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program_options: Failure Demo
by Merrill Cornish 25 Nov '05

25 Nov '05

Below is a small program that demonstrates some of the problems I've been having. It takes one positional parameter, "limit" which is of type size_t. I'm linking statically with debug symbols. With the "try" in the position shown, after the declaration of vm, this is what happens to me for different command line arguments: * --limit=4 => works and prints limit=4 * --limt=4 => [notice misspelling] throws "unknown option limt" exception; but also triggers Dr. Watson: Application Error - The instruction at "0x0042eb49" referenced memory at "0x010900fb". The memory could not be "written". * --limit=-4 => [note negative value] never exits store(). Gets Dr. Watson "The instruction at "0x0049c090" referenced memory at "0x00eab651". The memory could not be "written. * --limit=xxx => [note string value] never exits store(). Get Dr. Watson with same message as above. Now, move the "try" to immediately after main() so all of the program options code is included in the try block. * --limit=4 => works as before * --limt=4 => [notice misspelling] Does NOT throw expected "unknown option" exception, never exits store(), but does trigger Dr. Watson, this time trying to read location 0xd. * --limit=-4 => similar error to above, with slightly different addresses. * --limt=xxx => similar error to above with slightly different addresses. Enjoy, Merrill //========================================== #include <iostream> #include "boost/program_options.hpp" using namespace std; namespace po = boost::program_options; int main(int argc, char* argv[]) { // try { po::options_description general("Option"); general.add_options() ("limit", po::value<size_t>()->default_value(1), " This is the concurrency limit."); po::variables_map vm; try { cout << "before store" << endl; po::store(po::command_line_parser(argc, argv). options(general).run(), vm); cout << "after store" << endl; po::notify(vm); if (vm.count("limit")) { cout << "limit=" << vm["limit"].as<size_t>() << endl; }//--version }//try catch (exception& e) { cerr << e.what() << endl; return 1; }//exception catch (...) { cerr << "unknown exception." << endl; return 1; }//... return 0; }//main() //=========================================

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Re: [Boost-users] Bind, lambda and how to chain relative function calls
by Kerner, Jacques 25 Nov '05

25 Nov '05

Erratum : Please replace ReturnArg by AdaptToReturningFunction in the AdaptToReturningFunction class definition. JK -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Kerner, Jacques Sent: Thursday, November 24, 2005 4:54 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Hi, My example got a little bit more complicated. The Car::GetRigidBody function is : void Car::GetRigidBody(RigidBody & rb) instead of RigidBody & Car::GetRigidBody() So I have to write : bind ( &Position::GetX, bind ( &RigidBody::GetPosition, AdaptToReturningFunction<RigidBody>(bind(&Car::GetRigidBody, &car)) ) ) With a functor named AdaptToReturningFunction that transforms the first signature to the second : template<typename T> class AdaptToReturningFunction { public: ReturnArg(boost::function<void (T &)> f) : mF(f) {} T operator()() {T t; mF(t); return t;} private: boost::function<void (T &)> mF; }; Is there a simpler and better way of doing it without having to define AdaptToReturningFunction ? What if RigidBody was purely abstract (interface) ? Thank you. Jacques Kerner. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Thursday, November 24, 2005 3:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Kerner, Jacques wrote: > Hi, > > I would like to create a functor for calling functions in a chain like > this : > > car.GetRigidBody().GetPosition().GetX() > > What is the best way to do that using bind (and lambda ?) > > The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but > then I am a bit stuck. Note that I don't want to store the result of > car.GetRigidBody(). I want the final functor to call all the functions > everytime its operator() is called. So > > > bind ( > &Position::GetX, > &bind ( > &RigidBody::GetPosition, > &bind ( > > &Car::GetRigidBody, > &car > )() > )() > ) > > would not be acceptable... Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) ) _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users _______________________________________________ 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] Bind, lambda and how to chain relative function calls
by Kerner, Jacques 25 Nov '05

25 Nov '05

Hi, My example got a little bit more complicated. The Car::GetRigidBody function is : void Car::GetRigidBody(RigidBody & rb) instead of RigidBody & Car::GetRigidBody() So I have to write : bind ( &Position::GetX, bind ( &RigidBody::GetPosition, AdaptToReturningFunction<RigidBody>(bind(&Car::GetRigidBody, &car)) ) ) With a functor named AdaptToReturningFunction that transforms the first signature to the second : template<typename T> class AdaptToReturningFunction { public: ReturnArg(boost::function<void (T &)> f) : mF(f) {} T operator()() {T t; mF(t); return t;} private: boost::function<void (T &)> mF; }; Is there a simpler and better way of doing it without having to define AdaptToReturningFunction ? What if RigidBody was purely abstract (interface) ? Thank you. Jacques Kerner. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Thursday, November 24, 2005 3:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Kerner, Jacques wrote: > Hi, > > I would like to create a functor for calling functions in a chain like > this : > > car.GetRigidBody().GetPosition().GetX() > > What is the best way to do that using bind (and lambda ?) > > The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but > then I am a bit stuck. Note that I don't want to store the result of > car.GetRigidBody(). I want the final functor to call all the functions > everytime its operator() is called. So > > > bind ( > &Position::GetX, > &bind ( > &RigidBody::GetPosition, > &bind ( > > &Car::GetRigidBody, > &car > )() > )() > ) > > would not be acceptable... Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) ) _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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How to build the boost library
by Sui Tam 24 Nov '05

24 Nov '05

Hi, I am trying to use the boost C++ serialization library. Can you point me to how I can build the library on the itanium system? Also I would like to get some leads as to how I should start. I try using the VC project files, however, I see compilation errors. Sui --------------------------------- Yahoo! Music Unlimited - Access over 1 million songs. Try it free.

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Problem with boost::pool on MSVC8
by Georgios Diamantopoulos 24 Nov '05

24 Nov '05

Dear all, I am encountering a crash due to corrupted memory (_CrtIsValidHeapPointer assertion) when running a project that uses boost::fast_pool_allocator with std::list. This project is using mixed code. More specifically: - There is a native static library project named "KLT" which uses boost::fast_pool_allocator - klt.h is included in another, mixed (native+CLR) project where objects from klt.h are created The stack trace is shown below. It seems that this is a problem with static initialization of an object boost::pool makes. Does anyone have any idea as to what might be the problem? I am using the latest boost 1.33.1 compiled fresh with VC8. Thanks in advance. Best regards, Georgios STACK TRACE > msvcr80d.dll!_msize_dbg(void * pUserData=0xd0ac4d40, int nBlockUse=2) Line 1414 + 0x30 bytes C++ msvcr80d.dll!_dllonexit_nolock(int (void)* func=0x004219e0, void (void)* * * pbegin=0x0012e828, void (void)* * * pend=0x0012e820) Line 295 + 0xd bytes C msvcr80d.dll!__dllonexit(int (void)* func=0x004219e0, void (void)* * * pbegin=0x0012e828, void (void)* * * pend=0x0012e820) Line 273 + 0x11 bytes C MyVideoTool.exe!_onexit(int (void)* func=0x004219e0) Line 110 + 0x11 bytes C MyVideoTool.exe!atexit(void (void)* func=0x004219e0) Line 127 + 0x9 bytes C MyVideoTool.exe!boost::details::pool::singleton_default<boost::singleton_pool<boost::fast_pool_allocator_tag,80,boost::default_user_allocator_new_delete,boost::details::pool::win32_mutex,32>::pool_type>::instance() Line 83 + 0x32 bytes C++ MyVideoTool.exe!boost::details::pool::singleton_default<boost::singleton_pool<boost::fast_pool_allocator_tag,80,boost::default_user_allocator_new_delete,boost::details::pool::win32_mutex,32>::pool_type>::object_creator::object_creator() Line 66 + 0x28 bytes C++ MyVideoTool.exe!`dynamic initializer for 'boost::details::pool::singleton_default<boost::singleton_pool<boost::fast_pool_allocator_tag,80,boost::default_user_allocator_new_delete,boost::details::pool::win32_mutex,32>::pool_type>::create_object''() Line 50 + 0x28 bytes C++ [Managed to Native Transition] MyVideoTool.exe!_initterm(void** pfbegin = 0x00422214, void pfend = ) Line 130 C++ MyVideoTool.exe!<CrtImplementationDetails>::LanguageSupport::InitializeNative() Line 534 C++ MyVideoTool.exe!<CrtImplementationDetails>::LanguageSupport::_Initialize() Line 680 C++ MyVideoTool.exe!<CrtImplementationDetails>::LanguageSupport::Initialize() Line 824 + 0x9 bytes C++ MyVideoTool.exe!?.cctor@@$$FYMXXZ() Line 871 + 0x9 bytes C++ [Frames below may be incorrect and/or missing, no symbols loaded for mscorwks.dll] ntdll.dll!7c91b686() ntdll.dll!7c949e61() ntdll.dll!7c91b5f4()

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Serialization of ptr_container
by Merrill Cornish 24 Nov '05

24 Nov '05

Since I can find no specific mention that ptr_container classes can be serialized, I assume that means they can NOT be serialized. Right? Merrill

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about serialization
by czhu06-1＠yahoo.com.cn 24 Nov '05

24 Nov '05

Hi, I am using MSVC 7.1, and I need to use the boost_1_33_0 Serialization Library. But I can't make libs\serialization\example\demo.cpp work. It always pops memory alloc error. Can anybody kindly tell me how to make serialization library work? Thanks. --------------------------------- 雅虎邮箱超强增值服务－2G超大空间、pop3收信、邮件提醒

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Re: [Boost-users] Bind, lambda and how to chain relative function calls
by Kerner, Jacques 24 Nov '05

24 Nov '05

Thank you. I did not realize that it could work that way too. That's really great!!! Jacques. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Thursday, November 24, 2005 3:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Kerner, Jacques wrote: > Hi, > > I would like to create a functor for calling functions in a chain like > this : > > car.GetRigidBody().GetPosition().GetX() > > What is the best way to do that using bind (and lambda ?) > > The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but > then I am a bit stuck. Note that I don't want to store the result of > car.GetRigidBody(). I want the final functor to call all the functions > everytime its operator() is called. So > > > bind ( > &Position::GetX, > &bind ( > &RigidBody::GetPosition, > &bind ( > > &Car::GetRigidBody, > &car > )() > )() > ) > > would not be acceptable... Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) ) _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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linking with visual studio .net 2003 and regex
by louis 24 Nov '05

24 Nov '05

Hi, I built regex as a library using the source (UNICODE char set but not with ICU support). I am able to link to the library in a console program but when I try and link to the library from an MFC project I get a bunch of unresolved errors. Here is one of them: myapp error LNK2019: unresolved external symbol "public: class boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > > & __thiscall boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > >::assign(wchar_t const *,wchar_t const *,unsigned int)" (?assign@?$basic_regex@_WU?$regex_traits@_WV?$w32_regex_traits@_W@boost@@@boost@@@boost@@QAEAAV12@PB_W0I@Z) referenced in function "public: class boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > > & __thiscall boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > >::assign(wchar_t const *,unsigned int)" (?assign@?$basic_regex@_WU?$regex_traits@_WV?$w32_regex_traits@_W@boost@@@boost@@@boost@@QAEAAV12@PB_WI@Z) Any help would be greatly appreciated

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Serialization documentation suggestion
by Merrill Cornish 24 Nov '05

24 Nov '05

It would be useful to Boost serialization users if there were a section in the serialization documentation titled, say, "Serialization Data Types" with a list such as * all built-in C++ data primitives * all STL containers * all Boost smart pointer types * boost::variant and any other Boost types that can be serialized (boost::any? boost::mutex? etc.) As it stands now, the serialization documentation mentions some, but the comments are scattered. The documentation is silent on other Boost-created data types. Merrill

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