- Boost-users - lists.boost.org

compiler support question
by Brian Nantz 06 Nov '08

06 Nov '08

I have seen the list of compilers that boost officially supports (http://www.boost.org/boost-build2/doc/html/bbv2/reference/tools.html) But I am wondering if anyone has tried boost on CAD-UL? I need to support this compiler on Linux for an embedded device. Brian

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Multiple compiler & platform support.
by Brian Nantz 06 Nov '08

06 Nov '08

One of the things that drew me to use boost is that is supports so many compilers and platforms that can be mixed and matched. I am creating a library on top of boost and Arabica. I want this library I am creating to support all the compilers and platforms that boost does. What is the easiest way to do this? Do I have to duplicate much of the config and decl stuff? Has anyone done this and have some advice? brian

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Re: [Boost-users] [Multi-index] hash_unique memory consumption vs std::map
by JOAQUIN M. LOPEZ MUÑOZ 06 Nov '08

06 Nov '08

________________________________________ De: boost-users-bounces(a)lists.boost.org [boost-users-bounces(a)lists.boost.org] En nombre de Michael Fawcett [michael.fawcett(a)gmail.com] Enviado el: jueves, 06 de noviembre de 2008 22:34 Para: boost-users(a)lists.boost.org Asunto: Re: [Boost-users] [Multi-index] hash_unique memory consumption vsstd::map > Do you know of a better way to track memory usage in Windows? Task > Manager is obviously not up to the task, VTune reports it on a > system-wide basis, not per process, and _Crt* functions require > modifying your code. Use an instrumented allocator, like count_allocator in http://tinyurl.com/66xhv7 . It is an intrusive, but very precise method. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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[Multi-index] hash_unique memory consumption vs std::map
by Michael Fawcett 06 Nov '08

06 Nov '08

In my application I need to load millions of vertices into a graph. I'm using BGL for this. Each edge has around 20-30 attributes associated with it and each attribute has a unique ID (not necessarily sequential or 0-based). I'm currently using this multi_index_container for the attributes: typedef detail::mutable_pair<long, _variant_t> id_attribute_pair_type; typedef boost::multi_index_container < id_attribute_pair_type, boost::multi_index::indexed_by < boost::multi_index::hashed_unique<boost::multi_index::member<id_attribute_pair_type, long, &id_attribute_pair_type::first> > > > map_type; which emulates: typedef std::map<long, _variant_t> map_type; If I check memory consumption after loading the graph using multi_index I'm at 190MB. Using std::map it's at 124MB. I realize this is because std::map is perfectly sized and a hashmap will grow in chunks, but is there a way I can reserve a size ahead of time since I know exactly how many attributes there will be? My graph loading performance does not seem to change between multi_index and map, however subsequent search operations (shortest_path, etc) seem to favor multi_index. Thanks for such a great library. I've used it in many projects. --Michael Fawcett

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[asio] : how to monitor a tcp socket
by Mathieu Peyréga 06 Nov '08

06 Nov '08

Hello first, thanks to boost creators for these great libraries ! For my question... I have an external TCP server, to which I connect thanks to a boost.asio powered client. I am using asynchronous operations, but i have an issue, I'd like to trigger a *fast *client side deconnexion when the peer disappear (is reset for example) So far, the deconnexion occurs on an error on a asynchronous read operation, but this error happens like 10-12 seconds after the physical deconnexion occured. Is there a way to set the "time out" value ? Is there another way to detected that the peer vanished. Regards, Mathieu

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[phoenix] std::fstream problem
by Christian Henning 06 Nov '08

06 Nov '08

Hi there, sorry to bother the community with my phoenix problems today. Please consider the following code sample: #include <boost/spirit/include/phoenix_algorithm.hpp> #include <boost/spirit/include/phoenix_bind.hpp> #include <boost/spirit/include/phoenix_container.hpp> #include <boost/spirit/include/phoenix_core.hpp> #include <boost/spirit/include/phoenix_function.hpp> #include <boost/spirit/include/phoenix_fusion.hpp> #include <boost/spirit/include/phoenix_object.hpp> #include <boost/spirit/include/phoenix_operator.hpp> #include <boost/spirit/include/phoenix_scope.hpp> #include <boost/spirit/include/phoenix_statement.hpp> #include <boost/spirit/include/phoenix_stl.hpp> #include <algorithm> #include <iostream> #include <fstream> #include <vector> int _tmain(int argc, _TCHAR* argv[]) { using namespace std; using namespace boost::phoenix; using namespace boost::phoenix::arg_names; vector< int > ints; ofstream out( ".\\remove.txt" ); // works std::for_each( ints.begin(), ints.end(), cout << arg1 << " " ); // doesn't work - error C2297: '<<' : illegal, right operand has type 'const char *' std::for_each( ints.begin(), ints.end(), out << arg1 << " " ); return 0; } I couldn't find anything inside the documentation regarding file streams. Thanks, Christian

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Boost 1.37.0 Release Notice
by Beman Dawes 06 Nov '08

06 Nov '08

Boost 1.37.0 has been released and is available from SourceForge. See http://sourceforge.net/projects/boost/ This release includes one new library: Proto: Expression template library and compiler construction toolkit for domain-specific embedded languages, from Eric Niebler. Updated libraries include Asio, Circular Buffer, Dynamic Bitset, Hash, Interprocess, Intrusive, Math Type, Traits, and Unordered. The release managers were Beman Dawes, Daniel James, Eric Niebler, and Rene Rivera. The web site should be updated soon to reflect the new release. If you can't wait, see http://beta.boost.org now! --Beman Dawes

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Re: [Boost-users] shared_ptr and Visual Studio 2008 Express SP1
by Sergey Sadovnikov 06 Nov '08

06 Nov '08

Hello, John. Wednesday, November 5, 2008 at 7:37:00 PM you wrote: JM> Nothing unusual about that: you have two different shared_ptr's visible in JM> scope: boost::shared_ptr and std::tr1::shared_ptr. You need to decide which JM> you intend to use and either prefix all shared_ptr usages with the JM> appropriate qualifiers, or else just take care to only import the one JM> shared_ptr in the first place. I understand what I have two visible versions of shared_ptr. And in my code I exclude all "boost/shared_ptr.hpp" inclusions. But what I have to do with boost headers such as "date_time/gregorian/greg_month.hpp" which also include shared_ptrs? I understand, what 'using' is quite dangerous directive, but I use it only in implementation files and never in headers. It makes source code more shortly and readable. Just compare: std::tr1::bind(&std::tr1::shared_ptr<SomeType>::get, std::tr1::placeholders::_1, /* ... */); with bind(&shared_ptr<SomeType>::get, _1); :) In the first case code semantic hidden under fully-qualified names. -- Best Regards, Sergey mailto:ssadovnikov@egopolis.com

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error C2440: 'reinterpret_cast' : InterlockedCompareExchange from detail\interlocked.hpp
by Joseph Marks 06 Nov '08

06 Nov '08

Apparently, the signature of this function has changed. When we used it under Visual Studio 6.0 it compiled correctly however, the following happens in MS VS 2008: The following error appears error C2664: 'InterlockedCompareExchange' : cannot convert parameter 2 from 'PVOID' to 'LONG' If I just do a cast, I get: error C2440: 'reinterpret_cast' : cannot convert from 'DWORD' to 'long'. Does anyone have any suggestions? Thanks in advance. Joseph (-: The preceding e-mail message (including any attachments) contains information that may be confidential, or constitute non-public information. It is intended only for the designated recipient. If you are not the named addressee, you should not disseminate, distribute or copy this e-mail. If you have received this e-mail by mistake, please notify the sender immediately by replying to this message and delete this e-mail from your system. Use, dissemination, distribution or reproduction of this message by unintended recipients is not authorized and may be unlawful.

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Boost Statechart Keyboard and Pingpong example code?
by framebuffer 06 Nov '08

06 Nov '08

Hi, Please refer to the following link: http://www.boost.org/doc/libs/1_35_0/libs/statechart/doc/tutorial.html The tutorial refers to two source codes : for eg: in Asynchronous state machines "see the PingPong example for the full source code" I am unable to locate these example (keyboard and pingpong). I googled it, and no links are given in the tutorial. Thanks, fb. -- View this message in context: http://www.nabble.com/Boost-Statechart-Keyboard-and-Pingpong-example-code--… Sent from the Boost - Users mailing list archive at Nabble.com.

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