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[intro] Preview: Introspection library
by Stefan Strasser 02 Jul '10

02 Jul '10

Hi, I'd be interested in comments on an introspection library I've been developing. there has been no "Is there any interest..."-e-mail yet, as it was started out of necessity in "namespace detail" of another library, so you're also welcome to express interest/disinterest in a library like this, without any specific comments. source code: https://svn.boost.org/trac/boost/browser/sandbox/intro/boost/intro/ the library defines a concept that exposes the members of a class, for introspection algorithms to work with. e.g. the "print" algorithm applied to a simple object implementing the concept yields the following results: intro::print(a,std::cout); ---- { A_base = { int member_of_base = 789; }; int a = 123; float b = 456.7; vector<int,class std::allocator<int> > vec = {2, 4, 6, 8, 10}; } --- other algorithms that are currently implemented: - apply_members[_binary]: apply a user-supplied functor to each member - apply_recursive: follow pointers, references, STL container elements, etc. - serialize: serialization of an object tree of 1M objects: 80 ms. Boost.Serialization: 330 ms. serialization of an object graph of 1M objects: 410 ms. Boost.Serialization: 2700 ms. - move: move-construct an object - reset_shared planned or not yet in the sandbox are deserialize, print_recursive, copy_deep, copy_shallow, equal_deep, equal_shallow. an implementation of the concept looks like this: template<class Mapping> friend void introspect(Mapping mapping,type<A>){ mapping (base_class<A_base>() ) (member<A,int ,&A::m_a>() ) (member<A,float ,&A::m_b>() ) (member<A,std::vector<int>,&A::m_vec>()) (); } members can also be associated with tags or data, and can be assigned semantics (e.g. polymorphic, shared/unique for pointers), but I won't go into too much detail for now. Best, Stefan

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[RFC] string inserter/extractor "q u o t i n g"
by Beman Dawes 01 Jul '10

01 Jul '10

This is a request for comments on a delimited string inserter/extractor facility for Boost. The initial motivation is a need for Boost.Filesystem class path inserters and extractors to handle paths with embedded spaces. The problems stems from standard library stream I/O not round-tripping strings with embedded spaces, so a general solution might be of interest. It is a bit surprising that Boost doesn't seem to already have such a utility. The general solution presented here follows very common practice as to the format: strings are enclosed in delimiters on output and the delimiters (if present) are stripped on input. In the external format, an escape character precedes itself or the delimiter character should either be present in the string. The default delimiter character is the double-quote (") and the default escape character is the backslash (\). These defaults can be overridden. Example: const std::string expected("foo\\bar, \" *"); std::cout << delimit(expected); std::string actual; std::stringstream ss; ss << delimit(expected); ss >> undelimit(actual); assert(expected == actual); The output to cout is "foo\\bar, \" *" A prototype is available at http://svn.boost.org/svn/boost/branches/filesystem3/boost/delimit_string.hpp. It is a header only implementation. Do you think this component, with suitable documentation, tests, etc., should become a part of Boost? If so, What library should it be part of? Seems too small to be a library all of its own. Where should the header live? What namespace should it be in? Are delimit() and undelimit() suitable names for the functions? Any other comments? Thanks, --Beman

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Regression tests machines
by Joel Falcou 01 Jul '10

01 Jul '10

I am managing some spare machine with reasonable performances and compiler selection that are basically underused at the moment (including various i64, AMD and PowerPC server blade) with both gcc and icc. I guessed they could be used to run the boost regression test on a dialy or weekly basis. I found out about the : http://www.boost.org/development/running_regression_tests.html page but I wanted to know if there is any speficic need in term of paltofrm/compiler coverage or if I can just run whatever and push the regression result up ?

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[BGL] Does BGL use Quickbook?
by Daniel Trebbien 01 Jul '10

01 Jul '10

Does BGL use Quickbook to generate the HTML pages or are the HTML pages hand-coded?

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[Boost.Test] error when running
by FIXED-TERM Lay Seak Meng (CR/RTC1.2-NA) 01 Jul '10

01 Jul '10

Hi, I am new to Boost Test framework. I wrote a small test case and put it as a post build event. #include "stdafx.h" BOOST_AUTO_TEST_CASE(Test1) { BOOST_REQUIRE(false); } I got this error after linking. 1>Running Unit Tests 1>'c:\Documents' is not recognized as an internal or external command, 1>operable program or batch file. Anyone knows how to fix this? Thanks

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Re: [boost] Status of (boost) lockfree?
by mikexu 30 Jun '10

30 Jun '10

Hi, I ran into exactly the same issue with Microsoft Visual Studio 2010. Here is the error I got: u:\development\thirdparty\boost_1_43_0\boost\atomic.hpp(167): warning C4800: 'intptr_t' : forcing value to bool 'true' or 'false' (performance warning) 1>u:\development\thirdparty\boost_1_43_0\boost\atomic\detail\integral-casts.hpp(228): error C2621: member 'boost::detail::atomic::platform_atomic<T>::e' of union 'boost::detail::atomic::platform_atomic<T>::<unnamed-tag>' has copy constructor 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\atomic\detail\base.hpp(63) : see reference to class template instantiation 'boost::detail::atomic::platform_atomic<T>' being compiled 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\atomic.hpp(20) : see reference to class template instantiation 'boost::detail::atomic::internal_atomic<T>' being compiled 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\lockfree\fifo.hpp(202) : see reference to class template instantiation 'boost::atomic<T>' being compiled 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\lockfree\fifo.hpp(223) : see reference to class template instantiation 'boost::lockfree::detail::fifo<T,freelist_t,Alloc>' being compiled 1> with 1> [ 1> T=int, 1> freelist_t=boost::lockfree::caching_freelist_t, 1> Alloc=std::allocator<int> 1> ] 1> u:\development\thirdparty\concurrencytest\fifotest\fifo.cpp(15) : see reference to class template instantiation 'boost::lockfree::fifo<T>' being compiled 1> with 1> [ 1> T=int 1> ] 1>u:\development\thirdparty\boost_1_43_0\boost\atomic\detail\integral-casts.hpp(228): error C2621: member 'boost::detail::atomic::platform_atomic<T>::e' of union 'boost::detail::atomic::platform_atomic<T>::<unnamed-tag>' has copy constructor 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::caching_freelist<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node,std::allocator<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node>>::freelist_node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\atomic\detail\base.hpp(63) : see reference to class template instantiation 'boost::detail::atomic::platform_atomic<T>' being compiled 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::caching_freelist<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node,std::allocator<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node>>::freelist_node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\atomic.hpp(20) : see reference to class template instantiation 'boost::detail::atomic::internal_atomic<T>' being compiled 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::caching_freelist<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node,std::allocator<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node>>::freelist_node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\lockfree\detail\freelist.hpp(131) : see reference to class template instantiation 'boost::atomic<T>' being compiled 1> with 1> [ 1> T=boost::lockfree::tagged_ptr<boost::lockfree::caching_freelist<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node,std::allocator<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node>>::freelist_node> 1> ] 1> u:\development\thirdparty\boost_1_43_0\boost\lockfree\fifo.hpp(208) : see reference to class template instantiation 'boost::lockfree::caching_freelist<T,Alloc>' being compiled 1> with 1> [ 1> T=boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node, 1> Alloc=std::allocator<boost::lockfree::detail::fifo<int,boost::lockfree::caching_freelist_t,std::allocator<int>>::node> 1> ] 1> 1>Build FAILED. 1> 1>Time Elapsed 00:00:10.46 ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Have you found a solution yet? -Mike Andrey Zhdanov wrote: > > > > >> i don't have access to other compilers, so i need to rely on other >> people's >> report >> > > > Hello Tim, > > MSVC 9.0 complains about lockfree/fifo - does not like tagged_ptr to have > copy constructor: > > > > 1>e:\work\201003\10.lock_free\boost-lf\boost\atomic\detail\integral-casts.hpp(228) > : error C2621: member 'boost::detail::atomic::platform_atomic<T>::e' of > union 'boost::detail::atomic::platform_atomic<T>::<unnamed-tag>' has copy > constructor > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > 1> e:\work\201003\10.lock_free\boost-lf\boost\atomic\detail\base.hpp(63) : > see reference to class template instantiation > 'boost::detail::atomic::platform_atomic<T>' being compiled > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > 1> e:\work\201003\10.lock_free\boost-lf\boost\atomic.hpp(20) : see > reference to class template instantiation > 'boost::detail::atomic::internal_atomic<T>' being compiled > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > 1> e:\work\201003\10.lock_free\boost-lf\boost\lockfree\fifo.hpp(202) : see > reference to class template instantiation 'boost::atomic<T>' being > compiled > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > > > Though, after commening copy contructor, there is another error: > > > > 1>e:\work\201003\10.lock_free\boost-lf\boost\atomic\detail\integral-casts.hpp(228) > : error C2620: member 'boost::detail::atomic::platform_atomic<T>::e' of > union 'boost::detail::atomic::platform_atomic<T>::<unnamed-tag>' has > user-defined constructor or non-trivial default constructor > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > 1> e:\work\201003\10.lock_free\boost-lf\boost\atomic\detail\base.hpp(63) : > see reference to class template instantiation > 'boost::detail::atomic::platform_atomic<T>' being compiled > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > 1> e:\work\201003\10.lock_free\boost-lf\boost\atomic.hpp(20) : see > reference to class template instantiation > 'boost::detail::atomic::internal_atomic<T>' being compiled > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > 1> e:\work\201003\10.lock_free\boost-lf\boost\lockfree\fifo.hpp(202) : see > reference to class template instantiation 'boost::atomic<T>' being > compiled > > 1> with > > 1> [ > > 1> > T=boost::lockfree::tagged_ptr<boost::lockfree::detail::fifo<EU_DATA,boost::lockfree::caching_freelist_t,std::allocator<EU_DATA>>::node> > > 1> ] > > > > Thanks, > > Andrey > > > > _________________________________________________________________ > Hotmail: Free, trusted and rich email service. > http://clk.atdmt.com/GBL/go/201469228/direct/01/ > _______________________________________________ > Unsubscribe & other changes: > http://lists.boost.org/mailman/listinfo.cgi/boost > > -- View this message in context: http://old.nabble.com/Status-of-%28boost%29-lockfree--tp27733138p29029331.h… Sent from the Boost - Dev mailing list archive at Nabble.com.

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[xint] Sixth release, preliminary review again please
by Chad Nelson 29 Jun '10

29 Jun '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The next iteration of the Extended Integer library (a arbitrary-length integer math library) is now available in the sandbox (at <https://svn.boost.org/svn/boost/sandbox/xint>) and the Vault (at <http://www.boostpro.com/vault/index.php?action=downloadfile&filename=xint.z…>). I think it's nearly ready for an official review. :-) The changes between this release and the last one are: * Refined the use of Boost.Parameter. Now only fixedlength takes a parameter; the other options are non-parameter types, which simplifies both their use and their implementation. * Minor redesign, taking advantage of proper policy-based design. nan() and operator~() are now only available on nothrow and fixedlength types, respectively, and is_nan() gets different definitions in the standard and nothrow types. * Added unsigned support, by request, with a variety of options for what to do when a calculation results in a negative number. * Added the difference function. * Added support for wide-character strings, by request. * Added the safe-bool idiom, by request. This release, like the last ones, includes a slightly older version of Ion Gaztañaga's preliminary Move library too. I haven't tested it with the current version, but it should work with that as well. The Move library is not used by default, and makes only a slight difference to the speed when thread-safety is enabled. Still on my immediate to-do list: * Add support for GCC's -fno-exceptions option. * Add more examples. - -- Chad Nelson Oak Circle Software, Inc. * * * -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkwcD6UACgkQp9x9jeZ9/wSfTwCfTMiucMP3uho9YmGJCyzMPe+s MhwAoMUe9tnFTHpQVDkCIfWiwpCjcuZi =QS39 -----END PGP SIGNATURE-----

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Dynamic_bitset and access to underlying storage
by Iain K. Hanson 29 Jun '10

29 Jun '10

Hi, I need to use a bitset with contiguous storage so that I can pass it to a system call. Although I can't see it in the documentation, I know from reading the code, that dynamic bitset is implemented in terms of std::vector. Also, whilst I don't need the run time resizing that dynamic bitset provides, I do need to be able to use up to at least 64K bits, So, is there any chance of an additional member function+ that returns a pointer to the zero'eth element of the underlying vector? regards /ikh -- "I disapprove of what you say, but I will defend to the death your right to say it." Evelyn Beatrice Hall who wrote under the pseudonym S.G. Tallentyre in a biography of Voltaire. #include <std_disclaimer>

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Re: [boost] [intro] Preview: Introspection library
by Andrzej Krzemienski 29 Jun '10

29 Jun '10

> I'd be interested in comments on an introspection library I've been > developing. > there has been no "Is there any interest..."-e-mail yet, as it was > started out of necessity in "namespace detail" of another library, so > you're also welcome to express interest/disinterest in a library like > this, without any specific comments. > source code: > https://svn.boost.org/trac/boost/browser/sandbox/intro/boost/intro/ > the library defines a concept that exposes the members of a class, for > introspection algorithms to work with. Hi, Is it not what Boost.Fusion does already? The macro BOOST_FUSION_ADAPT_STRUCT looks very similar to your mapping: http://www.boost.org/doc/libs/1_43_0/libs/fusion/doc/html/fusion/adapted/ad… Regards, &rzej

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Re: [boost] [Boost-commit] svn:boost r63408 - trunk/boost/math
by Jürgen Hunold 29 Jun '10

29 Jun '10

On Monday, 28. June 2010 17:32:19 you wrote: > Author: johnmaddock > Date: 2010-06-28 11:32:19 EDT (Mon, 28 Jun 2010) > New Revision: 63408 > URL: http://svn.boost.org/trac/boost/changeset/63408 > > Log: > Make the compile time gcd facilities work with greatest integer types, and > be mpl compatible. This just broke gcc-4.2 and above. See gcc-4.2: http://tinyurl.com/28g49t8 http://preview.tinyurl.com/28g49t8 gcc-4.5: http://tinyurl.com/24jhn29 http://preview.tinyurl.com/24jhn29 for details. Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! Ingenieurgesellschaft für * voice: ++49 511 262926 57 ! Verkehrs- und Eisenbahnwesen mbH * fax : ++49 511 262926 99 ! Lister Straße 15 * juergen.hunold(a)ivembh.de ! www.ivembh.de * * Geschäftsführer: ! Sitz des Unternehmens: Hannover * Prof. Dr.-Ing. Thomas Siefer ! Amtsgericht Hannover, HRB 56965 * PD Dr.-Ing. Alfons Radtke !

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