- Boost-users - lists.boost.org

[GCC-XML] errors with boost header files
by Jenny Duan (TT) 06 Dec '07

06 Dec '07

Gccxml does not seem to be able to handle the boost/mpl/and.hpp file. I have the most recent gccxml (retrieved the source tree and built it) and 1.34.1 boost. I was told by GCCXML support that boost/config/compiler/gcc_xml.hpp needs to exist in order for GCXXML to process boost header files and this file does exist. Please see the content of it below. Can somebody please tell me why it's not working for me? Your help would be greatly appreciated. Thanks, Jenny ----------------------------------------------------------- // Copyright Aleksey Gurtovoy 2000-2004 // // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // // See http://www.boost.org/libs/mpl for documentation. // $Source: /cvsroot/boost/boost/boost/mpl/and.hpp,v $ // $Date: 2004/09/02 15:40:41 $ // $Revision: 1.5 $ #include <boost/mpl/aux_/config/use_preprocessed.hpp> #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ && !defined(BOOST_MPL_PREPROCESSING_MODE) # include <boost/mpl/bool.hpp> # include <boost/mpl/aux_/nested_type_wknd.hpp> # include <boost/mpl/aux_/na_spec.hpp> # include <boost/mpl/aux_/lambda_support.hpp> // agurt, 19/may/04: workaround a conflict with <iso646.h> header's // 'or' and 'and' macros, see http://tinyurl.com/3et69; 'defined(and)' // has to be checked in a separate condition, otherwise GCC complains // about 'and' being an alternative token #if defined(_MSC_VER) #if defined(and) # pragma push_macro("and") # undef and # define and(x) #endif #endif # define BOOST_MPL_PREPROCESSED_HEADER and.hpp # include <boost/mpl/aux_/include_preprocessed.hpp> #if defined(_MSC_VER) #if defined(and) # pragma pop_macro("and") #endif #endif #else # define AUX778076_OP_NAME and_ # define AUX778076_OP_VALUE1 false # define AUX778076_OP_VALUE2 true # include <boost/mpl/aux_/logical_op.hpp> #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS #endif // BOOST_MPL_AND_HPP_INCLUDED ------------------------------------------------ $gccxml -fxml-start=./xml_start_symbols.txt --gccxml-gcc-options ./compiler_optons.txt world.h -fxml=world.xml --- snip--- In file included from G:/corebuilds/7.0.x/misc/stream/1.3/dev/stream/helpers.h:42, from ../common/world.h:33: C:/Program Files/boost/boost_1_34_1/boost/mpl/and.hpp:32:13: error: operator "defined" requires an identifier C:/Program Files/boost/boost_1_34_1/boost/mpl/and.hpp:32:13: error: ("and" is an alternative token for "&&" in C++) C:/Program Files/boost/boost_1_34_1/boost/mpl/and.hpp:32:16: error: missing '(' in expression C:/Program Files/boost/boost_1_34_1/boost/mpl/and.hpp:43:13: error: operator "defined" requires an identifier C:/Program Files/boost/boost_1_34_1/boost/mpl/and.hpp:43:13: error: ("and" is an alternative token for "&&" in C++) C:/Program Files/boost/boost_1_34_1/boost/mpl/and.hpp:43:16: error: missing '(' in expression In file included from G:/corebuilds/7.0.x/misc/stream/1.3/dev/stream/helpers.h:44, from ../common/world.h:33: C:/Program Files/boost/boost_1_34_1/boost/mpl/or.hpp:33:13: error: operator "defined" requires an identifier C:/Program Files/boost/boost_1_34_1/boost/mpl/or.hpp:33:13: error: ("or" is an alternative token for "||" in C++) C:/Program Files/boost/boost_1_34_1/boost/mpl/or.hpp:33:15: error: missing '(' in expression C:/Program Files/boost/boost_1_34_1/boost/mpl/or.hpp:44:13: error: operator "defined" requires an identifier C:/Program Files/boost/boost_1_34_1/boost/mpl/or.hpp:44:13: error: ("or" is an alternative token for "||" in C++) C:/Program Files/boost/boost_1_34_1/boost/mpl/or.hpp:44:15: error: missing '(' in expression In file included from G:/corebuilds/7.0.x/misc/stream/1.3/dev/stream/compression.h:28, from G:/corebuilds/7.0.x/misc/stream/1.3/dev/stream/stream_integer_wrapper.h: 32, from G:/corebuilds/7.0.x/misc/stream/1.3/dev/stream/helpers.h:55, from ../common/world.h:33: G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/osabstraction/tt_crt_defs.h:3 2:2: error: #error _USE_32BIT_TIME_T must be defined for TT applications In file included from G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/coreutils/tt_systypes.h:28, from G:/corebuilds/7.0.x/misc/stream/1.3/dev/stream/streamable.h:38, from ../common/world.h:34: G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/osabstraction/tt_win_defs.h:3 1:2: error: #error you must include tt_win_defs.h as the first header file in all compilands to ensure correct settings. G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/osabstraction/tt_win_defs.h:5 5:21: error: afx.h: No such file or directory G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/osabstraction/tt_win_defs.h:5 6:24: error: afxwin.h: No such file or directory G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/osabstraction/tt_win_defs.h:5 7:23: error: afxmt.h: No such file or directory In file included from C:/Program Files/Microsoft Visual Studio 8/VC/include/fvec.h:43, from C:/Program Files/Microsoft Visual Studio 8/VC/include/dvec.h:37, from C:/Program Files/Microsoft Visual Studio 8/VC/include/intrin.h:31, from G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/coreutils/interlocked.h:29, from G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/coreutils/TTCriticalSectionBa se.h:30, from G:/corebuilds/7.0.x/misc/coreutils/1.2/dev/coreutils/ttcriticalsection.h :28, from ../common/world.h:38: C:/Program Files/Microsoft Visual Studio 8/VC/include/ivec.h:178:1: error: pasting "&" and "vec" does not give a valid preprocessing token C:/Program Files/Microsoft Visual Studio 8/VC/include/ivec.h:178:1: error: pasting "+" and "0" does not give a valid preprocessing token C:/Program Files/Microsoft Visual Studio 8/VC/include/ivec.h:179:1: error: pasting "&" and "vec" does not give a valid preprocessing token C:/Program Files/Microsoft Visual Studio 8/VC/include/ivec.h:179:1: error: pasting "+" and "1" does not give a valid preprocessing token C:/Program Files/Microsoft Visual Studio 8/VC/include/ivec.h:221:1: error: pasting "&" and "vec" does not give a valid preprocessing token --- snip---

1 0

shared_ptr and -> operator
by Damien Hocking 06 Dec '07

06 Dec '07

All, I'm replacing some standard C++ pointers with shared_ptrs. I've run into a small problem using shared_ptr with a pointer to member. With a really simple class: class TestObject{ public: TestObject():value_(-5.4){} ~TestObject(); double value_; }; Trying this: double TestObject::*dptr = 0; shared_ptr<TestObject> testPtr = shared_ptr<TestObject>(new TestObject()); testPtr->*dptr = 5.7456; On VS2005, I get an error on the ->*: error C2296: '->*' : illegal, left operand has type 'boost::shared_ptr<T>' This line is fine: (*testPtr).*dptr = 5.7456; Can anyone tell me why the compiler isn't converting boost::shared_ptr<TestObject> to a TestObject* through shared_ptr::operator-> ? I can live with dereferencing the testPtr, but I'd like to understand what's going on. Damien

3 3

boost::bind upgrading from 1.33.1 to 1.34.1 problem, part2
by sj＠sjcomp.com 06 Dec '07

06 Dec '07

Hello, Thanks Eric and Peter for the help with my previous question. Now I have another question. 1.34.1 does not allow me to compile the following code (it was fine on 1.33.1): struct CNode {void GetName(){}}; int main(int argc, char **argv){ typedef std::map<int, CNode> TPNodes; TPNodes Children; std::for_each( Children.begin(), Children.end(), boost::bind( &CNode::GetName, // Problem here boost::bind(&TPNodes::value_type::second,_1))); return 0; } I get this error: error C2440: 'argument' : cannot convert from 'const CNode *__w64 ' to 'CNode *const ' c:\src\boost_1_34_1\boost\bind\mem_fn_template.hpp 35 The code works if I have a map with pointers, but if I have instances then I have the error. It looks like I get a const value which was fine when a pointer was used. The question is how do I use algorithm on maps when I want to use only key or value? Thanks. -- Regards, Alexander. http://sjcomp.com

2 1

Boost & Singletons?
by Robert Dailey 05 Dec '07

05 Dec '07

Hi, I was wondering if the boost library had a class that I could derive my classes from to declare a singleton. For example: class MyClass : public boost::singleton<MyClass> {}; Something like that. I noticed there's a singleton.hpp in "boost\pool\detail", however this seems like an odd place for such a common and useful class. I'm actually a bit scared to use anything in a 'detail' folder, as usually (at least to me) that means private code or implementation details (not to be used). Is there a singleton type class in boost to help simplify the process of creating a singleton? Thanks.

5 10

shared_from_this from constructor
by Daniel P Furlani 05 Dec '07

05 Dec '07

Is there a way to call shared_from_this() from a constructor? It seems like a bad idea. Since the object is still being created, it would be difficult for anything to have a shared_ptr to it. And that violates a documented precondition of shared_from_this(): "There must exist at least one shared_ptr instance p that owns t." If it's not possible or just a bad idea, how about a note in the documentation at: http://www.boost.org/libs/smart_ptr/enable_shared_from_this.html to say something like: "Calling shared_from_this from a constructor will not work, since there is no shared_pointer which owns the object."? -dan

1 0

Re: [Boost-users] [asio] how to specify a timeout?
by Andrea Bartoli 05 Dec '07

05 Dec '07

Use an asio::deadline_timer Example: asio::io_service m_ioService; asio::deadline_timer * m_timer; m_timer = new asio::deadline_timer(m_ioService); m_timer->expires_from_now( boost::posix_time::seconds(t) ); m_timer->async_wait( boost::bind(&Foo:handle_timeout, this, asio::placeholders::error) ); asio::async_read( *m_socket, asio::buffer( m_msg.header(), m_msg.header_length() ), boost::bind(&Foo::handle_read_header, this, asio::placeholders::error) ); This is a cut and paste from my code, if it isn't so clear I'll explain deeply. Tks ----- Messaggio originale ----- Da: Arkadiy Vertleyb <vertleyb(a)hotmail.com> A: boost-users(a)lists.boost.org Inviato: Lunedì 3 dicembre 2007, 20:05:15 Oggetto: [Boost-users] [asio] how to specify a timeout? Hi all, Is it possible in asio to supply a timeout for a read/write operation? Thanks, Arkadiy _________________________________________________________________ You keep typing, we keep giving. Download Messenger and join the i’m Initiative now. http://im.live.com/messenger/im/home/?source=TAGLM _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users ___________________________________ L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail: http://it.docs.yahoo.com/nowyoucan.html

3 3

boost [pointer container, lambda, bind]
by chun ping wang 05 Dec '07

05 Dec '07

Say lets say i have container of regular type T. And lets say i want to insert them into ptr_vector by getting the keys. template< typename MapType, typename OutputIterator > OutputIterator getKeys(const MapType& map, OutputIterator out ) { typedef typename MapType::value_type map_type; typedef typename OutputIterator::value_type out_type; std::for_each(map.begin(), map.end(), boost::lambda::var(*out)++ = boost::lambda::construct<out_type>(boost::lambda::bind(&map_type::first, boost::lambda::_1)) ); return out; } Is it possble to do this. Assuming outputiterator is implemented for ptr_vector.

2 1

[review] Fast track formal review of Forward library begins today
by John Torjo 05 Dec '07

05 Dec '07

Hi all, The formal review of the Boost.Functional/Forward library, proposed by Tobias Schwinger, begins today : Boost.Functional/Forward provides decorator function objects to have an n-ary, generic function object accept both RValues and mutable LValues. An exponential number of overloads is needed with C98, so redundant solutions are highly undesirable. Functional/Forward is a reusable implementation asking to live in a central place in Boost. Download it from here: http://www.boost-consulting.com/vault/index.php?action=downloadfile&filenam… http://www.boost-consulting.com/vault/index.php?&direction=0&order=&directo… The documentation is included in the .zip file, in the usual place: forward/libs/functional/forward/doc/html/index.html What to include in Review Comments ================================== Your comments may be brief or lengthy, but basically the Review Manager needs your evaluation of the library. If you identify problems along the way, please note if they are minor, serious, or showstoppers. Here are some questions you might want to answer in your review: * What is your evaluation of the design? * What is your evaluation of the implementation? * What is your evaluation of the documentation? * What is your evaluation of the potential usefulness of the library? * Did you try to use the library? With what compiler? Did you have any problems? * How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? * Are you knowledgeable about the problem domain? And finally, every review should answer this question: * Do you think the library should be accepted as a Boost library? Be sure to say this explicitly so that your other comments don't obscure your overall opinion. We're looking forward to your evaluation of this Boost candidate! John Torjo - Review Manager - -- http://John.Torjo.com -- C++ expert ... call me only if you want things done right

6 8

Re: [Boost-users] build boost.python tutorial "hello world" without bjam
by damny＠web.de 05 Dec '07

05 Dec '07

thanks for your replay, but nothing happens when i reorder the compile command. like before, the same error messages appear. are there any other ideas? i'm at a loss. daniel > -----Ursprüngliche Nachricht----- > Von: boost-users(a)lists.boost.org > Gesendet: 03.12.07 09:50:12 > An: boost-users(a)lists.boost.org > Betreff: Re: [Boost-users] build boost.python tutorial "hello world" without bjam > > damny(a)web.de wrote: > > hi there, > > > > for some days i try to build the boost.python tutorial "hello world" without bjam on winxp by using mingw. > > so i wrote a *.bat-file: > > > > // --- snip ----------------------------------------------------------------------------- > > @echo off > > SETLOCAL > > SET DIR_MINGW=c:\development_compiler\mingw\ > > SET DIR_BOOST=c:\development_compiler\_boost\ > > SET DIR_PYTHN=c:\development_compiler\python25\ > > SET DIR_PRJCT=%~dp0 > > SET NME_PRJCT=hello > > SET CC=c:\development_compiler\mingw\bin\g++.exe > > SET INCL=-I%DIR_BOOST%include\boost-1_34_1 -I%DIR_PYTHN%include -I%DIR_MINGW%include > > SET LIBS=-L%DIR_BOOST%lib -L%DIR_PYTHN%libs -L%DIR_MINGW%lib > > %CC% -O0 -shared %INCL% %LIBS% -lboost_python-mgw34-s-1_34_1 -lpython25 ^ > > %DIR_PRJCT%%NME_PRJCT%.cpp -o %NME_PRJCT%.pyd > > ENDLOCAL > > // --- snip ----------------------------------------------------------------------------- > > > > this works fine. but nevertheless it produces errors. > > > > // --- snip ----------------------------------------------------------------------------- > > D:\Temp\boost_test>c:\development_compiler\mingw\bin\g++.exe -O0 - shared -Ic:\development_compiler\_boost\include\boost-1_34_1 -Ic:\development_compiler\python25\include -Ic:\development_compiler\mingw\include -Lc:\development_compiler\_boost\lib -Lc:\development_compiler\python25\libs -Lc:\development_compiler\mingw\lib -lboost_python-mgw34-mt-s-1_34_1 -lpython25 D:\Temp\boost_test\hello.cpp -o hello.pyd > > This is just a wild guess, but what happens when you reorder your compile > command, putting the libraries _after_ the source file, like this: > > g++.exe -O0 - shared \ > -Ic:\development_compiler\_boost\include\boost-1_34_1 \ > -Ic:\development_compiler\python25\include \ > -Ic:\development_compiler\mingw\include \ > D:\Temp\boost_test\hello.cpp \ > -Lc:\development_compiler\_boost\lib \ > -Lc:\development_compiler\python25\libs \ > -Lc:\development_compiler\mingw\lib \ > -lboost_python-mgw34-mt-s-1_34_1 -lpython25 \ > -o hello.pyd > > [...] > > Markus > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > _______________________________________________________________________ Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 3 Monate kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=022220

2 1

boost::bind upgrading from 1.33.1 to 1.34.1 problem
by sj＠sjcomp.com 05 Dec '07

05 Dec '07

Hello, I'm upgrading from boost 1.33.1 to 1.34.1 and upgrade does not let me compile the following code: // CRefCounted provides functionality to CRefPtr to have // referenced pointers struct CNode: public CRefCounted { void GetName(){} }; int main(int argc, char **argv){ typedef CRefPtr<CNode> CPNode; typedef std::multimap<std::string, CPNode> TPNodes; TPNodes Children; std::for_each( Children.begin(), Children.end(), boost::bind( &CNode::GetName, // problem in the next line boost::bind(&TPNodes::value_type::second,_1))); return 0; } I get the following messages from MSVC8.0: error C2784: 'T *boost::get_pointer(const boost::shared_ptr<T> &)' : could not deduce template argument for 'const boost::shared_ptr<T> &' from 'const CPNode' error C2784: 'T *boost::get_pointer(const std::auto_ptr<_Ty> &)' : could not deduce template argument for 'const std::auto_ptr<_Ty> &' from 'const CPNode' error C2784: 'T *boost::get_pointer(T *)' : could not deduce template argument for 'T *' from 'const CPNode' If I replace CRefPtr with boost::shared_ptr the code compiles. Hence I assume the problem is with the way I implemented CRefPtr class. Here it is: template<typename T> class CRefPtr { private: T* m_ptr; public: CRefPtr(T* ptr=NULL) :m_ptr(NULL){ *this=ptr; } CRefPtr(const CRefPtr<T>& ptr) :m_ptr(NULL){ *this=ptr; } ~CRefPtr() { if (m_ptr) { m_ptr->DecrementReference(); m_ptr=NULL; } } CRefPtr<T>& operator=(T* ptr) { if(ptr!=m_ptr) { if(m_ptr) { m_ptr->DecrementReference(); } m_ptr=ptr; if(m_ptr) { m_ptr->IncrementReference(); } } return *this; } CRefPtr<T>& operator=(const CRefPtr<T>& ptr){*this=ptr.m_ptr;return *this;} T* operator->() const{return m_ptr;} T& operator*() const{return *m_ptr;} bool operator<(const CRefPtr<T>& obj)const{if(obj.m_ptr<this->m_ptr)return true;else return false;} T* get() const{return m_ptr;} operator T*()const{return m_ptr;} }; What am I missing? Some explanation on why I went this route. I am using CRefPtr instead of shared_ptr because full CNode class has a member CNode* m_Parent. I could not figure out how to use weak pointers, but if I use CRefPtr I can assign a simple pointer returned by GetParent() to a CPNode and it would still work, while I could not achieve this result with shared_ptr. Maybe someone can direct me to a place which explains how to handle such situations properly with shared_ptr. Thanks. -- Regards, Alexander. http://sjcomp.com

3 2