July 2007 - Boost-users - lists.preview.boost.org

[Boost.Filesystem] Program can't run under Win 98
by Trigve Siver 13 Jul '07

13 Jul '07

Hi I've got a problem running application that uses boost.filesystem on win 98. I'm compiling it on Win XP SP2. The problem is the CreateHardLinkA function. It seems that this functions was added lately to kernel32.dll (Windows 2000 I think). Is there any solution to resolve this problem? Anyway I don't use any links operations from boost.filesystem so I don't care about this function. I'm using boost 1.34. With boost 1.33.1 everything was working fine ( I think there wasn't code for link operations). thanks Trigve ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

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[boost:filesystem] - linker errors.
by chun ping wang 13 Jul '07

13 Jul '07

k i have program a.h that uses boost filesystem. b.h includes a.h and also uses boost::filesystem.. when i build i get this error. C:/Boost/include/boost_1_34/boost/filesystem/convenience.hpp:70: multiple defini tion of `boost::filesystem::basename(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)' ./teng/lib/libmy.a(my.o):C:/Boost/include/boost_1_34/boost/filesys tem/convenience.hpp:70: first defined here ./teng/lib/libmy.a(my2.o): In function `ZN5boost10filesystem9exten sionERKNS0_10basic_pathISsNS0_11path_traitsEEE': C:/Boost/include/boost_1_34/boost/filesystem/convenience.hpp:58: multiple defini tion of `boost::filesystem::extension(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)' ./teng/lib/libmy.a(my.o):C:/Boost/include/boost_1_34/boost/filesys tem/convenience.hpp:58: first defined here

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Re: [Boost-users] Question
by question boost 13 Jul '07

13 Jul '07

Hi, I don't understant what you are saying excactly. What do you mean by "to put the path to mingw from CodeBlock in your PATH environnement variable (Control Panel/System/Advanced/Environment variables)"? Give an example (fictious data) and then it will be clear to me. Thank you.> To: boost-users(a)lists.boost.org> Wrom: NQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULH _________________________________________________________________ David Guetta a réuni les sons les plus connus de Messenger dans le Mix Messenger, le son de l’été ! Téléchargez-le gratuitement ! http://specials.divertissements.fr.msn.com/mixmessenger

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deep copying reference_wrapper<>s in a bind()
by Edd Dawson 13 Jul '07

13 Jul '07

Hi folks, I'm currently attempting to create a little facility that will allow me to eaily kick off a function call in another thread and get the result through a "future". Something like: unsigned count_primes_upto(std::size_t max); async::layered_cage < std::exception, std::domain_error, async::catch_all > cage; // to catch exceptions // call count_primes_upto(9876543210) in another thread async::future<unsigned> n = async::call(cage, &count_primes_upto, 9876543210); // do other stuff in the mean time // ... // Block until done. Get result or propagate exception std::cout << "there are " << n.value() << " primes less than " << 9876543210 <<'\n'; To achieve this I'm using boost::bind and boost::function quite heavily. I've discovered that by the time the final boost::function<void ()> is composed for the boost::thread constructor, I've copied each of the arguments (such as 9876543210 in the above) about 30 times!. Now, I can use boost::ref() internally in such a way that no copying of arguments happens at all. However, this is also undesirable; I would like the thread that is created to have its own copy of each argument unless the client explicitly wraps an argument in boost::ref/cref in order to avoid dangling cross-thread references. So what I'd like is a way to copy the result of my final boost::bind() call in to a new functor where all the ref() arguments are deep-copied once and only once at the end. Is there some way of doing this? Perhaps the "as yet undocumented" visit_each is relevant, here? Kind regards, Edd

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[wave] linking errors for the head revision
by Ovanes Markarian 13 Jul '07

13 Jul '07

Hartmut, applying your patch from the CVS head (which you produced in request to multi-thread safety and conditional preprocessing) results in linking problems. I tried compiling with boost_1_34_0 and boost_1_34_1_RC2. Here are some of the errors which are produced by the linker. The interesting thing is that threading library is compiled fine. instantiate_cpp_exprgrammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_cpp_grammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_cpp_literalgrs.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_defined_grammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) With Kind Regards, Ovanes Markarian

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Re: [Boost-users] [Graph] Maximum Cardinality Matching: weighted?
by Jean-Francois Bastien 13 Jul '07

13 Jul '07

> Hi Jean-Francois, > > Sorry, but the BGL currently doesn't have an implementation > of weighted matching, even for bipartite graphs. Edmonds' > algorithm works only on unweighted graphs. I'd been looking for an algorithm before I found Boost's implementation (which turns out to be a no-match for my problem); the Hungarian algorithm seems to do the thing but it seems to be the first algorithm developped to solve such problem and I've read it's not as good as the latest algorithms (correct me if that's wrong). Unfortunately the litterature gets a bit hard to read for me who know nothing of graph theory. I'd nonetheless like to (try to) implement for a maximum weighted maximum cardinality matching solver potentially unbalanced complete weighted bipartite graph, and if it works out add it to the BGL. Which algorithm (paper or source references would be appreciated) should I implement to do this efficiently, if not the Hungarian algorithm? > > Regards, > Aaron JF

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Re: [Boost-users] Question
by frederic.bron＠alcan.com 13 Jul '07

13 Jul '07

What are you trying to do? Building the library or building a program. If you want to build the library, 1st get bjam from here: http://sourceforge.net/project/showfiles.php?group_id=7586&package_id=72941 Download boost-jam-3.1.14-1.ntx38.zip You will get from the zip file bjam.exe which you then do not need to build yourself! The next step is to build the boost library itself using bjam. I think the best is 1st to put the path to mingw from CodeBlock in your PATH environnement variable (Control Panel/System/Advanced/Environment variables) Then I think bjam can find alone the path to your gcc. F. Bron question boost <question.boost@h Pour : <frederic.bron(a)alcan.com> otmail.fr> cc : Objet : Bjam 12/07/2007 13:37 Hi Frederic Bron, using Code Blocks i got the following message:ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l"Then I do: cd C:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src thenC:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src\build.batThen I set the following variables:BOOST_ROOT= C:\Documents and Settings\src\boostand BOOST_BUILD_PATH=C:\Documents and Settings\src\boost\tools\build\v2. I don't know what to do now. You have told me the version of boost was the solution but it isn't. I ask you because I suppose that as a Boost user , you have already configured Bjam. I've run build.bat (see bjam.qbk) then i've set the variables BOOST_ROOT and BOOST_BUILD_PATH but I get the message again. What is the solution? Thank You Frederic Bron Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail et bénéficiez d'un filtre antivirus gratuit ! Windows Live Hotmail Avis : Ce message et toute pièce jointe sont la propriété d'Alcan et sont destinés seulement aux personnes ou à l'entité à qui le message est adressé. Si vous avez reçu ce message par erreur, veuillez le détruire et en aviser l'expéditeur par courriel. Si vous n'êtes pas le destinataire du message, vous n'êtes pas autorisé à utiliser, à copier ou à divulguer le contenu du message ou ses pièces jointes en tout ou en partie. Notice: This message and any attachments are the property of Alcan and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part.

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[smart_ptr]why scoped_ptr c ann't used in this case, yet shared_ptr ca n
by hongleij＠126.com 13 Jul '07

13 Jul '07

//cpeer.h #ifndef CPEER_H_ #define CPEER_H_ #include <string> struct CPeer { std::string name; }; #endif /*CPEER_H_*/ //cpeermanager.h #ifndef CPEERMANAGER_H_ #define CPEERMANAGER_H_ class CPeer; #include <boost/shared_ptr.hpp> #include <boost/scoped_ptr.hpp> class CPeerManager { public: CPeerManager(); boost::scoped_ptr<CPeer> cp_; //error // boost::shared_ptr<CPeer> cp_; // ok }; #endif /*CPEERMANAGER_H_*/ //cpeermanager.cpp #include "cpeer.h" #include "cpeermanager.h" CPeerManager::CPeerManager(): cp_ (new CPeer() ) { } //main.cpp #include "cpeermanager.h" int main() { CPeerManager cp; } i get **** Build of configuration Debug for project scoped_ptr_test **** make -k all 'Building file: ../cpeermanager.cpp' 'Invoking: GCC C++ Compiler' g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"cpeermanager.d" -MT"cpeermanager.d" -o"cpeermanager.o" "../cpeermanager.cpp" 'Finished building: ../cpeermanager.cpp' ' ' 'Building file: ../main.cpp' 'Invoking: GCC C++ Compiler' g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.cpp" c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp: In function 'void boost::checked_delete(T*) [with T = CPeer]': c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/scoped_ptr.hpp:77: instantiated from 'boost::scoped_ptr<T>::~scoped_ptr() [with T = CPeer]' ../cpeermanager.h:11: instantiated from here c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:32: error: invalid application of 'sizeof' to incomplete type 'CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:32: error: creating array with negative size ('-0x000000001') c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:33: error: invalid application of 'sizeof' to incomplete type 'CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:33: error: creating array with negative size ('-0x000000001') c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:34: warning: possible problem detected in invocation of delete operator: c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:29: warning: 'x' has incomplete type ../cpeermanager.h:4: warning: forward declaration of 'struct CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:34: note: neither the destructor nor the class-specific operator delete will be called, even if they are declared when the class is defined. make: *** [main.o] Error 1 make: Target `all' not remade because of errors. Build complete for project scoped_ptr_test /// why boost::shared_ptr can used to Minimize compilation dependencies between files, yet boost::scoped_ptr cannot. I needn't to use reference cout.may someboby help me out of the trouble.thanks! iPod、万点巨额点卡、奖学金……海量奖品，想拿就拿！

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Re: [Boost-users] Boost with threadpool
by Gopalan, Srinivasan (MLITS) 13 Jul '07

13 Jul '07

Hi, Since I am new to boost I don't know about this defer package. Is this a separate package to be compiled and linked with boost before using threadpool. Srini. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Oliver.Kowalke(a)qimonda.com Sent: Wednesday, July 11, 2007 7:08 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Boost with threadpool Hi, take look at defer package in the boost vault. Oliver _____ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Gopalan, Srinivasan (MLITS) Sent: Wednesday, July 11, 2007 8:03 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] Boost with threadpool Hi all, I would like to know whether any version of boost uses threadpool. Also there is a separate threadpool package. I would like to know how to link this package with boost. Thanks, Srini. _____ This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or error-free. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/. By messaging with Merrill Lynch you consent to the foregoing. _____

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Re: [Boost-users] Building Boost on Solaris 10.
by Sabyasachi Nath 13 Jul '07

13 Jul '07

Thanks Markus, I am going to give a try. Hope for the best!!! Thanks & Regards, Sabyasachi Nath Product Development Unit UshaComm India Pvt Ltd Emp Id 1295 WS 441 Tel: 9133-22812803/05/06 Mo: 919830622831 Extn 230 -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org]On Behalf Of Markus Bernhardt Sent: Friday, July 13, 2007 10:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Building Boost on Solaris 10. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sabyasachi, I'm using boost 1.34.0 on Solaris 10 with Sun Studio 11. In 1.34.0 building on Solaris is a little bit broken. You are using commands for 1.32.0. They are not working any more. See my attached stripped down Makefile. Haven't tested this stripped down version. Hope it works. 0. You need to have the following tools in $PATH - gpatch - gmake - gtar - CC 1. Unpack the tar-file. 2. copy boost_1_34_0.tar.gz to thirdparty/packages 3. cd thirdparty 4. gmake The generated binaries are 64-bit. If you want 32-bit binaries, remove the line: $(PATCH) -p1 < $(local_srcdir)/patches/$(BOOST).patch.$(ARCHCC) || exit 1; \ (2 occurrences !!!) I only build the libs: - - thread - - serialization - - filesystem If you need other libs add "--with-<libraryname>" everywhere, where you see "--with-thread" Kind regards, Markus - -- Software Consulting Markus Bernhardt GmbH Spieljochstr. 34 81825 München Fon: +49-89-420903-14 Fax: +49-89-420903-20 www: http://www.scmb.de Geschäftsführung Markus Bernhardt Handelsregister AG München HRB 125966 USt-Id DE201885231 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGlwlkdnooMonJSYkRAvBbAJwMzr6wTk1/qlrfMy4JAZ4vrEhJkACcCWKS cPjrOgAQwivsGSqPaBdD25Q= =YhTA -----END PGP SIGNATURE-----

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