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RE: [Boost-users] boost::thread maybe have bug.
by Randy Bowen 03 Nov '04

03 Nov '04

Yes, it's copied and you're not logging construction in your copy constructor. It's working as designed. > -----Original Message----- > From: Cory Nelson [mailto:phrosty@gmail.com] > Sent: Wednesday, November 03, 2004 8:08 AM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] boost::thread maybe have bug. > > I think boost makes a copy of the object (i'm sure someone > else will confirm/shoot this down), though I'm not sure if it > would cause that. > try passing a boost::ref? > > > On Wed, 3 Nov 2004 23:28:56 +0800, 蹬三轮的 <tricycle(a)gmail.com> wrote: > > Recently, I download boost 1.31.0 and compile it with > Visual studio.net 2003. > > But the code below can't work properly: > > > > class A > > { > > public: > > A() { printf("constructor.\n"); } > > > > ~A() { printf("destructor.\n"); } > > > > void operator () () { } > > }; > > > > int main(int argc, char* argv[]) > > { > > A a; > > boost::thread t(a); > > t.join(); > > } > > > > In my system, it generate the message like this: > > D:\thread\Debug>thread.exe > > constructor. > > destructor. > > destructor. > > destructor. > > destructor. > > destructor. > > destructor. > > > > Who can tell me what's wrong with boost or something else? > > > > -- > > Ride tricycle around the world. > > _______________________________________________ > > Boost-users mailing list > > Boost-users(a)lists.boost.org > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > > -- > Cory Nelson > http://www.int64.org > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Re:Re: i am stuck since a week here: need help:scoping error when trying to make boost work with luabind
by Rohit O chokhani 03 Nov '04

03 Nov '04

thanks brian and aleksey....well i installed the latest beta of visual studio 2005 instead of my mvc 6.0. It did get rid of the block scoping issues and many other compiling issues i was facing. I had to replace the apply_if with eval_if everywhere. could understand the exact technicalities of that, but read it from some post on the forum and just followed it..... now, i got different issues though....everything compiles perfect but i get like a million linking issues.......... the details are as follows: HelloWorld_GameApp.obj :error LNK2019: unresolved external symbol _memcpy_s referenced in function "public: static char * __cdecl std::char_traits<char>::_Copy_s(char *,unsigned int,char const *,unsigned int)" (?_Copy_s@?$char_traits@D@std@@SAPADPADIPBDI@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _memmove_s referenced in function "public: static char * __cdecl std::char_traits<char>::_Move_s(char *,unsigned int,char const *,unsigned int)" (?_Move_s@?$char_traits@D@std@@SAPADPADIPBDI@Z) HelloWorld_GameApp.obj : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _free referenced in function "public: virtual __thiscall std::exception::~exception(void)" (??1exception@std@@UAE@XZ) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) referenced in function "public: virtual void * __thiscall std::exception::`scalar deleting destructor'(unsigned int)" (??_Gexception@std@@UAEPAXI@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "public: __thiscall luabind::module_::module_(struct lua_State *,char const *)" (??0module_@luabind@@QAE@PAUlua_State@@PBD@Z) referenced in function "class luabind::module_ __stdcall luabind::module(struct lua_State *,char const *)" (?module@luabind@@YG?AVmodule_@1@PAUlua_State@@PBD@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_settop@8 referenced in function "class luabind::detail::object_rep * __stdcall luabind::detail::is_class_object(struct lua_State *,int)" (?is_class_object@detail@luabind@@YGPAVobject_rep@12@PAUlua_State@@H@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_toboolean@8 referenced in function "class luabind::detail::object_rep * __stdcall luabind::detail::is_class_object(struct lua_State *,int)" (?is_class_object@detail@luabind@@YGPAVobject_rep@12@PAUlua_State@@H@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_gettable@8 referenced in function "class luabind::detail::object_rep * __stdcall luabind::detail::is_class_object(struct lua_State *,int)" (?is_class_object@detail@luabind@@YGPAVobject_rep@12@PAUlua_State@@H@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_pushstring@8 referenced in function "class luabind::detail::object_rep * __stdcall luabind::detail::is_class_object(struct lua_State *,int)" (?is_class_object@detail@luabind@@YGPAVobject_rep@12@PAUlua_State@@H@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_getmetatable@8 referenced in function "class luabind::detail::object_rep * __stdcall luabind::detail::is_class_object(struct lua_State *,int)" (?is_class_object@detail@luabind@@YGPAVobject_rep@12@PAUlua_State@@H@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_touserdata@8 referenced in function "class luabind::detail::object_rep * __stdcall luabind::detail::is_class_object(struct lua_State *,int)" (?is_class_object@detail@luabind@@YGPAVobject_rep@12@PAUlua_State@@H@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _lua_tonumber@8 referenced in function "public: int __thiscall luabind::detail::primitive_converter<struct luabind::detail::lua_to_cpp>::apply(struct lua_State *,struct luabind::detail::by_value<int>,int)" (?apply@?$primitive_converter@Ulua_to_cpp@detail@luabind@@@detail@luabind@@QAEHPAUlua_State@@U?$by_value@H@23@H@Z) HelloWorld_GameApp.obj : error LNK2001: unresolved external symbol __fltused ..... so on and on :mpl::bool_<1>,struct luabind::constructor<int,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type,struct luabind::detail::null_type> *,struct luabind::detail::null_type const &)" (??$def_constructor@U?$constructor@HUnull_type@detail@luabind@@U123@U123@U123@U123@U123@U123@U123@U123@@luabind@@Unull_type@detail@2@@?$class_@VMultiObject@@Uunspecified@detail@luabind@@U234@U234@@luabind@@AAEAAU01@U?$bool_@$00@mpl@boost@@PAU?$constructor@HUnull_type@detail@luabind@@U123@U123@U123@U123@U123@U123@U123@U123@@1@ABUnull_type@detail@1@@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "public: void __thiscall luabind::detail::class_base::add_method(char const *,struct luabind::detail::overload_rep const &)" (?add_method@class_base@detail@luabind@@QAEXPBDABUoverload_rep@23@@Z) referenced in function "private: struct luabind::class_<class MultiObject,struct luabind::detail::unspecified,struct luabind::detail::unspecified,struct luabind::detail::unspecified> & __thiscall luabind::class_<class MultiObject,struct luabind::detail::unspecified,struct luabind::detail::unspecified,struct luabind::detail::unspecified>::virtual_def<void (__thiscall MultiObject::*)(int),struct luabind::detail::null_type>(char const *,void (__thiscall MultiObject::*const &)(int),struct luabind::detail::null_type const &,struct luabind::detail::null_type,struct boost::mpl::bool_<1>)" (??$virtual_def@P8MultiObject@@AEXH@ZUnull_type@detail@luabind@@@?$class_@VMultiObject@@Uunspecified@detail@luabind@@U234@U234@@luabind@@AAEAAU01@PBDABQ8MultiObject@@AEXH@ZABUnull_type@detail@1@U341@U?$bool_@$00@mpl@boost@@@Z) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "public: void __thiscall luabind::module_::operator[](struct luabind::scope)" (??Amodule_@luabind@@QAEXUscope@1@@Z) referenced in function "public: virtual enum ERROR_CODE __thiscall CTestRoom::OnStartRoom(void)" (?OnStartRoom@CTestRoom@@UAE?AW4ERROR_CODE@@XZ) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "public: __thiscall luabind::scope::scope(struct luabind::scope const &)" (??0scope@luabind@@QAE@ABU01@@Z) referenced in function "public: virtual enum ERROR_CODE __thiscall CTestRoom::OnStartRoom(void)" (?OnStartRoom@CTestRoom@@UAE?AW4ERROR_CODE@@XZ) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "void __stdcall luabind::open(struct lua_State *)" (?open@luabind@@YGXPAUlua_State@@@Z) referenced in function "public: virtual enum ERROR_CODE __thiscall CTestRoom::OnStartRoom(void)" (?OnStartRoom@CTestRoom@@UAE?AW4ERROR_CODE@@XZ) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol "public: void __thiscall CxDrawText::SetFont(unsigned int)" (?SetFont@CxDrawText@@QAEXI@Z) referenced in function "public: virtual enum ERROR_CODE __thiscall CTestRoom::OnStartRoom(void)" (?OnStartRoom@CTestRoom@@UAE?AW4ERROR_CODE@@XZ) HelloWorld_GameApp.obj : error LNK2019: unresolved external symbol _atexit referenced in function "void __cdecl g_cTest::`dynamic initializer'(void)" (??__Eg_cTest@@YAXXZ) LINK : error LNK2001: unresolved external symbol _WinMainCRTStartup LINK : error LNK2001: unresolved external symbol __load_config_used n0\HelloWorld_GameAppn0.exe : fatal error LNK1120: 198 unresolved externals Build log was saved at "file://c:\MISC\msvc2005\HelloWorld_GameApp\n0\BuildLog.htm" HelloWorld_GameApp - 199 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== do these link post sound familiar with something you have seen before or they could be my code specific which i will have to dig into..... well, i am trying to make luabind and boost work with someone elses code.....so i do not completely understand it myself.... just trying to register a few classes from there thru a hello world app and trying to work my way from luabind from there..... any assitance over here will be appreciated.... also, just to verify, for linking what all .libs need to be listed in the project options... i have lua.lib, lua_debug.lib... i have the paths for luabind and boost set up as per the documentations...is there anything else that needs to be done to get the environment correct...just wondering if i am missing out on any .libs to be listed in the project settings???? thanks and regards, rohit ---------------------- you wrote: Brian Braatz] " C:\Program Files\Microsoft Visual > > Studio\VC98\" This shows me you are using VC6. While you "can" do this, you are asking for more pain than anyone should be forced to have. (it is not very compliant and has lots of template quirks. AND you get pages (and pages and pages and pages) of template warnings on valid code (making debugging compile time issues much more difficult) My *strong* suggestion to you is you install at least Visual Studio .net 2003 which comes with the vc++ 7.1 compiler. If you cannot purchase this product, the command line compiler is available for free download from: http://msdn.microsoft.com/visualc/vctoolkit2003/ Hope this helps (been there, done that, got the tee-shirt :) ) --- Rohit O chokhani <rchokhani(a)yahoo.com> wrote: > Hi, i am a rookie as far as boost is concerned and i > am trying to make boost work but just cant...on the > point of giving up on it...so please help asap.... > > i am trying to use a scripting language called lua > with my c++ source code. FOr that I felt the need to > use luabind library which is completely dependent on > boost.(project specific reasons for selecting > luabind) > > > As a result i need to have boost on my system. For > the > past 3-4 days ever since i have been trying to make > boost works i have been getting all sorts of > compilation errors. > mainly they are as follows: > > C:\Program Files\Microsoft Visual > Studio\VC98\INCLUDE\memory(16) : error C2059: syntax > error : 'string' > C:\Program Files\Microsoft Visual > Studio\VC98\INCLUDE\memory(17) : error C2091: > function > returns function > C:\Program Files\Microsoft Visual > Studio\VC98\INCLUDE\memory(17) : error C2809: > 'operator new' has no formal parameters > C:\Program Files\Microsoft Visual > Studio\VC98\INCLUDE\memory(20) : error C2954: > template > definitions cannot nest > C:\BOOST2\BOOST\boost/mpl/aux_/integral_wrapper.hpp(88) > : fatal error C1506: unrecoverable block scoping > error > Error executing cl.exe. > > > > i did find some solutions of the various forums of > boost recommending to build the latest version from > cvs in order to get rid of the scoping issue. > however, > that hasnt solved my case. > > > could anyone kindly suggest some fixes, > i would really appreciate it, > thanks and regards, > rohit > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail Address AutoComplete - You start. We > finish. > http://promotions.yahoo.com/new_mail > __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com

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boost::thread maybe have bug.
by 蹬三轮的 03 Nov '04

03 Nov '04

Recently, I download boost 1.31.0 and compile it with Visual studio.net 2003. But the code below can't work properly: class A { public: A() { printf("constructor.\n"); } ~A() { printf("destructor.\n"); } void operator () () { } }; int main(int argc, char* argv[]) { A a; boost::thread t(a); t.join(); } In my system, it generate the message like this: D:\thread\Debug>thread.exe constructor. destructor. destructor. destructor. destructor. destructor. destructor. Who can tell me what's wrong with boost or something else? -- Ride tricycle around the world.

3 2

Boost::Regex - bug work-around...?
by Michael Starling 02 Nov '04

02 Nov '04

Hi there... I've been trying to implement some routines using the Boost library, primarily with the excellent RegEx library. Everything was working well enough in small tests, but when I tried running the routines on many patterns, my program would crash (it performs various pattern matching and search-and-replaces in multiple text files). I was able to determine that the crashes came on the calls to regex-related functions (though it tended to be a little unpredictable as to when, depending on the set of files I gave it). I tried changing my project settings (I use VC6, btw) to link with "debug" libraries instead of the standard ones (eg. "Debug Multithreaded"), and ran the program again, and everything worked perfectly. Unfortunately... I don't want to have my program running with all-debug libraries for performance and size reasons. However, is it possible to have my link-settings set to use standard libraries as before, but for the stuff that uses the regex library, to use a debug ".lib" file? Or... in the 'bjam' process, is it possible to say something to the effect of "when compiling the regex libraries, turn off compiler optimizations", so I can get a standard library that should work...? Hopefully that'll make sense... :P Thanks for your time, Mike.

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Request for data-member smart pointer
by Oleg Fedtchenko 02 Nov '04

02 Nov '04

Hi, Is any interest in using *member_ptr* smart pointer (e.g. for the tasks described at http://boostoleg.narod.ru/examples.htm) ? The proposed smart pointer member_ptr is described at http://boostoleg.narod.ru/member_ptr.html Oleg Fedtchenko thread entry http://lists.boost.org/MailArchives/boost/msg72943.php

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boost::mpl::apply2
by Greg Emerson 02 Nov '04

02 Nov '04

Hi, I am using VC++ 7.1 and getting an internal compiler error when compiling in DEBUG mode: boost\mpl\aux_\preprocessed\plain\apply.hpp(50) : fatal error C1001: INTERNAL COMPILER ERROR. This is at the declaration of boost::mpl::apply2 This does not happen when compiling in RELEASE mode. When doing a full build, two files cause this error, say X.cpp and Y.cpp. If I first clean the build and compile X.cpp then Y.cpp, only Y.cpp will generate the error. Ditto for reversing the order. Has anybody else seen this inexplicable (to me) behavior? Thanks, Greg

2 1

uBLAS for signal processing?
by Paul Baxter 02 Nov '04

02 Nov '04

I'm looking for a vector/matrix library that is suitable for relatively simple vector maths (+-*/, x=Ax+By) with occasional use of matrices (simple covariance calcs, matrix inversion). My main concerns are being able to optimise for speed by being able to capitalise on vendor-tuned libs on a specific architecture(e.g. MKL, ATLAS ) and maintain portability across a wide range of platforms. I'm looking to support vectors and matrices of types float, double, complex<float> and complex<double>. uBLAS seems to support specification of a storage format that allows me to define/assume an underlying representation of contiguous floats/doubles (with stride info) suitable for typical C-optimised signal processing functions to be applied. (No doubt I will hide the signal processing functions behind an appropriate lightweight interface, but it is important to be able to avoid copies etc and get to hand-tuned FFTs etc that typically are only supplied for C interfaces.) Is uBLAS the right tool for the job? (http://itpp.sourceforge.net provides an idea of where I'd like to see a processing layer end up albeit it is GPL (commercial use a problem) and doesn't have a clear separation between the underlying matrix/vectors and the various types of processing functions) Some other questions and observations: 1) What is the state of the bindings aspect of uBLAS with Atlas et al (or is this a separate project that hasn't got quite the same impetus to it as the main uBLAS development.) 2) Is there any implementation of 'tiny' vectors and matrices that reduces the abstraction penalty of say 3x3 or say 8 element vectors when compared with C. Is this possible/desirable while maintaining the uBLAS interface? 3) At the moment from a users point of view I feel the ublas docs focus heavily on implementation detail and I haven't managed to find too much in the way of simple tutorial information (pointers appreciated) to encourage simplified usage. If uBLAS is the right way forward for me I would be happy to contribute to this documentation effort. (There is mention of newer post 1.32 docs - is this already being addressed?)

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uBLAS past, present, and future.
by Daniel L Elliott 02 Nov '04

02 Nov '04

Hello, I am trying to better understand the current status of the uBLAS library. Below I have listed a few questions. Of course, any responses are completely off the record. We just need to get a better idea of the current state of uBLAS. Thank you, in advance, for any information you provide. - What is the history of uBLAS? What is the eventual goal? - What is the current status of uBLAS? How complete is it currently? Anything left unimplemented (Sparse stuff)? Should a project which relies upon uBLAS heavily *expect* to encounter bugs within uBLAS? - Is uBLAS expected to become a part of the C++ standard? - What advantages/disadvantages do you feel uBLAS has when compared to FORTRAN. Could it replace FORTRAN? Thank you to everyone for your time and effort on all BOOST libraries and for your answers. Sincerely, Dan Elliott

4 4

compile error - class reference_wrapper
by Stefano 01 Nov '04

01 Nov '04

Hello everybody While in the last week I succesfully compiled my code that included "boost/function.hpp", starting from today I have (for a reason that I ignore) the following error. The compiler (mingw32 with stlport) says: Executing make... make.exe -f "C:\temp\Makefile.win" all c++.exe -D__DEBUG__ -c main.cpp -o main.o -I"c:/mingw/STLport/stl" -I"C:/Dev-Cpp/the-agency/boost_1_31_0" -g3 In file included from C:/Dev-Cpp/the-agency/boost_1_31_0/boost/function/function_base.hpp:22, from C:/Dev-Cpp/the-agency/boost_1_31_0/boost/function/detail/prologue.hpp:16, from C:/Dev-Cpp/the-agency/boost_1_31_0/boost/function.hpp:22, from main.cpp:3: C:/Dev-Cpp/the-agency/boost_1_31_0/boost/ref.hpp:84: error: syntax error before `<' token C:/Dev-Cpp/the-agency/boost_1_31_0/boost/ref.hpp:84: error: `T' was not declared in this scope C:/Dev-Cpp/the-agency/boost_1_31_0/boost/ref.hpp:84: error: template argument 1 is invalid C:/Dev-Cpp/the-agency/boost_1_31_0/boost/ref.hpp:84: error: ISO C++ forbids declaration of `type name' with no type C:/Dev-Cpp/the-agency/boost_1_31_0/boost/ref.hpp:85: error: syntax error before `:' token This problem came out for the first time when I tried to build a static lib instead of an exe. Thanks for any hel Stefano

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Variant class serialization
by Alexander Katasonov 01 Nov '04

01 Nov '04

It is possible to serialize variant template class using boost serialization library? I couldn't do it directly, like this boost::variant<int, int, int> var; std::ofstream ofs("./out.xml"); boost::archive::xml_oarchive oa(ofs); oa << boost::serialization::make_nvp("variant", var); ofs.close();

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