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[date-time] Local time to UTC conversion?
by Charles BROSSOLLET 20 Jul '05

20 Jul '05

Hello, I'm looking for a way to convert a local time to UTC time. I found c_local_adjustor::utc_to_local, but is there the reciprocal? thanks, -- Charles Brossollet

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Re: [Boost-users] Container/Algorithm question
by JOAQUIN LOPEZ MU?Z 20 Jul '05

20 Jul '05

----- Mensaje original ----- De: Elisha Berns <e.berns(a)computer.org> Fecha: Sábado, Julio 16, 2005 3:15 am Asunto: Re: [Boost-users] Container/Algorithm question > Joaquin, > > Sorry to be the bearer of bad news, but for some reason the multi- > indexcontainer starts to fail for some larger number of pairs (a few > hundred). The container doesn't/won't insert them, and to be > honest, I > don't have a clue at this point why. The code is so simple that I fail to see how it can be failing, so let's insert some traces: std::pair<iterator,bool> insert(const value_type& x) { iterator it0=impl.find(boost::make_tuple(x.first)); if(it0!=impl.end()){ typename impl_type::nth_index_iterator<1>::type it1= impl.template get<1>().find(x.second); if(it1!=impl.template get<1>().end()){ std::cout<<x.first<<","<<x.second<<std::endl; std::cout<<it0->first<<","<<it0->second<<std::endl; std::cout<<it1->first<<","<<it1->second<<std::endl; return std::make_pair(it0,false); } } return impl.insert(x); } Can you insert the std::cout output sentences above to your code and report what it's showing? If everything is working OK, when an insertion fails, x.first==it0->first and x.second=it1->second. Isn't it so? Can you provide the data the container is fed with when the first (erroneous) insertion failure happens? > If you're up for it you > might want > to stress test the code you sent me with thousands of unique pairs and > redundant pairs. > I'll examine this closer next Monday if we haven't located the problem before. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Serilization : Using serialization with socket++ for serializing objects over TCP connections : Problem
by nitin motgi 20 Jul '05

20 Jul '05

Hi All, I using boost::archive and socket++ libraries for serializing objects over TCP connections. Socket++ provides iosockinet class which is a derivative of iostream that supports i/o with two different buffers. Upon binding the iosockinet to a port I assign it to binary_iarchive and oarchive upon doing so .. the program aborts immediately. I am not sure what is causing this problem. Any help in this would be appreciated. ================= serialize_common.h ======================== class serialize_common { private: friend class boost::serialization::access; string name; int iVal; long lVal; unsigned int uiVal; float fVal; double dVal; template <class Archive> void serialize(Archive& ar, const unsigned int version) { ar & name; ar & iVal; ar & lVal; ar & uiVal; ar & fVal; ar & dVal; } public: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . }; ================= test.cpp ================================== /* 1. sockinetbuf is derived from sockbuf 2. iosockinet is derived from iosockstream which inturn is derived from iostream */ #include <sockinet.h> #include "serialize_common.h" int main() { serialize_common command; sockinetbuf si(sockbuf::sock_stream); si.bind(); cout << si.localhost() << ' ' << si.localport() << endl; si.listen(); while(1) { iosockinet s(si.accept()); boost::archive::binary_oarchive ao(s); <== Modifies s which comes non usable boost::archive::binary_iarchive ao(s); <== Aborts at this point char buf[1024]; while (s >> buf) { cout << buf << ' '; s << ::strlen(buf) << endl; } cout << endl; } return 0; } Thank you, Nitin

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weak_ptr for intrusive_ptr's??
by Edson Tadeu 19 Jul '05

19 Jul '05

Is there an weak_ptr<> equivalent to the intrusive_ptr<>, to handle ownership cycles? Thanks.

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cvs boost 1.33 date_time problem
by Serge Skorokhodov 19 Jul '05

19 Jul '05

Hi, I've built todays cvs boost library but date_time lib seems to have the same error as in 1.32 version. That is: wstring wts = _T("20021017T231217.12345"); wdate_facet* date_facet = new wdate_facet; wtime_facet* time_facet = new wtime_facet; ptime pt1( from_iso_string( convert_string_type<_TCHAR, char>(wts) ) ); long Y = pt1.date().year(); long M = pt1.date().month(); long d = pt1.date().day(); long h = pt1.time_of_day().hours(); long m = pt1.time_of_day().minutes(); long s = pt1.time_of_day().seconds(); long f = pt1.time_of_day().fractional_seconds(); wcout << L"Components of pt1:" << endl << L"Year: " << Y << endl << L"Month: " << M << endl << L"Day: " << d << endl << L"Hours: " << h << endl << L"Minutes: " << m << endl << L"Seconds: " << s << endl << L"Microseconds: " << f << endl; ptime pt2( gregorian::date(2002, 10, 17), posix_time::time_duration(23, 12, 17, 12345) ); wcout << pt2 << endl; Y = pt2.date().year(); M = pt2.date().month(); d = pt2.date().day(); h = pt2.time_of_day().hours(); m = pt2.time_of_day().minutes(); s = pt2.time_of_day().seconds(); f = pt2.time_of_day().fractional_seconds(); wcout << L"Components of pt2:" << endl << L"Year: " << Y << endl << L"Month: " << M << endl << L"Day: " << d << endl << L"Hours: " << h << endl << L"Minutes: " << m << endl << L"Seconds: " << s << endl << L"Microseconds: " << f << endl; Output is: Components of pt1: Year: 2002 Month: 10 Day: 17 Hours: 23 Minutes: 12 Seconds: 17 Microseconds: 0 2002-Oct-17 23:12:17.012345 Components of pt2: Year: 2002 Month: 10 Day: 17 Hours: 23 Minutes: 12 Seconds: 17 Microseconds: 12345 Another question is about wide char support. As far as I understand, wstring is supported only through stringstream and facets? TIA -- Serge

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Re: [Boost-users] Error building date_time and ICE with multi_index
by Jasper, Alexander 19 Jul '05

19 Jul '05

Hi Bart! thanks *a lot". I tried it right away and it worked. I think this something that should be included in the new documentation dealing with stlport, that Jeff posted. W/o this the release binaries do not get build if one uses the procedure outlines there. BTW: great speedup compared to debug version. kind regards Alex > -----Ursprüngliche Nachricht----- > Von: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org]Im Auftrag von Bart > Gesendet: Dienstag, 19. Juli 2005 16:09 > An: boost-users(a)lists.boost.org > Betreff: Re: [Boost-users] Error building date_time and ICE with > multi_index > > > On Mon, 18 Jul 2005 22:21:28 +0200, Jasper, Alexander wrote: > > > Hi All! > > > > I'm currently starting to use more of boost, including libs > that need compiling. Namely date_time. > > I first of all have to thank you for creating boost. It > really boosts c++ development so much. And it is amazing what > can be done with c++ templates. > > > > I'm having problems linking the date_time lib. I'm using > the vc-7_1-stlport config. In the debug build everything is > fine. But no libs are build for release mode. At least there > are none w/o the g in their name in the stage/lib folder. The > pragma comment lib stuff complains when building my program > about not being able to find > libboost_date_time-vc71-mt-p-1_32.lib. And indeed, it is not there. > > > > I'm using this cmd-line to build date_time > > > > ..\..\build\bjam.exe -sTOOLS=vc-7_1-stlport > "-sBUILD=<define>BOOST_NO_STD_WSTRING" > "-sSTLPORT_4.6.2_PATH=D:\Alexander.Jasper\hlf\OpsMan-2\tao146_ > port\thirdparty\stlport" "-sstlport-iostreams=on" > --with-date_time stage > > > > Modify your BUILD variable setting to include "release": > "-sBUILD=release <define>BOOST_NO_STD_WSTRING" > > This worked for me. > > Bart Garst > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Error building date_time and ICE with multi_index
by Jasper, Alexander 19 Jul '05

19 Jul '05

Hi All! I'm currently starting to use more of boost, including libs that need compiling. Namely date_time. I first of all have to thank you for creating boost. It really boosts c++ development so much. And it is amazing what can be done with c++ templates. I'm having problems linking the date_time lib. I'm using the vc-7_1-stlport config. In the debug build everything is fine. But no libs are build for release mode. At least there are none w/o the g in their name in the stage/lib folder. The pragma comment lib stuff complains when building my program about not being able to find libboost_date_time-vc71-mt-p-1_32.lib. And indeed, it is not there. I'm using this cmd-line to build date_time ..\..\build\bjam.exe -sTOOLS=vc-7_1-stlport "-sBUILD=<define>BOOST_NO_STD_WSTRING" "-sSTLPORT_4.6.2_PATH=D:\Alexander.Jasper\hlf\OpsMan-2\tao146_port\thirdparty\stlport" "-sstlport-iostreams=on" --with-date_time stage after building stage/lib contains these files 18.07.2005 14:39 53.248 boost_date_time-vc71-mt-gdp-1_32.dll 18.07.2005 14:39 22.400 boost_date_time-vc71-mt-gdp-1_32.lib 18.07.2005 14:39 22.400 boost_date_time-vc71-mt-gdp.lib 18.07.2005 14:39 951.040 libboost_date_time-vc71-mt-gdp-1_32.lib 18.07.2005 14:39 951.040 libboost_date_time-vc71-mt-gdp.lib I have attached the bjam output to this email. But I can't find any error messages in there. Does anybody have an idea what is could be going wrong here? Thank would be great. And thanks a lot in advance. I have another issue with VC 7.1 with the multi_index lib. If I use it in conjunction with a smart_ptr it gives me an ICE. Does anybody know if that's a known bug of VC? Fixed in 8.0? To be specific this code fails: typedef boost::multi_index::multi_index_container< boost::shared_ptr<ps::Activity>, boost::multi_index::indexed_by< boost::multi_index::ordered_unique< boost::multi_index::tag<id>, BOOST_MULTI_INDEX_CONST_MEM_FUN(ps::Activity,unsigned int,getId)>, boost::multi_index::ordered_non_unique< boost::multi_index::tag<date>,BOOST_MULTI_INDEX_CONST_MEM_FUN (ps::Activity,boost::posix_time::ptime,getBegin)> > > TLegCache; It works ok with a regular pointer. This is supposed to work, isn't it? I have not yet tried with gcc. Another thing is that it consistently crashed with another class being index. Even with a regular pointer in that case. The typedef and the class are almost the same as above. The getter functions are const and return objects by value. I simply don't get it. This damn VC. My first impression was that things got A LOT better with 7.1. But apparently I'm wrong. Or is my code broken, after all? Thanks in advance for any hints or work arounds. kind regards Alex

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Re: [Boost-users] Searching the archives
by Ovanes Markarian 19 Jul '05

19 Jul '05

Thanks for your answer Ben. Apachies offer a search through the mailing lists, which is very useful. I think, I will search using google, which can be practical. One only needs to add the website url at google with the specification where to search as addititional parameter, e.g. regex multibyte site:http://lists.boost.org/boost-users Thanks for your help, again. Ovanes. Ben Hutchings said: > Ovanes Markarian wrote: > >>Sorry to disturb you all, I have a very simple question. >>Is here a functionality to search the archives, >> > I'm not aware of any such facility on the Boost site. The "boost" mailing list has a searchable archive on ASPN > <http://aspn.activestate.com/ASPN/Mail/Browse/Threaded/boost> but they don't carry boost-users. > >> or should I use google to search within boost.org? >> >> > That's probably the best way to do to dhits. Use "site:lists.boost.org inurl:boost-users" to restrict the search. > > Ben. > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Re: [Boost-users] Error building date_time and ICE with multi_index
by Jasper, Alexander 19 Jul '05

19 Jul '05

Hi! maybe s.th. can be told from the bjam output while building dsate_time. I've attached the output to my previous post. Does it look the some as yours? Or are significant differences that might somehow indicate why I don't have the release mode libs. I've not seen any obvious error messages in there, though. It would be nice if s.o. compared that stuff. Thanks again Alex > -----Ursprüngliche Nachricht----- > Von: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org]Im Auftrag von Serge > Skorokhodov > Gesendet: Dienstag, 19. Juli 2005 14:18 > An: boost-users(a)lists.boost.org > Betreff: Re: [Boost-users] Error building date_time and ICE with > multi_index > > > Jeff Garland wrote: > > <skip> > > >> > >> I'm having problems linking the date_time lib. I'm using the > >> vc-7_1- stlport config. In the debug build everything is > >> fine. But no libs are build for release mode. At least there > >> are none w/o the g in their name in the stage/lib folder. > >> The pragma comment lib stuff complains when building my > >> program about not being able to find > >> libboost_date_time-vc71-mt-p-1_32.lib. And indeed, it is not > >> there. > >> > >> I'm using this cmd-line to build date_time > >> > >> ..\..\build\bjam.exe -sTOOLS=vc-7_1-stlport "- > >> sBUILD=<define>BOOST_NO_STD_WSTRING" "- > >> sSTLPORT_4.6.2_PATH=D:\Alexander.Jasper\hlf\OpsMan- > >> 2\tao146_port\thirdparty\stlport" "-sstlport-iostreams=on" > >> --with- date_time stage > > > > > > > > Well I'm not sure, but there have been build issues with > > vc7_1/stlport/date-time. Mostly revolving around wide char > > handling -- which it appears you've already turned off. This > > comes up enough that we wrote it up in the new version of the > > docs, but it doesn't seem likely that this is the problem, but > > just in case have a look at: > > > > > http://engineering.meta-comm.com/resources/cs-win32_metacomm/d oc/html/date_time/details.html#date_time.buildinfo > > > I'm afraid I don't have any other suggestions... > I'm not sure if it is relevant but I've just rebuilt the last cvs update and the full set of libboost-date_time* libs is built for vc-7_1 without STLPort. And I had problems building and using boost::date_time without /Zc:wchar_t switch. Still, it's a great and useful lib! -- Serge _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Searching the archives
by Ovanes Markarian 19 Jul '05

19 Jul '05

Sorry to disturb you all, I have a very simple question. Is here a functionality to search the archives, or should I use google to search within boost.org? Kind Regards, Ovanes

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