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Problem building Boost 1.33 .0 under Cygwin
by Clarke, Carus V 23 Aug '05

23 Aug '05

Hi, I am having a problem building Boost 1.33.0 using gcc under the current version of Cygwin. The build aborts after displaying the following messages: Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). unknown target type for <@boost!libs!test!build>libboost_prg_exec_monitor.dll Could anyone tell me what I am missing? Version 1.32.0 built on my machine with no problems. Thanks, Carus V. (Bud) Clarke carus.v.clarke(a)boeing.com

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Suggestion for Boost.Thread
by ycc 23 Aug '05

23 Aug '05

Hi, booster, I am using boost.thread in Windows with VC6, it's quite handy and useful. I found it's better if the library can add 2 additional methods. One is the typedef platform_dependent thread_id_type; thread_id_type id() const ; sometimes I want to know what thread is really in the log file. so I can write this: std::cout << thread().id() << std::endl; another one is a way to return the raw thread_handle. typedef platform_dependent thread_handle thread_handle handle() const ; by this, I can suspend, terminate the thread in Windows, or in Posix platform using #ifdef. For example; boost::thread t(...); #ifdef WINDOWS ::TerminateThread(t.handle()); #endif Is this doable? Thanks.

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"failed to write command file!" while installing boost 1.33
by tom gee 22 Aug '05

22 Aug '05

Can anybody help me out? here's my procedures: 1. build bjam from the source. 2. run bjam "-sTOOLS=vc-7_1" "--with-python-root=D:\Python24" install After hundreds of successful items, the process suddenly stop with an error "failed to write command file!". I tried seveal times, with or without compiling python libraries, It stopped ramdonly,sometimes at the python libraries, others at the multi-thread libraries. My system is Windows XP SP2 English, with Visual studio 2003. I have have VC2005 express b2 installed. Previously, I encountered the same problem with boost 1.33b2. but i have no problem with boost 1.32 which I 've been happy with for a long time.

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Does Boost support Windows 98?
by Matt England 22 Aug '05

22 Aug '05

Hello, I realize this is a rather ambiguous question, but I thought I'd start somewhere: Does Boost support Windows 98? If it's only partial support, what is missing? (I realize that there are many Boost libraries, and this answer might be a per-library question.) I see vague references in email lists to win98 support, but I'm hoping to find an official reference. I am managing a software development project based on MinGW/Boost, hoping to not have to support Win98, but I just realized that now we need to do so (support win98). Hence my question comes a bit after the fact. Thanks for any help, -Matt

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XML-Serialization_Problem with loading...
by p.speck＠ewersbach.net 22 Aug '05

22 Aug '05

I have a problem with serialization in XML-format. The ser.routine saves the data as xml, but when trying to reload, the execution breaks. When using the text-output saving and loading works fine... I hope someone can help me: Here the code of the functions: ------------------------------------------------ main.cpp: ------------------------------------------------ #include "fixture.h" #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <iostream> #include <fstream> #include <string> #include <sstream> void save(CFixture* fixt, const char* filename) { ofstream ofs(filename); assert(ofs.good()); boost::archive::xml_oarchive oa(ofs); oa << BOOST_SERIALIZATION_NVP(*fixt); ofs.close(); } void load(CFixture* fixt, const char* filename) { ifstream ifs(filename); assert(ifs.good()); cout << filename << endl; boost::archive::xml_iarchive ia(ifs); cout << "Archive" << endl; ia >> BOOST_SERIALIZATION_NVP(*fixt); cout << "loaded" << endl; ifs.close(); } -------------------------------------------------- fixture.h: ------------------------------------------------- /* Header für Fixtures */ #include <vector> #include <string> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/serialization/string.hpp> #include <boost/serialization/vector.hpp> #include <boost/serialization/nvp.hpp> class CFvalue { public: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { cout << "CFvalue" << endl; ar & BOOST_SERIALIZATION_NVP(min); ar & BOOST_SERIALIZATION_NVP(max); ar & BOOST_SERIALIZATION_NVP(name); ar & BOOST_SERIALIZATION_NVP(picture); } //...CUT...// class CFunctionvalues { protected: string svalue; int dvalue; int dvalue2; double pvalue; public: virtual bool setdvalue(int) = 0; virtual bool setdvalue2(int) = 0; virtual bool setpvalue(double) = 0; virtual bool setsvalue(const char*) = 0; virtual int getdvalue() = 0; virtual int getdvalue2() = 0; virtual double getpvalue() = 0; virtual string getsvalue() = 0; friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { cout << "CFunctionvalue" << endl; ar & BOOST_SERIALIZATION_NVP(svalue); ar & BOOST_SERIALIZATION_NVP(dvalue); ar & BOOST_SERIALIZATION_NVP(dvalue2); ar & BOOST_SERIALIZATION_NVP(pvalue); } }; class CFunction : public CFunctionvalues { public: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { cout << "CFunction" << endl; ar & BOOST_SERIALIZATION_NVP(min); ar & BOOST_SERIALIZATION_NVP(max); ar & BOOST_SERIALIZATION_NVP(channel); ar & BOOST_SERIALIZATION_NVP(channel2); ar & BOOST_SERIALIZATION_NVP(has16bit); ar & BOOST_SERIALIZATION_NVP(type); ar & BOOST_SERIALIZATION_NVP(inverted); ar & BOOST_SERIALIZATION_NVP(name); ar & BOOST_SERIALIZATION_NVP(valuelist); ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(CFunctionvalues); } //...CUT...// class CFunctionset : public CFunctionvalues { protected: CFunction* base; public: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { cout << "CFunctionset" << endl; ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(CFunctionvalue); } //...CUT...// ------------------------------------------------- XML-Output ------------------------------------------------- <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <*fixt class_id="0" tracking_level="0" version="0"> <channels>2</channels> <type>1</type> <name>MAX250</name> <manufacturer>GLP</manufacturer> <picture>max.jpg</picture> <functions class_id="1" tracking_level="0" version="0"> <count>2</count> <item class_id="2" tracking_level="0" version="0"> <min>0</min> <max>255</max> <channel>1</channel> <channel2>0</channel2> <has16bit>0</has16bit> <type>1</type> <inverted>0</inverted> <name>PAN</name> <valuelist class_id="3" tracking_level="0" version="0"> <count>2</count> <item class_id="4" tracking_level="0" version="0"> <min>0</min> <max>100</max> <name>links</name> <picture></picture> </item> <item> <min>101</min> <max>255</max> <name>rechts</name> <picture></picture> </item> </valuelist> <svalue></svalue> <dvalue>0</dvalue> <dvalue2>0</dvalue2> <pvalue>0</pvalue> </item> <item> <min>0</min> <max>255</max> <channel>4</channel> <channel2>0</channel2> <has16bit>0</has16bit> <type>3</type> <inverted>0</inverted> <name>COLOR</name> <valuelist> <count>3</count> <item> <min>0</min> <max>50</max> <name>White</name> <picture></picture> </item> <item> <min>51</min> <max>100</max> <name>Rot</name> <picture></picture> </item> <item> <min>101</min> <max>255</max> <name>Gelb</name> <picture></picture> </item> </valuelist> <svalue></svalue> <dvalue>0</dvalue> <dvalue2>0</dvalue2> <pvalue>0</pvalue> </item> </functions> </*fixt>

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boost logging from shared libraries
by Austin Bingham 22 Aug '05

22 Aug '05

First, I wasn't sure where would be the most appropriate place to post this question, so I apologize if it's gone to the wrong place. I'm trying to figure out how to put logging statements in some shared libraries which are then controlled via manipulate_logs() calls an the executable that uses the libraries. It appears, after some rudimentary experiments, that this does not work, and I was hoping to find out if there is a way to do it. The logging system, of course, does log manipulation using log names and regular expression matching. As such, I assumed that logs were statically allocated and, in some way, all registered with some central registry which made them all available via their names. Stepping through logging calls in the libraries seems to indicate that logging code is being accessed and, as far as I can tell, the logs are "enabled" and, in fact, trying to log messages (to cout, for what it's worth). However, I don't see anything printed except for log messages genereted from the executable's source code. So, is what I'm trying to do even feasible? I would love to be able to have diagnostics built into my libraries which I could dis/enable as necessary from the executive level. Hopefully I'm just missing something simple. Thanks. -- Austin Bingham "If I were creating the world I wouldn't mess about with butterflies and daffodils. I would have started with lasers, eight o'clock, Day One!" Evil

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XML-Serialization_Problem with loading: Debug output
by p.speck＠ewersbach.net 22 Aug '05

22 Aug '05

#0 0x4013383b in raise () from /lib/tls/libc.so.6 #1 0x40134fa2 in abort () from /lib/tls/libc.so.6 #2 0x400b6f57 in __cxa_call_unexpected () from /usr/lib/libstdc++.so.5 #3 0x400b6f94 in std::terminate () from /usr/lib/libstdc++.so.5 #4 0x400b7106 in __cxa_throw () from /usr/lib/libstdc++.so.5 #5 0x0805d1a3 in boost::archive::basic_xml_iarchive<boost::archive::xml_iarchive>::load_start () #6 0x0804d34b in boost::archive::basic_xml_iarchive<boost::archive::xml_iarchive>::load_override<CFixture> () #7 0x0804d328 in boost::archive::xml_iarchive_impl<boost::archive::xml_iarchive>::load_override<boost::serialization::nvp<CFixture> > () #8 0x0804cb08 in boost::archive::detail::interface_iarchive<boost::archive::xml_iarchive>::operator>><boost::serialization::nvp<CFixture> > () #9 0x0804bf05 in load () #10 0x0804bac4 in main ()

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MPL: Creating a vector of vector_c's from a vector_c
by Pascal Bauer 22 Aug '05

22 Aug '05

Hello, I have the following problem: Given typedef mpl::vector_c<int, 3, 0, 3, 6, 9> MyVector; Now, I wish to create a mpl::vector with 3 entries that look like mpl::vector< mpl::vector_c<int, 1, 0, 3, 6, 9>, mpl::vector_c<int, 1, 1, 4, 7, 10>, mpl::vector_c<int, 1, 2, 5, 8, 11> > In words The first number in MyVector gives me the number of resulting vector_c types. the resulting types should contain a 1 instead of that number. The other numbers should be replace gradualy: The first vector_c should contain the same numbers as the original type. In the second vector_c, all the numbers should be incremented by one, and so forth. I have to admit, that this task overstrains me, so it would be very kind, if someone could help me to figure this out. Cheers Pascal Bauer -- ************************************ * Pascal Bauer * * * * Theoretical Astrophysics Group * * Mail: pascal.bauer(a)phim.unibe.ch * ************************************

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[date_time] timezone bug for boost::posix_time::microsec_clock::local_time()
by Brendon Costa 22 Aug '05

22 Aug '05

Hi, I have noticed that there seems to be a problem with the boost date_time library 1.33 (Downloaded about 2 days ago) when trying to use the localtime information under a NetBSD system. Specifically when I have a small test program: #include "boost/date_time/posix_time/posix_time.hpp" #include "boost/date_time/c_local_time_adjustor.hpp" #include <iostream> int main() { using namespace boost::posix_time; ptime loc = microsec_clock::local_time(); ptime utc = microsec_clock::universal_time(); std::cout << "Local: " << to_simple_string(loc) << std::endl; std::cout << "UTC: " << to_simple_string(utc) << std::endl; std::cout << "Local again: " << to_simple_string( boost::date_time::c_local_adjustor<ptime>::utc_to_local(utc)) << std::endl; return 0; } It will display the same time for both UTC time and Local time (Living in Melbourn Australia) where I expected them to differ. I found that the above program would fail unless I did the following: #include "boost/date_time/posix_time/posix_time.hpp" #include "boost/date_time/c_local_time_adjustor.hpp" #include <iostream> int main() { using namespace boost::posix_time; tzset(); ptime loc = microsec_clock::local_time(); ptime utc = microsec_clock::universal_time(); std::cout << "Local: " << to_simple_string(loc) << std::endl; std::cout << "UTC: " << to_simple_string(utc) << std::endl; std::cout << "Local again: " << to_simple_string( boost::date_time::c_local_adjustor<ptime>::utc_to_local(utc)) << std::endl; return 0; } Thanks, Brendon Costa.

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[serialization] dynamic arrays of chars
by Ivan 21 Aug '05

21 Aug '05

I have a parser and there is one big object that holds the whole file being parsed as a dynamic array class File { public char * ptr; }; File file; file.ptr = new char[very_big_number_like_100000]; The parser creates a lot of objects that keep pointers into this dynamic array. class A { char* internalPtr1; }; class B { char* internalPtr2; }; class C { char* internalPtr3; }; A a; B b; C c; a.internalPtr1 = file.ptr + 234; b.internalPtr2 = file.ptr + 10673; c.internalPtr3 = file.ptr + 9583; How could I serialize the file object and these numerous small objects? I could write separate save/load for each of these A, B, C and so on but I'll need access to File::ptr inside the save/load funcs and this would be an ugly solution. Any ideas?

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