- Boost-users - lists.preview.boost.org

{Serialization] Deserialization of const references
by Mccall, Kurt E. (JSC-EG411) 06 Jul '15

06 Jul '15

As near as I can tell from the documentation http://www.boost.org/doc/libs/1_57_0/libs/serialization/doc/serialization.h… , the following is the way to handle const reference members, which are initialized in the constructor. Serialization seems to be working, from an inspection of the resulting XML file, but after deserialization, the values in the object given by the const reference are wrong and are all zero. Here is my question: Is load_construct_data() below correct? It looks like … [View More]

1 0

Problems to use Boost Graph
by Oodini 04 Jul '15

04 Jul '15

Hello, I am trying to understand the boost::dijkstra_shortest_paths() function. I don't understand the second and third arguments. The documentation says they're supposed to be properties map : OUT: predecessor_map(PredecessorMap p_map) The predecessor map records the edges in the shortest path tree, the tree computed by the traversal of the graph. Upon completion of the algorithm, the edges (p[u],u) for all u in V are in the tree. The shortest path from vertex s to each … [View More]

3 4

Re: [Boost-users] [boost] Boost.DLL formal review is ongoing
by Ralf Globisch 03 Jul '15

03 Jul '15

Hi, Firstly, thanks Anthony for submitting this useful library to boost, and to Vladimir for managing the review. - Should the library be accepted? Yes. I had been meaning to test the library for some time, and with the review reminder finally made some time to do so. My vote of yes is based on my (limited) positive experience with the library, as well as having followed past related discussions on the mailing list, in which many questions are addressed. (http://lists.boost.org/Archives/… [View More]boost/2014/09/216650.php) I think boost.DLL should be accepted unless someone has a serious/valid reservation as to why this library should not to be accepted. - How useful is it? Very useful. It enabled me to add a test-plugin mechanism to an existing application (Windows and Linux) in a matter of minutes. - What's your evaluation of - Design Looks good to me. Simple to use, with good integration into rest of boost (e.g. file_system). I like the fact that the library is header only and minimal effort was required to integrate plug-in like functionality into an existing application. - Implementation I'm not knowledgeable enough to comment on this. - Documentations Good, the tutorials made it fairly easy to get going and covered my common usage scenarios Code is well commented. - How much effort did you put into your evaluation? About three hours worth of effort, reading through documentation and source code, and using library to create a very simple plug-in mechanism in an existing application. Tested basic plug-in functionality on Windows and Linux. - Did you attempt to use the library? On what systems and compilers? Yes -Linux Ubuntu 14.10 with gcc 4.9.1 with boost 1.57 -Window 7 64-bit with VS 2013 community edition with boost 1.58. Initially made the mistake of not checking the boost version (which had been 1.53 and caused lots of compilation errors.) Minor typo in documentation: Just above the "Full Sources" for tutorial 4 "If we want o make a traditional" should be "If we want to make a traditional" Regards, Ralf >>> Vladimir Prus <vladimir.prus(a)gmail.com> 07/03/15 3:52 PM >>> The formal review of Boost.DLL library by Antony Polukhin is nearing the end of the first week. As of today, over 100 people read through the library's tutorial, suggesting quite some interest. However, no reviews were submitted yet. Please take the time to post your thoughts - even if you don't have time to do a full review, or try the library, comments on design and interfaces are still very valuable. The summary of the library features and review checklists are reproduced below. Boost.DLL is a C++98 library for comfortable work with DLL and DSO. Library provides a portable across platforms way to: - load libraries at runtime - import and export any native functions and variables - make alias names for C++ mangled functions and symbols - query libraries/objects and executables for sections and exported symbols - self loading and self querying - getting program and module location by exported symbol The documentation can be found at: http://apolukhin.github.io/Boost.DLL/index.html and the source can be obtained at: https://github.com/apolukhin/Boost.DLL Please post your reviews on the mailing list and if possible, answer the following questions: - Should the library be accepted? - How useful is it? - What's your evaluation of - Design - Implementation - Documentations - Tests - How much effort did you put into your evaluation? - Did you attempt to use the library? On what systems and compilers? Thanks, Volodya _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. Please consider the environment before printing this email. -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. Please consider the environment before printing this email. [View Less]

1 0

[asio] async udp socket latency
by Andrew Hundt 03 Jul '15

03 Jul '15

I'm having difficulty with latency when running an async asio udp socket. I don't have the same problems with an identical application that uses synchronous udp. I'm communicating with a physical device which permits a maximum 5ms latency for each UDP packet, and I'm currently getting a latency of 8ms with a std dev of 0.065ms which is surprisingly precise. I'm on Mac OS X 10.10.4 with Xcode 6.3.2 (6D2105). Here are some of the key details about this problem: - Sync UDP test program … [View More]

5 7

Re: [Boost-users] Boost-users Digest, Vol 4182, Issue 1
by Carl Wallace 02 Jul '15

02 Jul '15

>Date: Wed, 1 Jul 2015 15:04:34 +0900 >From: Kohei Takahashi <flast(a)flast.jp> >To: boost-users(a)lists.boost.org >Subject: Re: [Boost-users] Boost-users Digest, Vol 4181, Issue 1 > >>> Can I get (minimal) reproducible code or more detailed error log? >>> >>> Best, >>> Kihei >> This stripped down code snip is enough to trigger the error when the >>1.58 >> code is in place and compiles fine when the code from 1.54 is … [View More]

1 0

Boost 1.58 and Intel Compiler 15
by Matthieu Brucher 02 Jul '15

02 Jul '15

Hi, Has any one worked with the latest Intel compiler on Linux? I'm hit with some Spirit/Fusion issues that don't arise with gcc 4.8.2 or clang 3.6.0. Quite difficult to diminish the number of lines in my example case, as the errors are different between in project and out of project... Cheers, Matthieu -- Information System Engineer, Ph.D. Blog: http://matt.eifelle.com LinkedIn: http://www.linkedin.com/in/matthieubrucher Music band: http://liliejay.com/

1 1

Re: [Boost-users] Boost-users Digest, Vol 4181, Issue 1
by Carl Wallace 01 Jul '15

01 Jul '15

> >Message: 7 >Date: Tue, 30 Jun 2015 11:08:50 +0900 >From: Kohei Takahashi <flast(a)flast.jp> >To: boost-users(a)lists.boost.org >Subject: Re: [Boost-users] fusion error when compiling graphviz code > using VC2010 >Message-ID: <5591FA32.6070802(a)flast.jp> >Content-Type: text/plain; charset="utf-8" > >Hi Carl, > >On 2015/06/29 20:36, Carl Wallace wrote: >> We have been using Boost's graphviz support for several years and have >> … [View More]

2 1

boost log linking
by Lane 01 Jul '15

01 Jul '15

I'm working with boost log examples (v1.55) of trivial logging and having issues linking against these libraries. I'm receiving these errors. undefined reference to `boost::log::v2s_mt_posix::core::get()' undefined reference to `boost::log::v2s_mt_posix::core::set_filter(boost::log::v2s_mt_posix::filter const&)' In function `main': undefined reference to `boost::log::v2s_mt_posix::trivial::logger::get()' undefined reference to `boost::log::v2s_mt_posix::trivial::logger::get()' undefined … [View More]

1 0

Thinking in HDF5
by nitin chandra 30 Jun '15

30 Jun '15

Hello All, I have been on this for a long time and have done a lot of research / reading on this topic, HDF5. To use it for development of in-house software for design calculation of various alignments. A lot many time the basic alignment information is picked from a map / satellite imageries. Kilometre, ground level, geographic feature on the proposed route, etc. , in a csv file. Any where between 7-9 files are generated for each alignment. 1. How to read / write data into the HDF5 file ? … [View More]

2 2

fusion error when compiling graphviz code using VC2010
by Carl Wallace 30 Jun '15

30 Jun '15

We have been using Boost's graphviz support for several years and have upgraded through a few versions of Boost with no issues in some long stable code. However, when we moved to 1.58 our Windows build broke. We are still using VC2010, with plans to move to 2015 in the not-too-distant future. We have not yet tried 1.58 in VC2015. The error message is very large but emanates from here: boost/include/boost-1_58\boost/fusion/container/list/cons.hpp(86): error C2664: 'boost::xpressive::detail::… [View More]

2 1

[msm] is that correct behavior?
by Sam Fisher 29 Jun '15

29 Jun '15

Hi Christophe, For an fsm with orthogonal regions if any region rejects an event (guard returns false), the library blocks all anonymous transitions. for example, an fsm has two regions. Region 0 returns HANDLED_TRUE, region 1 returns HANDLED_GUARD_REJECT for the same event. region_processing_helper combines it into a single "HANDLED_TRUE | HANDLED_GUARD_REJECT" value. However function process_event_internal<> (state_machine.hpp) creates handle_eventless_transitions_helper that … [View More]

2 1

[PBGL] Creating graph on multiple processes
by Alexander Frolov 29 Jun '15

29 Jun '15

Hi! I am trying to create undirected weighted graph on two mpi-processes. I use add_edge function to add edges (master (pid=0) process is responsible for this). For small graphs everything is ok. But when I create larger graphs (for instance, number of vertices is 2^20 and number of edges is 2^28) the program hangs supposedly in add_edge. For mpirun -np 1 there is no such problem. What can cause this issue? Thanks for any help! Best, Alex

1 1

Boost.DLL formal review
by Vladimir Prus 29 Jun '15

29 Jun '15

The formal review of Boost.DLL library by Antony Polukhin starts today. Boost.DLL is a C++98 library for comfortable work with DLL and DSO. Library provides a portable across platforms way to: - load libraries at runtime - import and export any native functions and variables - make alias names for C++ mangled functions and symbols - query libraries/objects and executables for sections and exported symbols - self loading and self querying - getting program and … [View More]

1 0

[Boost][DateTime] Non conforming iterators?
by dariomt＠gmail.com 29 Jun '15

29 Jun '15

Hi, The documentation for Boost.Date_Time iterators says that "Date iterators are a model of Bidirectional Iterator". However, I am not able to use them in some STL algorithms because of the lack of a required nested type. The following simplified example does not compile: #include <boost/date_time/gregorian/gregorian.hpp> #include <algorithm> void main() { using namespace boost::gregorian; date v[5]; std::copy_n( month_iterator( date(2015,06,25) ), 5, v ); } On … [View More]

2 1

[multi_index] are indices in a random access index stable on addition, can we have an "index_of" method?
by Nick Stokes 27 Jun '15

27 Jun '15

I have a stream of pairs of elements of type T, and want to insert individual T's uniquely into a container and convert the pairs to a pair of indices into this container. Boost.MultiIndex seems to be cut out exactly for this job, but I not sure about how to obtain the indices or stability of them on addition: Take, namespace bmi = boost::multi_index; typedef bmi::multi_index_container< T, bmi::indexed_by < bmi::hashed_unique< bmi::identity<T> > , bmi::random_access… [View More]

2 1

Re: [Boost-users] [Test] How to Access Private Data from a Test
by Jürgen Hunold 26 Jun '15

26 Jun '15

Hi Steven, On Donnerstag, 25. Juni 2015 21:24:51 Steven Clark wrote: > This remark really puzzles me. > Do you feel that white-box testing should > never be done? Or should never be needed? Both, in fact. See Gavin's mail for the rationale. He explained it better than I would have :-) In fact, I've got a long way with black-box testing only in the past five years, so I have strong evidence that white-box testing is unnecessary. But this is on a fresh, test-driven developed code … [View More]

1 0

[Test] How to Access Private Data from a Test
by Merrill Cornish 26 Jun '15

26 Jun '15

In the Bad-Old-Days when I had to roll my own, I would define my tests as methods of a special test class. If those tests needed to access private data in the classes under test, I would declare special test class as a friend of the class under test--one extra statement and everything worked. How do I do that using Boost test (1.58.0) with the AUTO_TEST family of macros? In the labyrinth of macro expansions, I found a struct name with the argument name from BOOST_AUTO_TEST_CASE(), but … [View More]

3 3

Interprocess - 3rd process cannot read/write the shared memory
by Lloyd 25 Jun '15

25 Jun '15

Hi, I am working on Windows 7, boost 1.57. I am using interprocess shared memory. I have two processes A and B. A creates the shared memory with read/write permission, then B opens it and writes to it. In this case it works fine. As the next step process A terminates and starts again and opens the same shared memory. But in this case, it seems that A and B are reading/writing to different memory! Is this a defined behavior? If I make B to reopen the memory, it works! Thanks, Lloyd

1 0

[datetime] little problem with periods
by Georg.Kellerer＠lfu.bayern.de 24 Jun '15

24 Jun '15

Hello, i am using Boost V1.5.8 under vs 2010 with a german windows 7 64 bit. When I tried to calculate a time period I always ran into the same problem. The period is calculated one day too short. I wrote a little program to illustrate my problem. It's important that you change the value of the variable test to the current date. Is this a bug or do I use the library in an incorrect way? Thanks a lot, Georg #include "boost/date_time.hpp" #include <iostream> using namespace std; using … [View More]

4 3

Printing local edge list in PBGL
by Alexander Frolov 23 Jun '15

23 Jun '15

Hi, I have a simple program using PBGL (boost 1.58) which creates an undirected graph and prints local edge list for the specified process. However, only for zero process the list (edges(g)) contains edge descriptors, while for non-zero processes the list is empty, which is strange, is it not? The program text is following: using namespace boost; using boost::graph::distributed::mpi_process_group; using boost::graph::parallel::process_group; std::size_t nVertices = 16; int main(int argc, … [View More]char **argv) { boost::mpi::environment env(argc, argv); mpi_process_group pg; typedef adjacency_list<listS, distributedS<mpi_process_group, vecS>, undirectedS, // Vertex properties no_property, // Edge properties property<edge_weight_t, int> > Graph; Graph g(nVertices); if (process_id(pg) == 0) { std::cout << "MST Boost running..." << std::endl; std::cout << "\tnumber of mpi processes is " << num_processes(pg) << std::endl; std::cout << "\tnumber of vertices is " << nVertices << std::endl; std::cout << "\tnumber of edges is " << /*nEdges*/ nVertices << std::endl; std::cout << "Constructing graph..."; for (int i = 0; i < nVertices; i++) { uint64_t s = (i < nVertices/2) ? 0 : nVertices/2; //uint64_t s = 0; uint64_t d = i; uint64_t w = rand(); add_edge(vertex(s, g), vertex(d, g), w, g); } std::cout << "...completed" << std::endl; } synchronize(pg); typedef property_map<Graph, edge_weight_t>::type WeightMap; WeightMap weight_map = get(edge_weight, g); if (process_id(pg) == atoi(argv[1])){ std::cout << "printing vertices:\n"; Graph::vertex_iterator v, v_end; for (boost::tie(v,v_end) = vertices(g); v != v_end; v++) { std::cout << process_id(pg) << ": (" << local(*v) << "@" << owner(*v) << ")\n"; } std::cout << "end of vertex list.\n"; std::cout << "printing edges:\n"; for (typename Graph::edge_iterator ei = edges(g).first; ei != edges(g).second; ei++) { std::cout << process_id(pg) << ": (" << local(source(*ei, g)) << "@" << owner(source(*ei,g)) << "," << local(target(*ei, g)) << "@" << owner(target(*ei,g)) << "," << get(weight_map, *ei) << ")\n"; } std::cout << "end of edge list.\n"; } return 0; } The output for the process 0: mpirun -np 2 ./simple_test 0 MST Boost running... number of mpi processes is 2 number of vertices is 16 number of edges is 16 Constructing graph......completed printing vertices: 0: (0@0) 0: (1@0) 0: (2@0) 0: (3@0) 0: (4@0) 0: (5@0) 0: (6@0) 0: (7@0) end of vertex list. printing edges: 0: (0@0,0@0,1804289383) 0: (0@0,1@0,846930886) 0: (0@0,2@0,1681692777) 0: (0@0,3@0,1714636915) 0: (0@0,4@0,1957747793) 0: (0@0,5@0,424238335) 0: (0@0,6@0,719885386) 0: (0@0,7@0,1649760492) 0: (0@0,0@1,596516649) 0: (0@0,1@1,1189641421) 0: (0@0,2@1,1025202362) 0: (0@0,3@1,1350490027) 0: (0@0,4@1,783368690) 0: (0@0,5@1,1102520059) 0: (0@0,6@1,2044897763) 0: (0@0,7@1,1967513926) end of edge list. The output for the process 1: mpirun -np 2 ./simple_test 1 MST Boost running... number of mpi processes is 2 number of vertices is 16 number of edges is 16 Constructing graph......completed printing vertices: 1: (0@1) 1: (1@1) 1: (2@1) 1: (3@1) 1: (4@1) 1: (5@1) 1: (6@1) 1: (7@1) end of vertex list. printing edges: end of edge list. Is it ok? or there is a bug in the code? Appreciate any help. Thanks a lot. Best, Alex [View Less]

1 0

Re: [Boost-users] [datetime] little problem with periods
by Georg.Kellerer＠lfu.bayern.de 23 Jun '15

23 Jun '15

Hi Boris, thanks for your help. In fact I didn't know that. Georg -----Ursprüngliche Nachricht----- Von: Boost-users [mailto:boost-users-bounces@lists.boost.org] Im Auftrag von Boris Schäling Gesendet: Dienstag, 23. Juni 2015 14:46 An: boost-users(a)lists.boost.org Betreff: Re: [Boost-users] [datetime] little problem with periods On Tue, 23 Jun 2015 13:42:03 +0200, <Georg.Kellerer(a)lfu.bayern.de> wrote: > Hello, > > i am using Boost V1.5.8 under vs 2010 with a german … [View More]

1 0

Re: [Boost-users] [datetime] little problem with periods
by Georg.Kellerer＠lfu.bayern.de 23 Jun '15

23 Jun '15

Hello Michael, > Is date period a boost function or one of your own? No, its part of boost. Georg

1 0

[Serialization] Boost segfaults in archive/basic_xml_iarchive.hpp
by Mccall, Kurt E. (JSC-EG411) 22 Jun '15

22 Jun '15

If someone could help me diagnose this segmentation fault, I'd appreciate it greatly. It has stumped me for a couple of days. I'm deserializing a non-polymorphic derived class, and Boost crashes when it attempts to process the base class: Here is the pseudocode: struct Base { int id_; std::string long_name_; template<Archive> void serialize(Archive & ar, const unsigned int file_version) { ar & BOOST_SERIALIZATION_NVP(id_); ar & … [View More]

2 2

[Serialization] Non-default constructor and template class
by Mccall, Kurt E. (JSC-EG411) 22 Jun '15

22 Jun '15

I am attempting to serialize a template class without a default constructor, so I am overriding boost::serialization::save_construct_data(). I'm not sure of the correct syntax to declare that function. The line marked below fails to compile with a "too many template-parameter-lists" error. // Forward declaration of my class template<class Key, class Value, class Hasher> class HashMap; namespace boost { namespace serialization { template<class Archive> template<class … [View More]

4 4

[Variant]Maximum Limit of types in variant and fusion vector
by Elizabeta 21 Jun '15

21 Jun '15

Hi I want to use boost::variant with types more than 50. Until now I was using boost::variant with types up to 50 like this : #define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS #define BOOST_MPL_LIMIT_LIST_SIZE 50 #define BOOST_MPL_LIMIT_VECTOR_SIZE 50 #include <boost/variant.hpp> However , now if I change BOOST_MPL_LIMIT_LIST_SIZE and BOOST_MPL_LIMIT_VECTOR_SIZE to 100 it gives me compiler errors: Cannot open include file: 'boost/mpl/list/list100.hpp': No such file or directory So is 50 … [View More]

4 5