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counting semaphore boost 1.36
by gali barabash 20 Oct '08

20 Oct '08

Hello, I would like to use a counting semaphore - and to make sure that the threads will enter the semaphore by their arrival order. Is there a build-in counting semaphore with some kind of priority queue? if not, do boost threads have some kind of priority? I've noticed that some people implemented counting semaphore with condition variable, using wait and notify, but that doesn't keep the order. Is there another way to do it without actually implement my own priority queue? Thanks in advance, Gali

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Re: [Boost-users] [Proto] Extracting types of sub-expression in transform
by Ivan Godard 20 Oct '08

20 Oct '08

Eric Niebler wrote: I hadn't even considered the notion of a type system for a DSEL, but it makes perfect sense. Unfortunately, the only tutorial I found for van Wijngaarden grammars is here: http://homepages.cwi.nl/~steven/vw.html Perhaps it's because I'm tired, but I'm not making heads or tails of it at the moment. Can you point me to a gentler introduction? (Way back when I started with expression templates, I thought that calling them an "embedded language" was just a cute metaphor, but much can be gained from taking the serious view that these really *are* languages, deserving of grammars, semantic actions, ... type systems, too. Once we fully embrace that view, there's decades worth of programming language theory we can leverage.) and: Joel Falcou wrote: Eric Niebler a ?crit : > > (Way back when I started with expression templates, I thought that > > calling them an "embedded language" was just a cute metaphor, but much > > can be gained from taking the serious view that these really *are* > > languages, deserving of grammars, semantic actions, ... type systems, > > too. Once we fully embrace that view, there's decades worth of > > programming language theory we can leverage.) > > > You just have described parts of my research plans ;) My current work try to get a way using ET and Concept in C++ to have a condensed way to describe operationnal and/or denotanionnal semantic for C++ DSEL. Guess I'll indeed have to swallow up this typing system rules myself. Ivan : Thanks for the references. VWG was invented for and used to define Algol68. Personally, I find it easiest to understand a formal system when I have a worked out example in front of me. If you're the same way, I suggest starting with: http://en.wikipedia.org/wiki/Algol68 http://burks.brighton.ac.uk/burks/language/other/a68rr/rrtoc.htm Lindsey, C.H. and van der Meulen, S.G., /Informal Introduction to ALGOL 68/, North-Holland, 1971 (also sometimes known as "Algol68 without Tears") I'm biased here - I was on the working group that produced the second reference above - but I think that the only way to introduce semantics into a practical and general DSEL system is via formal means. However, both VWG and its exemplar in Algol68 have a very high intellectual tractability barrier, akin to the barrier facing newcomers to Functional Programming or Metaprogramming. But a casual note in Boost has already turned up three people who at least see the problem. That's a start :-) Ivan

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A question about boost::asio (using boost 1.36 minGW eclipse CDT windows
by gali barabash 20 Oct '08

20 Oct '08

Hello, I have compilation problem when trying to just #include <boost/asio.hpp>: /src/timer.o: In function `ZNK5boost16exception_detail15exception_cloneINS0_19error_info_injectorINS_6system12system_errorEEEE7add_refEv': C:/Dev/MessageThreads/Debug/../src/timer.cpp:(.text$_ZN5boost4asio6detail12winsock_initILi2ELi0EE7do_initD1Ev[boost::asio::detail::winsock_init<2, 0>::do_init::~do_init()]+0x7): undefined reference to `WSACleanup@0' C:/Dev/MessageThreads/Debug/../src/timer.cpp:(.text$_ZN5boost4asio6detail12winsock_initILi2ELi0EE7do_initC1Ev[boost::asio::detail::winsock_init<2, 0>::do_init::do_init()]+0x1f): undefined reference to `WSAStartup@8' collect2: ld returned 1 exit status I linked boost system boost_system-mgw34-mt-d-1_36 in Eclipse (MinGW C++ linker). Can someone please tell me what is wrong? Thanks a lot! Gali.

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Boost [Asio] Problem with POST Request and async_read
by anti00Zero 20 Oct '08

20 Oct '08

Hello. I've wrote a SSL Proxy and have a big problem. I use a HTTP Client in bei Proxy to communicate with my HTTP Server. HTTP Client and HTTP Server are localhost. A SSL Browser should call my local SSL Proxy and internal a HTTP Client communicate with my HTTP Server. If the SSL Brower sends a POST request to my proxy, I have a problem. This is my code: async_write(m_HTTPSocket, buffer(m_sSSLRequestBuffer), transfer_at_least(1), boost::bind(&CSession::HandleHTTPWriteRequest, this, placeholders::error)); void CSession::HandleHTTPWriteRequest(const error_code& error) { if (!error) { async_read(m_HTTPSocket, buffer(m_HTTPResponse, MAX_HTTPRESPONSE_BUFFER_LENGTH), transfer_at_least(1), boost::bind(&CSession::HandleHTTPReadResponse, this, placeholders::error, placeholders::bytes_transferred)); } else if(error != error::eof) { SendErrorToSSL(error); } } void CSession::HandleHTTPReadResponse(const error_code& error, size_t iTransferredBytes) { if(!error) { The error is boost::asio::error::connection_aborted (10053 (WSAECONNABORTED)). If I don't use my SSL Proxy the HTTP Browser works correct. I use Visual Studio 2005 with Boost 1.36 Thanks for help. -- Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger

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should i delete the *.o files?
by control_batik 20 Oct '08

20 Oct '08

Hi all, I recently compiled boost_ 1.36,(after 4 hours....). My question is simple (I haven't so much experience with C++ ), I only need the dll and .lib files, right?, because my build directory contains also the *.o files , and it sums 17 gb in my disk, and I think it's too much. Can i erase the *.o files??? Thanks for your answer. -- View this message in context: http://www.nabble.com/should-i-delete-the-*.o-files--tp20053058p20053058.ht… Sent from the Boost - Users mailing list archive at Nabble.com.

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Re: [Boost-users] Visual Studio 9.0 Express & boost 1.36 linker issues
by BenBe 20 Oct '08

20 Oct '08

Hi! I have exactly the same problem with the same error messages. Has somebody find out how to solve it? How can i build the lib sources with the settings of my project? - BenBe -- View this message in context: http://www.nabble.com/Visual-Studio-9.0-Express---boost-1.36-linker-issues-… Sent from the Boost - Users mailing list archive at Nabble.com.

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thread pool
by Migunov Andrey 20 Oct '08

20 Oct '08

Hi! I need to use a thread's pool in my program. There is no way to do it with boost::thread of current release. I found some libraries, but i don't know how quality is it. Please, advise me a good thread's pool library that is compatible with boost. best regards

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[graph] Sorted vertices in graph
by Tryptik 19 Oct '08

19 Oct '08

I am attempting to create a DAG with boost graph where the vertices are sorted. This would allow fast lookup by key - as in the following pseudo code: adjacency_list< setS, <custom_container or multisetS> bidirectionalS, Node_t> // struct that has the vertex data Graph; size_t find(const Graph& g, const T& t, std::vector<vertex_descriptor>& result) { std::pair<vertex_iterator, vertex_iterator> p = vertices(g); //The vertices are sorted vertex_iterator it = std::lower_bound(p.first, p.second, t); vertex_iterator end = std::upper_bound(p.first, p.second, t); std::vector<vertex_descriptor> tmp(it, end); result.swap(tmp); return result.size(); } My attempts to sort the actual vertices has been futile. I have tried using a mulitset as well as my own custom sorted container. I would like to avoid calling a seperate sort operation everytime a vertex is added, as this is a mutable graph - I was thinking I could insert the vertex into the sorted storage. Is there any way to make this work? Thanks -J __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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compile boost with mingw-w64
by hjedfgsf＠Safe-mail.net 19 Oct '08

19 Oct '08

Hello, I already sent this message to boost-users about 15 minutes ago. Unfortunately I did not receive a confirmation mail (probably a safe-mail issue), so I am trying it again... one of our customers wants us to compile a native Windows x64 build of our application. As we are using a lot of C++0x code, we are forced to use a Win64 port of gcc 4.x/MinGW (http://mingw-w64.sourceforge.net/) instead of the regular Visual Studio 8 x64 compiler. Unfortunately building boost with mingw-w64 fails. This is the build log: warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. Skipping build of: ./install <build>no in common properties Skipping build of: ./install <build>no in common properties Skipping build of: ./install <build>no in common properties Skipping build of: ./install <build>no in common properties ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_system-mgw44-mt-1_37.lib(clean) for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>error_code.o... ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_system-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>error_code.o... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_system-mgw44-mt-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44-mt.lib for lack of <pbuild\mingw-x64\lib>libboost_system-mgw44-mt-1_37.lib... ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>libboost_system-mgw44-1_37.lib(clean) for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>error_code.o... ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>libboost_system-mgw44-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>error_code.o... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>libboost_system-mgw44-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44.lib for lack of <pbuild\mingw-x64\lib>libboost_system-mgw44-1_37.lib... ...skipped <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_date_time-mgw44-mt-1_37.lib(clean) for lack of <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>greg_month.o... ...skipped <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_date_time-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>greg_month.o... ...skipped <pbuild\mingw-x64\lib>libboost_date_time-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_date_time-mgw44-mt-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_date_time-mgw44-mt.lib for lack of <pbuild\mingw-x64\lib>libboost_date_time-mgw44-mt-1_37.lib... ... ...skipped <pbuild\mingw-x64\lib>libboost_math_tr1f-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_tr1f-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_tr1l-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_tr1l-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_c99-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_c99-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_c99f-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_c99f-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_c99l-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_c99l-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_program_options-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_program_options-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_serialization-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_serialization-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_wserialization-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_wserialization-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_signals-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_signals-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_prg_exec_monitor-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_prg_exec_monitor-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_unit_test_framework-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_unit_test_framework-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_thread-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_thread-mgw44-mt-d-1_37.lib... ...skipped <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>libboost_wave-mgw44-mt-d-1_37.lib(clean) for lack of <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>instantiate_cpp_exprgrammar.o... ...skipped <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>libboost_wave-mgw44-mt-d-1_37.lib for lack of <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>instantiate_cpp_exprgrammar.o... ...skipped <pbuild\mingw-x64\lib>libboost_wave-mgw44-mt-d-1_37.lib for lack of <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>libboost_wave-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_wave-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_wave-mgw44-mt-d-1_37.lib... ...failed updating 2436 targets... Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties This is our build batch file. mingwvars simply adds the MinGW-w64/bin folder to the Path envionment variable. call mingwvars bjam --toolset=gcc --prefix=.\build\mingw-x64 --without-mpi --without-python --build-type=complete -address-model=64 install bjam --toolset=gcc --prefix=.\build\mingw-x64 --without-mpi --without-python --build-type=complete -address-model=64 clean rd /s /q .\bin.v2 What did we do wrong?

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compile boost with mingw-w64
by hjedfgsf＠Safe-mail.net 19 Oct '08

19 Oct '08

Hello, one of our customers wants us to compile a native Windows x64 build of our application. As we are using a lot of C++0x code, we are forced to use a Win64 port of gcc 4.x/MinGW (http://mingw-w64.sourceforge.net/) instead of the regular Visual Studio 8 x64 compiler. Unfortunately building boost with mingw-w64 fails. This is the build log: warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. Skipping build of: ./install <build>no in common properties Skipping build of: ./install <build>no in common properties Skipping build of: ./install <build>no in common properties Skipping build of: ./install <build>no in common properties ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_system-mgw44-mt-1_37.lib(clean) for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>error_code.o... ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_system-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>error_code.o... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_system-mgw44-mt-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44-mt.lib for lack of <pbuild\mingw-x64\lib>libboost_system-mgw44-mt-1_37.lib... ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>libboost_system-mgw44-1_37.lib(clean) for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>error_code.o... ...skipped <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>libboost_system-mgw44-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>error_code.o... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44-1_37.lib for lack of <pbin.v2\libs\system\build\gcc-mingw-4.4.0\release\link-static>libboost_system-mgw44-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_system-mgw44.lib for lack of <pbuild\mingw-x64\lib>libboost_system-mgw44-1_37.lib... ...skipped <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_date_time-mgw44-mt-1_37.lib(clean) for lack of <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>greg_month.o... ...skipped <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_date_time-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>greg_month.o... ...skipped <pbuild\mingw-x64\lib>libboost_date_time-mgw44-mt-1_37.lib for lack of <pbin.v2\libs\date_time\build\gcc-mingw-4.4.0\release\link-static\threading-multi>libboost_date_time-mgw44-mt-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_date_time-mgw44-mt.lib for lack of <pbuild\mingw-x64\lib>libboost_date_time-mgw44-mt-1_37.lib... ... ...skipped <pbuild\mingw-x64\lib>libboost_math_tr1f-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_tr1f-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_tr1l-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_tr1l-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_c99-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_c99-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_c99f-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_c99f-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_math_c99l-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_math_c99l-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_program_options-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_program_options-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_serialization-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_serialization-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_wserialization-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_wserialization-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_signals-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_signals-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_prg_exec_monitor-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_prg_exec_monitor-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_unit_test_framework-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_unit_test_framework-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_thread-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_thread-mgw44-mt-d-1_37.lib... ...skipped <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>libboost_wave-mgw44-mt-d-1_37.lib(clean) for lack of <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>instantiate_cpp_exprgrammar.o... ...skipped <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>libboost_wave-mgw44-mt-d-1_37.lib for lack of <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>instantiate_cpp_exprgrammar.o... ...skipped <pbuild\mingw-x64\lib>libboost_wave-mgw44-mt-d-1_37.lib for lack of <pbin.v2\libs\wave\build\gcc-mingw-4.4.0\debug\link-static\threading-multi>libboost_wave-mgw44-mt-d-1_37.lib... ...skipped <pbuild\mingw-x64\lib>libboost_wave-mgw44-mt-d.lib for lack of <pbuild\mingw-x64\lib>libboost_wave-mgw44-mt-d-1_37.lib... ...failed updating 2436 targets... Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties This is our build batch file. mingwvars simply adds the MinGW-w64/bin folder to the Path envionment variable. call mingwvars bjam --toolset=gcc --prefix=.\build\mingw-x64 --without-mpi --without-python --build-type=complete -address-model=64 install bjam --toolset=gcc --prefix=.\build\mingw-x64 --without-mpi --without-python --build-type=complete -address-model=64 clean rd /s /q .\bin.v2 What did we do wrong?

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[boost-asio] : serial ports
by Mathieu Peyréga 19 Oct '08

19 Oct '08

Hello, is there further documentation available somewhere for asio serial port components... ? especially about options setting... by the way, is there a portable way (or way on Windows, Mac, and Linux platforms to retrive serial ports list) ? I found some code for windows while googling but nothing for other platforms... best regards Mathieu

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ublas list broken?
by Benson Margulies 19 Oct '08

19 Oct '08

I just sent a message to the ublas list, and was rewarded with an error bound describing a mail forwarding loop.

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Re: [Boost-users] Where is the numeric/bindings package?
by Rodolfo Federico Gamarra 19 Oct '08

19 Oct '08

Hi Peng, I can't figure out exactly what you're refering to. In which way are you trying to find the package (src, doc, download, etc.), and where (in the web, in tar.gz)? So far, in Boost's main homepage there are no news about this package, nor in 1.36's one (http://www.boost.org/users/news/version_1_36_0) Are you talking about this package? http://www.boost.org/doc/libs/1_36_0/libs/numeric/ublas/doc/index.htm or these ones? http://www.boost.org/doc/libs/1_36_0/libs/numeric/conversion/doc/html/index… http://www.boost.org/doc/libs/1_36_0/libs/bind/bind.html I think that it'd be useful if you're a little more specific, or may it's just I'm not seeing something. I hope you find'em. Thanks, Rodolfo. > > > Message: 8 > Date: Sat, 18 Oct 2008 19:16:33 -0500 > From: "Peng Yu" <pengyu.ut(a)gmail.com> > Subject: [Boost-users] Where is the numeric/bindings package? > To: boost-users(a)lists.boost.org > Message-ID: > <366c6f340810181716t4bcf154dhfb05852063269e5d(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hi, > > I can not find the numeric/bindings package in boost 1.36.0. Can somebody > let me know where it is? > > Thanks, > Peng > -- Rodolfo Federico Gamarra

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Re: [Boost-users] [Proto] Extracting types of sub-expression in transform
by Ivan Godard 19 Oct '08

19 Oct '08

Eric Niebler wrote: Joel Falcou wrote: > > Hello, > > > > i have a DSL where terminal are defined like : terminal< simd<proto::_> > > > What I want is that any binary operator that apply on those terminal should > > be available only if both lhs and rhs parts have the same underlying > > type. E.G : > > > > simd<float> + simd<float> is ok while > > (simd<char> + simd<char>)*simd<float> is not ok. > > > > How I can enforce this check ? Is having a transform that take an > > expression and returns > > the underlying type OR mpl::void_ if an error occurs the good solution ? > This question has come up a couple of times. The solution isn't very pretty ... write a grammar that allows expressions with incompatible terminals, and then write a separate transform that checks the terminals for compatibility. This issue came up during Proto's review and I posted some example code here (see the SameTerminals transform): http://lists.boost.org/Archives/boost/2008/03/135169.php I wish I knew of a better solution. The canonical way to incorporate typing (including much richer type systems than this) in a formal grammar is through van Wijngaarden grammars. See http://en.wikipedia.org/wiki/Algol68. It is possible to generate both the parser and type analysis from such a grammar, and compilers that do so still exist. Sadly, there is no Boost VWG library. Perhaps you'll write one?

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[thread_safe_signals][signals2] review Nov 1st - Nov 10th
by Stjepan Rajko 19 Oct '08

19 Oct '08

Just a brief note: Thanks to the 5 reviewers that have signed up to review the Signals2 library (formerly known as thread_safe_signals) submitted by Frank Mori Hess, the review will happen as planned: November 1st - November 10th. Many thanks to the committed reviewers, and I hope other interested boosters that find some free time during the review period will be joining us as well. Kind regards, Stjepan

1 0

Apple iPod uses Boost
by Alexander Gutenev 19 Oct '08

19 Oct '08

Apple iPod uses Boost. At least looks like that.There's 'legal' in menu, where some software licenses are listed, the last one is Boost Software License. This may help someone to convince boss that Boost libraries are needed for any project, as they are used even in such tiny and useless thing ;-)

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Where is the numeric/bindings package?
by Peng Yu 19 Oct '08

19 Oct '08

Hi, I can not find the numeric/bindings package in boost 1.36.0. Can somebody let me know where it is? Thanks, Peng

1 0

Re: [Boost-users] Apple iPod uses Boost
by Robert Marion 18 Oct '08

18 Oct '08

> From: Gennaro Prota > Subject: Re: [Boost-users] Apple iPod uses Boost > > Well, of course Boost isn't the only library using the Boost > Software License. And, are they distributing the sources? > Otherwise I don't see why reproducing the license. I haven't seen the Boost License being used outside of Boost, although certainly the license can be applied to any open source software. Since the Boost license is similar to the BSD style license, it is likely that an open source project would choose one of the more popular BSD or MIT style licenses. Also, the Boost license does not require that source be available for distribution. That is a characteristic of GPL, LGPL and other copyleft licenses. The Boost license is an attribution license. See http://www.boost.org/users/license.html. ________________________________ Robert Marion http://www.palamida.com

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Must cast unsigned int for random generator seed
by Phillip Jones 18 Oct '08

18 Oct '08

I wanted to save the initial state of a random number generator and I ran into this issue - boost::mt19937 rng; unsigned int rseed = static_cast<unsigned int>(std::time(0)); //rng.seed( rseed ); // This causes an error rng.seed( static_cast<unsigned int>(rseed) ); // ok The error is "mersenne_twister.hpp:103: error: `gen' cannot be used as a function". Obviously not a big problem since I can just use the cast and keep going. But is there a reason for this behavior? It seems odd that one must cast an unsigned int as an unsigned int to make it work.

2 1

[Proto] Extracting types of sub-expression in transform
by Joel Falcou 18 Oct '08

18 Oct '08

Hello, i have a DSL where terminal are defined like : terminal< simd<proto::_> > What I want is that any binary operator that apply on those terminal should be available only if both lhs and rhs parts have the same underlying type. E.G : simd<float> + simd<float> is ok while (simd<char> + simd<char>)*simd<float> is not ok. How I can enforce this check ? Is having a transform that take an expression and returns the underlying type OR mpl::void_ if an error occurs the good solution ? Thanks in advance -- ___________________________________________ Joel Falcou - Assistant Professor PARALL Team - LRI - Universite Paris Sud XI Tel : (+33)1 69 15 66 35

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Re: [Boost-users] return type of boost::iostreams::stream<T>::read()
by Struebing, Axel, le-tex 18 Oct '08

18 Oct '08

okay, it's within my grasp now. Primarily I get a basic_istream. To facilitate the 'while std::cin' idiom, there is a conversion of basic_istream to void* defined. That seems to hit me in my example. FYI: std::streamsize i = istr.read(buffer,10); is calling the read-function of my DeviceT template parameter, perfect. So I am probably going to use a read + gcount-combination. Thanks again Axel > Hallo Éric, > > although it is not an exact fit it will be of value in evaluating my > options. > > kind regards > Axel Strübing > > > > Reading the documentation about boost::iostreams library I could not > > > find the information which return type the boost::iostreams::stream's > > > class is giving me calling read(). > > > > > >From the documentation, a boost::iostreams::stream derives from an > > > std::basic_[i|o]stream, depending on the model of its underlying > > > Device. In your example, the device is a Source, so I guess that the > > > stream derives from std::basic_istream, whose read(char*, streamsize) > > > method returns a basic_istream, not a streamsize. > > > > The library offers the "streamsize read(stream, char*, streamsize)" > > function template. Using it in your example yould give something like > > (not tested): > > > > #include <boost/iostreams/stream.hpp> > > #include <boost/iostreams/device/file.hpp> > > #include <boost/iostreams/operations.hpp> > > > > int main(void){ > > namespace bio = boost::iostreams; > > bio::stream<bio::file_source> istr(std::string("in.pdf")); > > char buffer[10]; > > std::streamsize i = bio::read(istr,buffer,10); > > return 0; > > } > > > > > > HTH, > > > > Éric Malenfant > > --------------------------------------------- > > Two wrongs don't make a right but three rights make a left. > > --

1 0

nested template tests using boost.test BOOST_AUTO_TEST_CASE_TEMPLATE
by johanngoetz 18 Oct '08

18 Oct '08

It seems that one cannot do nested AUTO_TEST_CASE_TEMPLATE's with boost.test. Is there another way around this (besides unrolling manually)? I wish to do something like the following: i.e. testing every combination of two (or more?) lists of types. Example below. Thank you, Johann. define BOOST_TEST_MODULE std_map #define BOOST_TEST_DYN_LINK #include <map> #include <boost/test/unit_test.hpp> #include <boost/test/test_case_template.hpp> #include <boost/mpl/list.hpp> typedef boost::mpl::list<short, int, long, long long> test_int_types; typedef boost::mpl::list<float, double, long double> test_float_types; BOOST_AUTO_TEST_SUITE( std_map_suite ) BOOST_AUTO_TEST_CASE_TEMPLATE( int_template_case, Ti, test_int_types ) { BOOST_AUTO_TEST_CASE_TEMPLATE( float_template_case, Tf, test_float_types ) { std::map<Ti, Tf> m; m.insert(std::make_pair((Ti)0,(Tf)0)); BOOST_CHECK_EQUAL(m.size(), size_t(1)); } } BOOST_AUTO_TEST_SUITE_END() -- View this message in context: http://www.nabble.com/nested-template-tests-using-boost.test-BOOST_AUTO_TES… Sent from the Boost - Users mailing list archive at Nabble.com.

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Using boost.signals with boost.bind
by Sergey Kishchenko 18 Oct '08

18 Oct '08

Hi, I have one problem with boost.bind and boost.signals I can't understand. Source code is the best description, therefore #include <iostream> #include <boost/signals.hpp> #include <boost/shared_ptr.hpp> #include <boost/bind.hpp> class Func : public boost::noncopyable { public: void operator()(int i) { std::cout<<"Func::operator("< signal_type; Func f; signal_type::slot_type binded_func = boost::bind<void>(boost::ref(f),42); int main() { boost::shared_ptr<signal_type> apSig(new signal_type()); apSig->connect(binded_func); (*apSig)(); apSig.reset(new signal_type()); boost::signals::connection con = apSig->connect(binded_func); std::cout<<"Connected: "<<con.connected()<<" Blocked: "<<con.blocked()<<"\n"; } Program output: Func::operator(42) Connected: 0 Blocked: 1 Ie, if i create new signal and then try to connect to the same slot, it fails. If I use not boost::bind object but only boost::function as slot, all works ok. I can not understand, why? I used Boost 1.34.1, gcc 4.1.2 Regards, Sergey Kishchenko

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Re: [Boost-users] boost::mpl::set and boost::mpl::sort -- does not compile -- any help appreciated
by peter_foelsche＠agilent.com 17 Oct '08

17 Oct '08

I found the answer meanwhile. Peter #include <boost/mpl/set.hpp> #include <boost/mpl/sort.hpp> #include <boost/mpl/inserter.hpp> #include <boost/mpl/insert.hpp> #include <boost/mpl/placeholders.hpp> #include <boost/mpl/front.hpp> #include <boost/mpl/deref.hpp> #include <boost/mpl/for_each.hpp> #include <iostream> typedef boost::mpl::set< boost::mpl::int_<1>, boost::mpl::int_<5>, boost::mpl::int_<3>, boost::mpl::int_<0> > CSet; typedef boost::mpl::inserter< boost::mpl::set<>, boost::mpl::insert<boost::mpl::_1, boost::mpl::_2> > CInserter; typedef boost::mpl::sort< CSet, boost::mpl::less< boost::mpl::_1, boost::mpl::_2 >, CInserter >::type COrderedSet;

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boost::mpl::set and boost::mpl::sort -- does not compile -- any help appreciated
by peter_foelsche＠agilent.com 17 Oct '08

17 Oct '08

Somehow I need an ordered set. How to do this? Any help appreciated. Peter #include <boost/mpl/set.hpp> #include <boost/mpl/sort.hpp> typedef boost::mpl::sort< boost::mpl::set< boost::mpl::int_<1>, boost::mpl::int_<5>, boost::mpl::int_<3> > >::type CFirstSet; int main(int argc, char **argv) { CFirstSet s; } "The first point (using an init() function in preference to a constructor) is bogus. Using constructors and exception handling is a more general and systematic way of dealing with resource acquisition and initialization errors. This style is a relic of pre-exception C++." -- Stroustrup

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[Thread] Bug in 1.35.0 and 1.36.0 timed wait code.
by Ross Wightman 17 Oct '08

17 Oct '08

I posted this shortly after the 1.36.0 release but I neglected to put the [thread] tag in the subject. Since I noticed 1.37 is already being finalized I figured I'd post again. There is a bug in the get_due_time(...) function in lib/src/win32/thread.cpp line 343 when boost::date_time is setup to have nanosecond resolution. The integer division always results in a due_time of 0 so the timed waits never wait. I fixed my local copy by changing the order of operations but I haven't investigated to see if this could cause an overflow in situations where nanosecond time resolution has not been configured. In general I question whether it was a good idea to have the threading library depend on date_time? There is a lot of functionality and code in date_time that the thread library doesn't need. The C++0x standard suggests a much simpler system_time class. While there is overlap between such a system_time class and the date_time class, the smaller compile time / code size costs and lower chance of bugs when only using the threading library seems worth it. Regards, Ross

1 0

Difficulty compiling - ASIO/BIND
by David 17 Oct '08

17 Oct '08

Hi, I'm trying to use asio, and I run into a compiler error when using async_connect. I don't think this is an asio issue, perhaps a compiler or bind issue. Errors and code snippet below. I'm perplexed by the error, as apparently the compiler can't if 'this' should be passed as a pointer, or by reference. I also tried alternate syntax using bind and mem_fn as mentioned in the bind docs, but that gave exactly the same error. What's causing this error, and what can I do to fix it? using gcc 4.2.3: .../boost_1_36_0/boost/bind.hpp:292: error: no match for call to ‘(boost::_mfi::mf1<void, Connection, boost::system::error_code&>) (Connection*&, boost::asio::error::basic_errors&)’ .../boost_1_36_0/boost/bind/mem_fn_template.hpp:160: note: candidates are: R boost::_mfi::mf1<R, T, A1>::operator()(T*, A1) const [with R = void, T = Connection, A1 = boost::system::error_code&] .../boost_1_36_0/boost/bind/mem_fn_template.hpp:179: note: R boost::_mfi::mf1<R, T, A1>::operator()(T&, A1) const [with R = void, T = Connection, A1 = boost::system::error_code&] //code class Connection { public: //... void onConnected(boost::system::error_code&); //... }; _socket.lowest_layer().async_connect(*_epit, boost::bind(&Connection::onConnected, this, placeholders::error));

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Collections versus std::map
by Benson Margulies 17 Oct '08

17 Oct '08

I'm looking for a fast sparse array that permits ordered traversal of the occupied slots. std::map is much too slow. boost multi-index with a sequenced index on an unsigned int is significantly slower even that the std::map, which isn't too surprising given the writeup. Is there something else in boost that fills this space?

2 3

serialize a template class working with MSVC2005 but not gcc
by professor rumsdiegeige 17 Oct '08

17 Oct '08

Hello, I've got the following class definition: template< class T > class ProxyClass { boost::ptr_vector<T> &e_; ProxyClass( boost::ptr_vector<T> &f ) : e_(f) {;}; template<class Archive> void save(Archive & ar, const unsigned int version) const { size_t o=0; boost::ptr_vector< T >::iterator it = e_.begin(); /*for ( ; it != e_.end(); ++it, ++o ) { const T &t = *( it ); ar & t; }*/ } }; Where it says "boost::ptr_vector< T >::iterator it", the gcc compiler on Linux complains "error: expected ';' before 'it'", while Visual Studio 2005 compiles it fine without any errors. What can I do here? Thanks in advance for your help! S. Lorentz __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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cpp code and Boost.Interprocess compile error
by hamsinv 17 Oct '08

17 Oct '08

Hello All, I was looking for using stl maps in shared memory, when i came across Boost library. I have downloaded boost_1_36_0 version. In the examples directory, there is a cpp file for sharing stl maps named doc_map.cpp. When i compile the same with the following command: c++ -I $BOOST_ROOT doc_map.cpp -o shmmap I got the following errors: /tmp/ccEYJnov.o: In function `boost::interprocess::shared_memory_object::priv_open_or_create(boost::interprocess::detail::create_enum_t, char const*, boost::interprocess::mode_t)': doc_map.cpp:(.text._ZN5boost12interprocess20shared_memory_object19priv_open_or_createENS0_6detail13create_enum_tEPKcNS0_6mode_tE[boost::interprocess::shared_memory_object::priv_open_or_create(boost::interprocess::detail::create_enum_t, char const*, boost::interprocess::mode_t)]+0x163): undefined reference to `shm_open' /tmp/ccEYJnov.o: In function `boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)': doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperC1Eb[boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)]+0x14): undefined reference to `pthread_mutexattr_init' doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperC1Eb[boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)]+0x2b): undefined reference to `pthread_mutexattr_setpshared' doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperC1Eb[boost::interprocess::detail::mutexattr_wrapper::mutexattr_wrapper(bool)]+0x4d): undefined reference to `pthread_mutexattr_settype' /tmp/ccEYJnov.o: In function `boost::interprocess::detail::mutexattr_wrapper::~mutexattr_wrapper()': doc_map.cpp:(.text._ZN5boost12interprocess6detail17mutexattr_wrapperD1Ev[boost::interprocess::detail::mutexattr_wrapper::~mutexattr_wrapper()]+0xd): undefined reference to `pthread_mutexattr_destroy' /tmp/ccEYJnov.o: In function `boost::interprocess::shared_memory_object::remove(char const*)': doc_map.cpp:(.text._ZN5boost12interprocess20shared_memory_object6removeEPKc[boost::interprocess::shared_memory_object::remove(char const*)]+0x33): undefined reference to `shm_unlink' collect2: ld returned 1 exit status Can anyone please tell me what i'm missing in the compilation. Thank you. -- View this message in context: http://www.nabble.com/cpp-code-and-Boost.Interprocess-compile-error-tp20012… Sent from the Boost - Users mailing list archive at Nabble.com.

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boost::numeric::interval - what are interval_holder and number_holder for?
by Stephan Puchegger 17 Oct '08

17 Oct '08

Dear boost members! Perhaps the main boost developer mailing list would be the better place to ask this question, but I'll try it here first: I cannot find any references to interval_holder and number_holder, which are defined in boost/numerics/interval/interval.hpp in any other files of the boost library. Are those two structures deprecated remains of a previous boost release? (The last time I checked they were still in trunk of the svn repository.) regards Stephan

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[format] crash on windows / inquiry
by Tore Halvorsen 17 Oct '08

17 Oct '08

Hi, I just wondering about two things with the format library. 1) The following program crashes on windows - is this intentional? #include <boost/format.hpp> int main(int argc, char* argv[]) { boost::format f("%s %s"); f.exceptions(boost::io::no_error_bits); // not needed, but just in case char const* null_cstr = 0; char const* empty_cstr = ""; f % empty_cstr; // triggers debug assertion failure f % null_cstr; // triggers access violation return EXIT_SUCCESS; } The debug assertion failure only happens on a debug build, of course. I can understand the access violation on a null string, but that feature makes it unsuitable for a sprintf replacement. 2) Is there a way to determine the number of expected arguments in a format object? Looks like the basic_format::num_args_ is exactly what I'm looking for, but I can't find this exposed anywhere. Going through a loop and catching exceptions is one way of getting the number of expected arguments, but it feels wrong. -- Eld på åren og sol på eng gjer mannen fegen og fjåg. [Jøtul] <demo> 2008 Tore Halvorsen || +052 0553034554

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shared_ptr singleton
by Alessandro Re 17 Oct '08

17 Oct '08

Hello, I'm getting some troubles with shared_ptr when trying to implement a singleton pattern. Actually, it's not the singleton itself (which seems to work, in a separate program), but in the context I need it, doesn't work. I tried to figure out why (and actually I found an alternative implementation which works), but still I'm trying to understand what goes wrong. I'm trying to do this: having a hierarchy of classes where there is one Base class and a number of derived ones, each class is in a different cpp file. All these classes must be registered in a Register class, which is itself derived from Object. Register is the singleton, implemented like this: class Register; typedef shared_ptr<Register> RegisterP; class Register: public Object { public: Register(); void add(string name) { // Stuff with name } static RegisterP global() { if (!_global) _global = RegisterP(new Register); // * return _global; } private: static RegisterP _global; }; To register the various classes, does exist a special class, not in hierarchy, like this: class ClassRegisterer { public: ClassRegisterer::ClassRegisterer(string name) { Register::global()->register(name); // ** } } #define REGISTER(C) ClassRegisterer _registerClass_ ## C ( #C) In each file of the of the project, this macro is used when a class is created: Foo.cpp class Foo: public Object {...}; REGISTER(Foo); Bar.cpp class Bar: public Object {...}; REGISTER(Bar); This is also used for the Register class itself: Register.cpp class Register: public Object {...}; REGISTER(Register); The problem is that global() is called N times, but the new Register (*) is executed twice, instead of once. Investigating with some couts, I found out that - dunno why - the pointer _global is set to 0 after the first execution, in fact at the time of second execution it's created another object, which isn't deleted and is kept. Trying quickly with a debugger, it seems that at (**) a destructor for shared_ptr is called, and I think that it may be the cause of the issue, but I'm having an hard time figuring this out and *why* a destructor is called (maybe it's just for a temporary object). Looking at boost docs, i found out this: http://www.boost.org/doc/libs/1_35_0/libs/smart_ptr/sp_techniques.html#stat… so I tried to use that null deleter, like this: struct nullDeleter { void operator()(void const *p) const { cout << "Trying to delete " << p << endl; } }; and used like: if (!_global) _global = RegisterP(new Register, nullDeleter()); The problem is that this is never called! The object is never destroyed by this, but somehow the static _global is set to 0 (only once), and thus allocated twice. I temporary solved this using a static raw pointer, which is allocated once and a shared_ptr is built with it: class Register { ... static RegisterP global() { if (!_global) _global = new Register; return RegisterP(_global, nullDeleter()); } ... static Register *_global; }; Which works. Any suggestion is welcome :) Thanks -- ~Ale

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1.36.0 boost/random/uniform_01 Infinite[?] Loop
by Dave Steenburgh 17 Oct '08

17 Oct '08

I'm sure everyone will think I'm crazy, but here goes... Background: I came across this problem while developing a proof of concept for my master's project. It entails generating random numbers according to either a uniform or a normal distribution. I wrote a few wrapper classes to simplify dealing with the generators and distributions. Those wrapper classes let me do this: randomGenerator *rg; if(uniformDistribution) rg = new uniformGenerator(); else rg = new normalGenerator(); (I also have constructors that take arguments to alter the range of values, but I'm not using them presently.) Then I can retrieve values like so: (*rg)() uniformGenerator and normalGenerator inherit from randomGenerator, and are wrappers for these: boost::variate_generator<boost::minstd_rand&, boost::uniform_real<> > boost::variate_generator<boost::minstd_rand&, boost::normal_distribution<> > I currently have two programs that use those wrapper classes. One is fairly minimal; it simply parses some command line arguments that affect the distribution and quantity, then retrieves the values and prints them to stdout. The other program is my proof of concept; it does the same argument parsing (with a few more options), then makes use of the values to run my simulation, which is mostly manipulating STL containers. Problem: Now we come to the crazy part. I work mostly on one of two Windows machines, using g++ under Cygwin. On either machine, both of those programs run to completion every time, if I compile with -O1, -O2, or -O3. However, if I use -O0 (or just no -O argument), then the simulation locks up. The other program---that just prints random numbers---never locks up. (Incidentally, this program was my attempt to create a minimal program that replicated the behavior.) By single-stepping with gdb, I determined that it gets stuck in boost/random/uniform_01.hpp: 58 for (;;) { 59 result_type result = result_type(_rng() - (_rng.min)()) * _factor; 60 if (result < result_type(1)) 61 return result; 62 } gdb shows that result is always equal to 1, which of course leads to an infinite loop. Single-stepping through all of the code directly related to the random generators shows the same sequence of instructions for both programs. If I use the uniform distribution, it gets stuck when I try to retrieve the second value. If I use the normal distribution, it gets stuck on the third retrieval. Also worth noting, by default the generators are supplied with a different seed value every time I run either program. Getting back to the programming environment, when I build on the Solaris machines in my school's CS department, the program never gets stuck. For my part, it's exactly the same source, and I still use g++. I have not been able to coerce any warnings or errors from the compiler. So, I'm all out of ideas. I'm open to suggestions for fixing this, but I'm hoping the solution is less extreme than compiling gcc from source.

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Problem in compiling simple boost mpl program
by Missing Rainbow 16 Oct '08

16 Oct '08

Hi All, I am making use of boost 1.32.0 (as given in the MPL book CD). I have written a small program using mpl::vector. I am getting the following error. What could be the problem? (begin-quote) lotus 241 $ CC -I$BOOST_ROOT -c hello.c "/backup/dev_area/anna/mplbookcd/boost_1_32_0/boost/mpl/if.hpp", line 63: Warning (Anachronism): Type names qualified by template parameters require "typename". "/backup/dev_area/anna/mplbookcd/boost_1_32_0/boost/mpl/if.hpp", line 72: Where: While specializing "boost::mpl::if_<boost::mpl::T1, boost::mpl::T2, boost::mpl::T3>". "/backup/dev_area/anna/mplbookcd/boost_1_32_0/boost/mpl/if.hpp", line 72: Where: Specialized in non-template code. "/backup/dev_area/anna/mplbookcd/boost_1_32_0/boost/mpl/aux_/preprocessed/no_ttp/plus.hpp", line 148: Warning (Anachronism): Type names qualified by template parameters require "typename". "/backup/dev_area/anna/mplbookcd/boost_1_32_0/boost/mpl/aux_/preprocessed/no_ttp/minus.hpp", line 148: Warning (Anachronism): Type names qualified by template parameters require "typename". "/backup/dev_area/anna/mplbookcd/boost_1_32_0/boost/mpl/vector/aux_/iterator.hpp", line 92: Error: Partial specialization parameter m_ is not used in the arguments. "hello.c", line 4: Error: mpl is not defined. "hello.c", line 4: Warning (Anachronism): Using vector as a template without a declaration. "hello.c", line 4: Error: vector is not defined. 3 Error(s) and 4 Warning(s) detected. lotus 242 $ cat hello.c #include "boost/mpl/vector.hpp" typedef mpl::vector<int, char*, double& > seq; lotus 243 $ CC -V CC: Sun C++ 5.5 2003/03/12 lotus 244 $ uname -a SunOS lotus 5.10 Generic_125100-09 sun4v sparc SUNW,Sun-Fire-T200 lotus 245 $ (end-quote) Rgds, anna

2 1

MPL: Lazy Evaluation and Nullary Metafunction
by Missing Rainbow 16 Oct '08

16 Oct '08

Hi All, I am reading about the lazy evaluation and nullary metafunction in the MPL book. While discussing the lazy evaluation technique the following code is presented (page 57): struct add_pointer_f { template <class T> struct apply : boost::add_pointer<T> {}; }; typedef mpl::vector<int, char*, double&> seq; typedef mpl::transform<seq, boost::add_pointer<_> > calc_ptr_seq; The point of the above code was to demonstrate that the nullary metafunction calc_ptr_seq represents the sequence "int*, char**, double&*", even though the last element in that sequence is not valid. Thanks to lazy evaluation. As long as we don't access the third element in the sequence represented by calc_ptr_seq, everything should work fine. Is my understanding correct? Also, other than nullary metafunction, is there any other approach to lazy evaluation? Or will lazy evaluation _always_ be implemented with the help of nullary metafunction? Thank you. Rgds, anna

2 1

help downloading Version 1.31.0
by Vishakh Paul Thomas 16 Oct '08

16 Oct '08

Hi I'd like to download boost Version 1.31.0 as that's what my app used earlier. We are porting the app to Linux from solaris and I do not want to try using the latest one as I am unaware of the dependencies. I looked around on boost.org and was unable to find any link to download it. Can you please let me know where I can find it? Thanks! Vishakh

2 1

boost.program_options - reloading configuration file
by Aljaz 16 Oct '08

16 Oct '08

Hello I want to implement function in my application which would allow me to reload the configuration file. At the moment I have all neccessary program_options objects inside a configuration class, and when I do: bool configuration::reload_config_file(std::string filename) { try { std::ifstream ifs(filename.c_str()); if (!ifs.is_open()) return false; boost::program_options::store(boost::program_options::parse_config_file(ifs, m_config), m_variables); boost::program_options::notify(m_variables); ifs.close(); } catch (std::exception &e) { return false; } return true; } The options will stay the same although the configuration file is different. Should I somehow clear the m_variables object? Many thanks in advance!

1 1

[1.35] LINK problems since I switch to wpath
by Germain BARRET 16 Oct '08

16 Oct '08

Hi, I'm still using Boost 1.35 on VC++ 2005 I had a code very well building and linking, only I had some charset problems at display. That's why I decided to switch my code to UNICODE (or like) switching all the std::string -> std::wstring In the area of boost, I also switched all the boost::filesystem::path -> boost::filesystem::wpath that was a long job, many particular cases were found for example, problemes with : boost::filesystem::exists boost::filesystem::current_path boost::filesystem::initial_path That I commented to compile. Here comes my main question !!!! Now I have some LINK problems. The librairy very well worked before, but no more now. See the error logs at the end. According to the linking log, here are the names of the libs I use (as you can see, that are STATIC Multi thread libs and that is what I want) : libboost_filesystem-vc80-mt-sgd-1_35.lib libboost_system-vc80-mt-sgd-1_35.lib libboost_thread-vc80-mt-sgd-1_35.lib libboost_date_time-vc80-mt-sgd-1_35.lib The link problems are on : boost::filesystem::detail::status_api boost::filesystem::detail::dir_itr_increment boost::filesystem::detail::dir_itr_first Error logs : Error 2 error LNK2019: unresolved external symbol "class boost::filesystem::file_status __cdecl boost::filesystem::detail::status_api(class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > const &,class boost::system::error_code &)" (?status_api@detail @filesystem@boost@@YA?AVfile_status@23@ABV?$basic_string@GU?$char_traits@G @std@@V?$allocator@G@2@@std@@AAVerror_code@system@3@@Z) referenced in function "bool __cdecl boost::filesystem::is_regular<class boost::filesystem::basic_path<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >,struct boost::filesystem::wpath_traits> >(class boost::filesystem::basic_path<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >,struct boost::filesystem::wpath_traits> const &)" (??$is_regular@V ?$basic_path@V?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@ @Uwpath_traits@filesystem@boost@@@filesystem@boost@@@filesystem@boost @@YA_NABV?$basic_path@V?$basic_string@GU?$char_traits@G@std@@V?$allocator@G @2@@std@@Uwpath_traits@filesystem@boost@@@01@@Z) DirectoryInfoManager.obj Error 3 error LNK2001: unresolved external symbol "class boost::filesystem::file_status __cdecl boost::filesystem::detail::status_api(class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > const &,class boost::system::error_code &)" (?status_api@detail @filesystem@boost@@YA?AVfile_status@23@ABV?$basic_string@GU?$char_traits@G @std@@V?$allocator@G@2@@std@@AAVerror_code@system@3@@Z) Patch.obj Error 4 error LNK2019: unresolved external symbol "class boost::system::error_code __cdecl boost::filesystem::detail::dir_itr_increment(void * &,class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > &,class boost::filesystem::file_status &,class boost::filesystem::file_status &)" (?dir_itr_increment@detail@filesystem@boost@@YA?AVerror_code@system @3@AAPAXAAV?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@ @AAVfile_status@23@2@Z) referenced in function "private: void __thiscall boost::filesystem::basic_directory_iterator<class boost::filesystem::basic_path<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >,struct boost::filesystem::wpath_traits> >::increment(void)" (?increment@ ?$basic_directory_iterator@V?$basic_path@V?$basic_string@GU?$char_traits@G @std@@V?$allocator@G@2@@std@@Uwpath_traits@filesystem@boost@ @@filesystem@boost@@@filesystem@boost@@AAEXXZ) Patch.obj Error 5 error LNK2019: unresolved external symbol "class boost::system::error_code __cdecl boost::filesystem::detail::dir_itr_first(void * &,class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > const &,class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > &,class boost::filesystem::file_status &,class boost::filesystem::file_status &)" (?dir_itr_first@detail@filesystem@boost@@YA?AVerror_code@system@3@AAPAXABV ?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@ @AAV67@AAVfile_status@23@3@Z) referenced in function "private: class boost::system::error_code __thiscall boost::filesystem::basic_directory_iterator<class boost::filesystem::basic_path<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >,struct boost::filesystem::wpath_traits> >::m_init(class boost::filesystem::basic_path<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >,struct boost::filesystem::wpath_traits> const &)" (?m_init@ ?$basic_directory_iterator@V?$basic_path@V?$basic_string@GU?$char_traits@G @std@@V?$allocator@G@2@@std@@Uwpath_traits@filesystem@boost@ @@filesystem@boost@@@filesystem@boost@@AAE?AVerror_code@system@3@ABV ?$basic_path@V?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@ @Uwpath_traits@filesystem@boost@@@23@@Z) Patch.obj

2 1

asio and usb ports?
by Graham Reitz 16 Oct '08

16 Oct '08

Is the asio::serial_port library able to work with usb ports/devices? Thanks, graham

2 1

Re: [Boost-users] Error:" Non-const function called for const object" on Sun CC while using boost::multi_index::multi_index_container
by Alexander Vinokur 16 Oct '08

16 Oct '08

Done. Now it works fine. % CC -m64 -library=stlport4 -I./boost_patch -I/home/BOOST/boost_1_34_0 foo1.cpp // No problem Thanks, Alex Vinokur "JOAQUIN M. LOPEZ MU?OZ" <joaquin(a)tid.es> wrote in message news:<D1B8B06869125E44A4B33FF31CBAEA591187ADF181(a)EXCLU2K7.hi.inet>... ________________________________________ De: Alexander Vinokur [Alexander.Vinokur(a)amdocs.com] Enviado el: domingo, 12 de octubre de 2008 8:44 Para: boost-users(a)lists.boost.org CC: JOAQUIN M. LOPEZ MU?OZ Asunto: Re: Error:" Non-const function called for const object" on Sun CC = while using boost::multi_index::multi_index_container > > Hi Joaqu?n, > > I was out of office several days. Sorry. > So, I send my reply today. No problem at all :) > I don't have permissions to change something under /boost. Maybe you can still perform the test by doing the following: 1 Create a local folder structure more or less like this: ~alex/boost_patch/boost/detail and copy there the allocator_utilities.hpp modified file I sent you previ=usly. 2 When compiling your multi-index example add a compiler option (or IDE setting, etc.) so that ~alex/boost_patch/ is added to the list of include directories *and* takes precedence over the official copy of Boos=. If you finally manage to do the test please report back your results. > But here other test I did: [example core snipped] I take this a sufficient evidence that the patch should work, so I went ahe=d and added it to the trunk: http://svn.boost.org/trac/boost/changeset/49289 If nothing wrong happens with the patch, it'll be shipped with Boost 1.38. Joaqu?n M L?pez Mu?oz Telef?nica, Investigaci?n y Desarrollo ---------- This message and the information contained herein is proprietary and confidential and subject to the Amdocs policy statement, you may review at http://www.amdocs.com/email_disclaimer.asp

2 1

Iostreams tag dispatch failure?
by Stéphane Perras 16 Oct '08

16 Oct '08

Hi all, I've been trying to compile the container_source example from the boost/iostreams documentation for a couple of days actually without success. It seems to me that tag dispatching fails to dispatch the default (for any_tag) implementation for optimal_buffer_size( ), imbue( ) and flush( ). I'm using Visual C++ 2005 SP1. I saw one unanswered posting about this exact problem early 2007, but on GCC. So I guess from this that I'm missing something obvious. Thanks for any help. Steph. Ps: code and build log following. #include "stdafx.h" #include <algorithm> // copy, min #include <iosfwd> // streamsize #include <boost/iostreams/categories.hpp> // source_tag #include <boost/iostreams/stream.hpp> #include <string> template<typename Container> class container_source; template<typename Container> class container_source { public: typedef typename Container::value_type char_type; typedef boost::iostreams::source_tag category; container_source(Container& container) : container_(container), pos_(0) { } std::streamsize read(char_type* s, std::streamsize n) { using namespace std; streamsize amt = static_cast<streamsize>(container_.size() - pos_); streamsize result = (min)(n, amt); if (result != 0) { std::copy( container_.begin() + pos_, container_.begin() + pos_ + result, s ); pos_ += result; return result; } else { return -1; // EOF } } Container& container() { return container_; } private: typedef typename Container::size_type size_type; Container& container_; size_type pos_; }; int main(int argc, char* argv[]) { using namespace std; typedef container_source<string> string_source; string input = "Hello World!\nThis is a test...\nShouldn't break\nthe assert"; string output; boost::iostreams::stream<string_source> in(input); getline(in, output); assert(input == output); return 0; } Build log: ------ Build started: Project: tstIostreams, Configuration: Debug Win32 ------ Compiling... tstIostreams.cpp e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\optimal_buffer_size.hpp(39) : error C2039: 'optimal_buffer_size' : is not a member of 'boost::iostreams::detail::optimal_buffer_size_impl<T>' with [ T=string_source ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\streambuf\indirect_streambuf.hpp(162) : see reference to function template instantiation 'std::streamsize boost::iostreams::optimal_buffer_size<T>(const T &)' being compiled with [ T=string_source ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\streambuf\indirect_streambuf.hpp(155) : while compiling class template member function 'void boost::iostreams::detail::indirect_streambuf<T,Tr,Alloc,Mode>::open(const T &,int,int)' with [ T=string_source, Tr=std::char_traits<char>, Alloc=std::allocator<char>, Mode=boost::iostreams::detail::io_mode_impl<1>::type ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\streambuf\indirect_streambuf.hpp(195) : while compiling class template member function 'bool boost::iostreams::detail::indirect_streambuf<T,Tr,Alloc,Mode>::is_open(void) const' with [ T=string_source, Tr=std::char_traits<char>, Alloc=std::allocator<char>, Mode=boost::iostreams::detail::io_mode_impl<1>::type ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\stream_buffer.hpp(65) : see reference to class template instantiation 'boost::iostreams::detail::indirect_streambuf<T,Tr,Alloc,Mode>' being compiled with [ T=string_source, Tr=std::char_traits<char>, Alloc=std::allocator<char>, Mode=boost::iostreams::detail::io_mode_impl<1>::type ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\utility\base_from_member.hpp(69) : see reference to class template instantiation 'boost::iostreams::stream_buffer<T,Tr,Alloc>' being compiled with [ T=string_source, Tr=std::char_traits<char>, Alloc=std::allocator<char> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\stream.hpp(75) : see reference to class template instantiation 'boost::base_from_member<MemberType>' being compiled with [ MemberType=boost::iostreams::stream_buffer<string_source,std::char_traits<char>,std::allocator<char>> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\stream.hpp(112) : see reference to class template instantiation 'boost::iostreams::detail::stream_base<Device,Tr,Alloc>' being compiled with [ Device=string_source, Tr=std::char_traits<char>, Alloc=std::allocator<char> ] e:\data\tstcsharp\tstiostreams\tstiostreams\tstiostreams.cpp(52) : see reference to class template instantiation 'boost::iostreams::stream<Device>' being compiled with [ Device=string_source ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\imbue.hpp(38) : error C2039: 'imbue' : is not a member of 'boost::iostreams::detail::imbue_impl<T>' with [ T=container_source<std::string> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\adapter\concept_adapter.hpp(113) : see reference to function template instantiation 'void boost::iostreams::imbue<container_source<Container>,Locale>(T &,const Locale &)' being compiled with [ Container=std::string, Locale=std::locale, T=container_source<std::string> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\streambuf\indirect_streambuf.hpp(225) : see reference to function template instantiation 'void boost::iostreams::detail::concept_adapter<T>::imbue<std::locale>(const Locale &)' being compiled with [ T=string_source, Locale=std::locale ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\streambuf\indirect_streambuf.hpp(223) : while compiling class template member function 'void boost::iostreams::detail::indirect_streambuf<T,Tr,Alloc,Mode>::imbue(const std::locale &)' with [ T=string_source, Tr=std::char_traits<char>, Alloc=std::allocator<char>, Mode=boost::iostreams::detail::io_mode_impl<1>::type ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\flush.hpp(41) : error C2039: 'flush' : is not a member of 'boost::iostreams::detail::flush_device_impl<T>' with [ T=container_source<std::string> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\adapter\concept_adapter.hpp(157) : see reference to function template instantiation 'bool boost::iostreams::flush<Device>(T &)' being compiled with [ Device=container_source<std::string>, T=container_source<std::string> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\adapter\concept_adapter.hpp(106) : see reference to function template instantiation 'bool boost::iostreams::detail::device_wrapper_impl<boost::iostreams::any_tag>::flush<container_source<Container>,std::basic_streambuf<_Elem,_Traits>>(Device &,Dummy *)' being compiled with [ Container=std::string, _Elem=char, _Traits=std::char_traits<char>, Device=container_source<std::string>, Dummy=std::basic_streambuf<char,std::char_traits<char>> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\adapter\concept_adapter.hpp(105) : while compiling class template member function 'bool boost::iostreams::detail::concept_adapter<T>::flush(std::basic_streambuf<_Elem,_Traits> *)' with [ T=string_source, _Elem=char, _Traits=std::char_traits<char> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\optional.hpp(35) : see reference to class template instantiation 'boost::iostreams::detail::concept_adapter<T>' being compiled with [ T=string_source ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\optional.hpp(38) : see reference to class template instantiation 'boost::iostreams::detail::aligned_storage<T>::dummy_u' being compiled with [ T=boost::iostreams::detail::concept_adapter<string_source> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\optional.hpp(108) : see reference to class template instantiation 'boost::iostreams::detail::aligned_storage<T>' being compiled with [ T=boost::iostreams::detail::concept_adapter<string_source> ] e:\data\tstcsharp\boost_1_36_0\include\boost-1_36\boost\iostreams\detail\streambuf\indirect_streambuf.hpp(131) : see reference to class template instantiation 'boost::iostreams::detail::optional<T>' being compiled with [ T=boost::iostreams::detail::concept_adapter<string_source> ] tstIostreams - 3 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

2 1

[range] iterator_range::size() requires a random access iterator?
by Adam Merz 16 Oct '08

16 Oct '08

Why does boost::iterator_range::size() require a random access iterator? The implementation is 'return m_End - m_Begin;' -- if this were changed to 'return std::distance(m_Begin, m_End);' then size() would work with any iterator type. This strikes me as an arbitrary limitation, or at the least a leaky abstraction. Is there a rationale here?

2 1

nary_tree ... does one exist?
by Robert Dailey 15 Oct '08

15 Oct '08

Hi, I noticed that there's a Google SOC 2006 library called Boost.Tree, which has an nary_tree implementation in it. However, I'm finding that this code does not compile at all. Are there any containers in boost (or perhaps elsewhere) that support tree structures with any number of children? Thanks.

2 1

build variant output directory
by Sebastian Hauer 15 Oct '08

15 Oct '08

Hello, I was just wondering if there is some way of defining a variant's build output directory. The current build output directory nesting is just to deep for my project. Since I only have one debug variant and one release variant having a simple build output directory like: bin/debug bin/release would completely suffice. But instead boost build insists on storing everything in directories based on the selected feature set: bin\msvc-8.0\debug\threading-multi bin\msvc-8.0\release\debug-symbols-on\threading-multi Also notice the additional debug-symbols-on in the release build path since I selected to enable debug symbols for release builds. Regards, Sebastian

5 7

Re: [Boost-users] return type of boost::iostreams::stream<T>::read()
by Struebing, Axel, le-tex 15 Oct '08

15 Oct '08

Hallo Éric, although it is not an exact fit it will be of value in evaluating my options. kind regards Axel Strübing > > Reading the documentation about boost::iostreams library I could not > > find the information which return type the boost::iostreams::stream's > > class is giving me calling read(). > > > >From the documentation, a boost::iostreams::stream derives from an > > std::basic_[i|o]stream, depending on the model of its underlying Device. > > In your example, the device is a Source, so I guess that the stream > > derives from std::basic_istream, whose read(char*, streamsize) method > > returns a basic_istream, not a streamsize. > > The library offers the "streamsize read(stream, char*, streamsize)" > function template. Using it in your example yould give something like (not > tested): > > #include <boost/iostreams/stream.hpp> > #include <boost/iostreams/device/file.hpp> > #include <boost/iostreams/operations.hpp> > > int main(void){ > namespace bio = boost::iostreams; > bio::stream<bio::file_source> istr(std::string("in.pdf")); > char buffer[10]; > std::streamsize i = bio::read(istr,buffer,10); > return 0; > } > > > HTH, > > Éric Malenfant > --------------------------------------------- > Two wrongs don't make a right but three rights make a left. > --

1 0

compilation problem with intel 10.1 and boost
by Hicham Mouline 15 Oct '08

15 Oct '08

Hello, I have a similar problem to this post: http://lists.boost.org/MailArchives/ublas/2008/09/2979.php though i am not using ublas at all. Linux 2.6.18-53.1.19.el5 #1 SMP Tue Apr 22 03:01:10 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux Server release 5.1 (Tikanga) Intel(R) C++ Compiler for applications running on Intel(R) 64, Version 10.1 Build 20080312 Package ID: l_cc_p_10.1.015 i have the released 1.36, haven't patched anything, regards,

2 1

MPL: Arguments to transform metafunction
by Missing Rainbow 15 Oct '08

15 Oct '08

Hi All, I have a doubt regarding the arguments to the mpl::transform metafunction. In the MPL book (page 42), the mpl::transform is presented as follows: template <class Sequence1, class Sequence2, class BinaryOperation> struct transform; Here mpl::transform takes 2 sequences and a binary operation and it results in a sequence. But in a later portion of the book (page 124), while discussing about sequence building algorithms, the following is presented: typedef mpl::vector_c<int, 1, 2, 3> v123; typedef mpl::plus<_1, mpl::int_<5> > add5; typedef mpl::transform<v123, add5>::type v678; Here mpl::transform takes 1 sequence and a unary operation and it results in a sequence. How does mpl::transform supports such different arguments? Rgds, anna

2 1

boost::program options - why not allow_unregistered() for environmental variable parser?
by Ivan Godard 15 Oct '08

15 Oct '08

Vladimir Prus wrote: > > The environment seems to be the one place that is guaranteed to have > > unregistered options, because it is full of things (like > > $LD_LIBRARY_PATH) of no interest to the program doing the parsing. A > > call on parse_environment always throws on these. As far as I can see in > > the code, the way to avoid the throw is to pass parse_enviroment a > > function that checks for each of the options that are actually wanted > > and returns the null string for the rest. Of course, this duplicates > > what the parser just did. > > > > Is there a better way? > The recommended way is to use some name prefix for environment variables affecting your program -- say MY_PROG_. Then, pass this prefix to parse_environement and all variables without that prefix will be ignored. Does this help? - Volodya Unfortunately no. My code must interact with a large third-party application with a ton of environmental variables that follow no particular naming convention, and I wanted to integrate the probe for those variables with my own command line so I could accept the environment as default but overwrite them from the command line using the same names (which are already documented by the third party and mostly familiar to the users). Having no accept_unregistered precludes that approach, and I have to use getenv() and do it by hand instead. It's not a hard workaround, just a day or two of work, but lacking accept_unregistered for only one of the three kinds of parser seems odd given the general elegance of the rest of your library. Ivan

1 0

[program_options] maps as arguments
by Christoph Duelli 15 Oct '08

15 Oct '08

Does program_options somehow support something like --base x=hello --base y=world where the parsed "--base"s will be put in a std::map<std::string, std::string> (or std::map<X,Y> in the general case?) (At the moment I parse --base into a vector<string> and process the read strings after program_options has done its job.) Thank you, Christoph

2 1

[threads] How to test for running thread
by Koen Vermeer 15 Oct '08

15 Oct '08

Hi, Suppose I have a thread running, I issue an interrupt(), and the thread starts to perform its cleanup code. As this may take some time, I'd like to know when the thread actually is stopped. Is there some standard approach on how to do this? I was thinking about testing if the thread object equals Not-a-Thread, but I've yet to find out how... Thanks! Koen

2 4

how to expose an stl vector class porperty
by Massimiliano Bellomo 15 Oct '08

15 Oct '08

Dear all, i've a property of a class which is a std::vector<Foo*> that i would like to expose to python. Foo is a class already exposed. How do i implement the setter/getter methods for the vector property and declare them in the python module ? Many thanks, regards, Max -- --------------------------------------- Massimiliano Bellomo Dep. of Nuclear and Theoretical Physics INFN Pavia - +39 0382 987 234 ---------------------------------------

1 0

boost::program options - why no allow_unregistered() for environmental variable parser?
by Ivan Godard 15 Oct '08

15 Oct '08

The environment seems to be the one place that is guaranteed to have unregistered options, because it is full of things (like $LD_LIBRARY_PATH) of no interest to the program doing the parsing. A call on parse_environment always throws on these. As far as I can see in the code, the way to avoid the throw is to pass parse_enviroment a function that checks for each of the options that are actually wanted and returns the null string for the rest. Of course, this duplicates what the parser just did. Is there a better way? Ivan

2 1

[IoStreams]: bzip2_compressor not working?
by Roland Bock 14 Oct '08

14 Oct '08

Hi, does the attached program write something to stdout for anyone? It should print out the bzip2-compressed version of the string "Original". It compiles fine but prints out exactly nothing. My platform is Ubuntu 8.04 64bit, gcc 4.2.3, using boost version 1.36, and bzip2 1.0.4. Any ideas? Thanks in advance, Roland PS: The equivalent code works fine for gzip and zlib compression PPS: bzip2 itself works fine, too.

1 1

[graph]-Minor errors in docs
by Michael Fawcett 14 Oct '08

14 Oct '08

At the bottom of this doc page: http://www.boost.org/doc/libs/1_36_0/libs/graph/doc/graph_concepts.html#sec… There are numerous add_edge() calls that are incorrect, e.g. add_edge(digraph, u, v, Weight(1.2)); >From what I can tell, these should be: add_edge(u, v, Weight(1.2), digraph); Now, I'm only using 1.35, but the 1.36 documentation for add_edge here: http://www.boost.org/doc/libs/1_36_0/libs/graph/doc/adjacency_list.html supports my guess. Thanks, --Michael Fawcett

1 0

How to serialize class derived from standard container?
by Terdale, Shantibhushan 14 Oct '08

14 Oct '08

This could be very stupid question but I am stuck with this situation. I have class A derived from List and B derived from C. How do I write Serialize method for A? See below, both options I tried are not working. Any help is appreciated. Thanks. class B : public C { private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(C); } }; class A : public list { public: void Append( const list<string>& rBList ); A::const_iterator FindSpecialB(const B& rB); private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(List); OR ar & boost::serialization::make_nvp("AddressList", boost::serialization::base_object<list>(*this)); OR ?? } };

1 0

[thread_safe_signals][signals2] call for reviewers (review tentatively scheduled Nov 1st - Nov 10th)
by Stjepan Rajko 14 Oct '08

14 Oct '08

Hello all, The review for the Signals2 library (formerly known as thread_safe_signals - description below) submitted by Frank Mori Hess has been tentatively scheduled for Nov 1st - Nov 10th. As per a recent discussion on the review process (http://tinyurl.com/48tdjs) and after consulting with the review wizards, we would like to try something new for this review: have a number of reviewers commit beforehand to submitting a review. The goal of signing up is to ensure that there is both sufficient interest in the library, and that there will be enough reviews submitted for an informed decision on acceptance. If you are interested in this library, I encourage you to sign up now to be a reviewer (by this you commit to submitting a review preferably by the end of the review period). Of course, additional reviews from non-signed-up reviewers will also be welcome, but without enough reviewers signing up beforehand it is not clear that we should proceed with a review at this time. To sign up, please send me a reply (here or privately), and let me know whether the review period is suitable for you (we can make some adjustments if necessary). I strongly encourage participation from reviewers that would examine the library from a purely user standpoint (commenting on the interface and / or the documentation), as well as reviewers that would be willing to look into the details of the implementation (i.e., you don't have to focus on both). I you would like to sign up, please let me know by this Saturday (October 18th). About the library: -------- * The library can be downloaded from: http://www.boostpro.com/vault/index.php?&directory=thread_safe_signals (latest version is signals2-2008-10-08.zip) * Documentation is also available online: http://www.comedi.org/projects/signals2/libs/signals2/doc/html/index.html * A synopsis: The Boost.Signals2 library (formerly known as thread_safe_signals) is an implementation of a managed signals and slots system. Signals represent callbacks with multiple targets, and are also called publishers or events in similar systems. Signals are connected to some set of slots, which are callback receivers (also called event targets or subscribers), which are called when the signal is "emitted." Signals and slots are managed, in that signals and slots (or, more properly, objects that occur as part of the slots) can track connections and are capable of automatically disconnecting signal/slot connections when either is destroyed. This enables the user to make signal/slot connections without expending a great effort to manage the lifetimes of those connections with regard to the lifetimes of all objects involved. When signals are connected to multiple slots, there is a question regarding the relationship between the return values of the slots and the return value of the signals. Boost.Signals2 allows the user to specify the manner in which multiple return values are combined. * Relationship to Boost.Signals: This is a thread-safe variant of the original Boost.Signals library. There have been some changes to the interface to support thread-safety, mostly with respect to automatic connection management. The following thread offers some more details on the differences between the two implementations, as well as a plan of a phased replacement of Boost.Signals should Signals2 be accepted: http://tinyurl.com/4sqau3 [nabble] Again, if you are interested in this library, please consider signing up as a reviewer. Kind regards, Stjepan (review manager)

2 2

Complie error: 'make_shared’ was not declared in this scope
by Michael Chen 14 Oct '08

14 Oct '08

Hi everyone I meet this error: "class.cpp:89: error: no matching function for call to 'make_shared(const boost::weak_ptr<zeitgeist::Core>&)' and the code is: *return make_shared(mCore);* I'm using gcc 4.3.1 and boost 1.36.0. I tried to solve the problem by using *shared_ptr<Core>(mCore)* but got a run-time error. Could someone help me?

2 1

Re: [Boost-users] [boost] [thread_safe_signals][signals2] call for reviewers (review tentatively scheduled Nov 1st - Nov 10th)
by Stjepan Rajko 14 Oct '08

14 Oct '08

Hi Jeff, On Tue, Oct 14, 2008 at 6:11 AM, Jeff Flinn <TriumphSprint2000(a)hotmail.com> wrote: > > It might be more expeditious to directly paste Frank's points from his email > in the above thread. I've pasted them below. Is the intent to only review > these changes? > Thanks for pasting that in. I think any issue related to the library would be appropriate to raise during the review, even if it would apply to the current Boost.Signals library (reviews are good times to figure things out :-)). The original Boost.Signals review discussion can be found here: http://lists.boost.org/Archives/boost/2002/02/index.php I'm not sure how applicable that discussion would be now since I imagine the library has evolved quite a bit over the years, but it might be useful to revisit if we end up discussing things that apply to Boost.Signals as well as the proposed library. > Is there > any info on the cost of this thread safe implementation vs. the signals1 in > a single threaded application? > I assume that the following comparison was done for a single threaded app (using dummy_mutex), but if not I suspect the results would be an upper bound for the single threaded case: http://www.nabble.com/boost%3A%3Asignal-poor-performance-td19602422.html#a1… Best, Stjepan

1 0

boost::asio::streambuf question
by Amit Sonawane 14 Oct '08

14 Oct '08

Hi, I am using Asio in Boost version 1.36.0 and I have a question regarding boost::asio::streambuf. Code extract: Class A { boost::asio::streambuf buf;//class member void Read() { boost::asio::async_read_until(socket, buf, boost::regex("\0101"),boost::bind(DoSomething,this,boost::asio::placehol ders::error,boost::asio::placeholders::bytes_transfered));//class function } void DoSomething(const boost::system::error_code& ec, std::size_t bytes_transferred)//class function { If(!ec && (bytes_transferred != 0)) { boost::asio::streambuf::const_buffers_type bufs = buf.data(); std::string s(boost::asio::buffers_begin(bufs),boost::asio::buffers_begin(bufs) + bytes_transferred); //Do something with the data in s; //Here I need to call async_read_until again, but buf still has the data read in the earlier call so, it calls the DoSomething handler again thus repeating //the process. Read(); } } }; My question is how do I clear the contents of buf before calling async_read_until again. I tried reading into a local variable but boost::asio::streambuf is noncopyable. Is there a better way to do what I am trying to do. Any help is greatly appreciated. Esta mensagem pode conter informação confidencial e/ou privilegiada. Se você não for o destinatário ou a pessoa autorizada a receber esta mensagem, não deverá utilizar, copiar, alterar, divulgar a informação nela contida ou tomar qualquer ação baseada nessas informações. Se você recebeu esta mensagem por engano, por favor avise imediatamente o remetente, respondendo o e-mail e em seguida apague-o. Agradecemos sua cooperação. This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, change, take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation.

2 1

return type of boost::iostreams::stream<T>::read()
by Struebing, Axel, le-tex 14 Oct '08

14 Oct '08

I apologize, if i have missed something. Reading the documentation about boost::iostreams library I could not find the information which return type the boost::iostreams::stream's class is giving me calling read(). I searched through the headers and every read() found returns std::streamsize, which sounds reasonable to me. I was surprised, that the code below does not compile --------start code ---------- #include <boost/iostreams/stream.hpp> #include <boost/iostreams/device/file.hpp> int main(void){ boost::iostreams::stream<boost::iostreams::file_source> istr(std::string("in.pdf")); char *buffer = new char[10]; std::streamsize i = istr.read(buffer,10); return 0; } -------end code----------- and gives me: test.cpp:7: error: invalid conversion from ‘void*’ to ‘std::streamsize’ Could someone shed a light on me, please? Thanks in advance. kind regards Axel

2 1

regression test result to html conversion
by Dirk Jagdmann 13 Oct '08

13 Oct '08

Hello Boosters, I've successfully ran the regression suite on my computer and now have a gigantic result.xml file. Is there a script or XSLT available somewhere which converts it into an easier to read txt or html file, so I can see which tests passed and failed? -- ---> Dirk Jagdmann ----> http://cubic.org/~doj -----> http://llg.cubic.org

1 0

Representing of empty sequence
by Missing Rainbow 13 Oct '08

13 Oct '08

Hi All, I am trying to understand the implementation of mpl::vector. I have simplified greatly to help understand it. I am now trying to figure out how to represent an empty sequence. Here is what I have got: template <class T0> struct vector1 { typedef vector1 type; }; template <class T0, class T1> struct vector2 { typedef vector2 type; }; template <class T0, class T1, class T2> struct vector3 { typedef vector3 type; }; struct dummy; template <class T0 = dummy, class T1 = dummy, class T2 = dummy> struct vector; template<T0> struct vector : vector1<T0> {}; template <T0, T1> struct vector : vector2 <T0, T1> {}; template <T0, T1, T2> struct vector : vector3 <T0, T1, T2> {}; Examples: vector1<char>::type vector2<int, long>::type vector3<short, int, long>::type vector<char>::type vector<int, long>::type vector<bool, float, double>::type How to declare and make use of an empty sequence? Rgds, anna -- Flow: For Love of Water http://missingrainbow.blogspot.com/2008/09/flow-for-love-of-water.html

2 1

Cannot build debug-only with bjam?
by Jason Nye 13 Oct '08

13 Oct '08

Hi All, We are a Visual C++ shop (using vs2005 currently) and I would like to build boost with _SECURE_SCL=0 for release and _SECURE_SCL=1 for debug. I see there are only two options for the bjam --build-type command line option: minimal (which is release) and complete (which is debug+release). I would like to run bjam twice: once for release (with _SECURE_SCL=0) and once for debug (with _SECURE_SCL=1). Is there any way to do this? Note: I am fine with building both dynamics and statics for each configuration. I tried -build-type=debug but this doesn't work. Thanks, Jason.

2 1

try, catch with boost.asio acceptor
by Etienne Philip Pretorius 13 Oct '08

13 Oct '08

How would someone get this right? retry: try { boost::asio::local::stream_protocol::acceptor acceptor(m_service,endpoint); } catch (boost::system::system_error e) { if(e.code()==boost::system::errc::address_in_use) { std::remove("/tmp/someprogram.socket"); goto retry; } throw; } Etienne

1 0

new trunk build problem: tr1/.svn
by Robert Mecklenburg 13 Oct '08

13 Oct '08

To try and test the latest serialization changes, I've done a trunk update and now I'm getting a new build error: time make install ./tools/jam/src/bin.linuxx86/bjam --user-config=user-config.jam --prefix=/home/mecklen/work/boost-install --exec-prefix=/home/mecklen/work/boost-install --libdir=/home/mecklen/work/boost-install/lib --includedir=/home/mecklen/work/boost-install/include --without-python --without-mpi install warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. error: Unable to find file or target named error: 'boost/tr1/tr1/.svn' error: referred from project at error: '.' The file it is complaining about exists and has mode bits 755. My configure line looks like: ./configure --prefix=/home/mecklen/work/boost-install --without-libraries=python --without-libraries=mpi --without-icu I'm not much of a bjam guy. This configure and build worked about 10 days ago. Any suggestions would be greatly appreciated. Thanks, -- Robert

5 7

Boost-1.36 with gcc stlport links against both libstlport_gcc.so and libstdc++.so.5
by Shetty, Diwakar 13 Oct '08

13 Oct '08

Thanks to Juergen Hunold's help, I was able to build Boost 1.36 on Linux-x86-32bit with gcc and stlport However, the boost lib seems to links against both "libstlport_gcc.so" and "libstdc++.so.5". See line 1 and line 3 below Should it not be linking only against "libstlport_gcc.so"?? ldd libboost_unit_test_framework-gcc32-mt-p-1_36.so Line 1: libstlport_gcc.so => /somepath/STLport-4.6.2/lib/libstlport_gcc.so (0xb74d9000) Line 2: librt.so.1 => /lib/tls/librt.so.1 (0xb74c5000) Line 3: libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0xb7412000) Line 4: libm.so.6 => /lib/tls/libm.so.6 (0xb73f0000) libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb73e6000) libpthread.so.0 => /lib/tls/libpthread.so.0 (0xb73d6000) libc.so.6 => /lib/tls/libc.so.6 (0xb729e000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000) Thanks, Diwakar (Extn. 64048) ============================================================================== Please access the attached hyperlink for an important electronic communications disclaimer: http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html ==============================================================================

1 0

serialization 1.36.0 extended_type_info exit issue(s)
by Tim St. Clair 13 Oct '08

13 Oct '08

Folks, I'm running some serialization unit-tests which pass with flying colors under 1.35.0 and earlier, however they seg-fault on exit when run through 1.36.0. The error appears to deal with destruction of extended_type_info_typeid objects, and *only* manifests itself when I load an archive through a shared_ptr<T>. The load will appear to function properly, then on exit of the application, <<Death>>. This occurs even if I remove BOOST_CLASS_EXPORT && BOOST_CLASS_TYPE_INFO as the shared_ptr is to the derived element, and I'm not testing through a base. My lastest guess is that I may be missing some #define BOOST_SOME_MAGIC_NEW_OPTION //////////////////////////// pseduo code: //////////////////////////// BOOST_AUTO_TEST_CASE( MyTestClass_Serialization ) { boost::shared_ptr<MyTestClass> outtie ( new MyTestClass() ); boost::shared_ptr<MyTestClass> innie; std::ofstream os( "MyTestClass_Serialization.xml", std::ios_base::out ); my_pack< MyTestClass >( os, outtie ); os.close(); std::ifstream is( "MyTestClass_Serialization.xml", std::ios_base::in ); my_unpack< MyTestClass >( is, innie ); is.close(); BOOST_CHECK_NO_THROW(); } //////////////////////////// ddd output: //////////////////////////// *** No errors detected [New Thread 0xb73e26c0 (LWP 4715)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb73e26c0 (LWP 4715)] 0xb76bb56b in std::_Rb_tree_rebalance_for_erase () from /usr/lib/libstdc++.so.6 (gdb) bt #0 0xb76bb56b in std::_Rb_tree_rebalance_for_erase () from /usr/lib/libstdc++.so.6 #1 0xb7a38221 in std::_Rb_tree<boost::serialization::detail::extended_type_info_typeid_0 const*, boost::serialization::detail::extended_type_info_typeid_0 const*, std::_Identity<boost::serialization::detail::extended_type_info_typeid_0 const*>, boost::serialization::detail::type_compare, std::allocator<boost::serialization::detail::extended_type_info_typeid_0 const*> >::erase (this=0xb7a93c94, __position={_M_node = 0x810a3f8}) at /usr/include/c++/4.2/bits/stl_tree.h:1261 #2 0xb7a38270 in std::multiset<boost::serialization::detail::extended_type_info_typeid_0 const*, boost::serialization::detail::type_compare, std::allocator<boost::serialization::detail::extended_type_info_typeid_0 const*> >::erase (this=0xb7a93c94, __position={_M_node = 0x810a3f8}) at /usr/include/c++/4.2/bits/stl_multiset.h:346 #3 0xb7a37482 in boost::serialization::detail::extended_type_info_typeid_0::type_unregister (this=0x810749c) at /opt/tomodev/env/boost/libs/serialization/src/extended_type_info_typeid.cpp:93 #4 0x080b001a in ~extended_type_info_typeid (this=0x810749c) at /opt/tomodev/env/boost/boost/serialization/extended_type_info_typeid.hpp:80 #5 0x0809ebe2 in __tcf_49 () at /opt/tomodev/env/boost/boost/serialization/singleton.hpp:104 #6 0xb74f7084 in exit () from /lib/tls/i686/cmov/libc.so.6 #7 0xb74df458 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6 #8 0x0809e691 in _start () Cheers, Timothy St. Clair [timothysc(a)gmail.com]

9 37

Linker error with boost_1_36_0
by kumar bhargav 13 Oct '08

13 Oct '08

Hi, I built the thread library after downloading "boost_1_36_0.zip". After building the thread library from bjam, when I build the program in VS2008, I get following linker error:- Error 1 fatal error LNK1104: cannot open file 'libboost_thread-vc90-mt-gd-1_36.lib' What I see in the generated library folder is that boost_thread-vc90-mt-gd-1_36.lib is generated, but the linker is looking for 'libboost_thread-vc90-mt-gd-1_36.lib'. I have already done the required changes in the project properties mentioned at http://www.boost.org/doc/libs/1_36_0/more/getting_started/windows.html . Similar thing happening with Regex library also. The generated lib is boost_regex-vc90-gd-1_36.lib, but the linker is looking for libboost_regex-vc90-gd-1_36.lib. Is there any other settings change required or something else? Thanks, Bhargav.

5 9

[Function] Encapsulated inside a class, won't initialize.
by Ravey Alexandre 13 Oct '08

13 Oct '08

Hi there, I'm using boost::function defined private inside a class and then assign a function comming from another boost::function. But it don't work. A little code may help understand my pretty bad explanation. ####### class C { public: void Bind(boost::function<void()> f); private: boost::function<void()> func; }; void C::Bind(boost::function<void()> f) { func = f; //Compile, but raise an access violation. } ####### The problem seems obvious to me, func si not initialized correctly and swap() fail. But I can't figure out how to make this work. Thanks for your help.

2 1

Visual C++ 2003 and Boost 1.35
by Tomek Jerzykowski 13 Oct '08

13 Oct '08

Hello! I'm having a problem with using Boost 1.35 on Visual C++ 2003 SP1. Take a look at the following very simple program: ------------------------------------ #include "stdafx.h" #include <boost/interprocess/sync/interprocess_upgradable_mutex.hpp> int _tmain(int argc, _TCHAR* argv[]) { int i = 0; unsigned int j = 2; j < i; return 0; } ------------------------------------ It does nothing, just emits a compiler warning. Unfortunately, this warning is followed by lots of meaningless messages related to the included Boost header: ------------------------------------ BoostTest2.cpp c:\BoostTest2\BoostTest2.cpp(11) : warning C4018: '<' : signed/unsigned mismatch c:\Program Files\boost\boost_1_35_0\boost\interprocess\sync\interprocess_upgradable_mut ex.hpp(621) : see reference to class template instantiation 'boost::interprocess::upgradable_lock<M>' being compiled with [ M=boost::interprocess::interprocess_mutex ] c:\Program Files\boost\boost_1_35_0\boost\interprocess\sync\interprocess_upgradable_mut ex.hpp(621) : see reference to class template instantiation 'boost::interprocess::upgradable_lock<M>' being compiled with [ M=boost::interprocess::interprocess_mutex ] ------------------------------------ If I remove #include <boost..., the extra messages go away. It looks to me like compiler bug. The exe produced is probably ok, but the amount of spam in output window makes using Boost very cumbersome. Is there any way to make these messages go away?

6 9

boost::noncopyable doesn't work
by Maurer Philipp 13 Oct '08

13 Oct '08

Hello, I have a very special problem concerning boost::noncopyable under Windows in a shared library. A class deriving from boost::noncopyable becomes copyable. Strange ? Here is the example code. (Using Visual Studio 2005, no sp, Windows XP): 1) create one static lib with only TestClasses.hpp with the following content in it: #include <boost/noncopyable.hpp> class INonCopyNormalClass: boost::noncopyable { public: virtual INonCopyNormalClass* clone() = 0; }; 2) create one DLL (shared lib) with the following content: DLLMain.hpp: #include "../TestLib/TestClasses.hpp" # if defined(UNCOPYABLETESTDLL_EXPORTS) # define DLL_API __declspec(dllexport) # else # define DLL_API # endif class DLL_API AnotherNonNormalCopyClass: public INonCopyNormalClass { }; class YetAnotherNonNormalCopyClass: public AnotherNonNormalCopyClass { public: YetAnotherNonNormalCopyClass(); virtual INonCopyNormalClass* clone(); }; DLLMain.cpp: #include "DLLmain.hpp" YetAnotherNonNormalCopyClass::YetAnotherNonNormalCopyClass() { } INonCopyNormalClass* YetAnotherNonNormalCopyClass::clone() { return new YetAnotherNonNormalCopyClass(*this); } It is quite important that the DLL_API is defined properly !! This seems to be the reason, that the code above compile, links and runs. This should not be possible. The line return new YetAnotherNonNormalCopyClass(*this); should not work. If DLL_API is undefined or removed, you will get the correct error message and compilation fails ANY ideas ? SOMEONE ? Thanks and best, Philipp

1 0

[Boost.Asio] asio objects: initializing after construction
by Roman Shmelev 12 Oct '08

12 Oct '08

Hi! Lets assume I have some kind of map : map<int, boost::asio::ip::tcp::acceptor> my_acceptors; AND map<int, boost::asio::ip::tcp::socket> my_sockets; I want to extend the maps with new objects, so what is the right way to (?): my_acceptors[someport_int].initialize(_my_ioservice,_my_endpoint); my_acceptors[another_int].initialize(_my_ioservice); I use such code, but not sure it is right: { // initialize new acceptor ip::tcp::endpoint _my_endpoint(ip::tcp::v4(),port); ip::tcp::acceptor _acc(_my_ioservice,_my_endpoint); my_acceptors[someport_int] = _acc; // initialize new socket ip::tcp::socket _thesock(_my_ioservice); my_sockets[another_int] = _thesock; // asycc_accept my_acceptors[someport_int].async_accept(my_sockets[new_neighbour_id],boost::bind(do_AsyncAcceptHandler,this,new_neighbour_id)); } Thanks!

3 3

static library link (unit test) to msvc 2008
by Boost fan 12 Oct '08

12 Oct '08

Hi, I managed to make the static library work on msvc. some notes: 1.The compiler throws many exeptions on enable_if.hpp , although I had just included <unit_test.hpp>. As a work-around (hack?) #define BOOST_UTILITY_ENABLE_IF_HPP was used before inclusion. 2.The simple tests apparently works but I dont know how to manage dynamic ones (asserts) ; currently ( assert(x)-->Assert(x) ): #ifdef TEST_MODE # define Assert(x) BOOST_CHECK(x) #else # define Assert(x) do{}while(0) #endif There are some strange run time errors which debugging doesnt lead to exact code. Now any comments on these ? :)

1 0

Re: [Boost-users] msvc 64-bit test targets vs. manifest files
by Mat Marcus 12 Oct '08

12 Oct '08

Posted to boost build list without any reply. Now trying boost users: > For several years I have been working with a set of libraries, built > with boost build and dependent upon some boost libraries. I've been > working on a 32-bit machine, but I have occasionally been building > 64-bit targets to try to help support clients who will be using my > library on 64-bit machines. My suite of boost-build test targets > (unit-test, run, etc.) for my lib is a bit inconvenient when on 32 bit > machines, since I get an error dialog each time I build, but sometimes > I want to test as much as possible. The commands I use to build (msvc > 9) are: > > ## 32 bit > bjam msvc debug > > ## 64 bit > bjam msvc debug architecture=x86 address-model=64 > define=BOOST_DISABLE_ABI_HEADERS > > Yesterday, I tried to build/run the 64 bit targets for the same files > using the same invocation on a 64-bit Vista machine. I thought that > perhaps my code would exhibit some 64-bit run-time issues, but things > didn't go that far. Instead, I got manifest/DLL-related problems for > each test. Here is an example of the error that I receive each time > boost build tries to run a built artifact: > > ====== BEGIN OUTPUT ====== > The application has failed to start because its side-by-side > configuration is incorrect. Please see the application event log for > more detail. > > EXIT STATUS: 14001 > ====== END OUTPUT ====== > > The corresponding Application Event Log Entry is: > > Activation context generation failed for > "c:\asl\staff\mmarcus\sandbox\built_artifacts\documentation\examples\enum_ops_example.test\msvc-9.0\debug\address-model-64\architecture-x86\link-static\threading-multi\enum_ops_example.exe". > Dependent Assembly > Microsoft.VC90.DebugCRT,processorArchitecture="amd64",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8" > could not be found. Please use sxstrace.exe for detailed diagnosis. > > Can someone suggest a workaround or a patch? Thanks, > Mat >

1 0

Re: [Boost-users] Error:" Non-const function called for const object" on Sun CC while using boost::multi_index::multi_index_container
by JOAQUIN M. LOPEZ MUÑOZ 12 Oct '08

12 Oct '08

________________________________________ De: Alexander Vinokur [Alexander.Vinokur(a)amdocs.com] Enviado el: domingo, 12 de octubre de 2008 8:44 Para: boost-users(a)lists.boost.org CC: JOAQUIN M. LOPEZ MUÑOZ Asunto: Re: Error:" Non-const function called for const object" on Sun CC while using boost::multi_index::multi_index_container > > Hi Joaquín, > > I was out of office several days. Sorry. > So, I send my reply today. No problem at all :) > I don't have permissions to change something under /boost. Maybe you can still perform the test by doing the following: 1 Create a local folder structure more or less like this: ~alex/boost_patch/boost/detail and copy there the allocator_utilities.hpp modified file I sent you previously. 2 When compiling your multi-index example add a compiler option (or IDE setting, etc.) so that ~alex/boost_patch/ is added to the list of include directories *and* takes precedence over the official copy of Boost. If you finally manage to do the test please report back your results. > But here other test I did: [example core snipped] I take this a sufficient evidence that the patch should work, so I went ahead and added it to the trunk: http://svn.boost.org/trac/boost/changeset/49289 If nothing wrong happens with the patch, it'll be shipped with Boost 1.38. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

1 0

Re: [Boost-users] Error:" Non-const function called for const object" on Sun CC while using boost::multi_index::multi_index_container
by Alexander Vinokur 12 Oct '08

12 Oct '08

Hi Joaquín, I was out of office several days. Sorry. So, I send my reply today. I don't have permissions to change something under /boost. But here other test I did: --- file foo19.cpp --- struct Bar { virtual ~Bar(){} }; int main() { const Bar* p1 = new Bar; const_cast<Bar*>(p1)->~Bar(); // No problem const Bar* p2 = new Bar; p2->~Bar(); // line 13: Error: Non-const function Bar::__SLIP.DELETER__A() called for const object. return 0; } ------------------- Compilation: %CC -m64 -library=stlport4 foo19.cpp ==================================================== "JOAQUIN M. LOPEZ MU?OZ" <joaquin(a)tid.es> wrote in message news:<D1B8B06869125E44A4B33FF31CBAEA591187ADF179(a)EXCLU2K7.hi.inet>... De: Alexander Vinokur [Alexander.Vinokur(a)amdocs.com] Enviado el: martes, 07 de octubre de 2008 18:28 Para: boost-users(a)lists.boost.org CC: JOAQUIN M. LOPEZ MU?OZ Asunto: RE: Error:" Non-const function called for const object" on Sun CC w=ile using boost::multi_index::multi_index_container > > Joaquin, thank you. > > Here code I compiled. > > // --- File foo3.cpp --- > [...] > const Bar* p4 = new Bar; > p4->~Bar(); // line 19: Error: Non-const function > Bar::__SLIP.DELETER__A() called for const object. OK, seems like the bug we were after, if only in a slightly different guise (deleting a const T* works, but directly calling ~T() on a const object does not). Alex, can you do the following? Please try replacing the /boost/detail/allocator_utilities.hpp file in your local Boost copy with the attached file and rebuild the multi_index_container code that was failing. Does this fix it? If so, I'll commit this version into th= trunk so that it'll be available in Boost 1.38 (though you can use it now with your local Boost copy, of course). Joaqu?n M L?pez Mu?oz Telef?nica, Investigaci?n y Desarrollo ---------- This message and the information contained herein is proprietary and confidential and subject to the Amdocs policy statement, you may review at http://www.amdocs.com/email_disclaimer.asp

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static library link (unit test) to msvc 2008
by nbtvd fdstrhnbbx 11 Oct '08

11 Oct '08

Hello , I have used bjam (cmd: bjam test) for boost (1.36.0) test library. It has generated some ".lib" files for static binding to my target project. Now can someone explain to me (step by step please ) how to use these ".lib" files in msvc 2008 ? By the way this is the name of one of them: libboost_unit_test_framework-vc90-mt-gd-1_36.lib ( ok this is a naive question but I could not find how on boost documentation either on msdn I just found how to use a ".lib" file in another project in the same solution but apparently this is not the case because of pre-built library. ) Thanks afore :) .

2 1

mpl compiler performance
by Hicham Mouline 11 Oct '08

11 Oct '08

Hello, I am a novice user of mpl and I am running into slow compile times with intel c++. I have some 5 class templates that are each instantiated some 20 times or so. (2mns or so per translation unit). I will reread Appendix C of Abrahams and Gurtovoy's "C++ Template metaprogramming". Is there any how-to or guide that describes idioms to avoid that I can read before I fire off specific questions to the list? Regards,

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[Boost documentation] was Re: serialization1.36.0 extended_type_info exit issue(s)
by Robert Ramey 11 Oct '08

11 Oct '08

>From the boost build / merge >> The same goes for boost documentation which I would >> really like to use. But I don't feel confident that "it >> just works" > > Heh, there's nobody here who would disagree with that. To me the sad part of this is a) that I personally have a HUGE need for something like the boost documentation system in my own projects. b) I feel that if it were subjected to the normal boost testing regimen, it would be a dependable product by now. Or at least we would have a good test matrix which I could use to know what aspects I can't use in my environment. What I would like to see is: a) a directory structures that looks like one of the following .../libs serialization doc *.html // i.e. same as we have now or .../libs serialization doc Jamfile.v2 (optional) pdf (optional - built on demand by bjam from boost book) *. pdf files windows html help (optional - built on demand by bjam from boost book *.chm files html (included in distribution - optionally (re-built) by bjam from boost book) *.html files boostbook (hand prepared - or built by bjam from quickbooks) * .. boost book filles quickbooks (optional - hand prepared) For any library I was interested in I could review the html or build the version I needed by going to the doc directory and invoking something like bjam -???? or bjam -????? pdf And if I want to spend $300 on a proprietary package, I could do that as well - just as I do for my compiler. But to do this the following tools have to be tested on a regular basis like the libraries are: a) boostbook -> pdf b) boostbook->windows html help c) boostbook->html d) quickbooks->boostbook so there would be a couple of "new" tool/library directories ../tools boostbook build Jamfile.v2 doc boost book documentation src ... test quickbooks ... same as above And of course these tests would be part of the normal test matrix. I realize that this sounds like a lot of effort. But then a lot of the above is already in boost somewhere so a large part of the effort would be shuffling a round stuff that's already in there (boost). I believe that reorganizing boost documentation along the above would result in a robust and very popular tool/library. Robert Ramey

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How to build Boost 1.36.0 with STLPort 4.6.2 on gcc 3.2.3 for Linux-x86-32 ?
by Shetty, Diwakar 11 Oct '08

11 Oct '08

Hello all, I have been struggling with this for more than a day now. I would like to build Boost 1.36.0 with STLPort 4.6.2 on gcc 3.2.3 for Linux-x86-32. I have tried all options as below but none of them work for me. 1) bjam --stagedir=/somepath/install toolset=gcc stdlib=stlport install 2) bjam -sTOOLS="gcc-stlport" -sSTLPORT_PATH="/somepath/STLport-4.6.2/stlport/" -sSTLPORT_VERSION="4.6.2" --prefix=/somepath/boost_1_36_0/install install 3) Added following to "boost/config/user.hpp" #define BOOST_STDLIB_CONFIG "boost/config/stlport.hpp" Then ran ./configure --prefix=/somepath/install install Could somebody please help? Its driving me nuts trying to figure this out from Boost docs and using "google" Thanks, Diwakar ============================================================================== Please access the attached hyperlink for an important electronic communications disclaimer: http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html ==============================================================================

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[multi_array] Access a view's index_range
by Robert Jones 10 Oct '08

10 Oct '08

How do I access the index_range of an array_view? ie., typedef boost::multi_array<Cell,2 > Grid; Grid grid( boost::extents[9][9]); Grid::array_view<2> view = grid[indices[range(), range()]]; for (Grid::index i = view.?????.start(); i != view.?????.finish(); ++i) {....} where I'm expecting i to take values 0..8 inclusive. Thanks - Rob.

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Re: [Boost-users] mpl programming task
by peter_foelsche＠agilent.com 10 Oct '08

10 Oct '08

or even more clear: #include <map> #include <set> typedef std::map<size_t, size_t> CInt2IntMap; typedef std::set<size_t> CIntSet; static CInt2IntMap convert(const CIntSet &_r) { CInt2IntMap s; for (CIntSet::const_iterator p = _r.begin(); p != _r.end(); ++p) s.insert(std::make_pair(*p, s.size())); return s; }

2 2

working with code::blocks
by Lú 10 Oct '08

10 Oct '08

Dear users, I'm trying to install the boost library in my PC to work with Code::Blocks software, which uses MINGW, and it doesn't seem to be working well. Two configurations were tested, in Windows XP and in Ubuntu (Hard Heron), it doesn't exactly fail to install in Ubuntu, but my #include/boost/?? never finds the headers. Is there something I should be doing that is not in the Getting Started manual? Thanks in advance! Lu

3 3

boost 1.36 on fedora 7
by Sameer Agarwal 10 Oct '08

10 Oct '08

Hello Everyone, I am trying to compile boost 1.36.0 with gcc 4.1.2 on Fedora 7 and while compiling extension.cpp in boost.python, it triggers an internal compiler error --------- gcc.compile.c++ bin/gcc-4.1.2/debug/extending.o ../../../../boost/type_traits/detail/cv_traits_impl.hpp: In instantiation of ‘const bool boost::detail::cv_traits_imp<<unnamed>::hello*>::is_const’: ../../../../boost/type_traits/is_const.hpp:53: instantiated from ‘boost::is_const<<unnamed>::hello>’ ../../../../boost/python/detail/cv_category.hpp:31: instantiated from ‘boost::python::detail::cv_category<<unnamed>::hello>’ ../../../../boost/python/detail/unwind_type.hpp:58: instantiated from ‘typename Generator::result_type boost::python::detail::unwind_ptr_type(U*, Generator*) [with Generator = boost::python::converter::detail::unwind_type_id_helper, U = <unnamed>::hello]’ ../../../../boost/python/detail/unwind_type.hpp:127: instantiated from ‘static typename Generator::result_type boost::python::detail::unwind_helper2<2>::execute(U& (*)(), Generator*) [with Generator = boost::python::converter::detail::unwind_type_id_helper, U = <unnamed>::hello]’ ../../../../boost/python/detail/unwind_type.hpp:165: instantiated from ‘typename Generator::result_type boost::python::detail::unwind_type(boost::type*, Generator*) [with Generator = boost::python::converter::detail::unwind_type_id_helper, U = <unnamed>::hello&]’ ../../../../boost/python/converter/pytype_function.hpp:45: instantiated from ‘boost::python::type_info boost::python::converter::detail::unwind_type_id_(boost::type<T>*, mpl_::false_*) [with T = <unnamed>::hello&]’ ../../../../boost/python/converter/pytype_function.hpp:68: instantiated from ‘static const PyTypeObject* boost::python::converter::expected_pytype_for_arg<T>::get_pytype() [with T = <unnamed>::hello&]’ ../../../../boost/python/detail/signature.hpp:98: instantiated from ‘static const boost::python::detail::signature_element* boost::python::detail::signature_arity<1u>::impl<Sig>::elements() [with Sig = boost::mpl::vector2<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, <unnamed>::hello&>]’ ../../../../boost/python/detail/caller.hpp:232: instantiated from ‘static boost::python::detail::py_func_sig_info boost::python::detail::caller_arity<1u>::impl<F, Policies, Sig>::signature() [with F = std::string (<unnamed>::hello::*)()const, Policies = boost::python::default_call_policies, Sig = boost::mpl::vector2<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, <unnamed>::hello&>]’ ../../../../boost/python/object/py_function.hpp:48: instantiated from ‘boost::python::detail::py_func_sig_info boost::python::objects::caller_py_function_impl<Caller>::signature() const [with Caller = boost::python::detail::caller<std::string (<unnamed>::hello::*)()const, boost::python::default_call_policies, boost::mpl::vector2<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, <unnamed>::hello&> >]’ extending.cpp:40: instantiated from here ../../../../boost/type_traits/detail/cv_traits_impl.hpp:37: internal compiler error: in make_rtl_for_nonlocal_decl, at cp/decl.c:5069 ------------- Is anyone else seeing this? Also has anyone had any luck compiling boost with the intel compiler suite (version 10.1) on linux? Thanks, Sameer

1 0

MSVC _SECURE_SCL causes ABI change, ODR violation - mangle library names?
by Jean-Francois Bastien 10 Oct '08

10 Oct '08

The _SECURE_SCL macro in Visual Studio's (Dinkumware's) STL changes the ABI for standard types, which causes silent ODR violations when Boost static libraries and the main program linking with them don't define this macro the same way. This problem manifests itself as runtime crashes. There's been discussion before (see links at the end) to solve this by using different library names in the build system to distinguish different ABIs. The discussions brought up issues: - _SECURE_SCL implies a performance cost. - _SECURE_SCL might not be conformant with the complexity requirements (no clear conclusion was reached on this). - Should the compiler's default behaviour be Boost's default (i.e. _SECURE_SCL isn't defined)? - The Windows version of the Intel compiler has a bug around partial function template ordering which can be solved by defining _SECURE_SCL to 0. There's already a Trac issue for this: http://svn.boost.org/trac/boost/ticket/2086 Could we reach a consensus on adding this to the library name mangling? Is it too late for 1.37.0? Thanks, JF References: msvc toolset addition stl-security-theater http://lists.boost.org/boost-build/2008/09/index.php#20072 High Cost of MS "Safe" STL for Release Builds http://lists.boost.org/boost-build/2008/04/18828.php System: error_code.cpp #definesmacroswithoutchecking if already defined http://lists.boost.org/boost-build/2008/04/18754.php What plans to handle _SCEURE_SCL in the boost build system? http://lists.boost.org/Archives/boost/2008/04/index.php#136481 Intel compiler - does anyone care? http://lists.boost.org/Archives/boost/2008/01/index.php#132079 bjam define=_SECURE_SCL shows no effect http://lists.boost.org/boost-users/2007/05/index.php#27928 Bug/Incompatibility: Visual C++ 2005 checkediteratorslead to major crashes http://lists.boost.org/Archives/boost/2006/06/index.php#106415 vc 8 secure stl/runtime and boost http://lists.boost.org/boost-users/2005/12/index.php#15843

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printing data sorted based on a specific key in boost multi-index container
by Ramesh 10 Oct '08

10 Oct '08

Hi Joaquin, Supposing I have a container having three unique keys, Is there a way I can print data sorted by one of they keys? At the moment I tried a raw dump - it shows fields based on the first key (which is key1). Thanks Ramesh ---- typedef multi_index_container< MyMap, indexed_by< ordered_unique< tag <Key1>, BOOST_MULTI_INDEX_MEMBER(MyMap,std::string,Key1)>, ordered_non_unique< tag<Key2>,BOOST_MULTI_INDEX_MEMBER(MyMap,unsigned long,Key2)>, ordered_unique< tag<Key3>,BOOST_MULTI_INDEX_MEMBER(MyMap,unsigned long,Key3)> > > tMyMap; class MyContainer { private: tMyMap MapObj; public: Show(){ for (MyMap::iterator it = MyContainer.begin(), itend = MyContainer.end(); it != itend;++it) { cout << it->Key1; cout << it->Key2; cout << it->Key3; } } }; main() { MyContainer M; // Assuming I have data inserted in the container like // ("Id 4", 10, 10) // ("Id 1", 10, 40) // ("Id 5", 30, 60) M.Show() // The result is as below: //("Id 5", 30, 60) // ("Id 1", 10, 40) // ("Id 4", 10, 10) }

2 1

[multi_array] Slices, views and sub_arrays
by Robert Jones 10 Oct '08

10 Oct '08

Hi All I'm still plugging away at trying to make use of multi_array, but I seem to be having a few problems! I suspect my understanding of the basic paradigm is flawed. I'm bit confused about views and slices. If I start with a rectangular, 2 dimensional grid, take a view of the whole grid, and then use a single subscript to index into that view, then I expected the result to be a view of one less dimension then the original view. However, it seems to be a "sub_array". #include "boost/multi_array.hpp" struct Cell { int i; }; int main( ) { typedef boost :: multi_array_types :: index_range range; boost :: multi_array< Cell, 2 > grid( boost :: extents[ 9 ][ 9 ] ); boost :: multi_array< Cell, 2 > :: const_array_view< 2 > :: type const_grid_view = grid[ boost :: indices[ range( ) ][ range( ) ] ]; boost :: multi_array< Cell, 2 > :: const_array_view< 1 > :: type const_row_view = const_grid_view[ 5 ]; return 0; } The error message from the last assignment is this sample.cpp: In function `int main()': sample.cpp:13: error: conversion from `boost::detail::multi_array::const_sub_array<Cell, 1u, const Cell*>' to non-scalar type `boost::detail::multi_array::const_multi_array_view<Cell, 1u, const Cell*>' requested which seems to confirm I've got all my consts and dimensions correct. So, why is this wrong? Also, does the return type of sub_array, rather than array_view, mean that the contents of the relevant cells have been copied? Thanks - Rob.

1 0

program option::force to suppy only short name
by Lloyd 10 Oct '08

10 Oct '08

Hi, I am using boost program options library Can I supply only "short names" eg. options_desctiprion desc("sample"); desc.add_options() ("help,h","display help") (",c","compress") ; in the case of option "c" we don't want to allow the user to supply a long name. Howe can we do this? Thanks, Lloyd ______________________________________ Scanned and protected by Email scanner

3 3

Re: [Boost-users] mpl programming task
by peter_foelsche＠agilent.com 09 Oct '08

09 Oct '08

I think the following code would be easier: #include <map> #include <vector> typedef std::map<size_t, size_t> CInt2IntMap; typedef std::vector<size_t> CIntVector; static CInt2IntMap convert(const CIntVector &_r) { CInt2IntMap s; for (size_t i = 0; i < _r.size(); i++) s.insert(std::make_pair(_r[i], s.size())); return s; }

1 0

mpl programming task
by peter_foelsche＠agilent.com 09 Oct '08

09 Oct '08

Anybody able to tell me how to convert the following code into it's mpl equivalent? #include <map> #include <vector> typedef std::map<size_t, size_t> CInt2IntMap; typedef std::vector<bool> CBooleanVector; static CInt2IntMap convert(const CBooleanVector &_r) { CInt2IntMap s; for (size_t i = 0; i < _r.size(); i++) if (_r[i]) s.insert(std::make_pair(i, s.size())); return s; }

1 0

boost::variant construction,assignment
by Hicham Mouline 09 Oct '08

09 Oct '08

hello, class parameters { public: parameters(); ~parameters(); const R& getR() const; void setR(const R& rhs); const V& getV() const; void setV(const V& rhs); private: const R* r_; const V* v_; }; R and V are typedefs of variant<>. I have chosen to make the private members r_ and v_ as pointers to allow for r_=0 and v_=0 (is this a "never do this" thing?). R setter is implemented like this: void parameters::setR(const R& rhs) { if (!r_) r_ = new R( rhs ); else *r_ = rhs; } then ~parameters() { if (r_) delete r_; } There is no operator= for variant<> it seems? regards,

4 6

Re: [Boost-users] [Graph] Subgraphs with bundled properties
by Cooprider, Nathan (US NonSSA) 09 Oct '08

09 Oct '08

I would like to use a set to store my nodes inside a graph that uses subgraphs, but that does not seem to work. The code below does not compile if I switch vecS to setS and adjust the vertex properties to have an index (replace Node, with the commented portion after it). However, not using a subgraph and having the adjacency list be the graph directly fixes the issue. Any insights as to what I should do Nathan #include <string> #include <boost/graph/adjacency_list.hpp> #include <boost/config.hpp> #include <boost/graph/subgraph.hpp> using namespace boost; struct Node { std::string name; float weight; }; // want vecS to be setS for fast lookups typedef adjacency_list < listS, setS, directedS, Node, // property<vertex_index_t, int, Node >, property<edge_index_t, int> > PlainGraph; typedef subgraph<PlainGraph> Graph; int main () { Graph g; Graph::vertex_descriptor tmp = add_vertex(g); struct Node x; put(get(vertex_bundle,g), tmp, x); }

1 0

[Python] rule python-extension unknown
by Robert MacHardy 09 Oct '08

09 Oct '08

Boost Users, I am trying to build the Hello World python example. When I execute bjam I get the "rule python-extension unknown" error. I believe this to be because my user-config.jam file is never being used. The tutorial states to configure the rules in the user-config.jam file in my home directory. My home directory is "C:\Documents and Settings\robert.machardy". I did not find the file there, and this does not appear to be the place for jam files. I found the file user-config.jam in "C:\Program Files\boost\boost_1_36_0\tools\build\v2", I edited it and copied to my home directory. I configured it for the following: # Configure specific msvc version (searched for in standard locations and PATH). using msvc : 7.1 ; using python : 2.6 : C:\Program Files\Python26; Please help. Thank you, Robert MacHardy

4 7

Re: [Boost-users] boost::variant construction,assignment
by Hicham Mouline 09 Oct '08

09 Oct '08

Thank you. I apologize, one often fails to grasp the obvious, regards, > ----- Original Message ----- > From: "Steven Watanabe" <watanabesj(a)gmail.com> > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] boost::variant construction,assignment > Date: Thu, 09 Oct 2008 10:06:05 -0700 > > > AMDG > > Hicham Mouline wrote: > > const R* r_; > > > > > > *r_ = rhs; > > > > > > There is no operator= for variant<> it seems? > > > > Sure there is, but only works for non-const variant<>s. > > In Christ, > Steven Watanabe

1 0

boost::program_options
by Duy Nguyen 09 Oct '08

09 Oct '08

When I try to use the boost::program_options library to read a property file, I got the error when I run "make" on Cygwin (I installed Cygwin on WIndows XP). > make g++.exe -I /cygdrive/c/MyTest/Test1/include/boost-1_34_1/ -c TestInit.cpp Test.cpp TestDriver.cpp g++.exe -I /cygdrive/c/MyTest/Test1/include/boost-1_34_1/ -c TestInit.cpp Test.cpp TestDriver.cpp g++.exe -I /cygdrive/c/MyTest/Test1/include/boost-1_34_1/ -c TestInit.cpp Test.cpp TestDriver.cpp g++.exe TestInit.o Test.o TestDriver.o -o "TestDriver" -L/cygdrive/c/MyTest/Test1/lib -lboost_program_options-gcc34-mt-d-1_34_1 -lg2c Info: resolving vtable for boost::program_options::variables_mapby linking to __imp___ZTVN5boost15program_options13variables_mapE (auto-import) Then when I run my program, it does not work. If I comment out the "try ... catch" block which uses the boost::propram_options library then it compiles and works fine. Please show me how to fix it. Thank you.

6 5

shared_ptr and std::set::erase
by Javier Jerónimo 09 Oct '08

09 Oct '08

Hello, I have: std::set< boost::shared_ptr< A > > m_set; and when I try to do: m_set.erase( somesharedptr ); the shared_ptr is not removed from the set. There is already a shared_ptr object pointing to the same A object inside the set. I think it's because the definition of "shared_ptr<>::operator<" and its use in std::set<>::erase. What's the correct way of using a shared_ptr inside a set? Thanks.

3 2

Re: [Boost-users] [boost-users][serialization] porting to windows ce?
by Bobby Nations 09 Oct '08

09 Oct '08

Ack, I found a spot where I fat-fingered the code at fault when writing the original message. Please replace ::boost::detail::false_t value; With typename ::boost::detail::false_t value; It doesn't seem to make a difference in the actual error messages themselves, but typos are never good. In case anyone asks, I'm trying to compile against the 1.34.1 release using Visual Studio 2005 SP1 to compile the source via the solution and project files found in "boost\libs\serialization\vc7ide". I also have a patch file that has all of my changes if it might help. Granted it's pretty big (~12 meg) because VS2005 upgraded all of the project files, but I can make it available if it would help. Thanks, Bobby Nations

1 0

[multi-index] Segmentation fault during erase
by Joshua Moore-Oliva 09 Oct '08

09 Oct '08

(I am using 64-bit boost 1.33.1, gcc version 4.1.2) I am trying to track down an elusive segmentation fault that occurs after days of running a program. I am wondering if I am using the boost multi-index library incorrectly. I have a coredump that gives the following backtrace (full backtrace at the end of this email). at /usr/include/boost/multi_index/detail/ord_index_node.hpp:274 a274 while(x!=root&&(x==0 || x->color()==black)){ having looked at the code in that function, I can only assume it is called as a result of these two following lines: (Attempting to erase the first member of the index). CallQueue::nth_index<CALL_NEXT_CALL_TIME>::type & timeIndex = this->m_calls.get<CALL_NEXT_CALL_TIME>(); timeIndex.erase( timeIndex.begin() ); I am certain that the queue is not empty, as the following methods guard against an empty queue. (Shown in an excerpt of my relevant code at the bottom of this email). Finally, my definition for the m_calls structure and #defines for the indexes follow at the end of this email. My program is very clean memory wise, having run a fairly extensive test suite through valgrind, so the possibility of other memory errors compounding are low. My main question is if I am using the multi-index library incorrectly, or if there is a bug in the multi-index library. Failing that, any insight as to why I would be getting this error is appreciated :). Thanks, Josh %%%START m_calls structure%%% typedef boost::multi_index::multi_index_container< Call * , boost::multi_index::indexed_by< boost::multi_index::ordered_unique< BOOST_MULTI_INDEX_CONST_MEM_FUN( Call , int , getId ) > , boost::multi_index::ordered_non_unique< BOOST_MULTI_INDEX_CONST_MEM_FUN( Call , const boost::posix_time::ptime & , getNextCallTime ) > > > CallQueue; CallQueue m_calls; %%%END m_calls structure%%% %%%START #defines for m_calls indexes%%% #define CALL_ID 0 #define CALL_NEXT_CALL_TIME 1 %%%END #defines for m_calls indexes%%% %%%START MY CODE%%% Call * PhoneList::getNextCall() { if ( this->m_calls.empty() ) { throw NoAvailableCallException(); } CallQueue::nth_index<CALL_NEXT_CALL_TIME>::type::iterator pos = this->m_calls.get<CALL_NEXT_CALL_TIME>().begin(); return *pos; } Call * PhoneList::popAvailableCall() { Call * c = this->getNextCall(); if ( c->getNextCallTime() > LocalTime::getInst()->getCachedTime() ) { throw NoAvailableCallException(); } CallQueue::nth_index<CALL_NEXT_CALL_TIME>::type & timeIndex = this->m_calls.get<CALL_NEXT_CALL_TIME>(); timeIndex.erase( timeIndex.begin() ); /*************BELIEVED THAT ERROR ORIGINATES HERE****************/ return c; } %%%END MY CODE%%% %%%START GDB BACKTRACE%%% #0 0x000000000044a7fd in Database::AQM::QueueEngine::PhoneList::popAvailableCall (this=<value optimized out>) at /usr/include/boost/multi_index/detail/ord_index_node.hpp:274 a274 while(x!=root&&(x==0 || x->color()==black)){ (gdb) backtrace #0 0x000000000044a7fd in Database::AQM::QueueEngine::PhoneList::popAvailableCall (this=<value optimized out>) at /usr/include/boost/multi_index/detail/ord_index_node.hpp:274 #1 0x000000000044664c in Database::AQM::QueueEngine::Controller::getCall (this=0x6d54d0) at Controller.cpp:83 #2 0x0000000000411d55 in Database::AQM::Controller::getCall (this=<value optimized out>) at Controller.cpp:75 #3 0x000000000041169b in Control::AQM::Controller::getCall (this=<value optimized out>) at Controller.cpp:27 #4 0x000000000040a01b in Boundary::AQM::RequestSocket::Controller::getCall (this=<value optimized out>) at Controller.cpp:43 #5 0x000000000045a703 in Boundary::AQM::RequestSocket::GetCallRequest::perform (this=<value optimized out>) at GetCallRequest.cpp:17 #6 0x0000000000410564 in Boundary::AQM::RequestSocket::RequestSocket::OnLine (this=0x6d31f0, l=@0x6d3340) at RequestSocket.cpp:30 #7 0x0000000000483829 in TcpSocket::ReadLine (this=0x6d31f0) at TcpSocket.cpp:810 #8 0x0000000000480a9c in SocketHandler::Select (this=0x42802b90, tsel=0x42802b70) at SocketHandler.cpp:395 #9 0x0000000000482e25 in SocketHandler::Select (this=0x2aaab04c8b98, sec=<value optimized out>, usec=1297040160) at SocketHandler.cpp:227 #10 0x000000000040ee6b in Boundary::AQM::RequestSocket::RequestPoller::run (this=0x2aaab0000e40) at RequestPoller.cpp:84 #11 0x00002aaaaad15c3f in boost::function0<void, std::allocator<boost::function_base> >::operator() () from /usr/lib64/libboost_thread.so.2 #12 0x00002aaaaad156bf in boost::thread_group::join_all () from /usr/lib64/libboost_thread.so.2 #13 0x0000003aa56062f7 in start_thread () from /lib64/libpthread.so.0 #14 0x0000003aa4ace86d in clone () from /lib64/libc.so.6 #15 0x0000000000000000 in ?? () %%%END GDB BACKTRACE%%%

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Question on boost multi-index container erase method
by Ramesh 09 Oct '08

09 Oct '08

Hello Joaquin, I am trying to erase a record in the container based on keys - in my case both the keys are ordered and unique and I need to have ways to delete records based on either of the keys. I tried to erase an element based on key2 & I got the following error: "error: no matching function for call to 'boost::multi_index ....<Error runs for more than a page> :erase(boost::multi_index::detail::index_iterator <boost::multi_index::detail::ordered_index_node<boost::multi_index::detail ::index_node_base<MyMap> > >&)' The compiler is perhaps complaining that I havent provided a prototype for erase in the map? In my case I wish to erase the record pointed by the iterator (In another class I had a single index and I didnt have the need to provide a prototype, is it because I have two 'unsigned long' keys that the compiler expects a prototype? )- Kindly help me fix this error. My code is posted as below: Thanks /R --- //fwd decl class A; struct MyMap { unsigned long key1; unsigned long key2; A *pObj; MyMap(unsigned long param_key1, unsigned long param_key2, A *param_pObj): key1(param_key1), key2(param_key2), pObj(param_pObj){} ~LCMap(){ key1 = 0; key2 = 0; pObj = 0; } }; struct key1{}; struct key2{}; typedef multi_index_container< MyMap, indexed_by< ordered_unique< tag <key1>, BOOST_MULTI_INDEX_MEMBER(MyMap, unsigned long, key1)>, ordered_unique< tag <key2>, BOOST_MULTI_INDEX_MEMBER(MyMap, unsigned long, key2)> > >tMapDef; class MyWrap { private: MyMap MyContainer; .. public: insert(UINT32, UINT32, A *); erasebykey2(unsigned long); }; bool MyWrap::erasebykey2(unsigned long param_key2) { bool ret = FALSE; typedef tMapDef::index<key2>::type tKey2Type; tKey2Type& key2_index = MyContainer.get<key2>(); tMapDef::index_iterator<key2>::type it = key2_index.find(param_key2); if (it == key2_index.end()) { cout << "No matching Recs with key2" <<endl<<; return FALSE; } tMapDef::size_type status = MyContainer.erase(it); }

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