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Re: [Boost-users] [chrono] Can not build with intel-win
by Edward Rankin 04 Jul '11

04 Jul '11

Message: 1 > Date: Sat, 2 Jul 2011 15:39:41 -0700 (PDT) > From: Vicente Botet <vicente.botet(a)wanadoo.fr> > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] [chrono] Can not build with intel-win > Message-ID: <1309646381376-3641235.post(a)n4.nabble.com> > Content-Type: text/plain; charset=UTF-8 > > > Edward Rankin wrote: > > > >> > Message du 13/06/11 09:12 > >> > De : "Bo Jensen" > >> > A : boost-users <at> lists.boost.org > >> > Copie ? : > >> > Objet : [Boost-users] [chrono] Can not build with intel-win > >> > > >> > Newest intel C++ release and vs2010, can not build with chrono from > >> trunk. > >> > > >> > I get : > >> > > >> > pnet.cpp > >> > ..\..\..\external\boost\boost/chrono/duration.hpp(94): error: expected > >> > an expression > >> > && (boost::is_convertible ^ > >> > > >> > ..\..\..\external\boost\boost/chrono/duration.hpp(124): error: > >> > expected an expression > >> > && (boost::is_convertible ^ > >> > > >> > compilation aborted for ..\network\pnet.cpp (code 2) > >> > > >> > call "C:\Program Files > >> > (x86)\Intel\ComposerXE-2011\bin\intel64//iclvars.bat" > nul > >> > icl @"bin\intel-win\release\threading-multi\pnet.obj.rsp" > >> > > >> > Any suggestions welcome. > >> > >> Hi, > >> > >> I have no idea of what could be the cause of the error. > >> > >> Please could you try adding the namespace boost to common_type and send > >> me the preprocesed output. > >> > >> Thanks, > >> Vicente > >> > >> > > Hi, > > > > I tried adding the namespace boost to common_type on L93,L95,L123 and > L125 > > but the exact same error appears. Any other ideas? > > > > > > Hi, > > It seems that this compiler version doesn't likes the default bool template > initialization with &&. > > Could you try if naming the parameter change something? > If not could you try to move the default initialization of bool at the > template instantiation (line 110)? > > Hoping this time is better, > Vicente > > -- > View this message in context: > http://boost.2283326.n4.nabble.com/Re-chrono-Can-not-build-with-intel-win-t… > Sent from the Boost - Users mailing list archive at Nabble.com. > > Assuming I did it correctly, neither suggestion worked (exact same error message). It does look like Intel doesn't support the && when used in a template initialization. Are you able to propose any other workaround? I will see if I can come up with a simple case where Visual Studio works but Intel doesn't work so that I can post it on Intel Premier support, but a fix for this will take months to appear in a release. Regards, Edward

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[graph] Having multiple BFS visitors
by Maxime van Noppen 04 Jul '11

04 Jul '11

Hi, I'm trying to have multiple visitors in the BFS algorithm, thus mixing two examples provided by the doc: http://www.boost.org/doc/libs/1_46_1/libs/graph/example/bfs-example.cpp and http://www.boost.org/doc/libs/1_46_1/libs/graph/doc/bfs_visitor.html What I have: ---------------------------------------------------------------------- #include <boost/graph/adjacency_list.hpp> #include <boost/graph/breadth_first_search.hpp> #include <iostream> enum { r, s, t, u, v, w, x, y, N }; const char *name = "rstuvwxy"; using namespace boost; class discover_visitor : public default_bfs_visitor { public: template < typename Vertex, typename Graph > void discover_vertex(Vertex u, const Graph & g) const { std::cout << "discover: " << name[u] << std::endl; } }; int main() { typedef adjacency_list < vecS, vecS, undirectedS > graph_t; graph_t g; boost::add_vertex(g); boost::add_vertex(g); boost::add_vertex(g); boost::add_vertex(g); boost::add_vertex(g); boost::add_edge(r, s, g); boost::add_edge(s, u, g); boost::add_edge(t, v, g); std::vector<double> dist(N); discover_visitor vis; breadth_first_search(g, vertex(s, g), boost::visitor( make_bfs_visitor( std::make_pair(record_distances(&dist[0], on_tree_edge()), vis) ) ) ); return EXIT_SUCCESS; } ---------------------------------------------------------------------- This produces a lot of g++ errors such as: > /usr/include/boost/graph/breadth_first_search.hpp:311:5: instantiated from ‘void boost::breadth_first_search(const VertexListGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, const boost::bgl_named_params<P, T, R>&) [with VertexListGraph = boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS>, P = boost::bfs_visitor<std::pair<boost::distance_recorder<double*, boost::on_tree_edge>, discover_visitor> >, T = boost::graph_visitor_t, R = boost::no_property, typename boost::graph_traits<Graph>::vertex_descriptor = long unsigned int]’ > bfs.cc:49:24: instantiated from here > /usr/include/boost/graph/visitors.hpp:138:44: error: no type named ‘event_filter’ in ‘class discover_visitor’ > /usr/include/boost/graph/visitors.hpp:139:51: error: no type named ‘event_filter’ in ‘class discover_visitor’ The problem seems to come from the 2nd pair argument 'vis'. It compiles if I repeat the first argument of the pair two times, ie: std::make_pair(record_distances(&dist[0], on_tree_edge()), record_distances(&dist[0], on_tree_edge())) I tried to define an 'event_filter' in my visitor class: typedef on_discover_vertex event_filter; But then I get other g++ errors: > /usr/include/boost/graph/visitors.hpp:109:8: error: no match for call to ‘(discover_visitor) (long unsigned int&, const boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS>&)’ Is it possible to have self-defined visitors in an EventVisitorList? And if so, how? I'm using boost 1.46.1 with g++ 4.6. Thanks! -- Maxime

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[interprocess] Is that possible that a desktop application open a message queue that a windows service create?
by 陈涛 04 Jul '11

04 Jul '11

I get the exception message "access denied"(interprocess_exception) when openning a message queue that a windows service created in a desktop application, the error code is "security error". Is that possible that a desktop application open a message queue that a service create? If not, I would drop the use of the message queue in my application.

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building and installing boost_log/1.0 on windows
by Shah, Gaurav N 04 Jul '11

04 Jul '11

Hi, I have downloaded boost_log/1.0 from svn. But I do not see any library files. I have never compiled boost libraries earlied. Can some one please guide me to build boost_log? Thank You, Gaurav This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect those of JPMorgan Chase & Co., its subsidiaries and affiliates. This transmission may contain information that is privileged, confidential, legally privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. Although this transmission and any attachments are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by JPMorgan Chase & Co., its subsidiaries and affiliates, as applicable, for any loss or damage arising in any way from its use. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures for disclosures relating to European legal entities.

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How & when to use weak_ptr
by doug livesey 03 Jul '11

03 Jul '11

Hi -- I'm loving how easy shared_ptr makes object handling, but am not sure about how to use weak_ptr. Should I use it in places where previously I would have, say, returned a const reference? For example: struct MyClass { const OtherObject & other_object() const; }; Would become: struct MyClass { weak_ptr<const OtherObject> other_object() const; }; Or is this wasteful, having weak_ptrs construct from shared_ptrs every time I want to access an member object? Or have I missed the point completely? ;) One convention I thought I might adopt would be like this: struct MyClass { void set_other_object( shared_ptr<OtherObject> ); // setter weak_ptr<OtherObject> get_other_object(); // non-const getter const OtherObject & other_object() const; // const getter }; Of course, that could be all kinds of dumb for all kinds of reasons I don't know about. :) Cheers, Doug.

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[numeric::convert] RoundNearest?
by Diederick C. Niehorster 03 Jul '11

03 Jul '11

Dear All, I have just discovered Boost.NumericConvert, useful and a nice effort! However, I am missing a RoundNearest function for float to int conversions, with only RoundEven being provided. RoundEven of course does exactly what it is described to do, rounding .5 to 0 and 1.5 to 2, but i'd like the highschool (usual?) behavior of rounding up when a number exactly in the middle is provided. I can implement it myself by slightly modifying RoundEven of course, but I am wondering if I am missing something obvious or whether there is a good reason why this function is not included? Thank you very much for any thoughts! Best, Dee

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Re: [Boost-users] [chrono] Can not build with intel-win
by Edward Rankin 02 Jul '11

02 Jul '11

> > Message du 13/06/11 09:12 > > De : "Bo Jensen" > > A : boost-users <at> lists.boost.org > > Copie à : > > Objet : [Boost-users] [chrono] Can not build with intel-win > > > > Newest intel C++ release and vs2010, can not build with chrono from trunk. > > > > I get : > > > > pnet.cpp > > ..\..\..\external\boost\boost/chrono/duration.hpp(94): error: expected > > an expression > > && (boost::is_convertible ^ > > > > ..\..\..\external\boost\boost/chrono/duration.hpp(124): error: > > expected an expression > > && (boost::is_convertible ^ > > > > compilation aborted for ..\network\pnet.cpp (code 2) > > > > call "C:\Program Files > > (x86)\Intel\ComposerXE-2011\bin\intel64//iclvars.bat" > nul > > icl @"bin\intel-win\release\threading-multi\pnet.obj.rsp" > > > > Any suggestions welcome. > > Hi, > > I have no idea of what could be the cause of the error. > > Please could you try adding the namespace boost to common_type and send me the preprocesed output. > > Thanks, > Vicente > > Hi, I tried adding the namespace boost to common_type on L93,L95,L123 and L125 but the exact same error appears. Any other ideas? Thanks, Edward

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Using boost function with virtual methods
by przemyslaw.sliwa＠uk.bnpparibas.com 02 Jul '11

02 Jul '11

Hi, I have a simple inheritance: class A {}; class RegressionTestScenario; typedef A CurveGen; typedef boost::shared_ptr<CurveGen> CurveGenPtr; typedef boost::function<void (RegressionTestScenario*, const std::string &)> actionFuntion; typedef boost::shared_ptr<actionFuntion> actionFuntionPtr; class RegressionTestScenario { public: virtual ~RegressionTestScenario() {} virtual void doScenario() = 0; virtual boost::shared_ptr<std::string> fileName() const = 0; virtual boost::shared_ptr<std::string> print() const = 0; virtual void unwrapPackage(const std::string &contents) = 0; protected: typedef std::vector<std::pair<actionFuntionPtr, std::string> > actionCollection; actionCollection m_actionCollection; }; class CurveGenRegressionTestScenario : public RegressionTestScenario { public: virtual void doScenario(); virtual boost::shared_ptr<std::string> fileName() const; virtual boost::shared_ptr<std::string> print() const; virtual void unwrapPackage(const std::string &contents); private: CurveGenPtr m_curveGenPtr; void addAction(const std::string &action); void changeBaseDate(const std::string &argument); void changeStvParameter(const std::string &argument); void changeLtvParameter(const std::string &argument); void changeHalfLife(const std::string &argument); void changeParameterSet(const std::string &argument); void changeCurrencyCouple(const std::string &argument); }; and I am trying to use the following: actionFuntion funPtr; if(params[0]=="BaseDate") funPtr = &CurveGenRegressionTestScenario::changeBaseDate; but it fails. I have no idea why. Could someone give me a hint? This is the output from the compiler: Cheers 1>------ Build started: Project: compare, Configuration: Release Win32 ------ 1>Compiling... 1>RegressionTestMain.cpp 1>D:\Dev\SOHO_NEW\Thirdparty\boost/bind/mem_fn_template.hpp(156) : error C2440: 'newline' : cannot convert from 'RegressionTestScenario *' to 'CurveGenRegressionTestScenario *' 1> Cast from base to derived requires dynamic_cast or static_cast 1> D:\Dev\SOHO_NEW\Thirdparty\boost/bind/mem_fn_template.hpp(171) : see reference to function template instantiation 'R boost::_mfi::mf1<R,T,A1>::call<U,const std::string>(U &,const void *,B1 &) const' being compiled 1> with 1> [ 1> R=void, 1> T=CurveGenRegressionTestScenario, 1> A1=const std::string &, 1> U=RegressionTestScenario *, 1> B1=const std::string 1> ] 1> D:\Dev\SOHO_NEW\Thirdparty\boost/function/function_template.hpp(225) : see reference to function template instantiation 'R boost::_mfi::mf1<R,T,A1>::operator ()<T0>(U &,A1) const' being compiled 1> with 1> [ 1> R=void, 1> T=CurveGenRegressionTestScenario, 1> A1=const std::string &, 1> T0=RegressionTestScenario *, 1> U=RegressionTestScenario * 1> ] 1> D:\Dev\SOHO_NEW\Thirdparty\boost/function/function_template.hpp(222) : while compiling class template member function 'void boost::detail::function::function_void_mem_invoker2<MemberPtr,R,T0,T1>::invoke(boost::detail::function::function_buffer &,T0,T1)' 1> with 1> [ 1> MemberPtr=void (__thiscall CurveGenRegressionTestScenario::* )(const std::string &), 1> R=void, 1> T0=RegressionTestScenario *, 1> T1=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & 1> ] 1> D:\Dev\SOHO_NEW\Thirdparty\boost/function/function_template.hpp(913) : see reference to class template instantiation 'boost::detail::function::function_void_mem_invoker2<MemberPtr,R,T0,T1>' being compiled 1> with 1> [ 1> MemberPtr=void (__thiscall CurveGenRegressionTestScenario::* )(const std::string &), 1> R=void, 1> T0=RegressionTestScenario *, 1> T1=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & 1> ] 1> D:\Dev\SOHO_NEW\Thirdparty\boost/function/function_template.hpp(722) : see reference to function template instantiation 'void boost::function2<R,T0,T1>::assign_to<Functor>(Functor)' being compiled 1> with 1> [ 1> R=void, 1> T0=RegressionTestScenario *, 1> T1=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> &, 1> Functor=void (__thiscall CurveGenRegressionTestScenario::* )(const std::string &) 1> ] 1> D:\Dev\SOHO_NEW\Thirdparty\boost/function/function_template.hpp(1065) : see reference to function template instantiation 'boost::function2<R,T0,T1>::function2<void(__thiscall CurveGenRegressionTestScenario::* )(const std::string &)>(Functor,int)' being compiled 1> with 1> [ 1> R=void, 1> T0=RegressionTestScenario *, 1> T1=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> &, 1> Functor=void (__thiscall CurveGenRegressionTestScenario::* )(const std::string &) 1> ] 1> D:\Dev\SOHO_NEW\Thirdparty\boost/function/function_template.hpp(1105) : see reference to function template instantiation 'boost::function<Signature>::function<void(__thiscall CurveGenRegressionTestScenario::* )(const std::string &)>(Functor,int)' being compiled 1> with 1> [ 1> Signature=void (RegressionTestScenario *,const std::string &), 1> Functor=void (__thiscall CurveGenRegressionTestScenario::* )(const std::string &) 1> ] 1> .\RegressionTestMain.cpp(182) : see reference to function template instantiation 'boost::function<Signature> &boost::function<Signature>::operator =<void(__thiscall CurveGenRegressionTestScenario::* )(const std::string &)>(Functor)' being compiled 1> with 1> [ 1> Signature=void (RegressionTestScenario *,const std::string &), 1> Functor=void (__thiscall CurveGenRegressionTestScenario::* )(const std::string &) 1> ] 1>D:\Dev\SOHO_NEW\Thirdparty\boost/bind/mem_fn_template.hpp(156) : error C2647: '->*' : cannot dereference a 'void (__thiscall CurveGenRegressionTestScenario::* const )(A1)' on a 'RegressionTestScenario *' 1> with 1> [ 1> A1=const std::string & 1> ] 1>Build log was saved at "file://d:\Dev\OwnProgs\compare\compare\Release\BuildLog.htm" 1>compare - 2 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== ___________________________________________________________ This e-mail may contain confidential and/or privileged information. 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boost::serializable | Persisting a shared_ptr to XML archive
by doug livesey 02 Jul '11

02 Jul '11

Hi -- I'm trying to serialize an object in a boost::shared_ptr, here: https://github.com/biot023/cell_biots/blob/master/include/game.h#L30 My problem is that the object isn't getting persisted, only the shared_ptr (I think). The result of this save is this: https://gist.github.com/1061413 Can anyone advise me on what I'm doing wrong? I've included <boost/serialization/shared_ptr.hpp>, but I guess there's something else I need to be doing. Any & all help very gratefully received, Doug.

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Re: [Boost-users] [review][assign] Formal review of Assign v2 ongoing
by er 02 Jul '11

02 Jul '11

This was posted to lib.boost.devel, but I meant to post it in boost.user as well: > About your other comments: > - operator| has a similar meaning in Boost.Range under adaptors. > - Feel free to suggest another prefix than 'do'. > - Dot is borrowed from Boost.Assign (1.0). Did you mean dot or %? The dot is a small price to pay for alternating between various ways to insert elements in a container, within one statement: put( cont )( x, y, z ).for_each( range1 )( a, b ).for_each( range2 ); The answer to "[Is it] just a quest to type less when using standard containers?" is yes, as illustrated just above, but it is quite a broad definition of standard containers. Version 2.0 provides macros to broaden it further (which was used to support Boost.MultiArray, for example). As for why such a library should exist, it depends on the degree to which you value the syntax above, which is very similar to Boost.Assign (1.0), in this case. You say "I ordinarily only initialize containers to literals when writing unit tests.". In this case, I think you are right that you can't beat C++0x initializer lists. But, you still may need to fill a container, as above. And also, consider the cases below: #include <vector> #include <queue> #include <string> #include <tuple> #include <boost/assign/v2/include/csv_deque_ext.hpp> int main() { typedef std::string s_; { typedef std::tuple<s_, int> t_; typedef std::vector<t_> v_; v_ v1 = { t_( "a", 1 ), t_( "b", 2 ), t_( "c", 3 ), t_( "d", 4 ), t_( "e", 5 ) }; using namespace boost::assign::v2; v_ v2 = converter( csv_deque<t_, 2>( "a", 1, "b", 2, "c", 3, "d", 4, "e", 5) ); } { typedef std::queue<int> q_; // Not aware that an initializer list works here using namespace boost::assign::v2; q_ q = converter( csv_deque<int, 1>( 1, 2, 3, 4, 5 ) ); } return 0; } > - Prefix _ is reserved for const objects (not sure the proper word for it) And I think this convention appears elsewhere in Boost, such as Boost.Parameter. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost

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