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preview of a template geometry library
by Tom Brinkman 03 Feb '08

03 Feb '08

My geometry needs are fairly simple. At this point, I just need them to create simple graphic primitaves, such as coloring in polygons, determining interesection points, simplyfing lines, etc. All these things appear to be addressed in this library, so I'm looking forward to following this library progress. I've created my own versions of many of these algorithms, but more as a learning excercise and they are not very good. In any event, I would be available if you want to chat offline for some reason.

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BoostCon Call for Sessions
by Jeff Garland 03 Feb '08

03 Feb '08

The second annual Boost conference will take place in Aspen, Colorado, May 5-9. BoostCon is the main face-to-face event for all things Boost, from generic-programming techniques to Boost community, from using Boost libraries to writing Boost libraries, from deployment considerations to promoting the use of Boost more widely, from TR1 to TR2. Given the range and interests of last year's participants, the event again promises to be intense and in depth. We invite you to propose a session. See the BoostCon home page at www.boostcon.com for more information. Session formats Presentations focus on a practitioner’s ideas and experience with anything relevant to Boost and Boost users. Panels feature three or four people presenting their ideas and experiences relating to Boost's relevant, controversial, emerging, or unresolved issues. Panels may be conducted in several ways, such as comparative, analytic, or historic. Tutorials are formally prepared sessions at which instructors teach conference participants specific Boost-relevant skills. Workshops provide an active arena for advancements in Boost-relevant topics. Workshops provide the opportunity for experienced practitioners to develop new ideas about a topic of common interest and experience. Author's Corner Presentations focus on tips on usage and design. In addition, we're looking to uncover the hidden design gems hidden in boost libraries -- see below for more. Other formats may also be of interest. Don't hold back a proposal just because it doesn't fit into a pigeonhole. Session topics Topics of interest include, but are not restricted to, the following: * General tutorial sessions introducing one or more Boost libraries * In-depth sessions on using specific libraries * Case studies on using Boost * Experts panels * Advanced sessions on implementation techniques used within Boost libraries * TR1 (and TR2) * Development workshops to extend or enhance existing Boost libraries * Workshops on design process * Infrastructure workshops o Build tools o Website o Testing * C++0x and how it will change life for users and library writers * Concepts and Generic Programming * Other topics likely to be of great interest to Boost users and developers Interactive and collaborative sessions are encouraged, as this is the nature of both the online Boost community and the style of learning and participation that has proven most successful at such events. Sessions can be tutorial based, with an emphasis on interaction and participant involvement, or workshop based, whether hands-on programming or paper-based, discussion-driven collaborative work. Author's Corner Presentations Based on user feedback from last year, we'd like to encourage Boost library authors to do short sessions (typically 30 minutes) providing an overview of their libraries, tips on usage and design. In particular, we're looking to uncover the hidden design gems that underlie so many boost libraries. Standard outline for a presentation is as follows -- feel free to deviate as needed. * Library Purpose / Motivations * Library Genesis & History o why you developed it o when it was accepted o how it has evolved * Library Concepts * Library Usage Overviews and Tips * Library Design Decisions / Design Gems * Question / Answer Submitting a proposal Standard Sessions are 90 minutes. You may submit a proposal for fractions or multiples of 90-minutes. Fractional proposals will be grouped into 90 minute sessions covering related topics. Longer sessions, such as tutorials and classes, will be assigned 90 minute, three hour (i.e. half day), or six hour (i.e. full day) time slots. Please include: * The working title of the session * Type of session: presentation/panel/tutorial/workshop/other * A paragraph or two describing the session, suitable for the conference web site * Proposed length: 45/90 minutes, half/full day * Alternate length, if any: 45/90 minutes, half/full day * Audience: users/developers/both * Level: basic/intermediate/advanced * A biography, suitable for the conference web site * Your contact information (will not be made public) Please submit via email to conference at boost-consulting.com, with a subject that begins "BoostCon proposal" Timeline Proposals due As soon as possible. Proposals will be accepted on a first-come-first-served basis. Proposals acceptances sent As soon as accepted. Session materials due April 15, 2008. The session material go on the BoostCon CD handed out to attendees. Other arrangements Like Boost itself, BoostCon is strictly non-profit. Conference organizers are not paid for their time. Any surplus money will be rolled over into the succeeding year BoostCon budget. BoostCon provides free admission for all 90 minute and longer session presenters. This year we also hope to have enough revenue to pay presenters of longer sessions a small honorarium.

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Re: [boost] accumulators::histogram
by Hansi Hansi 02 Feb '08

02 Feb '08

I have looked another time to the implementation of the histogram. If we want to implement it in the same class density, than it is needed to provide default parameter for density_cache_size or min/max. Is it possible to ensure that either density_cache_size or min/max is provided as parameter? Sorry for the question but I'm not so familiar with parameters... Best regards Hansjörg _______________________________________________________________________ Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 30 Tage kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=022220

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BoostCon: Attn all Lib Developers
by Jeff Garland 02 Feb '08

02 Feb '08

I'd appreciate if any boost library authors that are planning to come to BoostCon could let me know (just email me) -- I'd like to get you signed up for an Author's Corner session. People on the program committee can ignore this.... Thx, Jeff

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[1.35.0] Volunteer[s] wanted: Building release snapshots
by Beman Dawes 02 Feb '08

02 Feb '08

In the past, the release manager has waited until a release is almost ready, and then started building and posting release candidates. Getting set up to generate the release candidates takes longer than expected. The release candidates themselves turn out to be missing files or have other problems that take longer than expected to resolve. I propose we start building daily release snapshots, regardless of where we are in a release cycle. I'm calling these "snapshots" rather than "candidates", since they are really only release candidates late in the release cycle. Building snapshots on a daily basis would have these benefits: * The mechanical procedure would become smooth, and so could eliminate one of the delays that plague the current release process. * The snapshots could be inspected, tested, and otherwise checked for quality control on an ongoing basis. Since release tarball problems could be detected and fixed earlier in the release cycle, this could reduced or eliminated a source of delays. * The release workload could better distributed, since generation of snapshots could be handled by someone other than the release manager. Comments? Would anyone like to volunteer to take this on? They would need a high speed internet connection as the files involved are quite large. --Beman

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Licensing Your Library Under the BSL (WAS Re: preview of a template geometry library)
by Dean Michael Berris 01 Feb '08

01 Feb '08

On Feb 2, 2008 2:49 AM, Frank Mori Hess <frank.hess(a)nist.gov> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Friday 01 February 2008 07:33 am, Barend Gehrels wrote: > > > > Of course you can download and look at the sourcecode, no problem. It is > > stated like this because it is not yet open source, it is not yet > > submitted or accepted by boost and at no other open source site. > > Therefore I cannot state there that it is open source at this moment. > > However, for review purposes it is allowed to look in it. > > If this is not sufficient I can change the statement. > > It sounds like you think you need to get the library accepted into boost > before you can license it under the BSL. You don't need permission from > anyone but the copyright owner to release your source code under the BSL. > The boost license doesn't place any obligations on you to make any special > arrangements for distribution of the source code. > I am not a lawyer, but I don't think your code needs to be accepted into Boost to be released under the Boost Software License. I have a few libraries already under the BSL but not (yet) in Boost, released in the wild. I also seem to recall that the default license for all 'unlicensed' work is "All Rights Reserved." Again though, IANAL. -- Dean Michael C. Berris Software Engineer, Friendster, Inc. [http://cplusplus-soup.blogspot.com/] [mikhailberis(a)gmail.com] [+63 928 7291459] [+1 408 4049523]

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Review Request:boost.lexer
by Ben Hanson 01 Feb '08

01 Feb '08

Hi There, I have posted boost.lexer to the Boost File Vault and would like to request a review. Hartmut has integrated my library 'lexertl' into Spirit already, so this is the boost version of that library. Thanks, Ben Hanson

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[Boost.build] Install_name wrong on OS X dylibs with latest CVS
by Mike Jackson 01 Feb '08

01 Feb '08

I just checked out and built boost on OS X 10.4 and there is a problem with the "install_name" or "rpath" on the dynamic libraries that are built. The "install_name" that is embedded in the libraries are basically useless as they do not contain a correct path to the libraries. Example for the filesystem is: 532:[mjackson@Thor:boost]$ otool -L /Users/Shared/Sandbox/boost- install/lib/libboost_filesystem-1_35.dylib /Users/Shared/Sandbox/boost-install/lib/libboost_filesystem-1_35.dylib: bin.v2/libs/filesystem/build/darwin/release/ libboost_filesystem-1_35.dylib (compatibility version 0.0.0, current version 0.0.0) bin.v2/libs/system/build/darwin/release/ libboost_system-1_35.dylib (compatibility version 0.0.0, current version 0.0.0) /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.4.0) /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.3.9) There are a couple of choices for the "Correct" value. The best (IMHO) would be to put in the absolute path to the installed library, so on my system that would be: /Users/Shared/Sandbox/boost-install/lib/libboost_filesystem-1_35.dylib We could also put _no_ path on the install_name, but that requires the user to additionally set the DYLD_LIBRARY_PARH which Apple discourages. The fix would be to add the following to the "actions link.dll bind LIBRARIES" section of the boost/tools/build/v2/tools/darwin.jam file: -headerpad_max_install_names -install_name "{Install_prefix_lib_location}$(<[1]:D=:S=.dylib)" ..... I do not know anything about bjam so I have no idea how to get the "Install_prefix_lib_location". Could some one tell me how to get at that value somehow and I will create a patch. -- Mike Jackson OS X Build Specialist

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Gauging interest for MT async signals utility
by Roland Schwarz 01 Feb '08

01 Feb '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Behaviour of standard signal.h / csignal is known to be different on windows and posix platforms. While on posix typically there is no provision for the thread context the signal handler will run, on windows the operating system delivers signals into a separate dedicated thread. This makes it possible e.g. to use locking primitives without risk for deadlock. I wrote a little utility that mimics that behavior on posix platforms by blocking all signals during application startup and launching a dedicated thread that has signal handling turned on. Since every other thread (that has been started after main) inherits the all-blocking sigmask, there is only one thread to handle the signals. The utility also allows a boost function pointer for the signal handler. I would be interested if there is believe such a utility would be worth including to boost. Also I would be interested on critics and opinions. A little usage example that would deadlock on posix when using std signal() instead of reset_signal(): boost::mutex mx; void foo(int sig) { std::cout << "foo attempting to lock" << std::endl; boost::mutex::scoped_lock lk(mx); std::cout << "foo got lock" << std::endl; } int main(int argc, char* argv[]) { reset_signal(SIGINT, foo); boost::mutex::scoped_lock lk(mx); std::cout << "main got lock, holding it now for 10 secs" << std::endl << "pressing ctrl-c triggers the handler" << std::endl ; sleep(10); lk.unlock(); std::cout << "unlocked, waiting another 10 secs" << std::endl; sleep(10); std::cout << "main ending" << std::endl; return 0; } - -- _________________________________________ _ _ | Roland Schwarz |_)(_ | aka. speedsnail | \__) | mailto:roland.schwarz@chello.at ________| http://www.blackspace.at -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHo1ENXW/dzA70DqARAqIUAJ4mhBCCYzWfDwJPfE6hQugtcm7bDgCePCQl 9J/vCHcpM6uplXk8VSpMVDg= =ldmb -----END PGP SIGNATURE-----

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[1.35.0] Host for release snapshots?
by Beman Dawes 01 Feb '08

01 Feb '08

If we are going to generate release snapshots nightly, we need a site to host them. Is Sourceforge a possibility? I seem to recall the Sourceforge release mechanism isn't particularly friendly to nightly snapshots. Ideas? --Beman

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