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[fusion] sequence io manipulators
by Jeff Flinn 27 Mar '13

27 Mar '13

When streaming unrelated fusion sets to unrelated ostringstreams from different threads, I get an invalid iterator error. This appears to be due to using a boost::fusion::detail::stream_data::attach's local static arena instance. static void attach(Stream& stream, T const& data) { static arena ar; // our arena ar.data.push_back(new T(data)); stream.pword(get_xalloc_index<Tag>()) = ar.data.back(); } I assume there are issues with using the unguarded stream_data::data std::vector<T*> from multiple threads. This implementation looks problematic in that the arena data does not get cleaned up until program exit as well. Jeff

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[atomic] Could you merge to trunk?
by Vicente J. Botet Escriba 26 Mar '13

26 Mar '13

Hi, there are some modification on trunk that need to be merged to release branch because there are some incompatibilities. Could this be done soon? Thanks, Vicente

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GSoC: Backup admin wanted
by Boris Schaeling 26 Mar '13

26 Mar '13

Anyone who wants to be the backup admin for the GSoC program (in case Boost is accepted)? Drop me a mail if you are interested. We need one for the application. :) Thanks, Boris

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[persistent] BerkeleyDB, SQLite, more
by Stefan Strasser 26 Mar '13

26 Mar '13

Hello everyone, if this is the first time you're hearing about this library proposal, please start by reading the "Motivation" and "Approach" sections here: http://tinyurl.com/ct2vfp5 I've had some time to kill lately, so there are now working storage backends for BerkeleyDB and SQLite. Here's a simple example storing and modifying some objects in a BerkeleyDB: http://pastebin.com/yXJbTdz7 There is also a virtual interface that lets you decide which database to use at runtime, or dynamically link different DBMSs. You'll also be able to use multiple databases at once and have global transactions among them, if the DBMS supports two-phase commits. Are there any suggestions for other storage engines to support? If you are familiar with one you are also very welcome to contribute. The interface is very simple and no knowledge of library internals is needed. At this point storage engines to support should be: - transactional. There is code for a MVCC transaction layer from my own storage engine, but it's not generic enough yet to just put it on top of a non-transactional engine like google's LevelDB. - good at handling BLOBs to store serialized objects. Object/Relational mapping is a whole other project. - preferrably have a very free license. The BerkeleyDB code is seperated from the rest so I don't think there are problems with the GPL-like license "infecting" the entire library if you don't use it. But if you do, it's GPL or commercial. I've looked at Tokyo Cabinet in some detail, but it seems more like a collection of functions to me, that one could use to build a DB with, than a robust product. I would like to be proven wrong on this, as it's often compared to BerkeleyDB and is LGPL-licensed. Suggestions for other embedded databases that could be supported are also welcome. Best regards, Stefan

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New regression test reporting system
by Steven Watanabe 26 Mar '13

26 Mar '13

AMDG I just replaced the XSL scripts used to generate the regression test reports with a C++ implementation. If you encounter any broken links, bad markup, etc., please let me know. I rushed this a bit because xsltproc was misbehaving, and the old reports were coming out empty, so I haven't checked the output as thoroughly as I would have liked, yet. It should become more stable in the next day or two. In Christ, Steven Watanabe

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[gil] Pixel Hasher
by Harg Tholan 26 Mar '13

26 Mar '13

Hey, I've been looking for a hashing function for PixelBased types... with no succes, so I created one. Does this have any value for users? Regards,

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[gil] numeric extensions pixel division.
by Harg Tholan 26 Mar '13

26 Mar '13

Hey, It seems that in the numeric extensions it is implemented the division of channels, but not the division of pixels. Are you planning to include it at some point? thanks.

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Boost.Graph for GSoC 2013 - Yes/No/Maybe?
by Darius L. 25 Mar '13

25 Mar '13

Hi all, I'd like to gauge the interest in proposing a project in Boost.Graph for GSoC (and beyond). Would anyone be interested in additions to Boost.Graph? (to-do list here hasn't changed in a while: http://www.boost.org/doc/libs/1_53_0/libs/graph/doc/challenge.html) If so, what exactly would you be interested in? Also, would anyone be open to mentoring for this project?

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[boost-build] Android support
by Antony Polukhin 25 Mar '13

25 Mar '13

Greetings, There is a project at github, that has a series of patches for Android support. It contains android.jam and android.py files for bjam, and those files have Boost license https://github.com/MysticTreeGames/Boost-for-Android. Why don't we adopt those patches to boost trunk? This will help a lot of people, who use boost under Android. -- Best regards, Antony Polukhin

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License of endian and limits in Boost detail
by Philip Bennefall 25 Mar '13

25 Mar '13

Hi all, For my project, I am trying to stick exclusively to the Boost Software license. I wanted to use boost/cstdint.hpp, which pulls in a lot of content (boost/config.hpp is the one that includes the most). Among the things it includes I see boost/detail/endian.hpp and boost/detail/limits.hpp. In both of these, I see: /* * Copyright (c) 1997 * Silicon Graphics Computer Systems, Inc. * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Silicon Graphics makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. */ This looks to me like it enforces inclusion of the above text in object code distributions, which as far as I know is something that the Boost license requirements say must not be done. Looking at http://www.boost.org/users/license.html I see: Must not require that the license appear with executables or other binary uses of the library. Is there a Boost license alternative? Kind regards, Philip Bennefall

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