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Re: [Boost-users] Suggestion for boost::dll:import_alias<>() or boost::dll::import<>()
by Leo Carreon 19 Jun '16

19 Jun '16

Sorry, I figured out how to use the search capability. I was misinformed because the documentation did not include the possible values for boost::dll::load_mode which I discovered by needing to have a look in the source code. From: Leo Carreon Sent: Sunday, June 19, 2016 1:40 PM To: Boost Users Mailing List Subject: Suggestion for boost::dll:import_alias<>() or boost::dll::import<>() Hi, I have been experimenting with the Boost.DLL library and I have discovered that the “lib” argument of either boost::dll::import_alias<>() or boost::dll::import<>() functions require the full path to the shared library to load. If I’m not mistaken, this functions use either the POSIX dlopen() function or the Windows LoadLibrary() function. These platform specific functions are capable of searching a list of paths if a non-qualified shared library name is given. My suggestion is to use this search capability for non-qualified shared library names. Kind regards, Leo Carreon

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Suggestion for boost::dll:import_alias<>() or boost::dll::import<>()
by Leo Carreon 19 Jun '16

19 Jun '16

Hi, I have been experimenting with the Boost.DLL library and I have discovered that the “lib” argument of either boost::dll::import_alias<>() or boost::dll::import<>() functions require the full path to the shared library to load. If I’m not mistaken, this functions use either the POSIX dlopen() function or the Windows LoadLibrary() function. These platform specific functions are capable of searching a list of paths if a non-qualified shared library name is given. My suggestion is to use this search capability for non-qualified shared library names. Kind regards, Leo Carreon

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is parallel-bgl active?
by Salvador Aguiñaga 17 Jun '16

17 Jun '16

Installing on a local 2 core system on a cluster ends in errors Installing on small system I want to use for temporary development, I get the following error. > > >parallel-bgl-0.7.0/boost/property_map/property_map.hpp:16:37: fatal > error: boost/pending/cstddef.hpp: No such file or directory > compilation terminated > > I've configured the system: > >"sudo apt-get install build-essential" > > And successfully installed the openmpi: "openmpi-1.10.2.tar.bz2" > > But when I get to: > /parallel-bgl-0.7.0/build/cmake .. > > I can't find a good solution online to this cstddef.hpp error. > > Any suggestions? > > > My system: uname -a > > Linux atomix 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 14:46:51 UTC 2015 > i686 i686 i686 GNU/Linux >

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Re: [Boost-users] boost bind, issue moving from 1.57 to 1.60
by Jason Mancini 17 Jun '16

17 Jun '16

We worked around this failure by changing: Func = boost::bind(Func, _1) && boost::bind(&Boom::Oops, _1); to Func = boost::bind(AND, Func, &Boom::Oops, _1); // custom AND function Not sure why it used to work, or why it still works with raw pointers, but not shared_ptr. The actual change happens from 1.59 (working) to 1.60 (changed behavior). Jason

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Undefined Reference to 'boost::system::generic_category()'
by Blair Climenhaga 16 Jun '16

16 Jun '16

Hello everyone, I have been attempting to install OpenFOAM however the boost library has been giving me trouble, most recently reading out these error during OpenFOAM installation. undefined reference to `boost::system::generic_category()' undefined reference to `boost::system::system_category()' undefined reference to `boost::detail::set_tss_data(void const*, boost::shared_ptr<boost::detail::tss_cleanup_function>, void*, bool)' undefined reference to `boost::detail::get_tss_data(void const*)' If anyone has ever encountered this problem before, or has a hypothesis on how to solve I would be eager to hear your advice. I should mention that this error has persisted across multiple attempts at boost installs (1.48.0,1.52, and 1.61.0) as well as an update of my system from Ubuntu 12.04 to 14.04. Thank you everyone for your time in reading this and for any advice you may give. All the best, Blair Climenhaga

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[xint] Ptoblems with compiling
by Андрей Серебро 16 Jun '16

16 Jun '16

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[Log] Get the streams in a text_ostream_backend derived class
by Florian Lindner 16 Jun '16

16 Jun '16

Hello, I have class StreamBackend : public boost::log::sinks::text_ostream_backend and manually instantiate the backend and add a stream boost::shared_ptr<StreamBackend> backend = boost::make_shared<StreamBackend>(); backend->add_stream(boost::shared_ptr<std::ostream>(new std::ofstream(some file name))); using sink_t = boost::log::sinks::synchronous_sink<StreamBackend>; boost::shared_ptr<sink_t> sink(new sink_t(backend)); sink->set_formatter(config.second.format); sink->set_filter(config.second.filter); boost::log::core::get()->add_sink(sink); All I want is to overwrite the consume function in the derived class. Since I want to retain the original functionality as far as possible, I would like to work on the streams added add_streams. Problem is that the m_pImpl->m_Streams vector in the implementation is private and there is no method to get the added streams. What is the best way to go here? Thanks, Florian

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boost bind, issue moving from 1.57 to 1.60
by Jason Mancini 16 Jun '16

16 Jun '16

Hello, The following minimized program works under 1.57 but no longer under 1.60, as the second bind results in calling of a member function with nullptr at run-time. Is the code mal-formed? Is it a boost bind bug? It still works fine with raw pointers, but no longer works correctly with boost::shared_ptr. Same result with gcc 4.8.1 and gcc 6.1.0 on Linux. Thanks, Jason ------------------- #include <stdio.h> #include <boost/shared_ptr.hpp> #include <boost/make_shared.hpp> #include <boost/bind.hpp> #include <boost/function.hpp> struct Boom { bool Oops() const { printf("Boom::Oops @ %p\n", this); return true; } }; int main() { boost::shared_ptr<const Boom> obj = boost::make_shared<Boom>(); using tMatcher = boost::function<bool(boost::shared_ptr<const Boom>)>; tMatcher Func = boost::bind(&Boom::Oops, _1); Func = boost::bind(Func, _1) && boost::bind(&Boom::Oops, _1); Func(obj); } ------------------- Expected output: Boom::Oops @ 0x11f6d79 Boom::Oops @ 0x11f6d79 Actual output: Boom::Oops @ 0x11f6d79 Boom::Oops @ (nil) -------------------

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Handling process termination
by Shaginesh P.K.(NeSTIT) 12 Jun '16

12 Jun '16

Hi All, I am using boost library for logger. Seems pretty good. Am using boost with asynchronous sink. Hence require a close down of sink explicitly. But this is not possible when process crashes. Do boost have any mechanism for the same (Like handling the signals of OS and like stack dumps)? What does boost prefer for unexpected termination of process where the logs will go out uncollected? Could you please help me out of this? Thanks and Regards Shaginesh PK ________________________________ Confidentiality Statement / Disclaimer : This message and any attachments is intended for the sole use of the intended recipient. It may contain confidential information. Any unauthorized use, dissemination or modification is strictly prohibited. If you are not the intended recipient, please notify the sender immediately then delete it from all your systems, and do not copy, use or print. Internet communications are not secure and it is the responsibility of the recipient to make sure that it is virus/malicious code exempt. The company/sender cannot be responsible for any unauthorized alterations or modifications made to the contents. If you require any form of confirmation of the contents, please contact the company/sender. The company/sender is not liable for any errors or omissions in the content of this message. ________________________________

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Re: [Boost-users] Another query on Boost DLL Library
by Leo Carreon 11 Jun '16

11 Jun '16

Please ignore this question, I found out the answer with a bit more understanding of the example. From: Leo Carreon Sent: Thursday, June 09, 2016 2:07 PM To: Boost Users Mailing List Subject: Another query on Boost DLL Library Hi, When using the factory method when creating a plugin, is it possible to pass an argument to the factory method? If yes, how? Kinds regards, Leo

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