August 2010 - Boost-users - lists.preview.boost.org

[MultiIndex] is it possible to create multi-key key-extractors?
by Mostafa 09 Aug '10

09 Aug '10

Hi, For the following struct: struct Flower { int type; string name; std::list<string> aliases; }; I want to create a multiindexed container that indexes Flower objects by type, name, and aliases, where aliases is some iteratable collection of strings. I just don't know if it's possible to create a multi-key key-extractor for aliases. So far I've come up with the following: typedef boost::multi_index_container< Flower, indexed_by< ordered_unique< member<Flower, int, &Flower::type> >, ordered_unique< member<Flower, string, &Flower::name> >, ordered_unique< //What goes here ... ? > > > FlowerMngr; Thanks, -Mostafa

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[tuples, multi-index] tuples::get as key extractor
by Igor R 09 Aug '10

09 Aug '10

Hello, Consider the following types: typedef tuple<std::string, int> Item; typedef multi_index_container< Item, indexed_by< ordered_non_unique<global_fun<const Item &, int, &tuples::get<1> > > > > Items; The above types don't compile (MSVC10) because of &tuples::get<1>: C2440: 'specialization' : cannot convert from 'overloaded-function' to 'int (__cdecl *)(boost::tuples::tuple<T0,T1> &)' It seems there're several overloaded function templates "tuples::get"... So, what's the correct type of the appropriate function? Or -- is there a more "robust" way to extract the key (without defining explicit function-object)? Thanks!

2 2

Documentation of older releases?
by Robert Jones 08 Aug '10

08 Aug '10

Let me admit up-front that this ignorance is probably my own fault as I've not been paying attention lately, but I see the main documentation list now only includes releases 1.42 & 1.43. Didn't this used to include releases back to about 1.31 or something? Does this mean that documentation of older releases are no longer hosted on the website? Thx - Rob.

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Re: [Boost-users] VS2010 and /clr: fatal error C1001: An internal error has occurred in the compiler
by Soren Dreijer 08 Aug '10

08 Aug '10

> Probably because that causes some assembly to be emitted because of > the efficiency requirements of the mutex, and the CLR does not support > direct assembly. Either get out of the CLR, or do not use anything > that uses low assembly constructs (CLR has its own thread and mutex > classes anyway). Well, so I can't "just get out of the CLR". As I mentioned earlier, this is a managed C++ project that exposes native functionality from other libraries to .NET. That is, I *have* to include the native headers, which in turn include boost. This worked fine in VS2008, too, so it sounds more like a regression in the compiler I think. Also, when compiling for x86, I see the following warning but everything still compiles (the warning is to be expected, as you say yourself): 4>boost_1_43_0_sdk\include\boost\thread\win32\basic_timed_mutex.hpp(160) : warning C4793: 'boost::detail::basic_timed_mutex::unlock' : function compiled as native : 4> Found an intrinsic not supported in managed code / Soren

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[variant] GNU MP Bignum (gmp) compatibility
by Sven Heithecker 08 Aug '10

08 Aug '10

Hello ! The following code compiles correctly and does what I want: #include <iostream> #include <string> #include <boost/variant.hpp> #include <gmpxx.h> using namespace std; typedef boost::variant<int,string> var_t; // COMMENT //typedef boost::variant<mpz_class,mpq_class> var_t; // UNCOMMENT class add : public boost::static_visitor<var_t> { public: template<typename T> var_t operator()(const T &op1, const T &op2) const { return(op1+op2); } template<typename T1, typename T2> var_t operator()(const T1 &op1, const T2 &op2) const { throw; // just for demonstration } }; int main() { var_t v0(2); var_t v1(3); var_t r0 = apply_visitor(add(),v0,v1); cout << r0 << endl; // "5" var_t v10("Hello, "); var_t v11("World !"); var_t r10 = apply_visitor(add(),v10,v11); cout << r10 << endl; // "Hello, World !" var_t error= apply_visitor(add(),v0,v10); // try to add "2" and "Hello, " cout << error << endl; // never executed } However, if I change to the "gmp" Variant typedef indicated above, compilation fails with an error in the boost::variant sources. I tried to extract the core error message: [...] /usr/include/boost/variant/variant.hpp:1293: error: call of overloaded ‘initialize(void*, const char [8])’ is ambiguous /usr/include/boost/variant/detail/initializer.hpp:89: note: candidates are: static int boost::detail::variant::make_initializer_node::apply<BaseIndexPair, Iterator>::initializer_node::initialize(void*, typename boost::call_traits<typename boost::unwrap_recursive<typename boost::mpl::deref<Iterator>::type>::type>::param_type) [with BaseIndexPair = boost::mpl::pair<boost::detail::variant::make_initializer_node::apply<boost: :mpl::pair<boost::detail::variant::initializer_root, mpl_::int_<0> >, boost::mpl::l_iter<boost::mpl::list2<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_expr<__mpq_struct [1], __mpq_struct [1]> > > >::initializer_node, mpl_::int_<1> >, Iterator = boost::mpl::l_iter<boost::mpl::list1<__gmp_expr<__mpq_struct [1], __mpq_struct [1]> > >] <near match> /usr/include/boost/variant/detail/initializer.hpp:89: note: static int boost::detail::variant::make_initializer_node::apply<BaseIndexPair, Iterator>::initializer_node::initialize(void*, typename boost::call_traits<typename boost::unwrap_recursive<typename boost::mpl::deref<Iterator>::type>::type>::param_type) [with BaseIndexPair = boost::mpl::pair<boost::detail::variant::initializer_root, mpl_::int_<0> >, Iterator = boost::mpl::l_iter<boost::mpl::list2<__gmp_expr<__mpz_struct [1], __mpz_struct [1]>, __gmp_expr<__mpq_struct [1], __mpq_struct [1]> > >] <near match> [...] After having a look at the gmp documentation, especially the "12.6 C++ Interface Limitations" chapter, I think this has something to do with the various conversion functions between the gmp classes and the way how the gmp classes are implemented. Is there any (easy?) way to make boost::variant and gmp compatible ? Regards, Sven -- Sven Heithecker GPG Fingerprint: 527F 06C2 BF51 96CE DFF7 CC89 1A6B DFD5 BEC2 02A6

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Any functions for URL parsing?
by Timothy Madden 08 Aug '10

08 Aug '10

Hello Is there a library in boost to parse an URL ? Like to extract the protocol, username, password, hostname, port, resource, query parametrs, fragment identifiers ? I can see some things about it using the on-site search, but the pages in the results are not accessible and I can find nothing conclusive. Thank you, Timothy Madden

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VS2010 and /clr: fatal error C1001: An internal error has occurred in the compiler
by Soren Dreijer 08 Aug '10

08 Aug '10

I recently switched our product over to VS2010 from VS2008. Our solution consists of several native C++ projects and some managed C++ projects that link to those native projects. The managed C++ projects are compiled with the /clr flag, of course. However, when compiling for x64, one of the files that includes one of the boost mutex headers causes the compiler to spit out the following error: boost_1_43_0_sdk\include\boost\thread\win32\basic_timed_mutex.hpp(158): fatal error C1001: An internal error has occurred in the compiler I've traced down the problem to the following piece of code in basic_timed_mutex.hpp: void unlock() { long const offset=lock_flag_value; // If I comment out this line, compilation works long const old_count=BOOST_INTERLOCKED_EXCHANGE_ADD(&active_count,lock_flag_value); if(!(old_count&event_set_flag_value) && (old_count>offset)) { if(!win32::interlocked_bit_test_and_set(&active_count,event_set_flag_bit )) { win32::SetEvent(get_event()); } } } It would see the BOOST_INTERLOCKED_EXCHANGE_ADD macro causes the compiler to barf. Does anybody have any ideas on why this is, or how to fix it? Cheers, Soren

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[Serialization] Failed to Link "A Very Simple Case"
by Hossein Haeri 07 Aug '10

07 Aug '10

Dear all, Trying the first example of the Boost.Serialization (A Very Simple Case): http://boost-sandbox.sourceforge.net/boost_1_43_0/libs/serialization/doc/tu… I get the error messages in the P.S. section with GCC 4.4.0 MinGW WinXP. Any ideas? TIA, --Hossein P.S. Compiling: main.cpp Linking console executable: bin\Debug\Serial.exe obj\Debug\main.o: In function `text_oarchive': /archive/text_oarchive.hpp:92: undefined reference to `boost::archive::text_oarchive_impl<boost::archive::text_oarchive>::text_oarchive_impl(std::ostream&, unsigned int)' obj\Debug\main.o: In function `text_iarchive': /archive/text_iarchive.hpp:129: undefined reference to `boost::archive::text_iarchive_impl<boost::archive::text_iarchive>::text_iarchive_impl(std::istream&, unsigned int)' /archive/text_iarchive.hpp:129: undefined reference to `boost::archive::detail::shared_ptr_helper::shared_ptr_helper()' obj\Debug\main.o: In function `~text_iarchive': /archive/text_iarchive.hpp:131: undefined reference to `boost::archive::detail::shared_ptr_helper::~shared_ptr_helper()' /archive/text_iarchive.hpp:131: undefined reference to `boost::archive::detail::shared_ptr_helper::~shared_ptr_helper()' obj\Debug\main.o: In function `~text_oarchive_impl': /archive/text_oarchive.hpp:77: undefined reference to `boost::archive::basic_text_oprimitive<std::ostream>::~basic_text_oprimitive()' /archive/text_oarchive.hpp:77: undefined reference to `boost::archive::basic_text_oprimitive<std::ostream>::~basic_text_oprimitive()' /archive/text_oarchive.hpp:77: undefined reference to `boost::archive::basic_text_oprimitive<std::ostream>::~basic_text_oprimitive()' /archive/text_oarchive.hpp:77: undefined reference to `boost::archive::basic_text_oprimitive<std::ostream>::~basic_text_oprimitive()' /archive/text_oarchive.hpp:77: undefined reference to `boost::archive::basic_text_oprimitive<std::ostream>::~basic_text_oprimitive()' obj\Debug\main.o: /archive/text_oarchive.hpp:77: more undefined references to `boost::archive::basic_text_oprimitive<std::ostream>::~basic_text_oprimitive()' follow obj\Debug\main.o: In function `~text_iarchive_impl': /archive/text_iarchive.hpp:80: undefined reference to `boost::archive::basic_text_iprimitive<std::istream>::~basic_text_iprimitive()' /archive/text_iarchive.hpp:80: undefined reference to `boost::archive::basic_text_iprimitive<std::istream>::~basic_text_iprimitive()' /archive/text_iarchive.hpp:80: undefined reference to `boost::archive::basic_text_iprimitive<std::istream>::~basic_text_iprimitive()' /archive/text_iarchive.hpp:80: undefined reference to `boost::archive::basic_text_iprimitive<std::istream>::~basic_text_iprimitive()' /archive/text_iarchive.hpp:80: undefined reference to `boost::archive::basic_text_iprimitive<std::istream>::~basic_text_iprimitive()' obj\Debug\main.o: /archive/text_iarchive.hpp:80: more undefined references to `boost::archive::basic_text_iprimitive<std::istream>::~basic_text_iprimitive()' follow obj\Debug\main.o: In function `~common_oarchive': archive/detail/common_oarchive.hpp:38: undefined reference to `boost::archive::detail::basic_oarchive::~basic_oarchive()' /archive/detail/common_oarchive.hpp:38: undefined reference to `boost::archive::detail::basic_oarchive::~basic_oarchive()' /archive/detail/common_oarchive.hpp:38: undefined reference to `boost::archive::detail::basic_oarchive::~basic_oarchive()' obj\Debug\main.o: In function `~common_iarchive': /archive/detail/common_iarchive.hpp:43: undefined reference to `boost::archive::detail::basic_iarchive::~basic_iarchive()' /archive/detail/common_iarchive.hpp:43: undefined reference to `boost::archive::detail::basic_iarchive::~basic_iarchive()' /archive/detail/common_iarchive.hpp:43: undefined reference to `boost::archive::detail::basic_iarchive::~basic_iarchive()' obj\Debug\main.o: /archive/detail/oserializer.hpp:253: undefined reference to `boost::archive::detail::basic_oarchive::save_object(void const*, boost::archive::detail::basic_oserializer const&)' obj\Debug\main.o: /archive/detail/iserializer.hpp:381: undefined reference to `boost::archive::detail::basic_iarchive::load_object(void*, boost::archive::detail::basic_iserializer const&)' obj\Debug\main.o: In function `oserializer': /archive/detail/oserializer.hpp:112: undefined reference to `boost::archive::detail::basic_oserializer::basic_oserializer(boost::serialization::extended_type_info const&)' obj\Debug\main.o: In function `~oserializer': /archive/detail/oserializer.hpp:133: undefined reference to `boost::archive::detail::basic_oserializer::~basic_oserializer()' /archive/detail/oserializer.hpp:133: undefined reference to `boost::archive::detail::basic_oserializer::~basic_oserializer()' /archive/detail/oserializer.hpp:133: undefined reference to `boost::archive::detail::basic_oserializer::~basic_oserializer()' obj\Debug\main.o: In function `iserializer': /archive/detail/iserializer.hpp:133: undefined reference to `boost::archive::detail::basic_iserializer::basic_iserializer(boost::serialization::extended_type_info const&)' obj\Debug\main.o: In function `~iserializer': /archive/detail/iserializer.hpp:158: undefined reference to `boost::archive::detail::basic_iserializer::~basic_iserializer()' /archive/detail/iserializer.hpp:158: undefined reference to `boost::archive::detail::basic_iserializer::~basic_iserializer()' /archive/detail/iserializer.hpp:158: undefined reference to `boost::archive::detail::basic_iserializer::~basic_iserializer()' obj\Debug\main.o: In function `extended_type_info_typeid': /serialization/extended_type_info_typeid.hpp:86: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::extended_type_info_typeid_0(char const*)' /serialization/extended_type_info_typeid.hpp:88: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::type_register(std::type_info const&)' /serialization/extended_type_info_typeid.hpp:89: undefined reference to `boost::serialization::extended_type_info::key_register() const' /serialization/extended_type_info_typeid.hpp:89: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' obj\Debug\main.o: In function `~extended_type_info_typeid': /serialization/extended_type_info_typeid.hpp:92: undefined reference to `boost::serialization::extended_type_info::key_unregister() const' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::type_unregister()' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' /serialization/extended_type_info_typeid.hpp:92: undefined reference to `boost::serialization::extended_type_info::key_unregister() const' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::type_unregister()' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' /serialization/extended_type_info_typeid.hpp:92: undefined reference to `boost::serialization::extended_type_info::key_unregister() const' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::type_unregister()' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' /serialization/extended_type_info_typeid.hpp:93: undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0()' obj\Debug\main.o:main.cpp:(.rdata$_ZTVN5boost13serialization6detail17singleton_wrapperINS0_25extended_type_info_typeidI12gps_positionEEEE[vtable for boost::serialization::detail::singleton_wrapper<boost::serialization::extended_type_info_typeid<gps_position> >]+0x8): undefined reference to `boost::serialization::typeid_system::extended_type_info_typeid_0::is_less_than(boost::serialization::extended_type_info const&) const' Process terminated with status 1 (0 minutes, 18 seconds) 50 errors, 0 warnings

3 3

composite iterator_adaptor
by Olaf Peter 07 Aug '10

07 Aug '10

Hello, the snippet below doesn't compile due to a missing constructor. Changes to const std::string doesn't compile too. Is this intentionally or misuse it? How to fix it? Here the error from from clang: /opt/clang/bin/clang++ -I /home/olaf/Projects/programming/cpp/boost/trunk/ iterator_composite.cpp -o iterator_composite iterator_composite.cpp:70:36: error: no matching constructor for initialization of 'client::default_input_iterator' (aka 'boost::filter_iterator<detail::equal_to<typename basic_iterator_type::value_type>, basic_iterator_type>') client::default_input_iterator first( rng.begin() ); ^ ~~~~~~~~~~~ Thanks, Olaf

1 1

[serialization] Undefined reference to archive_serializer_map when creating my own archive type
by Maxime van Noppen 07 Aug '10

07 Aug '10

Hi, I'm trying to create my own archive type and I'm struggling with this error message : > $ g++ test.cc -lboost_serialization > /tmp/cc5aW7rV.o: In function `boost::archive::detail::pointer_oserializer<sql_oarchive, internal::unit>::pointer_oserializer()': > test.cc:(.text._ZN5boost7archive6detail19pointer_oserializerI12sql_oarchiveN8internal4unitEEC2Ev[_ZN5boost7archive6detail19pointer_oserializerI12sql_oarchiveN8internal4unitEEC5Ev]+0x4f): undefined reference to `boost::archive::detail::archive_serializer_map<sql_oarchive>::insert(boost::archive::detail::basic_serializer const*)' > /tmp/cc5aW7rV.o: In function `boost::archive::detail::pointer_oserializer<sql_oarchive, internal::unit>::~pointer_oserializer()': > test.cc:(.text._ZN5boost7archive6detail19pointer_oserializerI12sql_oarchiveN8internal4unitEED2Ev[_ZN5boost7archive6detail19pointer_oserializerI12sql_oarchiveN8internal4unitEED5Ev]+0x24): undefined reference to `boost::archive::detail::archive_serializer_map<sql_oarchive>::erase(boost::archive::detail::basic_serializer const*)' I can't find the relevant part of the documentation which talks about it. Adding this piece of code makes the code compile but it doesn't work: > namespace boost { namespace archive { namespace detail { > template <> > bool archive_serializer_map<sql_oarchive>::insert(boost::archive::detail::basic_serializer const*) > { > // ?? > } > > template <> > void archive_serializer_map<sql_oarchive>::erase(boost::archive::detail::basic_serializer const*) > { > // ?? > } > } } } I'm using boost 1.43 on g++ 4.5 on linux 64bits. The code is attached. What am I missing ? Thanks, -- Maxime

2 2

cannot find namespace boost?
by Andreas Ronnquist 07 Aug '10

07 Aug '10

Hi! When compiling my project using Boost 1.43 and Visual C++ 2010 Express I get the following: error C2653: 'boost' : is not a class or namespace name error C2143: syntax error : missing ';' before '<' error C4430: missing type specifier - int assumed. Note: C++ does not support default-int error C2238: unexpected token(s) preceding ';' where I am using boost::shared_ptr<Some_Class> Is this some simple newb mistake I am making? This is on a cmake-based project, which works just fine with boost 1.37, but there on the other hand I get a whole lot of warnings like this: "Unknown compiler version - please run the configure tests and report the results" which I interpret as Visual C++ 2010 being too new to be recognized by the older version of boost. Is this some major change in boost that I have missed? I am just using this shared_ptr, and I believe that it is only header-based, and I don't need to compile boost to use it? Is that wrong? best regards -- Andreas Ronnquist <gusnan(a)gusnan.se>

2 2

Trouble building 32bit version
by Noah Roberts 06 Aug '10

06 Aug '10

I have a 64bit Linux system and I need to build boost for 32bit in order to link to this library I have to use. Trouble is that I keep getting this error when I try to link to any boost library: nroberts@Adad:~$ g++ test.cpp -m32 -L/home/nroberts/boost-x86/lib -lboost_thread-gcc44-mt /home/nroberts/boost-x86/lib/libboost_thread-gcc44-mt.so: undefined reference to `__sync_fetch_and_add_4' collect2: ld returned 1 exit status test.cpp just contains an empty main(). I've tried google and arrived at various places: http://stackoverflow.com/questions/130740/link-error-when-compiling-gcc-ato… http://old.nabble.com/compiling-32-bit-boost-libraries-on-a-64-bit-system--… Among others. I'm trying to build version 1.38. Here's my last attempt at supplying bjam with the correct parameters: bjam architecture=x86 address-model=32 toolset=gcc instruction-set=i686 stage It's funny though, even at the link in the reply held at nabble.com the documentation doesn't seem to have anything on any of these parameters. They don't appear in the bjam --help output either. So I seem to be kind of screwed in figuring this out myself. I'm just trying to guess until I get it but I'm out of ideas. What do I need to do? Thanks.

2 2

[assign] Default list_of() behavior
by Ryan McConnehey 06 Aug '10

06 Aug '10

None of the examples, for list_of, show the use of the default list_of constructor. When I tried to use list_of() for a vector I expected a blank vector without any elements. What I found was a vector that had one element of the vector type. This element had a default value. Is this the correct behavior? t_ucvector temp( list_of() ); //The temp vector has one element of type unsigned char with a default value of zero. There is a structure with a couple of constant std::vectors that are being initializing in the constructor's preamble. I've included the structure with the working version of the code. I've included the desired creation of the std::vector, but because of list_of() is not working. Thank you for your help. Ryan struct SplitterFixture { public: SplitterFixture(void) : header(list_of(2)(2)) , messageA(list_of('a').repeat(2,'a')) , input(t_boostVector(new t_ucvector(list_of(2)(2).range(messageA)))) //Desired implementation. //: header(list_of().repeat(2,'2')) //, messageA(list_of().repeat(3,'a')) //, input(t_boostVector(new t_ucvector(list_of().range(header).range(messageA)))) {} public: typedef std::vector<unsigned char> t_ucvector; typedef boost::shared_ptr<t_ucvector> t_boostVector; public: t_ucvector const header; t_ucvector const messageA; t_boostVector const input; };

2 6

[preprocessor] removing parentheses
by Edward Diener 06 Aug '10

06 Aug '10

I have a single macro parameter which allows its passed value to contain commas. Therefore the user of the macro needs parentheses around the parameter if it contains one or more commas ( to does not have to ). When processing this parameter in a macro I would like to remove the outer parentheses if they are there before passing the value on for further processing. Is there a way to do this using some preprocessor library macro ?

4 12

x86_64 needs -fPIC issue, anyone successful?
by Bill Freeman 06 Aug '10

06 Aug '10

I'm trying to build a library (librets) that links against boost libraries in order to build a shared library (as part of a SWIG based python extension). The target machine, as well as all of my development machines at the moment, are the x86_64 architecture. I've done most of my work on an ubuntu 9.04 box. I've tried with the boost packages available from the ubuntu repositores, and I have also, in case those packages were miss-built, successfully built (and tried the examples, successfully) boost 1.43.0 from source, getting no errors from ./bjam install . In either case, I wind up with the following error when trying to build librets: /usr/bin/ld: /home/f/Desktop/rets/lib/libboost_system.a(error_code.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC Googling around, this seems to be a problem only seen on x86_64 machines. (Why one doesn't need to make position independent code for the 32 bit machines, if that is in fact true, is beyond me.) So, I'm wondering if someone else with this issue has already figured out how to get around it. Or, if not, can someone tell me how to tell the bjam stuff to apply -fPIC so that I can try that. (I'm an old timer. If it were make based, I could hack it myself, but I'm hesitant to learn all about the boost build system for what is for me a side task.) Or if someone knows that the -fPIC won't help, or has alternate suggestions, please let me know. TIA, Bill

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Re: [Boost-users] x86_64 needs -fPIC issue, anyone successful?
by Bill Freeman 06 Aug '10

06 Aug '10

Bill Freeman wrote: > I'm trying to build a library (librets) that links > against boost libraries in order to build a shared > library (as part of a SWIG based python extension). ... > /usr/bin/ld: /home/f/Desktop/rets/lib/libboost_system.a(error_code.o): > relocation R_X86_64_32 against `.rodata.str1.1' can not be used when > making a shared object; recompile with -fPIC > ... > Or, if not, can someone tell me how to tell the bjam > stuff to apply -fPIC so that I can try that. ... Neal Becker wrote: --------------------------------------- You should have a libboost_system.so to link against (which should have, and probably was, built with -fpic). Either: 1) You don't have libboost_system.so where linker is looking or 2) Usually these are setup as symlinks, libboost_system.so -> libboost_system.so.x.y.z You could be missing the symlink, or it could point to the wrong place. ------------------------------------------ The so files are there. But librets explicitly wants the .a, presumably because it wants to bind in the actual code, rather than the stub. While python extension libraries themselves need to be shared, so that they can be loaded dynamicly, at run time, the librets folks apparently don't want to depend on the boost shared libraries being installed on the target system. While the wisdom of that choice is debatable, librets is simply something I want to use (from python). I'm not involved in its development community. I'm just looking for the easy way out. Getting the boost static's built PIC seems worth trying. Bill

1 0

[Boost.Log] Adding indentation to log messages written via BOOST_LOG_TRIVIAL
by Torri, Stephen CIV NSWCDD, W15 06 Aug '10

06 Aug '10

Symptom: Adding indentation to log messages sometimes results in no indentation being added to incoming log messages. Environment: Fedora 13 Boost version: trunk (1.44 prior to beta release) Boost.Log version: 1.0 Compiler: GCC 4.4.4 Research: As I read the documentation I see that the Boost.Log talks about a non-empty log record is considered to be tied to the current thread. Since my program is single threaded I did not consider my initial attempt of using inline functions in a separate namespace with a namespace variable to keep track of indentation level to be a problem. My first attempt looked like: namespace project { namespace log { static boost::uint32_t indent_level = 0; #ifdef DEBUG #include <boost/log/trivial.hpp> #include <boost/format.hpp> /*! * \brief Record the entering of a function * \param function String name of the function being entered */ template <typename Function> inline void record_enter ( Function const& function ) { BOOST_LOG_TRIVIAL(trace) << std::string ( indent_level, ' ' ) << boost::str ( boost::format ( "(Enter) %1%" ) % function ); indent_level += 2; } /*! * \brief Record the exiting from a function * \param function String name of the function being exited */ template <typename Function> inline void record_exit ( Function const& function ) { BOOST_LOG_TRIVIAL(trace) << std::string ( indent_level, ' ' ) << boost::str ( boost::format ( "(Exit) %1%" ) % function ); indent_level -= 2; } /*! * \brief Record a message with one input * \param format_string String written in the Boost.Format style to be used to parse input * \param t1 Input value */ template <typename Format, typename T1> inline void record_debug ( Format const& format_string, T1 const& t1 ) { BOOST_LOG_TRIVIAL(debug) << std::string ( indent_level, ' ' ) << boost::str ( boost::format ( format_string ) % t1 ); } #else template <typename Function> inline void record_enter ( Function const& ) {} template <typename Function> inline void record_exit ( Function const& ) {} template <typename Format, typename T1> inline void record_debug ( Format const&, T1 const& ) {} } // namespace log } // namespace project #endif When I run the code I see that the indentation is tracking by steps of 2 as I go into functions and reduced by 2 as I exit. There are exceptions where the indentation is 0 for a few lines or so then resumes the correct level. The problem I think is that there are more than one thread handling what I send to Boost.Log via BOOST_LOG_TRIVIAL. It as if there is one thread that has the correct level and another thread that has indent_level set to 0. For example: 1 [2010-Aug-06 12:03:15.329757] [0x88bb070] [trace] (Enter) void Test::functionA() 2 [2010-Aug-06 12:03:15.330867] [0x88bb070] [debug] Function A: do something 3 [2010-Aug-06 12:03:15.330989] [0x88bb070] [trace] (Enter) double Value::CalcX() 4 [2010-Aug-06 12:03:15.331124] [0x88bb070] [debug] X: 5 5 [2010-Aug-06 12:03:15.331188] [0x88bb070] [debug] Y: 10 6 [2010-Aug-06 12:03:15.331252] [0x88bb070] [trace] (Enter) double Value::CalcX() My intial guess is that I have Boost.Log compiled multi-threaded and I have a single-threaded solution. Is there a way to track which thread was recording a message in Boost.Log? I would like to confirm Boost.Log is using different threads to handle my messages. Also is there a better way to do what I want? Stephen Stephen Torri, PhD NAVAL SURFACE WARFARE CENTER DAHLGREN 17214 Ave B Suite 121 Dahlgren, Va. 22448 540-653-7055 I am not a contracting officer. I cannot modify or initiate contracts, nor do I have the authority to financially commit the government in any way.

1 0

Problem with enable_shared_from_this and shared_ptr
by Ryan McConnehey 06 Aug '10

06 Aug '10

If class "Pool" inherits from enable_shared_from_this the documentation says I'm able to do the following. shared_ptr<Pool> aPool = shared_from_this(); The minimal code I've included shows that this isn't happening. The code compiles but I get this error "tr1::bad_weak_ptr". What should I be doing different? Ryan [CODE] //C++ Includes #include <exception> #include <iostream> #include <vector> #include <algorithm> //Boost Includes #include <boost/shared_ptr.hpp> #include <boost/enable_shared_from_this.hpp> class pool : public boost::enable_shared_from_this< pool > { private: using boost::enable_shared_from_this< pool >::shared_from_this; public: boost::shared_ptr<int> get(void) { boost::shared_ptr<pool> aPool = shared_from_this(); //This is where the tr1::bad_weak_ptr happens. return boost::shared_ptr<int>(new int); } }; int main(int argc, char * argv[]) { try { pool * myPool = new pool; boost::shared_ptr<int> a = myPool->get(); } catch (std::exception & exception) { std::cout << exception.what() << std::endl; } return 0; }

6 13

Re: [Boost-users] x86_64 needs -fPIC issue, anyone successful? (Bill Freeman)
by Vial, Florent 06 Aug '10

06 Aug '10

Hi Bill, > /usr/bin/ld: /home/f/Desktop/rets/lib/libboost_system.a(error_code.o): > relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; > recompile with -fPIC > Or if someone knows that the -fPIC won't help, or has alternate suggestions, please let me know. -fPIC is usually used when building a shared object, so it should not be relevant as you are linking statically to the library. However, I had the same problem as you lately and it had not _anything_ to do with fPIC whatsoever. It was because i was compiling with gcc 3.4.5 and the flag -fvisibility=hidden and -fvisibility-inlines-hidden. Those 2 flags are correctly implemented from gcc 4.1 onwards i think. Maybe this helped, --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: Franz Kraus; Dr. Martin Prillmann A new star is born - ALEXA the most versatile digital camera system. Get all the latest information from arridigital.com and YouTube.

1 0

[program_options] unknown positional option
by Jeffrey Finkelstein 05 Aug '10

05 Aug '10

I'm having some trouble using the program_options library. Here is some code slightly modified from an example in the documentation for boost::program_options. <code> #include <iostream> #include <vector> #include <string> #include <boost/program_options/positional_options.hpp> #include <boost/program_options/variables_map.hpp> #include <boost/program_options/parsers.hpp> namespace po = boost::program_options; int main(int argc, char ** argv) { po::positional_options_description desc; desc.add("files", -1); std::cout << "Declared positional options." << std::endl; po::variables_map vm; po::store(po::command_line_parser(argc, argv).positional(desc).run(), vm); std::cout << "Stored command line arguments into vm." << std::endl; po::notify(vm); std::cout << "Notified vm that all args have been parsed" << std::endl; std::cout << " num files specified: " << vm.count("files") << std::endl; std::vector<std::string> files = vm["files"].as<std::vector<std::string> >(); for (unsigned int i = 0; i < files.size(); ++i) { std::cout << "file: " << files[i] << std::endl; } return 0; } </code> Linking with version 1.40, the above code, when run with the command line arguments "hello world", produces the following output: <shell> Declared positional options. terminate called after throwing an instance of 'boost::exception_detail::clone_\ impl<boost::exception_detail::error_info_injector<boost::program_options::unkno\ wn_option> >' what(): unknown option files Aborted </shell> Linking with version 1.43, the above code, when run with the command line arguments "hello world", produces the following output: <shell> Declared positional options. Segmentation fault </shell> Am I missing something about how to use positional arguments with this library? I am using Ubuntu 10.04 on x86. The 1.40 version of boost::program_options was installed through the repositories, I compiled the 1.43 version manually. Jeffrey

2 4

[1.44] Beta 1 available
by Beman Dawes 05 Aug '10

05 Aug '10

Boost release 1.43.0 beta 1 is now available from SourceForge See http://sourceforge.net/projects/boost/files/ There are two new libraries (Meta State Machine and Polygon) in this release, and lots of fixes and improvements to existing libraries. For details of what's in the release, see http://beta.boost.org/users/news/version_1_44_0. Note that the links to files on this web page are for the final release - use the SourceForge link above to get the beta files. Please download the beta, give it a try, and report any problems you encounter. Thanks, -- The Boost Release Team

3 3

Problem
by Luigi Seregni 05 Aug '10

05 Aug '10

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

1 0

ptr_vector sort usage
by archie14 05 Aug '10

05 Aug '10

I can't figure out how to use "sort" method in ptr_vector with the function object. Operator < should be defined, but for various reasons I cant define it in the class A, and I have to do the comparison between the A values using some other values. Example: class A { public: int i; }; class Compare { public: Compare (int i) : _i(i){} //this does not compile, but what's the proper way to define // function object for the sort method in ptr_vector? bool operator<(const A& v1, const A& v2) { return (v1.i > v2.i) &&(_i != 1); } private: int _i; }; ptr_vector<A> lst; Compare cmp(3); lst.sort(cmp);

4 7

boost MPI install error
by Jack Bryan 05 Aug '10

05 Aug '10

Dear All: I am trying to install boost on MPI clsuter with MPICH2. After ./bjam install, I compile a test program provided by boost.org . But I got errors: The program is :-----------------------------------------------------------------#include <iostream>#include <boost/mpi/environment.hpp>#include <boost/mpi/communicator.hpp> namespace mpi = boost::mpi; int main(int argc, char* argv[]){ mpi::environment env(argc, argv); mpi::communicator world; std::cout << "I am process " << world.rank() << " of " << world.size() << "." << std::endl; return 0;}-------------------------------------------------------------- Errors: ------------------------------------------------------------------mpic++ -o testp2p test_p2p.cpp -I/home/boost_2010_8_1/boost_1_43_0 -L/home/boost_2010_8_1/boost_1_43_0/stage/lib -lboost_mpi -lboost_serialization/usr/bin/ld: warning: liblam.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/usr/bin/ld: warning: liblamf77mpi.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/usr/bin/ld: warning: liblammpi++.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_short'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_unsigned'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Comm::mpi_comm_map'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `op_intercept'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_errors_return'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Intracomm::current_op'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_comm_world'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_unsigned_char'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_char'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Comm::mpi_err_map'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_group_empty'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_packed'collect2: ld returned 1 exit status ------------------------------------------------------------------- It seems that it needs LAM/MPI. But, the LAM/MPI has been installed: PATH=/home/openmpi_123/bin:/home/boost_2010_8_1/boost_1_43_0: ....... I used ./bjam --prefix=mypathand then ./bjam and then ./bjam installAny help is appreciated. Any help is appreciated. thanks Jack Aug. 3 2010

3 10

BGL: interrupting breadth_first_search() at a certain distance/predicate?
by Anders Wallin 05 Aug '10

05 Aug '10

Hi all, I have a graph where I start at a certain vertex and want to find the next undiscovered vertex at a maximum distance of 5 or so from the source vertex. Now I am running breadth_first_search() using a record_distances() visitor and I get the distances to all other vertices (say 10 000 of them) in my graph. This makes my algorithm slow, since I only need to know about vertices at a max distance of 5-6, not all of them. Is there a way of interrupting the algorithm when a certain predicate function supplied by me evaluates to true? (e.g. max distance reached, or a new interesting/valid vertex found, etc) thanks, AW

10 23

[distributions]: Inverse Gamma
by Thomas Mang 05 Aug '10

05 Aug '10

Hi, any plans of implementing the inverse gamma distribution as part of the distributions library ? What about multivariate (in particular the multivariate normal and t distributions and Wishart and Dirichlet ) ? thanks, Thomas

4 10

boost serialisation and enable_shared_from_this versus 1.43
by Avi Bahra 04 Aug '10

04 Aug '10

In 1.42, boost serialisation is broken when used with a class that is derived from enable_shared_from_this. This was supposed to fixed in the next release., but the online release notes for 1.43 make no mention of this. Does any one know if it made it into1.43 ? Best regards, Ta, Avi

2 1

Leandro Lima invited you to Dropbox
by Dropbox 04 Aug '10

04 Aug '10

Leandro Lima wants you to use Dropbox to sync and share files online and across computers. Get started here: http://www.dropbox.com/link/45.SygZEI0JRr.SygZEI0JRr/NjI3ODM0OTc5Nw - The Dropbox Team ____________________________________________________ To stop receiving invites from Dropbox, please go to http://www.dropbox.com/bl/207376696615/boost-users%40lists.boost.org

1 0

[GIL] Warnings when compiling items in channel_algorithms.hpp
by Nathan Crookston 04 Aug '10

04 Aug '10

All, While writing some image conversion code using scoped_channel_value I encountered several compiler warnings. The following minimal code demonstrates: Compiled with VC8, command line: "cl simple.cpp /Iboost /W3 /EHsc" ////// BEGIN CODE ///////////////////////////// #include "boost/gil/gil_all.hpp" namespace boost { namespace gil { const boost::uint16_t bits12_max_val = 0xFFF; struct bits12_min { static boost::uint16_t apply() { return 0; } }; struct bits12_max { static boost::uint16_t apply() { return bits12_max_val; } }; typedef boost::gil::scoped_channel_value<boost::uint16_t, bits12_min, bits12_max> bits12; namespace detail { template <> struct unsigned_integral_max_value<bits12> : public mpl::integral_c<uint32_t,bits12_max_val> {}; template <> struct unsigned_integral_num_bits<bits12> : public mpl::int_<12> {}; }//end detail GIL_DEFINE_BASE_TYPEDEFS(12, gray) const boost::uint16_t bits14_max_val = 0x3FFF; struct bits14_min { static boost::uint16_t apply() { return 0; } }; struct bits14_max { static boost::uint16_t apply() { return bits14_max_val; } }; typedef boost::gil::scoped_channel_value<boost::uint16_t, bits14_min, bits14_max> bits14; namespace detail { template <> struct unsigned_integral_max_value<bits14> : public mpl::integral_c<uint32_t,bits14_max_val> {}; template <> struct unsigned_integral_num_bits<bits14> : public mpl::int_<14> {}; }//end detail GIL_DEFINE_BASE_TYPEDEFS(14, gray) } } //end gil, boost using namespace boost::gil; int main() { gray14_image_t img14(2,2); color_converted_view<gray12_pixel_t>(view(img14))(1,0); gray32f_image_t img32f(2,2); color_converted_view<gray12_pixel_t>(view(img32f))(1,0); return 0; } ////// END CODE /////////////////////////////// It produces the following warnings, trimmed to only those I thought relevant: ///////////////// BEGIN Relevant Warnings ////////////////////////////////////// c:\cygwin\home\ncrookston\boost\boost\gil\channel_algorithm.hpp(257) : warning C 4244: 'argument' : conversion from 'const double' to 'boost::uint16_t', possible loss of data c:\cygwin\home\ncrookston\boost\boost\gil\channel_algorithm.hpp(252) : w hile compiling class template member function 'boost::gil::scoped_channel_value< BaseChannelValue,MinVal,MaxVal> boost::gil::detail::channel_converter_unsigned_i ntegral_nondivisible<SrcChannelV,DstChannelV,SrcLessThanDst,CannotFitInInteger>: :operator ()(SrcChannelV) const' with [ BaseChannelValue=boost::uint16_t, MinVal=boost::gil::bits12_min, MaxVal=boost::gil::bits12_max, SrcChannelV=boost::gil::scoped_channel_value<boost::uint16_t,boost:: gil::bits14_min,boost::gil::bits14_max>, DstChannelV=boost::gil::scoped_channel_value<boost::uint16_t,boost:: gil::bits12_min,boost::gil::bits12_max>, SrcLessThanDst=false, CannotFitInInteger=false ] <snip lots of instantiation backtrace> c:\cygwin\home\ncrookston\boost\boost\gil\channel_algorithm.hpp(268) : warning C 4244: 'argument' : conversion from 'float' to 'boost::uint16_t', possible loss o f data c:\cygwin\home\ncrookston\boost\boost\gil\channel_algorithm.hpp(268) : w hile compiling class template member function 'boost::gil::scoped_channel_value< BaseChannelValue,MinVal,MaxVal> boost::gil::channel_converter_unsigned<SrcChanne lV,DstChannelV>::operator ()(boost::gil::bits32f) const' with [ BaseChannelValue=boost::uint16_t, MinVal=boost::gil::bits12_min, MaxVal=boost::gil::bits12_max, SrcChannelV=boost::gil::scoped_channel_value<float,boost::gil::float _zero,boost::gil::float_one>, DstChannelV=boost::gil::scoped_channel_value<boost::uint16_t,boost:: gil::bits12_min,boost::gil::bits12_max> ] <snip lots more instantiation backtrace> /////////////////////// END Relevant Warnings ////////////////////////////////////////////////// Interestingly, g++ doesn't have an issue with the code. The following patch corrects the problem. I'd be happy to create a trac ticket, write some tests, etc. Please advise. ////////////// BEGIN Patch ////////////////////////////////////// Index: channel_algorithm.hpp =================================================================== --- channel_algorithm.hpp (revision 63088) +++ channel_algorithm.hpp (working copy) @@ -243,7 +243,18 @@ } }; +// Determines the base type of the channel. +template <typename Channel> +struct base_channel { typedef Channel type; }; +template <typename BaseChannelValue, typename MinVal, typename MaxVal> +struct base_channel<scoped_channel_value<BaseChannelValue,MinVal,MaxVal> > +: public base_channel<BaseChannelValue> {}; + +template <int NumBits> +struct base_channel<packed_channel_value<NumBits> > +{ typedef typename packed_channel_value<NumBits>::integer_t type; }; + // Both source and destination are unsigned integral channels, // the dst max value is less than (or equal to) the src max value, // and the src max value is not divisible by the dst max value @@ -253,8 +264,8 @@ typedef typename unsigned_integral_max_value<SrcChannelV>::value_type integer_t; static const double div = unsigned_integral_max_value<SrcChannelV>::value / double(unsigned_integral_max_value<DstChannelV>::value); - static const integer_t div2 = integer_t(div/2); - return DstChannelV((src + div2) / div); + static const integer_t div2 = static_cast<integer_t>(div/2); + return static_cast<typename base_channel<DstChannelV>::type>((src + div2) / div); } }; @@ -265,7 +276,8 @@ ///////////////////////////////////////////////////// template <typename DstChannelV> struct channel_converter_unsigned<bits32f,DstChannelV> : public std::unary_function<bits32f,DstChannelV> { - DstChannelV operator()(bits32f x) const { return DstChannelV(x*channel_traits<DstChannelV>::max_value()+0.5f); } + DstChannelV operator()(bits32f x) const { return + static_cast<typename detail::base_channel<DstChannelV>::type>(x*channel_traits<DstChannelV>::max_value()+0.5f); } }; template <typename SrcChannelV> struct channel_converter_unsigned<SrcChannelV,bits32f> : public std::unary_function<SrcChannelV,bits32f> { //////// END patch //////////////// Thanks, Nate

2 8

matrix function template for triangular_matrix and matrix datatypes
by Max S. Kaznady 04 Aug '10

04 Aug '10

Suppose we are working in namespace boost::numeric::ublas and I have 2 functions 1) template <class T> save_matrix(matrix<T> const &m) 2) template <class T> save_matrix(triangular_matrix<T,lower> const &m) and the code in both overloaded save_matrix functions is identical. How can I write a templated function which accepts any type of a matrix? I tried this, but it didn't work: template <class T> save_matrix(T const &m) Thanks, Max

2 3

[interprocess] shared memory, condtions, deadlock
by Kai Benndorf 04 Aug '10

04 Aug '10

Hi all, I'm trying to use the shared memory functionality of the boost interprocess library for implementing a client and a server like process, where the server calculates something for the client. I use condition variables for the process synchronization. The implementation works initially, but I am getting deadlocks, now. I appended a pseudo code example of my implementation. One instance of the SharedData class is hold in shared memory. On deadlock, both processes are hanging in the wait() functions. What am I doing wrong? Many thanks for any hint. Regards Kai

1 0

[conversion] lexical_cast doesn't throw
by Gaetano Mendola 04 Aug '10

04 Aug '10

Hi all, I'm in the process to migrate our application from RedHat 5.5 (gcc 4.1.2) to Ubuntu 10.04 (gcc 4.4.3), one regression test is not passing due the fact that lexical_cast is not throwing, this is the line: unsigned int myNumber = boost::lexical_cast<unsigned int>("-123"); I'm using boost 1.40 on both servers. I have noticed that the same executable compiled on Ubuntu 10.04 while on Ubuntu doesn't throw, running it on RH 5.5 throws, so it seems a system library problem. Trying with a simple stringstream, it seems that with the following code: std::stringstream myStream; myStream << "-123"; unsigned int myUInt; myStream >> myUInt; doens't set the fail bit on Ubuntu 10.04, but it does on RedHat 5.5. Does anyone have an idea on what is going on Regards Gaetano Mendola

1 0

Thread object pointers.
by Albert Schueller 04 Aug '10

04 Aug '10

Tue Aug 3 14:10:04 PDT 2010 Hi all, I'm trying to get up to speed on libboost's thread class using the tutorial information here: http://www.drdobbs.com/cpp/184401518 I'm curious why the two programs below seem to behave differently. In LISTING 1, three threads are declared as thrd1, thrd2, and thrd3 explicitly and each loops 10 times with random length sleeps. LISTING 2 is identical, except for the fact the three thread variables are allocated to boost::thread pointers. When I run LISTING 1 it appears that the threads are acting independently as I would hope. When I run LISTING 2, it seems that the threads are not independent, but rather thrd1 does its job, followed by thrd2, followed by thrd3. Am I not locking properly? Any help would be appreciated. Albert /////////////////////////////////////////////////////////////////////////// //LISTING 1 #include <boost/thread/thread.hpp> #include <boost/thread/mutex.hpp> #include <iostream> #include <unistd.h> #include <cstdlib> boost::mutex io_mutex; struct count { count(int id) : id(id) { } void operator()() { int upause; for (int i = 0; i < 10; ++i) { upause = rand()%1000000; usleep(upause); boost::mutex::scoped_lock lock(io_mutex); std::cout << id << ": " << i << " paused " << upause << std::endl; } } int id; }; int main(int argc, char* argv[]) { boost::thread thrd1(count(1)); boost::thread thrd2(count(2)); boost::thread thrd3(count(3)); thrd1.join(); thrd2.join(); thrd3.join(); return 0; } /////////////////////////////////////////////////////////////////////////// //LISTING 2 #include <boost/thread/thread.hpp> #include <boost/thread/mutex.hpp> #include <iostream> #include <unistd.h> #include <cstdlib> boost::mutex io_mutex; struct count { count(int id) : id(id) { } void operator()() { int upause; for (int i = 0; i < 10; ++i) { upause = rand()%1000000; usleep(upause); boost::mutex::scoped_lock lock(io_mutex); std::cout << id << ": " << i << "paused (" << upause << ")" << std::endl; } } int id; }; int main(int argc, char* argv[]) { int i; int num_thrds = 3; boost::thread *thrd[4]; for(i=0;i<num_thrds;i++) { thrd[i] = new boost::thread(count(i+1)); thrd[i]->join(); } // deallocate thread objects for(i=0;i<num_thrds;i++) { delete thrd[i]; } return 0; }

5 7

Open a filename with a wstring or wchar_t *
by Timothy Madden 03 Aug '10

03 Aug '10

Hello Surprisingly enough, C++ file-based streams can be opened with a char * string (for the filename) only, while modern computer systems have Unicode filenames. I see boost::iostreams::basic_file also gets constructed from a char * only. My project name has Korean characters, and I work on a Latin1 Windows system, and on my system the narrow-characters set simply does not contain Korean characters. Is there a (good) way to open a file with a wstring in boost ? Thank you, Timothy Madden

6 14

Problem with boost::bind, boost::shared_ptr and std::find_if algorithm
by przemyslaw.sliwa＠uk.bnpparibas.com 03 Aug '10

03 Aug '10

All, I have the following data sructure: struct WeightedTimeHolder { double time; double dt; double weight; double dailyVol; double varDelta_t; double cutToCutdailyVol; double extraVar; double varPlusEventVar; double aggrVar; double implVol; int cut; } and typedef multimap<int, boost::shared_ptr<WeightedTimeHolder> > DataMap. Now given value of cut in this data structure I would like to find the next position in DataMap which corresposnds to this gven value, I do it in the following manner: void nextPositionForCut(DataMap::iterator& pos, CutOffType cut) const { if((*pos).second->cut!=cut) while((*(++pos)).second->cut!=cut && pos!=m_pData->end()) {} // convert to boost::bind for better use! //pos = find_if(pos, m_pData->end(), boost::bind(&DataMap::value_type::second::value_type::cut, _1) == cut); } Since this looks really ugly I would like to ask you how this can be converto to find_if algorithm with a little help of boost::bind. I tried but could not succees. Thanks for help, Przemyslaw ___________________________________________________________ This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and delete this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is prohibited. Please refer to http://www.bnpparibas.co.uk/en/information/legal_information.asp?Code=ECAS-… for additional disclosures.

2 1

[multi_index] modify~~
by isjk 03 Aug '10

03 Aug '10

hi, now, I have two structures like this, struct peer { int guid_; }; struct channel { int md5_; peer* pr_; int prop_; }; ------------------------------------------ peer and channel is many to many. using example6::key_from_key class; ------------------------------------------ typedef multi_index_container< peer, index_by< ordered_unique< BOOST_MULTI_INDEX_MEMBER(peer, int, guid_) > > >peer_table; typedef multi_index_container< channel, index_by< ordered_non_unique< BOOST_MULTI_INDEX_MEMBER(channel, int, md5_) > > >channel_table; typedef multi_index_container< const channel*, ordered_non_unique< key_from_key< BOOST_MULTI_INDEX_MEMBER(peer, const int, guid_), BOOST_MULTI_INDEX_MEMBER(channel, const peer*, pr_) > > >channel_table_pr_view; peer_table pt; channel_table ct; /// insert very much data.... nth_index<channel_table, 0>::type ic0,ic1; boost::tie(ic0, ic1) = get<0>(ct).equal_range(md5_); channel_table_pr_view ctpv; while (ic0 != ic1) { ctpv.insert(&*ic0); ++ic0; } channel_table_pr_view::iterator ictpv = ctpv.find(guid_); if (ictpv != ctpv.end()) { ctpv.modify(ictpv, _Modify_prop()); // right or not? } struct _Modify_prop{ void operator()(channel& cl_) { cl_.prop = rand(); } }; I want to modify channel' s prop. thanks. -- View this message in context: http://old.nabble.com/-multi_index--modify%7E%7E-tp29322711p29322711.html Sent from the Boost - Users mailing list archive at Nabble.com.

2 3

Question regarding using asn1 boost libraries
by Mupparthy Ravindranath 03 Aug '10

03 Aug '10

Dear friends, From the URL "http://www.ibusy.com/devtree/asn1/boost_asn1/linking.html", I learnt that boost has support for ASN1 (Abstract Syntax Notation) encoding and decoding using BER (Basic Encoding Rules). But when I downloaded the boost tar zip file, i could not find the below header file(s): #include <boost/asn1/asn1.hpp> Can someone help me where to get the ASN1 support header files for boost... Thanks and regards, RV

3 2

boost install error
by Jack Bryan 02 Aug '10

02 Aug '10

Dear All:I am trying to install boost on MPI clsuter with MPICH2. After ./bjam install, I compile a test program provided by boost.org .But I got errors: The program is :-----------------------------------------------------------------#include <iostream>#include <boost/mpi/environment.hpp>#include <boost/mpi/communicator.hpp>namespace mpi = boost::mpi;int main(int argc, char* argv[]){ mpi::environment env(argc, argv); mpi::communicator world; std::cout << "I am process " << world.rank() << " of " << world.size() << "." << std::endl; return 0;}--------------------------------------------------------------Errors: ------------------------------------------------------------------mpic++ -o testp2p test_p2p.cpp -I/home/boost_2010_8_1/boost_1_43_0 -L/home/boost_2010_8_1/boost_1_43_0/stage/lib -lboost_mpi -lboost_serialization/usr/bin/ld: warning: liblam.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/usr/bin/ld: warning: liblamf77mpi.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/usr/bin/ld: warning: liblammpi++.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_short'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_unsigned'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Comm::mpi_comm_map'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `op_intercept'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_errors_return'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Intracomm::current_op'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_comm_world'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_unsigned_char'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_char'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Comm::mpi_err_map'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_group_empty'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_packed'collect2: ld returned 1 exit status-------------------------------------------------------------------It seems that it needs LAM/MPI. But, the LAM/MPI has been installed: PATH=/home/openmpi_123/bin:/home/boost_2010_8_1/boost_1_43_0: .......I used ./bjam --prefix=mypathand then ./bjam and then ./bjam installAny help is appreciated. Any help is appreciated. thanksJackAug. 1 2010

1 0

Re: [Boost-users] [Polygon] Test among 3 libraries
by TONGARI 02 Aug '10

02 Aug '10

OvermindDL1 wrote: >Cannot download your files, says they are unavailable (although I see >them fine...). They should be available now. Seems like permission to folder only not applies to its items.

1 0

[Serialization] Diamond shaped inheritance and serialization methods specialization
by Robert Bigaignon 02 Aug '10

02 Aug '10

Hi all, I'm having trouble with Boost's serialization library that I'm trying to integrate with an existing class hierarchy that used MFC toolkit as the archiver. It seems that when a serializable class defines a specialized save (or load or serialize for that matter) in addition to the generic method, the serialization library gets confused and ends up not identify properly that the hierarchy of serializable classes uses multiple inheritance and in particular diamond-shaped inheritance. I've reproduced the problem using the test_diamond code example provided with Boost 1.43 using MS VC 9.0 by adding a save method specialized for archive::text_oarchive to the derived1 class defined in test_diamond.cpp. The following diff shows the implementation of this specialized method: -----8<----- --- ../temp/boost_1_43_0/boost_1_43_0/libs/serialization/test/test_diamond.cpp Wed Jul 14 11:28:02 2010 +++ ../serializationProto.cpp Wed Jul 28 13:05:47 2010 @@ -95,6 +97,13 @@ ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); } + template<> + void save(boost::archive::text_oarchive &ar, const unsigned int i) const + { + std::cout << "Saving (Text) derived1\n"; + ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); + } + template<class Archive> void load(Archive & ar, const unsigned int /* file_version */) { @@ -122,6 +131,7 @@ } BOOST_SERIALIZATION_SPLIT_MEMBER() + }; class final : public derived1, public derived2 { @@ -202,3 +212,219 @@ return EXIT_SUCCESS; } ----->8----- Adding the following function definition to will result in an access violation (see call stack bellow) in access.hpp @ line 136. Any idea as to what is intrinsically wrong with code or how to fix this issue is most welcome. Call stack: > serializationProtoArchiversWrappers.exe!boost::serialization::access::cast_reference<base const ,derived2 const >(const derived2 & u={...}) Line 136 + 0x1a bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::base_object<base,derived2 const >(const derived2 & d={...}) Line 105 + 0x9 bytes C++ serializationProtoArchiversWrappers.exe!derived2::save<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 134 + 0x9 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save<boost::archive::text_oarchive,derived2 const >(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver<boost::archive::text_oarchive,derived2>::invoke(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member<boost::archive::text_oarchive,derived2>(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!derived2::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 144 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize<boost::archive::text_oarchive,derived2>(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize<boost::archive::text_oarchive,derived2>(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,derived2>(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::oserializer<boost::archive::text_oarchive,derived2>::save_object_data(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0034de3c) Line 152 + 0x3e bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0034de3c, const boost::archive::detail::basic_oserializer & bos={...}) Line 285 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive::save_object(const void * x=0x0034de3c, const boost::archive::detail::basic_oserializer & bos={...}) Line 434 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::save_standard::invoke<derived2>(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}) Line 259 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::invoke<derived2>(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save<boost::archive::text_oarchive,derived2 const >(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchive<boost::archive::text_oarchive>::save_override<derived2 const >(const derived2 & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<derived2 const >(const derived2 & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<derived2 const >(const derived2 & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<derived2 const >::save<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 80 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > >::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<derived2 const >::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 89 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::save_only::invoke<boost::serialization::nvp<derived2 const > >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}) Line 245 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::invoke<boost::serialization::nvp<derived2 const > >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save<boost::archive::text_oarchive,boost::serialization::nvp<derived2 const > const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<derived2 const > const >(const boost::serialization::nvp<derived2 const > & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<derived2 const > const >(const boost::serialization::nvp<derived2 const > & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<boost::serialization::nvp<derived2 const > const >(const boost::serialization::nvp<derived2 const > & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!final::save<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 159 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save<boost::archive::text_oarchive,final const >(boost::archive::text_oarchive & ar={...}, const final & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver<boost::archive::text_oarchive,final>::invoke(boost::archive::text_oarchive & ar={...}, const final & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member<boost::archive::text_oarchive,final>(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!final::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 169 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize<boost::archive::text_oarchive,final>(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize<boost::archive::text_oarchive,final>(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,final>(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::oserializer<boost::archive::text_oarchive,final>::save_object_data(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0034de38) Line 152 + 0x3e bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0034de38, const boost::archive::detail::basic_oserializer & bos={...}) Line 265 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive::save_object(const void * x=0x0034de38, const boost::archive::detail::basic_oserializer & bos={...}) Line 434 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::save_standard::invoke<final>(boost::archive::text_oarchive & ar={...}, const final & t={...}) Line 259 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::invoke<final>(boost::archive::text_oarchive & ar={...}, const final & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save<boost::archive::text_oarchive,final const >(boost::archive::text_oarchive & ar={...}, const final & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchive<boost::archive::text_oarchive>::save_override<final const >(const final & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<final const >(const final & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<final const >(const final & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<final>::save<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 80 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save<boost::archive::text_oarchive,boost::serialization::nvp<final> const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver<boost::archive::text_oarchive,boost::serialization::nvp<final> >::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member<boost::archive::text_oarchive,boost::serialization::nvp<final> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<final>::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 89 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize<boost::archive::text_oarchive,boost::serialization::nvp<final> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize<boost::archive::text_oarchive,boost::serialization::nvp<final> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,boost::serialization::nvp<final> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::save_only::invoke<boost::serialization::nvp<final> >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}) Line 245 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::invoke<boost::serialization::nvp<final> >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save<boost::archive::text_oarchive,boost::serialization::nvp<final> const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<final> const >(const boost::serialization::nvp<final> & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<final> const >(const boost::serialization::nvp<final> & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<boost::serialization::nvp<final> const >(const boost::serialization::nvp<final> & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::pointer_oserializer<boost::archive::text_oarchive,final>::save_object_ptr(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0034de38) Line 202 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive_impl::save_pointer(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0034de38, const boost::archive::detail::basic_pointer_oserializer * bpos_ptr=0x005967c8) Line 403 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive::save_pointer(const void * t=0x0034de38, const boost::archive::detail::basic_pointer_oserializer * bpos_ptr=0x005967c8) Line 442 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_pointer_type<boost::archive::text_oarchive>::polymorphic::save<base>(boost::archive::text_oarchive & ar={...}, base & t={...}) Line 445 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_pointer_type<boost::archive::text_oarchive>::save<base>(boost::archive::text_oarchive & ar={...}, const base & t={...}) Line 460 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_pointer_type<boost::archive::text_oarchive>::invoke<base const *>(boost::archive::text_oarchive & ar={...}, const base * const t=0x0034de38) Line 473 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save<boost::archive::text_oarchive,base const * const>(boost::archive::text_oarchive & ar={...}, const base * const & t=0x0034de38) Line 525 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchive<boost::archive::text_oarchive>::save_override<base const * const>(const base * const & t=0x0034de38, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<base const * const>(const base * const & t=0x0034de38, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<base const * const>(const base * const & t=0x0034de38) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<base const *>::save<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 80 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save<boost::archive::text_oarchive,boost::serialization::nvp<base const *> const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<base const *> & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver<boost::archive::text_oarchive,boost::serialization::nvp<base const *> >::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<base const *> & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member<boost::archive::text_oarchive,boost::serialization::nvp<base const *> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<base const *> & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<base const *>::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 89 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize<boost::archive::text_oarchive,boost::serialization::nvp<base const *> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<base const *> & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize<boost::archive::text_oarchive,boost::serialization::nvp<base const *> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<base const *> & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,boost::serialization::nvp<base const *> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<base const *> & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::save_only::invoke<boost::serialization::nvp<base const *> >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<base const *> & t={...}) Line 245 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive>::invoke<boost::serialization::nvp<base const *> >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<base const *> & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save<boost::archive::text_oarchive,boost::serialization::nvp<base const *> const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<base const *> & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<base const *> const >(const boost::serialization::nvp<base const *> & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<base const *> const >(const boost::serialization::nvp<base const *> & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<boost::serialization::nvp<base const *> const >(const boost::serialization::nvp<base const *> & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!test_main(int __formal=1, int __formal=1) Line 210 C++ serializationProtoArchiversWrappers.exe!main(int argc=1, char * * argv=0x0034e198) Line 180 + 0xd bytes C++ -- Robert Bigaignon

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[multi_index] looking for "equal_to and less than"
by isjk 02 Aug '10

02 Aug '10

hi, I've got a structure like this, struct peer { int md5_; // unique key. int rank_; int degrees_; }; now, I need a composite_key, it can find equal_to "md5" and less than "rank_" and "degrees_" less than 8. eg: md5 rank degrees 2 0 8 2 1 5 2 2 0 2 6 3 4 3 1 4 5 0 f(2, 2) return (2 1 5) f(2, 1) return null f(2, 6) return (2 2 0)(2 1 5) f(4, 5) return (4 3 1) Thanks. -- View this message in context: http://old.nabble.com/-multi_index--looking-for-%22equal_to-and-less-than%2… Sent from the Boost - Users mailing list archive at Nabble.com.

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Problem to substitute the std allocator with boost.asio and boost.filesystem
by watsonsong 02 Aug '10

02 Aug '10

I subsitute the std allocator with my own stl allocator, and defined a new string type like this: typedef std::basic_string<char, std::char_traits<char>, MySTLAllocator<char> > my_string; typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, MySTLAllocator<wchar_t> > my_wstring; And I want to use them in my project, but I met some problem when I use boost.asio and boost.filesystem. The boost asio directly use std::string, I can not find a way to deal with it. I know I can pass a c style string char* to the asio, but it was less efficiency. When use the boost.filesystem, I tried this way, but I also met some problem: namespace MyNamespace { struct path_traits; typedef boost::filesystem::basic_path<my_string, path_traits> path; typedef boost::filesystem::basic_path<my_wstring, path_traits> wpath; struct path_traits { typedef my_string internal_string_type; typedef my_string external_string_type; static external_string_type to_external( const path &, const internal_string_type & src ) { return src; } static internal_string_type to_internal( const external_string_type & src ) { return src; } }; typedef boost::filesystem::basic_recursive_directory_iterator<path> recursive_directory_iterator; typedef boost::filesystem::basic_recursive_directory_iterator<wpath> wrecursive_directory_iterator; } namespace boost { namespace filesystem { template<> struct is_basic_path<MyNamespace::path> { BOOST_STATIC_CONSTANT( bool, value = true ); }; template<> struct is_basic_path<MyNamespace::wpath> { BOOST_STATIC_CONSTANT( bool, value = true ); }; } } namespace MyNamespace { inline bool is_directory( const path & ph ) { return boost::filesystem::is_directory<path>( ph ); } inline bool is_directory( const wpath & ph ) { return boost::filesystem::is_directory<wpath>( ph ); } } For replace all the function is a huge work, and in this way I can not replace it for I met this function, which is also use the std::string directly: BOOST_FILESYSTEM_DECL file_status status_api( const std::string & ph, system::error_code & ec ); Maybe this way is too bother, I think there must be an easy way to replace the string. Is there any way to resolve this? Thank you. -- View this message in context: http://old.nabble.com/Problem-to-substitute-the-std-allocator-with-boost.as… Sent from the Boost - Users mailing list archive at Nabble.com.

1 0

boost compile error
by Jack Bryan 02 Aug '10

02 Aug '10

Dear All: I am trying to install boost on MPI clsuter with MPICH2. After ./bjam install, I compile a test program provided by boost.org . But I got errors: The program is :-----------------------------------------------------------------#include <iostream>#include <boost/mpi/environment.hpp>#include <boost/mpi/communicator.hpp> namespace mpi = boost::mpi; int main(int argc, char* argv[]){ mpi::environment env(argc, argv); mpi::communicator world; std::cout << "I am process " << world.rank() << " of " << world.size() << "." << std::endl; return 0;}-------------------------------------------------------------- Errors: ------------------------------------------------------------------mpic++ -o testp2p test_p2p.cpp -I/home/boost_2010_8_1/boost_1_43_0 -L/home/boost_2010_8_1/boost_1_43_0/stage/lib -lboost_mpi -lboost_serialization/usr/bin/ld: warning: liblam.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/usr/bin/ld: warning: liblamf77mpi.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/usr/bin/ld: warning: liblammpi++.so.0, needed by /home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so, not found (try using -rpath or -rpath-link)/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_short'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_unsigned'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Comm::mpi_comm_map'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `op_intercept'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_errors_return'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Intracomm::current_op'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_comm_world'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_unsigned_char'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_char'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `PMPI::Comm::mpi_err_map'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_group_empty'/home/boost_2010_8_1/boost_1_43_0/stage/lib/libboost_mpi.so: undefined reference to `lam_mpi_packed'collect2: ld returned 1 exit status ------------------------------------------------------------------- It seems that it needs LAM/MPI. But, the LAM/MPI has been installed: PATH=/home/openmpi_123/bin:/home/boost_2010_8_1/boost_1_43_0: ....... I used ./bjam --prefix=mypathand then ./bjam and then ./bjam installAny help is appreciated. Any help is appreciated. thanks Jack Aug. 1 2010

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[Polygon] Test among 3 libraries
by TONGARI 01 Aug '10

01 Aug '10

Hi, I just modified a test program taken from AGG's examples to test the polygon clipping capability of following libraries. *Boost.Polygon *GPC *Clipper Here are some observations: 1) The proccesing speed (fastest to slowest): Clipper > GPC > Boost.Polygon 2) With "xor", although the results seems the same, they have different countours numbers (Clipper the least). 3) Boost.Polygon has a strange behavior that it sometimes produces erroneous vertical lines within the polygons. In this example, with "or" operation you'll see that. I put the test files here: *http://tinyurl.com/2axoqxc Anyone who wants to compile it will also need AGG and *Clipper on your computer.

2 1

Boost.FSM in boost 1_42 (newbie)
by Doron Bar 01 Aug '10

01 Aug '10

Hi to all, I intended to use the boost.FSM library. I have install boot version 1.42 but the FSM lib is not there, only statechart. Did this library has been removed from boost? Thanks a lot, Doron Doron Bar Electro-Optics Division Soreq NRC, Yavne 81800 Israel Office: +972-8-9-434361 Mobile: +972-50-6292123 Home: +972-3-9640937 ************************************************************************************ This footnote confirms that this email message has been scanned by PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses. ************************************************************************************

2 1