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Boost.Log: Set formatter for named_scope attr.
by David Puffer 14 Nov '13

14 Nov '13

Hi, Being new to Boost.Log (and Boost in general) I have spent the last few days trying to implement Boost.Log - which Is working fairly well by now. However - I encountered one problem that I've not been able to solve by now, although it seems to me quite trivial: I have successfully registered the "named_scope" attribute and I am populating its value by a call to BOOST_LOG_FUNCTION. This works well and I can see the function-name in my log-output. However - I also want the line-number and the file-name, and discovered that there's a possibility to set the output-format of the "named_scope" attribute (which already incorporates file-name and line-number info) like so: #include <boost/log/expressions/formatters/named_scope.hpp> sink->set_formatter(expr::stream << expr::format_named_scope("Scopes", "%n")); As documented here: http://www.boost.org/doc/libs/1_54_0/libs/log/doc/html/log/detailed/express… I just don't seem to find any way to get to my sink - which is configured in a settings-file and evaluated by a call to the init_from_stream() function. Is there any way to query for all the sinks - or get a sink by name? How is one supposed to set a sink formatter for a sink which was generated by the library and not the user? Or is there a way to specify the output-format for named attributes via a settings-file as well? As far as I can see it's only possible to format the output of a log record as a whole - but not single attributes. Also: Is it correct, that the above function will only set the format for the "Scopes" attribute - which means I could call this function repeatedly for lets say the "TimeStamp" attribute as well? Best regards, David

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[Log] Error with operator<< in basic_formatting_ostream
by Víctor Yo 14 Nov '13

14 Nov '13

Hi ewveryone, I'm working lately with Boost.Log (I'm a newbie) library and I want to write a logger with some parameters and formatting options. I followed the documentation, I created a backend and a frontend and I tried to format the output in the frontend with the set_formatter() function. I tried with the Lambda style and with the Boost.Format style but I'm getting an error that I can not locate. Iwas working on it for the last two whole days but I couldn't find a solution. It is related with the basic_formatting_ostream, but I don't understand what that means. I defined the backend and attached to it two streams (to a file and to cout) typedef boost::log::sinks::text_ostream_backend our_backend; typedef boost::log::sinks::synchronous_sink<our_backend> our_frontend; //............................................................................................................................................ boost::shared_ptr<our_backend> backend = boost::make_shared<our_backend>(); //Stream definitions boost::shared_ptr<std::ostream> stream_out(&std::cout, boost::log::empty_deleter()); boost::shared_ptr<std::ostream> stream_file(new std::ofstream("file_logger.log")); backend -> add_stream(stream_out); backend -> add_stream(stream_file); Created the frontend (and wrapping the backend to it) //Wrap the backend into the frontend and register in the core. //The frontend provides synchronization for the backend. boost::shared_ptr<our_frontend> frontend(new our_frontend(backend)); And now come the offending code which is supposed to format the output (note that the first commented block was my first try). None of them works and the error is the same in both cases: */*frontend -> set_formatter* * (* * boost::log::expressions::format("[%1%] %2%, File: %3%, Line: %4% <%5%>: %6% ")* * % boost::log::attributes::counter< unsigned int >(1)* * % boost::log::attributes::local_clock()* * % boost::log::expressions::attr< severity_level >("Severity")* * % boost::log::expressions::message* * );*/* //We are going to define the formatter in a different style to try to get formatted output frontend -> set_formatter ( boost::log::expressions::stream << boost::log::attributes::counter< unsigned int >(1) <<" ["<< boost::log::attributes::local_clock() <<"] <"<< boost::log::expressions::attr< severity_level >("Severity") <<"> "<< boost::log::expressions::message ); The error I get is the next one: */home/victor/Programacion/workspace/opice/build-parallel/../libs/include/boost/log/utility/formatting_ostream.hpp:664:5: error: no match for ‘operator<<’ in ‘(& strm)->boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT, AllocatorT>::stream [with CharT = char, TraitsT = std::char_traits<char>, AllocatorT = std::allocator<char>, boost::log::v2_mt_posix::basic_formatting_ostream<CharT, TraitsT, AllocatorT>::ostream_type = std::basic_ostream<char>]() << value’* And I really don't know what is happening. I also included a lot of files (I'm sure I included too much files, indeed) to be sure it was not caused by some undefined operator or something similar. However I still have the same problem. The includes are: #include <iostream> #include <fstream> #include <string> #include <boost/thread/shared_mutex.hpp> #include <boost/log/core.hpp> #include <boost/log/common.hpp> #include <boost/make_shared.hpp> #include <boost/log/expressions.hpp> #include <boost/log/utility/setup/file.hpp> #include <boost/log/utility/setup/console.hpp> //puede ser innecesario #include <boost/log/utility/setup/common_attributes.hpp> //puede ser innecesario #include <boost/log/utility/empty_deleter.hpp> #include<boost/thread/mutex.hpp> #include <boost/log/attributes/timer.hpp> #include <boost/log/attributes/mutable_constant.hpp> #include <boost/log/sources/severity_logger.hpp> #include <boost/log/utility/formatting_ostream.hpp> #include <boost/log/sinks/text_ostream_backend.hpp> #include <boost/log/sinks/sync_frontend.hpp> #include <boost/log/support/date_time.hpp> As you can see, they are probably redundant or innecessary but I could rip off that files when I could get the program compiled. Now, I'm out of ideas so any help you could bring me should be very appreciated. Thank you in advance. Victor Hevia

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[1.55] PDF Documentation build available.
by John Maddock 14 Nov '13

14 Nov '13

The final PDF documentation build for Boost-1.55 is now available at https://sourceforge.net/projects/boost/files/boost-docs/1.55.0/ As ever this only contains documentation for the subset of Boost libraries that use quickbook/boostbook/docbook based documentation. Enjoy! John.

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Boost 1.54.0 Header Warnings: Shadowed Variables
by Tom Browder 13 Nov '13

13 Nov '13

I am trying to use Boost 1.54.0 to replace a previous version (1.47) and am using g++ 4.7 with most warnings turned on. I am getting many -Wshadow errors and wonder why they exist. Surely the developers test for such. Here is one example from xpressive/detail/utility/hash_peek_bitset.hpp: Both 'icase' and 'count' are reported to shadow members of 'this'. Note that the bool arg is named 'icase' but the compiler reports 'this' has a member named 'icase' (as can be plainly seen below). In this example it's fairly clear what is intended, but then again maybe not (and it doesn't give the user much confidence in the code). It isn't good practice IMHO to do such so that is why I like to use some prefix or suffix to disambiguate the two variables. // Make sure all sub-expressions being merged have the same case-sensitivity bool test_icase_(bool icase) { std::size_t count = this->bset_.count(); if(256 == count) { return false; // all set already, nothing to do } else if(0 != count && this->icase_ != icase) { this->set_all(); // icase mismatch! set all and bail return false; } this->icase_ = icase; return true; } I could file many bugs but it begs the question of why the warnings are allowed in the first place. Suggestions? Thanks and best regards, -Tom

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[Boost.Iterator] Problem compiling zip_iterator with clang and C++11
by Jonathan Jones 13 Nov '13

13 Nov '13

Hi folks, The following code fails to compile on OSX 10.8.5 with Xcode 5.0.1 and Boost 1.49.0. This is not real world code, but it demonstrates the problem I'm facing. #include <boost/iterator/zip_iterator.hpp> template<typename T> void foo() { boost::zip_iterator<boost::tuple<T*, T*> > iter; std::fill(iter, iter, std::make_pair(T(),T())); } void bar() { foo<int>(); } Here are the commands I used to compile (if I drop "-stdlib=libc++" from the compile line, the code compiles just fine): setenv DEVELOPER_DIR /Applications/Xcode5.0.1.app/Contents/Developer xcrun -sdk macosx10.8 clang++ -c zip_iterator.cpp -I<boost-path>/include -std=c++11 -stdlib=libc++ and here is a heavily formatted snippet of the key error: /Applications/Xcode5.0.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/algorithm:1824:1: note: candidate function [with _RandomAccessIterator = boost::zip_iterator<boost::tuples::tuple<int*, int*>>, _Tp = std::__1::pair<int, int>] not viable: no known conversion from typename iterator_traits<zip_iterator<tuple<int*, int*>>>::iterator_category (aka 'boost::detail::iterator_category_with_traversal<std::__1::input_iterator_tag, boost::random_access_traversal_tag>') to 'std::__1::random_access_iterator_tag' for 4th argument __fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value_, random_access_iterator_tag) Any help is appreciated. Thanks, Jon

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[Math] BOOST_FPU_EXCEPTION_GUARD on Linux
by David Roberts 13 Nov '13

13 Nov '13

Hello, I have a program that makes considerable use of the gamma distribution from Boost.Math. Profiling with OProfile has shown that, on Linux, this program spends about 20% of its runtime calling the functions fesetexceptflag() and feclearexcept(). The code responsible for calling these is in the BOOST_FPU_EXCEPTION_GUARD macro which is defined in boost/math/tools/config.hpp. I have looked back through the source history to see when and why this macro was added, and it was in changeset 3186 from September 2006 with the comment "More linux fixes: finally got AMD64 machines to behave correctly" (see https://svn.boost.org/trac/boost/changeset/3186) In Boost 1.54 the conditions under which the guard macro is defined have been refined since it was originally added, but the guard class itself remains the same as in 2006. Given the performance penalty I am suffering as a result of constantly clearing and reseting the floating point exception flags, I have a couple of questions about this functionality: 1) Can anyone provide a specific test case that did not work without the BOOST_FPU_EXCEPTION_GUARD functionality but was fixed by its addition? It would be very useful to have such a test case because then I can check if this is still a problem on recent versions of Linux. 2) The commit comment for changeset 3186 refers to AMD64. Does this mean the original problem only occurred on AMD CPUs, or does this refer to the architecture, and hence it affected both Intel and AMD CPUs? Many thanks, David Roberts

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[Graph] Static allocation of nodes and edges
by Sensei 13 Nov '13

13 Nov '13

Dear all, I need to optimize my code with regards to both memory and time. The problem is simple: pre-allocating the adjacency matrix. The graph may have a huge number of nodes N, but the number of edges K per node is limited. While N can be in the order of one hundred million, K is at most 10. The graph will be directed, so no symmetry is needed. Do you know if I can pre-allocate such an adjacency matrix? If not, I suppose I must use an adjacency list in order to minimize memory consumption, am I right? Thanks!

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Help with lockfree queue
by TYSON Kieran 13 Nov '13

13 Nov '13

[@@ OPEN @@] Hello, I am using a global lockfree queue to transfer a message from different threads. The program compiles and runs without fault up until the program exits and the queues destructor is called. An unhandled exception is thrown on the destruction of the queue. Below is the code used to set up the queue. #define B1_OUTPUT_LENGTH_PER_CHANNEL (32000) #define B2_OUTPUT_LENGTH_PER_CHANNEL (32000) #define B3_OUTPUT_LENGTH_PER_CHANNEL (64000) #define NB_CHANNELS (8) typedef struct s_OutputMsg { float dataB1[(int)B1_OUTPUT_LENGTH_PER_CHANNEL*NB_CHANNELS]; float dataB2[(int)B2_OUTPUT_LENGTH_PER_CHANNEL*NB_CHANNELS]; float dataB3[(int)B3_OUTPUT_LENGTH_PER_CHANNEL*NB_CHANNELS]; int dataLength; } OutputMsg; boost::lockfree::queue<OutputMsg, boost::lockfree::fixed_sized<true>> dataMsgQueue(100); My first thoughts are that there are limitations on the size of the message because I have used simple integer queues in the past with no problem. Are there size limitations on the message of a lockfree queue? Thanks, Kieran This message contains OPEN information that is not sensitive and can be freely accessed by people both inside and outside of the Thales Group This email was classified by Tyson, Kieran on Wednesday, 13 November 2013 10:58:41 AM ------------------------------------------------------------------------- DISCLAIMER: This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. -------------------------------------------------------------------------

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How to convert cmyk jpg file to rgb jpg file with BOOST.GIL?
by Guangchao Wang 13 Nov '13

13 Nov '13

I used following code: rgb8_image_t rgb8Img; jpeg_read_and_convert_image("CMYK.jpg", rgb8Img); //CMYK.jpg is CMYK image jpeg_write_view("RGB.jpg", const_view(rgb8Img)); to convert CMYK image to RGB image. The saved RGB.jpg is not correct. Could you give me some suggestion? Thanks.

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[Locale] Getting correct system locale under Mac OS X
by Orhun Birsoy 11 Nov '13

11 Nov '13

I am using boost 1.55.0.rc2. I am running 10.8.5 and when I select "Norway (Norwegian Bokmal)" (nb_NO) as the region, LANG env. variable is undefined, making boost::locale::generator("") to generate a "C" locale. I can of-course get the locale identifier from NSLocale (or CFLocale) and initialize the boost::locale::generator with "nb_NO" which seems to be working, but with Mavericks things got even more interesting. It looks like, in 10.9 you can mix and match language with a country anyway you like i.e. I can select "Norway" as my region and "English" as my language and again LANG is empty but NSLocale returns "en_NO". But this time when I use boost::locale::generator("en_NO"), boost::locale::as::number uses "." (dot) as decimal separator, although NSLocale reports "," (comma). 1. Can boost::locale handle such combinations (en_NO, en_TR, etc)? (I am using ICU backend, others are explicitly turned off). a. for number formatting? b. for messages formatting (translations)? which mo will it pick for en_TR ? 2. How can I 'customize' locale generated by boost::locale to reflect the changes user might do in system locale settings (i.e. select en_US but change the decimal symbol)? Thanks. -- Orhun Birsoy

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Thanks to everyone for all the work on 1.55.0
by Marshall Clow 11 Nov '13

11 Nov '13

I just wanted to take off my "release manager" hat and say, personally, thank you to all the people who tried out the RCs/Betas/etc, reported bugs, and suggested fixes. You were all a big help in making the release. -- Marshall Marshall Clow Idio Software <mailto:mclow.lists@gmail.com> A.D. 1517: Martin Luther nails his 95 Theses to the church door and is promptly moderated down to (-1, Flamebait). -- Yu Suzuki

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Boost 1.55.0 released!
by Marshall Clow 11 Nov '13

11 Nov '13

Release 1.55.0 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 contains one new library and numerous enhancements and bug fixes for existing libraries. === New Libraries === • Predef: This library defines a set of compiler, architecture, operating system, library, and other version numbers from the information it can gather of C, C++, Objective C, and Objective C++ predefined macros or those defined in generally available headers, from Rene Rivera. === Known bugs with Visual Studio 2013/Visual C++ 12 === Visual Studio 2013 was released quite late in the release process, so there exist several unresolved issues. These include: • Serialization can't compile because of a missing include. • Using has_member_function_callable_with from Boost.Container's allocator_traits causes a compile error (#9332). • For several libraries overloads with intializer lists are incorrectly reported as ambiguous. This is a Visual C++ bug and it isn't clear if there's a good workaround. • In libraries such as Unordered and MultiIndex, calling overloaded functions with initializer lists can result in a compile error, with Visual C++ claiming that the overloads are ambiguous. This is a Visual C++ bug and it isn't clear if there's a good workaround. This won't affect code that doesn't use initializer lists, or uses an initializer list that doesn't require an implicit conversion (i.e. an initializer list of the container's exact value type). • Thread: ex_scoped_thread compile fails (#9333). For details, including download links, see http://www.boost.org/users/news/version_1.55.0 You can also download directly from SourceForge: http://sourceforge.net/projects/boost/files/boost/1.55.0/ 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 Vladimir Prus Rene Rivera Marshall Clow Eric Niebler Daniel James Beman Dawes

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[Polygon] attaching data to polygon boundary segments
by Andreas Buhr 10 Nov '13

10 Nov '13

Dear Boost community, I would like to process 2D geometry for a finite element solver using boost.polygon. I programmed it, it's working fine. I use the polygon_data and polygon_set_data types from boost.polygon. Now I would like to attach information to the boundary segments. Then I'd like to do boolean operations. At the end I would like to have the boundary information merged. Is this possible with boost.polygon? A attached a little drawing of what behavior I would like to achieve, colors code the boundary markers. thanks a lot in advance, Best regards, Andreas

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[BGL] how to use write_graphviz_dp with graph bundle properties
by Pablo Madoery 10 Nov '13

10 Nov '13

Hello. I know how to use write_graphviz_dp with vertices and edges bundle properties but i can't figure out how to print the graph_bundle property of a graph. i have the following code where the line with the error is commented: #include <boost/graph/properties.hpp> #include <boost/graph/graphviz.hpp> #include <boost/graph/adjacency_list.hpp> using namespace boost; using namespace std; struct VertexInfo { int id; }; struct EdgeInfo { int weight; }; struct GraphInfo { int duration; }; typedef adjacency_list<vecS, vecS, undirectedS, VertexInfo, EdgeInfo, GraphInfo> Graph; void printGraph(Graph graph, string file) { ofstream ofs(file.c_str()); dynamic_properties dp; dp.property("node_id", get(vertex_index, graph)); dp.property("label", get(&EdgeInfo::weight, graph)); ///dp.property("label", get(&graph[graph_bundle].duration)); ->error write_graphviz_dp(ofs, graph, dp); } int main() { Graph graph; Graph::vertex_descriptor a = add_vertex(graph); Graph::vertex_descriptor b = add_vertex(graph); Graph::vertex_descriptor c = add_vertex(graph); Graph::vertex_descriptor d = add_vertex(graph); Graph::edge_descriptor e1 = (add_edge(a, b, graph)).first; Graph::edge_descriptor e2 = (add_edge(b, c, graph)).first; Graph::edge_descriptor e3 = (add_edge(c, d, graph)).first; Graph::edge_descriptor e4 = (add_edge(d, a, graph)).first; graph[e1].weight = 1.1; graph[e2].weight = 1.5; graph[e3].weight = 5.2; graph[e4].weight = 1.2; graph[graph_bundle].duration = 10; printGraph(graph, "graph.dot"); }

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[Boost.Python] Exposing protected virtual member functions
by Vitaly Budovski 09 Nov '13

09 Nov '13

Hi, I'd like to expose some protected virtual member functions to Python, but I've been unable to find a practical way to do so. I've created a wrapper making the protected functions public, but have not been able to make further progress due to either compile errors or Python runtime exceptions. Is there something I've overlooked in the documentation? Please see code below. Thanks, Vitaly #include <boost/python.hpp> #include <string> using namespace boost::python; class base { //protected: public: virtual std::string f() { return "base::f"; } public: virtual std::string g() = 0; }; class derived: public base { public: std::string g() { return "derived::g"; } }; struct base_wrapper: base, wrapper<base> { std::string f() { if(override f = this->get_override("f")) { return f(); } return base::f(); } std::string default_f() { return base::f(); } std::string g() { return this->get_override("g")(); } }; BOOST_PYTHON_MODULE(protected) { class_<base_wrapper, boost::noncopyable>("base") .def("f", &base::f, &base_wrapper::default_f) .def("g", pure_virtual(&base_wrapper::g)) ; class_<derived, bases<base>, boost::noncopyable>("derived") .def("g", &derived::g) ; }

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Converting Timestamp into hex of 8 bytes
by Rahul Mathur 09 Nov '13

09 Nov '13

Sorry for wrong post. I have a string Timestamp of 1383889129 which on ONLINE conversion from string to hex gives a 10 bytes as "31 33 38 33 38 38 39 31 32 39". But, the need is to have the TIMEStamp in 8 bytes only. OR any other way using either C++ or Boost where I can convert the string Timestamp of 1383889129 into 8 bytes hex value. Any clue ..!!

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Handling JSON with Boost
by Jauhien Piatlicki 07 Nov '13

07 Nov '13

Hi all, I'm interested whether there exists a library for working with JSON in Boost that preserves data types? I know about property_tree, but if I read a valid JSON with it and then write it out it results in all fields being strings. This is because property_tree internally does not distinguish different value types. But I need something that can read e.g. {"number":42} get access to it and write it then in the same form. Thanks for answering, regards, Jauhien

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Boost API System or Library Calls ..
by Rahul Mathur 06 Nov '13

06 Nov '13

Out of curiosity, wish to know if BOOST ASIO calls like - boost::asio::read() boost::asio::transfer_all() boost::asio::write() BOOST LEXICAL calls like - boost::lexical_cast<std::string>() BOOST POSIX TIME calls like - boost::posix_time::microsec_clock::universal_time() boost::posix_time::microsec_clock::ptime() are LIBRARY or SYSTEM calls. How to know which calls of BOOST are SYSTEM and LIBRARY calls? Thanks.

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Safe to pass dereferenced anonymous shared_ptr?
by Chris Stankevitz 06 Nov '13

06 Nov '13

Q1: Is the below code dangerous? A1: Only if the anonymous shared_ptr is deleted before function f returns. Q2: Is the anonymous shared_ptr deleted before function f returns? A2: ? Thank you, Chris === #include <iostream> #include <boost/make_shared.hpp> void f(const int& i) { std::cout << "i = " << i << std::endl; } int main() { f(*boost::make_shared<int>(42)); return 0; }

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[Containter] Compilation errors with 1.55 and VC2013
by Szymon Gatner 05 Nov '13

05 Nov '13

Hi, I am getting compilation errors with Container library after trying to build with Visual Studio 2013 and Boost 1.55 RC: Error 1 error C2228: left of '.select_on_container_copy_construction' must have class/struct/union c:\devel\boost_1_55_0\boost\intrusive\detail\has_member_function_callable_with.hpp 200 1 ConsoleApplication2 Minimalistic example to reproduce: #include <boost/signals2/connection.hpp> #include <boost/container/slist.hpp> #include <boost/container/vector.hpp> int main() { typedef boost::signals2::connection Connection; boost::container::vector<Connection> connections_; } Error happens wheter vector or slist is used (didn't try more containers) Regards, Szymon Gatner

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[LOG]: set_filter error in tutorial_filtering.cpp and per-sink instance filtering
by Johan Lundberg 05 Nov '13

05 Nov '13

Dear all, (this is my first post to this list) I'm trying to make a boost log sink that would filter on a severity level which should be thread-safely modifiable while logging is ongoing. On my way there I get errors while trying to compile this tutorial example: http://www.boost.org/doc/libs/1_54_0/libs/log/example/doc/tutorial_filterin… The file as-is compiles and runs fine, but if I switch on the user-provided filtering function example by activating the block in #if 0 (and commenting out the other definition of init()) I get errors related to phoenix bind: The offending line is 155: sink->set_filter(phoenix::bind(&my_filter, severity, tag_attr)); I would be grateful for advice on how to get that working. More details on that at the end of the mail. Now, assuming I get past the errors, what is a good way to add a per-sink log level filter? I may have several instances of the sink. To clarify: I know this is not the right syntax, but If I could use a custom functor or a C++11 lambda for a filter I would do something like this: using ATseverity=std::atomic<severity_level> ; // (severity is an enum) shared_ptr<ATseverity> shared_log_level = std::make_shared<ATseverity>(warning); sink->set_filter( [=shared_log_level]->bool(severity_level const& level, std::string const& tag){ return level >= shared_log_level->get(); }); I could then store and modify the shared_log_level from elsewhere. Is there a right way to do this? cheers /Johan Details on the compilation error: I think this is the relevant part of the error message: /myboost154/include/boost/phoenix/core/preprocessed/expression_10.hpp:140:17: error: could not convert ‘boost::proto::make_expr<boost::phoenix::detail::tag::function_eval, boost::proto::domainns_::basic_default_domain, boost::phoenix::detail::function_ptr<2, bool, bool (*)(const boost::log::v2_mt_posix::value_ref<severity_level>&, const boost::log::v2_mt_posix::value_ref<std::basic_string<char> >&)>, boost::log::v2_mt_posix::expressions::attribute_keyword<tag::severity>, boost::log::v2_mt_posix::expressions::attribute_keyword<tag::tag_attr> >((* & a0), (* & a1), (* & a2))’ from ‘const type {aka const boost::proto::exprns_::basic_expr<boost::phoenix::detail::tag::function_eval, boost::proto::argsns_::list3<boost::proto::exprns_::basic_expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::function_ptr<2,bool, bool (*)(const boost::log::v2_mt_posix::value_ref<severity_level>&, const boost::log::v2_mt_posix::value_ref<std::basic_string<char>>&)> >, 0l>, boost::log::v2_mt_posix::expressions::attribute_keyword<tag::severity>, boost::log::v2_mt_posix::expressions::attribute_keyword<tag::tag_attr> >, 3l>}’ to ‘boost::proto::exprns_::basic_expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::function_ptr<2, bool, bool (*)(const boost::log::v2_mt_posix::value_ref<severity_level>&, const boost::log::v2_mt_posix::value_ref<std::basic_string<char> >&)> >, 0l>::proto_child0 { aka boost::phoenix::detail::function_ptr<2, bool, bool (*)(const boost::log::v2_mt_posix::value_ref<severity_level>&, const boost::log::v2_mt_posix::value_ref<std::basic_string<char> >&)>}’ }; I tried boost 1.54 and compiled with gcc 4.7.1 and 4.8.1 under Linux, with and without C++11 mode: g++ -std=gnu++11 -DBOOST_ALL_DYN_LINK boostlogexample.cpp -L $BOOST/lib/ -I $BOOST/include/ -pthread -lboost_system -lboost_log_setup -lboost_log \ -lboost_date_time -lboost_thread -lrt -lboost_filesystem

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container with large number of elements and a small number of invalide elements
by MM 05 Nov '13

05 Nov '13

Hello, I have a need for a container where I can store 10^6 elements of type T (PODs) , a small number of which (say 100) can be invalid elements (ie special value of T) The 100 elements can be randomly distributed throughout the 10^6 elements. The container should be as close to a sequence container as possible. The required usages: 0. invalid elements can be set = 10^6 - 100 1. get number of valid elements in O(1) 2. get the max/min element of all valid elements 3. have a bidrectional iterator that iterators only over valid elements On a separate note, is there a version of multi_array where the number of dimensions is known at runtime? regards,

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[1.55.0] Release candidate 2 available
by Marshall Clow 05 Nov '13

05 Nov '13

RC2 files for 1.55.0 are available at http://boost.cowic.de/rc/ As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. This helps ensure the candidates build OK before we push them out to SourceForge. The files (and associated md5s) are: 93780777cfbf999a600f62883bd54b17 *boost_1_55_0_rc2.tar.gz d6eef4b4cacb2183f2bf265a5a03a354 *boost_1_55_0_rc2.tar.bz2 8aca361a4713a1f491b0a5e33fee0f1f *boost_1_55_0_rc2.zip 4e5bbc15fc8c80df8be428f8a5b5a823 *boost_1_55_0_rc2.7z Thanks! -- The release managers === Changes to release since rc1 === ---- Author: bemandawes Date: 2013-10-28 13:16:50 EDT (Mon, 28 Oct 2013) New Revision: 86503 URL: http://svn.boost.org/trac/boost/changeset/86503 Log: Merge 86426 from trunk. This should fix msvc test failures. ---- Author: bemandawes Date: 2013-10-29 09:15:03 EDT (Tue, 29 Oct 2013) New Revision: 86514 URL: http://svn.boost.org/trac/boost/changeset/86514 Log: Merge 84443 from trunk, to fix mpl assert failures for msvc in many libraries. ---- Author: eric_niebler Date: 2013-10-29 12:53:08 EDT (Tue, 29 Oct 2013) New Revision: 86516 URL: http://svn.boost.org/trac/boost/changeset/86516 Log: merge [86460] from trunk, fix bootstrap on mingw --- Author: jhunold Date: 2013-10-29 13:19:33 EDT (Tue, 29 Oct 2013) New Revision: 86519 URL: http://svn.boost.org/trac/boost/changeset/86519 Log: Merge 84402 from ^/trunk ------------------------------------------------------------------------ r84402 | jhunold | 2013-05-21 14:23:20 +0200 (Di, 21 Mai 2013) | 4 lines Fix: cache file loading and saving must use native paths Fixes caching at least on Windows platform ------------------------------------------------------------------------ --- Author: johnmaddock Date: 2013-11-01 05:32:55 EDT (Fri, 01 Nov 2013) New Revision: 86532 URL: http://svn.boost.org/trac/boost/changeset/86532 Log: Merge fix for dependency tracking. --- Author: danieljames Date: 2013-11-03 14:20:09 EST (Sun, 03 Nov 2013) New Revision: 86551 URL: http://svn.boost.org/trac/boost/changeset/86551 Log: Merge Visual C++ 12 fix for Unordered. --- Author: viboes Date: 2013-11-03 15:43:42 EST (Sun, 03 Nov 2013) New Revision: 86552 URL: http://svn.boost.org/trac/boost/changeset/86552 Log: Thread: merge [86540] to fix #9319.

8 12

boost::statechart "custom::reaction"
by rahul baruah 05 Nov '13

05 Nov '13

I am using boost::statechart. Instead of simple_state , using boost:: statechart::state. Now i am able to access the state_machine member variable. but when i am using custom::reaction or mpl::list it throught error. Code Snippet: struct NotReady : StateBase< NotReady, TopState > { //typedef NotReadyStateList reactions; NotReady (my_context ctx) : my_base( ctx ){ outermost_context().maxPairedDevices = 3; cout << outermost_context().maxPairedDevices << endl; } template< class MostDerived > sc::result react( const PairingBaseEvents< MostDerived > & ); public: typedef sc::custom_reaction< StartEvent > reactions; }; Error: ndefined reference to `boost::statechart::detail::safe_reaction_result NotReady::react<StartEvent>(PairingBaseEvents<StartEvent> const&)' regards Rahul Baruah

3 5

Concatenating int value to string ..??
by Rahul Mathur 05 Nov '13

05 Nov '13

All, I wish to have string (combination of string value and int value) which increments until 100. The code is as below - --- #include <iostream> #include <cstdlib> #include <string> #include <boost/lexical_cast.hpp> using namespace std; int main() { std::string TID = "Apple"; int TagID = 01, Value = 000 /* 100 IDs*/; std::string TagName, TagInitial, TagUId; TagName = TID + boost::lexical_cast<std::string>(TagID); // Should be as -> Apple01 TagInitial = TagName + boost::lexical_cast<std::string>(Value); // Should be as -> Apple01000 int i = boost::lexical_cast<int>(TagInitial) + 1; // Should be as -> Apple01001 TagUId = boost::lexical_cast<std::string>(i); std::cout << "Tag ID .." << TagUId << endl; } I get below error message - -- terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::bad_lexical_cast> >' what(): bad lexical cast: source type value could not be interpreted as target Aborted (core dumped) -- Any clue? ~ Thanks!!

7 11

XML Serialization
by Lasse Laursen 05 Nov '13

05 Nov '13

Hey People, I'm having some issues using BOOST's serialization capabilities in version 1.53. To be honest, the capability provided by boost seem to involve a lot of macro usage here and there, and despite the fact that I've read a number of tutorials, I still don't feel like I've got a solid grasp on how it all works. Probably because I keep running into compilation problems that I can't seem to figure out how to fix logically, I usually just end up trying a number of different macro's that other people recommend until it just works. Not ideal, I know, but... All my logical deduction usually leads me to solutions that don't work as I keep expecting. Case in point, I want to serialize some data as XML. Essentially it's just a struct with a few strings in it that is used as 'settings' data. I get the following error message during compilation in VS2012: Error 47 error C2664: 'boost::mpl::assertion_failed' : cannot convert parameter 1 from 'boost::mpl::failed ************boost::serialization::is_wrapper<T>::* ***********' to 'boost::mpl::assert<false>::type' d:\sdks\cinder\boost\boost\archive\basic_xml_iarchive.hpp 70 I found out, it had to do with any XML serilization requiring an additional 'name' to be added, pertaining to how XML works via the 'BOOST_SERIALIZATION_NVP' macro. I added that to all my strings - still nothing. Then I proceeded to comment out everything, so my struct is now just an empty shell: struct AEMSettings { // Superfluous since structs are fully public? friend class boost::serialization::access; AEMSettings() { } /*** * Serialize handles both input/output as the & operator doubles as both << and >> */ template<class Archive> void serialize( Archive &ar, const unsigned version ) { //ar & BOOST_SERIALIZATION_NVP( mSpeakersDeviceName ); //ar & BOOST_SERIALIZATION_NVP( mSpeakersDeviceDriverName ); //ar & BOOST_SERIALIZATION_NVP( mHeadphonesDeviceName ); //ar & BOOST_SERIALIZATION_NVP( mHeadphonesDeviceDriverName ); //ar & BOOST_SERIALIZATION_NVP( mMicrophoneDeviceName ); //ar & BOOST_SERIALIZATION_NVP( mMicrophoneDeviceDriverName ); } //std::string mSpeakersDeviceName; //std::string mSpeakersDeviceDriverName; //std::string mHeadphonesDeviceName; //std::string mHeadphonesDeviceDriverName; //std::string mMicrophoneDeviceName; //std::string mMicrophoneDeviceDriverName; }; Can anyone tell me what I am missing here? Regards, Gazoo

3 3

[Spirit] Parser omits certain characters
by beet 05 Nov '13

05 Nov '13

Dear all, For all of the following, please see the attached test-case. I would like to specify certain characterstics of variables in the following way: d(MY_DPAR_01,-10.3,12.8,100) . So in this case there is a type-identifyer (d stands for "double") and then, in parantheses, a variable name (or alternatively an index), a lower and upper boundary and some integer parameter. What is contained in the list depends on the parameter type. It should then be possible to specify any number of variables, including their properties, in a comma-separated list. So I need to dissect a string like the following: "d(MY_DPAR_01,-10.3,12.8,100), d(0,-10.3,12.8,100), i(SOME_IPAR_17, 0,5), b(SOME_BPAR)" The first step, as I see it, is to seperate the "outer" list and to store each variable description in a boost::tuple<char, std::string>, where the char holds the type identifier and the std::string the part inside the parantheses. Then, in the second step, I want to parse that string according to what is expected for this particular type. I have now run into the problem that the following rule in Boost.Spirit "swallows" all non-alphanumeric characters. qi::rule<std::string::const_iterator, std::string(), ascii::space_type> varSpec = +(alnum | '_' | ',' | '.' | '+' | '-'); varSpec stands for the text inside of the parantheses. I would have expected this to match any string of at least one of the listed character types (i.e. alpha-numeric, underscore, etc.). The rule qi::rule<std::string::const_iterator, boost::tuple<char, std::string>(), ascii::space_type> varString = char_("dfib") >> '(' >> varSpec >> ')'; is then meant to separate the type-descriptor from the description. Parsing with these yields the output d: MYDPAR01103128100 d: 0103128100 i: SOMEIPAR1705 b: SOMEBPAR on a Mac (Mavericks, Boost 1.54) i.e., only the alpha-numeric characters remain. So clearly my assumption about the "varSpec" rule is wrong. On a Ubuntu 13.10 System (Boost 1.54, g++ 4.8.1) I get the output d: d: i: b: which is equally wrong. Funnily, if I define varSpec simply as +char_, varSpec gives the correct result on the Mac (haven't tried Ubuntu), but varString does not match anything. So I am at a loss here and would appreciate some help. Best Regards and thanks for any help you can provide, Beet

3 4

[move] non-inline move constructor - won't compile
by Krzysztof Czainski 03 Nov '13

03 Nov '13

Hi, I've been trying to writhe a non-inline move constructor, to place its' implementation in a .cpp file. I'm having problems compiling my code, which I managed to simplify (after examining output of the preprocessor) down to this short code snippet: #include <boost/move/core.hpp> struct X { X( ::boost::rv< X >& x ); operator ::boost::rv<X>&() { return *static_cast< ::boost::rv<X>* >(this); } }; X::X( ::boost::rv< X >& x ) {} Compiling a .cpp file with the above contents gives me: a.cpp:41:1: error: prototype for 'X::X(boost::rv<X>&)' does not match any in class 'X' X::X( ::boost::rv< X >& x ) {} ^ a.cpp:35:8: error: candidates are: X::X(const X&) struct X ^ a.cpp:37:5: error: X::X(boost::rv<X>&) X( ::boost::rv< X >& x ); ^ I'm using MinGW gcc 4.8.1 in default -std mode (not-C++11 mode), boost-1.54. Am I doing something wrong here, or is it a bug in the compiler? Regards, Kris

3 4

Status of smart_assert
by Daan Baas 03 Nov '13

03 Nov '13

Howdy, I was searching for an intelligent assert facility with serveral debug levels, that asserts when it is run debug mode and throws in release mode. That is how i ran into Boost's SMART_ASSERT ( http://www.drdobbs.com/cpp/enhancing-assertions/184403745) However, I cannot find anything about it that was posted after 2003 nor can I find it on the Boost site. Does anyone know what happened to the project? Was is cancelled or did it make it into Boost under another name? Kind regards, Dano

2 2

[MSM] Parse error in Visual Studio 2012, not in Visual Studio 2013.
by Vincent N. Virgilio 02 Nov '13

02 Nov '13

Hello, In the code below, VS 2012 (target v110) underlines the macro name BOOST_MSM_EUML_EVENT_WITH_ATTRIBUTES in the last line with a wavy red line. Hovering a mouse over it shows a tooltip with error report: "Error: not a class or struct name" And if I recall correctly, the code does not compile. The error disappears in VS 2013 (v120). Though in VS 2013 (target v120), if I remove line "namespace msm = boost::msm;", the last line triggers an error again. This time with a different tooltip error report: "Error: name followed by '::' must be a class or namespace name." Am I using MSM incorrectly? Thanks, Vince // BEGIN euml.h #include <boost/msm/back/state_machine.hpp> #include <boost/msm/front/state_machine_def.hpp> #include <boost/msm/front/euml/euml.hpp> using namespace boost::msm::front::euml; namespace msm = boost::msm; BOOST_MSM_EUML_DECLARE_ATTRIBUTE(char*, charp_attr) BOOST_MSM_EUML_ATTRIBUTES((attributes_ << charp_attr), found_attrS) // next line gives error in VS 2012 (target v110), "Error: not a class or struct name". Not in VS 2013 (targ. v12). BOOST_MSM_EUML_EVENT_WITH_ATTRIBUTES(found, found_attrS) // END euml.h

3 3

[1.55.0] Release candidates available
by Marshall Clow 01 Nov '13

01 Nov '13

Release candidate files for 1.55.0 are available at http://boost.cowic.de/rc/ As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. This helps ensure the candidates build OK before we push them out to SourceForge. The files (and associated md5s) are: ba1ae723b8b4d1edeca684bb14b3213b *boost_1_55_0_rc1.tar.gz 66e01be2f328c556835c42be7b6d17d5 *boost_1_55_0_rc1.tar.bz2 925bb6c96082033687e5742b4e77af7b *boost_1_55_0_rc1.zip 830d61075ecf7d5ebf7c0843033393bf *boost_1_55_0_rc1.7z Thanks! -- The release managers

9 16

Connecting signals where one is a member
by Chris Stankevitz 01 Nov '13

01 Nov '13

Hello, "Connect 4" fails to compile in the code below on g++ 4.6.3. Why does "Connect 4" not work while "Connect 2" does work? Connect 4 and 2 are the same thing as far as I can see. Thank you, Chris #include <boost/signals2/signal.hpp> typedef boost::signals2::signal<void( )> TDSignalA; typedef boost::signals2::signal<void(int)> TDSignalB; TDSignalA SignalA1; TDSignalB SignalB1; struct TSItem { TDSignalA SignalA2; TDSignalB SignalB2; }; int main() { TSItem Item; // Connect 1 SignalA1.connect(Item.SignalA2); // Connect 2 SignalA1.connect(TDSignalA::slot_type(&TSItem::SignalA2, &Item)); // Connect 3 SignalB1.connect(Item.SignalB2); // Connect 4 //SignalB1.connect(TDSignalB::slot_type(&TSItem::SignalB2, &Item, _1)); return 0; }

2 2

VS2005 compiler error in swap() definition after including flat_map.hpp
by Фёдор Трушкин 01 Nov '13

01 Nov '13

Dear All, I encountered a strange problem recently. It's perfectly reproducable under VS2005 even with the latest boost 1_55 rc. Here's the minimal reproducable example: // ----- //#include <boost/container/flat_map.hpp> #include <boost/container/detail/config_begin.hpp> #include <boost/intrusive/detail/memory_util.hpp> #include <boost/container/detail/memory_util.hpp> void swap(); // ------ In VS2005 this innocent piece of code yields: // ------ error C2365: 'swap' : redefinition; previous definition was 'formerly unknown identifier' // ------ VS2010 and GCC 4.5.2 have no complaints. Looks like VS2005 compiler is entangled somehow by BOOST_INTRUSIVE_HAS_MEMBER magic. Actually, it's quite a headache that with VS2005 one can't introduce swap() after, say, flat_map is included. Should this incompatibility be regarded as a bug? Best regards, Fedor Trushkin

2 1

[python] Crash right after initialization after ubgrading from 1.48 to 1.54
by Richi Lists 31 Oct '13

31 Oct '13

Now I * downloaded the python 2.75 source * compiled python 2.75 * compiled boost 1.54 against python 2.75 * built our software against these new libs -> The behavior is still the same. ob_type of the first python object I create is 0xffffffff, and trying to access it results in an immediate crash. This only applies to the debug version. Release is fine. Also, the behavior is the same, if I link the boost debug build against python release or debug. Rgds Richard

1 0

[Iostreams] Problem to chain gzip filter with home-made one
by Christophe hugon 31 Oct '13

31 Oct '13

Hello everybody, I meeting a execution issue while using the gzip filter of the Boost.Iostreams, combined with a buffered home-made one. I would like to know what is wrong in my way to do it. Firstly, my filter is a general DualFilter. It uses an buffer (of 16 bytes) before the transformation and the put/return. The categories of my filter is closable and dual_use. You can find code details in the end of this mail. My problem is ([a/b] means for the separates case with the letter a and b): If I take the 6 possibilities for write and read: 1) io::filtering_[i/o]stream stm; 2) stm.push(io::gzip_[de/]compressor()); 3) stm.push(my_[Unt/T]ransFilter); at the moment to use the stm.[get/put] to read/write 1)-2) works perfectly 1)-3) works perfectly 1)-3)-2) works perfectly 1)-2)-3) Stay stuck (obviously it is the one I really need) In fact in the last case, the gzip filter give this infinite loop to the put of the TransFilter : 31 -117 8 0 0 0 0 0 0 31 -117 8 0 0... A similar case occur with the bzip filter (even if it is a bit longer loop). What do I do wrong ? Somebody can help me ? Thanks in advance Christophe PS: here a simplified implementation of my filter template<typename Source> int get(Source& src) { //at the very beginning or if the buffer are fully returned if (fcurrent_pos == fblkLength) { fcurrent_pos =0; FillThem (src); //fill&transform the buffers with the right number of src.get() fc=CheckNSolveBufferIsEnd (src); //eventually prepare read the suffix of the file } //The effective return if (fcurrent_pos < fUntrans.size ()) return (int)fUntrans[fcurrent_pos++]; else return fc; } template<typename Sink> bool put(Sink& dest, int c) { if (c==EOF || c ==boost::iostreams::WOULD_BLOCK) return false; if (fUntrans.size () < fblkLength - 1) { fUntrans.AddData((char*)(&c),1); return true; } fUntrans.AddData((char*)(&c),1); fenc->TransformThis (fUntrans, fTrans, fKey); for (int i=0; i<fblkLength; i++) { if (!boost::iostreams::put(dest, (int)fTrans[i])) return false; } return true; } template<typename Sink> bool close (Sink &dest, BOOST_IOS::openmode m) { if (fFlushed) return true; PrepareSuffix (); for (int i=0; i< fblkLength*2; //suffix length i++) { if (!boost::iostreams::put(dest, (int)fTrans[i])) return false; } return true; }

1 0

BOOST ASIO: Having successful READ from the SERVER ..??
by Rahul Mathur 31 Oct '13

31 Oct '13

All, Initially after having done successful CONNECT with the server, sending successful LOGON message and finally KEEP ALIVE status, I tried to read from the server as - -- boost::asio::streambuf data; std::size_t length = boost::asio::read(socket, data, boost::asio::transfer_at_least(socket.available())); -- but was able to partially receive response from remote server which I don't think was completely successful, so to have COMPLETE RESPONSE from the server, tried with below modification - -- boost::system::error_code ec; boost::asio::streambuf data; std::size_t length = boost::asio::read(socket, data, boost::asio::transfer_all(), ec); --- but this modification doesn't work. Any clue what should be the proper way? Thanks!!

2 1

SIGSEGV when removing Ethernet/Serial Port cables
by Ulf Samuelsson 30 Oct '13

30 Oct '13

Have a boost enable application which communicated over USB serial ports and UDP If the cables are removed, the library fires off SIGSEGV signals. I am trying to catch exceptions but neither } catch (boost::system::system_error &e) { } catch (std::exception &e) { seems to work, and a SIGSEGV signal is sent when the port->get_io_service().reset(); statement is executed. How can I handle the problem, that the USB serial cable is removed? I know I can test for the existence of /dev/ttyUSBx in the file system or /sys/class/tty/ttyUSBx" I know I can write a SIGSEGV handler, but would like to know if there is any exception I can catch instead. Have the same problem when the Ethernet Cable is removed. How handle this? // Serial Port Read. // Reads a character or times out bool SerialPort::read_char(unsigned char& val) { val = c = '\0'; try { // After a timeout & cancel it seems we need // to do a reset for subsequent reads to work. port->get_io_service().reset(); // Asynchronously read 1 character. async_read(*port, buffer(&c, 1), boost::bind(&SerialPort::read_complete, this, placeholders::error, placeholders::bytes_transferred)); // Setup a deadline time to implement our timeout. timer->expires_from_now(boost::posix_time::milliseconds(1)); timer->async_wait(boost::bind(&SerialPort::time_out, this, placeholders::error)); // This will block until a character is read // or until the it is cancelled. port->get_io_service().run(); if (!read_error) { val = c; } else { val = 0; // Timeout } } catch (boost::system::system_error &e) { val = 2; DebugPort.WriteLine("Serial Port System Error", RED); return false; } catch (std::exception &e) { val = 1; DebugPort.WriteLine("Serial Port General Error", RED); return false; } return !read_error; } // Network port open bool UdpClient::Open(void) { udp::resolver resolver(io_service); udp::resolver::query query(udp::v4(), ipAddress, Port); try { Endpoint = *resolver.resolve(query); } catch (boost::system::system_error &e) { // We might not have a network connection return false; } if (!CreateSocket()) { return false; } if (!OpenSocket()) { return false; } init = true; return true; } Best Regards Ulf Samuelsson

2 1

Looking for official .m4 script
by Yaroslav Panych 30 Oct '13

30 Oct '13

HI Looking for official .m4 script to include it into distribution package in order to use its benefits while configuring/build software. Yes, I know about Tsuna's boost.m4 library but I never heard it was approved by Boost officials. Regards

2 1

[graph] ambiguity moving from 1.48 to 1.54
by Richi Lists 30 Oct '13

30 Oct '13

Hi, I'm in the process of upgrading from boost 1.48 to 1.54. We're using MSVC10. Most stuff that comes up is easy to fix, but this one gives me headaches: ...boost\boost_1_54_0\boost/pending/property.hpp(108): error C2752: 'boost::lookup_one_property_internal<PList,PropName>' : more than one partial specialization matches the template argument list with [ PList=boost::property<boost::edge_bundle_t,EdgeData>, PropName=boost::edge_bundle_t ] ...boost\boost_1_54_0\boost/pending/property.hpp(114): could be 'boost::lookup_one_property_internal<boost::property<Tag,T,Base>,Tag>' ...boost\boost_1_54_0\boost/pending/property.hpp(108): or 'boost::lookup_one_property_internal<boost::property<Tag,T,Base>,boost::edge_bundle_t>' ...boost\boost_1_54_0\boost/pending/property.hpp(108): or 'boost::lookup_one_property_internal<T,boost::edge_bundle_t>' ...boost\boost_1_54_0\boost/pending/property.hpp(158) : see reference to class template instantiation 'boost::lookup_one_property_internal<PList,PropName>' being compiled with [ PList=boost::property<boost::edge_index_t,int,boost::property<boost::edge_bundle_t,EdgeData>>, PropName=boost::edge_bundle_t ] ...boost\boost_1_54_0\boost/graph/detail/adjacency_list.hpp(1505) : see reference to class template instantiation 'boost::lookup_one_property<T,Tag>' being compiled with [ T=boost::property<boost::edge_index_t,int,boost::property<boost::edge_bundle_t,EdgeData>>, Tag=boost::edge_bundle_t ] ...boost\boost_1_54_0\boost/graph/detail/adjacency_list.hpp(2028) : see reference to class template instantiation 'boost::adj_list_helper<Config,Base>' being compiled with [ Config=boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps>,boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps,boost::no_property,boost::listS>::config, Base=boost::undirected_graph_helper<boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps>,boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps,boost::no_property,boost::listS>::config> ] ...boost\boost_1_54_0\boost/graph/adjacency_list.hpp(267) : see reference to class template instantiation 'boost::vec_adj_list_impl<Graph,Config,Base>' being compiled with [ Graph=boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps>, Config=boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps>,boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps,boost::no_property,boost::listS>::config, Base=boost::undirected_graph_helper<boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps>,boost::vecS,boost::vecS,boost::undirectedS,VertexProps,EdgeProps,boost::no_property,boost::listS>::config> ] ..\graph_problem.cpp(52) : see reference to class template instantiation 'boost::adjacency_list<OutEdgeListS,VertexListS,DirectedS,VertexProperty,EdgeProperty>' being compiled with [ OutEdgeListS=boost::vecS, VertexListS=boost::vecS, DirectedS=boost::undirectedS, VertexProperty=VertexProps, EdgeProperty=EdgeProps ] ...boost\boost_1_54_0\boost/graph/adjacency_list.hpp(374): error C2182: '[]' : illegal use of type 'void' The code to reproduce is here: // boost #include <boost/graph/adjacency_list.hpp> #include <boost/graph/subgraph.hpp> #include <boost/graph/graph_traits.hpp> class EDGE {}; ////////////////////////////////////////////////////////////////////////// /// graph's vertex data struct VertexData { /// c-tor VertexData() { pos[0] = 0.0; pos[1] = 0.0; pos[2] = 0.0; } VertexData(const double* _pos) { pos[0] = _pos[0]; pos[1] = _pos[1]; pos[2] = _pos[2]; } /// data double pos[3]; }; ////////////////////////////////////////////////////////////////////////// /// graph's edge data struct EdgeData { /// c-tor EdgeData() : pEdge(NULL) {} EdgeData(EDGE* _pEdge) : pEdge(_pEdge) {} /// comparison for equality bool operator==(const EdgeData& dst) const { return pEdge == dst.pEdge; } /// data EDGE* pEdge; }; ////////////////////////////////////////////////////////////////////////// /// types typedef VertexData VertexProps; ///< custom vertex properties typedef boost::property<boost::edge_index_t, int, boost::property<boost::edge_bundle_t, EdgeData> > EdgeProps; ///< custom edge properties typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, VertexProps, EdgeProps> Type; ///< custom graph type ////////////////////////////////////////////////////////////////////////// /// unary predicate for testing if edge has duplicates in graph struct CheckDuplicateEdge { CheckDuplicateEdge(const Type& _g) : g(_g) {} // check if this edge has duplicates bool operator()(const Type::edge_descriptor& e) const { // do something return false; } private: const Type& g; }; ////////////////////////////////////////////////////////////////////////// void RemoveDuplicateEdges(Type& g) { remove_edge_if(CheckDuplicateEdge(g), g); } ////////////////////////////////////////////////////////////////////////// void main() { std::cout << "hello graph"; } ////////////////////////////////////////////////////////////////////////// I have tried to find a solution, and have searched the internet for hours. So, hopefully anybody here saw something similar, and solved it already. Rgds Richard

2 3

[python] Crash right after initialization after ubgrading from 1.48 to 1.54
by Richi Lists 30 Oct '13

30 Oct '13

I upgraded from boost 1.48 to .154 and I thought I was done after all the compiler errors and unit tests were ironed out. But now when I start our application, it terminates immediately. This only happens with the debug build. The release build is fine. I verified that it properly links to boost-python-vc100-mt-gyd-1_54.lib and python27_d.lib The python version (2.73) is still the same that we used with boost 1.48. I tracked it down to here: Py_Initialize(); m_mainModule = boost::python::import(__main__); <-- crash here With the debugger I found out that the string object is invalid. More specifically, ob_type is 0xffffffff. So I added this exception which always throws now: Py_Initialize(); const boost::pathon::str someRandomString("someRandomString"); if(reinterpret_cast<void*>(0xffffffff) == someRandomString.ptr()->ob_type) throw std::runtime_error("Python problem"); What could be going on here? Rgds Richard

1 0

[Geometry] Compilation errors after moving to 1.55b1
by Szymon Gatner 29 Oct '13

29 Oct '13

Moving to 1.55b1 from 1.54 gives: Error 1 error C2976: 'boost::geometry::strategy::transform::translate_transformer' : too few template arguments offending line is: typedef strategy::transform::translate_transformer<Point, Point> Translate; Regards, Szymon Gatner

3 3

[Asio] Compilation errors after switching to 1.55 b1
by Szymon Gatner 29 Oct '13

29 Oct '13

I am getting very weird error after moving from 1.54 to 1.55b1: 2>C:\devel\boost_1_55_0b1\boost/asio/detail/impl/socket_ops.ipp(2224): error C2653: 'Windows' : is not a class or namespace name (..\..\lib\hexine.cpp) and many more in that file, then: 2>C:\devel\boost_1_55_0b1\boost/asio/detail/buffer_sequence_adapter.hpp(36): error C2653: 'Windows' : is not a class or namespace name (..\..\lib\hexine.cpp) Than, many errors later: 2>C:\devel\boost_1_55_0b1\boost/asio/detail/winrt_async_manager.hpp(62): error C2039: 'IAsyncAction' : is not a member of 'Windows::Foundation' (..\..\lib\hexine.cpp) This looks like C++/CLI implementation. I assume this is related to "Implemented a limited port to Windows Runtime. This support requires that the language extensions be enabled." Does it mean that switch from 1.54 to 1.55 requires changes in project settings? Visual Studio 2012 Update 3, Windows 7 Regards, Szymon Gatner

2 1

[date_time] Not built with Visual Studio 2013
by Szymon Gatner 29 Oct '13

29 Oct '13

Hi, I just built boost 1.55 beta1 with recently released VC2013 on Win7 and for some reason date-time library was not built. I didn't sepcify it when building (just hit b2 to get everything). Regards, Szymon Gatner

2 3

[Boost-users] {exception][boost::throw_exception][BOOST_NO_EXCEPTIONS] implications
by Jeff Flinn 28 Oct '13

28 Oct '13

The project I've joined [ab]uses BOOST_NO_EXCEPTIONS in 1.55b as a means to intercept exceptions thrown via boost::throw_exception() and translate them to the project's single exception type derived from std::exception, leaving me a bit queasy. That queasiness is reinforced by #ifdef BOOST_NO_EXCEPTIONS #error This header requires exception handling to be enabled. #endif in ...\boost_1_55_0b1\boost\exception\detail\exception_ptr.hpp. This implies that BOOST_NO_EXCEPTIONS is used for more that just allowing client code to supply it's own throw_exception. Does boost and/or C++ provide a better customization point to safely translate exceptions thrown by boost? (note: we're using vs2013, generally the latest gcc, and clang) Thanks, Jeff

2 1

Boost Iterator Adaptor, with a mutable member variable is optimized out incorrectly
by Jonas Hörsch 28 Oct '13

28 Oct '13

hello everyone, i am not sure if this is actually a question about boost usage. but in the attached code i'm stuck with the unlikely situation, that gcc optimizes away my code and produces garbage for -On (n>=1), while it works like intended with -O0. attached is the minimal code, with which i could reproduce the problem: on linux i686 g++ version 4.6.3 and x86_64 g++ version 4.7.2, using packaged boost_1_54_0 in both instances, i see the following: when i compile the code with optimization (-O1) % ./iterator_adaptor_weirdness -1219536795 -1219536795 and without (-O0) % ./iterator_adaptor_weirdness 4 2 is this a bug in gcc? is it wrong to use mutable variables in conjunction with iterator_adaptor? any insight is appreciated, jonas P.S.: I know, that this particular instance of the problem, might be better solved using a transform_iterator, but unfortunately that approach doesn't scale.

2 2

[Asio] Example of the "passing the buck" pattern
by Sorin Fetche 28 Oct '13

28 Oct '13

Hi all, Although the pattern of "passing the buck" has been mentioned in several places in the context of Boost.Asio, I didn't find any self-contained example that demonstrates it in a reusable manner. So, after going through all the information I could find, I tried to create such an example that demonstrates it using C++03.I would like to ask for feedback related to the attached sample code (its "Test Infrastructure" and "Test Code" sections) and double check that it does indeed depict what "passing the buck" means. For future reference I'm listing here the all the sources of information I could find related to the pattern of "passing the buck". it also turned out that a helper utility is needed in order to wrap boost::bind created handlers and have the wrapper integrate with the Asio customization points. - N3388 paper: Using Asio with C++11 http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3388.pdf Chapter 7 describes this strategy to develop efficient and generic composed operations by letting their caller decide via the provided completion handler how the intermediary handlers should interact with the Asio customization points. - Thinking Asynchronously: Designing Applications with Boost.Asio https://github.com/boostcon/2011_presentations/raw/master/mon/thinking_asyn… The "Managing Complexity" chapter references the "pass the buck" strategy with slides 113 and 114 showing invocation and allocation hooks that call the hooks of a nested handler. - The implementation of higher level functions from Boost.Asio like async_read or async_write. The problem with them being an example of the pattern is that they are using custom classes for the intermediary operation handlers instead of relying on boost::bind to build them on the fly. - Asio Samples project http://sourceforge.net/projects/asio-samples For example its handler wrapper: context_alloc_handler and its usage in the echo server implementation. Thank you, Sorin Fetche

1 0

Preprocessor Recursion
by Mitch Besser 27 Oct '13

27 Oct '13

I'm trying to create a 'C' macro that will define and initialize static data. For example: STATIC_CONST_STRUCT ( A, a, MEMBER_DATA(CONST_STR, a, "Hello, a") MEMBER_DATA(CONST_STR, b, "Hello, b") MEMBER_STRUCT ( C, c, MEMBER_DATA(CONST_STR, d, "Hello, d") MEMBER_DATA(CONST_INT, e, 1) ) ); Would cause the 'C' preprocessor to create: static const struct A { CONST_STR a; CONST_STR b; struct C { CONST_STR d; CONST_INT e; } c; } = {"Hello, a", "Hello, b", {"Hello, d", 1}}; If I could use C++, this would be easy, but I'm using 'C' and it would be very helpful to have the initialization along with the declaration. I can't quite figure out how to make this work. My macros stop expanding. I suspect the recursive nature of the problem having an arbitrarily deep nesting is why. If it helps, I do have a maximum depth for the nesting. I've tried reading the docs and learn more about recursion, but I can't seem to find a solution. I suspect I'm close. Here's what I have so far (not claiming this is a good solution, so feel free to suggest anything that would make this better): #define MEMBER_DATA_TAG 0 #define MEMBER_STRUCT_TAG 1 #define MEMBER_TAG(MEMBER) BOOST_PP_SEQ_ELEM(0, MEMBER) #define MEMBER_DATA_TYPE(MEMBER_DATA) BOOST_PP_SEQ_ELEM(1, MEMBER_DATA) #define MEMBER_DATA_NAME(MEMBER_DATA) BOOST_PP_SEQ_ELEM(2, MEMBER_DATA) #define MEMBER_DATA_VALUE(MEMBER_DATA) BOOST_PP_SEQ_ELEM(3, MEMBER_DATA) #define MEMBER_STRUCT_TYPE(MEMBER_STRUCT) BOOST_PP_SEQ_ELEM(1, MEMBER_STRUCT) #define MEMBER_STRUCT_NAME(MEMBER_STRUCT) BOOST_PP_SEQ_ELEM(2, MEMBER_STRUCT) #define MEMBER_STRUCT_MEMBER_SEQ(MEMBER_STRUCT) BOOST_PP_SEQ_ELEM(3, MEMBER_STRUCT) #define MEMBER_DATA(TYPE, NAME, VALUE) ((MEMBER_DATA_TAG)(TYPE)(NAME)(VALUE)) #define MEMBER_STRUCT(TYPE, NAME, MEMBER_SEQ) ((MEMBER_STRUCT_TAG)(TYPE)(NAME)(MEMBER_SEQ)) #define IS_MEMBER_STRUCT(MEMBER_SEQ_ELEM) BOOST_PP_EQUAL(MEMBER_TAG(MEMBER_SEQ_ELEM), MEMBER_STRUCT_TAG) #define MEMBER_STRUCT_DECLARE(TYPE, NAME, MEMBER_SEQ) \ struct TYPE \ { \ BOOST_PP_SEQ_FOR_EACH(MEMBER_ELEM_DECLARE, BOOST_PP_EMPTY(), MEMBER_SEQ) \ } NAME #define MEMBER_ELEM_DECLARE(_r, _data, MEMBER_SEQ_ELEM) \ BOOST_PP_IIF \ ( \ IS_MEMBER_STRUCT(MEMBER_SEQ_ELEM), \ MEMBER_STRUCT_DECLARE \ ( \ MEMBER_STRUCT_TYPE(MEMBER_SEQ_ELEM), \ MEMBER_STRUCT_NAME(MEMBER_SEQ_ELEM), \ MEMBER_STRUCT_MEMBER_SEQ(MEMBER_SEQ_ELEM) \ ), \ MEMBER_DATA_DECLARE \ ( \ MEMBER_DATA_TYPE(MEMBER_SEQ_ELEM), \ MEMBER_DATA_NAME(MEMBER_SEQ_ELEM), \ MEMBER_DATA_VALUE(MEMBER_SEQ_ELEM) \ ) \ ); #define MEMBER_DATA_DECLARE(TYPE, NAME, VALUE) TYPE NAME #define MEMBER_VALUE_INIT(MEMBER_SEQ) \ BOOST_PP_SEQ_FOR_EACH_I(MEMBER_VALUE_INIT_DECLARE, BOOST_PP_EMPTY(), MEMBER_SEQ); #define MEMBER_VALUE_INIT_DECLARE(_r, _data, i, MEMBER_SEQ_ELEM) \ BOOST_PP_COMMA_IF(i) \ BOOST_PP_IIF \ ( \ IS_MEMBER_STRUCT(MEMBER_SEQ_ELEM), \ {MEMBER_VALUE_INIT(MEMBER_SEQ_ELEM)}, \ MEMBER_DATA_VALUE(MEMBER_SEQ_ELEM) \ ) #define STATIC_CONST_STRUCT(TYPE, NAME, MEMBER_SEQ) \ static const MEMBER_STRUCT_DECLARE(TYPE, NAME, MEMBER_SEQ) = \ { \ MEMBER_VALUE_INIT(MEMBER_SEQ) \ } Thanks. -- "лось и белка"

2 1

[geometry] Difference problem using boost geometry in 1.47
by Macumber, Daniel 26 Oct '13

26 Oct '13

I am using boost geometry in 1.47 and am pretty happy with it. However, I am having a problem performing an intersection that I can't figure out how to solve. When I difference two geometries, I am sometimes left with a result that uses reverse winding to subtract a piece of the result rather than providing a "clean" polygon with winding in one direction only. I've posted an image here that demonstrates this: http://oi42.tinypic.com/2elfp0o.jpg I get the feeling that if I were to use the right models this might somehow be fixed? If not is there an algorithm that can clean up the result? Here is the code I am using: typedef boost::geometry::model::d2::point_xy<double> BoostPoint; typedef boost::geometry::model::polygon<BoostPoint> BoostPolygon; typedef boost::geometry::model::ring<BoostPoint> BoostRing; BoostRing facePolygon; BoostRing otherFacePolygon; std::vector<BoostPolygon> faceDifferenceResult; .... boost::geometry::difference(facePolygon, otherFacePolygon, faceDifferenceResult); Any ideas are much appreciated, thanks a lot, Dan

2 1

MFC ASSERT in dllinit.cpp line 703 when using Boost.Log
by Simon Martin 25 Oct '13

25 Oct '13

Hi, I receive an assertion, when I try to use Boost.Log in one of my DLLs. I have a tools.dll, which contains my logging facility and I tried to implement to logging stuff with Boost.Log. This tools.dll is referenced by another helper.dll and both DLLs are used in the application. However, when I start the application, I get the famous ASSERT. This happens with Boost 1.54 and Boost.Log as well as with Boost 1.48 and Boost.Log 1.1. I've digged through lots of mailing lists and old postings today. What I understood so far, there's an issue with _pRawDllMain pointer in Boost.Thread, some suggested commenting it out in #include <boost/thread/detail/tss_hooks.hpp>, but this leads to memory leaks? This thread http://lists.boost.org/threads-devel/2009/06/0476.php said it would be fixed after 1.40, but I don't know, if this has been done. Dynamic linking to Boost as suggested here http://stackoverflow.com/questions/5355931/adding-include-boost-thread-mute… did not help. Any hints, what I should check? Thanks Simon

1 0

Reading & Parsing an .ini input file using BOOST... ..!!
by Rahul Mathur 25 Oct '13

25 Oct '13

All, Need small help. I have an "input.ini" input file which contains sample values like – --- App=| 5000 | 5001 | 0 | | | | 1BYTE | --- Starting with word (viz. App), followed by equal sign, than data within pipes (|) and blank space between two pipes ( | | ). Anything only between two pipes is to be read. I am looking to parse this input file. After parsing, assign each data to struct member type and than send this complete struct as socket. I am looking to use Boost property tree (or the needed one) and finally the ASIO to send the complete filled struct as stream. I tried below code to read complete data and it worked but - --- #include <iostream> #include <boost/property_tree/ptree.hpp> #include <boost/property_tree/ini_parser.hpp> #include <boost/filesystem/fstream.hpp> int main() { boost::property_tree::ptree pt; boost::property_tree::ini_parser::read_ini("input.ini", pt); std::cout << pt.get<std::string>("App") << std::endl; } --- But, how to read between pipes? Any clue?

4 5

BOOST_INTERLOCKED_INCREMENT
by gast128 24 Oct '13

24 Oct '13

Hello all, we use these macro's to be more portable, but are these 'official' Boost functionality? they are defined in <boost/detail/interlocked.hpp> which made me doubt. Ofc better to use atomics in future, bit no time for that right now.

2 1

[1.55.0] Beta 1 Available
by Marshall Clow 24 Oct '13

24 Oct '13

Boost release 1.55.0 beta 1 is now available from SourceForge See http://sourceforge.net/projects/boost/files/boost/1.55.0.beta.1/ This release contains 1 new library: * Predef: This library defines a set of compiler, architecture, operating system, library, and other version numbers from the information it can gather of C, C++, Objective C, and Objective C++ predefined macros or those defined in generally available headers, from Rene Rivera. For details of what's in the release, see http://www.boost.org/users/history/version_1_55_0.html. Note that the links to files on this web page are for the final release - use the SourceForge link above to get the beta files. Please download the beta, give it a try, and report any problems you encounter. Thanks, -- The Boost Release Team

4 4

boost.org/users/license.html page out of date and misleading?
by John DiMatteo 23 Oct '13

23 Oct '13

http://www.boost.org/users/license.html says "Currently, some Boost libraries have their own licenses." Is this correct in stating that some Boost libraries don't use the Boost Software License? If so, what is an example of a Boost library that does not use the Boost Software License? Is there a definitive list of which libraries don't use the Boost Software License? I discussed this on the #boost irc channel today, and it was suggested that the license.html page is out of date, and that all of the Boost libraries have already been updated to use the Boost Software License. If this is indeed the case, can we please update the license.html page? Thanks

2 3

error compiling boost svn repo
by Freddy Martinez Garcia 23 Oct '13

23 Oct '13

hi to everybody... I have downloaded the boost svn repo and I'm trying to compile it, but I've the following error: gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.8/release/threading-multi/bzip2.o libs/iostreams/src/bzip2.cpp:20:56: fatal error: bzlib.h: No such file or directory #include "bzlib.h" // Julian Seward's "bzip.h" header. ^ compilation terminated. "g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fPIC -DBOOST_ALL_NO_LIB=1 -DBOOST_IOSTREAMS_DYN_LINK=1 -DBOOST_IOSTREAMS_USE_DEPRECATED -DNDEBUG -I"." -c -o "bin.v2/libs/iostreams/build/gcc-4.8/release/threading-multi/bzip2.o" "libs/iostreams/src/bzip2.cpp" ...failed gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.8/release/threading-multi/bzip2.o... ...skipped <pbin.v2/libs/iostreams/build/gcc-4.8/release/threading-multi>libboost_iostreams.so.1.55.0 for lack of <pbin.v2/libs/iostreams/build/gcc-4.8/release/threading-multi>bzip2.o... ...skipped <pstage/lib>libboost_iostreams.so.1.55.0 for lack of <pbin.v2/libs/iostreams/build/gcc-4.8/release/threading-multi>libboost_iostreams.so.1.55.0... ...skipped <pstage/lib>libboost_iostreams.so for lack of <pstage/lib>libboost_iostreams.so.1.55.0... gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi/bzip2.o libs/iostreams/src/bzip2.cpp:20:56: fatal error: bzlib.h: No such file or directory #include "bzlib.h" // Julian Seward's "bzip.h" header. ^ compilation terminated. "g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -DBOOST_ALL_NO_LIB=1 -DBOOST_IOSTREAMS_USE_DEPRECATED -DNDEBUG -I"." -c -o "bin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi/bzip2.o" "libs/iostreams/src/bzip2.cpp" ...failed gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi/bzip2.o... ...skipped <pbin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi>libboost_iostreams.a(clean) for lack of <pbin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi>bzip2.o... ...skipped <pbin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi>libboost_iostreams.a for lack of <pbin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi>bzip2.o... ...skipped <pstage/lib>libboost_iostreams.a for lack of <pbin.v2/libs/iostreams/build/gcc-4.8/release/link-static/threading-multi>libboost_iostreams.a... ...failed updating 2 targets... ...skipped 6 targets... I'm using ubuntu 13.10... somebody know what i'm i suppose to do ?? best regards Freddy -- ------- "El tamaño de tus logros depende del tamalo de tus metas." ------- Freddy Martinez Garcia Lic. en Ciencia de la Computación. Edad: 31 Años Nacido en: Santiago de Cuba Recide en: Buenos Aires. Capital Federal e-mails: * freddy311082(a)gmail.com * freddymg311082(a)hotmail.com

2 1

Mixing signals2 and asio mechanism failing
by ustulation 22 Oct '13

22 Oct '13

I've the following: <1> a single instance of io_service object with a program life-time and several threads calling it's run() method. io_service::work is given to it so that it never terminates (unless we stop it). <2> class A which has boost::signals2::signal connecting functions for callback. * async operations (eg., async_read_until, async_write etc) <3> class B which is derived from std::shared_from_this ; * has a composition of class A as std::unique_ptr which is instantiated in B's constructor ; <c> has functions/listeners which are registered with signals of class A (eg., signals2::connection connectionObj = uniqPtrA->someSig.connect([=]{shared_from_this_ptrB->listenerFuncOfB();}); <4> Another thread outside the thread-pool of <1> above which instantiates (and manages) class B: auto ptrB = std::make_shared(); //and further operations. The problem is when I need to destroy ptrB I can't. For instance, i call some method of class B on ptrB to clear all connections it has with class A and allow ptrB to go out of scope, but class B destructor is never called: {//local scope auto ptrB = std::make_shared(); ptrB->connectListenersToA(); /* eg auto self = shared_from_this(); connectionObj = uniqPtrA->someSig.connect([=]{self ->listenerFuncOfB();}); referring to <3> above */ //... do some operations ptrB->disconnectListenersWithA(); //eg connectionObj.disconnect(); referring to <3> above }//Scope ends I want ptrB to destroy the underlying pointer. The ptrB destructor is never called because signals2::connection::disconnect does not seem to wipe out the given slot so the shared_ptr reference of B remains with the signal in class A as anonymous functor (due to lambda in <3> above) containing it does not get destroyed. How do I achieve this? -- View this message in context: http://boost.2283326.n4.nabble.com/Mixing-signals2-and-asio-mechanism-faili… Sent from the Boost - Users mailing list archive at Nabble.com.

3 8

No success with VS2013 and Boost 1.55b1
by LeMay.Steve 22 Oct '13

22 Oct '13

Using the attached batch file (below) to make Boost 1.55 beta 1 - I did NOT have success building Boost 1.55b1 with the release version of VS2013. I was however on a different PC able to build Boost with successfully with this batch file using VS2012. Others have reported successful builds using VS2013 – am I missing something new? [BUILD_MSVS.BAT] @ECHO OFF CLS SET DRIVE=D: SET BOOSTVER=1_55_0b1 @PUSHD %DRIVE%\boost_%BOOSTVER% @IF NOT EXIST bjam.exe call bootstrap @IF NOT EXIST bjam.txt bjam --help > bjam.txt @IF NOT EXIST bjam_libs.txt bjam --show-libraries > bjam_libs.txt @IF NOT EXIST bjam_obscure_options.txt bjam --help-options > bjam_obscure_options.txt @IF EXIST msvs_build.log del msvs_build.log @ECHO ON @ECHO Building Boost libraries for Visual Studio @REM Static library b2 -a -q -j4 --prefix=%DRIVE%\boost --build-type=complete --build-dir=%DRIVE%\boostBuild_MSVS_%BOOSTVER% toolset=msvc --variant=release link=static threading=multi runtime-link=shared --without-python install >msvs_build.log 2>&1 @POPD [OUTPUT LOG - MUCH DELETED] compile-c-c++ D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\date_time\build\msvc-12.0\debug\link-static\threading-multi\gregorian\greg_month.obj greg_month.cpp D:\boost_1_55_0b1\boost/iterator/detail/facade_iterator_category.hpp(166) : error C2039: 'assert_not_arg' : is not a member of 'boost::mpl' D:\boost_1_55_0b1\boost/mpl/eval_if.hpp(41) : see reference to class template instantiation 'boost::detail::facade_iterator_category_impl<CategoryOrTraversal,ValueParam,Reference>' being compiled with [ CategoryOrTraversal=boost::forward_traversal_tag , ValueParam=std::basic_string<char,std::char_traits<char>,std::allocator<char>> , Reference=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & ] D:\boost_1_55_0b1\boost/iterator/detail/facade_iterator_category.hpp(193) : see reference to class template instantiation 'boost::mpl::eval_if<boost::detail::is_iterator_category<CategoryOrTraversal>,boost::mpl::identity<boost::forward_traversal_tag>,boost::detail::facade_iterator_category_impl<CategoryOrTraversal,ValueParam,Reference>>' being compiled with [ CategoryOrTraversal=boost::forward_traversal_tag , ValueParam=std::basic_string<char,std::char_traits<char>,std::allocator<char>> , Reference=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & ] D:\boost_1_55_0b1\boost/iterator/iterator_facade.hpp(104) : see reference to class template instantiation 'boost::detail::facade_iterator_category<CategoryOrTraversal,ValueParam,Reference>' being compiled with [ CategoryOrTraversal=boost::forward_traversal_tag , ValueParam=std::basic_string<char,std::char_traits<char>,std::allocator<char>> , Reference=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & ] D:\boost_1_55_0b1\boost/iterator/iterator_facade.hpp(620) : see reference to class template instantiation 'boost::detail::iterator_facade_types<Value,CategoryOrTraversal,Reference,Difference>' being compiled with [ Value=std::basic_string<char,std::char_traits<char>,std::allocator<char>> , CategoryOrTraversal=boost::forward_traversal_tag , Reference=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & , Difference=ptrdiff_t ] D:\boost_1_55_0b1\boost/token_iterator.hpp(40) : see reference to class template instantiation 'boost::iterator_facade<boost::token_iterator<TokenizerFunc,Iterator,Type>,Type,boost::forward_traversal_tag,const Type &,ptrdiff_t>' being compiled with [ TokenizerFunc=char_separator_type , Iterator=std::_String_const_iterator<std::_String_val<std::_Simple_types<char>>> , Type=std::basic_string<char,std::char_traits<char>,std::allocator<char>> ] D:\boost_1_55_0b1\boost/date_time/date_parsing.hpp(132) : see reference to class template instantiation 'boost::token_iterator<TokenizerFunc,Iterator,Type>' being compiled with [ TokenizerFunc=char_separator_type , Iterator=std::_String_const_iterator<std::_String_val<std::_Simple_types<char>>> , Type=std::basic_string<char,std::char_traits<char>,std::allocator<char>> ] D:\boost_1_55_0b1\boost/date_time/gregorian/parsers.hpp(30) : see reference to function template instantiation 'date_type boost::date_time::parse_date<boost::gregorian::date>(const std::string &,int)' being compiled with [ date_type=boost::gregorian::date ] D:\boost_1_55_0b1\boost/iterator/detail/facade_iterator_category.hpp(166) : error C3861: 'assert_not_arg': identifier not found call "C:\Program Files (x86)\microsoft visual studio 12.0\vc\vcvarsall.bat" x86 >nul cl /Zm800 -nologo @"D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\date_time\build\msvc-12.0\debug\link-static\threading-multi\gregorian\greg_month.obj.rsp" ...failed compile-c-c++ D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\date_time\build\msvc-12.0\debug\link-static\threading-multi\gregorian\greg_month.obj... ...skipped <pD:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\date_time\build\msvc-12.0\debug\link-static\threading-multi>libboost_date_time-vc120-mt-gd-1_55.lib for lack of <pD:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\date_time\build\msvc-12.0\debug\link-static\threading-multi>gregorian\greg_month.obj... compile-c-c++ D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\exception\build\msvc-12.0\debug\link-static\threading-multi\clone_current_exception_non_intrusive.obj clone_current_exception_non_intrusive.cpp compile-c-c++ D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\filesystem\build\msvc-12.0\debug\link-static\threading-multi\codecvt_error_category.obj codecvt_error_category.cpp compile-c-c++ D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\filesystem\build\msvc-12.0\debug\link-static\threading-multi\operations.obj operations.cpp D:\boost_1_55_0b1\boost/iterator/detail/facade_iterator_category.hpp(166) : error C2039: 'assert_not_arg' : is not a member of 'boost::mpl' D:\boost_1_55_0b1\boost/mpl/eval_if.hpp(41) : see reference to class template instantiation 'boost::detail::facade_iterator_category_impl<CategoryOrTraversal,ValueParam,Reference>' being compiled with [ CategoryOrTraversal=boost::bidirectional_traversal_tag , ValueParam=const boost::filesystem::path , Reference=const boost::filesystem::path & ] D:\boost_1_55_0b1\boost/iterator/detail/facade_iterator_category.hpp(193) : see reference to class template instantiation 'boost::mpl::eval_if<boost::detail::is_iterator_category<CategoryOrTraversal>,boost::mpl::identity<boost::bidirectional_traversal_tag>,boost::detail::facade_iterator_category_impl<CategoryOrTraversal,ValueParam,Reference>>' being compiled with [ CategoryOrTraversal=boost::bidirectional_traversal_tag , ValueParam=const boost::filesystem::path , Reference=const boost::filesystem::path & ] D:\boost_1_55_0b1\boost/iterator/iterator_facade.hpp(104) : see reference to class template instantiation 'boost::detail::facade_iterator_category<CategoryOrTraversal,ValueParam,Reference>' being compiled with [ CategoryOrTraversal=boost::bidirectional_traversal_tag , ValueParam=const boost::filesystem::path , Reference=const boost::filesystem::path & ] D:\boost_1_55_0b1\boost/iterator/iterator_facade.hpp(620) : see reference to class template instantiation 'boost::detail::iterator_facade_types<Value,CategoryOrTraversal,Reference,Difference>' being compiled with [ Value=const boost::filesystem::path , CategoryOrTraversal=boost::bidirectional_traversal_tag , Reference=const boost::filesystem::path & , Difference=ptrdiff_t ] D:\boost_1_55_0b1\boost/filesystem/path.hpp(574) : see reference to class template instantiation 'boost::iterator_facade<boost::filesystem::path::iterator,const boost::filesystem::path,boost::bidirectional_traversal_tag,Value &,ptrdiff_t>' being compiled with [ Value=const boost::filesystem::path ] D:\boost_1_55_0b1\boost/iterator/detail/facade_iterator_category.hpp(166) : error C3861: 'assert_not_arg': identifier not found call "C:\Program Files (x86)\microsoft visual studio 12.0\vc\vcvarsall.bat" x86 >nul cl /Zm800 -nologo @"D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\filesystem\build\msvc-12.0\debug\link-static\threading-multi\operations.obj.rsp" ...failed compile-c-c++ D:\boostBuild_MSVS_1_55_0b1\boost\bin.v2\libs\filesystem\build\msvc-12.0\debug\link-static\threading-multi\operations.obj... ...failed updating 2 targets... ...skipped 1 target... ...updated 6578 targets...

2 1

Does boost::unordered_map<> work with boost::container::scoped_adaptor?
by Jonathon Bell 22 Oct '13

22 Oct '13

*context *our code base uses boost 1.54 with GCC 4.4.7 on CentOS 6, compiling as C++98. we're interested in using an allocator with state with the standard containers, so are investigating the boost container library in boost 1.54, in particular, instantiating these containers with a boost::container::scoped_allocator_adaptor<MyArena> style argument. *questions* 1) i notice that boost::unordered_xxx<> is not part of the boost container library. does this mean that these classes are not aware of the C++11 allocator model? a casual inspection of the code suggests that this might be the case 2) if so, has anyone here tried to patch them, port them, or the like? 3) if not, can anyone here offer thoughts or advice on how i might attempt to do so myself? rgerads, Jonathon Bell Paradigm 4

1 0

[Locale] linking against static ICU library
by Stathis 22 Oct '13

22 Oct '13

Hi, Is there a problem with building Boost.Locale against the static ICU libraries? I have quickly looked through the respective Jamfile, but I don't see it being supported. Could anyone give me a hint or two on how to modify the Jamfile to link against static ICU (they are prefixed with "s", e.g. sicuXXX.lib) ? Any help or ideas would be greatly appreaciated. regards, stathis

1 0

[MPL] How to generate pre-generated header files for lists containing more than 50 entries?
by Klaus.Kempf＠industronic.de 22 Oct '13

22 Oct '13

Hello MPL experts, I want to code a state machine which has a reaction list containing more than 50 entries. I found here [http://svn.boost.org/svn/boost/trunk/libs/mpl/preprocessed/] some python scripts to generate header files for lists containing more than 50 entries. But I cannot manage to generate a single header file. Can someone please explain to me how to use these scripts? I also didn't find any help in boost documention. Command line messages of the related script were also not helpful for me: preprocess_list.py Usage: preprocess_list.py <mode> <boost_root> [<source_file>] Purpose: updates preprocessed version(s) of the header(s) in "boost\mpl\list\aux_\preprocessed" directory Example: the following command will re-generate and update all 'apply.hpp' headers: preprocess_list.py all f:\cvs\boost apply.cpp What is the meaning of [<source_file>] here? And how/where do I have to specify the count of list entries in order to generate the header files "list60.hpp", "list70.hpp" and so on? Thanks for any help you could provide. Regards, Klaus

1 0

String algorithm? Removing non-alphanumerics from a string
by Tim Burgess 22 Oct '13

22 Oct '13

Hi, Takeing an std::string as input, I need to return the same string with any characters not in the ranges "az", "AZ" and "09" being discarded. A colleague told me that a could use something in the string algorithm library, but I'm obviously not spotting what I need. I tried regex replace, but failed, as I'm not understanding regular expressions yet. Any and all suggestions would be gratefully received. Best wishes. Tim Burgess

3 3

thread: linux fedora .so built file under c++98 does not provide start_thread() symbol
by MM 21 Oct '13

21 Oct '13

hello, I am compiling my code with g++4.8.1 under c++11 mode, however the fedora's system provided boost thread lib has been compiled under c++98. Linking fails because of errors like: mainthread.cpp:(.text+0x2cf): undefined reference to `boost::thread::start_thread()' mainthread.cpp:(.text+0xcc9): undefined reference to `boost::thread::join()' looking at the provided shared object, nm -C -D /usr/lib64/libboost_thread-mt.so.1.53.0 |grep start_thread 000000000000ba80 T boost::thread::start_thread_noexcept(boost::thread_attributes const&) 000000000000ba00 T boost::thread::start_thread_noexcept() neither of which is start_thread() I've put an entry here https://bugzilla.redhat.com/show_bug.cgi?id=1021009 Is there a possible workaround? MM

2 5

ASIO receive and handle uploaded files
by Caroline Beltran 21 Oct '13

21 Oct '13

I hope that someone can give me a very general overview of what I would need to do order to create an ASIO application that handles uploaded files. At this time, I am uploading files via my web browser to a PHP script that handles files. >From what I've read so far, I am guessing that I would have to create an ASIO server that listens for incoming HTTP POST (multipart/form-data) and saves the message to a file on the server. Any additional information would be much appreciated as well as pointing me to a relevant ASIO example(s) that I should carefully look at. Thank you!

5 4

Migration from boost 1.49 to 1.54
by Sebastian Messerschmidt 21 Oct '13

21 Oct '13

Hi folks, We have a rather big project which we like to migrate from boost 1.49 to 1.54. I ran into several compile problems under Visual Studio 2010 SP1. The most annoying I was not able to solve yet is the following: We are using boost::serialization a lot and I now get the following error: <snip> error C2995: 'boost_132::shared_ptr<T> boost_132::dynamic_pointer_cast(const boost_132::shared_ptr<U> &)' : function template has already been defined </snip> I checked the sources but I don't understand why this broken with the new version. I removed all references to "shared_ptr_cast" and dynamic_ptr_cast in my code, but compilation still fails. Any ideas? cheers Sebastian

1 0

C++Now 2014: Call for Submissions
by Hartmut Kaiser 20 Oct '13

20 Oct '13

============================================== C++ Now Conference 2014 Aspen CO, USA, May 12-17, 2014, www.cppnow.org ============================================== Call for Submissions -------------------- We invite you to submit session proposals to the 2nd annual C++ Now Conference (Aspen CO, USA, May 12-17, 2014). Building upon the resounding success of C++ Now 2013 and five years of BoostCon, C++ Now 2014 will present leading speakers from the whole C++ community. The C++ Now Conference is dedicated to discussion and education about C++, an open and free language and standard. Our Conference will focus on discussion and education about open source software usage and developments in the C++ developer and user community. To reflect the breadth of the C++ and Boost communities, the conference includes sessions aimed at three constituencies: C++ and Boost end-users, hard-core Boost library and tool developers, and researchers pushing the boundaries of computation. The program fosters interaction and engagement within and across those groups, with an emphasis on hands-on, participatory sessions. As a multi-paradigm language, C++ is a melting pot where the most compelling ideas from other programming communities are blended in powerful ways. Historically, some of the most popular sessions at C++ Now have highlighted these concepts, from DSLs to functional programming to transactional memory and more. Bring your C#, Python, Ruby or Haskell influences to bear in an environment that will broaden their exposure. At C++ Now 2014 we would like to focus on the now established C++11 standard and the new, upcoming C++14 and how those standard are and will shape C++'s future. However, by no means this is intended to restrict the topics of proposals we hope to see. Any other topic related to C++ as outlined below is perfectly fine for submission. Important dates --------------- New proposal submissions due: December 8th, 2013. Proposals decisions sent (tentative program available): January 30th, 2014. Fully scheduled program available: February 24th, 2014. Best Presentation Awards ------------------------ We know how much effort it takes to prepare talks for our conference. For this reason we will award the best presentations in the following categories: Best Presentation, Best Short Presentation, Best Tutorial, and Best Workshop. The awards will be given based on the audience's voting. Each award will include the author's name listed on the cover of the C++ Now website for that year and a plaque containing all the C++ Now conference information. Session topics -------------- Topics of interest include, but are not restricted to, the following: * C++11/14 and how it changes life for users and library writers * General tutorial sessions on C++11/14, the C++11/14 Standards library, and one or more Boost libraries * Parallelism in the new C++11/14 standard * Parallel, distributed and GPGPU topics relating to C++ * In-depth sessions on using specific Boost libraries * Case studies on using Boost * Experts panels * Advanced sessions on implementation techniques used within Boost libraries * Development workshops to extend or enhance existing Boost libraries * Workshops on design process * Infrastructure workshops such as Build tools, Website, Testing * Concepts and Generic Programming * Hardware and infrastructure presentations focused on how libraries can make better use of the technology * Software development tools and their application to C++ and or Boost * Other topics likely to be of great interest to C++ users and developers Interactive and collaborative sessions are encouraged, as this is 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. Session formats --------------- Presentations Presentations focus on a practitioner's ideas and experience with anything relevant to C++11 or C++14, Boost and users. Panels Panels feature three or four people presenting their ideas and experiences relating to C++11 or C++14 and Boost's relevant, controversial, emerging, or unresolved issues. Panels may be conducted in several ways, such as comparative, analytic, or historic. Tutorials Tutorials are sessions at which instructors teach conference participants specific skills relevant to C++11 or C++14 and Boost. Workshops 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 These were introduced at BoostCon 2008, and were a great success. They are short (30 minute) sessions, focusing on tips on usage and design. In addition, we're looking to uncover the hidden design gems in Boost libraries. Tool Vendors Presentations We actively encourage tool vendors and ISP's to submit proposals for a special Tool Vendors Session Track aimed at products related to Boost and C++ (compilers, libraries, tools, etc.). Other formats may also be of interest. Don't hold back a proposal just because it doesn't fit into a pigeonhole. 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 three hour (i.e. half day), or six hour (i.e. full day) time slots. Please include: * The working title. * Type of session: presentation, panel, tutorial, workshop, authors corner, vendor track, other. * A paragraph or two describing the topic covered, suitable for the conference web site. * Proposed length: 10-20 minute short talks, 45 minutes, 90 minutes, half day, full day. * Alternate lengths, if you are willing to make adjustments: 10-20 minute short-talks, 45 minutes, 90 minutes, half-day, 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). Submission details ------------------ All submissions should be made through the EasyChair conference management system: http://www.easychair.org/conferences/?conf=cppnow2014. If you have not already registered at EasyChair, you will need to do so in order to submit your proposal. All submissions will go through a peer review process. Authors are invited (but are not required) to submit PDF versions of full papers of up to 10 pages in ACM conference proceedings format (see http://www.acm.org/sigs/publications/proceedings-templates) The full papers are not required unless you want them published in the proceedings. All accepted proposals will be made available in the Association for Computing Machinery (ACM) Digital Library (approval pending). Best papers, after further reviews, will be considered to be book chapters or journal articles in a renowned journal. The session materials go on the C++ Now website and will be available to attendees. For general information on the C++ Now 2014 paper submission or the scope of technical papers solicited; please refer to the conference website at www.cppnow.org. For any other questions about the submission process or paper format, please contact the Program Committee at cppnow2014(a)easychair.com. If you have any technical problems with EasyChair, please contact EasyChair for help. Note: Presenters must agree to grant a non-exclusive perpetual license to publish submitted materials, either electronically or in print, in any media related to C++ Now. Hartmut Kaiser, email: hartmut.kaiser(a)gmail.com (Program Committee Chair) Joel Falcou, email: joel.falcou(a)lri.fr (Program Committee Chair) Jon Kalb, email: dave(a)boostpro.com (Conference Chair) On behalf of the conference organizers

1 0

NT2 and Boost.SIMD beta 2 available
by Joel Falcou 18 Oct '13

18 Oct '13

This following releases updates NT2 and Boost.SIMD libraries.10 months had past and 176 Issues have been closed since last beta release and more than 2000 commits have been issued. Boost.SIMD is heading toward API stability. We want to tackle ons ome more compile time issues before going for an actual Boost Review. Special thanks to Tim Blenchmann and Domagoj Saric for their help and suggestions throughout this development. The release Changelog is here : https://github.com/MetaScale/nt2/releases The files can be download from : http://nt2.metascale.org/downloads/ The Documentation (in progress) is here : http://nt2.metascale.org/doc/html/index.html

4 6

[Voronoi] Trying to figure out proper direction of semi-infinite edges.
by Nicolay P 18 Oct '13

18 Oct '13

Hi, Trying to figure out how to use the Voronoi library in 1.54 Boost (Great stuff BTW, Thanks!) I am using the library to shatter a 2d convex polygon. So I need to generate polygons that are the results of clipping a voronoi cell against my convex poly. I am having hard time figuring out how to properly identify the direction of the semi-infinite edge. I know i can obtain the general direction of the infinite edge from the participating cell points, but I am not clear on how to distinguish between two possible directions in the semi-finite case. Any help would be much appreciated! Thanks! Nick.

1 0

Boost_1_54_0: boost::math::sph_bessel(n, x) crash at x=0 n>0
by JE Campagne 18 Oct '13

18 Oct '13

Dear developpers, I'am running Boost 1_54_0 on Scientific Linux slc-6.1, gcc-4.4.5, 64 bits machine. I face a problem with computation of spherical bessel function, although the problem seems well known here is a test program { int L; try { for(L=100;L<2010;L++) { boost::math::sph_bessel(L, 0.); } } catch (std::exception& sex) { cout << "Error j_"<<L<<"(0): "<< sex.what() << endl; } } And the output Error j_1755(0): Error in function boost::math::tgamma<e>(e): Result of tgamma is too large to represent. which tends to point out that at L=1755 the spherical bessel function get a problem once one ant to estimate at x=0. Of course, I know that j0(0) = 1 and for L>0 jL(0) = 0 but 1) I'm using a program which compute integral of product of bessel function and sometimes it needs to call the function at 0. So I would expect the BOOST library to be protected against that. Am I wrong? Best regards Jean-Eric

3 6

zlib question
by Robert Ramey 18 Oct '13

18 Oct '13

I'm using boost 1.55 - current release branch and now I want to link with libboost_zlib-vc90-mt-sgd-1_55.lib - but of course I don't have this. What is the most expedient way to address this? Robert Ramey

2 2

How to use multi index container?
by yuan 18 Oct '13

18 Oct '13

Hi, I try to use multi index container.I have one problem.Please help me.Thanks struct TOrder { char szDate[9]; //date type int nID; // order id int nProductID; //product id double fPrice;// int nVol;// //other member … } // The unique key of TOrder struct is szDdate and nID. How I can typedef the composite_key and the multi_index_container? Thank you for your help. Best regards. Yuan

2 1

Getting introduced to boost Python world, struck at hello_ext.pyd generation
by Raghu Kalyan Anna 18 Oct '13

18 Oct '13

Hi, Started to explore boost.Python to use C++ classes (.so or .dll) from Python world. I did these, (Windows) downloaded boost 1.54 and unpacked to C:\boost_1_54, Python 3.3 (earlier tried with Python 2.7) installed visuall C++ 2010 Express free edition From Visual studio command prompt, tested example.cpp and got the result. Now struck in getting hellp.cpp and to generate hello_ext.pyd. Looked at posts in stackoverflow and tried similar steps. Still the same. After unpacking boost1.54, I tried these <boost root> C:\boost_1_54>bootstrap.bat C:\boost_1_54>b2 Now it said add C:\boost_1_54 to compiler include path and add c:\boost_1_54\stage\lib to linker paths. Added these two paths to %PATH% environment variable thru advanced settings. Now ran bjam from hello tutorial C:\boost_1_54\libs\python\example\tutorial>bjam hello_ext.pyd is not generated And noted this "LINK : fatal error LNK1104: cannot open file 'boost_python-vc100-mt-gd-1_54.lib' call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.b at" x86 >nul link /NOLOGO /INCREMENTAL:NO /DLL /DEBUG /MACHINE:X86 /MANIFEST /subsystem:conso le /out:"bin\msvc-10.0\debug\hello_ext.pyd" /IMPLIB:"bin\msvc-10.0\debug\hello_e xt.lib" /LIBPATH:"C:\Python33\libs" @"bin\msvc-10.0\debug\hello_ext.pyd.rsp" if %ERRORLEVEL% NEQ 0 EXIT %ERRORLEVEL% ...failed msvc.link.dll bin\msvc-10.0\debug\hello_ext.pyd bin\msvc-10.0\debug\he llo_ext.lib bin\msvc-10.0\debug\hello_ext.pdb bin\msvc-10.0\debug\hello_ext.pdb. .. common.copy boost_python-vc100-gd-1_54.dll ..\..\..\..\bin.v2\libs\python\build\msvc-10.0\debug\boost_python-vc100-gd-1_54. dll 1 file(s) copied. ...skipped <p.>hello_ext.pyd for lack of <pbin\msvc-10.0\debug>hello_ext.pyd... common.mkdir bin\hello.test common.mkdir bin\hello.test\msvc-10.0 common.mkdir bin\hello.test\msvc-10.0\debug ...failed updating 3 targets... ...skipped 1 target... ...updated 41 targets..." If this is basic question, please answer. Or else please direct to appropriate Boost mailing list -- Regards, Ram **

1 0

Re: [Boost-users] Boost_1_54_0: boost::math::sph_bessel(n, x) crash at x=0 n>0
by campagne 17 Oct '13

17 Oct '13

Thanks That's true that for x close to zero but positive there are also problems to the use of power series close to 0 is certainly the best thing to do. I am astonished that this not yet used. Jean Eric Envoyé depuis un mobile Samsung -------- Message d'origine -------- De : John Maddock <john(a)johnmaddock.co.uk> Date : A : boost-users(a)lists.boost.org Objet : Re: [Boost-users] Boost_1_54_0: boost::math::sph_bessel(n, x) crash at x=0 n>0 > I'am running Boost 1_54_0 on Scientific Linux slc-6.1, gcc-4.4.5, 64 > bits machine. > > I face a problem with computation of spherical bessel function, although > the problem seems well known here > is a test program Not well known to me - there are a number of fixes to the (cyclic) Bessel functions due out with 1.55, but I'm afraid this isn't one of them. BTW the issue effects all x < 1, not just x == 0. Here's the patch I'm about to commit to SVN: Index: boost/math/special_functions/bessel.hpp =================================================================== --- boost/math/special_functions/bessel.hpp (revision 86329) +++ boost/math/special_functions/bessel.hpp (working copy) @@ -48,7 +48,16 @@ { BOOST_MATH_STD_USING mult = x / 2; - term = pow(mult, T(v)) / boost::math::tgamma(v+1+T(0.5f), Policy()); + if(v + 3 > max_factorial<T>::value) + { + // term = v * log(mult) - boost::math::lgamma(v+1+T(0.5f), Policy()); + // term = exp(term); + // Denominator increases faster than numerator each time v increases by one, + // so if tgamma would overflow then the result is neceesarily zero. + term = 0; + } + else + term = pow(mult, T(v)) / boost::math::tgamma(v+1+T(0.5f), Policy()); mult *= -mult; } T operator()() @@ -142,6 +151,11 @@ if(n == 0) return boost::math::sinc_pi(x, pol); // + // Special case for x == 0: + // + if(x == 0) + return 0; + // // When x is small we may end up with 0/0, use series evaluation // instead, especially as it converges rapidly: // Index: libs/math/test/test_bessel_j.hpp =================================================================== --- libs/math/test/test_bessel_j.hpp (revision 86329) +++ libs/math/test/test_bessel_j.hpp (working copy) @@ -262,6 +262,13 @@ do_test_sph_bessel_j<T>(sph_bessel_data, name, "Bessel j: Random Data"); // + // Some special cases: + // + BOOST_CHECK_EQUAL(boost::math::sph_bessel(0, T(0)), T(1)); + BOOST_CHECK_EQUAL(boost::math::sph_bessel(1, T(0)), T(0)); + BOOST_CHECK_EQUAL(boost::math::sph_bessel(100000, T(0)), T(0)); + + // // Special cases that are errors: // BOOST_CHECK_THROW(boost::math::cyl_bessel_j(T(-2.5), T(0)), std::domain_error); HTH, John. _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

1 0

[serialization] customizing save/load for a type (pointer)
by Mathieu Champlon 17 Oct '13

17 Oct '13

Hi, I'm using Boost.Serialization on a project where part of the data is not serialized and then loaded separately when unserializing. For instance a class MyThing can have a member data MyThingData* which described some "static" data. There is an application which edits these data and saves them on file for the main application to use latter on. When serializing MyThing we customize save/load in order to serialize MyThingData as a UID (MyThingData has a GetId member function). Upon unserialization the proper MyThingData instance is searched for based on the UID read from the archive. This works OK but is a bit tedious because with class MyThing { ... MyThingData* data_; }; instead of simply doing template< typename Archive > void serialize( Archive& ar, const unsigned int ) { ar & data_; } we have to do something like BOOST_SERIALIZATION_SPLIT_MEMBER() template< typename Archive > void load( Archive& ar, const unsigned int ) { int id; ar >> id; data_ = FindData( id ); // not very important how it is actually retrieved } template< typename Archive > void save( Archive& ar, const unsigned int ) const { ar << data_->GetId(); } Moreover things get even more complicated when serializing for instance a std::vector< MyThingData* > ... So I'm looking for a way to customize the serialization of MyThingData*. Of course I could wrap MyThingData* in a simple object to encapsulate save/load but they're everywhere and the code base is quite massive so this would require a lot of changes. Any idea how I could achieve this ? Thank you ! Regards, MAT.

1 0

bug in boost::date_time::time_facet?
by Jakub Zytka 16 Oct '13

16 Oct '13

Hi all I've run into a problem with *_facet from boost::date_time when compiling for windows and I'm pretty convinced it is a bug in boost (tested 1.49 and 1.54). However, since gcc makes a successful attempt not to trigger it, and I'm not exactly an expert on windows formats/linkers/etc I'd like to have second opinion before I fill a ticket. So, here we go: Consider following code: ------------- setFacet.h -------------------------- #include <iostream> __declspec(dllexport) void setFacet(std::ostream &); -------------- setFacet.cpp ----------------------- #include <boost/date_time/posix_time/posix_time.hpp> #include <locale> #include "setFacet.h" __declspec(dllexport) void setFacet(std::ostream & os) { boost::posix_time::time_facet * dateFormat =new boost::posix_time::time_facet("%Y-%m"); os.imbue(std::locale(os.getloc(), dateFormat)); } ------------------- test.cpp -------------------------- #include <boost/date_time/posix_time/posix_time.hpp> #include <iostream> #include "setFacet.h" using namespace std; int main() { std::string ts("20020131T235959"); boost::posix_time::ptime t(boost::posix_time::from_iso_string(ts)); cerr << t << endl; setFacet(cerr); cerr << t << endl; return 0; } ------------------------------------------------------- The expected result is that facet with "%Y-%m" format is imbued to cerr after calling "setFacet" function and that second print uses specified format. Now, suppose we built it so that we have setFacet.dll exporting function setFacet, and test.exe is linked against this dll. In such setting the code works under linux (gcc 4.1, 4.7), but it doesn't work under mingw-w64 4.6.4 or msvc10 - default format is used both times: linux: 2002-Jan-31 23:59:59 2002-01 windows: 2002-Jan-31 23:59:59 2002-Jan-31 23:59:59 Why? Well, lets look at operator<< for ptime. It does one interesting comparison: if (std::has_facet<custom_ptime_facet>(os.getloc())) this comparison gives different results under linux and windows. The key is static member "id" of a facet class. It is declared in boost/date_time/time_facet.hpp and it is used by has_facet to give answer whether locale has facet for the given class. Since this header is included twice - once in dll and once in exe there are two storages for id of the same facet class. In gcc 4.1 appropriate symbols are weak objects. Apparently only one is selected as the proper one by the linker and used universally. In gcc 4.7 it is even better. Appropriate symbols are "unique global symbol" which explicitly means there should be only one instance in whole process. In mingw both these storages are used independently and the same class (boost::posix_time::time_facet) has different id in dll (in setFacet function) and different in exe file (in operator<<). This is why operator<< believes locale has no facet for posix_time. At this point I was suspecting some incompatibility between windows' linker and mingw's libstdc++ implementation (regarding std::locale::id initialization) However, under msvc10 it doesn't work either, with msvc library. I believe it is a bug in boost, even if some deficiency in mingw/msvc/windows is involved. Also, let me confess I'm far from having learned boost docs by heart. If there is some big red sign somewhere telling I must link statically if using facets from boost::date_time have mercy on me. command lines used to build example: gcc (just get rid of these dllspecs): g++ -fPIC -shared -o libsetFacet.so setFacet.cpp g++ -L. -lsetFacet -Wl,--rpath=. -o test test.cpp mingw: x86_64-w64-mingw32-g++ -isystem pathToBoostIncludes -shared -o libsetFacet.dll -m32 -Wl,--enable-runtime-pseudo-reloc-v2 -Wl,--out-implib,libsetFacet.lib setFacet.cpp x86_64-w64-mingw32-g++ pathToBoostIncludes -o test.exe -m32 -Wl,--enable-runtime-pseudo-reloc-v2 -L. -lsetFacet test.cpp msvc10: cl.exe /I"pathToBoostIncludes" /LD set.cpp /EHsc /link /out:setFacet.dll /LIBPATH:"pathToBoostLibs" cl.exe /I"pathToBoostIncludes" /EHsc setFacet.lib test.cpp /link /LIBPATH:"pathToBoostLibs" regards, Jakub Zytka

1 0

Can't get boost version 1.54.0 to compile (Debian Linux)
by Ban Hammer 16 Oct '13

16 Oct '13

Hello. I'm quite new, and I've been needing Boost for something else I'm trying to compile... I've been trying to compile Boost, but it's giving me errors. Unfortunately, I can't use Debian's apt-get to get Boost, because I need version 1.5 or greater, and apt-get (for this version of Debian) only gets 1.49.0. I've put some feedback it gave me below. I've already run ./b2 (no arguments) before, so that's where the found targets are coming from. I'm not sure why I'm getting these errors...A whole bunch of header files are reported missing. I tried re-downloading Boost, and using a different format (tar.bz2 instead of tar.bz), but it still does the same thing. Building the Boost C++ Libraries. Performing configuration checks - 32-bit : yes (cached) - arm : no (cached) - mips1 : no (cached) - power : no (cached) - sparc : no (cached) - x86 : yes (cached) error: No best alternative for libs/coroutine/build/allocator_sources next alternative: required properties: <link>static <target-os>windows <threading>multi not matched next alternative: required properties: <link>static <segmented-stacks>on <threading>multi not matched next alternative: required properties: <link>static <threading>multi not matched - has_icu builds : yes (cached) warning: Graph library does not contain MPI-based parallel components. note: to enable them, add "using mpi ;" to your user-config.jam - zlib : yes (cached) - iconv (libc) : yes (cached) - icu : yes (cached) - compiler-supports-ssse3 : yes (cached) - compiler-supports-avx2 : yes (cached) - gcc visibility : yes (cached) - long double support : yes (cached) warning: skipping optional Message Passing Interface (MPI) library. note: to enable MPI support, add "using mpi ;" to user-config.jam. note: to suppress this message, pass "--without-mpi" to bjam. note: otherwise, you can safely ignore this message. - zlib : yes (cached) Component configuration: (All are building) ...patience... ...patience... ...patience... ...patience... ...patience... ...found 11439 targets... ...updating 70 targets... gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.7/release/threading-multi/bzip2.o libs/iostreams/src/bzip2.cpp:20:56: fatal error: bzlib.h: No such file or directory compilation terminated. "g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fPIC -DBOOST_ALL_NO_LIB=1 -DBOOST_IOSTREAMS_DYN_LINK=1 -DBOOST_IOSTREAMS_USE_DEPRECATED -DNDEBUG -I"." -c -o "bin.v2/libs/iostreams/build/gcc-4.7/release/threading-multi/bzip2.o" "libs/iostreams/src/bzip2.cpp" ...failed gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.7/release/threading-multi/bzip2.o... ...skipped <pbin.v2/libs/iostreams/build/gcc-4.7/release/threading-multi>libboost_iostreams.so.1.54.0 for lack of <pbin.v2/libs/iostreams/build/gcc-4.7/release/threading-multi>bzip2.o... ...skipped <pstage/lib>libboost_iostreams.so.1.54.0 for lack of <pbin.v2/libs/iostreams/build/gcc-4.7/release/threading-multi>libboost_iostreams.so.1.54.0... ...skipped <pstage/lib>libboost_iostreams.so for lack of <pstage/lib>libboost_iostreams.so.1.54.0... gcc.compile.c++ bin.v2/libs/python/build/gcc-4.7/release/threading-multi/numeric.o In file included from ./boost/python/detail/prefix.hpp:13:0, from ./boost/python/numeric.hpp:8, from libs/python/src/numeric.cpp:6: ./boost/python/detail/wrap_python.hpp:75:24: fatal error: patchlevel.h: No such file or directory compilation terminated. ...failed gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.7/release/link-static/threading-multi/bzip2.o... ...skipped <pbin.v2/libs/iostreams/build/gcc-4.7/release/link-static/threading-multi>libboost_iostreams.a(clean) for lack of <pbin.v2/libs/iostreams/build/gcc-4.7/release/link-static/threading-multi>bzip2.o... ...skipped <pbin.v2/libs/iostreams/build/gcc-4.7/release/link-static/threading-multi>libboost_iostreams.a for lack of <pbin.v2/libs/iostreams/build/gcc-4.7/release/link-static/threading-multi>bzip2.o... ...skipped <pstage/lib>libboost_iostreams.a for lack of <pbin.v2/libs/iostreams/build/gcc-4.7/release/link-static/threading-multi>libboost_iostreams.a... gcc.compile.c++ bin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi/numeric.o In file included from ./boost/python/detail/prefix.hpp:13:0, from ./boost/python/numeric.hpp:8, from libs/python/src/numeric.cpp:6: ./boost/python/detail/wrap_python.hpp:75:24: fatal error: patchlevel.h: No such file or directory compilation terminated. (From here on, I got a lot of errors that look like these ones.) "g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -DBOOST_ALL_NO_LIB=1 -DBOOST_PYTHON_SOURCE -DBOOST_PYTHON_STATIC_LIB -DNDEBUG -I"." -I"/usr/include/python2.7" -c -o "bin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi/object/function_doc_signature.o" "libs/python/src/object/function_doc_signature.cpp" ...failed gcc.compile.c++ bin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi/object/function_doc_signature.o... ...skipped <pbin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi>libboost_python.a(clean) for lack of <pbin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi>numeric.o... ...skipped <pbin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi>libboost_python.a for lack of <pbin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi>numeric.o... ...skipped <pstage/lib>libboost_python.a for lack of <pbin.v2/libs/python/build/gcc-4.7/release/link-static/threading-multi>libboost_python.a... ...failed updating 58 targets... ...skipped 12 targets...

2 1

[interprocess] Reading huge files
by Sensei 16 Oct '13

16 Oct '13

Dear all, I am new to boost memory mapping, so this question might look simplistic. I need to read huge amounts of data (for instance, a 20GB file), and since memory mapping is quite fast, I was going to use it. However, I don't know what it would be faster when, due to memory constraints, I need to partition the file into regions. Moreover, I should treat the file as a string (I need to perform string operations). What I'm trying now is just to read the entire file: boost::interprocess::file_mapping mmap(input_filename.c_str(), boost::interprocess::read_only); boost::interprocess::mapped_region map(mmap, boost::interprocess::read_only); std::size_t l = map.get_size(), tot_read = 0; void *ptr = map.get_address(); while (tot_read < l) { register std::size_t x = std::min(l - tot_read, static_cast<std::size_t>(prealloc)); std::copy_n(static_cast<char*>(ptr) + tot_read, x, line.begin()); // Do something here... tot_read += x; } So, when the file is huge, do I need to create a mapped_region inside the loop? I didn't see anywhere in the documentation the possibility to move the mapped region. Another side-question, if you don't mind. I'm not sure that what I'm doing is efficient, especially the need to copy from the region to a string. If you have suggestions, I'm more than happy to hear these. Thanks & Cheers!

4 6

[random] Missing Advapi32.lib
by Juan Carlos Franzoy 15 Oct '13

15 Oct '13

Hello. I am relatively new to boost. I am trying to compile boost-1.52 in a windows server 2008R2 using visual studio 2012 express. I got an error linking random dll: random_device.obj : error LNK2019: unresolved external symbol __imp__CryptAcquireContextA@20 referenced in function "public: __thiscall boost::random::random_device::impl::impl(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0impl@random_device@random@boost@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) The same error repeats for 'CryptReleaseContext', 'CryptGenRandom' and 'CryptEnumProvidersA'. The problem does not happend if I add '<toolset>msvc:<linkflags>advapi32.lib' to the requirements in random/build/Jamfile.v2. Anyone has seen this before? -- Juan Carlos Franzoy Licenciado en Sistemas

1 0

[Boost.MPI] segfault while accessing irecv request
by Jiří Vyskočil 15 Oct '13

15 Oct '13

I need to implement non-blocking communication in my application. I am getting segfault when calling wait() on my irecv requests: Program received signal SIGSEGV, Segmentation fault. 0x00007ffff7903a69 in boost::archive::detail::basic_iarchive_impl::load_preamble (this=0x110b590, ar=..., co=...) at libs/serialization/src/basic_iarchive.cpp:319 (gdb) bt #0 0x00007ffff7903a69 in boost::archive::detail::basic_iarchive_impl::load_preamble (this=0x110b590, ar=..., co=...) at libs/serialization/src/basic_iarchive.cpp:319 #1 0x00007ffff7904c52 in boost::archive::detail::basic_iarchive_impl::load_pointer (this=0x110b590, ar=..., t=@0x7fffffffd348: 0x2, bpis_ptr=0x0, bpis_ptr@entry=0x950a50 <boost::serialization::singleton<boost::archive::detail::pointer_iserializer<boost::mpi::packed_iarchive, std::vector<double, std::allocator<double> > > >::get_instance()::t>, finder=finder@entry=0x44d5c0 <boost::archive::detail::load_pointer_type<boost::mpi::packed_iarchive>::find(boost::serialization::extended_type_info const&)>) at libs/serialization/src/basic_iarchive.cpp:446 #2 0x00007ffff79042e8 in boost::archive::detail::basic_iarchive::load_pointer (this=this@entry=0x110b3b0, t=@0x7fffffffd348: 0x2, bpis_ptr=bpis_ptr@entry=0x950a50 <boost::serialization::singleton<boost::archive::detail::pointer_iserializer<boost::mpi::packed_iarchive, std::vector<double, std::allocator<double> > > >::get_instance()::t>, finder=finder@entry=0x44d5c0 <boost::archive::detail::load_pointer_type<boost::mpi::packed_iarchive>::find(boost::serialization::extended_type_info const&)>) at libs/serialization/src/basic_iarchive.cpp:550 #3 0x0000000000451f72 in boost::archive::detail::load_pointer_type<boost::mpi::packed_iarchive>::invoke<std::vector<double, std::allocator<double> >*> (ar=..., t=@0x7fffffffd348: 0x2) at /usr/include/boost/archive/detail/iserializer.hpp:524 #4 0x00000000004521e8 in load<boost::mpi::packed_iarchive, std::vector<double>*> (t=<optimized out>, ar=...) at /usr/include/boost/archive/detail/iserializer.hpp:592 #5 load_override<std::vector<double>*> (t=<optimized out>, this=0x110b3b0) at /usr/include/boost/archive/detail/common_iarchive.hpp:66 #6 load_override<std::vector<double>*> (version=0, x=<optimized out>, this=0x110b3b0) at /usr/include/boost/mpi/packed_iarchive.hpp:101 #7 load_override<std::vector<double>*> (version=0, x=<optimized out>, this=0x110b3b0) at /usr/include/boost/mpi/packed_iarchive.hpp:118 #8 operator>><std::vector<double>*> (t=<optimized out>, this=0x110b3b0) at /usr/include/boost/archive/detail/interface_iarchive.hpp:60 #9 deserialize (stat=..., this=0x110b390) at /usr/include/boost/mpi/communicator.hpp:1335 #10 boost::mpi::request::handle_serialized_irecv<std::vector<double, std::allocator<double> >*> (self=0x11acf30, action=<optimized out>) at /usr/include/boost/mpi/communicator.hpp:1457 #11 0x00007ffff7b5663f in boost::mpi::request::test (this=this@entry=0x11acf30) at libs/mpi/src/request.cpp:66 #12 0x000000000045052d in boost::mpi::wait_all<__gnu_cxx::__normal_iterator<boost::mpi::request*, std::vector<boost::mpi::request, std::allocator<boost::mpi::request> > > > (first=..., last=...) at /usr/include/boost/mpi/nonblocking.hpp:262 #13 0x000000000044be38 in opice::Communicator::waitall_recv (this=0x9a76c0) at /media/data/prog/workspace/opice/src/communicator.cpp:257 #14 0x0000000000424c14 in opice::Boundary::set_J (this=0xbd2b40) at /media/data/prog/workspace/opice/src/boundary.cpp:423 #15 0x00000000004354a6 in opice::Experiment::run (this=this@entry=0x99d850) at /media/data/prog/workspace/opice/src/experiment.cpp:211 #16 0x0000000000415b02 in main (argc=1, argv=0x7fffffffd708) at /media/data/prog/workspace/opice/src/opice.cpp:41 (gdb) In the program, parallelization is achieved using domain decomposition. There is a Boundary class which calls the communication routines, the boundary has several "BorderComm" objects (two in current version) - each of them communicates with one neighbor. There is one Communicator object which holds the data about MPI communicator, handles MPI initialization, etc. Relevant parts look somewhat like this: class Boundary { public: void set_J(); private: BorderComm *sbx_max, *sbx_min; Communicator* comm_; }; void Boundary::set_J(){ if(sbx_min) sbx_min->receive_J(); if(sbx_max) sbx_max->receive_J(); if(sbx_max) sbx_max->send_J(); if(sbx_min) sbx_min->send_J(); comm_->waitall_recv(); if(sbx_max) sbx_max->save_J(); if(sbx_min) sbx_min->save_J(); comm_->waitall_send(); } class BorderComm { public: void send_J(); void receive_J(); void save_J(); int neighbor_; private: V3Slice *slice_J_border_; std::vector<double> *recv_array_; Communicator* comm_; }; void BorderComm::send_J() { comm_->send_fields(slice_J_border_, TYPE_J, neighbor_); } void BorderComm::receive_J(){ recv_array_ = new std::vector<double>(LEN); comm_->receive_fields(recv_array_, TYPE_J, neighbor_); } void BorderComm::save_J(){ .... put contents of recv_array_ into some V3Slice .... delete(recv_array_); } class Communicator { public: void send_fields(V3Slice* slice, PackType pack_type, int recnum); void receive_fields(std::vector<double>* recv_array, PackType pack_type, int sendnum); void waitall_send(); void waitall_recv(); protected: boost::mpi::communicator *world_; std::vector<boost::mpi::request> send_requests_; std::vector<boost::mpi::request> recv_requests_; }; void Communicator::send_fields(V3Slice* slice, PackType pack_type, int recnum) { std::vector<double> send_array(LEN); ..... fill send_array from V3Slice object ..... send_requests_.push_back(world_->isend(recnum, pack_type, send_array)); } void Communicator::receive_fields(std::vector<double>* recv_array, PackType pack_type, int sendnum) { recv_requests_.push_back(world_->irecv(sendnum, pack_type, recv_array)); } void Communicator::waitall_send(){ boost::mpi::wait_all(send_requests_.begin(), send_requests_.end()); send_requests_.clear(); } void Communicator::waitall_recv(){ boost::mpi::wait_all(recv_requests_.begin(), recv_requests_.end()); recv_requests_.clear(); } Now if I move to frame #13 in the backtrace - to get inside the Communicator class, and look at the requests, I get: (gdb) frame 13 #13 0x000000000044be38 in opice::Communicator::waitall_recv (this=0x9a76c0) at /media/data/prog/workspace/opice/src/communicator.cpp:257 (gdb) print recv_requests_ $1 = std::vector of length 2, capacity 2 = {{m_requests = {0x94f0c0 <ompi_request_null>, 0x94f0c0 <ompi_request_null>}, m_handler = 0x452040 <boost::mpi::request::handle_serialized_irecv<std::vector<double, std::allocator<double> >*>(boost::mpi::request*, boost::mpi::request::request_action)>, m_data = {px = 0x110b390, pn = {pi_ = 0x1103940}}}, {m_requests = {0xa40380, 0x94f0c0 <ompi_request_null>}, m_handler = 0x452040 <boost::mpi::request::handle_serialized_irecv<std::vector<double, std::allocator<double> >*>(boost::mpi::request*, boost::mpi::request::request_action)>, m_data = {px = 0x11ab900, pn = {pi_ = 0x11a3ec0}}}} (gdb) print send_requests_ $2 = std::vector of length 4, capacity 4 = {{m_requests = {0xa3f700, 0xa3f400}, m_handler = 0x0, m_data = {px = 0x11074c0, pn = {pi_ = 0x1105ff0}}}, {m_requests = {0xa3f100, 0xa3ee00}, m_handler = 0x0, m_data = {px = 0x11ab640, pn = {pi_ = 0x118efc0}}}, {m_requests = {0x114ec80, 0x114e980}, m_handler = 0x0, m_data = {px = 0x11aceb0, pn = {pi_ = 0x11a3770}}}, {m_requests = {0x114e680, 0x114e380}, m_handler = 0x0, m_data = {px = 0x11ad570, pn = {pi_ = 0x11a1cd0}}}} Until now, I have been using a 1D domain-decomposition algorithm, where each of the domains communicated with its two neighbors using non-blocking sends (preceded by a wait) matched with blocking recvs. Now I need to move to 3D decomposition, where each domain gets 26 neighbors. If I were to use blocking communication, I would have to devise a non-trivial algorithm to avoid deadlocks. Non-blocking communication seems a better option. So - in previous version, there was no need for waitall functions. Instead of: std::vector<boost::mpi::request> send_requests_; std::vector<boost::mpi::request> recv_requests_; there was just a single boost::mpi::request in my Communicator class. There was a call to request.wait() at the beginning of Communicator::send_fields(), and Communicator::receive_fields() used recv() instead of irecv(). This worked, but the order of communication in Boundary::set_J() had to be fixed (send to left, recv from right, send to right, recv form left). Now that would be very ugly for up to 26 neighbors, so the idea was to: 1. isend everything 2. irecv everything 3. wait until everything is received 4. save received data 5. wait until everything is sent 6. exit the function, continue other computation.... All other functions - i.e. creating the recv_array_, copying from my V3Slice object, etc. are the same as in the "blocking version"

1 0

[MPL] unique not working?
by Michael Marcin 15 Oct '13

15 Oct '13

I pass a mpl::vector with duplicates to mpl::unique and the result still has duplicates. What am I doing wrong? http://coliru.stacked-crooked.com/a/fe85b5739eb4c15f #include <boost/mpl/vector.hpp> #include <boost/mpl/unique.hpp> #include <boost/mpl/equal_to.hpp> #include <boost/mpl/placeholders.hpp> #include <boost/type_traits/is_same.hpp> #include <boost/mpl/print.hpp> template< typename... Args > void test( const Args&... args ) { using namespace boost::mpl; using namespace boost::mpl::placeholders; typedef vector<Args...> args_types; typedef typename unique<args_types, boost::is_same<_1, _2> >::type unique_types; print< unique_types > x; } int main() { int a = 0; char b = 0; test( a, b, a ); } + g++-4.8 -std=c++11 -O2 -Wall -pedantic -pthread main.cpp main.cpp: In instantiation of ‘void test(const Args& ...) [with Args = {int, char, int}]’: main.cpp:22:19: required from here main.cpp:15:27: warning: unused variable ‘x’ [-Wunused-variable] print< unique_types > x; ^ + ./a.out

3 5

[MPL] sequence from paramater pack
by Michael Marcin 14 Oct '13

14 Oct '13

How do you construct a MPL sequence from a variadic template parameter pack?

2 2

Parsing and evaluate boolean expression
by Olivier Austina 13 Oct '13

13 Oct '13

Hi All, I would like to parse and evaluate boolean expression such as (a=b and c>9). I am following this example at http://stackoverflow.com/questions/12598029/how-to-calculate-boolean-expres…. This is the code for parsing steps: #include <boost/config/warning_disable.hpp> #include <boost/spirit/include/qi.hpp> #include <boost/spirit/include/phoenix.hpp> #include <boost/spirit/include/phoenix_operator.hpp> #include <boost/variant/recursive_wrapper.hpp> #include <boost/lexical_cast.hpp> namespace qi = boost::spirit::qi; namespace phx = boost::phoenix; struct op_or {}; struct op_and {}; struct op_not {}; struct op_equal{}; struct op_not_equal{}; struct op_less{}; struct op_less_equal{}; struct op_greater{}; struct op_greater_equal{}; typedef std::string var; template <typename tag> struct binop; template <typename tag> struct unop; typedef boost::variant<var, boost::recursive_wrapper<unop <op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > > expr; template <typename tag> struct binop { explicit binop(const expr& l, const expr& r) : oper1(l), oper2(r) { } expr oper1, oper2; }; template <typename tag> struct unop { explicit unop(const expr& o) : oper1(o) {} expr oper1; }; template <typename It, typename Skipper = qi::space_type> struct parser : qi::grammar<It, expr(), Skipper> { parser() : parser::base_type(expr_) { using namespace qi; expr_ = boolExpr_.alias(); boolExpr_ = *((compExpr_ >> '|' >> compExpr_ ) [ _val = phx::construct<binop<op_or > >(_1, _2) ] |(compExpr_ >> '&' >> compExpr_ ) [ _val = phx::construct<binop<op_and > >(_1, _2) ] |(compExpr_ >> '!' >> compExpr_ ) [ _val = phx::construct<binop<op_not > >(_1, _2) ] ); compExpr_=((compExpr_ >> '=' >> compExpr_ ) [ _val = phx::construct<binop<op_equal > >(_1, _2) ] |(compExpr_ >> "!=" >> compExpr_ ) [ _val = phx::construct<binop<op_not_equal > >(_1, _2) ] |(compExpr_ >> '<' >> compExpr_ ) [ _val = phx::construct<binop<op_less > >(_1, _2) ] | (compExpr_ >> '<=' >> compExpr_ ) [ _val = phx::construct<binop<op_less_equal> >(_1, _2) ] | (compExpr_ >> '>' >> compExpr_ ) [ _val = phx::construct<binop<op_greater> >(_1, _2) ] | (compExpr_ >> ">=" >> compExpr_ ) [ _val = phx::construct<binop<op_greater_equal> >(_1, _2) ] |'(' >> boolExpr_>>')' | varExpr_ ); varExpr_=qi::lexeme[ +(alpha|digit) ]; BOOST_SPIRIT_DEBUG_NODE(expr_); BOOST_SPIRIT_DEBUG_NODE(boolExpr_); BOOST_SPIRIT_DEBUG_NODE(compExpr_); BOOST_SPIRIT_DEBUG_NODE(varExpr_); // BOOST_SPIRIT_DEBUG_NODE(simple); // BOOST_SPIRIT_DEBUG_NODE(var_); } private: qi::rule<It, var() , Skipper> varExpr_; qi::rule<It, expr(), Skipper> boolExpr_, compExpr_, expr_; }; int main() { std::string inputs="a=b & c>9"; typedef std::string::const_iterator It; It iter=inputs.begin(),end=inputs.end(); parser<It> p; try { expr result; bool ok = qi::phrase_parse(iter,end,p,qi::space,result); if (!ok) std::cerr << "invalid input\n"; else { std::cout << "result:\t" << result << "\n"; // std::cout << "evaluated:\t" << evaluate(result) << "\n"; } } catch (const qi::expectation_failure<It>& e) { std::cerr << "expectation_failure at '" << std::string(e.first, e.last) << "'\n"; } if (iter!=end) std::cerr << "unparsed: '" << std::string(iter,end) << "'\n"; return 0; } Before the parser instantiation, the compilation is ok. This is error. Thank you for any suggestion: c:\boost\boost_1_53_0\boost\spirit\home\qi\nonterminal\rule.hpp:176: erreur : no matching function for call to 'assertion_failed(mpl_::failed************ (boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::define(boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>&, const Expr&, mpl_::false_) [with Auto = mpl_::bool_<false>, Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char (&)[3]>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_not_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_less> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const int&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_less_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_greater> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char (&)[3]>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_greater_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&>, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, std::basic_string<char>(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, T1 = boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type, boost::spirit::qi::rule<Iterator, T1, T2, T3, T4> = boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>, mpl_::false_ = mpl_::bool_<false>]::error_invalid_expression::************)(boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char (&)[3]>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_not_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_less> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const int&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_less_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_greater> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char (&)[3]>, 0l> >, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::phoenix::composite<boost::phoenix::detail::construct_eval<binop<op_greater_equal> >, boost::fusion::vector<boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::variant<std::basic_string<char>, boost::recursive_wrapper<unop<op_not> >, boost::recursive_wrapper<binop<op_and> >, boost::recursive_wrapper<binop<op_or> >, boost::recursive_wrapper<binop<op_equal> >, boost::recursive_wrapper<binop<op_not_equal> >, boost::recursive_wrapper<binop<op_less> >, boost::recursive_wrapper<binop<op_less_equal> >, boost::recursive_wrapper<binop<op_greater> >, boost::recursive_wrapper<binop<op_greater_equal> > >(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l> >, 2l>&>, 2l>&, boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, std::basic_string<char>(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::standard> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&>, 2l>))' c:\boost\boost_1_53_0\boost\variant\detail\variant_io.hpp:64: erreur : no match for 'operator<<' in '((const boost::detail::variant::printer<std::basic_ostream<char> >*)this)->boost::detail::variant::printer<std::basic_ostream<char> >::out_ << operand' c:\boost\boost_1_53_0\boost\variant\detail\variant_io.hpp:64: erreur : no match for 'operator<<' in '((const boost::detail::variant::printer<std::basic_ostream<char> >*)this)->boost::detail::variant::printer<std::basic_ostream<char> >::out_ << operand' c:\boost\boost_1_53_0\boost\variant\detail\variant_io.hpp:64: erreur : no match for 'operator<<' in '((const boost::detail::variant::printer<std::basic_ostream<char> >*)this)->boost::detail::variant::printer<std::basic_ostream<char> >::out_ << operand' c:\boost\boost_1_53_0\boost\variant\detail\variant_io.hpp:64: erreur : no match for 'operator<<' in '((const boost::detail::variant::printer<std::basic_ostream<char> >*)this)->boost::detail::variant::printer<std::basic_ostream<char> >::out_ << operand' Regards Olivier

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Re: [Boost-users] [FunctionTypes] Getting functor/lambda parameters (VS2012)
by Mateusz Loskot 12 Oct '13

12 Oct '13

On 11 October 2013 22:46, Stzpz <newstzpz(a)gmail.com> wrote: > I am not sure what is lacking in VS2012, but there is some way to overcome > this problem. > > template<class T, int argNo> > struct FunctorParameterType > { > static auto init() -> typename decltype(&T::operator()) > { > typedef typename decltype(&T::operator()) func_type; > return func_type(); > } > typedef typename decltype(FunctorParameterType<T, argNo>::init()) func_type; > typedef boost::function_types::parameter_types<func_type> parameter_types; > > typedef typename boost::mpl::at_c<parameter_types, argNo>::type type; > }; Nice one, thanks! I'll give it a try when I need it again. Best regards, -- Mateusz Loskot, http://mateusz.loskot.net

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[system] Default error codes
by Gavin Lambert 10 Oct '13

10 Oct '13

boost/system/error_code.hpp defines "errc" as a collection of standard error codes (based on posix). It also defines a constructor for error_code and error_condition that allows them to accept a single parameter of an enum type when is_error_code_enum is defined to true for that enum type. It does not, however, actually do this for its own errc enum. As a result, code such as this fails to compile: boost::system::error_code ec(boost::system::errc::operation_canceled); Is there some good reason for this, or is it an oversight? It's certainly more annoying to have to explicitly specify the generic_category().

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[iostreams] - Using sparse Windows files
by Byrne, Kevin 10 Oct '13

10 Oct '13

Hello, I am trying to write cross-platform Boost code that utilizes sparse files on Windows7 and FreeBSD. I already have Windows code that creates and accesses a sparse file. I am of the understanding that Boost code cannot create a Windows7 sparse file for me so I am trying to create the file using the Windows code and then replace my ReadFileEx() and WriteFileEx() with Boost streams. I have had luck with using iostreams::file to access an existing Windows sparse file but it fails when I have to read a sparse area thinking it is at the end of the file. I tried creating a stream using an existing HANDLE but was not successful in reading or writing file content. Before I proceed further I thought I would ask first if Boost is capable of using Windows7 sparse file technology. If it is capable I would appreciate some guidance on how. I have done a bit of searching on the web with not much helpful information. Regards, Kevin

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1.55.0 beta 1 release candidates available for testing
by Marshall Clow 10 Oct '13

10 Oct '13

Release candidate files for 1.55.0 beta 1 are available at http://boost.cowic.de/rc/ As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. This helps ensure the candidates build OK before we push them out to SourceForge. The files (and associated md5s) are: 9fa020efb06f5485628c646451b927c6 *boost_1_55_0b1_rc1.tar.gz 02d26b038ac96f19c3478d0c45a63c9b *boost_1_55_0b1_rc1.tar.bz2 de5f7d60b2387c4fe3d03eb327f095a9 *boost_1_55_0b1_rc1.zip 7deb9063846873452e6ec6918cb75a87 *boost_1_55_0b1_rc1.7z Thanks, --The release managers

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[type_traits] ice_or / ice_and not documented but recommended in coding guidelines
by Adam Romanek 10 Oct '13

10 Oct '13

Hi, I have a concern about the usage of boost::type_traits::ice_or and boost::type_traits::ice_and. I've seen it used in many places and it's even recommented in Coding Guidelines for Integral Constant Expressions [1]. The question is: why isn't it documented? Is there any reason for it? Is there any "public" (documented) equivalent? WBR, Adam Romanek [1] - http://www.boost.org/development/int_const_guidelines.html

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How to choose which library version to choose?
by Michael Kragh Pedersen 10 Oct '13

10 Oct '13

I have downloaded and built the Boost library, as according to these instructions: http://theseekersquill.wordpress.com/2010/08/24/howto-boost-mingw/ I need to use the serialization library, so I looked at the stage\lib folder, only to 16 different library files! Some are named mt, some sd, some s or d, and some a combination thereof, all this following libboost_serialization-mgw48. Some are dll files and some are a files. I tried using –lboost_serialization, as I have seen this mentioned on a lot of forums, but Eclipse says it can’t find that library. So how on Earth am I supposed to figure out which of the many files to link to?!

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Serialization unsupported version, going from 1.47.0 to 1.54.0
by Robert Bielik 10 Oct '13

10 Oct '13

Hi all, Just updated to using boost 1.54.0 and I've gotten problems with my application serializing data with 1.54.0 and a server application deserializing with 1.47.0, using text archives. I noticed the thread http://stackoverflow.com/questions/6015339/boost-serialization-archive-unsu… however it seems only to be issue with binary archives ?? Ideas ? TIA /Rob

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Example calc4.cpp for others grammars
by Olivier Austina 10 Oct '13

10 Oct '13

Hi all, I would like to customize the example calc4.cpp at http://www.boost.org/doc/libs/1_47_0/libs/spirit/example/qi/compiler_tutori… the following grammar: G-------> { A+; C} A--------> {B; C} B--------->E (like arithmetic expression grammar in calc4.cpp) How to modifier this boost variant instruction for this grammar or there no need to change it: typedef boost::variant< nil , unsigned int , boost::recursive_wrapper<signed_> , boost::recursive_wrapper<program> > In general what to put in boost variant for specific grammar (or AST). Any suggestion is welcome. Thank you. Regards Olivier

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[Fusion] Simple transform not working in 1.54?
by Andrew 10 Oct '13

10 Oct '13

Hi, Can anyone shed any light on why this simple test case results in an instantiation of ‘struct inspect<boost::fusion::vector2<boost::fusion::detail::apply_transform_result<int>...' instead of the expected 'struct inspect<boost::fusion::vector2<int, int(double)>>' ? Sorry about the use of pastebin, boost.codepad.org is down. http://pastebin.com/kctYLfag

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Re: [Boost-users] Boost range iterator pointing to wrong element
by Giorgos Sermaidis 09 Oct '13

09 Oct '13

Dear Nate and Gavin, Thank you so much for such a detailed explanation! It is very clear now. boost-users-request(a)lists.boost.org wrote: >Send Boost-users mailing list submissions to > boost-users(a)lists.boost.org > >To subscribe or unsubscribe via the World Wide Web, visit > http://lists.boost.org/mailman/listinfo.cgi/boost-users >or, via email, send a message with subject or body 'help' to > boost-users-request(a)lists.boost.org > >You can reach the person managing the list at > boost-users-owner(a)lists.boost.org > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of Boost-users digest..." > > >Today's Topics: > > 1. [thread] Test if a thread is running (Patrick Steele) > 2. Re: [thread] Test if a thread is running (Kim Barrett) > 3. Re: [thread] Test if a thread is running > (christoph.kliemt(a)pgxml.net) > 4. Type Erasure: Infinite loop when accessing an element of a > container of any<>, where the element is another container > (Alexandre Pretyman) > 5. Re: [boost] [1.55.0] Beta 1 Available (Rich E) > 6. Re: Boost range iterator pointing to wrong element (Nathan Ridge) > 7. Re: [thread] Test if a thread is running (Patrick Steele) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Tue, 8 Oct 2013 17:15:05 +0100 >From: Patrick Steele <steele.patrick(a)gmail.com> >To: boost-users(a)lists.boost.org >Subject: [Boost-users] [thread] Test if a thread is running >Message-ID: > <CAFXDkHyrnTqijUc09otuNs7w+DwXSTue5eLh0-HZBvq+RH=HSg(a)mail.gmail.com> >Content-Type: text/plain; charset="iso-8859-1" > >boost = 1.54 >OS = Windows 7 >compiler = Visual Studio 2005 > >Hi, >in order to test if a boost.thread is running I used timed_join as per >http://stackoverflow.com/questions/1667420/how-can-i-tell-reliably-if-a-boo…, >which recommended that I should be able to call timed_join with a wait time >of 0 ie >bool isThreadRunning = ! m_Thread.timed_join( boost::get_system_time() ); >I have just upgraded to boost 1.54 to see that this no longer appears to >work and that the timed_join function is being deprecated. >Can you tell me how I should now check whether a thread is running please? >Thanks, >Patrick >

1 0

Type Erasure: Infinite loop when accessing an element of a container of any<>, where the element is another container
by Alexandre Pretyman 09 Oct '13

09 Oct '13

Hi Boost list! After watching Sean Parent's lightning-talk "Inheritance is the base class of Evil" ( http://channel9.msdn.com/Events/GoingNative/2013/Inheritance-Is-The-Base-Cl…) I decided to try a similar example with Boost's Type Erasure library, but did not succeed. I created a vector of any<.., ostreamable<>,...>, implemented the stream operator to print this vector type and I can print its' elements. A problem arises, however, when I insert this vector as an element of a second vector. When I print the second vector I encounter an infinite loop ending with a stack overflow when accessing the vector type when it is an element of second vector. The example which demonstrates this behaviour follows attached on this message. I am using Boost 1.55 from the trunk with clang 3.2 from Apple, compiling it with the flags "-std=c++11 -stdlib=libc++" and linking with "-stdlib=libc++". I would be grateful if anyone could try this on your local boost version and compiler. Can anyone shed some light on why this happens? Regards, -- Alexandre Pretyman

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[thread] Test if a thread is running
by Patrick Steele 09 Oct '13

09 Oct '13

boost = 1.54 OS = Windows 7 compiler = Visual Studio 2005 Hi, in order to test if a boost.thread is running I used timed_join as per http://stackoverflow.com/questions/1667420/how-can-i-tell-reliably-if-a-boo…, which recommended that I should be able to call timed_join with a wait time of 0 ie bool isThreadRunning = ! m_Thread.timed_join( boost::get_system_time() ); I have just upgraded to boost 1.54 to see that this no longer appears to work and that the timed_join function is being deprecated. Can you tell me how I should now check whether a thread is running please? Thanks, Patrick

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Re: [Boost-users] [boost] 1.55.0 beta 1 release candidates available for testing
by Akira Takahashi 09 Oct '13

09 Oct '13

2013/10/8 Domagoj Saric <dsaritz(a)gmail.com> > On 3.10.2013. 18:19, Marshall Clow wrote:> Release candidate files for > 1.55.0 beta 1 are available at > > > http://boost.cowic.de/rc/ > > > > As always, the release managers would appreciate it if you download > > the candidate of your choice and give building it a try. Please report > > both success and failure, and anything else that is noteworthy. > > With MSVC12 RC: > * 1.54 and 1.55 b1 RC - lots of: > .\boost/iterator/detail/**facade_iterator_category.hpp(**166) : error > C2039: 'assert_not_arg' : is not a member of 'boost::mpl' > This issue fixed by this commit. http://lists.boost.org/boost-commit/2013/05/46330.php However, not merge to release branch yet.

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(Better) Compile time strings
by Rodrigo Madera 09 Oct '13

09 Oct '13

Is there any roadmap for the inclusion of C++11 compile time strings into Boost MPL (or a separate library) as mentioned in Abel Sinkovics and Dave Abrahams' article [1]? If so, any ideas for non-C++11 uses? Thanks, Rodrigo [1] http://cpp-next.com/archive/2012/10/using-strings-in-c-template-metaprogram…

1 0

Utree tutorial
by Olivier Austina 09 Oct '13

09 Oct '13

Hi, I would like to learn how to build AST with utree. I am looking for some basic starting points as newbie in boost. Any suggestion is welcome. Thank you. Regards Olivier

1 0

Boost range iterator pointing to wrong element
by Giorgos Sermaidis 09 Oct '13

09 Oct '13

Hi all, I have a vector<pair<bool, int>> from which I need to read (and possibly write) only the vector elements for which the boolean value of the pair is true. I am using boost range filter and reverse adaptors to do that. However, I noticed that the order of the adaptors, ie whether I use reversed | filtered or filtered | reversed produces different results. In fact, for the latter when I use an iterator to the transformed range to change the boolean value of the pair, then the iterator after the change points to a different vector element. This does not happen when I use reversed | filtered. Below is the code demonstrating the issue. Any ideas as to why this is happening are much appreciated! #include <boost/range/adaptors.hpp> #include <vector> #include <utility> #include <iostream> using namespace boost::adaptors; using container_type = std::vector<std::pair<bool,int>>; struct to_include { bool operator()(const std::pair<bool,int>& x) { return x.first; } }; int main() { container_type container; /* element0: 1, 1 */ /* element1: 1, 2 */ /* element2: 1, 3 */ for(size_t i=0; i!=3; ++i) container.push_back(std::make_pair(true, i+1)); container_type container_cpy = container; /* filter and then reverse */ auto fr = container | filtered(to_include()) | reversed; auto fr_it1 = fr.begin(); auto fr_it2 = std::next(fr_it1); fr_it2->first = false; std::cout << "FILTER AND THEN REVERSE\n"; std::cout << fr_it2->first << " " << fr_it2->second << '\n'; /* prints (1,1) instead of (0,2) */ /* reverse and then filter */ auto rf = container_cpy | reversed | filtered(to_include()); auto rf_it1 = rf.begin(); auto rf_it2 = std::next(rf_it1); rf_it2->first = false; std::cout << "\nREVERSE AND THEN FILTER\n"; std::cout << rf_it2->first << " " << rf_it2->second << '\n'; /* prints (0,2) */ return 0; }

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Serial port example compiles in Makefile, but does not compile under Eclipse
by Ulf Samuelsson 07 Oct '13

07 Oct '13

Running Eclipse 3.7.2 on Ubuntu 12.10 (i386) with Boost 1.49 Trying to get a serial port running with a callback Found: http://www.webalice.it/fede.tft/serial_port/serial_port.html and the source: git clone: git://gitorious.org/serial-port/serial-port.git When I compile a serial port example 4 with g++ I do not get any problems. When I compile exactly the same class from Eclipse I get an error. thread t(boost::bind(&asio::io_service::run, &pimpl->io)); // Offending code ------------------------------------------------------------------ 'boost::bind' is ambiguous ' Candidates are: boost::_bi::bind_t<unsigned int,unsigned int (*)(boost::system::error_code &),boost::_bi::list1<boost::_bi::value<boost::asio::io_service *>>> bind(unsigned int (*)(boost::system::error_code &), boost::asio::io_service *) boost::_bi::bind_t<unsigned int,boost::_mfi::mf0<unsigned int,boost::asio::io_service>,boost::_bi::list1<boost::_bi::value<boost::asio::io_service *>>> bind(unsigned int (boost::asio::io_service::*)(), boost::asio::io_service *) ' AsyncSerial.cpp /nodeserver/src line 102 Semantic Error ------------------------------------------------------------------ pimpl->io is a boost::asio::io_service class AsyncSerialImpl: private boost::noncopyable { public: ... boost::asio::io_service io; ///< Io service object ... }; Someone suggest I declare a pointer to the run function, to resolve the problem, which I tried, but didnt get it right. How do I declare a variable, which can be assigned the io_service::run function? <?> myrun = &boost::asio::io_service::run; Any other ideas? Why compile and link in the makefile and not inside Eclipse? Tried on a Ubuntu 13.04 machine with the same problem. BR Ulf Samuelsson ==================================================================== Part of the code. ------------------------ void AsyncSerial::open(const std::string& devname, unsigned int baud_rate, asio::serial_port_base::parity opt_parity, asio::serial_port_base::character_size opt_csize, asio::serial_port_base::flow_control opt_flow, asio::serial_port_base::stop_bits opt_stop) { if(isOpen()) close(); setErrorStatus(true);//If an exception is thrown, error_ remains true pimpl->port.open(devname); pimpl->port.set_option(asio::serial_port_base::baud_rate(baud_rate)); pimpl->port.set_option(opt_parity); pimpl->port.set_option(opt_csize); pimpl->port.set_option(opt_flow); pimpl->port.set_option(opt_stop); //This gives some work to the io_service before it is started pimpl->io.post(boost::bind(&AsyncSerial::doRead, this)); --------------------------------------------------------------------------------------------------------------------------- thread t(boost::bind(&asio::io_service::run, &pimpl->io)); // Offending code --------------------------------------------------------------------------------------------------------------------------- pimpl->backgroundThread.swap(t); setErrorStatus(false);//If we get here, no error pimpl->open=true; //Port is now open } class AsyncSerialImpl: private boost::noncopyable { public: AsyncSerialImpl(): io(), port(io), backgroundThread(), open(false), error(false) {} boost::asio::io_service io; ///< Io service object boost::asio::serial_port port; ///< Serial port object boost::thread backgroundThread; ///< Thread that runs read/write operations bool open; ///< True if port open bool error; ///< Error flag mutable boost::mutex errorMutex; ///< Mutex for access to error /// Data are queued here before they go in writeBuffer std::vector<char> writeQueue; boost::shared_array<char> writeBuffer; ///< Data being written size_t writeBufferSize; ///< Size of writeBuffer boost::mutex writeQueueMutex; ///< Mutex for access to writeQueue char readBuffer[AsyncSerial::readBufferSize]; ///< data being read /// Read complete callback boost::function<void (const char*, size_t)> callback; };

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Using boost::iostreams::restrict without overconsuming the original stream
by Avi Kivity 07 Oct '13

07 Oct '13

Hi, I amy trying to split an incoming streams into multiple substreams (specifically, an incoming cpio stream into its individual files). After parsing the header in the incoming stream, I have the file size, and can use boost::iostreams::restrict to create a substream containing only the file data, which the user can subsequently consume. However some experiments with filtering_streambuf show that it will consume past the end of the substream. Will the same happen with restrict?

1 0

Boost MSM : Virtual Memory Exhausted: cannot allocate memory
by rahul baruah 06 Oct '13

06 Oct '13

Hello, I am using boost Meta - state machine. I have 19 state which is compiling ok. but whn i incease the number of state transition in Transition table(using internal_transition_table) i get this error: *"Virtual Memory Exhausted: cannot allocate memory"* * * * *Has anyone has face the same problem?? Regards Rahul

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Doc error?
by Larry 06 Oct '13

06 Oct '13

In the doc (1.54.0) for algorithms under C++14, the first code segment under both equal and mismatch, the last line (for equal here) shows std::equal ( seq1.begin (), seq1.end (), seq1.begin (), seq2.end ()); // false ^^^^^^ Shouldn’t that be std::equal ( seq1.begin (), seq1.end (), seq2.begin (), seq2.end ()); // false ^^^^^^ Similar for mismatch. Larry

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