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[program_options] linking error with example
by katharina 19 Jan '10

19 Jan '10

Hi, I have problems starting out with the program_options library. Looking at the tutorial, I wanted to try out the first example metioned, first.cpp (which is located in boost_1_41_0/libs/program_options/example). But there seems to be some linking error. I try to compile it by g++ -I ~boost_1_41_0 first.cpp -o first ~/boost_1_41_0/stage/lib/libboost_program_options.a But then I get a strange error: /tmp/ccDB6KSC.o: In function `boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE12extra_parserENS_9function1ISt4pairISsSsERKSsSaINS_13function_baseEEEE[boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)]+0x27): undefined reference to `boost::program_options::detail::cmdline::set_additional_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)' collect2: ld returned 1 exit status What am I doing wrong? Thanks, Katharina

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[spirit] boost 1.33.1, HP-UX ia64 & gcc-3.4.6 - doesn't work with optimization (-O2)
by Frank Bergemann 19 Jan '10

19 Jan '10

Hi, some supplementary information: The problem happens also for gcc-3.4.6 - which is the final version of gcc-3.x.x series. If i compile for 32 bit there is even a coredump for execution: (gdb) r Starting program: /nfs/uh01/frank/TESTX/sample test is '<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">' Program received signal SIGBUS, Bus error si_code: 1 - BUS_ADRALN - Invalid address alignment. Please refer to the following link that helps in handling unaligned data: http://docs.hp.com/en/7730/newhelp0610/pragmas.htm#pragma-pack-ex3. boost::spirit::grammar<basic_xml_grammar<char>,boost::spirit::parser_context<boost::spirit::nil_t> >::grammar (this=0x40025cf0) at sp_counted_base_gcc_ia64.hpp:38 38 "r"(pw)); I opened a bug for gcc: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42791 And i asked HP for confirmation. I'll keep you informed... best regards, Frank ___________________________________________________________ Preisknaller: WEB.DE DSL Flatrate für nur 16,99 Euro/mtl.! http://produkte.web.de/go/02/

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fusion struct adapt macro, construct the struct from a fusion vector
by Hicham Mouline 19 Jan '10

19 Jan '10

Hello, I have a struct params { ... }; and I have adapted it as a fusion sequence. However I can't construct a params from a boost::fusion::vector<> with the same types. const params p( v ); // v is a fusion::vector with the same type const params p = v; // both failed to compile Do I need to actually write a specific ctor for params? Will it change the result of the adapt macro? Can I iterate with an algorithm over the vector at runtime to assign to p from v? with fusion::for_each() I couldn't write the functor that would let me assign to p. Regards,

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[boost.asio] Flush serial port buffers?
by Pascal Kesseli 18 Jan '10

18 Jan '10

Hi everyone My program currently writes some characters to a device connected over the serial interface and subsequently changes the baud rate, followed by sending some more characters. The problem is that the first transfer does not seem to complete before the baud rate switch and thus is sent with the new baud rate, which is not supposed to happen. What I am looking for is something like a flush() before changing the baud rate. Using: boost::asio::write(*port, buffer(buf, size), transfer_all()); does not seem to work. Any suggestions? Thanks and best regards Pascal _________________________________________________________________ Personalisiere dein Messenger, inklusive persönliche Smileys ;-) Überrasche deine Freunde - wir zeigen dir wie's geht. http://rubrik.ch.msn.com/reportagen/personalisieren.aspx

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Boost MultiArray and Boost uBLAS - Designed to be used together?
by Bilokon, Paul 18 Jan '10

18 Jan '10

Hi all, Were Boost MultiArray and Boost uBLAS designed to be used together? I.e. can I apply linear algebra operations to Boost MultiArrays and get Boost MultiArrays back? If this is impossible / impractical / inefficient, what's the right approach (conversion?). I would be very keen to know your thoughts on this. Many thanks for your help. Best wishes, Paul Paul Bilokon, Vice President Citigroup | FX - Options Trading | Quants 33 Canada Square | Canary Wharf | Floor 3 London, E14 5LB Phone: +44 20 798-62191 paul.bilokon(a)citi.com<mailto:paul.bilokon@citi.com>

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[spirit] boost 1.33.1, HP-UX ia64 & gcc-3.4.4 - doesn't work with optimization (-O2)
by Frank Bergemann 18 Jan '10

18 Jan '10

Hello, i posted a problem against boost::serialization. (http://article.gmane.org/gmane.comp.lib.boost.user/54935) But now i could track it down to boost::spirit. I have extracted boost::serialization stuff , which is dealing with boost spirit, in a mini demo program (see attached tar file). It accepts XML input if compiled with -O0 or -O1 and returns: |hpux03 407> make sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O1 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c sample.cc /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O1 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c fbe_basic_xml_grammar.cc ./sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O1 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -lunwind -o sample sample.o fbe_basic_xml_grammar.o |hpux03 408> ./sample test is '<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">' parse_start_tag('<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">') returned 1 But it fails, if i use -O2 or -O3: |hpux03 411> make sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O2 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c sample.cc ./sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O2 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c fbe_basic_xml_grammar.cc /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O2 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -lunwind -o sample sample.o fbe_basic_xml_grammar.o |hpux03 412> ./sample test is '<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">' parse_start_tag('<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">') returned 0 Is it a bug of gcc-3.4.4? (for HP-UX B11.31 ia64?) Or boost::spirit using experimental C++ feature (for level of gcc-3.4.4)? - many thanks! Frank Bergemann ______________________________________________________ GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de

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[boost][interval containers (itl)] New library release on sourceforge
by Joachim Faulhaber 18 Jan '10

18 Jan '10

Dear boost users, I have developed a library of interval containers called Interval Template Library (ITL). The library, initially developed in an software industrial context, was proposed at the boost developer's list in May 2008, refined according to boost standards, presented at boostcon09 and submitted for a formal review in September 2009. Hartmut Kaiser is now supporting the ITL as review manager. I have uploaded a new release of the core library of interval containers (itl), extensions (itl_xt) and a test tool (validate) for law based automated testings as itl_plus_3_2_1 at the itl's project site at sourceforge: http://sourceforge.net/projects/itl/ Interval_sets and interval_maps of the ITL proved to be very useful in many fields the most important of which is the date and time problem domain. * Interval_sets and interval_maps can be used like the sets or maps of elements. Yet they are much more space and time efficient when the elements occur in contiguous chunks. * Interval containers allow for intersection with interval_sets to work with segmentation. For instance you might want to intersect an interval container with a grid of months and then iterate over those months. * The ITL comes with a universal mechanism of aggregation, that allows to combine associated values in meaningful ways when intervals overlap on insertion. Aggregation results that are difficult to obtain by handwritten algorithms can be computed in an abstract and simple way. * itl::interval_bitset is a self compressing class to represent very large bitsets. It combines interval and bitset compression. * You can get an instant impression of the usefulness of interval containers by looking at the collection of examples: http://www.herold-faulhaber.de/boost_itl/doc/libs/itl/doc/html/boost_itl/ex… * To get an overview over the itl's api refer to http://www.herold-faulhaber.de/boost_itl/doc/libs/itl/doc/html/boost_itl/in… I hope you will find this useful. In case you do, I'd like to encourage you to send in your feed back and suggestions and to participate in the upcoming review on the boost developer's list. Best regards Joachim Faulhaber --------------------------------------------------------------------- Interval Template Library (ITL) | Boost.IntervalContainers --------------------------------------------------------------------- Availability: Project page at sourceforge: http://sourceforge.net/projects/itl/ Boost Vault: http://www.boostpro.com/vault/index.php?&direction=0&order=&directory=Conta… Boost Quickbook documentation (core library itl) http://www.herold-faulhaber.de/boost_itl/doc/libs/itl/doc/html/index.html Doxygen Documentation (extensions itl_xt, validate) http://www.herold-faulhaber.de/itl/index.html The name ITL is provisional and will probably be changed to Boost.IntervalContainers after the review.

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[math][special_functions] Why is cbrt(x) slower than pow(x, 1/3)?
by Tim Odenthal 18 Jan '10

18 Jan '10

Hi! For a (cell) simulation code I have to calculate lots of cubic roots in every timestep. So I tried to improve performance on my first guess, namely pow(x, 1/3) using boost::math::cbrt(). To my astonishment, this is much slower than the original code. I wrote a small test program to check this claim; compiling with g++ (Ubuntu 4.4.1-4ubuntu9) 4.4.1 (-O3) on a Intel Core i7 CPU I get the following timings (averaging the time over 10 trials): average time to compute 5000000 roots with pow(): 0.603 s. average time to compute 5000000 roots with boost::cbrt(): 1.087 s. average time to compute 5000000 roots with improved boost::cbrt(): 1.015 s. average time to compute 5000000 roots with exp(1/3*log()): 0.541 s. My "improved" version allows giving the boost::math::cbrt() method a first guess instead of taking just the value of the number whose root is to be calculated. Actually, the function I called in this instance 5000000 times does a bit more than just calculating the root; I want to calculate the radii of to spheres which overlap so, that their combined volume is equal to the volume of a "mother sphere": /** * @brief calculates the radius of a daughter cell during symmetric division, * assuming the volume of the mother cell is conserved. * * @param MotherRadius radius of mother cell before division * @param Overlap of the two daughter cells, i.e. radius of daughter - * distance from center of daughter to middle-plane of * both cells * * @return for positive overlap returns positive radius, for negative overlap * negative radius **/ double daughterRadiusfOver( double MotherRadius, double Overlap) { // r = 1/2 (2 sqrt(R^6-h^3 R^3)-h^3+2 R^3)^(1/3)+h^2/(2 (2 sqrt(R^6-h^3 R^3)- h^3+2 R^3)^(1/3)) double O3 = Overlap*Overlap*Overlap; double M3 = MotherRadius*MotherRadius*MotherRadius; double step1 = pow(-O3 + 2*sqrt(-O3*M3 + M3*M3) + 2*M3,1.0/3.0);//<-- CUBIC ROOT HERE!!! Change to: // double step1 = boost::math::cbrt(-O3 + 2*sqrt(-O3*M3 + M3*M3) + 2*M3); if ( Overlap < 0 ){ cerr << "Warning in daughterRadiusfOver: Negative overlap given!" <<endl; return -(step1 + Overlap*Overlap/step1)*0.5; } else { return (step1 + Overlap*Overlap/step1)*0.5; } } Why is boost::math::cbrt() no improvement for me - or am I using it the wrong way? For which cases might it be an improvement, or why is it in the library? It's funny, but I found that std::exp(1/3*std::log(x)) is so far the fastest way... Thanks in advance Tim

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boost::format warning
by Henning Meyer 16 Jan '10

16 Jan '10

Hello, when compiling a simple test like this: #include <boost/format.hpp> int main(void) { int c = 0; boost::format("%1% %2%") % (c==42) % c++; } with this command: $ c++ -c -O -Wall -o ftest.o ftest.cc I get this warning: ftest.cc: In function ‘int main()’: ftest.cc:4: warning: operation on ‘c’ may be undefined What did I do wrong? Thanks for the help! Henning $ c++ -v Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.1-4ubuntu8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu Thread model: posix gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) $ uname -a Linux treponema 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686 GNU/Linux

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[filesystem] boost 1.41, hpux, gcc 440, compilation error solved
by Rui Pedro Fernandes 15 Jan '10

15 Jan '10

Hi, While trying to compile filesystem under HPUX because the WCHAR_MAX define value used was including a ')' character (because the value has a cast). The include file wchar.h defines the correct WCHAR_MAX if macro _INCLUDE_STDC__SOURCE_199901 is defined. I then solved the problem by changing the filesystem's Jamfile.v2 to add the lines: : requirements <host-os>hpux,<toolset>gcc:<define>_INCLUDE_STDC__SOURCE_199901 Don't know however if this is the best way to solve the issue... Thanks, Rui

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Dead link on main page
by Tim St. Clair 15 Jan '10

15 Jan '10

Version 1.40.0.cmake2 (Boost + CMake) goes to no where. -- Cheers, Timothy St. Clair

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[serialization] boost 1.33.1, HP-UX ia64 & gcc-3.4.4
by Frank Bergemann 15 Jan '10

15 Jan '10

Hi, for a porting job i needed to shift from OSF tru64 to HP-UX V3 ia64 (on both using gcc-3.4.4) There i have stream error exception for boost::serialization data import via XML. The exception is thrown here: include/boost/archive/impl/basic_xml_iarchive.ipp: template<class Archive> BOOST_ARCHIVE_OR_WARCHIVE_DECL(void) basic_xml_iarchive<Archive>::load_start(const char *name){ // if there's no name if(NULL == name) return; bool result = this->This()->gimpl->parse_start_tag(this->This()->get_is()); if(true != result){ boost::throw_exception( archive_exception(archive_exception::stream_error) ); } // don't check start tag at highest level ++depth; return; } I.e. it fails to parse the XML data via boost:spirit. I tried to debug with 'gdb', but was impossible for me at the level of boost::spirit parser implementation. Then i was remembering, that there are two sets of boost libs - one "normal" and a "debug" version. So i switched to the debug version - just to see, if i can better dig into the details with 'gdb' with it. And suddenly the problem was gone. I.e. my application works, if i link with libboost_serialization-gcc-d.a But it doesn't work, if i link with libboost_serialization-gcc.a I also tried to extract all the stuff from the boost::serialization, that is used by my application, into a little test program. Just to feed in the same XML string, that fails for my application. I wanted to see, that i can re-produce the problem - but for a minimum program. - for using that next to evaluate deeper. But - unfortunately - for my test programm it works (with both library versions, "debug" and "normal" one). So it is really hard to find the reason for the problem. I also checked about compiler support on the boost.org pages. And actually it was only boost lib 1.38.0, which mentions HP-UX IA64 together with gcc. But that was gcc-4.2.1 (i use 3.4.4.). Before 1.38.0, it was alway the HP native compiler (not gcc). After 1.38.0 HP-UX is not mentioned at all anymore. So i guess i am generally in bad conditions for my "constellation" (HP-UX ia64 V3, gcc-3.4.4, boost 1.33.1). What is the difference about "debug" lib image and "non-debug" lib image? Is it just optimization level for the compiler? Do you have any hint for me? It might be a problem of gcc-3.4.4 itself on hp-ux (i'll check). But it would be interesting to here, if s.o. else had the same problem(?!) - many thanks! Frank Bergemann ____________________________________________________________________ WEB.DE MillionenKlick: Kostenlos tippen, täglich 1 Million gewinnen! http://produkte.web.de/go/07/

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How to use boost-build/bjam with only home directory acces?
by s seelenluft 15 Jan '10

15 Jan '10

Hi, I have successfully installed boost-build and bjam on a Linux workstation where I only had access to my home folder, but I have trouble replicating this on another. I put the boot-build folder at the top level of my home folder and created also a bin folder there into which I copied the content of boost-build folder and the bjam binary. I then added an environmental variable BOOSTROOT with the value '../' and set my jamroot file to <include>$BOOSTROOT. I can now start bjam from folders one level below the home folder. On a different Linux system this fails with the error: Unable to load Boost.Build: could not find "boost-build.jam" --------------------------------------------------------------- Attempted search from /afs/.../trunk-1 up to the root and in these directories from BOOST_BUILD_PATH and BOOST_ROOT: /usr/share/boost-build. Please consult the documentation at 'http://www.boost.org'. The boost-build.jam file sits in the same folder as bjam (~/bin) but on one system bjam finds it and on another it does not. The folder /usr/share/boost-build does not exist and I do not have the permission to create it. I've used boost-jam 3.1.13 on both systems (since it worked fine on one system, I was loth to change anything). This was the current version when I started the whole business. In short: Is there any way to tell bjam to use the local boost-build.jam file? Thanks. Markus

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[karma] using attributes out of order
by Cory Nelson 15 Jan '10

15 Jan '10

Hello, I was fairly familiar with Spirit 1, but I'm now making my first foray into Spirit 2. I'm trying to write something with karma's attribute system. Say I've got a fusion adapted struct: struct s { int foo; double bar; std::string baz; }; The Spirit docs give plenty of examples like: int_ << double_ << string But I can't find any docs showing how to output the members in a different order, like: double_ << string << int_ Is there a recommended way to achieve this? Thanks! -- Cory Nelson

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BoostJam sensitive to spaces in paths, in particular in TMP
by Bilokon, Paul 15 Jan '10

15 Jan '10

Hi all, Just found this, apparently a bug, in BoostJam. I'm using an admittedly old version of Boost, V1.36.0, in this particular instance. I'm using the latest BoostJam, V3.1.17. This occurs on Windows when the TMP environment variable contains spaces. In my case it was "C:\Documents and Settings\xxxxxxxxxxx\Local Settings\Temp" When you try to run something like C:\Programs\Win32\BoostJam\V3.1.17\bjam.exe --build-type=complete --toolset=msvc-90 --with-thread You get MkDir1-quick-fix-for-windows bin.v2\libs\thread 'C:\Documents' is not recognized as an internal or external command, operable program or batch file. if not exist "bin.v2\libs\thread\\" mkdir "bin.v2\libs\thread" ...failed MkDir1-quick-fix-for-windows bin.v2\libs\thread... This is fixed by set TMP=C:\temp I don't know if this merits a patch. Regards, Paul Paul Bilokon, Vice President Citigroup | FX - Options Trading | Quants 33 Canada Square | Canary Wharf | Floor 3 London, E14 5LB Phone: +44 20 798-62191 paul.bilokon(a)citi.com<mailto:paul.bilokon@citi.com>

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read_graphviz in 1.4x series
by Cyrus Hall 15 Jan '10

15 Jan '10

Ciao all- I've been happily using the boost graph library for a number of months now. Thanks to everyone who has contributed to this great piece of software. After upgrading from boost 1.38 to 1.40 in Ubuntu, read_graphviz now prints to std::cerr the graph it has just read. I downloaded to the source code to make sure this wasn't some cruft left over by the Ubuntu package managers, and it seems these print statements are in the main distribution package. This change seems to correspond with a complete rewrite of the scanning and parsing underlying read_graphviz, which seems to have happened between 1.39 and 1.40. 1.41 contains no changes from 1.40 in read_graphviz_new.cpp. The particular offending lines of code are in translate_results_to_graph in read_graphviz_new.cpp, starting at line 760. This is called directly from detail::graph::read_graphviz on line 796. I see no obvious way to toggle these print statements. But I also can't find other messages about this problem, so I'm guessing I'm just missing something. Is there someway I can get read of this debugging output? Cheers, Cyrus

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atomic read/write operations for integral types/pointers, just like tbb::atomic<T>.
by Michal 15 Jan '10

15 Jan '10

Hallo Group Members. Does boost::thread offer something that can act on integral types/pointers in atomic fashion, just like intel's tbb::atomic<T> does? best regards, Michal

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[asio] asio-client only connects to server when on same machine
by Grotjahn Clemens (CM-AI/PJ-CF22) 15 Jan '10

15 Jan '10

hello, i just found out what was wrong. it was an empty, uninitialised string that indeed made my client connect only to localhost.... now everything is fine! thanks

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Windows: Mixed .NET and native C++ with Boost
by Richwin, Dr. Matthias 15 Jan '10

15 Jan '10

Hi all, I try the following scenario: - a C++ library (my own code), unmanaged, makes use of boost (e.g. regex) - a C++ .NET application (windows forms based) planned as GUI (having used Borland C++ builder in the past, the windows forms approach looks quite appealing to me) - my C++ library header is included in the .Net form header file wrapped in a #pragma unmanaged/managed pair. I compiles and links well. For simple test purposes, I instantiate a class from my C++ library in the form constructor. Calling some unmanaged code from my library there creates a debug assertion: "Debug Assertion Failed! [...] Expression: _CrtIsValidHeapPointer(pUserData) " The call stack at that moment is as follows ("Application.exe" is my Windows Forms Application): > msvcr90d.dll!_msize_dbg(void * pUserData=0x8914c5e3, int nBlockUse=2) Zeile 1511 + 0x30 Bytes C++ msvcr90d.dll!_dllonexit_nolock(int (void)* func=0x89521903, void (void)* * * pbegin=0x0012f000, void (void)* * * pend=0x0012eff8) Zeile 295 + 0xd Bytes C msvcr90d.dll!__dllonexit(int (void)* func=0x89521903, void (void)* * * pbegin=0x0012f000, void (void)* * * pend=0x0012eff8) Zeile 273 + 0x11 Bytes C Application.exe!_onexit(int (void)* func=0x0046dce0) Zeile 110 + 0x1b Bytes C Application.exe!atexit(void (void)* func=0x0046dce0) Zeile 127 + 0x9 Bytes C Application.exe!boost::re_detail::`dynamic initializer for 'block_cache''() Zeile 191 + 0x2b Bytes C++ [Übergang von Verwaltet zu Systemeigen] Application.exe!_initterm(void** pfbegin = 0x0046E3A4, void pfend = ) Zeile 130 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::InitializeNative() Zeile 555 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::_Initialize() Zeile 678 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::Initialize() Zeile 876 C++ Application.exe!?.cctor@@$$FYMXXZ() Zeile 922 + 0x9 Bytes C++ [Unten angegebene Rahmen sind möglicherweise nicht korrekt und/oder fehlen, keine Symbole geladen für mscorwks.dll] ntdll.dll!7c91d39c() kernel32.dll!7c839736() ntdll.dll!7c91d39c() kernel32.dll!7c839736() kernel32.dll!7c809b32() kernel32.dll!7c80ae80() ntdll.dll!7c91dfac() kernel32.dll!7c8329b0() mscoree.dll!79007c24() kernel32.dll!7c817067() To me, it looks like the DLL initialization failed. Is anybody out there who might help me with this issue? I am completely new to this .Net thing... Best regards Matthias Leopold KOSTAL GmbH & Co. KG - Sitz Lüdenscheid, Registergericht Iserlohn HRA 2854, phG Kostal Verwaltungsgesellschaft mbH, Registergericht Iserlohn HRB 4061 - USt-Id-Nr./Vat No.: DE 125800885 Post- und Werksanschrift: An der Bellmerei 10, D-58513 Lüdenscheid * Telefon: +49 2351 16-0 * Telefax: +49 2351 16-2400 Bellmerei Geschäftsführung: Dipl.-Kfm. Helmut Kostal (Vorsitzender), Dipl.-Oec. Andreas Kostal, Dipl.-Wirtsch.-Ing. Hermann Eidel, Dipl.-Ing. Marwin Kinzl, Dr.-Ing. Ludger Laufenberg

3 2

[multiarray] problems passing views by reference
by Rhys Ulerich 14 Jan '10

14 Jan '10

Recently, Hanan Sadar asked about a multi_array fill implementation [1]. The standard std::fill_n(x.data(),x.num_elements(),v) answer only works when x is a boost::multi_array or boost::multi_array_ref but does not handle the general MultiArray concept. I decided to implement an arbitrary dimensional MultiArray fill capable of handling such views correctly. It's been absolutely miserable for reasons I don't understand but which resemble comments from James Amundson's recent thread [2]. Attached is my attempt with two exasperating lines marked by "Cannot use reference, why?". For a non-multi_array, non-multi_array_ref instance (i.e. a view) using a signature like template< class Array, class V > void operator()(Array x, const V &v); allows the code to compile and operate correctly. However, it incurs pass-by-value overhead. Using a signature like template< class Array, class V > void operator()(Array &x, const V &v); using pass-by-reference dies at compilation time. All of my attempts to use MultiArray's associated typedefs die, including hours of mucking with MultiArray::reference. What am I missing here? Why can't I pass a general MultiArray view type by reference? - Rhys [1] http://groups.google.com/group/boost-list/browse_thread/thread/829ebea7fef2… [2] http://groups.google.com/group/boost-list/browse_thread/thread/4531a7c35a58…

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Re: [Boost-users] [asio] asio-client only connects to server when on same machine
by Jason Felice 14 Jan '10

14 Jan '10

On Thu, Jan 14, 2010 at 10:25 AM, Nicola Michael Gutberlet <Nicola.Gutberlet(a)hhi.fraunhofer.de> wrote: > Just an idea popping up in my mind: firewall? More likely, the server binds to localhost (loopback).

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boost python macro hell
by Neal Becker 14 Jan '10

14 Jan '10

Probably OT, but I'm trying to generate modules programmatically. Each module with be generated using -DSIMCASE=n and will create a module called ldpc_n.so. I can't get this macro to work, this is my latest try: #define SIMCASE 10 #define NAME ldpc_ ## SIMCASE #define MODULE_START BOOST_PYTHON_MODULE (NAME) Later I have: MODULE_START { ... } Results in: In file included from ldpc_x.cc:12: ldpc.cc: In function 'void initldpc_SIMCASE()': ldpc.cc:100: error: 'init_module_ldpc_SIMCASE' was not declared in this scope Looks like 2 problems there: 1 is that 'SIMCASE' did not have it's #defined value substituted, second is that (as evidenced by the error) this interacted wierdly with the BOOST_PYTHON_MODULE macro.

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Re: [Boost-users] variadic template function using fusion vector
by noman javed 14 Jan '10

14 Jan '10

We want to hide from user the creation of the vector. The user just need to call the execute function like that execute(FOB,bar1,bar2,...,barn). Where the FOB is any function object followed by the original data. Regards Noman Javed

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[variant][graph] Conflict ?
by Maxime van Noppen 14 Jan '10

14 Jan '10

Hi, I recently upgraded the boost version used four our project from boost 1.39 to boost 1.41 and encountered a very strange compilation error. I managed to reduce the problem to this minimal test case : ----------var.cc--------------- #include <boost/variant.hpp> #include <boost/graph/breadth_first_search.hpp> int main() { boost::variant<char, bool> v; boost::get<int>(v); } ---------------------------- This doesn't compile on Linux 64bits with gcc 4.4.2 20091208 and produces this error message : ---------------------------- > In file included from /usr/include/boost/graph/graph_concepts.hpp:17, > from /usr/include/boost/graph/breadth_first_search.hpp:21, > from var.cc:2: > /usr/include/boost/property_map/property_map.hpp: In instantiation of ‘boost::property_traits<int>’: > /usr/include/boost/graph/two_bit_color_map.hpp:46: instantiated from ‘boost::two_bit_color_map<int>’ > var.cc:8: instantiated from here > /usr/include/boost/property_map/property_map.hpp:31: error: ‘int’ is not a class, struct, or union type > /usr/include/boost/property_map/property_map.hpp:32: error: ‘int’ is not a class, struct, or union type > /usr/include/boost/property_map/property_map.hpp:33: error: ‘int’ is not a class, struct, or union type > /usr/include/boost/property_map/property_map.hpp:34: error: ‘int’ is not a class, struct, or union type ---------------------------- Could there be a conflict between boost.variant and boost.graph or did I miss something ? Thanks, -- Maxime

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[asio] asio-client only connects to server when on same machine
by Grotjahn Clemens (CM-AI/PJ-CF22) 14 Jan '10

14 Jan '10

hi everybody, i have an issue with my asio-client that wants to connect to an asio-server. when i set my server on a machine in our network to listening on a port (>1024) and then try to connect with my client via this port, i get a "Connection refused"-exception. this happens every time the server and client are located on different machines. if i try this on the same machine it works fine! also, if i try to connect via telnet from another machine it works! here's the client-setup-code snippet, maybe i missed a special config there?: tcp::resolver resolver( _io ); //_io is class-member tcp::resolver::query query( server, port ); //server and port are char-buffers tcp::resolver::iterator iter = resolver.resolve( query ); _socket = new tcp::socket( _io ); tcp::resolver::iterator end; // End marker. boost::system::error_code error = error::host_not_found; while (error && iter != end) { _socket->close(); _socket->connect(*iter++, error); } if (error) throw boost::system::system_error( error ); } catch( std::exception& e ) { cout << "NetClient Konstruktor: " << e.what() << endl; }

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