July 2014 - Boost - lists.preview.boost.org

Printing Variables in Jam Files
by Axel Ismirlian 21 Jul '14

21 Jul '14

Hello, I am trying to debug the gcc.jam in for my platform, and I really wanted to know what the value of a certain variable model is. local model = [ feature.get-values address-model : $(properties) ] ; How do I print this out? How do you print anything in jam files really? Sincerely, -Axel

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[boost-test] Is there interest in BOOST_AUTO_TEST_SUITE_TEMPLATE
by Damian Vicino 21 Jul '14

21 Jul '14

I was working last few days in refactoring some tests for some class templates we have to use BOOST_AUTO_TEST_TEMPLATE in place of having several BOOST_AUTO_TEST with different hardcoded parameters. In our testing setup, we usually have one suite per class we are testing. Since we want to cover all test of the suite using same template parameters, I defined the same parameters to every BOOST_AUTO_TEST_TEMPLATE. I was thinking, that maybe, it was nice to have the template parameter assigned to the test suite in place of the tests itself. Is someone else interested in this feature? If there is interest I can try to implement it. Regards, Damian

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[boost-mpl] question about using template template class
by Damian Vicino 21 Jul '14

21 Jul '14

Hi, I quoted a template class to put it into a mpl::vector doing this: boost::mpl::vector<int, boost::mpl::quote2<std::pair>> Then, I obtained the 2nd element like this: using A=typename boost::mpl::at<T, boost::mpl::int_<2>>::type; I need now to pass the original template class to a class like this: template<class A, template<class, class> class C> class B{ C<A, B*> _c; }; I'm tried using apply or bind, but couldn't figure out the way to make it in a way that B accept it as second parameter. I get errors of the kind: error: template argument for template template parameter must be a class template or type alias template I also posted the question in stack overflow so if someone participates in stack overflow and want some potints the question is: http://stackoverflow.com/q/24856504/861649?sem=2 Thanks in advance, Damian

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[website] Invalid characters in authors' names on the libraries lists
by Adam Wulkiewicz 20 Jul '14

20 Jul '14

Hi, I noticed that there are some invalid characters in the names, e.g. on the page http://www.boost.org/doc/libs/1_56_0_b1 Vicente J. Botet EscribÃ¡ Ion GaztaÃ±aga JoaquÃn M LÃ³pez MuÃ±oz AFAIU it's not a problem with the charset because it's explicitly written this way in HTML: Vicente J. Botet EscribÃ¡ Ion GaztaÃ±aga JoaquÃn M LÃ³pez MuÃ±oz So I'm guessing that there is a problem with some conversion from ... to HTML or with the ... source file. If the problem couldn't be fixed, the replacing of the problematic letters would be an obvious workaround. Btw, what needs to be done to modify this page? Is it stored in QBK and built automatically or is it stored in HTML format only? The same question for http://www.boost.org/users/history/version_1_56_0.html, however in this case I managed to find HTML file in the Website module. If I'd like to modify those pages what should I do? Regards, Adam

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Re: [boost] [EXTERNAL] Re: [Boost-users] [1.56.0] Beta 1 Available
by Belcourt, Kenneth 20 Jul '14

20 Jul '14

On Jul 20, 2014, at 1:58 AM, Rainer Deyke <rainerd(a)eldwood.com> wrote: > On 18.07.2014 17:01, Marshall Clow wrote: >> Boost release 1.56.0 beta 1 is now available from SourceForge > > I'm experiencing problems cross-compiling Boost 1.56.0b1 (host Linux > Mint 17 x86_64, target x86_64-w64-mingw32), and I think this is due to > the build system not picking up my user-config.jam. In Boost 1.55.0, I > placed my user-config.jam in <boost_root>/tools/build/v2, and it worked. > In Boost 1.56.0b1 this directory no longer exists, so I tried placing > my user-config.jam in <boost_root>/tools/build and in > <boost_root>/tools/build/example where the example user-config.jam is > located. Neither of these seem to work, i.e. the invoked compiler is the native compiler g++ and not the cross-compiler specified in user-config.jam. Try putting user-config.jam into tools/build/src and see if it finds it there. If not, you can run b2 —debug-configuration and it will output where it searches for user-config.jam (and other components). — Noel

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[boost-test] question about using templates for tests
by Damian Vicino 20 Jul '14

20 Jul '14

Hi, I’m trying to test a template with different parameters and I can’t figure out how to do it for the following case. My class is something like this: template<class T, class M, template<class, class> class F> class C { T t; M m; F<T, std::shared_ptr<C<T, M, F>; Public: … } So my test, should receive 3 template classes, first 2 normal classes and a third which receives 2 Template Parameters. For now I’m just duplicating the tests for each implementation I write for F and they pass. Anyway, it is starting to be hard to maintain, a template solution would be great. F is suppose to receive a priority_queue like parameter, something getting a value and a comparison operator. For example, this is one of the parameters I’m testing with: template <class VALUE_TYPE, class COMPARE_TYPE> using priority_queue_vector = std::priority_queue<VALUE_TYPE, std::vector<VALUE_TYPE>, COMPARE_TYPE>; Is it possible to do this with current Boost.Test? Thanks in advance

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[quickbook] Strange error regarding lists
by Edward Diener 20 Jul '14

20 Jul '14

Using the latest quickbook on 'develop' in some documentation I have: * a comment SOMENAME only to get the quickbook error: my_file:14: error: Nested blocks in lists won't be supported in quickbook 1.6. Why am I seeing this ?

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[clang] Using clang in Windows
by Edward Diener 19 Jul '14

19 Jul '14

Just a note to everybody about using clang in Windows. I upgraded the latest clang-linux.jam file in Boost Build on the 'develop' branch so that clang in Windows using gcc should now work for the purposes of testing Boost libraries. If you get the latest clang and build it on Windows using CMake with any of the mingw generators or Ninja, you will have a clang executable which will default to a target using gcc headers and libraries. If you add a line in user-config.jam such as: using clang : : yourpath/clang++.exe ; then you should be able to execute: b2 toolset=clang in order to run tests from withion a test directory for any Boost library using clang as your compiler. The output looks very good without any of the problems I have seen before when running clang in Windows. Just make sure you switch to the Boost Build 'develop' branch and pull the latest source. I have been successful so far when running tests of preprocessor, mpl, type_traits, and tti with clang in Windows. I will test some more libraries but so far it looks to me that the clang developers have finally created a version under Windows which can be used to successfully test Boost libraries. This adds one more reliable testing environment under Windows. Now I can use the latest clang, various flavors of gcc under mingw, and various flavors of VC++.

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Re: [boost] Portable robust mutex an another try...
by Ladislav Sopko 18 Jul '14

18 Jul '14

Hello, I did try to continue with */Ion Gaztanaga's /*idea of portable robust mutex. I post my code and considerations in codereview. http://codereview.stackexchange.com/questions/57083/portable-c-boostiterpro… I hope to find some one to discuss about. thx > Hi, > > The portable mutex has been in dormant state for a long time, so thanks > for recovering it ;-) > > It wasn't further developed and I think your proposal could be an > improvement, although I still don't like the preallocation of a 4MB > file. I have no much time lately to review and add improvements to > Interprocess, but please add this link or the patch to a boost trac > ticket or as a GitHub pull request so that this is not forgotten when I > find some time. > > Best, > > Ion > > > Hi, Allocation of that 4MB is small fee for much better performance, because continuous search of files on disk slow it down really hard. Then I think to extend it with time stamp as Niall Douglas wrote. I just need atomic CAS for 64bit. Cause the time stamp and process ID must be changed in one shot. Then I can skip many robust checks, if the time from last lock is shorter than some predefined interval. So many regular locks will neither test file lock and it will run faster. In case one process die, there will be expired timeout and lock candidate will go check file lock. I'll check if I can add a 64bit CAS in boost\interprocess\detail\atomic.hpp. (if you know how it should be done, it will be a big help for me, cause I have not a lot of practice in atomic portable world.) regards -- Sopko Ladislav 3D Informatica, Via Speranza 35, 40068, S.Lazzaro di Savena - Bologna, Italy Tel: +39051450844 | Fax: +39051451942 WWW: http://www.3di.it Documentation: https://intra.3di.it/manuali/ - http://wiki.3di.it FTP: ftp://ftp@ftp.3di.it, Download:/3di, Upload:/incoming **** Informativa Privacy - Ai sensi del D. Lgs n. 196/2003 (Codice Privacy) si precisa che le informazioni contenuti in questo messaggio sono riservate e ad uno esclusivo del destinatario. Qualora il messaggio in parola Le fosse pervenuto per errore, La preghiamo di eliminarlo senza copiarlo e di non inoltrarlo a terzi, dandocene gentilmente comunicazione. Grazie. Privacy Information - This message, for the D. Lgs m. 196/2003 (Privacy Code), may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addessee, you must not use, copy, disclose or 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. Thanks you for your cooperation. --

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regex iterator memory leak
by Marjan Yahyanejad 18 Jul '14

18 Jul '14

I am using the example code of regex iterator in http://www.boost.org/doc/libs/1_55_0/libs/regex/doc/html/boost_regex/ref/re… , in a linux machine with default boost config which means NON RECURSIVE, and 4096 block size , I run the example with mtrace , setting it at first line of main method and doing muntrace right before return 0, I see that 4096 bytes get lost based on mtrace logs. if there are no flaws in my test, then is there something I should separately call to free up that memory? Otherwise that blocks seems lost to me. The original reason I started this test was that I have a similar code, and I see memory corruption on my machine which is causing connection drops to my rabbitmq server and it goes away as soon as I comment out the following three lines. So I think there is something wrong with the memory allocations of boost regex iterator. boost::sregex_iterator m1(text.begin(), text.end(), expression); boost::sregex_iterator m2; std::for_each(m1, m2, &regex_callback); Thanks --

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