February 2009 - Boost-users - lists.preview.boost.org

[serialization][build][spirit][repost] Problems with spirit when building 1.38 serialization on windows with Intel C++ 11.0
by Jesse Perla 21 Feb '09

21 Feb '09

Sorry for the repost, but it looks like the formatting on my previous post was messed up, and I wouldn't blame people for not reading it I am on windows using the latest version of the intel compiler (set in my user-config.jam). I was able to do a debug build of everything using: bjam link=static debug stage But when I tried to do a release build, it is popping up a spirit error for serialization(fails with or without mpi). Any ideas on a workaround or if this is a legit bug? The main error in the build output is: C:\apps\boost\boost_1_38_0\boost\spirit\home\classic\utility\impl\chset\range_run.ipp(142) (col. 21): internal error: 0_1504 compilation aborted for libs\serialization\src\xml_grammar.cpp Full output: bjam --with-mpi link=static release stage ...patience... ...found 1080 targets... ...updating 4 targets... compile-c-c++ bin.v2\libs\serialization\build\intel-win\release\link-static\thre ading-multi\xml_grammar.obj icl: command line remark #10010: option '/Op' is deprecated and will be removed in a future release. See '/help deprecated' xml_grammar.cpp Warning: This header is deprecated. Please use: boost/spirit/include/classic_rul e.hpp Warning: This header is deprecated. Please use: boost/spirit/include/classic_ope rators.hpp Warning: This header is deprecated. Please use: boost/spirit/include/classic_act ions.hpp Warning: This header is deprecated. Please use: boost/spirit/include/classic_num erics.hpp C:\apps\boost\boost_1_38_0\boost\spirit\home\classic\utility\impl\chset\range_ru n.ipp(142) (col. 21): internal error: 0_1504 compilation aborted for libs\serialization\src\xml_grammar.cpp (code 4) call "C:\apps\Intel\Compiler\11.0\066\cpp\bin\ia32\iclvars_ia32.bat" > nul icl @"bin.v2\libs\serialization\build\intel-win\release\link-static\threading-mu lti\xml_grammar.obj.rsp" ...failed compile-c-c++ bin.v2\libs\serialization\build\intel-win\release\link-s tatic\threading-multi\xml_grammar.obj... ...skipped <pbin.v2\libs\serialization\build\intel-win\release\link-static\threa ding-multi>libboost_serialization-iw-mt-1_38.lib for lack of <pbin.v2\libs\seria lization\build\intel-win\release\link-static\threading-multi>xml_grammar.obj... ...skipped <pstage\lib>libboost_serialization-iw-mt-1_38.lib for lack of <pbin.v 2\libs\serialization\build\intel-win\release\link-static\threading-multi>libboos t_serialization-iw-mt-1_38.lib... ...skipped <pstage\lib>libboost_serialization-iw-mt.lib for lack of <pstage\lib> libboost_serialization-iw-mt-1_38.lib... ...failed updating 1 target... ...skipped 3 targets...

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[shared_ptr] Is reference counting thread safe in boost 1.38
by dhruva 21 Feb '09

21 Feb '09

Hello, I am trying to replace a home grown shared pointer which uses expensive lock (mutex) to make the increment and decrement thread safe. I went through the boost code and see it uses atomic operations. I am not able to figure out if the following case is handled: 1. Thread 1 has a shared_ptr and hence the reference is 1 2. Thread 1 is in the process of decrementing the reference and thread 2 is in the process of incrementing the the reference 3. If thread 1 succeeds in decrementing, the reference will become 0 and hence 'destroy' will get called. 4. Can thread 2 increment after when thread 1 is in a call to destroy? The reference count variable is itself protected but is the call to destroy and reference count variable synchronized? -dhruva Add more friends to your messenger and enjoy! Go to http://messenger.yahoo.com/invite/

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ambigous bitshift operator for ubig64_t ?
by Ákos Maróy 21 Feb '09

21 Feb '09

Hi, I'm trying to compile the following code: #include <boost/spirit/home/support/detail/integer/endian.hpp> boost::integer::ubig64_t big_endian_value; big_endian_value >> 1; but I get: error: ambiguous overload for 'operator>>' in 'big_endian_value >> 1' note: candidates are: operator>>(long long unsigned int, int) <built-in> ../../usr/include/boost-1_38/boost/spirit/home/support/detail/integer/cover_operators.hpp:53: note: long long unsigned int boost::integer::operator>>(const boost::integer::endian<big, long long unsigned int, 64u, unaligned>&, long long unsigned int) what am I doing wrong? (BTW, the same works with the >>= operator) I'm doing this on Linux, gcc 4.1.2 Akos

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Is it OK to post a brief announcement about reports and statistics for Boost Unit Test Framework?
by Slava Imeshev 21 Feb '09

21 Feb '09

Hi all, I am wondering if this is OK to post here a brief announcement about availability of formatted reports and statistics charts for Boost Unit Test Framework that we added to our product? Regards, Slava Imeshev

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boost::exception - leaking error_info
by Bruce Laing 21 Feb '09

21 Feb '09

This program seems to be leaking boost::exception::error_info objects. Is there something missing here? - Bruce typedef boost::error_info< struct tag_my_error, std::string > some_error_info; struct an_exception : public boost::exception, public std::exception {}; void throw_func() { BOOST_THROW_EXCEPTION ( an_exception() // no leak if next line is commented out. << some_error_info( std::string( "error message" ) ) ); } . . . BOOST_AUTO_TEST_CASE( test_exceptions ) { try { throw_func() } catch( an_exception& ) { } }

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boost_regex link problems
by Colin Hercus 21 Feb '09

21 Feb '09

Hi, I'm trying to use Boost regex for the first time and I'm having trouble getting libboost_regex to link. The libraries are in /usr/lib64 and I try adding -lboost_regex to CC command and also explicitly adding /usr/lib64/libboost_regex.so or .a but I keep getting the same linker errors whether the library is specified or not. I'm using Sun Studio 12. What am I doing wrong? Colin Running "/opt/sun/sunstudio12/bin/dmake -f Makefile CONF=Release" in /home/sparks/NovoCraft/ssp/novoalign dmake: defaulting to parallel mode. See the man page dmake(1) for more information on setting up the .dmakerc file. linuxpc --> 1 job /opt/sun/sunstudio12/bin/dmake -f nbproject/Makefile-Release.mk SUBPROJECTS= .build-conf linuxpc --> 1 job mkdir -p ../../sunbin CC -m64 -features=zla -staticlib=Cstd -staticlib=Crun --print-map >../../maps/novoalign.map -o ../../sunbin/novoalign build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/wmsearch.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/ksgroups.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/nawm.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/queryformat.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/queryfolder.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/keygen.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/ksindex.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/iubcodes.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/needle.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/TThread.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/shortnw.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/fragdist.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/novoparam.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/queryreader.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/posteriorP.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/qualconvert.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/TTimer.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/TThreadPool.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/rptsyncio.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/findamate.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/license.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/qryopt.o build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/novopaired_main.o /usr/lib64/libboost_regex.a -lpthread -lz /usr/lib64/libcrypto.a CC: Warning: Option --print-map passed to ld, if ld is invoked, ignored otherwise (/home/sparks/NovoCraft/ssp/novoalign)build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/wmsearch.o: . . .:(/home/sparks/NovoCraft/ssp/novoalign)build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/novopaired_main.o (/home/sparks/NovoCraft/ssp/novoalign)/usr/lib64/libboost_regex.a: :(/home/sparks/NovoCraft/ssp/novoalign)/usr/lib64/libboost_regex.a (/home/sparks/NovoCraft/ssp/novoalign)/usr/lib64/libcrypto.a: :(/home/sparks/NovoCraft/ssp/novoalign)/usr/lib64/libcrypto.a build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/ksgroups.o: In function `void boost::re_detail::basic_regex_parser<char,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::parse(const char*,const char*,unsigned)': ksgroups.cc:(.text%void boost::re_detail::basic_regex_parser<char,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::parse(const char*,const char*,unsigned)[void boost::re_detail::basic_regex_parser<char,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::parse(const char*,const char*,unsigned)]+0x28e): undefined reference to `void boost::re_detail::raw_storage::resize(unsigned long)' ksgroups.cc:(.text%void boost::re_detail::basic_regex_parser<char,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::parse(const char*,const char*,unsigned)[void boost::re_detail::basic_regex_parser<char,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::parse(const char*,const char*,unsigned)]+0x2f8): undefined reference to `void boost::re_detail::raw_storage::resize(unsigned long)' build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/ksgroups.o: In function `bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()': ksgroups.cc:(.text%bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()[bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()]+0x17): undefined reference to `void*boost::re_detail::get_mem_block()' ksgroups.cc:(.text%bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()[bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()]+0x128): undefined reference to `void boost::re_detail::verify_options(unsigned,boost::regex_constants::_match_flags)' ksgroups.cc:(.text%bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()[bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()]+0x186): undefined reference to `void boost::re_detail::put_mem_block(void*)' ksgroups.cc:(.text%bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()[bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()]+0x1a3): undefined reference to `void boost::re_detail::put_mem_block(void*)' ksgroups.cc:(.text%bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()[bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()]+0x1ff): undefined reference to `void boost::re_detail::put_mem_block(void*)' ksgroups.cc:(.text%bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()[bool boost::re_detail::perl_matcher<const char*,std::allocator<boost::sub_match<const char*> >,boost::regex_traits<char,boost::cpp_regex_traits<char> > >::match()]+0x230): undefined reference to `void boost::re_detail::put_mem_block(void*)' build/Release/Sun12-Linux-x86/_ext/home/sparks/NovoCraft/ssp/novoalign/../../src/ksgroups.o: In function `boost::shared_ptr<boost::re_detail::cpp_regex_traits_implementation<char> >boost::object_cache<boost::re_detail::cpp_regex_traits_base<char>,boost::re_detail::cpp_regex_traits_implementation<char> >::do_get(const boost::re_detail::cpp_regex_traits_base<char>&,unsigned long)': ksgroups.cc:(.text%boost::shared_ptr<boost::re_detail::cpp_regex_traits_implementation<char> >boost::object_cache<boost::re_detail::cpp_regex_traits_base<char>,boost::re_detail::cpp_regex_traits_implementation<char> >::do_get(const boost::re_detail::cpp_regex_traits_base<char>&,unsigned long)[boost::shared_ptr<boost::re_detail::cpp_regex_traits_implementation<char>

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[Python] can't import boost modules in an embedded interpreter
by George Slavov 21 Feb '09

21 Feb '09

I solved my problem. I had to add the current directory (where the executable is) to sys.path at the beginning of the program before python files are picked up as modules in the embedded interpreter. George

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Conditional function definition with boost::enable_if
by Matthias Vallentin 20 Feb '09

20 Feb '09

Hi folks, I would like to define a function in a class only if a child defines it. In the below example, I would like the function f() to exist only in an object bar if it defines a function i(). So far, my approach with boost::enable_if failed because bar is not a complete type during examination. T is clearly incomplete at the time when b is defined. What would be the correct approach to solve this problem? #include <boost/type_traits/is_function.hpp> #include <boost/utility/enable_if.hpp> template <typename T> struct foo { typename boost::enable_if< typename boost::is_function<typename T::i>::type, void >::type f() { } }; struct bar : foo<bar> { void i() { } }; int main() { bar b; b.f(); // should only compile since bar defines i() return 0; } enable_if.cc: In instantiation of ‘foo<bar>’: enable_if.cc:16: instantiated from here enable_if.cc:10: error: invalid use of undefined type ‘struct bar’ enable_if.cc:16: error: forward declaration of ‘struct bar’ enable_if.cc: In function ‘int main()’: enable_if.cc:25: error: ‘struct bar’ has no member named ‘f’ Matthias -- Matthias Vallentin vallentin(a)icsi.berkeley.edu http://matthias.vallentin.cc

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Thread synchronization
by John D 20 Feb '09

20 Feb '09

Hello I have a situation in which hundreds of threads potentially run side by side. They exchange minimal data and are fully in sync by way of a scoped mutex. Now I have a situation in which a single seperate thread runs alongside all the worker threads. This thread is responsible for keeping data sets used by the workers, current. Given the complexity and total alternation of the data onthis interval, my question is; Does boost threads allow my single thread to halt all other activity ,of all the other threads,from a single thread itself. This is what I need to accomplish and any guidance to this matter is a huge help. John

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Formal Review: Boost.RangeEx
by Thorsten Ottosen 20 Feb '09

20 Feb '09

Dear Developers and Users, It's my pleasure to announce that the review of Neil Groves' RangeEx library starts today and lasts until March 3, 2009. What is it? +++++++++++ The library provide two very useful extensions to the range library 1. Range-based algorithms. E.g. boost::sort( rng ); which is a convenient wrapper of instead of std::sort( boost::begin(rng), boost::end(rng) ); But the new interface also allows for more expressive code because (on the fly) composition of algorithms suddenly is possible. 2. Range adaptors. E.g. std::vector<int> vec = ...; boost::copy( vec | boost::adaptors::reversed, std::ostream_iterator<int>( std::cout ) ); where the expression "vec | boost::adaptors::reversed" wraps the iterators of the range on the left in reverse iterators. The library provides a wide range (no pun intended) of Range adaptors, and they are a powerful way to create ranges on the fly and pass them to algorithms. Getting the library +++++++++++++++++++ The library may be downloaded from http://www.cs.aau.dk/~nesotto/boost/range_ex.zip or from the Boost vault under "Algorithms". The docs may be browsed online here http://www.cs.aau.dk/~nesotto/boost/libs/range/ Please note that the documentation is integrated with the current Range ilbrary. Therefore the relevant sections for the review is http://www.cs.aau.dk/~nesotto/boost/libs/range/doc/adaptors.html and http://www.cs.aau.dk/~nesotto/boost/libs/range/doc/algorithms.html The code may be browsed here: http://www.cs.aau.dk/~nesotto/boost/boost/range/ Notice the library is header only (exception: the adaptor tokenized() depends on Boost.Regex). Writing a review ++++++++++++++++ If you feel this is an interesting library, then please submit your review to the developer list (preferably), or to the review manager. Here are some questions you might want to answer in your review: - What is your evaluation of the design? - What is your evaluation of the implementation? - What is your evaluation of the documentation? - What is your evaluation of the potential usefulness of the library? - Did you try to use the library? With what compiler? Did you have any problems? - How much effort did you put into your evaluation? A glance? A quick - reading? In-depth study? - Are you knowledgeable about the problem domain? And finally, every review should answer this question: - Do you think the library should be accepted as a Boost library? Be sure to say this explicitly so that your other comments don't obscure your overall opinion. Special considerations ++++++++++++++++++++++ Various RangeEx like libraries have been implemented in the past. You might want to compare with those libraries when you form your oppinion: 1. John Torjo's range lib http://rangelib.synesis.com.au/libs/boost-rangelib-20040913.zip http://torjo.com/rangelib/index.html 2. Adobe's ASL libraries include range-based algorithms: http://stlab.adobe.com/group__algorithm.html I'm looking forward to your review. best regards Thorsten, Review Manager

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