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thread library name with mingw
by frederic.bron＠alcan.com 08 Jul '08

08 Jul '08

I am building boost from cygwin for win32 using gcc -mno-cygwin. As I use the flag --layout=system, why do I obtain the following name for the boost-thread library: libboost_thread_win32-mt.a. I would expect libboost_thread-mt.a only? Of course this is a consequence of flag threadapi=win32 but why does not layout=system override this file name? Here is my command line: $ bjam -d2 -j4 -sBZIP2_INCLUDE=/cygdrive/d/Softs/bzip2_msw/include -sBZIP2_LIBPATH=/cygdrive/d/Softs/bzip2_msw/lib -sNO_ZLIB=1 link=static threading=multi runtime-link=shared threadapi=win32 --layout=system --user-config=user-config.jam --without-python release install user-config.jam contains: using gcc : : : <cflags>-mno-cygwin <cflags>-DBOOST_WINDOWS_API <cxxflags>-mno-cygwin <cxxflags>-DBOOST_WINDOWS_API <compilerflags>-mno-cygwin <compilerflags>-DBOOST_WINDOWS_API <linkflags>-mno-cygwin ; F. Bron Avis : Ce message et toute pièce jointe sont la propriété d'Alcan et sont destinés seulement aux personnes ou à l'entité à qui le message est adressé. Si vous avez reçu ce message par erreur, veuillez le détruire et en aviser l'expéditeur par courriel. Si vous n'êtes pas le destinataire du message, vous n'êtes pas autorisé à utiliser, à copier ou à divulguer le contenu du message ou ses pièces jointes en tout ou en partie. Notice: This message and any attachments are the property of Alcan and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part.

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[boost-users][Multi-Index] crash in equal_range()
by Igor R 07 Jul '08

07 Jul '08

Hello, I've got a multi_index_container with few indices, as follows: struct Record { // some data }; typedef mi::multi_index_container< Record, mi::indexed_by< mi::ordered_non_unique<mi::tag<Record::stream>, mi::member<Record, int, &Record::streamID_> >, mi::ordered_non_unique<mi::tag<Record::setting>, mi::member<Record, int, &Record::settingID_> > > > Records; typedef Records::index<Record::stream>::type RecordsByStream; typedef Records::index<Record::setting>::type RecordsBySetting; Records records_; Then I insert 1 Record into records_. Later in the code I do the following lookup: RecordsBySetting bySetting = records_.get<Record::setting>(); std::pair<RecordsBySetting::iterator, RecordsBySetting::iterator> sameSetting = bySetting.equal_range(1); // record with setting id == 1 exists in the container! In the last line, in equal_range() I've got an exception (access violation). Am I doing something wrong? Any help would be greatly appreciated! Some tracing: The crash is in ordered_index::equal_range(const CompatibleKey& x) in its 1st line: std::pair<node_type*,node_type*> p= ordered_index_equal_range(root(),header(),key,x,comp); An attepmt to access the root() fails. Here is the call stack: SomeProg.exe!boost::multi_index::detail::ordered_index_node_compressed_base<std::allocator<void> >::parent_ref::operator boost::multi_index::detail::ordered_index_node_impl<std::allocator<void> > *() Line 161 + 0x5 bytes C++ SomeProg.exe!boost::multi_index::detail::ordered_index<boost::multi_index::member<Record,int,8>,std::less<int>,boost::multi_index::detail::nth_layer<2,Record,boost::multi_index::indexed_by<boost::multi_index::ordered_non_unique<boost::multi_index::tag<Record::streamable,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>,boost::multi_index::member<Record,int,4>,boost::mpl::na>,boost::multi_index::ordered_non_unique<boost::multi_index::tag<Record::setting,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>,boost::multi_index::member<Record,int,8>,boost::mpl::na>,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>,std::allocator<Record> >,boost::mpl::vector1<Record::setting>,boost::multi_index::detail::ordered_non_unique_tag>::root() Line 879 + 0x40 bytes C++ SomeProg.exe!boost::multi_index::detail::ordered_index<boost::multi_index::member<Record,int,8>,std::less<int>,boost::multi_index::detail::nth_layer<2,Record,boost::multi_index::indexed_by<boost::multi_index::ordered_non_unique<boost::multi_index::tag<Record::streamable,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>,boost::multi_index::member<Record,int,4>,boost::mpl::na>,boost::multi_index::ordered_non_unique<boost::multi_index::tag<Record::setting,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>,boost::multi_index::member<Record,int,8>,boost::mpl::na>,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>,std::allocator<Record> >,boost::mpl::vector1<Record::setting>,boost::multi_index::detail::ordered_non_unique_tag>::equal_range<int>(const int & x=1) Line 493 + 0x20 bytes C++

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MSVC ++ and Boost libraries
by Tony May 07 Jul '08

07 Jul '08

Is it possible to use the pre-built binaries with MSVC++ 2005 express edition? I get the following error from bjam when attempting to build the pyd from the source file hello.cpp. ----------------------------------------------------- hello.cpp has the following code trying to wrap a class BOOST_PYTHON_MODULE(hello_ext) { class_<GreetBase>("GreetBase") # line 50 .def("greet", &GreetBase::greet) ; } -------------------------------------------- hello.cpp(50) : error C2976: 'boost::python::class_' : too few template arguments C:\Program Files\boost\boost_1_35_0\boost/python/def_visitor.hpp(14) : see declaration of 'boost::python::class_' hello.cpp(50) : error C2440: '<function-style-cast>' : cannot convert from 'const char [10]' to 'boost::python::class_' Source or target has incomplete type hello.cpp(50) : error C2228: left of '.def' must have class/struct/union ------------------------------------------------ Do I need to rebuild the boost libraries? Would this be expected to fix the problem?

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asio problem
by River Tarnell 07 Jul '08

07 Jul '08

hi, sorry for the vague question, but i'm not entirely sure what the problem here is... i have a class hierarchy (has-a relationship) like this: fcgi_server_connection +-fcgi_application +-fcgi_cgi fcgi_server_connection has a tcp::socket 'server_socket'. fcgi_cgi has another tcp::socket, 'child_socket'. the program asynchronously reads messages from server_socket then writes them to child_socket, and reads messages from child_socket then writes them to server_socket. (there is some intermediate processing, but i don't think it affects the problem.) the problem occurs when deleting these connections. firstly, fcgi_server_connection is deleted. this deletes fcgi_application, which deletes fcgi_cgi. the sockets are member objects, so they are deleted as part of this. the actual problem is this: sometimes, after a socket is deleted, instead of oustanding read/write operations returning with asio::error::operation_aborted, they return with no error (error==0), but with socket.native() equal to -1. my understanding is that once the socket is deleted, all outstanding operations should be cancelled and operation_aborted should be returned. is this right? if so, what might cause the behaviour i'm seeing? and if not, what am i missing? thanks, - river.

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test framework / greg_month lexical cast segfault - is this fixed?
by Ákos Maróy 07 Jul '08

07 Jul '08

I'm trying to compile and run a very simple unit test using the boost test library on Windows with MinGW, and I'm running into a segfault problem. I searched around the issue, and it seems I've found references to such an issue from 2003: http://lists.boost.org/Archives/boost/2003/09/52920.php and there Jeff Garland says it's been fixed already. has it? I'm thinking it's the same issue based on this ticket: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11838 which points to the boost mailing list archive entry above. the test code is simply: #include <boost/test/unit_test.hpp> using namespace boost::unit_test; void test() { BOOST_CHECK(true); } test_suite * init_unit_test_suite(int, char **) { test_suite *ts = BOOST_TEST_SUITE("Test"); ts->add(BOOST_TEST_CASE(&test)); framework::master_test_suite().add(ts); return 0; } compiled with the following Makefile: CFLAGS=-I${INCLUDE_DIR} LDFLAGS=-enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl,-subsystem,windows -L${LIB_DIR} test: test.o g++ ${LDFLAGS} test.o -lboost_unit_test_framework-mt -lboost_test_exec_monitor-mt -o test test.o: test.cpp g++ ${CFLAGS} -c -o test.o test.cpp and gdb says: Program received signal SIGSEGV, Segmentation fault. 0x00418e7c in global constructors keyed to _ZN5boost9unit_test64_GLOBAL__N_libs_ test_src_unit_test_monitor.cpp_3F6EE7DC_ED9224E217unit_test_monitorE () (gdb) bt #0 0x00418e7c in global constructors keyed to _ZN5boost9unit_test64_GLOBAL__N_l ibs_test_src_unit_test_monitor.cpp_3F6EE7DC_ED9224E217unit_test_monitorE () #1 0x004273f7 in __main () #2 0x00401c78 in main () this is on a Windows XP box, with gcc 3.4.2 MinGW, using boost 1.35.0 am I doing something wrong? Akos

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Re: [Boost-users] When building should all the libraries have .dylib extensions on mac/unix?
by console shark 07 Jul '08

07 Jul '08

So it seems my problem is that my boost build is not making '.a' versions of all the libraries, only '.dylib' versions. Out of the box it should be building both? Or do I have to configure it to do that? ----- Original Message ---- From: David Philp <david.philp(a)anu.edu.au> To: boost-users(a)lists.boost.org Sent: Sunday, July 6, 2008 10:14:21 PM Subject: Re: [Boost-users] When building should all the libraries have .dylib extensions on mac/unix? On 07/07/2008, at 10:03 AM, console shark wrote: > I just downloaded boost 1.35 and built the standard config. I have a > collection of files in the /lib output folder that all end > in .dylib. I am specifically interested in the python boost library, > which is there as well. > > However the project that I am using that requires this library is > expecting a file that ends with a .so extension. > > Being new to unix/mac I am assuming these are the equivalent > differences between a .dll and .lib file on Windows? See http://developer.apple.com/documentation/Porting/Conceptual/PortingUnix/com… "dylib" is the usual Apple extension for a dynamically linked library, and "so" is the usual Linux / etc extension. They are otherwise the same thing. You should be able to use the .dylib file in place of the .so file. > In any case how do I get the .so or static lib version of python > boost? .a is the usual extension for statically linked libraries on Macs and Linux. (a being "archive") I have a libboost_python.a in the same place as libboost_python.dylib. AIUI .a is similar to .lib, and .so / .dylib are similar to .dll: they have similar roles, but there are important differences. D _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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[BGL] tree structure
by M. Siebeneicher 07 Jul '08

07 Jul '08

Hello list members, I'm evaluating the bgl library of boost for a while. Now I'm interessted in the question how to use bgl for managing a n-tree data structure. Is there a graph which checks if an existing vertex has an in-edge and prevents adding a second one? With kind regards, Manuel Siebeneicher -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer

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boost::asio breaks my DLL
by Simon Pickles 07 Jul '08

07 Jul '08

Hi, I am using boost 1.35 on MSVC2005, WinXP SP2, with the prebuilt boost libraries from www.boostpro.com. When trying to create a DLL, everything builds correctly. The DLL is correctly loaded by the exe, and the imported functions are visible. That is, until I add #include "boost//asio.hpp" to the DLL source. It still compiles and links, but at runtime I now get this error: LDR: LdrpWalkImportDescriptor() failed to probe x:\simon\Dev\xpworkingcopy\trunk\client\lib\Network.dll for its manifest, ntstatus 0xc0150002 This suggests the DLL has not had all its dependencies fulfilled, correct? I've tried putting boost_system-vc80-mt-gd-1_35.dll in my working directory, but no change. Can anyone help me? Thanks so much! Simon -- Linux Counter: User# 424693

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Converting an std::vector to std::wstring
by Sean Farrow 07 Jul '08

07 Jul '08

Hi: What is the best way (in terms of efficiency) to convert an std::vector of wchar_t to std::wstring. I can think of a oupple of aproaches: 1. using std::copy. 2. using boost::lexical_cast. 3 using boost::foreach 4. Usin he boost::serialization library. The std::wstring doesn't ned to be output to a file. Any advice apreciated. Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3244 (20080705) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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When building should all the libraries have .dylib extensions on mac/unix?
by console shark 07 Jul '08

07 Jul '08

I just downloaded boost 1.35 and built the standard config. I have a collection of files in the /lib output folder that all end in .dylib. I am specifically interested in the python boost library, which is there as well. However the project that I am using that requires this library is expecting a file that ends with a .so extension. Being new to unix/mac I am assuming these are the equivalent differences between a .dll and .lib file on Windows? In any case how do I get the .so or static lib version of python boost? Many thanks

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