March 2011 - Boost - lists.preview.boost.org

[asio] Read timeout and failures
by Mr. Robert G Palmer Jr. 17 Mar '11

17 Mar '11

I'm running boost v1.45 on WindowsXP SP3 I've read all the stuff on using async reads if you want a timeout and I'm going to switch to the from my current synchronous read code. However, I have a question regarding failures. I have been using a synchronous read_some() call. This states that it will return/throw an error/exception on an error condition. If I'm connected on a TCP socket to another device and I UNPLUG the network cable, does this not shutdown the socket and shouldn't the read_some() return/throw an error/exception. Unplugging the cable seems like an error condition to me, but in my case, the code just hangs at the read_some() call and never returns. Thanks, -- Robert G. Palmer, Jr. Ingenutec, LLC

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[guild][pool] Improving the doxygen generation
by Vicente Botet 17 Mar '11

17 Mar '11

Hi Paul, I have checked how other libraries avoid to have some macros in the interface as for example static char *malloc BOOST_PREVENT_MACRO_SUBSTITUTION(const size_type bytes); or BOOST_STATIC_CONSTANT(unsigned, min_alloc_size = (::boost::de↵ tails::pool::ct_lcm< sizeof(void *), sizeof(size_type)>::value)); It seems that you need to add the following in the Jamfile "PREDEFINED=\"BOOST_PREVENT_MACRO_SUBSTITUTION\" \\ \"BOOST_STATIC_CONSTANT(T,V)=static x const y\" \\ It will be great if you can add to the guild/mylibrary the usual macros that are used by some libraries at the interface level as \"BOOST_DEDUCED_TYPENAME=typename\" \\ \"BOOST_CONSTEXPR=constexpr\" \\ HTH, Vicente -- View this message in context: http://boost.2283326.n4.nabble.com/guild-pool-Improving-the-doxygen-generat… Sent from the Boost - Dev mailing list archive at Nabble.com.

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Re: [boost] [Boost-commit] svn:boost r70044 - in trunk/tools/quickbook: . src
by Steven Watanabe 17 Mar '11

17 Mar '11

AMDG On 03/16/2011 05:13 PM, dnljms(a)gmail.com wrote: > +import os ; > + > project quickbook > : requirements > <toolset>gcc:<c++-template-depth>300 > @@ -16,6 +18,11 @@ > <toolset>darwin:<cflags>-g0 > ; > > +if [ os.name ] = NT > +{ > + lib shell32 ; > +} > + This doesn't need to be declared conditionally. > exe quickbook > : > quickbook.cpp > @@ -50,4 +57,5 @@ > <toolset>msvc:<cxxflags>/wd4800 > <toolset>msvc:<define>_CRT_SECURE_NO_DEPRECATE > <toolset>msvc:<define>_SCL_SECURE_NO_DEPRECATE > +<os>NT:<library>shell32 > ; Shouldn't this be using <target-os>windows, instead of <os>? In Christ, Steven Watanabe

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[quickbook] Intsallation
by Lorenzo Caminiti 17 Mar '11

17 Mar '11

Hello all, What is the best way to properly install Boost.QuickBook on Windows? The documentation instructions have broken links... I cannot get Igor's xsltproc installation link to work... Thank you. -- Sent from my mobile device Lorenzo

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using detail/no_exceptions_support.hpp in user code
by Krzysztof Czainski 16 Mar '11

16 Mar '11

Hello, Since no_exceptions_support.hpp is in boost/detail, I assume it isn't meant to be used in user code. However, I find it useful, and I expect many people to find it useful as well. So, could no_exceptions_support.hpp be moved out of boost/detail? Regards, Kris

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OK to remove Concept related config macros?
by John Maddock 16 Mar '11

16 Mar '11

I notice we have some Boost.Config macros related to C++0x concepts, except of course concepts are no longer part of C++0x... anyone object if I remove these along with their associated tests? Regards, John.

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is_base_of: bug in trunk, not in sandbox
by Frédéric Bron 16 Mar '11

16 Mar '11

Thanks to Christopher Jefferson, I discovered a bug in the trunk (in fact in 1.46.0) for is_base_of in the type_traits library. is_base_of<int, int>::value should be true according to the doc: "is_base_of<Base, Base>::value is an integral constant expression that evaluates to true: a class is regarded as it's own base. However the following program prints 0 and not 1 with g++ 4.4.5 on linux: #include <boost/type_traits/is_base_of.hpp> #include <iostream> int main() { std::cout<<::boost::is_base_of<int, int>::value<<'\n'; return 0; } Using the sandbox version of is_base_of works just fine. This makes my type trait extension fail on 6 tests when using only the trunk (for the 6 comparison operators). I have a workaround for my extension which is to add "or is_same<T, U>" but it would be better if is_base_of would work correctly. Frédéric

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Looking for a speaker
by Sergey Razin 16 Mar '11

16 Mar '11

Hello! Perhaps not on a topic of a particular library, but as a contributor to boost as well as big fan of opensource I felt it would be appropriate to post this request here. One of the largest in southeast open source conferences "Palmetto Open Source Conference" will take place in Columbia, SC March 23-25. Link: http://www.posscon.org check out speakers, contributors and sponsors, tracks, etc. As one of the key contributors I felt that we are very much lacking C and python representation, and for that what's better then Boost? In addition x0 is on the way with boost in it, the interest is there...! I am looking for a speaker. Preferably a key member of the boost community and/or boostcon speaker. I know that's sort of a short notice, but the event is FUN (check out), sponsorship is welcome but not required, and as a speaker you just have to show up and enjoy all the perks. If you interested to participate and you fall in the above mentioned category please contact me @ sergey.razin(a)gmail.com or via this mailing list (whatever is easier). Certainly if you interested to attend, please feel free to contact me as well and we will work out deal for you (especially if you bringing a group). Not many people know about boost, but they should, and certainly it will open up consulting opportunities as well (a couple of major firms in the area are looking). Looking forward for your email. Thank you! Sergey

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[asio] file i/o under linux
by Kamil Nowosad 16 Mar '11

16 Mar '11

Hi, I have been working recently on support for asynchronous file i/o in asio library in linux. Perhaps some of my code will interest you. The interface allows for doing read, write and fsync/fdatasync operations. The implementation uses either POSIX AIO or linux-native libaio (this may be currently switched by #define ASIO_USE_LIBAIO). I have based the initial work on patch brought by Felipe Magno de Almeida in 2005 (http://lists.boost.org/Archives/boost/2005/09 /93068.php). As you may realize by studying my modifications of task_io_service, the file i/o operations are unable to coexist with operations of other kind within single io_service. I did not have time to test it thoroughly, but basic tests pass. The patch is created against 1_45_0 version, however everything works well when applied to 1_46_1. The tarball contains also a simple example file and a script that compiles it. I will be pleased to receive any feedback. -- Best regards, Kamil Nowosad

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[boostcon] site down
by Michael Caisse 16 Mar '11

16 Mar '11

This is my second day not being able to access the site. -- Michael Caisse Object Modeling Designs www.objectmodelingdesigns.com

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