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Re: [Boost-users] [wave] assertion failed - multithread issue?
by Ein Held 09 Mar '09

09 Mar '09

>From: Hartmut Kaiser <hartmut.kaiser <at> gmail.com> >Subject: Re: [wave] assertion failed - multithread issue? >Newsgroups: gmane.comp.lib.boost..user >Date: 2009-03-09 14:55:58 GMT (41 minutes ago) >> when parsing some cpp files via boost.wave using multiple threads, I >> randomly get a failed assertion. >> >> "Assertion failed: static_cast<RefCountType>(*d.begin()) != 0, file >> C:\projekte\libs\boost\include\boost- >> 1_38/boost/wave/util/flex_string.hpp, line 1216" >> >> I am pretty sure that this is a multi-thread issue, as when using only >> one thread to parse the files, everything works fine. >> Unfortunately I cannot give you more specific information as I cannot >> get gdb to run on my system. >> I am using gcc 4.3.3 > >That certainly makes it almost impossible to reproduce the problem for me. > >But one note: if you're using Wave in a multithreaded context (i.e. using the same Wave context/iterators >from different threads) you certainly need to properly lock the Wave objects as these are not thread safe >per se. The only thing guaranteed is that Wave doesn't use any (not protected) global data structures >internally.. So, as long as a certain wave context/iterator instance is used from one thread only (even in >multi threaded applications), you should be fine. > >HTH >Regards Hartmut Hello Hartmut I use seperate wave instances for each thread. Anyway, I'll try to get gdb running and debug the problem. Nontheless there is another problem(?) in wave. Wave still uses the old filesystem interface, which makes it incompatible with code compiled with BOOST_FILESYSTEM_NO_DEPRECATED. That is a bug, right? Thank you

2 1

Pointer serialization and deserialization
by niranjan bangera 09 Mar '09

09 Mar '09

Hi all, Boost:1.38.0 compiler:gcc4.1.1 I am trying to serialize and deserialize a pointer to the class, but ended with the segmentation fault, Is that the null pointer serialization gives the segmentation fault?. I read in document that, library will maintain the Null pointer. if not how can i serialize? ,any docs or related refference is a;so acceptable. Thanks in advance.... one more thing: what -1 in archive(text_archive) indicates? Example ------------ #include <fstream> #include "boost/archive/text_iarchive.hpp" #include "boost/archive/text_oarchive.hpp" #include "boost/serialization/access.hpp" #include "boost/serialization/assume_abstract.hpp" class Dkpt { public: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int file_version) { (void) file_version; ar & data_; ar & b_i; ar & f_er; ar & pa_er; ar & ct_c; } private: uint8_t data_; bool b_i; bool f_er; bool pa_er; bool ct_c; }; ---- class RB : public RM { public: virtual void checkpoint_save(boost::archive::text_oarchive & oa) { oa & dr; } virtual void checkpoint_retrive(boost::archive::text_iarchive & ia) { ia & dr; } private: Dkpt* dr; ;} Thanks. Niranjan

2 1

[asio] communication with a remote apache tomcat service
by jmpulido 09 Mar '09

09 Mar '09

Hello all: I'm working on a client program which needs to communicate with a remote server using an http based protocol ,which running a service (java servlet under apache tomcat). I developed it using the example in http://www.boost.org/doc/libs/1_38_0/doc/html/boost_asio/example/http/clien… as reference. When testing on a local server with apache tomcat deploying the service, (http://localhost:8084) it worked fine, since I established the communication with the server with these statements: tcp::resolver resolver(io_service); tcp::resolver::query query("127.0.0.1", 8084); tcp::resolver::iterator endpoint_iterator = resolver.resolve (query); It worked all right with that connection string, but when we deployed the service in a commercial remote server with apache tomcat preinstalled, the connection string has becomed something like this: "http://urltomyserver:8080/ServiceName" The problem here seems to be that I only can use tcp::resolver::query when I have an specific ip or url, and a connection port both separated but, apparently, now I need to specify the port within in the connection string. I couldn't make this work, and tcp::resolver::iterator endpoint_iterator = resolver.resolve(query) always either can't resolve the query or it gets timeout. Is there anyway I could use a connection string with the port specified within, like "http://urltomyserver:8080/ServiceName" and make it work with tcp::resolver::query? Do I need to find an alternative? The second option would be very expensive in developing time terms, so I'm hoping you could help me to make this work. Thanks a lot :) José Manuel Pulido

3 2

Re: [Boost-users] [Boost.Test] valgrind complains about invalid reads
by Paolo Brandoli 09 Mar '09

09 Mar '09

Hello, The error appears also in 1.38.0 unless I change the test_unit destructor to virtual. There is no need for Valgrind to popup the error: a simple gdb execution (MINGW widh gcc4.3.3) will show the error when the test application terminates. Bets regards, Paolo Brandoli Christopher Jefferson wrote: > > > On 19 Dec 2008, at 07:23, Gennadiy Rozental wrote: > >> Peter Klotz wrote: >>> Gennadiy Rozental wrote: >>>> Peter Klotz <peter.klotz <at> aon.at> writes: >>>> >>>>> Why not just adding the virtual destructor to make valgrind happy? >>>> >>>> Did you try removing virtual from test_suite destructor instead? >>>> >>> Yes, just making ~test_suite() non virtual worsens things. >>> valgrind complains about twice as many "invalid read" errors. >> >> [...] >> >>> Making ~test_unit() virtual removes all errors. Then even a non >>> virtual ~test_suite() is no longer a problem. >>> So the final conclusion would be to remove virtual from >>> ~test_suite() and add it to the base class destructor ~test_unit(). >> >> Peter, >> >> I am not convinced there is a bug inside the Boost.Test code. As far >> as I can tell all I am doing is legitimate. Maybe we should report >> this to the valgrind developers instead? >> > > Can you produce a reduced test case, without any boost headers? I'd be > happy to have a look at it. > > Chris > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > -- View this message in context: http://www.nabble.com/-Boost.Test--valgrind-complains-about-invalid-reads-t… Sent from the Boost - Users mailing list archive at Nabble.com.

1 0

I Can't Compile The QuickStart Example (Part 2)
by Fagner Patricio 09 Mar '09

09 Mar '09

Hello Everybody again!!! Now I'm using the newest version of the boost library ( 1.38.0) I Download it from sourceforge, I have some problem, it compile but don't create the extension module called extending thie my output: *fagner@fagner-desktop:~/Downloads/boost_1_38_0/libs/python/example/quickstart$ bjam toolset=gcc --verbose-teste test --debug-configuration* notice: found boost-build.jam at /home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/boost-build.jam notice: loading Boost.Build from /home/fagner/Downloads/boost_1_38_0/tools/build/v2 notice: Searching /etc /home/fagner /usr/share/boost-build /home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/../../../../tools/build/v2 /home/fagner/Downloads/boost_1_38_0/tools/build/v2/kernel /home/fagner/Downloads/boost_1_38_0/tools/build/v2/util /home/fagner/Downloads/boost_1_38_0/tools/build/v2/build /home/fagner/Downloads/boost_1_38_0/tools/build/v2/tools /home/fagner/Downloads/boost_1_38_0/tools/build/v2/contrib /home/fagner/Downloads/boost_1_38_0/tools/build/v2/. for site-config configuration file site-config.jam . notice: Loading site-config configuration file site-config.jam from /home/fagner/Downloads/boost_1_38_0/tools/build/v2/site-config.jam . notice: Searching /home/fagner /usr/share/boost-build /home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/../../../../tools/build/v2 /home/fagner/Downloads/boost_1_38_0/tools/build/v2/kernel /home/fagner/Downloads/boost_1_38_0/tools/build/v2/util /home/fagner/Downloads/boost_1_38_0/tools/build/v2/build /home/fagner/Downloads/boost_1_38_0/tools/build/v2/tools /home/fagner/Downloads/boost_1_38_0/tools/build/v2/contrib /home/fagner/Downloads/boost_1_38_0/tools/build/v2/. for user-config configuration file user-config.jam . notice: Loading user-config configuration file user-config.jam from /home/fagner/user-config.jam . notice: [python-cfg] Configuring python... notice: [python-cfg] user-specified version: "2.5" notice: [python-cfg] Checking interpreter command "python2.5"... notice: [python-cfg] running command '"python2.5" -c "from sys import *; print 'version=%d.%d\nplatform=%s\nprefix=%s\nexec_prefix=%s\nexecutable=%s' % (version_info[0],version_info[1],platform,prefix,exec_prefix,executable)" 2>&1' notice: [python-cfg] ...requested configuration matched! notice: [python-cfg] Details of this Python configuration: notice: [python-cfg] interpreter command: "python2.5" notice: [python-cfg] include path: "/usr/include/python2.5" notice: [python-cfg] library path: "/usr/lib/python2.5/config" "/usr/lib" notice: [cmdline-cfg] Detected command-line request for gcc: toolset= gcc version= notice: [cmdline-cfg] toolset gcc not previously configured; attempting to auto-configure now notice: will use 'g++' for gcc, condition <toolset>gcc-4.2.4 notice: using gcc libraries :: <toolset>gcc-4.2.4 :: /usr/bin /usr/lib /usr/lib32 /usr/lib64 notice: using gcc archiver :: <toolset>gcc-4.2.4 :: /usr/bin/ar warning: toolset gcc initialization: can not find tool windres warning: initialized from notice: using rc compiler :: <toolset>gcc-4.2.4 :: /usr/bin/as notice: iostreams: using prebuilt zlib notice: iostreams: using prebuilt bzip2 ...patience... ...patience... ...found 1356 targets... ...updating 54 targets... common.mkdir bin common.mkdir bin/test_ext.test common.mkdir bin/test_ext.test/gcc-4.2.4 common.mkdir bin/test_ext.test/gcc-4.2.4/debug common.mkdir bin/gcc-4.2.4 common.mkdir bin/gcc-4.2.4/debug gcc.compile.c++ bin/gcc-4.2.4/debug/extending.o common.mkdir ../../../../bin.v2 common.mkdir ../../../../bin.v2/libs common.mkdir ../../../../bin.v2/libs/python common.mkdir ../../../../bin.v2/libs/python/build common.mkdir ../../../../bin.v2/libs/python/build/gcc-4.2.4 common.mkdir ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/numeric.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/list.o ../../../../libs/python/src/list.cpp: In static member function ‘static boost::python::detail::new_non_null_reference_t* boost::python::detail::list_base::call(const boost::python::api::object&)’: ../../../../libs/python/src/list.cpp:17: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/long.o ../../../../libs/python/src/long.cpp: In static member function ‘static boost::python::detail::new_non_null_reference_t* boost::python::detail::long_base::call(const boost::python::api::object&)’: ../../../../libs/python/src/long.cpp:13: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/long.cpp: In static member function ‘static boost::python::detail::new_non_null_reference_t* boost::python::detail::long_base::call(const boost::python::api::object&, const boost::python::api::object&)’: ../../../../libs/python/src/long.cpp:20: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/long.cpp: In constructor ‘boost::python::detail::long_base::long_base()’: ../../../../libs/python/src/long.cpp:26: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/dict.o ../../../../libs/python/src/dict.cpp: In static member function ‘static boost::python::detail::new_reference_t* boost::python::detail::dict_base::call(const boost::python::api::object&)’: ../../../../libs/python/src/dict.cpp:33: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/tuple.o ../../../../libs/python/src/tuple.cpp: In static member function ‘static boost::python::detail::new_reference_t* boost::python::detail::tuple_base::call(const boost::python::api::object&)’: ../../../../libs/python/src/tuple.cpp:13: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/str.o ../../../../libs/python/src/str.cpp: In static member function ‘static boost::python::detail::new_reference_t* boost::python::detail::str_base::call(const boost::python::api::object&)’: ../../../../libs/python/src/str.cpp:14: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In function ‘boost::python::ssize_t boost::python::detail::<unnamed>::str_size_as_py_ssize_t(size_t)’: ../../../../libs/python/src/str.cpp:29: aviso: comparison between signed and unsigned integer expressions ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::capitalize() const’: ../../../../libs/python/src/str.cpp:76: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:76: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::center(const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:77: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:77: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::expandtabs() const’: ../../../../libs/python/src/str.cpp:132: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:132: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::expandtabs(const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:133: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:133: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::join(const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:239: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:239: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::ljust(const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:240: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:240: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::lower() const’: ../../../../libs/python/src/str.cpp:241: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:241: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::lstrip() const’: ../../../../libs/python/src/str.cpp:242: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:242: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::replace(const boost::python::api::object&, const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:243: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:243: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::replace(const boost::python::api::object&, const boost::python::api::object&, const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:244: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:244: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::rjust(const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:294: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:294: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::rstrip() const’: ../../../../libs/python/src/str.cpp:295: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:295: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::strip() const’: ../../../../libs/python/src/str.cpp:346: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:346: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::swapcase() const’: ../../../../libs/python/src/str.cpp:347: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:347: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::title() const’: ../../../../libs/python/src/str.cpp:348: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:348: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::translate(const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:349: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:349: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::translate(const boost::python::api::object&, const boost::python::api::object&) const’: ../../../../libs/python/src/str.cpp:350: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:350: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp: In member function ‘boost::python::str boost::python::detail::str_base::upper() const’: ../../../../libs/python/src/str.cpp:351: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/str.cpp:351: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/slice.o common.mkdir ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/converter gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/converter/from_python.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/converter/registry.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/converter/type_id.o common.mkdir ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/enum.o ../../../../libs/python/src/object/enum.cpp:28: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/class.o ../../../../libs/python/src/object/class.cpp: In function ‘PyObject* boost::python::static_data_descr_get(PyObject*, PyObject*, PyObject*)’: ../../../../libs/python/src/object/class.cpp:77: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp: In function ‘int boost::python::static_data_descr_set(PyObject*, PyObject*, PyObject*)’: ../../../../libs/python/src/object/class.cpp:98: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp:100: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp: At global scope: ../../../../libs/python/src/object/class.cpp:362: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp:368: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp: In function ‘boost::python::api::object boost::python::objects::<unnamed>::new_class(const char*, size_t, const boost::python::type_info*, const char*)’: ../../../../libs/python/src/object/class.cpp:510: aviso: comparison between signed and unsigned integer expressions ../../../../libs/python/src/object/class.cpp: In member function ‘void boost::python::objects::class_base::add_property(const char*, const boost::python::api::object&, const char*)’: ../../../../libs/python/src/object/class.cpp:575: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp: In member function ‘void boost::python::objects::class_base::add_property(const char*, const boost::python::api::object&, const boost::python::api::object&, const char*)’: ../../../../libs/python/src/object/class.cpp:585: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp: In member function ‘void boost::python::objects::class_base::add_static_property(const char*, const boost::python::api::object&)’: ../../../../libs/python/src/object/class.cpp:594: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/class.cpp: In member function ‘void boost::python::objects::class_base::add_static_property(const char*, const boost::python::api::object&, const boost::python::api::object&)’: ../../../../libs/python/src/object/class.cpp:603: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/function.o ../../../../libs/python/src/object/function.cpp: In member function ‘PyObject* boost::python::objects::function::call(PyObject*, PyObject*) const’: ../../../../libs/python/src/object/function.cpp:169: aviso: comparison between signed and unsigned integer expressions ../../../../libs/python/src/object/function.cpp: In member function ‘void boost::python::objects::function::argument_error(PyObject*, PyObject*) const’: ../../../../libs/python/src/object/function.cpp:300: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/function.cpp: At global scope: ../../../../libs/python/src/object/function.cpp:665: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/function.cpp:665: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/function.cpp:665: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/function.cpp:665: aviso: deprecated conversion from string constant to ‘char*’ ../../../../libs/python/src/object/function.cpp:665: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/inheritance.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/life_support.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/pickle_support.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/errors.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/module.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/converter/builtin_converters.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/converter/arg_to_python_base.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/iterator.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/stl_iterator.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object_protocol.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object_operators.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/wrapper.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/import.o gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/exec.o ../../../../libs/python/src/exec.cpp: In function ‘boost::python::api::object boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)’: ../../../../libs/python/src/exec.cpp:42: aviso: deprecated conversion from string constant to ‘char*’ gcc.compile.c++ ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/object/function_doc_signature.o gcc.link.dll ../../../../bin.v2/libs/python/build/gcc-4.2.4/debug/libboost_python-gcc42-d-1_38.so.1.38.0 gcc.link.dll bin/gcc-4.2.4/debug/extending.so capture-output bin/test_ext.test/gcc-4.2.4/debug/test_ext **passed** bin/test_ext.test/gcc-4.2.4/debug/test_ext.test common.mkdir bin/test_embed.test common.mkdir bin/test_embed.test/gcc-4.2.4 common.mkdir bin/test_embed.test/gcc-4.2.4/debug gcc.compile.c++ bin/gcc-4.2.4/debug/embedding.o embedding.cpp: In function ‘void exec_test()’: embedding.cpp:56: aviso: deprecated conversion from string constant to ‘char*’ gcc.link bin/gcc-4.2.4/debug/embedding testing.capture-output bin/test_embed.test/gcc-4.2.4/debug/test_embed.run **passed** bin/test_embed.test/gcc-4.2.4/debug/test_embed.test ...updated 54 targets... *fagner@fagner-desktop:~/Downloads/boost_1_38_0/libs/python/example/quickstart$ * *fagner@fagner-desktop:~/Downloads/boost_1_38_0/libs/python/example/quickstart$ ls* bin boost-build.jam embedding.cpp extending.cpp Jamroot script.py test_extending.py test_extending.pyc *fagner@fagner-desktop:~/Downloads/boost_1_38_0/libs/python/example/quickstart$ * *fagner@fagner-desktop:~/Downloads/boost_1_38_0/libs/python/example/quickstart$ python2.5 test_extending.py* Trying: from extending import * Expecting nothing ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 6, in test_extending Failed example: from extending import * Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[0]>", line 1, in <module> from extending import * ImportError: No module named extending Trying: hi = hello('California') Expecting nothing ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 7, in test_extending Failed example: hi = hello('California') Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[1]>", line 1, in <module> hi = hello('California') NameError: name 'hello' is not defined Trying: hi.greet() Expecting: 'Hello from California' ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 8, in test_extending Failed example: hi.greet() Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[2]>", line 1, in <module> hi.greet() NameError: name 'hi' is not defined Trying: invite(hi) Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 10, in test_extending Failed example: invite(hi) Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[3]>", line 1, in <module> invite(hi) NameError: name 'invite' is not defined Trying: hi.invite() Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 12, in test_extending Failed example: hi.invite() Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[4]>", line 1, in <module> hi.invite() NameError: name 'hi' is not defined Trying: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Expecting nothing ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 15, in test_extending Failed example: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[5]>", line 1, in <module> class wordy(hello): NameError: name 'hello' is not defined Trying: hi2 = wordy('Florida') Expecting nothing ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 19, in test_extending Failed example: hi2 = wordy('Florida') Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[6]>", line 1, in <module> hi2 = wordy('Florida') NameError: name 'wordy' is not defined Trying: hi2.greet() Expecting: 'Hello from Florida, where the weather is fine' ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 20, in test_extending Failed example: hi2.greet() Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[7]>", line 1, in <module> hi2.greet() NameError: name 'hi2' is not defined Trying: invite(hi2) Expecting: 'Hello from Florida! Please come soon!' ********************************************************************** File "/home/fagner/Downloads/boost_1_38_0/libs/python/example/quickstart/test_extending.py", line 22, in test_extending Failed example: invite(hi2) Exception raised: Traceback (most recent call last): File "/usr/lib/python2.5/doctest.py", line 1228, in __run compileflags, 1) in test.globs File "<doctest test_extending[8]>", line 1, in <module> invite(hi2) NameError: name 'invite' is not defined 1 items had no tests: test_extending.run ********************************************************************** 1 items had failures: 9 of 9 in test_extending 9 tests in 2 items. 0 passed and 9 failed. ***Test Failed*** 9 failures. *fagner@fagner-desktop:~/Downloads/boost_1_38_0/libs/python/example/quickstart$ * Now What is the error? Thanks for help. -- Fagner Patrício João Pessoa - PB Brasil

1 0

BOOST_PP_STRINGIZE for wchar_t?
by Hansi 09 Mar '09

09 Mar '09

Hello, is there any equivalent preprocessor macro available for BOOST_PP_STRINGIZE which gets a L"string"? Thanks Hansjörg

1 1

[asio] reopening of serial port fails - why?
by Markus Werle 09 Mar '09

09 Mar '09

Hi! The code below perfectly reads characters from the serial line for 6 seconds. The termination of the thread and a reopening of the connection then fails. What am i missing here? Markus ---snip--- // TestBoostAsio.cpp : Defines the entry point for the console application. // #include "stdafx.h" //int _tmain(int argc, _TCHAR* argv[]) //{ // return 0; //} /* minicom.cpp A simple demonstration minicom client with Boost asio Parameters: baud rate serial port (eg /dev/ttyS0 or COM1) To end the application, send Ctrl-C on standard input */ #include <deque> #include <iostream> #include <boost/bind.hpp> #include <boost/asio.hpp> #include <boost/asio/serial_port.hpp> #include <boost/thread.hpp> #include <boost/lexical_cast.hpp> #include <boost/date_time/posix_time/posix_time_types.hpp> #include <iostream> #ifdef POSIX #include <termios.h> #endif using namespace std; class minicom_client { public: minicom_client(boost::asio::io_service& io_service, unsigned int baud, const string& device) : active_(true), io_service_(io_service), serialPort(io_service, device) { if (!serialPort.is_open()) { cerr << "Failed to open serial port\n"; return; } boost::asio::serial_port_base::baud_rate baud_option(baud); serialPort.set_option(baud_option); // set the baud rate after the port has been opened read_start(); } void write(const char msg) // pass the write data to the do_write function via the io service in the other thread { io_service_.post(boost::bind(&minicom_client::do_write, this, msg)); } void close() // call the do_close function via the io service in the other thread { io_service_.post(boost::bind(&minicom_client::do_close, this, boost::system::error_code())); } bool active() // return true if the socket is still active { return active_; } private: static const int max_read_length = 512; // maximum amount of data to read in one operation void read_start(void) { // Start an asynchronous read and call read_complete when it completes or fails serialPort.async_read_some(boost::asio::buffer(read_msg_, max_read_length), boost::bind (&minicom_client::read_complete, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred)); } void read_complete(const boost::system::error_code& error, size_t bytes_transferred) { // the asynchronous read operation has now completed or failed and returned an error if (!error) { // read completed, so process the data cout.write(read_msg_, bytes_transferred); // echo to standard output read_start(); // start waiting for another asynchronous read again } else do_close(error); } void do_write(const char msg) { // callback to handle write call from outside this class bool write_in_progress = !write_msgs_.empty(); // is there anything currently being written? write_msgs_.push_back(msg); // store in write buffer if (!write_in_progress) // if nothing is currently being written, then start write_start(); } void write_start(void) { // Start an asynchronous write and call write_complete when it completes or fails boost::asio::async_write(serialPort, boost::asio::buffer(&write_msgs_.front(), 1), boost::bind (&minicom_client::write_complete, this, boost::asio::placeholders::error)); } void write_complete(const boost::system::error_code& error) { // the asynchronous read operation has now completed or failed and returned an error if (!error) { // write completed, so send next write data write_msgs_.pop_front(); // remove the completed data if (!write_msgs_.empty()) // if there is anthing left to be written write_start(); // then start sending the next item in the buffer } else do_close(error); } void do_close(const boost::system::error_code& error) { // something has gone wrong, so close the socket & make this object inactive if (error == boost::asio::error::operation_aborted) // if this call is the result of a timer cancel() return; // ignore it because the connection cancelled the timer if (error) cerr << "Error: " << error.message() << endl; // show the error message else cout << "Error: Connection did not succeed.\n"; cout << "Press Enter to exit\n"; serialPort.close(); active_ = false; } private: bool active_; // remains true while this object is still operating boost::asio::io_service& io_service_; // the main IO service that runs this connection boost::asio::serial_port serialPort; // the serial port this instance is connected to char read_msg_[max_read_length]; // data read from the socket deque<char> write_msgs_; // buffered write data }; int main(int argc, char* argv[]) { // on Unix POSIX based systems, turn off line buffering of input, so cin.get() returns after every keypress // On other systems, you'll need to look for an equivalent #ifdef POSIX termios stored_settings; tcgetattr(0, &stored_settings); termios new_settings = stored_settings; new_settings.c_lflag &= (~ICANON); new_settings.c_lflag &= (~ISIG); // don't automatically handle control- C tcsetattr(0, TCSANOW, &new_settings); #endif try { if (argc != 3) { cerr << "Usage: minicom <baud> <device>\n"; return 1; } boost::asio::io_service io_service; // define an instance of the main class of this program minicom_client c(io_service, boost::lexical_cast<unsigned int> (argv[1]), argv[2]); // run the IO service as a separate thread, so the main thread can block on standard input while (true) // PROBLEM: reentering this loop fails - why? { boost::thread t(boost::bind (&boost::asio::io_service::run, &io_service)); boost::asio::io_service io; boost::asio::deadline_timer timer(io, boost::posix_time::seconds(3)); timer.wait(); c.write('a'); boost::asio::deadline_timer timer2(io, boost::posix_time::seconds(3)); timer2.wait(); //while (c.active()) // check the internal state of the connection to make sure it's still running //{ // char ch; // cin.get(ch); // blocking wait for standard input // if (ch == 32) // ctrl-C to end program // break; // c.write(ch); //} c.close(); // close the minicom client connection t.join(); // wait for the IO service thread to close std::cout << "-------------------" << std::endl; } } catch (exception& e) { cerr << "Exception: " << e.what() << "\n"; } #ifdef POSIX // restore default buffering of standard input tcsetattr(0, TCSANOW, &stored_settings); #endif return 0; }

3 10

[Unordered] template find() request
by Kenneth Heafield 09 Mar '09

09 Mar '09

Hello Boost, Suppose I have a boost::unordered_set<std::string>. Now I want to find() a const char *, std::string, or even a string without zero termination (Google StringPiece). Converting these to std::string just to do a lookup is wasteful. Instead, I want to provide functors like: struct either_hash { size_t operator()(const std::string &str) const { return boost::hash_range(str.begin(), str.end()); } size_t operator()(const char *str) const { return boost::hash_range(str, str + std::strlen(str)); } }; This raises the question: what is either_hash::argument_type ? But it seems this is not used by boost::unordered_set . It should probably be std::string to match the underlying hash table. Would it make sense to change find() to template <class query_type> const_iterator find(const query_type& q) const ? For those familiar with Google StringPiece, one solution is using boost::unordered_set<StringPiece>, but then I have to keep the underlying strings somewhere outside the table. Further, a generalized find is useful in other cases, but this was the easiest to explain. Kenneth

3 4

Using program_options from a string?
by boostnewbie 09 Mar '09

09 Mar '09

Hello all. I am using the boost::program_options library for configuration files with great success. I'm wondering if it's possible to use the library using a string as a source, instead of a config file. I read the configuration file with code like this: if (vm.count("config")) { string f = vm["config"].as<string>() ; ifstream ifs(f.c_str()); store(parse_config_file(ifs, config_file_options), vm); po::notify(vm); } but what I'd also like to do is something along these lines, with a string as the original source instead of a file specified with my 'config' command line option: string str = "port = 3000 \n tmpdir = /tmp \n"; // something like this. this is what's in the config file. istringstream iss(str, istringstream::in); store(parse_config_file(iss, config_file_options), vm); po::notify(vm); These lines compile and execute without error but don't actually appear to update the 'vm'. Am I doing something wrong or is this not possible with the current incarnation of program_options? Thanks! -- View this message in context: http://www.nabble.com/Using-program_options-from-a-string--tp22405416p22405… Sent from the Boost - Users mailing list archive at Nabble.com.

2 1

lexical_cast<unsigned char>: Compiler error
by Hansi 09 Mar '09

09 Mar '09

Hello, I have a question. I need a lexical_cast for a BYTE. Now I get allways a compile error with VS2005 and VS2008: e.g. unsigned char test = 2; test = boost::lexical_cast<unsigned char>(L"2"); Error 2 error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'unsigned char' (or there is no acceptable conversion) D:\boost\boost_1_38_0\boost\lexical_cast.hpp 771 What I do wrong? How I can solve this problem? Regards Hansjörg

3 8

Does boost have something like this, or does it need one?
by Roberto Gimenez 08 Mar '09

08 Mar '09

I need something like this: template <typename Type> struct Array { private: Type *data; int size; public: explicit Array(Type *data, int size) : data(data), size(size) { assert(size > 0); } Type &operator[](int index) const { return data[index]; } Type &at(int index) const { assert(index > 0 && index < size); return data[index]; } Type *getData() const { return data; } Type *begin() const { return data; } Type *end() const { return data + size; } int getSize() const { return size; } }; But I think boost doesn't have it. boost::array also takes an std::size_t template parameter but that doesn't work for what I want to do because I want to be able to pass a function something like this: void myFunction(const Array<int> &a) { ... } void main() { int myVec1[6] = { 1,2,3,4,5,6 }; int myVec2[2] = { 7,8 }; myFunction(Array<int>(myVec1, 6)); myFunction(Array<int>(myVec2, 2)); } I can't do this with boost::array and std::vector allocates and I don't want that too. Any help?

3 4

[serialization] nans and infinite floats in text based archives...
by François Mauger 08 Mar '09

08 Mar '09

Hi serializers, archivers, boosters and Robert, I've used boost:serialization (boost 1.34.1 under Linux ubuntu and/or SL4,, gcc 4.2) for one year. Thanks to this excellent library, our team store critical experimental data (3 TB using zipped text archives). Up to now, I met no problem with text/XML archives as all the stored double values pass the 'isnormal' check. Now my new data analysis programs needs to (de)serialize doubles even if they are NaNs or infinites (for it makes sense for me). Unfortunately, the load method for double fails while reading 'nan' (or 'inf') from the input for this is the standard behavior of the ostream with "! isnormal" doubles. After studying the source code for boost text oriented I/O archives in the hope to find a fix for my problem, I made an attempt to make boost aware of nans and +/-infs in a pragmatic way (I mean trying to save time and storage but keep the information and get rid of the stream error exception). I attached a tiny tarball to show the hack I've done. I'm not sure at all this is be a definitively good and elegant approach to handle nans within text based archives. So I'd appreciate to get some feedback and comments from Robert or any expert in this field. As I work only with Linux, gcc and 1.34.1, this approach is likely not to be portable... but maybe this could initiate some work to fix it in an official way. thanks for your attention and for all this very very useful material. regards frc -- Francois Mauger Laboratoire de Physique Corpusculaire de Caen et Universite de Caen ENSICAEN - 6, Boulevard du Marechal Juin, 14050 CAEN Cedex, FRANCE e-mail: mauger(a)lpccaen.in2p3.fr tel.: (0/+33) 2 31 45 25 12 fax: (0/+33) 2 31 45 25 49

2 3

Re: [Boost-users] [Proto] Annoying MSVC bug
by Vial, Florent 08 Mar '09

08 Mar '09

>> I'd like to encourage Microsoft to reopen this bug report and fix it. >> Could any of you with logins to Microsoft Connect go here >> https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?Fe edbackID=282942 >> and answer their 3 question survey expressing your dissatisfaction and >> encourage them to fix this. For those lazy not wanting to browse back like i did: the connect ID is 282942. >https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?F eedbackID=283021 And here 283021. Cheers, Florent Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: Munchen - Registergericht: Amtsgericht Munchen - Handelsregisternummer: HRA 57918 Personlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: Munchen - Registergericht: Amtsgericht Munchen - Handelsregisternummer: HRB 54477 Geschaftsfuhrer: Prof. Dr. Dejan Ilic; Franz Kraus; Jens Schafer

2 1

[mem_fn] Ambiguous call to mem_fn with stdcall function
by Conrad Scott 08 Mar '09

08 Mar '09

I'm trying to use g++ (and MinGW) to compile a win32 Direct3X program that I've written under Visual C++. All is well (so far) except for one thing. I'm using the technique suggested in the Boost shared_ptr documentation to store pointers to COM objects, which works fine under Visual C++ but under g++ (either 3.4.x or 4.3.x) I get errors about the call to mem_fn being ambiguous due to stdcall / non-stdcall overloading. I can't find any references to this problem on the net so I assume I'm doing something utterly boneheaded. Any hints would be very welcome. For example: #define BOOST_MEM_FN_ENABLE_STDCALL #include <d3d9.h> #include <boost/mem_fn.hpp> #include <boost/shared_ptr.hpp> void test_mem_fn(IDirect3DDevice9 * const device) { boost::shared_ptr<IDirect3DDevice9> ptr( device, boost::mem_fn(&IDirect3DDevice9::Release) ); } test/test_mem_fn.cpp:13: error: call of overloaded 'mem_fn(ULONG (IDirect3DDevice9::*)())' is ambiguous C:/Boost/include/boost-1_38/boost/bind/mem_fn_cc.hpp:15: note: candidates are: boost::_mfi::mf0<R, T> boost::mem_fn(R (T::*)()) [with R = ULONG, T = IDirect3DDevice9] C:/Boost/include/boost-1_38/boost/bind/mem_fn_cc.hpp:15: note: boost::_mfi::mf0_stdcall<R, T> boost::mem_fn(R (T::*)()) [with R = ULONG, T = IDirect3DDevice9] C:/Boost/include/boost-1_38/boost/mem_fn.hpp:382: note: boost::_mfi::dm<R, T> boost::mem_fn(R T::*) [with R = ULONG ()(), T = IDirect3DDevice9] Many thanks, Conrad

2 3

Options for --build-type
by Juan D Guzman 07 Mar '09

07 Mar '09

I'm building boost and was wondering other than --build-type=complete what are the other options. Disk usage approaches 40 gigs with the complete option.

2 2

Boost.python - How to export shared_ptr<vector<shared_ptr<string> > >?
by blp330 07 Mar '09

07 Mar '09

Hi, I have a function that returns type boost::shared_ptr<std::vector<boost::shared_ptr<std::string> > >, I have registered that: // boost::shared_ptr<std::string> -> PyString Converter. struct StringPointerToPyString { static ::PyObject* convert( ::boost::shared_ptr<::std::string> const& p_str ){ return ::PyString_FromStringAndSize( p_str->data(), p_str->size() ); } }; bp::class_< std::vector<StringPtr> > ("vector_StringPtr") .def (bp::vector_indexing_suite< std::vector<StringPtr> >()); bp::register_ptr_to_python< boost::shared_ptr< std::vector<StringPtr> > >(); It works fine but when I try to access the returned vector, I got error: >>> v = my_function() >>> v[0] TypeError: No Python class registered for C++ class class boost::shared_ptr<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > I tried to add bp::register_ptr_to_python< boost::shared_ptr< std::string > >(); But still not work. How can I make it work? Thanks you very much. -- View this message in context: http://www.nabble.com/Boost.python---How-to-export-shared_ptr%3Cvector%3Csh… Sent from the Boost - Users mailing list archive at Nabble.com.

1 0

Portable way of getting process directory, temp directory?
by Archie14 07 Mar '09

07 Mar '09

Is there a boost library to get process directory, or temp directory?

1 0

MPL - what rule am I breaking?
by Noah Roberts 06 Mar '09

06 Mar '09

Version A (works): template < typename FIELD > struct rec { typename FIELD::type value; rec() : value() {} protected: typename FIELD::type & ref() { return value; } }; template < typename VEC > struct generate_record : boost::mpl::inherit_linearly< VEC, boost::mpl::inherit< rec<pl::_2>, pl::_1> >::type { typedef VEC fields; }; Version B (fails): template < typename FIELD, bool Writable > struct rec { typename FIELD::type value; // failure point rec() : value() {} protected: typename FIELD::type & ref() { return value; } }; template < typename VEC > struct generate_record : boost::mpl::inherit_linearly< VEC, boost::mpl::inherit< rec<pl::_2, true>, pl::_1> >::type { typedef VEC fields; }; The error I get: 'type' : is not a member of 'boost::mpl::arg<2>' I think I know what's going on, rec<pl::_2, true> is getting immediately instantiated while rec<pl::_2> does not. What I don't know is why or how to fix it. Thanks.

2 2

proto: analytical-only math functions
by Hicham Mouline 06 Mar '09

06 Mar '09

Hello, There are a few posts these days about generic libraries for math derivation of math functions, analytically or numerically. My objective is to start simple with analytical functions, and to expand the result gradually. I have used proto to define terminals : 1. 1D constants 2. 1D variables 3. 1D basic functions <double (double)> ( c++03 cmath + boost::math ) 4. user-defined functions ( 0 or more dimensions ) HEADER struct constant_tag {}; typedef proto::terminal< constant_tag >::type constant; struct variable_tag {}; typedef proto::terminal< variable_tag >::type variable; template < double (*basic_function_ptr)(double) > struct basic_function_tag { typedef double result_type; result_type operator()(double d) const { return basic_function_ptr(d); } }; proto::terminal< basic_function_tag<std::log> >::type const log = {{}}; // 1 example, I have one of these for each function template <size_t dim =1> struct function_tag {}; template <size_t dim> struct function : proto::terminal< function_tag<1> >::type {}; USER CODE ------------------ constant c; variable x,y,z,t,u,v; function<0> h; function<1> f; function<5> g; My grammar will be very simple for a start. All I want to allow are statements like: 1.variable = constant(proto terminal) or literal (actual number, does it have to be proto terminal), for e.g. x = 5; 2. function definition with the = operator. The LHS of the operator can one of: h = h() = f(x) = g(x,y,z,t,u) = // All arguments of f should be "variable"s only and they can't be repeated, and they have to match the dimension my LHS grammar looks like: template <size_t dim> struct function_def_lhs_grammar : proto::function< function_tag<dim>, proto::vararg< proto::terminal< variable_tag > > > {}; template <> struct function_def_lhs_grammar<0> : proto::or_< proto::terminal< function_tag<0> >, proto::function< function_tag<0>, proto::vararg< proto::terminal< variable_tag > > > {}; But vararg is not what I want at all: I want to have 0 variables (nothing) for the 0-dim function in the proto::function case, And I want to have exactly dim variables in the dim>0 proto::function case. Is it possible to "math-define" the function at the same time of the function<> object definition (in c++ terms) and have the dimension deducted, like: function f(x,y,z) = x+y+z ; The next step will be to worry about the RHS which is the much more complicated bit, regards,

4 18

boost CPDAG help
by montassar benmessaoud 06 Mar '09

06 Mar '09

Hi, I would know if it is possible to use Boost to code a partially directed graph (Completely partially DAG) CPDAG. I have a look to the class adjacency_matrix but it is used only for completely directed graph or completely undirected graph. Would you please let me know if there is any way to manipulate partially directed graph with Boost. very thank you in advance _________________________________________________________________ Découvrez Windows Live Spaces et créez votre site Web perso en quelques clics ! http://spaces.live.com/signup.aspx

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[regex] How to use ICU debug libs when building regex with bjam (win32)
by Christian Hoffmann 06 Mar '09

06 Mar '09

Hi, In our debug builds, we build ICU in debug mode and it creates libraries with a "d" suffix (e.g. icuucd.lib). When I build boost regex now with: bjam.exe -sICU_PATH=<somepath>\icu -d+2 --debug-configuration toolset=msvc-9.0 threading=multi python-debugging=on link=shared variant=debug --without-mpi libs\regex\build it doesn't find the ICU libs and the linker complains. I then tried to give ICU_LINK (e.g. like this): bjam.exe -sICU_PATH=<somepath>\icu -sICU_LINK=icuucd.lib toolset=msvc-9.0 threading=multi python-debugging=on link=shared variant=debug --without-mpi libs\regex\build but it doesn't add the icuucd.lib to the linker file "bin.v2\libs\regex\build\msvc-9.0\debug\python-debugging-on\threading-multi\boost_regex-vc90-mt-gyd-1_38.dll.rsp" and I get unresolved symbols. Any idea how to do this without hacking the Jamfile.v2? Thanks a lot, Chris

1 0

choosing from a list of types based on a runtime value
by Hicham Mouline 06 Mar '09

06 Mar '09

say I have a template <typename Tag> // Tag should be 1 in 10 types struct S { ... }; in a function f(int Tag) // Tag is computed here at runtime { switch(Tag) { case 0: // use S<Tag0> ... case 9: // use S<Tag9> } } Is fusion the lib to help with problems like this, so I don't need to write the full switch case for all types, regards,

1 0

boost:interprocess sizeof(list<Type>::Node)
by waterbed 06 Mar '09

06 Mar '09

Hello, My problem is really basic : I have N objects of type Type to store in a boost::interprocess::list<Type>. The question is easy : How many bytes should I provide to the managed_mapped_file, in order it fits correctly? So, I supposed I had to store (let's assume bi = boost::interprocess): + The list allocator : sizeof( bi::allocator<Type, bi::managed_shared_memory::segment_manager> ) + The struct of the list itself : sizeof( bi::list<Type, bi::allocator<Type, ...> > ) + The N nodes of the list containing each one of my objects : sizeof( bi::list<Type, ...>::Node) First issue : bi::list<Type, ...>::Node is private. Fine, I changed it as public. Second issue : sizeof(bi::list<Type, ...>::Node) was not enough, actually I can't add N objets, I was just able to allocate (N - x) objets Third issue : so I tried to fix the value of x, but x is not constant, it changes according to N... Thus I think, I made a mistake but where? or I forgot something but what? Thank for your help and your advises. -- View this message in context: http://www.nabble.com/boost%3Ainterprocess-sizeof%28list%3CType%3E%3A%3ANod… Sent from the Boost - Users mailing list archive at Nabble.com.

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Interprocess windows_shared_memory 1.35
by Joy Vincent 06 Mar '09

06 Mar '09

I am attempting to create a windows_shared_memory object for a large file that exists using Boost 1.35. I have attempted to create it 2 ways: interprocess::windows_shared_memory *wsm = new interprocess::windows_shared_memory(interprocess::open_or_create, fileName.c_str(), interprocess::read_only,fileSize); I am getting an interprocess exception that the system cannot find the path specified. (boost::error_info is 'not_found_error') The file is valid as previous boost::filesystem calls can successfully create a path object, append a file name and get the file size. The file is large (110MB) so I also attempted a size of 1000 -- same exception. After stepping through some code, it seems I am getting the exception in win32_api.hpp when the CreateFileMappingA is called. Has anyone had issues with windows_shared_memory objects in the 1.35 version? Thanks. Joy

2 1

tcp::acceptor works differently on windows than linux.
by Michael Dehmlow 06 Mar '09

06 Mar '09

I'm writting a multiplatform app which uses a tcp::acceptor. Thread one does: { std::cout<<"Oh but I interupted: "<<std::endl; _myTCPAcceptor->close(); std::cout<<"Done interupting "<<std::endl; } std::cout<<"About to join "<<std::endl; _myAcceptorThread->join(); std::cout<<"Join complete"<<std::endl; Thread two does: { boost::system::error_code ec; boost::asio::socket_base::non_blocking_io command(false); _mySocket.io_control(command,ec); boost::system::error_code ec1; std::cout<<"About to accept "<<std::endl; _myTCPAcceptor->accept(_mySocket,ec1); std::cout<<boost::system::system_error(ec1).what()<<std::endl; std::cout<<"done with the accept"<<std::endl; } Output is: Linux Redhat: About to accept Oh but I interupted: Done interupting About to join ... blocks forever Windows XP: About to accept Oh but I interupted: Done interupting About to join A blocking operation was interrupted by a call to WSACancelBlockingCall done with the accept Join complete on windows xp pro the call populates error code with: A blocking operation was interrupted by a call to WSACancelBlockingCall Any solutions other wise I gotta go to pocking the acceptor with another socket connection :(. -- View this message in context: http://www.nabble.com/tcp%3A%3Aacceptor-works-differently-on-windows-than-l… Sent from the Boost - Users mailing list archive at Nabble.com.

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