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

Boost.Thread test results in Boost.Tokenizer
by Andrey Semashev 22 Aug '10

22 Aug '10

Hi, I'm looking at Boost.Tokenizer trunk test results. For some reason, Sandia-intel-10.1 column contains test "examples" which result refers to some Boost.Thread test: <http://www.boost.org/development/tests/trunk/developer/output/Sandia-intel-…> Does anyone know how that happened and how to fix it?

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[thread] throw during new boost::thread() ??
by David M. Cotter 22 Aug '10

22 Aug '10

if i allocate more than 5501 threads, subsequent threads fail to run. these threads live a very short time and only maybe ten max are alive at any one time. for example if i'm iterating over every song in my music library and doing some quick process, after about 5500 songs, the program stops working. i'm exiting the threads normally, so housekeeping is performed (tho it would be performed anyway, right?) i checked and when it crashes there are indeed only about five threads running. so SOME resource is not getting released, it's not my resource, it's something to do with boost::threads. as a test, i created one thread, then on that thread i loop and create 30,000 threads. the only thing the thread does is increment a counter and exit, so no more than a couple threads are live at once. why is it throwing an exception?? call stack: #0 0x001cebaf in boost::detail::sp_counted_impl_p<boost::detail::thread_data<CFork_Preemptive> >::sp_counted_impl_p at sp_counted_impl.hpp:67 #1 0x001cec0f in boost::detail::shared_count::shared_count<boost::detail::thread_data<CFork_Preemptive> > at shared_count.hpp:87 #2 0x001d008a in boost::shared_ptr<boost::detail::thread_data_base>::shared_ptr<boost::detail::thread_data<CFork_Preemptive> > at shared_ptr.hpp:187 #3 0x001d0110 in boost::thread::make_thread_info<CFork_Preemptive> at thread.hpp:136 #4 0x001d0149 in boost::thread::thread<CFork_Preemptive> at thread.hpp:186 #5 0x001c6e92 in CThreads::Fork at CThreads.cpp:765 template<class X> class sp_counted_impl_p: public sp_counted_base { private: X * px_; sp_counted_impl_p( sp_counted_impl_p const & ); sp_counted_impl_p & operator= ( sp_counted_impl_p const & ); typedef sp_counted_impl_p<X> this_type; public: explicit sp_counted_impl_p( X * px ): px_( px ) { <<--- throw happens right here #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) boost::sp_scalar_constructor_hook( px, sizeof(X), this ); #endif } virtual void dispose() // nothrow { #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) boost::sp_scalar_destructor_hook( px_, sizeof(X), this ); #endif boost::checked_delete( px_ ); }

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boost-owner@lists.boost.org
by Edward Diener 21 Aug '10

21 Aug '10

I would like write access to the Boost sandbox in order to post some code there for possible future inclusion in Boost. Edward Diener

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Re: [boost] Book "The Boost C++ Libraries" now in Chinese
by Eric Niebler 21 Aug '10

21 Aug '10

On 8/19/2010 4:57 PM, Boris Schaeling wrote: > I'm pleased to announce that the book "The Boost C++ Libraries" is now > available in Chinese: <http://zh.highscore.de/cpp/boost/> > > A big thank you goes to Albert Lai and his team of translators! They > managed to translate the entire book in only four months and taught me > something about the Chinese language. :-) This is extremely cool. Congrats. Now if only there were some content about metaprogramming... ;-) -- Eric Niebler BoostPro Computing http://www.boostpro.com

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[fusion] Any chance we can incorporate more folds?
by David Sankel 21 Aug '10

21 Aug '10

I've implemented, in particular, foldr1: template< typename Sequence, typename State, typename F > typename result_of::foldr1<Sequence, F>::type foldr1( Sequence& seq, F const& f); Semantics: Equivalent to f(....f(f(e1,e2),e3)...) where e1 ...eN are the elements of seq. It is very useful for fusion sequences of possibly distinct types that have identical concepts which can be merged in some way (like generators). I very much like the folds that are included in Haskell's prelude, namely foldl, foldl1, foldr (somewhat like boost's fold), and foldr1[1]. David [1] http://www.haskell.org/onlinereport/haskell2010/haskellch20.html#x28-231000… -- David Sankel Sankel Software www.sankelsoftware.com 585 617 4748 (Office)

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McAfee warning
by Johan Råde 20 Aug '10

20 Aug '10

When downloading Boost, McAfee warns that "In our tests, this download contained programs some people would consider adware, spyware or potentially unwanted programs." See attached screen shot. --Johan

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[tokenizer] 1.44 VS compiler warnings
by Okko Willeboordse 19 Aug '10

19 Aug '10

Hello, Running Boost 1.44, VS2008 SP1, W SDK 6.1, W Server 2003 When I compile; #include <boost/date_time.hpp> I get the following compiler warnings; ... c:\program files\microsoft visual studio 9.0\vc\include\iosfwd(589) : warning C4996: 'std::_Traits_helper::copy_s': ... ... c:\program files\microsoft visual studio 9.0\vc\include\iosfwd(616) : warning C4996: 'std::_Traits_helper::move_s': ... ... c:\program files\microsoft visual studio 9.0\vc\include\iosfwd(607) : warning C4996: 'std::char_traits<char>::copy': ... ... etc.. Above is caused by resent changes to tokenizer, more specific token_functions.hpp for ticket 1755, starting with revision 62706. When I revert token_functions.hpp to version of 1.43 warnings go away. When I compile (copied from boost/date_time/date_parsing.hpp); #include <boost/tokenizer.hpp> typedef std::basic_string<char>::traits_type traits_type; typedef boost::char_separator<char, traits_type> char_separator_type; void foo() { const char sep_char[] = {',','-','.',' ','/','\0'}; char_separator_type sep(sep_char); } I get identical warnings; Kind regards, Okko Willeboordse

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[mpl] unexpected behaviour of mpl::add
by Thomas Heller 19 Aug '10

19 Aug '10

Hi, I just noticed something i find very odd. Considering this example: mpl::add<mpl::int_<1>, mpl::int_<1>::type So I was expecting that this metafunction returns a mpl::int<2> Unfortunately, this was not the case, instead a mpl::integral_c<int, 2> was returned. Is this a bug or a feature? Regards, Thomas

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[serializatrion] problems with 1.44
by Dmitry Vinogradov 19 Aug '10

19 Aug '10

I think something was broken in Boost 1.44. This code fails to compile with 1.44, but compiles with 1.43 (MSVC 10.0): #include <boost/variant.hpp> #include <boost/serialization/variant.hpp> #include <boost/archive/binary_iarchive.hpp> #include <sstream> int main() { std::stringstream s; boost::archive::binary_iarchive ar(s); boost::variant<int, char> x; ar >> x; return 0; } e:\libraries\boost\boost\serialization\variant.hpp(139): error C3861: 'BOOST_SERIALIZATION_NVP': identifier not found Am I missing something or is it a bug?

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Re: [boost] McAfee warning
by Wolfgang Forstmeier 19 Aug '10

19 Aug '10

Where do you download from? My download from http://www.sourceforge.net seems to be ok. Checked that with "Microsoft Security Essentitals". -- > On Wed, Aug 18, 2010 at 6:17 PM, Johan Råde <rade(a)maths.lth.se> wrote: >> When downloading Boost, McAfee warns that >> "In our tests, this download contained programs some people would >> consider adware, spyware or potentially unwanted programs." >> See attached screen shot. >> >> --Johan >> >> _______________________________________________ >> Unsubscribe & other changes: >> http://lists.boost.org/mailman/listinfo.cgi/boost >> > > > > -- > Mit freundlichen Grüßen, > With best regards, > > Wolfgang Forstmeier > > Homines sumus nun dei (Petronius) > ------------------------------------------- > mailto:wolfgang.forstmeier@gmail.com > -- Mit freundlichen Grüßen, With best regards, Wolfgang Forstmeier Homines sumus nun dei (Petronius) ------------------------------------------- mailto:wolfgang.forstmeier@gmail.com

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