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boost::interprocess::interprocess_semaphore::timed_wait - how to do a relative wait
by Jean-Sebastien Stoezel 24 Feb '11

24 Feb '11

Hi: I'm using boost::interprocess::interprocess_semaphore::timed_wait and boost::interprocess::message_queue::timed_received. I have to specify an absolute time to give up waiting/receiving. This works in most cases, except my application sometimes needs to adjust the PC clock. If the PC clock is adjusted backwards in time, then these function wait longer than they should (since the end time is fixed in the future). Ideally I would like to provide an absolute time instead, which would be independent of the time of day? The API doesn't seem to allow this. How can I do this? I guess I could also use a deadline timer (ASIO). Any help on this would be appreciated. Thanks, Jean

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My Apologies -- Please Disregard
by Robert Pennington 23 Feb '11

23 Feb '11

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by Robert Pennington 23 Feb '11

23 Feb '11

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Re: [Boost-users] [Filesystem] Symbol not found: boost::filesystem2::detail::status_api
by Nicolas Chaumont 23 Feb '11

23 Feb '11

Hello Júlio, Thanks for your reply. I've tried to pass the libraries that I needed in a past attempt. It didn't help. If I don't specify any library to bootstrap.sh, all the libraries are built. This way, I'm sure I don't miss anything. It also makes the explanation of what I did more straightforward. I'll definitely have a closer look at the doc. I might have missed something, although it would be surprising to have to modify something in the configuration to make such a simple example build. Sincerely, Nicolas -----Original Message----- From: Júlio Hoffimann Sent: Wed 2/23/2011 3:54 AM To: boost-users(a)lists.boost.org Cc: Nicolas Chaumont Subject: Re: [Boost-users] [Filesystem] Symbol not found: boost::filesystem2::detail::status_api Hi Nicolas, It's my first time using Boost, but i think you missed the build steps. The Boost library is header-only, except this parts: http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.htm… < http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.htm… >For example, i'm using Boost.MPI and Boost.Random, my bootstrap.sh call is something like: ./bootstrap.sh --prefix=/your/desired/path --with-libraries=mpi,random I think you need to pass Filesystem to bootstrap.sh before anything. Also is a good idea read it's docs, because maybe you will need to edit some specific configuration files like i did in Boost.MPI. Regards, Júlio.

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cannot find config script in Boost 1.45.0_1 mac os x (snow), g++ 4.2.1
by ny 23 Feb '11

23 Feb '11

Hi, I wonder if my boost set-up is the "proper" one since I cannot find config script as described in here http://goo.gl/yPe9V Any ideas? Nikos Yiotis Chat Skype: nyiotis Contact Me [image: Linkedin]<http://my.wisestamp.com/link?u=ws7c27w2vnrx4d2b&site=www.linkedin.com/in/yi…>

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Boost release 1.46.0 available
by Beman Dawes 23 Feb '11

23 Feb '11

Release 1.46.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release includes 1 new library (Interval Container Library) as well as updates to many existing libraries. For details, including download links, see http://www.boost.org/users/news/version_1_46_0 The release can also be downloaded directly from SourceForge. See http://sourceforge.net/projects/boost/files/ To install this release on your system, see http://www.boost.org/doc/libs/release/more/getting_started/index.html Thanks, --The Boost release team

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Re: [Boost-users] [boost] Boost release 1.46.0 available
by Daniel James 23 Feb '11

23 Feb '11

On 22 February 2011 15:33, Vladimir Prus <vladimir(a)codesourcery.com> wrote: > > It's not. I suggest any links to bjam be removed. OK, I'll remove the link on the home page soon. >> then it probably also means that the build and jam >> documentation on the site are out of date. > > At which URL specifically? I think all documentation for Boost.Build > is up to date. Also, there should be no documentation for Boost.Jam now. http://www.boost.org/tools/jam/ l can change it to redirect to the relevant part of the build documentation, although that's moved around a bit recently so it's hard to keep up. Daniel

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[Filesystem] Symbol not found: boost::filesystem2::detail::status_api
by Nicolas Chaumont 23 Feb '11

23 Feb '11

Hello and thank you for reign my post, When I want to compile the program: #include "boost/filesystem.hpp" int main(int argc, char** argv) { boost::filesystem::path path; boost::filesystem::exists(path); //<=This is the line that causes the error return 0; } I get the following error: "boost::filesystem2::detail::status_api(std::basic_string<char, std::char_traits <char>, std::allocator<char> > const&, boost::system::error_code&)", referenced from: boost::enable_if<boost::filesystem2::is_basic_path<boost::filesystem2::basic_pat h<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem2::path_traits> >, bool>::type boost::filesystem2::exists< boost::filesystem2::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem2::path_traits> >( boost::filesystem2::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem2::path_traits> const&)in main.o ld: symbol(s) not found collect2: ld returned 1 exit status I'm using XCode 3.2.4, Darwin GCC 4.2 with the Mac OSX 10.6 SDK. The program links against the libboost_system.a and libboost_filesystem.a libraries from Boost 1.45, both compiled with the same compiler. Boost was compiled in the most straight forward way, i.e. from the boost root directory, I invoke the only two commands: ./bootstrap.sh make Note that I haven't installed the library in /usr/local. Since the example compiles fine with the problematic line commented out, I assume the include path is correct, and that the linker found libboost_system.a (in stage/lib). I also made sure there are no other versions of boost present on my computer to eliminate the possibility of a header/library version mismatch. Also, I've tried to compile with different architectures, both in debug and release mode. I couldn't remove this error. I looked for the missing symbol in both libboost_system.a and libboost_filesystem.a (nm -m <library name> | c++filt), and the filesystem2 namespace doesn't exist. My understanding is that the boost::filesystem2 namespace was never generated when I compiled the libraries, but for some reason is generated when I compile my little program. So I suppose there might be a definition that triggers or prevents this namespace from being created. Anyone has an idea about what should I do to remove my error? Thank you in advance, Regards, Nicolas

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boost::transform_iterator and C++0x decltype
by Nathan Ridge 23 Feb '11

23 Feb '11

Hello, Currently (boost 1.46) boost::transform_iterator requires that the unary functor 'f' passed to it use the 'result_of' protocol to declare its return type (that is, it must either have a nested 'result_type' typedef, or in the case of polymorphic functions, a nested 'result' metafunction that computes the return type given the parameter type). Would it be a good idea to modify the requirements so that if the boost library detects C++0x support, it uses 'decltype' to determine the return type of the functor, so that the functor does not have to use the 'result_of' protocol? I would be happy to contribute a patch implementing this. Regards, Nate.

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[spirit] how to write parser for matching character not in list ?
by Kamil Zubair 23 Feb '11

23 Feb '11

Let's say I want to match a string and that string cannot contain character ; and @. How to write parser for that ? I try using: *(!(';"'|'@')) and *(char_ - ';'|'@') but both are failed to compile. Thanks.

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