@@IAEX_N@Z) referenced in function "public: void __thiscall boost::iostreams::detail::bzip2_compressor_impl<class std::allocator<char> >::close(void)" (?close@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAEXXZ) 1>main.obj : error LNK2019: unresolved external symbol "private: void __thiscall boost::iostreams::detail::bzip2_base::do_init(bool,void * (__cdecl*)(void *,int,int),void (__cdecl*)(void *,void *),void *)" (?do_init@bzip2_base@detail@iostreams@boost@@AAEX_NP6APAXPAXHH@ZP6AX11@Z1@Z) referenced in function "protected: void __thiscall boost::iostreams::detail::bzip2_base::init<class std::allocator<char> >(bool,struct boost::iostreams::detail::bzip2_allocator<class std::allocator<char>,class std::allocator<char> > &)" (??$init@V?$allocator@D@std@@@bzip2_base@detail@iostreams@boost@@IAEX_NAAU?$bzip2_allocator@V?$allocator@D@std@@V12@@123@@Z) 1>D:\Debug\BoostCompression.exe : fatal error LNK1120: 29 unresolved externals [main.cpp] -------------------------------------------------------------------------------- #include <iostream> #include <sstream> #include <boost/assign/list_of.hpp> #include <boost/date_time/posix_time/posix_time.hpp> #include <boost/foreach.hpp> #include <boost/format.hpp> #include <boost/lexical_cast.hpp> #include <boost/numeric/conversion/cast.hpp> #include <boost/test/minimal.hpp> #include <boost/iostreams/copy.hpp> #include <boost/iostreams/device/back_inserter.hpp> #include <boost/iostreams/filter/bzip2.hpp> #include <boost/iostreams/filter/zlib.hpp> #include <boost/iostreams/filtering_stream.hpp> enum CompressionScheme { NO_COMPRESSION, ZLIB_COMPRESSION, BZIP2_COMPRESSION }; typedef boost::posix_time::ptime TimeType; //---------------------------------------------------------------------------- void add_compressor ( boost::iostreams::filtering_streambuf<boost::iostreams::output>& out, CompressionScheme scheme ) { switch (scheme) { case ZLIB_COMPRESSION: { out.push(boost::iostreams::zlib_compressor()); break; } case BZIP2_COMPRESSION: { out.push(boost::iostreams::bzip2_compressor()); break; } default: { break; } } } //---------------------------------------------------------------------------- void add_decompressor ( boost::iostreams::filtering_streambuf<boost::iostreams::input>& in, CompressionScheme scheme ) { switch (scheme) { case ZLIB_COMPRESSION: { in.push(boost::iostreams::zlib_decompressor()); break; } case BZIP2_COMPRESSION: { in.push(boost::iostreams::bzip2_decompressor()); break; } default: { break; } } } //---------------------------------------------------------------------------- std::string compress ( const std::string& data ) { std::stringstream compressed; std::stringstream decompressed; decompressed << data; boost::iostreams::filtering_streambuf<boost::iostreams::input> out; out.push(boost::iostreams::zlib_compressor()); out.push(decompressed); boost::iostreams::copy(out, compressed); return compressed.str(); } //---------------------------------------------------------------------------- std::string compress1 ( const std::string& data, CompressionScheme scheme ) { std::string compressed; boost::iostreams::filtering_streambuf<boost::iostreams::output> out; add_compressor(out, scheme); out.push(boost::iostreams::back_inserter(compressed)); boost::iostreams::copy(boost::make_iterator_range(data), out); return compressed; } //---------------------------------------------------------------------------- void compress2 ( const std::string& data, std::string& buffer, CompressionScheme scheme ) { buffer.clear(); boost::iostreams::filtering_streambuf<boost::iostreams::output> out; add_compressor(out, scheme); out.push(boost::iostreams::back_inserter(buffer)); boost::iostreams::copy(boost::make_iterator_range(data), out); } //---------------------------------------------------------------------------- std::string decompress ( const std::string& data ) { std::stringstream compressed; std::stringstream decompressed; compressed << data; boost::iostreams::filtering_streambuf<boost::iostreams::input> in; in.push(boost::iostreams::zlib_decompressor()); in.push(compressed); boost::iostreams::copy(in, decompressed); return decompressed.str(); } //---------------------------------------------------------------------------- std::string decompress1 ( const std::string& data, CompressionScheme scheme ) { boost::iostreams::filtering_streambuf<boost::iostreams::input> in; add_decompressor(in, scheme); in.push(boost::make_iterator_range(data)); std::string decompressed; boost::iostreams::copy(in, boost::iostreams::back_inserter(decompressed)); return decompressed; } //---------------------------------------------------------------------------- void decompress2 ( const std::string& buffer, std::string& data, CompressionScheme scheme ) { boost::iostreams::filtering_streambuf<boost::iostreams::input> in; add_decompressor(in, scheme); in.push(boost::make_iterator_range(buffer)); data.clear(); boost::iostreams::copy(in, boost::iostreams::back_inserter(data)); } //---------------------------------------------------------------------------- TimeType current_time ( ) { return boost::posix_time::microsec_clock::local_time(); } //---------------------------------------------------------------------------- double elapsed_seconds ( const TimeType& start_time ) { static const double MSEC_PER_SEC = 1000.0; TimeType end_time = current_time(); boost::posix_time::time_duration elapsed = end_time - start_time; return boost::numeric_cast<double>(elapsed.total_milliseconds()) / MSEC_PER_SEC; } //---------------------------------------------------------------------------- int test_main ( int /*argc*/, char* /*argv*/[] ) { const int NUM_ITERATIONS = 10000; const std::string send_data = "boo! how are you?"; const std::string base_statement = "ALGO %|1$-3s|: %2% cycles took %|3$0.3f| seconds"; double t0; // Try original algorithm { const std::string time_statement = base_statement + " (Original)\n"; TimeType start_time = current_time(); std::string received_data; for (int i = 0; i < NUM_ITERATIONS; ++i) { const std::string buffer = compress(send_data); received_data = decompress(buffer); } BOOST_CHECK(send_data == received_data); t0 = elapsed_seconds(start_time); std::cout << (boost::format(time_statement) % 0 % NUM_ITERATIONS % t0); } const std::string improvement_statement = base_statement + " (Improvement %|4$5.2f| %%)\n"; typedef std::vector<CompressionScheme> SchemeVectorType; const SchemeVectorType schemes = boost::assign::list_of(NO_COMPRESSION)(ZLIB_COMPRESSION)(BZIP2_COMPRESSION); // Try new algorithm 1 BOOST_FOREACH(CompressionScheme scheme, schemes) { TimeType start_time = current_time(); std::string received_data; for (int i = 0; i < NUM_ITERATIONS; ++i) { const std::string buffer = compress1(send_data, scheme); received_data = decompress1(buffer, scheme); } BOOST_CHECK(send_data == received_data); const std::string algo = std::string("1,") + boost::lexical_cast<std::string>(scheme); const double e = elapsed_seconds(start_time); const double improvement = ((t0 - e) / t0) * 100.0; std::cout << (boost::format(improvement_statement) % algo % NUM_ITERATIONS % e % improvement); } // Try new algorithm 2 BOOST_FOREACH(CompressionScheme scheme, schemes) { TimeType start_time = current_time(); std::string received_data; for (int i = 0; i < NUM_ITERATIONS; ++i) { std::string buffer; compress2(send_data, buffer, scheme); decompress2(buffer, received_data, scheme); } BOOST_CHECK(send_data == received_data); const std::string algo = std::string("2,") + boost::lexical_cast<std::string>(scheme); const double e = elapsed_seconds(start_time); const double improvement = ((t0 - e) / t0) * 100.0; std::cout << (boost::format(improvement_statement) % algo % NUM_ITERATIONS % e % improvement); } return 0; } -- View this message in context: http://www.nabble.com/help-needed-with-bzip2-zlib-with-boost-tp25401084p254… Sent from the Boost - Users mailing list archive at Nabble.com.

2 1

timeconv.inl
by Dan Smithers 11 Sep '09

11 Sep '09

I am porting some inherited code to MSVS 2008 This is also bringing along an upgrade from boost 1.32 to a newer version (probably 1.37). I have found a thread wrapper class in the code that uses time_to directly. This is defined in lib/thread/src/timeconv.inl and doesn't look like its meant to be used directly. The original code base has timeconv.inl in the boost include directory. Was timeconv.inl moved at some point in the past? Is this as bad as I think it is? thanks dan

3 3

Heterogeneous Bundled Properties (boost::detail::error_property_not_found)
by Mathieu Malaterre 11 Sep '09

11 Sep '09

Hi there, I am reading the following documentation: http://www.boost.org/doc/libs/1_40_0/libs/graph/doc/bundles.html I found the following test: libs/graph/test/bundled_properties.cpp, but I still do not understand how I can define a graph with heterogeneous vertex type. Could someone please let me know how to do that ? I tried the following two approaches: typedef adjacency_list < listS, vecS, directedS, boost::any >graph_type; and struct Fruit { virtual ~Fruit() {} }; typedef adjacency_list < listS, vecS, directedS, Fruit* >graph_type; But I when retrieving the vertex I always get a boost::detail::error_property_not_found Thanks -- Mathieu

1 0

Incorrect graph cut?
by David Doria 11 Sep '09

11 Sep '09

I made this simple graph: http://rpi.edu/~doriad/graph.png <http://rpi.edu/%7Edoriad/graph.png> The min cut between node 0 and node 3 should be 11, right? But it is returning 7. My code is below: #include <iostream> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/kolmogorov_max_flow.hpp> using namespace boost; typedef adjacency_list_traits < vecS, vecS, directedS > Traits; typedef adjacency_list < vecS, vecS, directedS, property < vertex_name_t, std::string, property < vertex_index_t, long, property < vertex_color_t, boost::default_color_type, property < vertex_distance_t, long, property < vertex_predecessor_t, Traits::edge_descriptor > > > > >, property < edge_capacity_t, double, property < edge_residual_capacity_t, double, property < edge_reverse_t, Traits::edge_descriptor > > > > Graph; Traits::edge_descriptor AddEdge(Traits::vertex_descriptor &v1, Traits::vertex_descriptor &v2, property_map < Graph, edge_reverse_t >::type &rev, const double capacity, Graph &g); int main(int, char*[]) { Graph g; //a graph with 0 vertices property_map < Graph, edge_reverse_t >::type rev = get(edge_reverse, g); //add a source and sink node, and store them in s and t, respectively Traits::vertex_descriptor v0 = add_vertex(g); Traits::vertex_descriptor v1 = add_vertex(g); Traits::vertex_descriptor v2 = add_vertex(g); Traits::vertex_descriptor v3 = add_vertex(g); AddEdge(v0, v1, rev, 6.0, g); AddEdge(v0, v2, rev, 5.0, g); AddEdge(v1, v2, rev, 8.0, g); AddEdge(v2, v3, rev, 7.0, g); //find min cut double flow = kolmogorov_max_flow(g, v0, v3); // a list of sources will be returned in s, and a list of sinks will be returned in t std::cout << "Max flow is: " << flow << std::endl; property_map<Graph, edge_capacity_t>::type capacity = get(edge_capacity, g); property_map<Graph, edge_residual_capacity_t>::type residual_capacity = get(edge_residual_capacity, g); graph_traits<Graph>::vertex_iterator u_iter, u_end; graph_traits<Graph>::out_edge_iterator ei, e_end; for (tie(u_iter, u_end) = vertices(g); u_iter != u_end; ++u_iter) for (tie(ei, e_end) = out_edges(*u_iter, g); ei != e_end; ++ei) if (capacity[*ei] > 0) std::cout << "Source: " << *u_iter << " destination: " << target(*ei, g) << " capacity: " << capacity[*ei] << "residual cap: " << residual_capacity[*ei] << " diff: " << (capacity[*ei] - residual_capacity[*ei]) << std::endl; return 0; } Traits::edge_descriptor AddEdge(Traits::vertex_descriptor &v1, Traits::vertex_descriptor &v2, property_map < Graph, edge_reverse_t >::type &rev, const double capacity, Graph &g) { Traits::edge_descriptor e1 = add_edge(v1, v2, g).first; Traits::edge_descriptor e2 = add_edge(v2, v1, g).first; put(edge_capacity, g, e1, capacity); put(edge_capacity, g, e2, capacity); rev[e1] = e2; rev[e2] = e1; } The output is: Max flow is: 7 Source: 0 destination: 1 capacity: 6residual cap: 4 diff: 2 Source: 0 destination: 2 capacity: 5residual cap: 0 diff: 5 Source: 1 destination: 0 capacity: 6residual cap: 8 diff: -2 Source: 1 destination: 2 capacity: 8residual cap: 6 diff: 2 Source: 2 destination: 0 capacity: 5residual cap: 5 diff: 0 Source: 2 destination: 1 capacity: 8residual cap: 10 diff: -2 Source: 2 destination: 3 capacity: 7residual cap: 0 diff: 7 Source: 3 destination: 2 capacity: 7residual cap: 9 diff: -2 Here are my questions: 1) Why is the max flow wrong? 2) I'm confused what that output is showing - for example, there is a Source 1 Destination 2 edge that is not a real edge. It is also missing the edge from node 3 to node 1. 3) What is the best way to determine which nodes are on the source side of the cut, and which are on the sink side? The goal is to partition the graph into two sets. 4) Is it possible to pass a list of sources and a list of sinks to kolmogorov_max_flow instead of just a single source node and a single sink node? (Or can a different boost maxflow algorithm handle that?) These are just additional constraints on where the cut should be allowed to be placed. Maybe this is not the type of thing BGL is intended for? If it is, I really think the answers to these questions should be added to the documentation! Thanks, David

1 1

[boost.task] local_rr_ums.hpp missing
by Tan, Tom (Shanghai) 11 Sep '09

11 Sep '09

This header file is referenced while using static_pool. But it seems to be missing in either boost trunk or vault. Where can I get the latest version? Thanks.

1 0

boost thread on x64
by Pascal Kesseli 11 Sep '09

11 Sep '09

Hi friends Using the freshly created MinGW 64bit build, creating the boost 1.40 libraries with bjam worked flawlessly. However, when including boost/thread.hpp, I receive the following error: In file included from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/basic_timed_mutex.hpp:14, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/mutex.hpp:8, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/mutex.hpp:14, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/detail/thread.hpp:11, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/thread.hpp:22, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread.hpp:13, from ../src/main/com/emc/schedule/DailyRepetitiveTaskComposite.cpp:2: C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/interlocked_read.hpp: In function 'void boost::detail::interlocked_write_release(void* volatile*, void*)': C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/interlocked_read.hpp:71: error: cast from 'void*' to 'long int' loses precision In file included from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/mutex.hpp:8, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/mutex.hpp:14, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/detail/thread.hpp:11, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread/thread.hpp:22, from C:\Program Files\C++\boost\boost_1_40_0/boost/thread.hpp:13, from ../src/main/com/emc/schedule/DailyRepetitiveTaskComposite.cpp:2: C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/basic_timed_mutex.hpp: In member function 'void* boost::detail::basic_timed_mutex::get_event()': C:\Program Files\C++\boost\boost_1_40_0/boost/thread/win32/basic_timed_mutex.hpp:152: error: cast from 'void*' to 'long int' loses precision make: *** [src/main/com/emc/schedule/DailyRepetitiveTaskComposite.o] Error 1 However, on the stated line, I can't even make out a cast. Is boost_thread win64 compatible? g++ version: g++.exe (GCC) 4.4.1 20090505 (prerelease) Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Thanks for any help and best regards Pascal

2 1

Re: [Boost-users] RE : [lambda] for thread bind
by Boost lzw 10 Sep '09

10 Sep '09

Thanks. bind(&test_thread, s) works. How can I bind one boost::thread to another boost::thread? Here is what I want to do: void work_thread() { cout << "done" << endl; } void test_thread(boost::thread& t) { while (t.joinable()) { // do sth. this_thread::sleep(seconds(2)); } } int main() { boost::thread work_thread(work_thread); // this line does not compile boost::thread inquiry_thread(bind(&test_thread, work_thread ) ); work_thread.join(); inquiry_thread.join(); return 0; } Thanks in advance. Robert On Thu, Sep 10, 2009 at 4:24 PM, Eric MALENFANT < Eric.Malenfant(a)sagem-interstar.com> wrote: > Boost lzw wrote: > [snip] > > but the lambda version does not compile. Why? Thanks. > > ------------------------------------- > > > void test_thread(std::string s) > > { > > cout << "string is" << s << endl; > > } > > > > std::string s("I am a string"); > > boost::thread inquiry_thread(bind(test_thread, _1)(s) ); > > > > bind(test_thread, _1) creates a functor expecting one argument. Appending > "(s)" right after invokes that functor, passing it s as an argument. > > What you want is: bind(&test_thread, s) > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

2 1

[lambda] for thread bind
by Boost lzw 10 Sep '09

10 Sep '09

Hi there, I am playing with lambda. This following code works: ------------------------------------- void test_thread(std::string s) { cout << "string is" << s << endl; } boost::thread enquiry_thread(test_thread, s ); ------------------------------------- but the lambda version does not compile. Why? Thanks. ------------------------------------- #include"boost/lambda/lambda.hpp" #include"boost/lambda/bind.hpp" using namespace boost::lambda; void test_thread(std::string s) { cout << "string is" << s << endl; } std::string s("I am a string"); boost::thread inquiry_thread(bind(test_thread, _1)(s) );

2 1

Status of Boost.Extension from sandbox?
by Rex Kerr 10 Sep '09

10 Sep '09

I'm evaluating various plugin solutions for a project and am considering boost.extension as one of the alternatives. Looking at http://boost-extension.blogspot.com/ and the mailing list archives it appears that the project hasn't been active for a while. I have tried, unsuccessfully, to find a page detailing the current status of sandbox projects to determine whether or not it has been accepted for inclusion in future boost versions, has significant flaws preventing its inclusion, etc. I'm hesitant to choose a project that may be orphaned. Any guidance in finding such status updates, or outright answers to my questions, would be helpful. Thank you, -Rex

4 6

[thread]
by Alexander Heinrich 10 Sep '09

10 Sep '09

I want to determine if a given thread is still running or has already completed. I thought the joinable() method would provide this information, but unfortunately it seems that a thread does not automatically become Not-A-Thread after completion. I wrote a small app to verify this: <code> #include <iostream> using namespace std; #include <boost/thread.hpp> #include <boost/thread/mutex.hpp> #include <boost/date_time/posix_time/posix_time_types.hpp> using namespace boost; using namespace boost::posix_time; mutex ioMutex; void f() { mutex::scoped_lock lock(ioMutex); cout << "done" << endl; } int main(int argc, char** argv) { boost::thread t(f); while (t.joinable()) { { mutex::scoped_lock lock(ioMutex); cout << "not yet done" << endl; } this_thread::sleep(seconds(2)); } return 0; } </code> Output: not yet done done not yet done not yet done ... So what should I do instead if I want to know if a thread is still running? Best regards, Alexander Heinrich

2 1

transform_iterator requirement on the Iterator?
by Hicham Mouline 10 Sep '09

10 Sep '09

Hi, >From the docs, I don't see the Iterator argument is required to be default-constructible. I have a gcc4.3.3 error stack that looks like: /usr/include/boost-1_37/boost/iterator/iterator_adaptor.hpp: In constructor 'boost::iterator_adaptor<Derived, Base, Value, Traversal, Reference, Difference>::iterator_adaptor() [with Derived = boost::transform_iterator<Math::Curve1D<MathTest::Curve1D::CurveSVOTrait>::G etXIter, Math::CurveContainerIter<std::pair<double, double>, 4u, true>, boost::use_default, boost::use_default>, Base = Math::CurveContainerIter<std::pair<double, double>, 4u, true>, Value = const double, Traversal = boost::use_default, Reference = const double&, Difference = boost::use_default]': /usr/include/boost-1_37/boost/iterator/transform_iterator.hpp:100: instantiated from 'boost::transform_iterator<UnaryFunction, Iterator, Reference, Value>::transform_iterator() [with UnaryFunc = Math::Curve1D<MathTest::Curve1D::CurveSVOTrait>::GetXIter, Iterator = Math::CurveContainerIter<std::pair<double, double>, 4u, true>, Reference = boost::use_default, Value = boost::use_default]' /usr/lib/gcc/x86_64-redhat-linux/4.3.3/../../../../include/c++/4.3.3/bits/st l_algo.h:2086: instantiated from '_FIter std::lower_bound(_FIter, _FIter, const _Tp&) [with _FIter = boost::transform_iterator<Math::Curve1D<MathTest::Curve1D::CurveSVOTrait>::G etXIter, Math::CurveContainerIter<std::pair<double, double>, 4u, true>, boost::use_default, boost::use_default>, _Tp = double]' _____ math/interExtrapolators/interExtrapolate.hpp:75: instantiated from 'typename std::iterator_traits<fIterType>::value_type Math::InterExtrapolators::InterExtrapolate(xIterType, xIterType, fIterType, typename std::iterator_traits<_OI>::value_type, typename boost::call_traits<T>::param_type, typename boost::call_traits<Extrap>::param_type) [with Interp = Math::InterExtrapolators::StairCase1D, Extrap = Math::InterExtrapolators::StairCase1D, xIterType = boost::transform_iterator<Math::Curve1D<MathTest::Curve1D::CurveSVOTrait>::G etXIter, Math::CurveContainerIter<std::pair<double, double>, 4u, true>, boost::use_default, boost::use_default>, fIterType = boost::transform_iterator<Math::Curve1D<MathTest::Curve1D::CurveSVOTrait>::G etFIter, Math::CurveContainerIter<std::pair<double, double>, 4u, true>, boost::use_default, boost::use_default>]' ... mathTest/curve1D.cpp:72: instantiated from here /usr/include/boost-1_37/boost/iterator/iterator_adaptor.hpp:279: error: no matching function for call to 'Math::CurveContainerIter<std::pair<double, double>, 4u, true>::CurveContainerIter()' where it seems the compiler is looking for CurveContainerIter() with no arguments. but such constructor does not exist because the iterator has a member reference to the container. Or is this a requirement of std::lower_bound? Basically, the last line of the stack that is my code is xIterType xiter = std::lower_bound( xbegin, xend, x ); where xIterType is typedef boost::transform_iterator<GetXIter,ContainerConstIterType> xIterType; GetXIter is a unary function object, and ContainerConstIterType is CurveContainerIter<..., true> , true being for const'ness of the iterator. Xbegin, xend and x all of xIterType Regards,

2 3

[ptr_container] Transferring the Last Element from a ptr_vector
by Charles Brockman 10 Sep '09

10 Sep '09

I have two functions which swap elements between ptr_vectors. The first compiles and apparently works correctly. typedef boost::ptr_vector<Gene> GeneVectType; GeneVectType geneVect; void Gene::swapGene(Gene* other) { geneVect.transfer(geneVect.end(), other->geneVect.begin(), other->geneVect); other->geneVect.transfer(other->geneVect.end(), geneVect.begin(), geneVect); } Occasionally I must reverse the swap with this unswap function. void Gene::unswapGene(Gene* other) { // The line below is line 560 referred to in the error message. geneVect.transfer(geneVect.begin(), other->geneVect.rbegin(), other->geneVect); other->geneVect.transfer(other->geneVect.begin(), geneVect.rbegin(), geneVect); } This function should take the last element from each container and transfer it to the beginning of the other container. The unswapGene function will not compile. Here's the compiler message. C:\Boost SVN\trunk\boost/range/const_iterator.hpp(37) : error C2039: 'const_iterator' : is not a member of 'boost::reverse_iterator<Iterator>' with [Iterator=boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>] C:\Boost SVN\trunk\boost/mpl/eval_if.hpp(63) : see reference to class template instantiation 'boost::range_const_iterator<C>' being compiled with [C=boost::reverse_iterator<boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>>] C:\Boost SVN\trunk\boost/range/iterator.hpp(63) : see reference to class template instantiation 'boost::mpl::eval_if_c<C,F1,F2>' being compiled with [C=true, F1=boost::range_const_iterator<boost::reverse_iterator<boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>>>, F2=boost::range_mutable_iterator<const boost::reverse_iterator<boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>>>] C:\Boost SVN\trunk\boost/ptr_container/ptr_sequence_adapter.hpp(458) : see reference to class template instantiation 'boost::range_iterator<C>' being compiled with [C=const boost::reverse_iterator<boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>>] ..\..\..\..\GSSTA\gene.cpp(560) : see reference to function template instantiation 'void boost::ptr_sequence_adapter<T,VoidPtrSeq,CloneAllocator>::transfer<genprg::Gene::GeneVectType,boost::reverse_iterator<Iterator>>(boost::void_ptr_iterator<VoidIter,T>,const Range &,PtrSeqAdapter &)' being compiled with [T=genprg::Gene, VoidPtrSeq=std::vector<void *,std::allocator<void *>>, CloneAllocator=boost::heap_clone_allocator, Iterator=boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>, VoidIter=std::_Vector_iterator<void *,std::allocator<void *>>, Range=boost::reverse_iterator<boost::void_ptr_iterator<std::_Vector_iterator<void *,std::allocator<void *>>,genprg::Gene>>, PtrSeqAdapter=genprg::Gene::GeneVectType] Can anyone see what I'm doing wrong? -- Charles

6 11

[boost::multi_array] Is there simple method to delete certain row / column?
by Vladimir Petorov 10 Sep '09

10 Sep '09

Hello! I got two-dimensional array class based on boost::multi_array class. I need to delete some certain column or row of it. How to delete it with keeping the data? For example I have 2D array 6x6, and i need to delete 3th row and 4th column with keeping data from other rows and columns. Is it simple method (multi_array class function or some smart method) or should i create new array 5x5 and copy data in it except 3th row and 4th column? Thanks!

1 0

[BGL] DistanceMatrix type for johnson_all_pairs_shortest_paths
by Ralf Goertz 10 Sep '09

10 Sep '09

Hi, I spent a lot of time to figure out what the problem was. But the reason why there is a problem is still not clear. I modified the johnson_all_pairs_shortest_paths example program to allow for non-constant graphs. The example prog contained std::vector < int >d(V, (std::numeric_limits < int >::max)()); int D[V][V]; johnson_all_pairs_shortest_paths(g, D, distance_map(&d[0])); with V being const int whose value is known at compile time. In my program this is obviously not the case, therefore I defined const int V(num_vertices(g)); std::vector < int >d(V, (std::numeric_limits < int >::max)()); int D[V][V]; johnson_all_pairs_shortest_paths(g, D, distance_map(&d[0])); But this didn't compile, I got the error error: no matching function for call to ‘johnson_all_pairs_shortest_paths(Graph&, int [(long int)V][(long int)V], boost::bgl_named_params<int*, boost::vertex_distance_t, boost::no_property>)’ However, it is possible to access elements of D as D[i][j], even if V isn't known at compile time. This is (according to what I read at http://www.boost.org/doc/libs/1_39_0/libs/graph/doc/BasicMatrix.html ) the only constrained for D. Substituting int D[V][V] with vector<vector<int> > D(V,vector<int>(V)) solves the problem, but still why is there a problem in the first place? Ralf

3 3

Solaris Container
by Bernhard Duebi 10 Sep '09

10 Sep '09

Hello, I'm not a programmer, I'm only a system engineer, so please be gentle. One of our code producers compiled boost in a Solaris Zone/Container using SUN Studio. For testing he used a program called test. I guess it is part of the distribution. It tests if 2+2==4 with different calls to boost. The test program runs on real machines, but not in Containers. Looking at the output of truss I found a probable cause. The program climbs up the process tree using the proc filesystem until it reaches the root of the tree. In a real machine the init process has PID 1 and this seems the sign for the program to stop climbing. In a Container the zsched process has a random PID and its PPID is the same as the PID. This leads to an endless loop. In the test.cpp file there is not much code besides the add function and some calls to the boost library. So, I guess the process tree walk is done somewhere in the boost library. My fellow co-worker denies this strictly. As we both have no clue about boost, I want to ask you to sched some light on this incident. - Is it possible that boost does that process tree walk ? - Is this a known problem ? - Are there any hints how to solve this problem ? I talked to SUN and they say it's not their problem. There is no official whitepaper that requires that the init process always has PID 1. Any help is appreciated Sincerely Bernhard -- Minds are like parachutes They only function when open

6 8

how to suppress warning messages in boost file system
by Avi Bahra 10 Sep '09

10 Sep '09

Does anyone know how to suppress warning messages made by HP-UX aCC compiler. In particular: "/scratch/ma/ma0/hpia64/boost/boost_1_39_0/boost/filesystem/operations.hpp", line 579: warning #2236-D: controlling expression is constant && "boost::filesystem::complete() precondition not met" ); I get so many of these, its difficult to see the wood from the trees. Any help appreciated. Best regards, Ta, Avi

1 0

[asio] fails to compile on HP-UX aCC 11.23 due to ::pselect
by Avi Bahra 10 Sep '09

10 Sep '09

Boost 1.39/1.40 asio will not compile with acc A.06.20 on HPUX 11.23 : I have following error: "/scratch/ma/ma0/hpia64/boost/boost_1_39_0/boost/asio/detail/socket_ops.hpp", line 643: error #2282: the global scope has no "pselect" return error_wrapper(::pselect(nfds, readfds, The offending code in socket_ops.hpp is : inline int select(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, timeval* timeout, boost::system::error_code& ec) { ........... #if defined(__hpux) && defined(__HP_aCC) timespec ts; ts.tv_sec = timeout ? timeout->tv_sec : 0; ts.tv_nsec = timeout ? timeout->tv_usec * 1000 : 0; return error_wrapper(::pselect(nfds, readfds, writefds, exceptfds, timeout ? &ts : 0, 0), ec); #else int result = error_wrapper(::select(nfds, readfds, writefds, exceptfds, timeout), ec); if (result >= 0) clear_error(ec); return result; #endif } If I comment out the #ifdef with pselect in it, then everything appears to be ok. >From googling around it appears that pselect was only valid for certain OS versions, however #if can not detect this. Has anyone found a more reliable workaround ? Best regards, Ta, Avi

1 0

sending struct of int from Linux to Windows using boost::asio
by A.Agrawal＠patrick.com.au 10 Sep '09

10 Sep '09

Hello All, I am having trouble using boost:asio to send a simple struct message_header from server (linux) to the client (windows). typedef struct MessageHeader { uint32_t _data_length; //length of data attached uint8_t _message_type; //MESSAGE_TYPE uint8_t _segment_name; //SEGMENT_NAME uint16_t _request_id; //Request Id assigned by the client to the request to uniquely identify the request uint16_t _count_of_records; //Number of records affected by the operation, 0 means complete segment is affected. } MessageHeader; typedef struct Message { boost::array<char, header_length> _header_array; } Message Server side code (Linux): =============== MessageHeader request_header; request_header._data_length = 0; request_header._message_type = MSG_READ; request_header._segment_name = SEG_OOW; request_header._count_of_records = 0; request_header._request_id = 100; string _data_serialized = ""; uint8_t header[header_length]; //header_length is defined as 10 memcpy(header, (uint8_t*)(&(request_header)), header_length); std::vector<boost::asio::const_buffer> buffers; buffers.push_back(boost::asio::buffer(header, header_length)); buffers.push_back(boost::asio::buffer((_data_serialized).c_str(), _data_serialized.length())); boost::asio::async_write(_socket, buffers, boost::bind(&ClientSession::handle_write, shared_from_this(), boost::asio::placeholders::error)); Client Side code (Windows): ================ Message _read_message; MessageHeader _message_header; Handle_connect(....) { boost::asio::async_read(_socket, boost::asio::buffer(_read_msg._header_array, header_length), boost::bind(&DJClient::Handle_read_header, this, boost::asio::placeholders::error)); } Handle_read_header(...) { memcpy(&_message_header, read_msg._header_array.data(), header_length); } Surprisingly the same code works fine from "Windows to Windows" and "Windows to linux" but has problem when used on "Linux to Windows". When sent from Linux server, Windows server receives garbage data. Sending of normal ASCII characters from Linux to Windows work fine. Please help if anyone can. Thanks and Regards, Anil Agrawal

4 3

graph cut compilation error
by David Doria 10 Sep '09

10 Sep '09

I made a super simple example: A graph with 2 nodes and an edge between them. On trying to call kolmogorov_max_flow, I am getting: error: cannot convert 'boost::detail::error_property_not_found' to 'long int' in initialization Can anyone see what I am doing wrong? #include <iostream> // for std::cout #include <utility> // for std::pair #include <algorithm> // for std::for_each #include <boost/graph/graph_traits.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/kolmogorov_max_flow.hpp> using namespace boost; // create a typedef for the Graph type typedef adjacency_list<vecS, vecS, bidirectionalS> Graph; int main(int,char*[]) { // declare a graph object Graph g(2); //a graph with 2 vertices // add the edges to the graph object for (int i = 0; i < 1; ++i) { add_edge(0, 1, g); //add an edge between node 0 and node 1 } //find min cut //typedef adjacency_list_traits<vecS, vecS, directedS> Traits; //if we want a directed graph typedef adjacency_list_traits<vecS, vecS, bidirectionalS> Traits; Traits::vertex_descriptor s, t; *//the error is on this line* long flow = kolmogorov_max_flow(g, s, t); // a list of sources will be returned in s, and a list of sinks will be returned in t std::cout << "Max flow is: " << flow << std::endl; return 0; } Also, I see that you can add edge weights like this: > const int num_nodes = 5; > E edges[] = { E(0,2), > E(1,1), E(1,3), E(1,4), > E(2,1), E(2,3), > E(3,4), > E(4,0), E(4,1) }; > int weights[] = { 1, 2, 1, 2, 7, 3, 1, 1, 1}; > > Graph G(edges + sizeof(edges) / sizeof(E), weights, num_nodes); > but if I want to add edges like this: for (int i = 0; i < 1; ++i) > { > add_edge(0, 1, g); //add an edge between node 0 and node 1 > } > How would I specify the edge weights? Thanks! David

2 10

[thread] Obtaining thread id on Windows
by Agustín K-ballo Bergé 09 Sep '09

09 Sep '09

I'm using Boost.Thread to create a thread that process the message queue on Windows. In order to send it a message via PostThreadMessage I need a thread id rather than a handle. Is there a way to obtain the native thread id from a boost::thread ? If not, any help on how to patch my local copy of the library? There is no documented way of getting a thread id from a thread handle in Windows XP. Thank you. Agustín K-ballo Bergé.-

6 8

[Spirit/Graph] New 1.40.0 compile errors in Spirit/Graph headers when using GCC with _GLIBCXX_DEBUG‏
by Tony Lewis 09 Sep '09

09 Sep '09

When I compile this script (saved as test.cpp) which includes a pair of Boost Graph headers : #include <boost/graph/adjacency_list.hpp> #include <boost/graph/depth_first_search.hpp> int main() { return 0; } ...using the compile command : g++ -I/usr/include/boost -D_GLIBCXX_DEBUG test.cpp -o test ...I get (this warning and) these errors from the Boost Spirit library: In file included from /usr/include/c++/4.3/backward/hash_set:64, from /usr/include/boost/graph/adjacency_list.hpp:25, from test.cpp:1: /usr/include/c++/4.3/backward/backward_warning.h:33:2: warning: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated. In file included from /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/has_find.hpp:23, from /usr/include/boost/spirit/home/phoenix/stl/algorithm/querying.hpp:17, from /usr/include/boost/spirit/home/phoenix/algorithm.hpp:11, from /usr/include/boost/spirit/home/phoenix.hpp:10, from /usr/include/boost/graph/depth_first_search.hpp:24, from test.cpp:2: /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:38: error: wrong number of template arguments (4, should be 1) /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:28: error: provided for ‘template<class T> struct boost::is_std_map’ /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:38: error: expected unqualified-id before ‘>’ token /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:53: error: wrong number of template arguments (4, should be 1) /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:43: error: provided for ‘template<class T> struct boost::is_std_multimap’ /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:53: error: expected unqualified-id before ‘>’ token In file included from /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/has_find.hpp:24, from /usr/include/boost/spirit/home/phoenix/stl/algorithm/querying.hpp:17, from /usr/include/boost/spirit/home/phoenix/algorithm.hpp:11, from /usr/include/boost/spirit/home/phoenix.hpp:10, from /usr/include/boost/graph/depth_first_search.hpp:24, from test.cpp:2: /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_set.hpp:37: error: wrong number of template arguments (3, should be 1) /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_set.hpp:28: error: provided for ‘template<class T> struct boost::is_std_set’ /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_set.hpp:37: error: expected unqualified-id before ‘>’ token /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_set.hpp:51: error: wrong number of template arguments (3, should be 1) /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_set.hpp:42: error: provided for ‘template<class T> struct boost::is_std_multiset’ /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_set.hpp:51: error: expected unqualified-id before ‘>’ token In file included from /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/has_sort.hpp:22, from /usr/include/boost/spirit/home/phoenix/stl/algorithm/transformation.hpp:17, from /usr/include/boost/spirit/home/phoenix/algorithm.hpp:12, from /usr/include/boost/spirit/home/phoenix.hpp:10, from /usr/include/boost/graph/depth_first_search.hpp:24, from test.cpp:2: /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_list.hpp:36: error: wrong number of template arguments (2, should be 1) /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_list.hpp:28: error: provided for ‘template<class T> struct boost::is_std_list’ /usr/include/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_list.hpp:36: error: expected unqualified-id before ‘>’ token I don't get the errors if I use this compile command which doesn't define _GLIBCXX_DEBUG : g++ -I/usr/include/boost test.cpp -o test ...and I don't get the errors if I use this compile command which uses the previous 1.39 libraries : g++ -I/usr/include/boost-1_39 -D_GLIBCXX_DEBUG test.cpp -o test If I reverse the order of the headers when using the original compile command, I still get errors but different errors. My compiler is gcc 4.3.3 (Ubuntu 4.3.3-5ubuntu4), my OS is Ubuntu 9.04 and my kernel is 2.6.28-15-generic. Many thanks in advance for any help. _________________________________________________________________ View your other email accounts from your Hotmail inbox. Add them now. http://clk.atdmt.com/UKM/go/167688463/direct/01/

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units use and weird cases....suggestions needed
by Noah Roberts 09 Sep '09

09 Sep '09

I'm using the units library to make sure values supplied to functions make sense, dimensionally, and are in the units expected. I've got a strange case I have to work with though. For the most part we've decided to standardize on the SI system. I write my functions to be system independent when possible, but most of what I'm working with is empirically based. For this I'll take the SI units expected and write the function only for that system (since other systems will use different equations entirely). The problem domain is fluid dynamics so enter the Kv and Cv values. Technically these are a measure of volumetric flow. For instance, Kv is defined as: the flow of water with temperature ranging 5 - 30 oC through a valve in cubic meters per hour (m3/h) with a pressure drop of 1 bar The problem is that engineers see this as a "unitless" value and treat it as having no units at all. They use Kv in SI based equations, not m3/s as we'd expect. Thus all equations being fed to us use Kv as if it were a natural part of the equation. Most of the time these dimensions do not compute dimensionally anyway but there's rare cases when they do. I have gotten the engineers (those giving me specs for code I write) to decide on Kv instead of doing both Kv and Cv (it's a basic conversion). The options I see are: 1. Convert both Kv and Cv into m3/s and require engineers to give equations with that in mind. This will be very unnatural for them though. 1a. Do the conversion but don't tell them I'm doing it. This one seems the least preferable as we've tried to make sure eng. documents and code match and further...it might be hard for maintenance developers later. 2. Pretend...just use m3ps and pretend I'm using Kv (m3/h). Don't convert or anything...just lie. I have a hard time with that one since it sort of goes against the purpose of the library and again would seem to introduce confusion for maintenance. 3. Use different types either in the form of a different unit "system" or using BOOST_STRONG_TYPEDEF...or something. What are some suggestions here?

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Boost-Pro Windows Installer for Boost 1.40
by Klaim 09 Sep '09

09 Sep '09

Hi! I'm not sure how and when the windows installer for Boost 1.40 is planned. Where can I find the informations about that? Will it be available soon? I'm waiting for this installer before updating my Boost version. Thanks for you time. Joël Lamotte.

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[iostreams] regex_filter how-to
by Michał Nowotka 09 Sep '09

09 Sep '09

Hello I have following problem: I need to filter some records from one file and save it to another in my c++ application. For example from this file: /////////////////// in.txt //////////////////////////////// http://google.com http://yahoo.com ... http://google.com/analytics //////////////////////////////////////////////////////////// I want to only extract lines that match regex: ^(?:http://google.com).* to get: //////////////// out.txt /////////////////////////////// http://google.com ... http://google.com/analytics ///////////////////////////////////////////////////////// So I wrote something like this: class Writer { public: Writer() :matchesCount_(0){} virtual std::string operator() (const boost::match_results<const char*>& result) { matchesCount_ = result.size(); return aux_; } int getMatchesCount() const { return matchesCount_; } virtual ~Writer(){} private: std::string aux_; //this i completely useless but i must return something in operator() int matchesCount_; }; /////////////////////////////////////////////////////////////////////////////// class FileWriter : public Writer { public: FileWriter(std::ostream* of) :of_(of) {} std::string operator() (const boost::match_results<const char*>& result) { *of_ << *result.begin() << endl; return Writer::operator()(result); } private: std::ostream* of_; }; /////////////////////////////////////////////////////////////////////////////// int main(int argc, char *argv[]) { boost::regex match_lower("^(?:http://google.com).*"); std::ofstream out("out.txt"); string str; filtering_istream first(boost::iostreams::regex_filter(match_lower, FileWriter(&out))); first.push(file_source("in.txt", ios_base::in)); first.ignore();// my output is a side effect of filtering so I don't have to process this stream return 0; } ///////////////////////////////////////////////////////////////////////////// It works fine for short files (IMO for files which size is smaller then size of stream buffer). But I work with very large files (~4,7 GB) and then this is not a good solution. Do you have any idea how to solve it? -- Regards Michał Nowotka

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[BGL] Accessing graph_properties member
by Caligula 09 Sep '09

09 Sep '09

How can I access a member of graph_properties, such as a boolean or a vertex descriptor? A map might not be appropriate because there is only one graph. -Caligula

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