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Re: [Boost-users] Unable to catch exception using boost::asio
by Alex Black 15 Jul '09

15 Jul '09

>> I'm using boost::asio for sockets, writing a response out to a client. >> >> If the client stops part way through getting the response, then my >> server process dies: >> >> terminate called after throwing an instance of >> 'boost::exception_detail::clone_impl<boost::exception_detail::error_in >> fo_injector<boost::system::system_error> >>>' >> ? what():? Broken pipe >> >> The code though is surrounded by try catch like this: >> >> try >> { >> ??? ... >> } >> catch ( std::exception& e ) >> { >> ??? cout << e.what() << endl; >> } >> catch ( ... ) >> { >> ???? cout << "unexpected exception" << endl; } >> >> How do I prevent my process from aborting/terminating like this? v >Have you verified that the code inside the try block executes on the same thread that the exception is occuring in? Not explicitly, how would I do that? thx - Alex

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[mpl] BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF
by Hicham Mouline 15 Jul '09

15 Jul '09

#include <iostream> #include <boost/mpl/has_xxx.hpp> #include <boost/mpl/bool.hpp> BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_xxx, xxx, false) struct test1 { int xxx; }; using namespace boost::mpl; int main() { std::cout<< has_xxx<test1>::value <<std::endl; return 0; } The output is 0, while it should be 1, shouldn't it? Rds,

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Re: [Boost-users] Unable to catch exception using boost::asio
by Alex Black 15 Jul '09

15 Jul '09

>> The code though is surrounded by try catch like this: >> >> try >> { >> ??? ... >> } > What code resides in the protected block? Do you run io_service in multiple threads? What exception-related compiler options do you use? I do call io_service.run, on a thread on startup. I call async_accept, and accept connections one at a time. So basically I a my accept_handler gets called, I enter the try, then its just business logic and writing results out onto a socket. Exception-related compiler options? Not sure. This is happening in debug (and release). In release I have march=native and O-O3 set.

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Unable to catch exception using boost::asio (boost::exception_detail::clone_imple<.....
by Alex Black 14 Jul '09

14 Jul '09

I'm using boost::asio for sockets, writing a response out to a client. If the client stops part way through getting the response, then my server process dies: terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info _injector<boost::system::system_error> >' what(): Broken pipe The code though is surrounded by try catch like this: try { ... } catch ( std::exception& e ) { cout << e.what() << endl; } catch ( ... ) { cout << "unexpected exception" << endl; } How do I prevent my process from aborting/terminating like this? thx - Alex

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[statechart] friend state can't call overloaded member functions in machine class
by David Matz 14 Jul '09

14 Jul '09

Hi, if one want to centralize all transition callbacks into the machine itself it's a good way to declare the states as friends and call the machine member functions which should (of course) private. But boost::statechart has problems if the member functions in the machine class are overloaded. Then the friend declaration is ignored by the compiler. Here is a snippet to reproduce the error: struct Active; class CoreApp : public boost::statechart::state_machine< CoreApp, Active > { friend struct Active; public: CoreApp() { initiate(); } private: void doInStateReaction(const EvNext &) {} void doInStateReaction(const EvBack &) {} ///< uncomment this line to resolve the error }; struct Active : boost::statechart::simple_state< Active, CoreApp > { typedef boost::mpl::list < //sc::in_state_reaction < EvBack, CoreApp, &CoreApp::doInStateReaction >, sc::in_state_reaction < EvNext, CoreApp, &CoreApp::doInStateReaction > > reactions; }; As one can see two functions doInStateReaction() are defined in the state machine class. Comment the second one out and it compiles. This problem occurs too if one uses a templated event which calls a templated function. A easy solution to this problem is to rename the functions slightly but I hope there is a better way. Has anyone an idea to catch this? David

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Tokenizer design question
by Polder, Matthew J 14 Jul '09

14 Jul '09

The Tokenizer library has a char_separator with the option to keep delimiters, drop delimiters, and keep or drop empty tokens. However, with escaped_list_separator, the only behavior is to keep empty tokens. While this is the obvious behavior for parsing csv and similar files, it would be nice to have the ability to also drop empty tokens when constructing an escaped_list_separator. I have a command line parser that either reads its arguments from the command line itself or a text file supplied on the command line. In the file I'm passing in formats for the Date Time library I/O routines, and the formats have spaces that I'm escaping so the format will be a single token, which Tokenizer does find. But I sometimes use multiple tabs to separate my fields so it will look pretty in a text editor, and escaped_list_separator is keeping these. The solution for now is to have a switch in my command line parser for which separator I want to use. thanks, matthew

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A linking error on switch_statement. Can anyone with kindness help me?
by fmingu 14 Jul '09

14 Jul '09

I am using Dev-C++ with boost 1.34.1,the program is the following: ....................... typedef std::map<int, int> IIPrimemap; IIPrimemap primemapvec; # define BetaKGre2 1 # define EqualToOne 2 #define ProductOfKPrime 3 ......................... (switch_statement(_1, case_statement<BetaKGre2> (var(result)=0), case_statement<EqualToOne> (var(result)=1), case_statement<ProductOfKPrime> (var(result)=bind(static_cast<long double (*)(long double,int)>(std::pow), constant(-1.0),bind(&IIPrimemap::size,var(primemapvec)))), default_statement ( var(result)=234) ))(switchvalue); the complier told me no errors.But the linker told me that: nstantiated from `Arg::sig<boost::tuples::tuple<A&, B&, C&, Env&, boost::tuples::null_type, boost::tuples::null_type, boost......... instantiated from `RET boost::lambda::lambda_functor_base<boost::lambda::s................ nstantiated from `T::sig<boost::tuples::tuple<A&, boost::tuples::null_type, boost::tuples::null_type, bo........... instantiated from here..........// indicating the line: ))(switchvalue); And after the second compling and linking , the program passed and ran. I do not know why. And this was caused after I added the line: (var(result)=bind(static_cast<long double (*)(long double,int)>(std::pow), constant(-1.0),bind(&IIPrimemap::size,var(primemapvec)))), otherwise the program do not have such problems. How can I solve it? Can anyone with kindness help me?

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Boost tokenizer does not work, and shows up invalid read of size on valgrind
by Avi Bahra 14 Jul '09

14 Jul '09

Using latest boost version 39 on gcc 4.2.1 on SUSE linux I am trying to load a file, and then split the lines into a vector of strings. However when this is run, it showed that the last string was corrupt. When I ran this with valgrind, the very first error shows an invalid read of size 1, in guts of boost::char_separator. ==19963== Invalid read of size 1 ==19963== at 0x8056870: bool boost::char_separator<char, std::char_traits<char> >::operator()<__gnu_cxx::__normal_iterator<char const*, std::string>, std::string>(__gnu_cxx::__normal_iterator<char const*, std::string>&, __gnu_cxx::__normal_iterator<char const*, std::string>, std::string&) (token_functions.hpp:430) ==19963== by 0x8056E3E: boost::token_iterator<boost::char_separator<char, std::char_traits<char> >, __gnu_cxx::__normal_iterator<char const*, std::string>, std::string>::initialize() (token_iterator.hpp:70) ==19963== by 0x8056EA6: boost::token_iterator<boost::char_separator<char, std::char_traits<char> >, __gnu_cxx::__normal_iterator<char const*, std::string>, std::string>::token_iterator(boost::char_separator<char, std::char_traits<char> >, __gnu_cxx::__normal_iterator<char const*, std::string>, __gnu_cxx::__normal_iterator<char const*, std::string>) (token_iterator.hpp:77) ==19963== by 0x8056FAA: boost::tokenizer<boost::char_separator<char, std::char_traits<char> >, __gnu_cxx::__normal_iterator<char const*, std::string>, std::string>::begin() const (tokenizer.hpp:86) here is program: BOOST_AUTO_TEST_CASE( test_log_append ) { string logFile = "test/logfile.txt"; // Load the log file into a vector, of strings, and test content ifstream ifs(logFile.c_str()); BOOST_REQUIRE_MESSAGE(ifs, "Could not open log file\n"); stringstream ss; ss << ifs.rdbuf(); // Read the whole file into a string char_separator<char> sep("\n"); // Split the file content unix=\n pc =\n\r typedef boost::tokenizer<boost::char_separator<char> > tokenizer; tokenizer tokens(ss.str(), sep); // <<<<<<<< valgrind barfs here std::vector<std::string> lines; lines.reserve(9); std::copy(tokens.begin(), tokens.end(), back_inserter(lines)); // <<<<<<<< valgrind barfs here for(int i = 0; i < lines.size(); i++) { cerr << "'" << lines[i] << "'\n"; } } the input in the logfile.txt is of the form: MSG:[16:36:09 14.7.2009] First Message LOG:[16:36:09 14.7.2009] LOG WAR:[16:36:09 14.7.2009] ERROR ERR:[16:36:09 14.7.2009] WARNING DBG:[16:36:09 14.7.2009] DEBUG OTH:[16:36:09 14.7.2009] OTHER OTH:[16:36:09 14.7.2009] OTHER2 MSG:[16:36:09 14.7.2009] Last Message The output is of the form: 'MSG:[16:36:09 14.7.2009] First Message' 'LOG:[16:36:09 14.7.2009] LOG' 'WAR:[16:36:09 14.7.2009] ERROR' 'ERR:[16:36:09 14.7.2009] WARNING' 'DBG:[16:36:09 14.7.2009] DEBUG' 'OTH:[16:36:09 14.7.2009] OTHER' 'OTH:[16:36:09 14.7.2009] OTHER2' '�:[16:36:09 14.7.2009] Last Message' Notice that the last string is corrupt. Is the tokenizer known to be buggy in boost 1.39, or am I doing it all wrong ? Best regards, Ta, Avi

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filesystem filename/regexp pattern matching, fnmatch
by Mark Lohry 14 Jul '09

14 Jul '09

I'm porting some linux software to Windows/MSYS, and I've run into a number of linux-specific file system routines that I was hoping boost::filesystem would be able to render portable, specifically "glob" and "fnmatch". As for glob, I came across this thread: http://article.gmane.org/gmane.comp.lib.boost.user/5198/match=glob but it appears to not have been implemented into boost, and the link to source code is long dead. Am I going to need to just re-write all glob-specific code into something boost::filesystem compatible? As for fnmatch(), which matches regular expressions in strings (say, finding all files in a directory which contain a numeral), does this not exist in the filesystem library, or am I overlooking something? Sorry for the novice nature of the question, but my Boost experience is limited to numerics. -ML

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regex traits for glib::ustring
by Simon Wibberley 14 Jul '09

14 Jul '09

Hi there, I'm attempting to build an application which requires multibyte character support, for which I'm using the Glib::ustring, and needs also to use regex. From what I understand you need to tell boost regex exactly how to iterate over your strings. I've got as far as: typedef boost::match_results<Glib::ustring::iterator, std::allocator<gunichar> > umatch; typedef boost::reg_expression<Glib::ustring, boost::regex_traits<Glib::ustring> > uregex; //making the regex_match<ustring::iterator, std::allocator<gunichar>, ustring, regex_traits<ustring> >(str.begin(), str.end(), m, re); //where str is a ustring, re is a uregex and m is a umatch as defined above However I get the feeling I'm completely missing a trick, ie that's it's a lot more complex than this... I'm using boost 1.39 and glibmm 2.4. Could anyone provide any guidance on this, whether it's even possible without writing a lot of code, or possible alternatives? Many thanks, Simon

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[test] Typo in documentation?
by Christian Henning 14 Jul '09

14 Jul '09

Hi there, on the page: http://www.boost.org/doc/libs/1_39_0/libs/test/doc/html/utf/user-guide/runt… the command line argument for detecting memory leaks is "build_info". Shouldn't that be "detect_memory_leak"? Regards, Christian

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Re: [Boost-users] Date Time I/O formatting question
by Polder, Matthew J 14 Jul '09

14 Jul '09

Commander Pirx wrote: ------------------------------------------ Would be interesting whats your format string looks like. Not all format flags work with all date_time classes. %z (Time zone) for instance works only with local_date_time. ------------------------------------------ It seems that no matter what formatting I try to use, it doesn't work. Example: TimeConverter sampleFile.txt %d:%m:%Y_%H:%M:%S %m:%d:%Y_%H:%M:%S sampleFile.txt: 05:01:2007_23:08:02 06:01:2007_23:09:04 expected output: (month and day positions switched) 2007-Jan-05 23:08:02 01:05:2007_23:08:02 2007-Jan-06 23:09:04 01:06:2007_23:09:04 output: 2007-Jan-05 23:08:02 2007-Jan-05 23:08:02 2007-Jan-06 23:09:04 2007-Jan-06 23:09:04 Code is below #include <fstream> #include <functional> #include <iostream> #include <sstream> #include "boost/date_time/gregorian/gregorian.hpp" #include "boost/date_time/posix_time/posix_time.hpp" #include "boost/date_time/local_time/local_time.hpp" using namespace std; int main(int argc, char** argv) { stringstream ss; ifstream in( argv[1] ); string inputFormat = argv[2]; string outputFormat = argv[3]; boost::local_time::local_time_facet* output_facet = new boost::local_time::local_time_facet(); boost::local_time::local_time_input_facet* input_facet = new boost::local_time::local_time_input_facet(); ss.imbue(locale(locale::classic(), output_facet)); ss.imbue(locale(ss.getloc(), input_facet)); output_facet->format( outputFormat.c_str() ); input_facet->format( inputFormat.c_str() ); while ( !in.eof() ) { string s; getline( in, s ); ss<<s; boost::posix_time::ptime p; ss>>p; string s1 = boost::posix_time::to_simple_string(p); cout<<s1<<"\n"; ss.str(""); ss<<p; string s2 = ss.str(); cout<<s2<<"\n"; std::ws(in); ss.str(""); } }

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BOOST::Test floating_point_comparison.hpp:224: warning: ‘boost::test_tools::<unnamed>::check_is_close’ defined but not used
by Avi Bahra 14 Jul '09

14 Jul '09

I am using boost 1.39 on gcc , I have many tests, but keep getting the warning above. Is there any way to get rid of this compiler warning ? Any help appreciated. Best regards, Ta, Avi

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Build error
by OvermindDL1 14 Jul '09

14 Jul '09

I am attempting to build boost, first I set some environment vars (some may not be useful anymore, but I still set them): set BZIP2_SOURCE=G:\SDKs\boost\bzip2-1.0.4 set ZLIB_SOURCE=G:\SDKs\boost\zlib-1.2.3 set HAVE_ICU=1 set ICU_PATH=R:\SDKs\icu\icu set EXPAT_INCLUDE=G:\SDKs\expat\expat_cvs\expat\lib set EXPAT_LIBPATH=G:\SDKs\expat\expat_cvs\expat\win32\bin\release I then call: bootstrap.bat bjam --build-type=complete --toolset=msvc-8.0 --without-mpi --without-python --prefix=R:/SDKs/boost/built_head --build-dir=R:/SDKs/boost/build_head define=_CRT_NONSTDC_NO_DEPRECATE define=_CRT_SECURE_NO_DEPRECATE define=_SECURE_SCL=0 define=_SCL_SECURE_NO_DEPRECATE define=_HAS_ITERATOR_DEBUGGING=0 install>..\build-HEAD.log And my build-HEAD.log contains: Note: Building Boost.Regex with Unicode/ICU support enabled Using ICU in R:\SDKs\icu\icu/include warning: Graph library does not contain MPI-based parallel components. note: to enable them, add "using mpi ;" to your user_config.jam error: link=shared together with runtime-link=static is not allowed error: such property combination is either impossible error: or too dangerious to be of any use I have never seen those last three errors, and other then the bootstrap my commands have not changed in many many versions. What is causing them?

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Boost Regex: Use boost::uint32_t as character type.
by Etienne Philip Pretorius 14 Jul '09

14 Jul '09

Hello List, I just like to know, if you can use a std::vector<boost::uint32_t> as a source to match regular expressions against it. Etienne

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Re: [Boost-users] boost programmer_option.hpp
by Narendra R 14 Jul '09

14 Jul '09

> > Thx ravi, I got to know and it working. I was not knowing that -l is for searching the lib object -L for lib path or for linking object. Thanks one again > > ------------------------------ > > Message: 4 > Date: Sat, 11 Jul 2009 11:03:20 -0400 > From: Ravi <lists_ravi(a)lavabit.com> > Subject: Re: [Boost-users] boost programmer_option.hpp > To: boost-users(a)lists.boost.org > Message-ID: <200907111103.20188.lists_ravi(a)lavabit.com> > Content-Type: Text/Plain; charset="iso-8859-15" > > On Friday 10 July 2009 01:28:44 Narendra R wrote: > > I tried to link like this > > g++ -I /home/narendra/boost_instal/boost_1_39_0 test.cpp -o test -L > > /home/narendra/boost_instal/boost_1_39_0/stage/lib > > > -l/home/narendra/boost_instal/boost_1_39_0/stage/lib/libboost_program_optio > >ns-gcc41-mt-1_39.a > > The '-l' is not required when explicitly specifying the whole library. So, > you > would use one of the following. Replace $INS with > /home/narendra/boost_instal/boost_1_39_0 in the code below. > > Option 1: > > g++ -I$INS test.cpp -o test $INS/libboost_program_options-gcc41-mt-1_39.a > > Option 2: > > g++ -I$INS test.cpp -o test -L $INS/stage/lib > -lboost_program_options-gcc41- > mt-1_39 > > In option 2, depending on whether you use static linking or dynamic > linking, > you may want to set LD_LIBRARY_PATH before running the example. > > Regards, > Ravi > > > > ------------------------------ > > Message: 5 > Date: Sat, 11 Jul 2009 11:08:52 -0400 > From: Ravi <lists_ravi(a)lavabit.com> > Subject: Re: [Boost-users] Boost Python is slow? > To: boost-users(a)lists.boost.org > Message-ID: <200907111108.52321.lists_ravi(a)lavabit.com> > Content-Type: Text/Plain; charset="iso-8859-1" > > On Thursday 09 July 2009 05:00:47 Tyomich on the AIR wrote: > > And then when I use a simple function which just increments the x member > of > > every object, this function takes about 4 seconds to process the whole > list > > (1000000 items) of Boost-wrapped objects and less than a second to > process > > objects of my own wrapping! How this can be possible? Is Boost.Python > much > > more slower than Python itself? > > Boost.Python is a little slower than wrapping directly using Python C-API, > especially in very simple cases like yours. (It is a variant of the > abstraction penalty.) However, it is hard to believe that it is 4x slower. > Would you mind posting complete compilable examples so that we can take a > look > at it? > > Regards, > Ravi > > >

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Re: [Boost-users] [Program Options] Difficulty compiling for static runtime library
by Lindley M French 14 Jul '09

14 Jul '09

> It does not seem you have tried *exactly* what Steven has suggested. Ah! Yes, when I do this: bjam.exe debug runtime-link=static link=static --with-program_options it at least appears to be *trying* to do the right thing. Still no joy on the burn, though. ...patience... ...found 523 targets... ...updating 26 targets... common.mkdir bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static common.mkdir bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\cmdline.obj cmdline.cpp libs\program_options\src\cmdline.cpp(272) : warning C4800: 'int' : forcing value to bool 'true' or 'false' (performance warning) compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\config_file.obj config_file.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\options_description.obj options_description.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\parsers.obj parsers.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\variables_map.obj variables_map.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\value_semantic.obj value_semantic.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\positional_options.obj positional_options.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj utf8_codecvt_facet.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\convert.obj convert.cpp compile-c-c++ bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\winmain.obj winmain.cpp failed to write output file 'bin.v2\libs\program_options\build\msvc-8.0\release\link-static\runtime-link-static\threading-multi\libboost_program_optio ns-vc80-mt-s-1_39.lib.rsp'! What could cause this? All the other builds have worked fine, and I'm not low on drive space or anything.

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asio DNS SRV
by Etienne Philip Pretorius 14 Jul '09

14 Jul '09

Hello list, I ran across an old post, http://osdir.com/ml/lib.boost.asio.user/2007-05/msg00108.html, and I am wandering if asio does support DNS SRV records now? Thank you Etienne

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Regular Expression
by Wong Peter 14 Jul '09

14 Jul '09

Hello to all, i want to search a container which copied from file with certain regular expression and then display it to stdout; Here is my code: [code] std::cout << "\n\nEnter Search designation : "; std::string userDesignation; getline(std::cin, userDesignation); std::ifstream inHandle("C:\\Staff.txt"); std::vector<std::string> data; data.reserve(100); std::copy(std::istream_iterator<std::string>(inHandle), std::istream_iterator<std::string>(), std::back_inserter(data) ); boost::regex searchExpression(userDesignation); boost::match_results<std::vector<std::string>::iterator > result; boost::regex_match(data.begin(), data.end(), result, searchExpression); [/code] The error is error C2664: 'char boost::w32_regex_traits<charT>::translate(charT,bool) const' : cannot convert parameter 1 from 'std::basic_string<_Elem,_Traits,_Ax>' to 'char' error C2664: 'char boost::w32_regex_traits<charT>::translate(charT,bool) const' : cannot convert parameter 1 from 'std::basic_string<_Elem,_Traits,_Ax>' to 'char' I think the error cause by vector string iterator rather than string iterator. Any workaround solution to this problem ? Thanks. -- Linux

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[Multi-Index] New "hierarchical" indexing?
by Dominique Devienne 14 Jul '09

14 Jul '09

I'm using BMI containers with several indexes, notably an index on the parent of each entry. But some of my BMIs have a hierarchical parent-child relationship of their entries, and I need to answer hierarchical queries like is-child-of, is-descendant-of, is-ancestor-of, etc... In another use case, entries have a "scenario" key, where scenario is hierarchical, and I want all entries in BMI A from a given scenario and all its ancestors, with the scenarios being in BMI B (i.e. "cross-bmi"). Of course I can do a "full scan" but I'm looking for something hopefully faster/smarter. Has anyone experimented with providing such a specialized index? At least in one instance, I'm manually keeping a separate container with all the edges of the DAG to be able to answer such a query, but then I have to maintain this "index" separately from the BMI, which is precisely what BMI is designed to avoid. This is also a solution that is OK in this particular case (~ 1500 nodes, ~7500 edges), but may be too expensive for some other graphs with more nodes. Any input would be appreciated. Thanks, --DD

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[Q] regular expressions change the 'substitue with' value
by V S P 14 Jul '09

14 Jul '09

Looking for some help with how to use regular expression library I have a string "!1!" I am replacing it with "\temp\i\otrq92rq40100__db1003.xls" ( a windows path to a file) This is how I am doing it std::string repl=subst_designator+ boost::lexical_cast<std::string>(counter)+ subst_designator; boost::algorithm::replace_all_regex(new_arg, boost::regex(repl),*res_it); Where: subst_designator = '!' counter = 1 new_arg = "!1!" *res_it="\temp\i\otrq92rq40100__db1003.xls" after the above code, the new_arg contains a strange string that appears to have back slashes removed and the first \t replaced with something like a 'tab' new_arg=" empiotrq92rq40100__db1003.xls" I am thinking that this is wrong, because the regular expression should copy without modifications the value of *res_it into the new_arg I am using 1.38 on windows with VS9. My question is , how can make it so the string in *res_it substitutes !1! thank you in advance, Vlad -- Vlad P author of C++ ORM http://github.com/vladp/CppOrm/tree/master -- http://www.fastmail.fm - IMAP accessible web-mail

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Linking to release boost libs form debug build
by johnnyk427 14 Jul '09

14 Jul '09

I've noticed my boost libs are slowing my game down incredibly in my debug builds. I'd like to link to release boost libs even in Debug, is that possible and will it cause any problems? Heres what I've got so far: I've managed to stop my project from auto-linking to the generated lib names (by adding #define BOOST_ALL_NO_LIB), and listed the libs I want to include manually, but now I get link errors like this: libcmt.lib(invarg.obj) : error LNK2005: __initp_misc_invarg already defined in Libcmtd.lib(invarg.obj) It wants to link to the release RunTime, but my project is linking to the debug RunTime. So it seems that I want to create my boost libs so that they are release (and optimized), but link to the debug runtime. Is it even possible to build the libs like that? I'm studying boost jam now but having a hard time understanding how I would make libs as such. Thanks for any help you can offer, -John Thanks! -John -- View this message in context: http://www.nabble.com/Linking-to-release-boost-libs-form-debug-build-tp2445… Sent from the Boost - Users mailing list archive at Nabble.com.

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Date Time I/O formatting question
by Polder, Matthew J 13 Jul '09

13 Jul '09

I've found the Date Time library incredibly useful for dealing with timestamps, but I can't seem to get the output formatted the way I want. I've followed the example for the Date Time IO Tutorial (http://www.boost.org/doc/libs/1_39_0/doc/html/date_time/date_time_io.html#d…) but the output always comes out the same way. I've tried the following code with Visual Studio Express 2008 and g++ 4.2 on Solaris 10. I'm using Boost 1.39.0. Any help appreciated. matthew #include <fstream> #include <functional> #include <iostream> #include <sstream> #include "boost/date_time/gregorian/gregorian.hpp" #include "boost/date_time/posix_time/posix_time.hpp" #include "boost/date_time/local_time/local_time.hpp" using namespace std; int main(int argc, char** argv) { stringstream ss; ifstream in( argv[1] ); string inputFormat = argv[2]; string outputFormat = argv[3]; //I want my own formatting. boost::local_time::local_time_facet* output_facet = new boost::local_time::local_time_facet(); boost::local_time::local_time_input_facet* input_facet = new boost::local_time::local_time_input_facet(); ss.imbue(locale(locale::classic(), output_facet)); ss.imbue(locale(ss.getloc(), input_facet)); output_facet->format( outputFormat.c_str() ); input_facet->format( inputFormat.c_str() ); while ( !in.eof() ) { string s; getline( in, s ); ss<<s; boost::posix_time::ptime p; ss>>p; //This works fine. string s1 = boost::posix_time::to_simple_string(p); cout<<s1<<"\n"; ss.str(""); ss<<p; //I don't get my format. string s2 = ss.str(); cout<<s2<<"\n"; std::ws(in); ss.str(""); } } ----Input File---- 05:01:2007_23:08:02 06:01:2007_23:09:04 07:01:2007_16:32:58 07:01:2007_18:51:42 07:01:2007_19:51:27 ----Output---- 2007-Jan-05 23:08:02 2007-Jan-05 23:08:02 2007-Jan-06 23:09:04 2007-Jan-06 23:09:04 2007-Jan-07 16:32:58 2007-Jan-07 16:32:58 2007-Jan-07 18:51:42 2007-Jan-07 18:51:42 2007-Jan-07 19:51:27 2007-Jan-07 19:51:27

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[statechart] Access to asynchronous_state_machine
by Bill Clark 13 Jul '09

13 Jul '09

We're using an asynchronous state machine. You can't construct these directly; you have to create them indirectly using a scheduler. Is there any "official" way to get access to the state machine after it's constructed? Or, alternatively, is there a way to pass a parameter to its constructor? The scenario I have in mind is one where the client needs to supply the state machine with some information at run time, ideally immediately upon construction, but in any case before any reactions occur. So far I have not found an easy way for the client to get access to the state machine itself. I can work around this by assuming that the state machine is a singleton, and setting a publicly visible static instance pointer. But this is far from ideal. Is there a better way? Thanks, Bill

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POD boost aligned storage?
by Joseph Garvin 13 Jul '09

13 Jul '09

I was trying to figure out if boost::aligned_storage was POD so I looked at the header. It looks like the internal implementation type is a POD, but the actual aligned_storage itself is not. However, that implementation type is exposed through a public typedef. Is it safe for me to use the typedef if I really do need a POD type and don't mind losing the safety of being noncopyable? Is opting out of that tradeoff what the typedef is there for?

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