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[Math] errno on WCE
by Paul Heil 02 Sep '08

02 Sep '08

I'm compiling the Boost 1.36.0 Math library for Windows Mobile 5 using Visual Studio 2008. I have STLPort-5.1.5 installed. When I get to anything requiring errno support, I get compiler errors as below: compile-c-c++ bin.v2\libs\math\build\msvc-WM5\debug\link-static\runtime-link-static\stdlib-stlport\threading-multi\acosh.obj acosh.cpp Unknown EVC++ compiler version - please run the configure tests and report the results eMbedded Visual C++ 3 and .NET don't have a errno.h header; STLport won't include native errno.h here C:\boost\boost_1_36_0\boost/math/policies/error_handling.hpp(149) : error C2065: 'errno_t' : undeclared identifier [...] C:\boost\boost_1_36_0\boost/math/policies/error_handling.hpp(149) : error C2065: 'EDOM' : undeclared identifier [..] C:\boost\boost_1_36_0\boost/math/policies/error_handling.hpp(233) : error C2065: 'ERANGE' : undeclared identifier In the STLPort errno.h header, there's a section: #ifdef _STLP_WCE // only show message when directly including this file in a non-library build # if !defined(__BUILDING_STLPORT) && (_STLP_OUTERMOST_HEADER_ID == 0x205) # pragma message("eMbedded Visual C++ 3 and .NET don't have a errno.h header; STLport won't include native errno.h here") #define errno errno_t I can add an "#include<crtdefs.h>" to get errno_t support, but that just declares it as "typedef int errno_t;". Which, of course, gives me " boost/math/policies/error_handling.hpp(149) : error C2513: 'int' : no variable declared before '=' " errors as that isn't the way Boost expects to be able to use errno. What can I do to either get errno support under CE or remove the dependency of that feature without breaking Boost? Thanks, PaulH

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[Serialization] Compatibility of text archives in 1.36 and 1.34
by Glenn Ramsey 02 Sep '08

02 Sep '08

Hi, I recently upgraded from boost 1.34 to boost 1.36. A version of my application built with 1.36 can read the text archives produced by 1.34, but a version of my application built with 1.34 cannot read the text archives produced by 1.36. Is this the behaviour that I should expect? Glenn -- Glenn Ramsey http://www.componic.co.nz

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Re: [Boost-users] Changing from std::map to boost::bimap
by Sean Farrow 02 Sep '08

02 Sep '08

Hi: I got that far, however I carn't seem to declare iterators properly: With the previously used map scheme, my iterator was declared as follows: Std::map<std::bitset<6>, int>::iterator DotsIterator; How do I convert this to use boost::bimap. Cheers Sean. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Daryle Walker Sent: 01 September 2008 20:34 To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Changing from std::map to boost::bimap On Aug 31, 2008, at 6:56 AM, Sean Farrow wrote: > I am looking to change from std::map to boost::bimap. > I have the following defined: > std::bimap<std::bitset<6>, int, BitSetComp> DotsList; > And > boost::bimap<std::bitset<6>, int, BitSetComp>::iterator DotsIterator; [SNIP] > How do I change these definitions to use boost::bimap. > Any help appreciated. A bimap can act as two regular maps, and does so through two special public data members. The "left" member acts like a map<bitset, int, BitSetComp>, and the "right" member flips the first two arguments. There are also type-aliases defined for each iterator, left or right. There is also a mode that acts like a std::set< std::pair< std::bitset< 6 >, int > > >. Read the docs for the specific names and modes. -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users __________ Information from ESET NOD32 Antivirus, version of virus signature database 3406 (20080902) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3406 (20080902) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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Problem with Boost.Test (1.36.0) and Visual Studio 2008 SP1
by Matthieu Brucher 02 Sep '08

02 Sep '08

Hi, I'm trying to build a test suite that worked with Linux and an older Boost version (1.34.1). I tried to compile it with Visual Studio 2008 SP1 with Boost 1.36 and I ran into this error : link /nologo /OUT:IRT_test_suit.exe /LIBPATH:D:\Travail\boost_1_36_0\lib "/LIBPA TH:D:\Python 2.5\libs" /LIBPATH:. IRT.lib boost_unit_test_framework-vc90-mt-1_36 .lib tools\boost_main_test.obj test_light.obj boost_unit_test_framework-vc90-mt-1_36.lib(boost_unit_test_framework-vc90-mt-1_3 6.dll) : error LNK2005: "public: static class boost::unit_test::unit_test_log_t & __cdecl boost::unit_test::singleton<class boost::unit_test::unit_test_log_t>:: instance(void)" (?instance@?$singleton@Vunit_test_log_t@unit_test@boost@@@unit_t est@boost@@SAAAVunit_test_log_t@23@XZ) déjà défini(e) dans test_light.obj IRT_test_suit.exe : fatal error LNK1169: un ou plusieurs symboles définis à diff érentes reprises ont été rencontrés boost_main_test.cpp consists of: #define BOOST_TEST_DYN_LINK #define BOOST_TEST_MODULE "IRT test suit" #include <boost/test/unit_test.hpp> And test_light.cpp: #include <boost/test/unit_test.hpp> Both files were compiled with the arguments cl /nologo /EHsc /Ox /MD -D_CRT_SECURE_NO_DEPRECATE -DWIN32 /TP /ID:\Travail\boo st_1_36_0 /I. /c test_light.cpp /Fotest_light.obj I didn't find a thing on the Internet with this issue, so I hope someone will have a clue... Matthieu -- French PhD student Website : http://matthieu-brucher.developpez.com/ Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92 LinkedIn : http://www.linkedin.com/in/matthieubrucher

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Errors when defining iterators for use with boost::bimap
by Sean Farrow 02 Sep '08

02 Sep '08

Hi: I am defining the following iterator with boost::bimap: typedef boost::bimap<std::bitset<6>, int, BitSetComp>::left_map::iterator DotsIterator; I get the following error amonst others: error C2903: 'rebind' : symbol is neither a class template nor a function template bimap_core.hpp 408 Should I have included something. If not how do I use boost::bimap with comparison operators within iterators. Note the following won't compile either: typedef boost::bimap<std::bitset<6>, int>::left_map::iterator DotsIterator; Any help apreciated. Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3408 (20080902) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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Re: [Boost-users] [review] Dataflow Review starts today, September 1st
by Maarten Nieber 02 Sep '08

02 Sep '08

Hi, in the last year, I have been doing a lot of dataflow programming so potentially I am very interested in this library. However, I would really like to see a documentation page that "sells" the library. I would like to see a description of cases that would be difficult, timeconsuming or hard to adapt for future requirements when implemented without this library, and understand how the library makes life easier. Instead, the library documentation quickly focuses on the architecture, i.e. the different layers in the library. There are some examples (VTK, graphical editor), but from these too I cannot tell if this library would help me or not. Best regards, Maarten ----- Original Message ---- From: Jaakko Järvi <jarvi(a)cs.tamu.edu> To: boost-users <boost-users(a)lists.boost.org> Sent: Monday, September 1, 2008 4:00:49 PM Subject: [Boost-users] [review] Dataflow Review starts today, September 1st The review of Stjepan Rajko's Dataflow library starts today, September 1st, and will run until September 10th. --------------------------------------------------------- Description of the library: Dataflow is a generic library for dataflow programming. Dataflow programs can typically be expressed as a graph in which vertices represent components that process data, and edges represent the flow of data between the components. As such, dataflow programs can be easily reconfigured by changing the components and/or the connections. This review focuses on the Dataflow.Signals layer of the library. For its data transport mechanism, Dataflow.Signals uses Boost.Signals which can be used to make lasting dataflow connections based on function calls. Dataflow.Signals provides the following to facilitate signals-based dataflow networks: * A number of useful general-purpose components, and building blocks for implementing new components. * Various free functions and operators for connecting and using components. The library documentation provides some concrete examples of how Dataflow.Signals layer can be used. Some examples are: * Implementing distributed dataflow applications using Dataflow.Signals and Boost.Asio * An image processing network using Dataflow.Signals and Boost.GIL * A GUI dataflow editor (located in the Dataflow.Blueprint documentation) While the Dataflow library contains other layers, only the Dataflow.Signals layer is ready for review. Reviewers are welcome to provide feedback for any part of the library, but please be aware that the documentation and implementation for the other layers may be lacking (for example, there is the generic support layer, which provides concepts applicable to different dataflow frameworks, and can be used to develop generic dataflow code, as well as the Dataflow.Blueprint layer which provides run-time reflection and modeling of dataflow networks in a Boost Graph Library graph for any dataflow framework with implemented Dataflow library support). For the time being, please consider these other layers as implementation details or proof-of-concept examples, as appropriate. The library is accessible as a tarball at: http://www.boostpro.com/vault/index.php?&directory=Dataflow The documentation can be accessed here: http://www.dancinghacker.com/code/dataflow/ The documentation particular to the Dataflow.Signals layer under review: http://www.dancinghacker.com/code/dataflow/dataflow/signals.html Dataflow depends on many existing Boost libraries, such as Fusion and MPL. The Dataflow.Signals layer builds functionality over Boost.Signals. The Dataflow library has been tested using a recent version of the Boost trunk, as well as the 1.35 release. Tests and examples have been built successfuly on OS X (GCC 4.0, 4.2), Linux (GCC 4.2), and Windows (MSVC 8.0 and to some degree MinGW GCC 4.2). --------------------------------------------------------- --------------------------------------------------------- Questions you may 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? In particular, please remember to answer the following question explicitly: - Do you think the library should be accepted as a Boost library? Jaakko Järvi Review Manager _______________________________________________ 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] [review] Dataflow Review starts today, September 1st
by Manuel Jung 02 Sep '08

02 Sep '08

Jaakko Järvi wrote: > The review of Stjepan Rajko's Dataflow library starts today, September > 1st, and will run until September 10th. > > --------------------------------------------------------- > Description of the library: > > Dataflow is a generic library for dataflow programming. Dataflow > programs can typically be expressed as a graph in which vertices > represent components that process data, and edges represent the flow > of data between the components. As such, dataflow programs can be > easily reconfigured by changing the components and/or the connections. > > This review focuses on the Dataflow.Signals layer of the library. For > its data transport mechanism, Dataflow.Signals uses Boost.Signals > which can be used to make lasting dataflow connections based on > function calls. Dataflow.Signals provides the following to facilitate > signals-based dataflow networks: > > * A number of useful general-purpose components, and building blocks > for implementing new components. > * Various free functions and operators for connecting and using > components. > > The library documentation provides some concrete examples of how > Dataflow.Signals layer can be used. Some examples are: > > * Implementing distributed dataflow applications using > Dataflow.Signals and Boost.Asio > * An image processing network using Dataflow.Signals and Boost.GIL > * A GUI dataflow editor (located in the Dataflow.Blueprint documentation) > > While the Dataflow library contains other layers, only the > Dataflow.Signals layer is ready for review. Reviewers are welcome to > provide feedback for any part of the library, but please be aware that > the documentation and implementation for the other layers may be > lacking (for example, there is the generic support layer, which > provides concepts applicable to different dataflow frameworks, and can > be used to develop generic dataflow code, as well as the > Dataflow.Blueprint layer which provides run-time reflection and > modeling of dataflow networks in a Boost Graph Library graph for any > dataflow framework with implemented Dataflow library support). For > the time being, please consider these other layers as implementation > details or proof-of-concept examples, as appropriate. > > The library is accessible as a tarball at: > http://www.boostpro.com/vault/index.php?&directory=Dataflow > > The documentation can be accessed here: > http://www.dancinghacker.com/code/dataflow/ > > The documentation particular to the Dataflow.Signals layer under review: > http://www.dancinghacker.com/code/dataflow/dataflow/signals.html > > Dataflow depends on many existing Boost libraries, such as Fusion and > MPL. The Dataflow.Signals layer builds functionality over > Boost.Signals. The Dataflow library has been tested using a recent > version of the Boost trunk, as well as the 1.35 release. Tests and > examples have been built successfuly on OS X (GCC 4.0, 4.2), Linux > (GCC 4.2), and Windows (MSVC 8.0 and to some degree MinGW GCC 4.2). > --------------------------------------------------------- > > > --------------------------------------------------------- > Questions you may 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? > > In particular, please remember to answer the following question > explicitly: > > - Do you think the library should be accepted as a Boost library? > > > Jaakko Järvi > Review Manager > > _______________________________________________ > Unsubscribe & other changes: > http://lists.boost.org/mailman/listinfo.cgi/boost Hey, The filter of the GIl example is always processed, whether or whether not it is multiplexed to the output, right? Maybe it would be good to insert a conditional component right before the filter, therefore the data is dropped, if the multiplexer takes data from slot 0. Otherwise a senseless computation is done, if the filter is turned off. I wanted to alter the example as suggested, but i don't know how to use the conditional component? I couldn't find a example for that. Maybe you could point out how to use it. Kind Regards Manuel

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Buffers - slices.
by Leandro Lucarella 02 Sep '08

02 Sep '08

Hello. I've been searching for a "buffer" class. I mean, a class like std::string with a .data() method that returns a mutable char* instead of a const char*. So I can do something like: std::string buffer; buffer.reserve(SIZE); int n = recv(fd, buffer.data(), SIZE, 0); I know I probably can do that with a cast anyways, but I don't think it's pretty nor "defined behaviour", right? Another thing sometime I need, is some string processing *without* copying. Something like a readonly substring view. What I think of is basically some struct like: struct slice { const char* ptr; size_t len; } which has all the other (at least no-mutable) operation of a string. Something like doing a std::string::substr() but without the copying. Are there any support for this stuff on boost? Do you know any other libraries which have this? TIA. -- Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/ ---------------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------------- You look so tired-unhappy, bring down the government, they don't, they don't speak for us.

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[thread] wrong assertion following call to pthread_mutex_timedlock()?
by Wolfgang Fertsak 02 Sep '08

02 Sep '08

In boost 1.35 and 1.36 the implementation of mutex::timed_lock() and recursive_mutex::timed_lock() for posix-platforms with BOOST_PTHREAD_HAS_TIMEDLOCK defined looks like this: bool timed_lock(system_time const & abs_time) { struct timespec const timeout=detail::get_timespec(abs_time); int const res=pthread_mutex_timedlock(&m,&timeout); BOOST_ASSERT(!res || res==EBUSY); return !res; } The assertion following pthread_mutex_timedlock() always fails in case of a timeout since the system call returns ETIMEDOUT when timed out and not EBUSY (according to the open group specification http://www.opengroup.org/onlinepubs/009695399/functions/pthread_mutex_timed…) Best regards, Wolfgang

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[filesystem][xpressive] Hotfix patches available for 1.36.0
by Beman Dawes 02 Sep '08

02 Sep '08

Hotfix patches are available to fix Boost.Filesystem and Boost.Xpressive [1.36.0] problems. See https://svn.boost.org/trac/boost/wiki/ReleasePractices/HotFixes Providing hotfix patches is something new and experimental for Boost. Please let us know if you find the patches useful or have other comments. Thanks, --Beman

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