April 2007 - Boost - lists.preview.boost.org

[gil] opencv wrapper update for gil 2.0
by Christian Henning 24 Apr '07

24 Apr '07

Hi there, I have uploaded my opencv wrapper for gil 2.0 . I'm not sure if this is the right list to post such announcement. Please let me know if that isn't. I know about the gil forum but I think since gil is part of boost now I might as well post it here. More people! ;-) Anyway, the wrapper so far is very immature but provides some basic facilities like drawing primitives, image resizing, etc. I would like to add as much as possible to this gil extension, but I'm not so sure about my library design. So, every comment would help me a lot. check it out here: https://gil-contributions.googlecode.com/svn/trunk

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[1.34.0] Beta Release
by Thomas Witt 24 Apr '07

24 Apr '07

Hi, Here is the, as always tentative, release plan. I'll be starting packaging 1.34.0 Beta on Monday. This will go out as soon as I am done. The goal is to have a 2 week beta period and then create a RC followed shortly by the relase. Depending on feedback we'll extend the beta to 4 weeks. Thomas -- Thomas Witt witt(a)acm.org

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Boost Asio on multi processor environment
by Gaurav.Jain＠iflexsolutions.com 24 Apr '07

24 Apr '07

Hi, I am designing a server which will going to run on multiprocessor and which will going to provide service to thousand of clients concurrently. I am using boost asio library to do this. I want to know how can I use one io_service object per CPU approach for this? Regards, Gaurav DISCLAIMER: This message contains privileged and confidential information and is intended only for an individual named. If you are not the intended recipient, you should not disseminate, distribute, store, print, copy or deliver this message. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete or contain viruses. The sender, therefore, does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required, please request a hard-copy version.

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test...ignore
by Jeff Garland 24 Apr '07

24 Apr '07

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[asio] Multiple Interface Multicast Receive Error
by dhk24＠drexel.edu 24 Apr '07

24 Apr '07

I am trying to get a dual homed computer working receiving multicast messages using ASIO and there appears to be all kinds of problems. Firstly, when trying to receive multicast traffic ASIO will only ever bind to one address. Even explicitly providing an IP address to bind to will not convince the OS to allow you to bind to that address. In my case it always attempts to bind to the device that is connected to the WAN. Secondly, even if both devices are connected to the same network, ASIO will only receive multicast packets on one interface. If that interface is disconnected it will no longer receive multicast packets. I have tested this using both the any address and with explicit IP addresses over multiple sockets. Neither seem to work. Disabling all interfaces except the one receiving Multicast traffic allows ASIO to bind to the last remaining interface and receive packets properly. I have seen this problem using ASIO 0.3.7 and both my own programs and the default multicast receive included with ASIO. I have also been able to replicate it using Windows XP SP2 and Fedora Core 6 ( 2.6.20-1) Any explanation or help would be greatly appreciated Dan

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serialization idea - netcdf4
by Neal Becker 24 Apr '07

24 Apr '07

I wonder if anyone has worked on this? It seems serialization of numerical containers to standards like netcdf4 would be very useful.

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Re: [boost] Boost packages?
by Paul Hickey 24 Apr '07

24 Apr '07

Excuse the super long delay in posting this, I did try a couple of weeks back but failed to register first. Paul Hickey wrote: > > David Abrahams wrote: >> on Mon Apr 02 2007, Roland Schwarz <roland.schwarz-AT-chello.at> wrote: >> >>> David Abrahams wrote: >>>> No, boost is not even one library much less a monolithic one. Boost >>>> is a library collection. I've seen the dependencies among the Boost >>>> libraries graphed, and unlike some other development frameworks, >>>> which just show up as a big blob, Boost is neatly partitioned and the >>>> dependencies tend to be a unidirectional DAG. >>> Really? I very much would like to see this graph. >> >> It was in a preview of code structure analysis software from this >> company: http://headwaysoft.com/index.php. They were interested in >> making an analysis of Boost publicly (I think) available online. I've >> Bcc'd my friend there; if he wants to pipe up, he will (Paul, you have >> to register if you want to post on this mailing list). >> > Just back from vacation so excuse the slow response. > >>> If this is available somewhere I think it would be nice to show it >>> somewhere on the web! >> > Dave was referring to a product we used to sell called Headway Review, > which had reasonable GCC C++ support and poor VS C++ support. Headway > Review has since been put out to pasture, and been replaced by the > leaner, meaner, cleaner Structure101. > > Support for C++ for Structure101 is long overdue, but hopefully will > see light of day before the end of the year. More anon. > > Given the lessons we learnt from Headway Review in general and Headway > Review for C++ in particular, when Structure101 for C++ does finally > see the light of day, I am confident the folks in the Boost community > will be interested. ;-) > >> Agreed, for real. >> >>> Besides being a nice eye-candy it would >>> support those in need for these kind of arguments. >> >> Ditto. >> >>> I would have volunteered in providing this graph, but unfortunately >>> I must have been doing something completely wrong when I was trying >>> to generate such a graph on my own. It reminded me very much of the >>> wool ball my cat likes to play with than a well structured graph. :-( >> > If you really want to do this now, I'd be happy to provide an > unsupported copy of Review so you can get some sense of where you stand. > Contact me directly if you do. > >> Well, at the time, Headway's software really did show a remarkable >> difference between Boost and ACE in that respect. >> > Thats for sure! ;-) >

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Marshalling library
by Hans Larsen 24 Apr '07

24 Apr '07

Is there a marshaling library in boost and is there an interest in such a functionality? Is the serializing library any use to marshall calls? I've not seen any mails concerning marshaling recently, though I might have missed one. Thanks, Hans I'm thinking something along the lines of the following. Although it may not be possible, I think it is (maybe the function registry is not necessary). int func( int i, int j ) { using namespace std; cout << "i: " << i << " j:" << k << endl; return i + j; } int main() { using m = boost::marshall; using std; int funcid = 1; m::register_function( funcid, func ); // Using same principles as in boost::function for type safety. m::call x(funcid, 1, 2); string str = x.serialize(); m::call y( str ); try { cout << y() << endl; } catch( m::invalid_function x ) { cout << x.what() << endl; } return 0; } // ------ // Should output: // i: 1 j: 2 // 3

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[GIL] GIL is in Boost CVS repository
by Lubomir Bourdev 24 Apr '07

24 Apr '07

The latest GIL is now in Boost's CVS repository. Thank you for the insightful reviews. We have implemented many of the suggested improvements in GIL 2.0. A summary of the more significant changes can be found here: http://opensource.adobe.com/gil/gil2.0_changes.pdf Thanks, Lubomir

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boost::freetype - extension for boost::gil
by Tom Brinkman 24 Apr '07

24 Apr '07

>> I'd rather we not call it freetype at all - wrap it up as a generic >> text renderer, that just happens to use freetype underneath. I'm not shur how the adobe's guys will want to incorporate the extensions. This freetype wrapper will be just one of many extensions that will be added to GIL.

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