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Fast Network IO buffer?
by Olaf van der Spek 03 Mar '06

03 Mar '06

Hi, I'm searching for a fast network IO buffer, but Boost doesn't appear to provide one. Does anyone know why not? What would be the recommended solution instead?

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Re: [Boost-users] [multi_index] Trouble using MultiIndexwith VisualStudio 2005
by Andrew Holden 03 Mar '06

03 Mar '06

I figured it was a newbie mistake like that. Thanks for your help! Andrew Holden Charter Oak Investment Systems, Inc. -----Original Message----- From: JOAQUIN LOPEZ MU?Z [mailto:joaquin@tid.es] Sent: Thursday, March 02, 2006 4:39 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] [multi_index] Trouble using MultiIndexwith VisualStudio 2005 ----- Mensaje original ----- De: Andrew Holden <aholden(a)charteroaksystems.com> Fecha: Jueves, Marzo 2, 2006 9:50 pm Asunto: [Boost-users] [multi_index] Trouble using MultiIndex with VisualStudio 2005 > I am trying to compile a program using MultiIndex from Boost 1.33.1 > using Visual Studio 2005 (MSVC8). So far, I can not get it to compile > with fewer than 100 errors. Does anyone know what I might be doing > wrong? > > I have attached the source file I am using to test, as well as the > output from my compiler. Hello Andrew, You have to add #include <boost/multi_index/ordered_index.hpp> so as to bring ordered indices in. Other than this, a visual inspection of your code does not reveal further problems, please let me know otherwise. If this is any consolation to you, you're not the first one stumbling into this problem, thus I've explicitly added the necessary #includes in the main snippets of the documentation for the next release, as can be seen for instance in the preview link: http://boost- consulting.com/boost/libs/multi_index/doc/tutorial/basics.html#multiple _sort Thanks for trying Boost.MultiIndex, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Boost License Question
by Glenn Thorne 03 Mar '06

03 Mar '06

I want to use several of the Boost libraries in a project I'm working on and am a little concerned over a potential conflict between the website information and the Boost license language. On the website it mentions that the license is "not viral" but the language in the Boost license states that ".. and to permit third-parties to whom the Software is furnished to do so, all subject to the following: The copyright notices in the Software and this entire statement, including the above license grant, this restriction and the following disclaimer, must be included in all copies of the Software, in whole or in part, and all derivative works of the Software, unless such copies or derivative works are solely in the form of machine-executable object code generated by a source language processor." It seems to me that since derivative works must be subject to the license, any code I link with the Boost libraries would also be subject to the Boost license. Am I reading this correctly or is there a different interpretation? Thanks! Glenn

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Re: [Boost-users] serialization: again a problem, failing to serializea std::vector of pointers
by RIVASSEAU Jean Noel 03 Mar '06

03 Mar '06

Hello Jean-Noël, maybe you can try using the proposed patch at http://lists.boost.org/Archives/boost/2006/02/101539.php and report your results. I've got the hunch your problem might be related to the issue dealt with at that post. At this url, I have found two hpp files. I replaced the ones that originally came with the Boost 1.3.1 distribution with these ones. I still have an error, at the same line, however it is: C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: no type named `type' in `struct boost::serialization::type_info_implementation<std::vector<MemberVariableSpecification*, std::allocator<MemberVariableSpecification*> > >' C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: `get_instance' is not a member of `<declaration error>' While it was: C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: incomplete type `boost::serialization::extended_type_info_null<std::vector<MemberVariableSpecification*, std::allocator<MemberVariableSpecification*> > >' used in nested name specifier with the original code from Boost 1.33.1. So this patch effectively changed something, but it still not working. I've not read the entire thread at your url since I did not understand it (it was about a specific compiler issue ??). Any ideas? Jean-Noël

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Assigning smart/shared_ptr pointer to C struct
by adharankar＠verizon.net 03 Mar '06

03 Mar '06

Greetings... What is wrong in assigning a smart/shared_ptr pointer in C++ code to a struct which may then be passed to a C code? Consider the sample source towards the end of this email. When I run this through valgrind (memory debugger, see http://www.valgrind.org) it points out potential problem (also listed after the sample code). It also seems to cause memory corruption. What may be a better way of saving/storing a smart/shared_ptr pointer in a C struct (and yet have the reference counter in the smart/shared_ptr pointer increment)? Best regards, -Arun. --------------------- The sample program -------------------- #include <boost/shared_ptr.hpp> class A { public: int val; }; typedef boost::shared_ptr<A> APtr; struct S { public: APtr aptr; }; struct S *func(void) { A *a = new A; a->val = 12; APtr aptr(a); struct S *s = (struct S *)malloc(sizeof(struct S)); s->aptr = aptr; return s; } int main(int ac, char *av[]) { struct S *s; s = func(); APtr aptr = s->aptr; } ------------------------------------------------------ Output from valgrind: Conditional jump or move depends on uninitialised value(s) at 0x8048A20: boost::detail::shared_count::operator= (boost::detail::shared_count const&) (shared_count.hpp:179) by 0x80487FD: boost::shared_ptr<A>::operator= (boost::shared_ptr<A> const&) (shared_ptr.hpp:148) by 0x80486E8: func() (c.cpp:22) by 0x8048742: main (c.cpp:30)

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Re: [Boost-users] is_polymorphic addition please
by Ray Hilton 03 Mar '06

03 Mar '06

>I'm not entirely sure what you mean here: do you mean "if class X is only >polymorphic because of base class Y, then don't count X as polymorphic"? >If so then I don't see any way to implement that, anyone else? >John. Yes, that is what i meant. A lot of stuff that is inherited will never be used polymorphically, like boost::noncopyable, binary_funciton<> type classes that only bring in typedefs etc. It would we be of great help im sure. Anyway, sorry for hijacking a thread. Ray Hilton, _________________________________________________________________ Dont just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/

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Re: [Boost-users] serialization: again a problem, failing to serializea std::vector of pointers
by Joaquín Mª López Muñoz 03 Mar '06

03 Mar '06

RIVASSEAU Jean Noel ha escrito: > Sorry, I removed the QString stuff, so it should make more sense to you now. I have attached the cleaned up code. If you try to compile it, it will fail on the file > > ClassSpecification_serialization.cc > > with a message saying that there is a problem with the extended_type_info of std::vector< MemberVariableSpecification *> (since a member of ClassSpecification, which I serialize, is of this type). > > Don't pay attention as to what are my real intentions on this example code, this comes from my real project, and it would be long to explain. Just let's say that, no, I am not trying to store class id information into the archive, it is just that one data member of one of object that I need to serialize has the name class_id (but it could be named "walnut_field", the code would be the same). > > This small example code is just there to show you the bug that occurs. > > As for the mixing of type systems (no_rtti and type_id), it was just a test to see if that would change things. I have reverted it back in the attached code (only no_rtti used) but it still does not work. > Jean-Noël, maybe you can try using the proposed patch at http://lists.boost.org/Archives/boost/2006/02/101539.php and report your results. I've got the hunch your problem might be related to the issue dealt with at that post. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Can I use STL transform and lambda to add 2 int vector?
by Meryl Silverburgh 03 Mar '06

03 Mar '06

Hi, I would like to know if I can use transform and lambda to add 2 int vector and save the result into a third int vector vector<int> src1; vector<int> src2; vector<int> result // put the value of src1 and src2

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New User With Busted Compiler
by V. Thane Norton III 03 Mar '06

03 Mar '06

I have just started using Boost, and am really enjoying using it, especially uBLAS. Unfortunately, my production code needs to use GCC 3.3 (for marketing reasons) which the Boost 1.33.1 uBLAS does not support. What is the latest version of Boost that I can use for uBLAS on GCC 3.3? Is there some hackery that I can perform to get 1.33.1 working? ----------------------------------------- V. Thane Norton III Macintosh Software Engineer Wacom Technology Corporation phone: 360.896.9833 x172 mailto:tnorton@wacom.com

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Re: [Boost-users] [multi_index] Trouble using MultiIndex with VisualStudio 2005
by JOAQUIN LOPEZ MU?Z 02 Mar '06

02 Mar '06

----- Mensaje original ----- De: Andrew Holden <aholden(a)charteroaksystems.com> Fecha: Jueves, Marzo 2, 2006 9:50 pm Asunto: [Boost-users] [multi_index] Trouble using MultiIndex with VisualStudio 2005 > I am trying to compile a program using MultiIndex from Boost 1.33.1 > using Visual Studio 2005 (MSVC8). So far, I can not get it to compile > with fewer than 100 errors. Does anyone know what I might be doing > wrong? > > I have attached the source file I am using to test, as well as the > output from my compiler. Hello Andrew, You have to add #include <boost/multi_index/ordered_index.hpp> so as to bring ordered indices in. Other than this, a visual inspection of your code does not reveal further problems, please let me know otherwise. If this is any consolation to you, you're not the first one stumbling into this problem, thus I've explicitly added the necessary #includes in the main snippets of the documentation for the next release, as can be seen for instance in the preview link: http://boost- consulting.com/boost/libs/multi_index/doc/tutorial/basics.html#multiple _sort Thanks for trying Boost.MultiIndex, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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