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How to create a Graph with BOOST Bib (e.g. adjacency_list)?
by Konstantin Silav 22 Jan '10

22 Jan '10

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[Boost] [Fusion] Help with tuple adapter
by Bill Nell 22 Jan '10

22 Jan '10

Hi all, I'm having some trouble getting the boost fusion tuple adapter working (the one that makes boost::tuples into conforming sequence types). I'm assuming that the adapted tuple should now be a legal MPL sequence but mpl::is_sequence yields false and consequently mpl::for_each doesn't work on the tuple type either. The following program is an illustration of what I am trying to do. I guess I must be missing something simple? Any help would be appreciated. Bill #include <iostream> #include <typeinfo> #include <boost/mpl/is_sequence.hpp> #include <boost/mpl/for_each.hpp> #include <boost/fusion/tuple.hpp> #include <boost/fusion/sequence.hpp> #include <boost/fusion/iterator.hpp> #include <boost/fusion/mpl.hpp> #include <boost/fusion/adapted/boost_tuple.hpp> struct helper { template <typename TT> void operator()(TT) { std::cout << typeid(TT).name() << std::endl; } }; int main() { typedef boost::fusion::tuple<int,char,double> FTUP; typedef boost::tuple<int,char,double> BTUP; // this works std::cout << boost::mpl::is_sequence<FTUP>::value << std::endl; std::cout << "fusion tuple\n"; boost::mpl::for_each<FTUP>(helper()); // this doesn't work std::cout << boost::mpl::is_sequence<BTUP>::value << std::endl; // the following lines won't compile because the BTUP is not a // sequence type. //std::cout << "boost tuple\n"; //mpl::for_each<BTUP>(helper()); return 0; }

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Problems with boost serialization/shared_ptr/container
by Guo, Yanchao 22 Jan '10

22 Jan '10

Hi I am using boost/1.41.0, and the following code give me compilation error when I try to deserialize a shared_ptr. The serialize part it compiled successfully. Can someone advise me if this is a bug in my code or a general issue for boost? Thanks. Yanchao #include <iomanip> #include <iostream> #include <cstddef> // NULL #include <fstream> #include <string> #include <list> #include <cstdio> // remove #include <boost/config.hpp> #if defined(BOOST_NO_STDC_NAMESPACE) namespace std{ using ::remove; } #endif #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/archive/tmpdir.hpp> #include <boost/serialization/shared_ptr.hpp> #include <boost/serialization/list.hpp> #include <boost/serialization/map.hpp> #include <boost/shared_ptr.hpp> #include <list> #include <map> #include <string> #include <sstream> class A{ public: A(){} virtual ~A(){} private: friend class boost::serialization::access; template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & m_data; } int m_data; }; BOOST_SERIALIZATION_SHARED_PTR(A) typedef std::map<std::string, A > MyMap; BOOST_SERIALIZATION_SHARED_PTR(MyMap ) int main (){ boost::shared_ptr<std::map<std::string, A> > test_ptr; std::string data; std::stringstream buffer(data); boost::archive::text_iarchive ia(buffer); boost::archive::text_oarchive oa(buffer); ia >> test_ptr; //compile error oa << test_ptr; //this is ok return 1; } DISCLAIMER: This e-mail message and any attachments are intended solely for the use of the individual or entity to which it is addressed and may contain information that is confidential or legally privileged. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, copying or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately and permanently delete this message and any attachments.

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Q: N00b spinlock
by Moritz Moeller 21 Jan '10

21 Jan '10

I'm new to multi-threaded programming. So I apologize for aksing what is possibly a silly question. Will below code give me the behaviour of what is commonly called a "spinlock"? boost::unique_lock< boost::shared_mutex > guard( mutex, boost::try_to_lock ); if ( !guard.owns_lock() ) { while ( !guard.try_lock() ) { boost::thread::yield(); } } // access data Cheers, Moritz

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boost::thread object initialization. cannot understand.
by rabbitko＠tenbit.pl 21 Jan '10

21 Jan '10

hallo Group Members compilation of following simple program leads to an error: p1.cpp: In function "int main(int, char**)": p1.cpp:18: error: request for member "join" in "f", which is of non-class type "boost::thread(F (*)())" #include <boost/thread.hpp> #include <iostream> struct F { void operator()() { while (true) { std::cout << "hallo" << std::endl; } } }; int main(int argc, char *argv[]) { // boost::thread f = boost::thread(F()); // But with this line // instead, everything // is ok!! boost::thread f(F()); f.join(); return 0 ; } I am running fc12 with: prompt$ g++ --version g++ (GCC) 4.4.2 20091222 (Red Hat 4.4.2-20) Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. prompt$ rpm -qi boost Name : boost Relocations: (not relocatable) Version : 1.39.0 Vendor: Fedora Project Release : 8.fc12 Build Date: czw, 15 paĹş 2009, 15:15:15 Install Date: sob, 16 sty 2010, 13:38:26 Build Host: x86-3.fedora.phx.redhat.com Group : System Environment/Libraries Source RPM: boost-1.39.0-8.fc12.src.rpm Size : 0 License: Boost Signature : RSA/8, czw, 22 paĹş 2009, 10:57:44, Key ID 9d1cc34857bbccba Packager : Fedora Project URL : http://www.boost.org/ Summary : The Boost C++ Libraries Description : Boost provides free peer-reviewed portable C++ source libraries. The emphasis is on libraries which work well with the C++ Standard Library, in the hopes of establishing "existing practice" for extensions and providing reference implementations so that the Boost libraries are suitable for eventual standardization. (Some of the libraries have already been proposed for inclusion in the C++ Standards Committee's upcoming C++ Standard Library Technical Report.) have you got any explanation for this? Maybe I should learn C++ better? best regards, Michal

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[thread] NULL cleanup routine for thread_specific_pointer
by Jeremiah Willcock 21 Jan '10

21 Jan '10

There was a post in 2008 (http://lists.boost.org/boost-users/2008/05/36589.php) about using a NULL cleanup function for thread_specific_ptr, but no response to the issue. It appears that there is now a special case in the code for thread_specific_ptr to not call NULL cleanup functions; is this official (and thus can be relied upon)? I did not see it mentioned in the documentation. -- Jeremiah Willcock

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A [bimap] getting iterator on bimap second side
by ishay lavi 21 Jan '10

21 Jan '10

2 1

Problem in boost/boost_1_40/libs/serialization/example/demo.cpp
by John Austin 21 Jan '10

21 Jan '10

This is a versioning bug. The first of the following two lines is missing from the example shipped with 1.40: BOOST_CLASS_VERSION(bus_schedule::trip_info, 2) // missing from example // BOOST_CLASS_VERSION(bus_schedule, 2) // not necessary for example to work. When the schedule is recreated, the driver is not copied to the bus_schedule as the field is contained in the nested struct. When I replace the second macro with the first one, the example works.

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Question about the boost::thread_group
by watsonsong 21 Jan '10

21 Jan '10

I want to use thread_group for multi-thread, and maybe using it like this: void thread2(); void thread1(boost::thread_group& tg) { // create an other thread in the thread_group tg.create_thread(thread2); // do some work for(;;) { //... } } void thread2() { // do some work for(;;) { //... } } int main() { boost::thread_group tg; tg.create_thread(boost::bind(thread1, boost::ref(tg))); tg.join_all(); return 0; } I am puzzling about the join_all() function. Whether is it safe to invoke boost::thread_group::create_thread in an other thread and the join_all will wait for all the tow thread? I saw the source code of thread_group. It used a std::list to keep thread objects, and used a shared_mutex for synchronization. It lock on create_thread and shared lock on join_all. Is that mean if it run on "tg.join_all()" in main thread before "tg.create_thread(thread2);" in thread1, the "tg.create_thread(thread2);" will lead to a dead-lock because the "tg.join_all()" wait for thread1 finish, and thread1 wait for "tg.join_all()" finish on "tg.create_thread(thread2);" If it is so, how can I implement such a function? Thank you. -- View this message in context: http://old.nabble.com/Question-about-the-boost%3A%3Athread_group-tp27220440… Sent from the Boost - Users mailing list archive at Nabble.com.

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Re: [Boost-users] fusion struct adapt macro, construct the struct from a fusion vector
by Hicham Mouline 21 Jan '10

21 Jan '10

----- Original Message ----- From: "Hicham Mouline" <hicham(a)mouline.org> To: <boost-users(a)lists.boost.org> Sent: Tuesday, January 19, 2010 4:22 PM Subject: Re: [Boost-users] fusion struct adapt macro,construct the struct from a fusion vector >> What about: >> >> template <typename Seq> >> params(Seq const& seq, >> typename boost::enable_if< >> fusion::traits::is_sequence<Seq> >> >::type* = NULL); >> >> ? > > Fantastic. > > Here is the code I have (plz see below), but it seems there are issues > with const-ness that I don't understand. Following my previous attempt, replacing the functor applied by foreach to the zipped sequence by: struct assignelt { template <typename T> void operator()( const vector2<const T&, const T&>& seqpairs ) const { typedef vector2<const T&, const T&> pair_t; const_cast<T&>(at_c<0, const pair_t>(seqpairs)) = at_c<1, const pair_t>(seqpairs); } }; works. I can now construct my struct params from an equivalent fusion sequence. This constructor is identical for all my params struct. I have structs params1 to params100 Is there a way to factorise this ctor and not repeat its definition in the 100 struct params? Is this possible with a base struct templated on the derived struct? rds,

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Getting Original Regular Expression Out From sregex (Boost Xpressive)
by Yan Cheng Cheok 21 Jan '10

21 Jan '10

I have the following code. sregex rex = sregex::compile( "(\\w+) (\\w+)!" ); How I can get "(\w+) (\w+)!" out from rex? Thanks and Regards Yan Cheng CHEOK

2 1

[interprocess] shared map of string to string?
by Anthony Foiani 21 Jan '10

21 Jan '10

I'm using boost.interprocess to build a map from string to string that can be shared between multiple processes, with all read/write access protected by a mutex. I'm having a hard time making it work. Here's a cut-down version of the declaration: template < typename KeyType, typename ValueType, typename StoredKeyType = KeyType, typename StoredValueType = ValueType > class SharedMap : private boost::noncopyable { public: SharedMap( const std::string & shmName, const std::size_t shmSize, const std::size_t initBucketCount = 10 ); ~SharedMap(); void setOneValue( const KeyType & key, const ValueType & value ); bool getOneValue( const KeyType & key, ValueType & value ); void clear(); private: typedef std::pair< const StoredKeyType, StoredValueType > StoredPairType; typedef boost::interprocess::managed_shared_memory ShmManagerType; typedef boost::interprocess::allocator< StoredPairType, ShmManagerType::segment_manager > ShmAllocatorType; typedef boost::interprocess::interprocess_mutex ShmMutexType; typedef boost::interprocess::scoped_lock< ShmMutexType > ShmScopedLock; typedef boost::unordered_map< StoredKeyType, StoredValueType, boost::hash< StoredKeyType >, std::equal_to< StoredKeyType >, ShmAllocatorType > ShmMapType; std::string m_sShmName; ShmManagerType m_manager; ShmMutexType * m_pMutex; ShmMapType * m_pMap; }; // end class SharedMap typedef SharedMap< /* KeyType = */ std::string, /* ValueType = */ std::string, /* StoredKeyType = */ boost::interprocess::string, /* StoredValueType = */ boost::interprocess::string > SharedStringMap; And some important bits of the implementation: #define SHARED_MAP( ret_type ) \ template < \ typename KeyType, \ typename ValueType, \ typename StoredKeyType, \ typename StoredValueType \ > \ ret_type \ SharedMap< \ KeyType, \ ValueType, \ StoredKeyType, \ StoredValueType \ > SHARED_MAP()::SharedMap( const std::string & shmName, const std::size_t shmSize, const std::size_t initBucketCount /* = 10 */ ) : m_sShmName( shmName ), m_manager( boost::interprocess::open_or_create, shmName.c_str(), shmSize ), m_pMutex( m_manager.find_or_construct< ShmMutexType >( "mutex" )() ), m_pMap( m_manager.find_or_construct< ShmMapType >( "map" )( initBucketCount, boost::hash< StoredKeyType >(), std::equal_to< StoredKeyType >(), m_manager.get_allocator< StoredPairType >() ) ) { } SHARED_MAP()::~SharedMap() { try { m_pMutex->unlock(); } catch ( ... ) { } } SHARED_MAP( void )::clear() { ShmScopedLock lock( *m_pMutex ); m_pMap->clear(); } It works fine the first time I run the program, but on the second attempt I get a SIGSEGV when I try to clear the map. My test loop is basically: create or find map for each rep clear map insert values done GDB tells me that this error is originating here: Program received signal SIGSEGV, Segmentation fault. __libc_free (mem=0x8143a48) at malloc.c:3709 3709 if (chunk_is_mmapped(p)) /* release mmapped memory. */ (gdb) bt #0 __libc_free (mem=0x8143a48) at malloc.c:3709 #1 0x001efd12 in operator delete (ptr=<value optimized out>) at ../../../../libstdc++-v3/libsupc++/del_op.cc:44 #2 0x08053d49 in __gnu_cxx::new_allocator<char>::deallocate (this=0xb7fa4334, __p=0x8143a48 <Address 0x8143a48 out of bounds>) at /usr/lib/gcc/i686-redhat-linux/4.4.2/../../../../include/c++/4.4.2/ext/new_allocator.h:95 #3 0x0805e677 in boost::interprocess_container::containers_detail::basic_string_base<std::allocator<char> >::deallocate (this=0xb7fa4334, p=0x8143a48 <Address 0x8143a48 out of bounds>, n=24) at /usr/include/boost/interprocess/containers/container/string.hpp:309 #4 0x0805dac2 in boost::interprocess_container::containers_detail::basic_string_base<std::allocator<char> >::deallocate_block (this=0xb7fa4334) at /usr/include/boost/interprocess/containers/container/string.hpp:341 #5 0x0805d167 in boost::interprocess_container::containers_detail::basic_string_base<std::allocator<char> >::~basic_string_base (this=0xb7fa4334, __in_chrg=<value optimized out>) at /usr/include/boost/interprocess/containers/container/string.hpp:119 #6 0x0805bfe7 in {b::ic::string}::~basic_string (this=0xb7fa4334, __in_chrg=<value optimized out>) at /usr/include/boost/interprocess/containers/container/string.hpp:617 #7 0x0805d671 in std::pair<{b::ic::string} const, {b::ic::string} >::~pair (this=0xb7fa4334, __in_chrg=<value optimized out>) at /usr/lib/gcc/i686-redhat-linux/4.4.2/../../../../include/c++/4.4.2/bits/stl_pair.h:68 #8 0x08063636 in boost::unordered_detail::destroy<std::pair<{b::ic::string} const, {b::ic::string} > > (x=0xb7fa4334) at /usr/include/boost/unordered/detail/hash_table.hpp:233 #9 0x08062d55 in boost::unordered_detail::hash_table_data_unique_keys<ip::allocator<std::pair<{b::ic::string} const, {b::ic::string} >, ip::segment_manager<char, ip::rbtree_best_fit<ip::mutex_family, ip::offset_ptr<void>, 0u>, ip::iset_index> > >::allocators::destroy (this=0xb7f9f0d4, ptr=...) at /usr/include/boost/unordered/detail/hash_table_impl.hpp:133 #10 0x080619fc in boost::unordered_detail::hash_table_data_unique_keys<ip::allocator<std::pair<{b::ic::string} const, {b::ic::string} >, ip::segment_manager<char, ip::rbtree_best_fit<ip::mutex_family, ip::offset_ptr<void>, 0u>, ip::iset_index> > >::delete_to_bucket_end (this=0xb7f9f0d4, begin=...) at /usr/include/boost/unordered/detail/hash_table_impl.hpp:832 #11 0x0805fc63 in boost::unordered_detail::hash_table_data_unique_keys<ip::allocator<std::pair<{b::ic::string} const, {b::ic::string} >, ip::segment_manager<char, ip::rbtree_best_fit<ip::mutex_family, ip::offset_ptr<void>, 0u>, ip::iset_index> > >::clear_bucket ( this=0xb7f9f0d4, b=...) at /usr/include/boost/unordered/detail/hash_table_impl.hpp:867 #12 0x0805e2ff in boost::unordered_detail::hash_table_data_unique_keys<ip::allocator<std::pair<{b::ic::string} const, {b::ic::string} >, ip::segment_manager<char, ip::rbtree_best_fit<ip::mutex_family, ip::offset_ptr<void>, 0u>, ip::iset_index> > >::clear ( this=0xb7f9f0d4) at /usr/include/boost/unordered/detail/hash_table_impl.hpp:879 #13 0x0805d918 in boost::unordered_map<{b::ic::string}, {b::ic::string}, boost::hash<{b::ic::string} >, std::equal_to<{b::ic::string} >, ip::allocator<std::pair<{b::ic::string} const, {b::ic::string} >, ip::segment_manager<char, ip::rbtree_best_fit<ip::mutex_family, ip::offset_ptr<void>, 0u>, ip::iset_index> > >::clear (this=0xb7f9f0c4) at /usr/include/boost/unordered/unordered_map.hpp:271 #14 0x0805cdc3 in Tony::SharedMap<{std::string}, {std::string}, {b::ic::string}, {b::ic::string} >::clear (this=0xbffff40c) at SharedMap.cpp:203 #15 0x0804e3e4 in main (argc=1, argv=0xbffff744) at SharedMapTest.cpp:99 I've done the following substitutions: std::basic_string<char, std::char_traits<char>, std::allocator<char> > -> {std::string} boost::interprocess_container::basic_string<char, std::char_traits<char>, std::allocator<char> > -> {b::ic::string} ip:: -> ip:: Interestingly, it looks like the mutex survives program stops and starts just fine: if I try to run my test case a third time, it sits and waits on the mutex (which got locked just before the 'clear' crashed out in the 2nd invocation) Platform is GCC 4.4.2 (fedora rpm 4.4.2-20) with the RPM packages of boost (1.39.0-8). Any hints would be very much appreciated. I can get a full working test case up on the web, but I need to pull out some bits (especially from the test routine) that rely on other parts of my project. Alternately, if anyone knows of a freely-available implementation of this functionality (or, even better, one that stores std::strings directly instead of having to go to/from b::ip::strings, and maybe one that auto-sizes its shared memory pool)... I'd *definitely* like to hear about that. :) Thanks in advance! Regards, Tony

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[format] sample_formats.cpp using Mac OS X fails with GCC 4.2, but not GCC4.0.
by er 21 Jan '10

21 Jan '10

Hello, Has this problem already been reported somewhere? GCC 4.2 (default) : GNU gdb 6.3.50-20050815 (Apple version gdb-1346) (Fri Sep 18 20:40:51 UTC 2009) This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys007 run [Switching to process 37957] Running… Hello o oo O oo o (x,y) = ( , ) writing toto, x= : -th step (x,y) = ( , ) (x,y) = ( , ) (x,y) = ( , ) XXXX XXXX _ _ is : _ _, _ _, and __ by default Assertion failed: (s == " 11 22 "), function main, file /usr/local/boost_1_41_0/libs/format/example/sample_formats.cpp, line 76. Program received signal: “SIGABRT”. GCC 4.0 : [Session started at 2010-01-20 20:17:57 -0500.] GDB is free software, covered by the GNU General Public License, and you are This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys007 run [Switching to process 37989] Running… Hello 3 o oo O oo o (x,y) = ( -23, +35) writing toto, x=40.23 : 50-th step (x,y) = ( -23, +35) (x,y) = ( -23, +35) (x,y) = ( -23, +35) XX13 1 XX13 _ 18_ is : _0x12_, _ 022_, and _18_ by default %##0x14 boost::too_many_args: format-string referred to less arguments than were passed ***Dont worry, that was planned boost::too_few_args: format-string referred to more arguments than were passed ***Dont worry, that was planned Everything went OK, exiting.

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bimap<int, shared_ptr> question
by philip tucker 21 Jan '10

21 Jan '10

I want a bimap<int,shared_ptr> in which the rhs is ordered not by pointer, but by thing pointed to. Can you give me a simple example to follow? I know this is a naive question, but I have searched the docs long and hard for such an example. If one appears, I'd be interested in knowing where. Thanks in advance.

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[chrono] v0.3.1 Support for wide characters
by vicente.botet 20 Jan '10

20 Jan '10

Hi, this new version includes: * Added support for wide characters on formatters. * Added chrono.hpp and stopwatches.hpp header files at the boost level. * Update of the doc taking care of preceding comments. Comments are welcome :) Best, Vicente ----- Original Message ----- From: "vicente.botet" <vicente.botet(a)wanadoo.fr> To: <boost(a)lists.boost.org>; <boost-users(a)lists.boost.org> Sent: Sunday, January 17, 2010 9:14 PM Subject: [chrono] v0.3 New Stopwatch Feature Hi, I'm pleased to announce the new version of the Boost.Chrono library. The implementaton is quite stable; the new interface could suffer of some modifications, renaming, ... as far as you submit some proposals. I would request a formal review soon and I will need a review manager. I know that review managers are hard to find, so if you are interested in the library, please the Review Wizards. The library can be downloaded from http://www.boostpro.com/vault/index.php?action=downloadfile&filename=chrono… and the documentation is online on the sandbox http://svn.boost.org/svn/boost/sandbox/chrono/libs/chrono/doc/html/index.ht…. I've tested it with gcc and MSVC. Previoous version of the library have been testted on Mac, but I'm not able to test this platform. Could someone check if there are some regressions on Mac? New Features: * Process cpu clocks * Independent process cpu clocks for real, user, system process CPU time * Global process cpu clock for real, user, system process CPU time * Stopwatch concept measuring elapsed time between different points in time associated to the operations start, stop, suspend and resume. * stopwatch is a model Stopwatch measuring the elapsed time between the start and the stop operations. * stopwatch_accumulator is a model Stopwatch allowing to accumulate several time samples and give the average, ... * Scoped helper classes allowing to pairwise start/stop operations, suspend/resume and resume/suspend a Stopwatch. * Stopwatch Formatter concept * stopwatch formatter "%ds\n" * stopwatch accumulator formatter "%c times, sum%ss, min%ms, max%Ms, mean%as\n" * time formatter "real %rs, cpu %cs (%p%), user %us, system %ss\n" * digital_time decomposition class separating days, hours,minutes,seconds, nanoseconds from any duration class (looking for a better name) * digital_time formatter "%d days(s) %h:%m:%s.%n\n" * stopwatch_reporter is a convenient generic class reporting elapsed time for the Stopwatch concept. * stopclock<Clock> shortcut stopwatch_reporter<stopwatch<Clcok>> * typeof registration for classes duration and time_point Depreceated Features: * The classes process_times, process_clock, process_timer, timer and run_timer are now deprecated as the preceding additions are more generic. However for backward compatibility they are preserved until inclusion of the library in Boost. Next follows the equivalences: timer<> ~ stopwatch<> process_timer ~ stopwatch<process_cpu_clock> run_timer ~ stopclock<> Bug Fixes * Try to correct warning C4251: 'boost::chrono::run_timer::m_format' : class 'std::basic_string<_Elem,_Traits,_Ax>' needs to have dll-interface to be used by clients of class 'boost::chrono::run_timer', by don't including inlines functions using the std::string m_format. For people that doesn't know it yet, Boost.Chrono library provides: * The C++0x Standard Library's common_type. * The C++0x Standard Library's compile-time rational arithmetic. * The C++0x Standard Library's time utilities, including: * Class template duration * Class template time_point * Clocks: * system_clock * monotonic_clock * high_resolution_clock * typeof registration for classes duration and time_point * Process clocks: * process_real_CPU_clocks, capturing real-CPU times. * process_user_CPU_clocks, capturing user-CPU times. * process_system_CPU_clocks, capturing system-CPU times. * process_cpu_clock, tuple-like class capturing at once real, user-CPU, and system-CPU times. * Stopwatches: * stopwatch, capturing elapsed Clock times. * stopwatch_accumulator, capturing cummulated elapsed Clock times. * scoped helper classes allowing to pairwise start/stop operations, suspend/resume and resume/suspend a Stopwatch. * Stopclocks or Stopwatch reporters: * stopwatch_reporter, convenient reporting of models of Stopwatch results. * stopclock<Clock> shortcut of stopwatch_reporter<stopwatch<Clock>> Best regards, _____________________ Vicente Juan Botet Escribá

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[Boost][statechart] Any way to print events received by a state even discarded ones
by Babi Seal 20 Jan '10

20 Jan '10

Hi, I am struggling to figuring out when sometime I invoke process_event on a state-machine in a specific state I do not see the necessary transition taking place. I know I am in a specific state because I log everytime I enter a state. Post mortem also I use the custom_static_type_ptr and state_iterator code to print the state the machine is in and I am able to confirm that I am in that said state. I initially had defined a very straightforward state-machine and simple outer-state. And 9 out 10 times the simple event triggers the necessary transition but in a few instances I see no response/or transition. Is there some way to see if the event got silently discarded. Is it being queued to the state-machine, an exception event raised. I just want to understand what is happening. After the said event had occurred I print the state I expect to be in, print some member variables and things look ok so I am really at a loss for why the event would be just lost. Thanks - I really really appreciate any debugging guidance.

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Boost uBLAS Sparse Matrices Question
by Eamonn Hynes 20 Jan '10

20 Jan '10

Greetings users, Anyone know how to convert a matrix<int> to a compressed_vector<int> using the boost/numeric/ublas/ library? Here is a code snippet: #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/io.hpp> using namespace boost::numeric::ublas; using namespace std; #include <fstream> int A=2000; int D=2000; int main() { matrix<int> ADf(A,D); //Author-Document (full) fstream IN; IN.open("./eoh_ADf"); for(unsigned i=0;i<ADf.size1();++i) { for (unsigned j=0;j<ADf.size2();++j) { IN>>ADf(i,j); } } IN.close(); cout<<ADf<<endl; return 0; } I badly need to convert the matrix ADf into sparse form... Isn't there some function to convert ADf into ADs (AD sparse)? i.e. ADs=sparse(ADf)... Let's say ADf isn't a 2000x2000, but simply a 5x5: ADf=[[1,-1,0,-3,0],[-1,5,0,0,0],[0,0,4,6,4],[-3,0,6,7,0],[0,0,4,0,-5]] I want this converted to: values = [1 -1 -3 -2 5 4 6 4 -4 2 7 8 -5] columns = [1 2 4 1 2 3 4 5 1 3 4 2 5] rowIndex = [1 4 6 9 12 14] Any help that users can offer me would be much appreciated. Thanks in advance, Eamorr

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Serializing using base pointer gives "unregistered void cast" exception
by Christian Auby 20 Jan '10

20 Jan '10

Class hiarchy: --- Event EventNotification EventNotificationUser --- Each class calls boost::serialization::base_object<...>(*this); and has BOOST_CLASS_EXPORT_GUID(..., "...") at the end of their header. >From what I can gather from the manual this is what's needed for boost to know the types and be able to serialize them, but I still get "unregistered void cast" exception when I do this: EventNotificationUser e; Event* ep = &e; ar & ep; Thanks, Christian

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uBlas and openMP?
by mik 20 Jan '10

20 Jan '10

Hi all, I'm working on a project using uBlas. I'm using dense vector and dense matrix, the dimensions of these structures are very big. So, I was thinking about the opportunity to modify some algorithms of uBlas using multi-thread programming. I've tried to do this using openMP. Below, you find my first attempt. This is a piece of the original code in vector_assign.hpp // Explicitly indexing template<template <class T1, class T2> class F, class V, class E> // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it. void indexing_vector_assign (V &v, const vector_expression<E> &e) { typedef F<typename V::reference, typename E::value_type> functor_type; typedef typename V::size_type size_type; size_type size (BOOST_UBLAS_SAME (v.size (), e ().size ())); #ifndef BOOST_UBLAS_USE_DUFF_DEVICE for (size_type i = 0; i < size; ++ i) functor_type::apply (v (i), e () (i)); #else size_type i (0); DD (size, 2, r, (functor_type::apply (v (i), e () (i)), ++ i)); #endif } And I modified the inner for in this way: int i; #pragma omp parallel private(i) shared(v, e) { #pragma omp for for (i = 0; i < size; ++ i) functor_type::apply (v (i), e () (i)); } I tried the code and it run. Yes I know that it's better if I use the clause schedule in the pragma for, but the real question is: do you think that this code is enough general? Can I extend it with the operations? Thank you in advance Mirko --- Ad maiora semper.

1 0

Serialization of pointers ? --> loading not working ...
by Simon Ruffieux 20 Jan '10

20 Jan '10

Hello again ! I am continuing my structure serialization ... Seems I do not get something with pointers ... I have followed the "demo.cpp" example and tried to do the same as they are doing for pointers but I get an exception when trying to relaod my structure ! Hope someone can help me .... What I do: -Save a Particle structure. - this particle contains a SensoRreading class -this sensorReading has a pointer to a Sensor class (only containing a string) When I save(serialize) the particle, the file "out.txt" contains the following text: 22 serialization::archive 6 0 0 0 0 1.1000000000000001 4.4000000000000004 0 2.1000000000000001 8.4000000000000004 0 3 12.699999999999999 8.5 6 0 0 35 3 1 0 0 11 Sensor Name This seems correct to me ! But when I try to load it back in a particle using Particle p2 = Particle(); loadFromFile<text_iarchive>(p2, "out.txt"); It raises the follwoing error during compilation: wheelchair@wheelchair-laptop:~/playerstage/boostTest$<wheelchair@wheelchair-laptop:%7E/playerstage/boostTest$>g++ simple_RangeReading.cpp -o simple -lboost_serialization /usr/local/include/boost/archive/detail/iserializer.hpp: In static member function ‘static void boost::archive::detail::load_pointer_type<Archive>::invoke(Archive&, Tptr&) [with Tptr = const Sensor*, Archive = boost::archive::text_iarchive]’: /usr/local/include/boost/archive/detail/iserializer.hpp:554: instantiated from ‘void boost::archive::load(Archive&, T&) [with Archive = boost::archive::text_iarchive, T = const Sensor*]’ /usr/local/include/boost/archive/detail/common_iarchive.hpp:61: instantiated from ‘void boost::archive::detail::common_iarchive<Archive>::load_override(T&, int) [with T = const Sensor*, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/basic_text_iarchive.hpp:62: instantiated from ‘void boost::archive::basic_text_iarchive<Archive>::load_override(T&, int) [with T = const Sensor*, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/text_iarchive.hpp:66: instantiated from ‘void boost::archive::text_iarchive_impl<Archive>::load_override(T&, int) [with T = const Sensor*, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/interface_iarchive.hpp:61: instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = const Sensor*, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/interface_iarchive.hpp:68: instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator&(T&) [with T = const Sensor*, Archive = boost::archive::text_iarchive]’ simple_RangeReading.cpp:279: instantiated from ‘void SensorReading::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/serialization/access.hpp:109: instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = SensorReading]’ /usr/local/include/boost/serialization/serialization.hpp:74: instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = SensorReading]’ /usr/local/include/boost/serialization/serialization.hpp:133: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = SensorReading]’ /usr/local/include/boost/archive/detail/iserializer.hpp:173: instantiated from ‘void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::text_iarchive, T = SensorReading]’ simple_RangeReading.cpp:424: instantiated from here /usr/local/include/boost/archive/detail/iserializer.hpp:486: error: reinterpret_cast from type ‘const Sensor**’ to type ‘void**’ casts away constness /usr/local/include/boost/archive/detail/iserializer.hpp:489: error: no matching function for call to ‘boost::archive::detail::load_pointer_type<boost::archive::text_iarchive>::pointer_tweak(const boost::serialization::extended_type_info&, const Sensor*&, const Sensor&)’ /usr/local/include/boost/archive/detail/iserializer.hpp: In member function ‘void boost::archive::detail::pointer_iserializer<Archive, T>::load_object_ptr(boost::archive::detail::basic_iarchive&, void*&, unsigned int) const [with Archive = boost::archive::text_iarchive, T = const Sensor]’: simple_RangeReading.cpp:424: instantiated from here /usr/local/include/boost/archive/detail/iserializer.hpp:286: error: invalid conversion from ‘const void*’ to ‘void*’ /usr/local/include/boost/archive/detail/iserializer.hpp:294: error: invalid conversion from ‘const void*’ to ‘void*’ /usr/local/include/boost/archive/detail/iserializer.hpp:294: error: initializing argument 1 of ‘void boost::archive::detail::basic_iarchive::next_object_pointer(void*)’ /usr/local/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = const Sensor]’: /usr/local/include/boost/serialization/serialization.hpp:74: instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/serialization/serialization.hpp:133: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/archive/detail/iserializer.hpp:173: instantiated from ‘void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::text_iarchive, T = const Sensor]’ simple_RangeReading.cpp:424: instantiated from here /usr/local/include/boost/serialization/access.hpp:109: error: passing ‘const Sensor’ as ‘this’ argument of ‘void Sensor::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_iarchive]’ discards qualifiers /usr/local/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::construct(T*) [with T = const Sensor]’: /usr/local/include/boost/serialization/serialization.hpp:98: instantiated from ‘void boost::serialization::load_construct_data(Archive&, T*, unsigned int) [with Archive = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/serialization/serialization.hpp:163: instantiated from ‘void boost::serialization::load_construct_data_adl(Archive&, T*, unsigned int) [with Archive = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/archive/detail/iserializer.hpp:295: instantiated from ‘void boost::archive::detail::pointer_iserializer<Archive, T>::load_object_ptr(boost::archive::detail::basic_iarchive&, void*&, unsigned int) const [with Archive = boost::archive::text_iarchive, T = const Sensor]’ simple_RangeReading.cpp:424: instantiated from here /usr/local/include/boost/serialization/access.hpp:123: error: invalid conversion from ‘const void*’ to ‘void*’ /usr/local/include/boost/serialization/access.hpp:123: error: initializing argument 2 of ‘void* operator new(size_t, void*)’ /usr/local/include/boost/archive/detail/check.hpp: In function ‘void boost::archive::detail::check_const_loading() [with T = const Sensor]’: /usr/local/include/boost/archive/detail/iserializer.hpp:539: instantiated from ‘void boost::archive::load(Archive&, T&) [with Archive = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/archive/detail/common_iarchive.hpp:61: instantiated from ‘void boost::archive::detail::common_iarchive<Archive>::load_override(T&, int) [with T = const Sensor, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/basic_text_iarchive.hpp:62: instantiated from ‘void boost::archive::basic_text_iarchive<Archive>::load_override(T&, int) [with T = const Sensor, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/text_iarchive.hpp:66: instantiated from ‘void boost::archive::text_iarchive_impl<Archive>::load_override(T&, int) [with T = const Sensor, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/interface_iarchive.hpp:61: instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = const Sensor, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/serialization/nvp.hpp:87: instantiated from ‘void boost::serialization::nvp<T>::load(Archivex&, unsigned int) [with Archivex = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/serialization/access.hpp:101: instantiated from ‘static void boost::serialization::access::member_load(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/serialization/split_member.hpp:54: instantiated from ‘static void boost::serialization::detail::member_loader<Archive, T>::invoke(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/serialization/split_member.hpp:69: instantiated from ‘void boost::serialization::split_member(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/serialization/nvp.hpp:89: instantiated from ‘void boost::serialization::nvp<T>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_iarchive, T = const Sensor]’ /usr/local/include/boost/serialization/access.hpp:109: instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/serialization/serialization.hpp:74: instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/serialization/serialization.hpp:133: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/archive/detail/iserializer.hpp:349: instantiated from ‘static void boost::archive::detail::load_non_pointer_type<Archive>::load_only::invoke(Archive&, const T&) [with T = boost::serialization::nvp<const Sensor>, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/iserializer.hpp:415: instantiated from ‘static void boost::archive::detail::load_non_pointer_type<Archive>::invoke(Archive&, T&) [with T = const boost::serialization::nvp<const Sensor>, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/iserializer.hpp:554: instantiated from ‘void boost::archive::load(Archive&, T&) [with Archive = boost::archive::text_iarchive, T = const boost::serialization::nvp<const Sensor>]’ /usr/local/include/boost/archive/detail/common_iarchive.hpp:61: instantiated from ‘void boost::archive::detail::common_iarchive<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<const Sensor>, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/basic_text_iarchive.hpp:62: instantiated from ‘void boost::archive::basic_text_iarchive<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<const Sensor>, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/text_iarchive.hpp:66: instantiated from ‘void boost::archive::text_iarchive_impl<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<const Sensor>, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/interface_iarchive.hpp:61: instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = const boost::serialization::nvp<const Sensor>, Archive = boost::archive::text_iarchive]’ /usr/local/include/boost/archive/detail/iserializer.hpp:307: instantiated from ‘void boost::archive::detail::pointer_iserializer<Archive, T>::load_object_ptr(boost::archive::detail::basic_iarchive&, void*&, unsigned int) const [with Archive = boost::archive::text_iarchive, T = const Sensor]’ simple_RangeReading.cpp:424: instantiated from here /usr/local/include/boost/archive/detail/check.hpp:162: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’ /usr/local/include/boost/archive/detail/check.hpp:162: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’ wheelchair@wheelchair-laptop:~/playerstage/boostTest$<wheelchair@wheelchair-laptop:%7E/playerstage/boostTest$> Here is the code: #include <iostream> #include <iterator> #include <algorithm> #include <sstream> #include <fstream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/serialization/string.hpp> using namespace std; using namespace boost::archive; using namespace boost::serialization; /* * point * */ template <class T> struct point{ inline point():x(0),y(0) {} inline point(T _x, T _y):x(_x),y(_y){} T x, y; friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & x & y; } }; /* * OrientedPoint * */ template <class T, class A> struct orientedpoint: public point<T>{ inline orientedpoint() : point<T>(0,0), theta(0) {}; inline orientedpoint(const point<T>& p); inline void print(){cout << "(" << this->x << "," << this->y << "," << theta << ")";} A theta; friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & this->x & this->y & theta; } }; template <class T, class A> orientedpoint<T,A>::orientedpoint(const point<T>& p){ this->x=p.x; this->y=p.y; this->theta=0.; } /* * SensorReading * */ class Sensor{ public: Sensor(const std::string& name=""); virtual ~Sensor(); inline std::string getName() const {return m_name;} inline void setName(const std::string& name) {m_name=name;} friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & m_name; } protected: std::string m_name; }; Sensor::Sensor(const std::string& name){ m_name=name; } Sensor::~Sensor(){ } class SensorReading{ public: SensorReading(const Sensor* s=0, double time=0); virtual ~SensorReading(); inline double getTime() const {return m_time;} inline void setTime(double t) {m_time=t;} inline const Sensor* getSensor() const {return m_sensor;} inline void print(){ cout << "(" << m_time << "," << m_sensor->getName() << ")" << endl; } friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & m_time & m_sensor; } protected: double m_time; const Sensor* m_sensor; }; SensorReading::SensorReading(const Sensor* s, double t){ m_sensor=s; m_time=t; } SensorReading::~SensorReading(){} typedef orientedpoint<double, double> OrientedPoint; /* * Particle * */ struct Particle{ /**constructs a particle, given a map @param map: the particle map */ //Particle(const ScanMatcherMap& map); Particle(){}; /** @returns the weight of a particle */ inline operator double() const {return weight;} /** @returns the pose of a particle */ inline operator OrientedPoint() const {return pose;} /** sets the weight of a particle @param w the weight */ inline void setWeight(double w) {weight=w;} /** Display a particle */ inline void print(){ cout << endl<< "Particle: " << endl; cout << "-----------------" << endl; cout << "OrientedPoint pose: "; pose.print(); cout << endl; cout << "OrientedPoint previousPose: "; previousPose.print(); cout << endl; cout << "Weight: "<< weight << endl; cout << "WeightSum: "<< weightSum << endl; cout << "gweight: "<< gweight << endl; cout << "previousIndex: "<< previousIndex << endl; cout << "SensorReading: "; sr.print(); cout << endl; } /** The map */ //ScanMatcherMap map; /** The pose of the robot */ OrientedPoint pose; /** The pose of the robot at the previous time frame (used for computing thr odometry displacements) */ OrientedPoint previousPose; /** The weight of the particle */ double weight; /** The cumulative weight of the particle */ double weightSum; double gweight; /** The index of the previous particle in the trajectory tree */ int previousIndex; /** Entry to the trajectory tree */ //TNode* node; //Tests SensorReading sr; friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & pose & previousPose & weight & gweight & weightSum & previousIndex & sr; } }; /* * Particle * SaveToFile and LoadFromFile * */ template <class A> void saveIntoFile(Particle& particle, const char* file){ ofstream ofile(file); A ar(ofile); ar << particle; ofile.close(); } template <class A> void loadFromFile(Particle& particle, const char* file){ ifstream ifile(file); A ar(ifile); ar >> particle; ifile.close(); //return array; } /* * MAIN * */ int main(){ Particle p = Particle(); p.pose = OrientedPoint(point<double>(1.1,4.4)); p.previousPose = OrientedPoint(point<double>(2.1,8.4)); p.weight = 3; p.weightSum = 8.5; p.gweight = 12.7; p.previousIndex = 6; Sensor s= Sensor("Sensor Name"); p.sr = SensorReading(&s,35); p.print(); saveIntoFile<text_oarchive>(p, "out.txt"); Particle p2 = Particle(); loadFromFile<text_iarchive>(p2, "out.txt"); p2.print(); cout << "end" << endl; return 0; }

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[spirit] boost 1.33.1, HP-UX ia64 & gcc-3.4.6 - doesn't work with optimization (-O2)
by Frank Bergemann 20 Jan '10

20 Jan '10

Hi, we have confirmation now from hp, that they could reproduce the problem (pls. see below). We here decided to switch to a newer gcc compiler version. And doing so we will also switch to a newer boost lib version. Actually we already tried the 1.41.0 with the old gcc-3.4.4. But for that there was a not backwards compatible change in boost::spirit impl. and API. So as we don't have time to adapt our application, i guess we need to use the 1.40.0? cheers, Frank ---- reply from hp ---------------------------------------------------------------------------- > I kindly would like to ask you for confirmation of the problem. > Because i want to exclude that the problem is just due to our system > set-up here. > I would highly appreciate if you could try to re-produce the problem > (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42791) > and give us positive or negative confirmation. I ran the test case from the GCC bug report using GCC 3.4.5 and Boost 1.33.1 and was able to reproduce the problem on my system. > For decision making about new gcc compiler version to use, > i would like to ask you for a proposal - especially related to > performance issues. > Because there are difference gcc version packages available from your > download sites. Generally, I recommend using the most recent GCC version available. > If you confirm the problem, then it might also be helpful to add the > information to your web-site, porting guidelines, etc. > - for all your customers (they might hit the same problem) > Or ask gnu to fix it. The FSF is not going to fix anything on the 3.4.* branch, this branch is considered 'dead' and is no longer being maintained. [..] [...](a)cup.hp.com ______________________________________________________ GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de

1 0

[Serialization] Runtime error in load_pointer
by elizabeta petreska 19 Jan '10

19 Jan '10

Hello I do not have small working example, and can't reduce the problem to such. I know that is impossible to say what can be the problem from the following information, but still I 'll give it a try. I am getting runtime error in STL ( vector is out of range error ) when trying to load my shared pointer. The runtime error happens in basic_iarchive.cpp line line 431 : cobject_id_vector[i].bpis_ptr = bpis_ptr; I am using boost 1.41. Anyone has seen this error and maybe knows what can get to it. Thanks

3 5

Re: [Boost-users] [serialization] boost 1.33.1, HP-UX ia64 & gcc-3.4.4
by Frank Bergemann 19 Jan '10

19 Jan '10

sorry, the issue is not related to boost::serialization, but boost::spirit - see http://news.gmane.org/gmane.comp.lib.boost.user. Maybe it's even a gcc-3.4.6 bug on hp-ux B11.31 ia64 - see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42791 regards, Frank ___________________________________________________________ Preisknaller: WEB.DE DSL Flatrate für nur 16,99 Euro/mtl.! http://produkte.web.de/go/02/

1 0

Ease of use vs. stability
by Ruediger Berlich 19 Jan '10

19 Jan '10

Hi there, I am using a multitude of different Boost libraries in my code. Since that code is growing quickly, I am increasingly running into bugs which I (sometimes) consider to be on Boost's side. Allowing only selected Boost versions which are known to run fine with my code would allow me to keep that code simpler and thus less error-prone. As my main platform is Linux, however, which usually comes with a given version of Boost (currently often 1.39), my users would be forced to compile Boost themselves, which will mean that they are less likely to start using my code. If I generally allow all Boost versions above a given version, I have to work around known bugs in certain Boost versions, at the expense of code simplicity and thus stability. However, it will be easier for users to adopt my code. Which strategy did you pick for your code ? Kind Regards / Mit freundlichen Gruessen, Ruediger Berlich

3 3

[chrono] v0.3 New Stopwatch Feature
by vicente.botet 19 Jan '10

19 Jan '10

Hi, I'm pleased to announce the new version of the Boost.Chrono library. The implementaton is quite stable; the new interface could suffer of some modifications, renaming, ... as far as you submit some proposals. I would request a formal review soon and I will need a review manager. I know that review managers are hard to find, so if you are interested in the library, please the Review Wizards. The library can be downloaded from http://www.boostpro.com/vault/index.php?action=downloadfile&filename=chrono… and the documentation is online on the sandbox http://svn.boost.org/svn/boost/sandbox/chrono/libs/chrono/doc/html/index.ht…. I've tested it with gcc and MSVC. Previoous version of the library have been testted on Mac, but I'm not able to test this platform. Could someone check if there are some regressions on Mac? New Features: * Process cpu clocks * Independent process cpu clocks for real, user, system process CPU time * Global process cpu clock for real, user, system process CPU time * Stopwatch concept measuring elapsed time between different points in time associated to the operations start, stop, suspend and resume. * stopwatch is a model Stopwatch measuring the elapsed time between the start and the stop operations. * stopwatch_accumulator is a model Stopwatch allowing to accumulate several time samples and give the average, ... * Scoped helper classes allowing to pairwise start/stop operations, suspend/resume and resume/suspend a Stopwatch. * Stopwatch Formatter concept * stopwatch formatter "%ds\n" * stopwatch accumulator formatter "%c times, sum%ss, min%ms, max%Ms, mean%as\n" * time formatter "real %rs, cpu %cs (%p%), user %us, system %ss\n" * digital_time decomposition class separating days, hours,minutes,seconds, nanoseconds from any duration class (looking for a better name) * digital_time formatter "%d days(s) %h:%m:%s.%n\n" * stopwatch_reporter is a convenient generic class reporting elapsed time for the Stopwatch concept. * stopclock<Clock> shortcut stopwatch_reporter<stopwatch<Clcok>> * typeof registration for classes duration and time_point Depreceated Features: * The classes process_times, process_clock, process_timer, timer and run_timer are now deprecated as the preceding additions are more generic. However for backward compatibility they are preserved until inclusion of the library in Boost. Next follows the equivalences: timer<> ~ stopwatch<> process_timer ~ stopwatch<process_cpu_clock> run_timer ~ stopclock<> Bug Fixes * Try to correct warning C4251: 'boost::chrono::run_timer::m_format' : class 'std::basic_string<_Elem,_Traits,_Ax>' needs to have dll-interface to be used by clients of class 'boost::chrono::run_timer', by don't including inlines functions using the std::string m_format. For people that doesn't know it yet, Boost.Chrono library provides: * The C++0x Standard Library's common_type. * The C++0x Standard Library's compile-time rational arithmetic. * The C++0x Standard Library's time utilities, including: * Class template duration * Class template time_point * Clocks: * system_clock * monotonic_clock * high_resolution_clock * typeof registration for classes duration and time_point * Process clocks: * process_real_CPU_clocks, capturing real-CPU times. * process_user_CPU_clocks, capturing user-CPU times. * process_system_CPU_clocks, capturing system-CPU times. * process_cpu_clock, tuple-like class capturing at once real, user-CPU, and system-CPU times. * Stopwatches: * stopwatch, capturing elapsed Clock times. * stopwatch_accumulator, capturing cummulated elapsed Clock times. * scoped helper classes allowing to pairwise start/stop operations, suspend/resume and resume/suspend a Stopwatch. * Stopclocks or Stopwatch reporters: * stopwatch_reporter, convenient reporting of models of Stopwatch results. * stopclock<Clock> shortcut of stopwatch_reporter<stopwatch<Clock>> Best regards, _____________________ Vicente Juan Botet Escribá

3 3

[program_options] linking error with example
by katharina 19 Jan '10

19 Jan '10

Hi, I have problems starting out with the program_options library. Looking at the tutorial, I wanted to try out the first example metioned, first.cpp (which is located in boost_1_41_0/libs/program_options/example). But there seems to be some linking error. I try to compile it by g++ -I ~boost_1_41_0 first.cpp -o first ~/boost_1_41_0/stage/lib/libboost_program_options.a But then I get a strange error: /tmp/ccDB6KSC.o: In function `boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE12extra_parserENS_9function1ISt4pairISsSsERKSsSaINS_13function_baseEEEE[boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)]+0x27): undefined reference to `boost::program_options::detail::cmdline::set_additional_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)' collect2: ld returned 1 exit status What am I doing wrong? Thanks, Katharina

4 6

[spirit] boost 1.33.1, HP-UX ia64 & gcc-3.4.6 - doesn't work with optimization (-O2)
by Frank Bergemann 19 Jan '10

19 Jan '10

Hi, some supplementary information: The problem happens also for gcc-3.4.6 - which is the final version of gcc-3.x.x series. If i compile for 32 bit there is even a coredump for execution: (gdb) r Starting program: /nfs/uh01/frank/TESTX/sample test is '<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">' Program received signal SIGBUS, Bus error si_code: 1 - BUS_ADRALN - Invalid address alignment. Please refer to the following link that helps in handling unaligned data: http://docs.hp.com/en/7730/newhelp0610/pragmas.htm#pragma-pack-ex3. boost::spirit::grammar<basic_xml_grammar<char>,boost::spirit::parser_context<boost::spirit::nil_t> >::grammar (this=0x40025cf0) at sp_counted_base_gcc_ia64.hpp:38 38 "r"(pw)); I opened a bug for gcc: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42791 And i asked HP for confirmation. I'll keep you informed... best regards, Frank ___________________________________________________________ Preisknaller: WEB.DE DSL Flatrate für nur 16,99 Euro/mtl.! http://produkte.web.de/go/02/

1 0

fusion struct adapt macro, construct the struct from a fusion vector
by Hicham Mouline 19 Jan '10

19 Jan '10

Hello, I have a struct params { ... }; and I have adapted it as a fusion sequence. However I can't construct a params from a boost::fusion::vector<> with the same types. const params p( v ); // v is a fusion::vector with the same type const params p = v; // both failed to compile Do I need to actually write a specific ctor for params? Will it change the result of the adapt macro? Can I iterate with an algorithm over the vector at runtime to assign to p from v? with fusion::for_each() I couldn't write the functor that would let me assign to p. Regards,

3 4

[boost.asio] Flush serial port buffers?
by Pascal Kesseli 18 Jan '10

18 Jan '10

Hi everyone My program currently writes some characters to a device connected over the serial interface and subsequently changes the baud rate, followed by sending some more characters. The problem is that the first transfer does not seem to complete before the baud rate switch and thus is sent with the new baud rate, which is not supposed to happen. What I am looking for is something like a flush() before changing the baud rate. Using: boost::asio::write(*port, buffer(buf, size), transfer_all()); does not seem to work. Any suggestions? Thanks and best regards Pascal _________________________________________________________________ Personalisiere dein Messenger, inklusive persönliche Smileys ;-) Überrasche deine Freunde - wir zeigen dir wie's geht. http://rubrik.ch.msn.com/reportagen/personalisieren.aspx

1 0

Boost MultiArray and Boost uBLAS - Designed to be used together?
by Bilokon, Paul 18 Jan '10

18 Jan '10

Hi all, Were Boost MultiArray and Boost uBLAS designed to be used together? I.e. can I apply linear algebra operations to Boost MultiArrays and get Boost MultiArrays back? If this is impossible / impractical / inefficient, what's the right approach (conversion?). I would be very keen to know your thoughts on this. Many thanks for your help. Best wishes, Paul Paul Bilokon, Vice President Citigroup | FX - Options Trading | Quants 33 Canada Square | Canary Wharf | Floor 3 London, E14 5LB Phone: +44 20 798-62191 paul.bilokon(a)citi.com<mailto:paul.bilokon@citi.com>

3 6

[spirit] boost 1.33.1, HP-UX ia64 & gcc-3.4.4 - doesn't work with optimization (-O2)
by Frank Bergemann 18 Jan '10

18 Jan '10

Hello, i posted a problem against boost::serialization. (http://article.gmane.org/gmane.comp.lib.boost.user/54935) But now i could track it down to boost::spirit. I have extracted boost::serialization stuff , which is dealing with boost spirit, in a mini demo program (see attached tar file). It accepts XML input if compiled with -O0 or -O1 and returns: |hpux03 407> make sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O1 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c sample.cc /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O1 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c fbe_basic_xml_grammar.cc ./sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O1 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -lunwind -o sample sample.o fbe_basic_xml_grammar.o |hpux03 408> ./sample test is '<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">' parse_start_tag('<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">') returned 1 But it fails, if i use -O2 or -O3: |hpux03 411> make sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O2 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c sample.cc ./sample /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O2 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -c fbe_basic_xml_grammar.cc /usr/local/gcc-3.4.4/bin/g++ -g -mlp64 -Wall -mtune=itanium2 -O2 -I/nfs/uh01/frank/userspace/OPSC_DIAXHBS_dev_R2.2_hpport/include -lunwind -o sample sample.o fbe_basic_xml_grammar.o |hpux03 412> ./sample test is '<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">' parse_start_tag('<pDeleteHlrSubscriberIn class_id="0" tracking_level="0" version="0">') returned 0 Is it a bug of gcc-3.4.4? (for HP-UX B11.31 ia64?) Or boost::spirit using experimental C++ feature (for level of gcc-3.4.4)? - many thanks! Frank Bergemann ______________________________________________________ GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de

1 0

[boost][interval containers (itl)] New library release on sourceforge
by Joachim Faulhaber 18 Jan '10

18 Jan '10

Dear boost users, I have developed a library of interval containers called Interval Template Library (ITL). The library, initially developed in an software industrial context, was proposed at the boost developer's list in May 2008, refined according to boost standards, presented at boostcon09 and submitted for a formal review in September 2009. Hartmut Kaiser is now supporting the ITL as review manager. I have uploaded a new release of the core library of interval containers (itl), extensions (itl_xt) and a test tool (validate) for law based automated testings as itl_plus_3_2_1 at the itl's project site at sourceforge: http://sourceforge.net/projects/itl/ Interval_sets and interval_maps of the ITL proved to be very useful in many fields the most important of which is the date and time problem domain. * Interval_sets and interval_maps can be used like the sets or maps of elements. Yet they are much more space and time efficient when the elements occur in contiguous chunks. * Interval containers allow for intersection with interval_sets to work with segmentation. For instance you might want to intersect an interval container with a grid of months and then iterate over those months. * The ITL comes with a universal mechanism of aggregation, that allows to combine associated values in meaningful ways when intervals overlap on insertion. Aggregation results that are difficult to obtain by handwritten algorithms can be computed in an abstract and simple way. * itl::interval_bitset is a self compressing class to represent very large bitsets. It combines interval and bitset compression. * You can get an instant impression of the usefulness of interval containers by looking at the collection of examples: http://www.herold-faulhaber.de/boost_itl/doc/libs/itl/doc/html/boost_itl/ex… * To get an overview over the itl's api refer to http://www.herold-faulhaber.de/boost_itl/doc/libs/itl/doc/html/boost_itl/in… I hope you will find this useful. In case you do, I'd like to encourage you to send in your feed back and suggestions and to participate in the upcoming review on the boost developer's list. Best regards Joachim Faulhaber --------------------------------------------------------------------- Interval Template Library (ITL) | Boost.IntervalContainers --------------------------------------------------------------------- Availability: Project page at sourceforge: http://sourceforge.net/projects/itl/ Boost Vault: http://www.boostpro.com/vault/index.php?&direction=0&order=&directory=Conta… Boost Quickbook documentation (core library itl) http://www.herold-faulhaber.de/boost_itl/doc/libs/itl/doc/html/index.html Doxygen Documentation (extensions itl_xt, validate) http://www.herold-faulhaber.de/itl/index.html The name ITL is provisional and will probably be changed to Boost.IntervalContainers after the review.

1 0

[math][special_functions] Why is cbrt(x) slower than pow(x, 1/3)?
by Tim Odenthal 18 Jan '10

18 Jan '10

Hi! For a (cell) simulation code I have to calculate lots of cubic roots in every timestep. So I tried to improve performance on my first guess, namely pow(x, 1/3) using boost::math::cbrt(). To my astonishment, this is much slower than the original code. I wrote a small test program to check this claim; compiling with g++ (Ubuntu 4.4.1-4ubuntu9) 4.4.1 (-O3) on a Intel Core i7 CPU I get the following timings (averaging the time over 10 trials): average time to compute 5000000 roots with pow(): 0.603 s. average time to compute 5000000 roots with boost::cbrt(): 1.087 s. average time to compute 5000000 roots with improved boost::cbrt(): 1.015 s. average time to compute 5000000 roots with exp(1/3*log()): 0.541 s. My "improved" version allows giving the boost::math::cbrt() method a first guess instead of taking just the value of the number whose root is to be calculated. Actually, the function I called in this instance 5000000 times does a bit more than just calculating the root; I want to calculate the radii of to spheres which overlap so, that their combined volume is equal to the volume of a "mother sphere": /** * @brief calculates the radius of a daughter cell during symmetric division, * assuming the volume of the mother cell is conserved. * * @param MotherRadius radius of mother cell before division * @param Overlap of the two daughter cells, i.e. radius of daughter - * distance from center of daughter to middle-plane of * both cells * * @return for positive overlap returns positive radius, for negative overlap * negative radius **/ double daughterRadiusfOver( double MotherRadius, double Overlap) { // r = 1/2 (2 sqrt(R^6-h^3 R^3)-h^3+2 R^3)^(1/3)+h^2/(2 (2 sqrt(R^6-h^3 R^3)- h^3+2 R^3)^(1/3)) double O3 = Overlap*Overlap*Overlap; double M3 = MotherRadius*MotherRadius*MotherRadius; double step1 = pow(-O3 + 2*sqrt(-O3*M3 + M3*M3) + 2*M3,1.0/3.0);//<-- CUBIC ROOT HERE!!! Change to: // double step1 = boost::math::cbrt(-O3 + 2*sqrt(-O3*M3 + M3*M3) + 2*M3); if ( Overlap < 0 ){ cerr << "Warning in daughterRadiusfOver: Negative overlap given!" <<endl; return -(step1 + Overlap*Overlap/step1)*0.5; } else { return (step1 + Overlap*Overlap/step1)*0.5; } } Why is boost::math::cbrt() no improvement for me - or am I using it the wrong way? For which cases might it be an improvement, or why is it in the library? It's funny, but I found that std::exp(1/3*std::log(x)) is so far the fastest way... Thanks in advance Tim

5 6

boost::format warning
by Henning Meyer 16 Jan '10

16 Jan '10

Hello, when compiling a simple test like this: #include <boost/format.hpp> int main(void) { int c = 0; boost::format("%1% %2%") % (c==42) % c++; } with this command: $ c++ -c -O -Wall -o ftest.o ftest.cc I get this warning: ftest.cc: In function ‘int main()’: ftest.cc:4: warning: operation on ‘c’ may be undefined What did I do wrong? Thanks for the help! Henning $ c++ -v Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.1-4ubuntu8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu Thread model: posix gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) $ uname -a Linux treponema 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686 GNU/Linux

2 2

[filesystem] boost 1.41, hpux, gcc 440, compilation error solved
by Rui Pedro Fernandes 15 Jan '10

15 Jan '10

Hi, While trying to compile filesystem under HPUX because the WCHAR_MAX define value used was including a ')' character (because the value has a cast). The include file wchar.h defines the correct WCHAR_MAX if macro _INCLUDE_STDC__SOURCE_199901 is defined. I then solved the problem by changing the filesystem's Jamfile.v2 to add the lines: : requirements <host-os>hpux,<toolset>gcc:<define>_INCLUDE_STDC__SOURCE_199901 Don't know however if this is the best way to solve the issue... Thanks, Rui

1 0

Dead link on main page
by Tim St. Clair 15 Jan '10

15 Jan '10

Version 1.40.0.cmake2 (Boost + CMake) goes to no where. -- Cheers, Timothy St. Clair

1 0

[serialization] boost 1.33.1, HP-UX ia64 & gcc-3.4.4
by Frank Bergemann 15 Jan '10

15 Jan '10

Hi, for a porting job i needed to shift from OSF tru64 to HP-UX V3 ia64 (on both using gcc-3.4.4) There i have stream error exception for boost::serialization data import via XML. The exception is thrown here: include/boost/archive/impl/basic_xml_iarchive.ipp: template<class Archive> BOOST_ARCHIVE_OR_WARCHIVE_DECL(void) basic_xml_iarchive<Archive>::load_start(const char *name){ // if there's no name if(NULL == name) return; bool result = this->This()->gimpl->parse_start_tag(this->This()->get_is()); if(true != result){ boost::throw_exception( archive_exception(archive_exception::stream_error) ); } // don't check start tag at highest level ++depth; return; } I.e. it fails to parse the XML data via boost:spirit. I tried to debug with 'gdb', but was impossible for me at the level of boost::spirit parser implementation. Then i was remembering, that there are two sets of boost libs - one "normal" and a "debug" version. So i switched to the debug version - just to see, if i can better dig into the details with 'gdb' with it. And suddenly the problem was gone. I.e. my application works, if i link with libboost_serialization-gcc-d.a But it doesn't work, if i link with libboost_serialization-gcc.a I also tried to extract all the stuff from the boost::serialization, that is used by my application, into a little test program. Just to feed in the same XML string, that fails for my application. I wanted to see, that i can re-produce the problem - but for a minimum program. - for using that next to evaluate deeper. But - unfortunately - for my test programm it works (with both library versions, "debug" and "normal" one). So it is really hard to find the reason for the problem. I also checked about compiler support on the boost.org pages. And actually it was only boost lib 1.38.0, which mentions HP-UX IA64 together with gcc. But that was gcc-4.2.1 (i use 3.4.4.). Before 1.38.0, it was alway the HP native compiler (not gcc). After 1.38.0 HP-UX is not mentioned at all anymore. So i guess i am generally in bad conditions for my "constellation" (HP-UX ia64 V3, gcc-3.4.4, boost 1.33.1). What is the difference about "debug" lib image and "non-debug" lib image? Is it just optimization level for the compiler? Do you have any hint for me? It might be a problem of gcc-3.4.4 itself on hp-ux (i'll check). But it would be interesting to here, if s.o. else had the same problem(?!) - many thanks! Frank Bergemann ____________________________________________________________________ WEB.DE MillionenKlick: Kostenlos tippen, täglich 1 Million gewinnen! http://produkte.web.de/go/07/

2 1

How to use boost-build/bjam with only home directory acces?
by s seelenluft 15 Jan '10

15 Jan '10

Hi, I have successfully installed boost-build and bjam on a Linux workstation where I only had access to my home folder, but I have trouble replicating this on another. I put the boot-build folder at the top level of my home folder and created also a bin folder there into which I copied the content of boost-build folder and the bjam binary. I then added an environmental variable BOOSTROOT with the value '../' and set my jamroot file to <include>$BOOSTROOT. I can now start bjam from folders one level below the home folder. On a different Linux system this fails with the error: Unable to load Boost.Build: could not find "boost-build.jam" --------------------------------------------------------------- Attempted search from /afs/.../trunk-1 up to the root and in these directories from BOOST_BUILD_PATH and BOOST_ROOT: /usr/share/boost-build. Please consult the documentation at 'http://www.boost.org'. The boost-build.jam file sits in the same folder as bjam (~/bin) but on one system bjam finds it and on another it does not. The folder /usr/share/boost-build does not exist and I do not have the permission to create it. I've used boost-jam 3.1.13 on both systems (since it worked fine on one system, I was loth to change anything). This was the current version when I started the whole business. In short: Is there any way to tell bjam to use the local boost-build.jam file? Thanks. Markus

1 0

[karma] using attributes out of order
by Cory Nelson 15 Jan '10

15 Jan '10

Hello, I was fairly familiar with Spirit 1, but I'm now making my first foray into Spirit 2. I'm trying to write something with karma's attribute system. Say I've got a fusion adapted struct: struct s { int foo; double bar; std::string baz; }; The Spirit docs give plenty of examples like: int_ << double_ << string But I can't find any docs showing how to output the members in a different order, like: double_ << string << int_ Is there a recommended way to achieve this? Thanks! -- Cory Nelson

3 2

BoostJam sensitive to spaces in paths, in particular in TMP
by Bilokon, Paul 15 Jan '10

15 Jan '10

Hi all, Just found this, apparently a bug, in BoostJam. I'm using an admittedly old version of Boost, V1.36.0, in this particular instance. I'm using the latest BoostJam, V3.1.17. This occurs on Windows when the TMP environment variable contains spaces. In my case it was "C:\Documents and Settings\xxxxxxxxxxx\Local Settings\Temp" When you try to run something like C:\Programs\Win32\BoostJam\V3.1.17\bjam.exe --build-type=complete --toolset=msvc-90 --with-thread You get MkDir1-quick-fix-for-windows bin.v2\libs\thread 'C:\Documents' is not recognized as an internal or external command, operable program or batch file. if not exist "bin.v2\libs\thread\\" mkdir "bin.v2\libs\thread" ...failed MkDir1-quick-fix-for-windows bin.v2\libs\thread... This is fixed by set TMP=C:\temp I don't know if this merits a patch. Regards, Paul Paul Bilokon, Vice President Citigroup | FX - Options Trading | Quants 33 Canada Square | Canary Wharf | Floor 3 London, E14 5LB Phone: +44 20 798-62191 paul.bilokon(a)citi.com<mailto:paul.bilokon@citi.com>

2 1

read_graphviz in 1.4x series
by Cyrus Hall 15 Jan '10

15 Jan '10

Ciao all- I've been happily using the boost graph library for a number of months now. Thanks to everyone who has contributed to this great piece of software. After upgrading from boost 1.38 to 1.40 in Ubuntu, read_graphviz now prints to std::cerr the graph it has just read. I downloaded to the source code to make sure this wasn't some cruft left over by the Ubuntu package managers, and it seems these print statements are in the main distribution package. This change seems to correspond with a complete rewrite of the scanning and parsing underlying read_graphviz, which seems to have happened between 1.39 and 1.40. 1.41 contains no changes from 1.40 in read_graphviz_new.cpp. The particular offending lines of code are in translate_results_to_graph in read_graphviz_new.cpp, starting at line 760. This is called directly from detail::graph::read_graphviz on line 796. I see no obvious way to toggle these print statements. But I also can't find other messages about this problem, so I'm guessing I'm just missing something. Is there someway I can get read of this debugging output? Cheers, Cyrus

2 3

atomic read/write operations for integral types/pointers, just like tbb::atomic<T>.
by Michal 15 Jan '10

15 Jan '10

Hallo Group Members. Does boost::thread offer something that can act on integral types/pointers in atomic fashion, just like intel's tbb::atomic<T> does? best regards, Michal

1 0

[asio] asio-client only connects to server when on same machine
by Grotjahn Clemens (CM-AI/PJ-CF22) 15 Jan '10

15 Jan '10

hello, i just found out what was wrong. it was an empty, uninitialised string that indeed made my client connect only to localhost.... now everything is fine! thanks

1 0

Windows: Mixed .NET and native C++ with Boost
by Richwin, Dr. Matthias 15 Jan '10

15 Jan '10

Hi all, I try the following scenario: - a C++ library (my own code), unmanaged, makes use of boost (e.g. regex) - a C++ .NET application (windows forms based) planned as GUI (having used Borland C++ builder in the past, the windows forms approach looks quite appealing to me) - my C++ library header is included in the .Net form header file wrapped in a #pragma unmanaged/managed pair. I compiles and links well. For simple test purposes, I instantiate a class from my C++ library in the form constructor. Calling some unmanaged code from my library there creates a debug assertion: "Debug Assertion Failed! [...] Expression: _CrtIsValidHeapPointer(pUserData) " The call stack at that moment is as follows ("Application.exe" is my Windows Forms Application): > msvcr90d.dll!_msize_dbg(void * pUserData=0x8914c5e3, int nBlockUse=2) Zeile 1511 + 0x30 Bytes C++ msvcr90d.dll!_dllonexit_nolock(int (void)* func=0x89521903, void (void)* * * pbegin=0x0012f000, void (void)* * * pend=0x0012eff8) Zeile 295 + 0xd Bytes C msvcr90d.dll!__dllonexit(int (void)* func=0x89521903, void (void)* * * pbegin=0x0012f000, void (void)* * * pend=0x0012eff8) Zeile 273 + 0x11 Bytes C Application.exe!_onexit(int (void)* func=0x0046dce0) Zeile 110 + 0x1b Bytes C Application.exe!atexit(void (void)* func=0x0046dce0) Zeile 127 + 0x9 Bytes C Application.exe!boost::re_detail::`dynamic initializer for 'block_cache''() Zeile 191 + 0x2b Bytes C++ [Übergang von Verwaltet zu Systemeigen] Application.exe!_initterm(void** pfbegin = 0x0046E3A4, void pfend = ) Zeile 130 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::InitializeNative() Zeile 555 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::_Initialize() Zeile 678 C++ Application.exe!<CrtImplementationDetails>::LanguageSupport::Initialize() Zeile 876 C++ Application.exe!?.cctor@@$$FYMXXZ() Zeile 922 + 0x9 Bytes C++ [Unten angegebene Rahmen sind möglicherweise nicht korrekt und/oder fehlen, keine Symbole geladen für mscorwks.dll] ntdll.dll!7c91d39c() kernel32.dll!7c839736() ntdll.dll!7c91d39c() kernel32.dll!7c839736() kernel32.dll!7c809b32() kernel32.dll!7c80ae80() ntdll.dll!7c91dfac() kernel32.dll!7c8329b0() mscoree.dll!79007c24() kernel32.dll!7c817067() To me, it looks like the DLL initialization failed. Is anybody out there who might help me with this issue? I am completely new to this .Net thing... Best regards Matthias Leopold KOSTAL GmbH & Co. KG - Sitz Lüdenscheid, Registergericht Iserlohn HRA 2854, phG Kostal Verwaltungsgesellschaft mbH, Registergericht Iserlohn HRB 4061 - USt-Id-Nr./Vat No.: DE 125800885 Post- und Werksanschrift: An der Bellmerei 10, D-58513 Lüdenscheid * Telefon: +49 2351 16-0 * Telefax: +49 2351 16-2400 Bellmerei Geschäftsführung: Dipl.-Kfm. Helmut Kostal (Vorsitzender), Dipl.-Oec. Andreas Kostal, Dipl.-Wirtsch.-Ing. Hermann Eidel, Dipl.-Ing. Marwin Kinzl, Dr.-Ing. Ludger Laufenberg

3 2

[multiarray] problems passing views by reference
by Rhys Ulerich 14 Jan '10

14 Jan '10

Recently, Hanan Sadar asked about a multi_array fill implementation [1]. The standard std::fill_n(x.data(),x.num_elements(),v) answer only works when x is a boost::multi_array or boost::multi_array_ref but does not handle the general MultiArray concept. I decided to implement an arbitrary dimensional MultiArray fill capable of handling such views correctly. It's been absolutely miserable for reasons I don't understand but which resemble comments from James Amundson's recent thread [2]. Attached is my attempt with two exasperating lines marked by "Cannot use reference, why?". For a non-multi_array, non-multi_array_ref instance (i.e. a view) using a signature like template< class Array, class V > void operator()(Array x, const V &v); allows the code to compile and operate correctly. However, it incurs pass-by-value overhead. Using a signature like template< class Array, class V > void operator()(Array &x, const V &v); using pass-by-reference dies at compilation time. All of my attempts to use MultiArray's associated typedefs die, including hours of mucking with MultiArray::reference. What am I missing here? Why can't I pass a general MultiArray view type by reference? - Rhys [1] http://groups.google.com/group/boost-list/browse_thread/thread/829ebea7fef2… [2] http://groups.google.com/group/boost-list/browse_thread/thread/4531a7c35a58…

2 3

Re: [Boost-users] [asio] asio-client only connects to server when on same machine
by Jason Felice 14 Jan '10

14 Jan '10

On Thu, Jan 14, 2010 at 10:25 AM, Nicola Michael Gutberlet <Nicola.Gutberlet(a)hhi.fraunhofer.de> wrote: > Just an idea popping up in my mind: firewall? More likely, the server binds to localhost (loopback).

1 0

boost python macro hell
by Neal Becker 14 Jan '10

14 Jan '10

Probably OT, but I'm trying to generate modules programmatically. Each module with be generated using -DSIMCASE=n and will create a module called ldpc_n.so. I can't get this macro to work, this is my latest try: #define SIMCASE 10 #define NAME ldpc_ ## SIMCASE #define MODULE_START BOOST_PYTHON_MODULE (NAME) Later I have: MODULE_START { ... } Results in: In file included from ldpc_x.cc:12: ldpc.cc: In function 'void initldpc_SIMCASE()': ldpc.cc:100: error: 'init_module_ldpc_SIMCASE' was not declared in this scope Looks like 2 problems there: 1 is that 'SIMCASE' did not have it's #defined value substituted, second is that (as evidenced by the error) this interacted wierdly with the BOOST_PYTHON_MODULE macro.

3 4

Re: [Boost-users] variadic template function using fusion vector
by noman javed 14 Jan '10

14 Jan '10

We want to hide from user the creation of the vector. The user just need to call the execute function like that execute(FOB,bar1,bar2,...,barn). Where the FOB is any function object followed by the original data. Regards Noman Javed

3 2

[variant][graph] Conflict ?
by Maxime van Noppen 14 Jan '10

14 Jan '10

Hi, I recently upgraded the boost version used four our project from boost 1.39 to boost 1.41 and encountered a very strange compilation error. I managed to reduce the problem to this minimal test case : ----------var.cc--------------- #include <boost/variant.hpp> #include <boost/graph/breadth_first_search.hpp> int main() { boost::variant<char, bool> v; boost::get<int>(v); } ---------------------------- This doesn't compile on Linux 64bits with gcc 4.4.2 20091208 and produces this error message : ---------------------------- > In file included from /usr/include/boost/graph/graph_concepts.hpp:17, > from /usr/include/boost/graph/breadth_first_search.hpp:21, > from var.cc:2: > /usr/include/boost/property_map/property_map.hpp: In instantiation of ‘boost::property_traits<int>’: > /usr/include/boost/graph/two_bit_color_map.hpp:46: instantiated from ‘boost::two_bit_color_map<int>’ > var.cc:8: instantiated from here > /usr/include/boost/property_map/property_map.hpp:31: error: ‘int’ is not a class, struct, or union type > /usr/include/boost/property_map/property_map.hpp:32: error: ‘int’ is not a class, struct, or union type > /usr/include/boost/property_map/property_map.hpp:33: error: ‘int’ is not a class, struct, or union type > /usr/include/boost/property_map/property_map.hpp:34: error: ‘int’ is not a class, struct, or union type ---------------------------- Could there be a conflict between boost.variant and boost.graph or did I miss something ? Thanks, -- Maxime

2 4

[asio] asio-client only connects to server when on same machine
by Grotjahn Clemens (CM-AI/PJ-CF22) 14 Jan '10

14 Jan '10

hi everybody, i have an issue with my asio-client that wants to connect to an asio-server. when i set my server on a machine in our network to listening on a port (>1024) and then try to connect with my client via this port, i get a "Connection refused"-exception. this happens every time the server and client are located on different machines. if i try this on the same machine it works fine! also, if i try to connect via telnet from another machine it works! here's the client-setup-code snippet, maybe i missed a special config there?: tcp::resolver resolver( _io ); //_io is class-member tcp::resolver::query query( server, port ); //server and port are char-buffers tcp::resolver::iterator iter = resolver.resolve( query ); _socket = new tcp::socket( _io ); tcp::resolver::iterator end; // End marker. boost::system::error_code error = error::host_not_found; while (error && iter != end) { _socket->close(); _socket->connect(*iter++, error); } if (error) throw boost::system::system_error( error ); } catch( std::exception& e ) { cout << "NetClient Konstruktor: " << e.what() << endl; }

2 1

[GIL] Black filled or not ?
by Eloi Du Bois 14 Jan '10

14 Jan '10

Hi all ! I would like to know, when creating an image like that: rgb32f_image_t img(w, h); is the image filled with 0 by default or should I call fill_pixels ? Thank you ! Eloi.

4 8

Re: [Boost-users] [math][special_functions] Why is cbrt(x) slower than pow(x, 1/3)?
by Tim Odenthal 14 Jan '10

14 Jan '10

On Thursday 14 January 2010 07:14:28 boost-users-request(a)lists.boost.org wrote: > So I tried to improve performance on my first guess, namely > > > pow(x, > > 1/3) using boost::math::cbrt(). To my astonishment, this is much slower > > than > > the original code. I wrote a small test program to check this claim; > > compiling > > with g++ (Ubuntu 4.4.1-4ubuntu9) 4.4.1 (-O3) on a Intel Core i7 CPU I get > > the > > following timings (averaging the time over 10 trials): > > average time to compute 5000000 roots with pow(): 0.603 s. > > average time to compute 5000000 roots with boost::cbrt(): 1.087 s. > > average time to compute 5000000 roots with improved boost::cbrt(): 1.015 > > s. > > average time to compute 5000000 roots with exp(1/3*log()): 0.541 s. > > I'll investigate that - I admit I haven't profiled that function up till > now - and I suspect you're on the right lines by suspecting that the > current implementation may be slow in finding the initial starting guess. > > I suspect that some of the std:: functions may be faster if they're > implemented as intrinsics, BTW have you tried ::cbrt in math.h ? > > Cheers, John. > Hi! Thanks a lot for the suggestion: I didn't know that std::cbrt() exists! I alway relied on cplusplus.com as reference; I will have to change that! Of course this is again a lot faster: average time to compute 5000000 roots with pow(): 0.613 s. average time to compute 5000000 roots with cbrt(): 0.464 s. Thanks again - I am happy now... ;-) Tim

2 1

[regex] Generate matching string
by Roland Bock 14 Jan '10

14 Jan '10

Hi, given a regex, is there a way to create sample strings which would match? Of course, for many patterns, the number of possible strings would be practically infinite. But sometimes it would be helpful to have even one sample of a matching string. Any ideas? Thanks and regards, Roland

1 0

asio: selective cancellation of reads/writes
by Alexander Fritze 14 Jan '10

14 Jan '10

Hi, In asio, if I have a socket with pending asynchronous reads and writes, is there a way to selectively cancel only the reads or only the writes? All I can find is basic_stream_socket::cancel() which closes *all* pending operations on the socket. Thanks for any help, Alex

2 2

trouble with spirit (boost 1.39)
by Noah Roberts 13 Jan '10

13 Jan '10

void read_formula_line(esi::string_t const& line, table_fluid_data & data) { namespace sp = boost::spirit::classic; using namespace sp; unsigned int index = 0; parse_info<wchar_t const*> info = sp::parse(line.c_str(), // begin grammar ( L'P' >> uint_p[assign_a(index)] //>> uint_p[assign_a(data.formulas[index-1].formula_id)] >> uint_p[boost::bind(&assign_i, _1, boost::ref(data.formulas [index-1].formula_id))] >> real_p[boost::bind(&assign_dbl, _1, boost::ref(data.formulas [index-1].coefficients[0]))] //>> real_p[assign_a(data.formulas[index-1].coefficients[0])] >> real_p[assign_a(data.formulas[index-1].coefficients[1])] >> real_p[assign_a(data.formulas[index-1].coefficients[2])] >> real_p[assign_a(data.formulas[index-1].coefficients[3])] >> real_p[assign_a(data.formulas[index-1].coefficients[4])] >> lexeme_d[*space_p] // necessary to clip off the last bit. ) , space_p); if (!info.full) throw std::runtime_error("Parse fail in formula line."); } The line is being parsed by the above code but the values are not being assigned by the assign_a nor by the boost::bind call to my own val = x setters. The setters are being called correctly, but the data is not getting through for some reason. It's like the data structure is being copied instead of referenced but I'm explicitely using references. Any idea what gives?

1 1

Building 1.41 for win64 with python
by Tom Kent 13 Jan '10

13 Jan '10

I googled around for this, but didn't find any answers. I'm building 64 bit libraries for visual studio on a 32 bit win XP box and getting the attached linker errors. I get similar results with visual studio 8 and 9. Any thoughts? Thanks, Tom C:\BoostBuilding\boost_1_41_0>"c:\Program Files\boost-jam-3.1.17-1-ntx86\bjam.exe" toolset=msvc-8.0 address-model=64 variant=debug threading=multi link=shared runtime-link=shared stage warning: Building Boost.Regex with the optional Unicode/ICU support disabled. note: Please refer to the Boost.Regex documentation for more information note: this is a strictly optional feature. warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. warning: Graph library does not contain MPI-based parallel components. note: to enable them, add "using mpi ;" to your user-config.jam warning: skipping optional Message Passing Interface (MPI) library. note: to enable MPI support, add "using mpi ;" to user-config.jam. note: to suppress this message, pass "--without-mpi" to bjam. note: otherwise, you can safely ignore this message. ...patience... ...patience... ...patience... ...found 6283 targets... ...updating 6 targets... msvc.link.dll bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.dll Creating library bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.lib and object bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.exp function.obj : error LNK2001: unresolved external symbol __imp_PyErr_Format numeric.obj : error LNK2019: unresolved external symbol __imp_PyErr_Format referenced in function "void __cdecl boost::python::numeric::`anonymous namespace'::throw_load_failure(void)" (?throw_load_failure@?A0x9ac8f308@numeric@python@boost@@YAXXZ) from_python.obj : error LNK2001: unresolved external symbol __imp_PyErr_Format registry.obj : error LNK2001: unresolved external symbol __imp_PyErr_Format class.obj : error LNK2001: unresolved external symbol __imp_PyErr_Format numeric.obj : error LNK2001: unresolved external symbol __imp_PyExc_ImportError numeric.obj : error LNK2019: unresolved external symbol __imp_PyErr_Clear referenced in function "bool __cdecl boost::python::numeric::`anonymous namespace'::load(bool)" (?load@?A0x9ac8f308@numeric@python@boost@@YA_N_N@Z) class.obj : error LNK2001: unresolved external symbol __imp_PyErr_Clear function.obj : error LNK2001: unresolved external symbol __imp_PyErr_Clear object_protocol.obj : error LNK2001: unresolved external symbol __imp_PyErr_Clear numeric.obj : error LNK2019: unresolved external symbol __imp_PyCallable_Check referenced in function "bool __cdecl boost::python::numeric::`anonymous namespace'::load(bool)" (?load@?A0x9ac8f308@numeric@python@boost@@YA_N_N@Z) class.obj : error LNK2001: unresolved external symbol __imp_PyCallable_Check object_protocol.obj : error LNK2001: unresolved external symbol __imp_PyObject_GetAttrString wrapper.obj : error LNK2001: unresolved external symbol __imp_PyObject_GetAttrString numeric.obj : error LNK2019: unresolved external symbol __imp_PyObject_GetAttrString referenced in function "bool __cdecl boost::python::numeric::`anonymous namespace'::load(bool)" (?load@?A0x9ac8f308@numeric@python@boost@@YA_N_N@Z) enum.obj : error LNK2001: unresolved external symbol __imp_PyObject_GetAttrString class.obj : error LNK2001: unresolved external symbol __imp_PyObject_GetAttrString function.obj : error LNK2001: unresolved external symbol __imp_PyObject_GetAttrString numeric.obj : error LNK2019: unresolved external symbol __imp_PyImport_Import referenced in function "bool __cdecl boost::python::numeric::`anonymous namespace'::load(bool)" (?load@?A0x9ac8f308@numeric@python@boost@@YA_N_N@Z) numeric.obj : error LNK2019: unresolved external symbol __imp_PyObject_IsInstance referenced in function "public: static bool __cdecl boost::python::numeric::aux::array_object_manager_traits::check(struct _object *)" (?check@array_object_manager_traits@aux@numeric@python@boost@@SA_NPEAU_object@@@Z) from_python.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsInstance class.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsInstance enum.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction class.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction stl_iterator.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction numeric.obj : error LNK2019: unresolved external symbol __imp_PyEval_CallFunction referenced in function "class boost::python::api::object __cdecl boost::python::call<class boost::python::api::object,class boost::python::api::object>(struct _object *,class boost::python::api::object const &,struct boost::type<class boost::python::api::object> *)" (??$call@Vobject@api@python@boost@@V1234@@python@boost@@YA?AVobject@api@01@PEAU_object@@AEBV2301@PEAU?$type@Vobject@api@python@boost@@@1@@Z) list.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction dict.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction str.obj : error LNK2001: unresolved external symbol __imp_PyEval_CallFunction numeric.obj : error LNK2019: unresolved external symbol __imp_PyInt_FromLong referenced in function "public: __cdecl boost::python::converter::arg_to_python<long>::arg_to_python<long>(long const &)" (??0?$arg_to_python@J@converter@python@boost@@QEAA@AEBJ@Z) enum.obj : error LNK2001: unresolved external symbol __imp_PyInt_FromLong function.obj : error LNK2001: unresolved external symbol __imp_PyInt_FromLong function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyInt_FromLong numeric.obj : error LNK2019: unresolved external symbol __imp_PyBool_FromLong referenced in function "public: __cdecl boost::python::converter::arg_to_python<bool>::arg_to_python<bool>(bool const &)" (??0?$arg_to_python@_N@converter@python@boost@@QEAA@AEB_N@Z) class.obj : error LNK2001: unresolved external symbol __imp_PyBool_FromLong numeric.obj : error LNK2019: unresolved external symbol __imp_PyString_FromStringAndSize referenced in function "public: __cdecl boost::python::converter::arg_to_python<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::arg_to_python<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0?$arg_to_python@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@converter@python@boost@@QEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) str.obj : error LNK2001: unresolved external symbol __imp_PyString_FromStringAndSize builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyString_FromStringAndSize function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyString_FromStringAndSize wrapper.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct import.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct exec.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct function_doc_signature.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct iterator.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct stl_iterator.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct object_protocol.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct object_operators.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct life_support.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct pickle_support.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct module.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct builtin_converters.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct registry.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct enum.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct class.obj : error LNK2019: unresolved external symbol __imp__Py_NoneStruct referenced in function "struct _object * __cdecl boost::python::api::object_base_initializer<bool>(bool const &)" (??$object_base_initializer@_N@api@python@boost@@YAPEAU_object@@AEB_N@Z) function.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct tuple.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct str.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct slice.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct from_python.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct numeric.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct list.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct long.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct dict.obj : error LNK2001: unresolved external symbol __imp__Py_NoneStruct str.obj : error LNK2001: unresolved external symbol __imp_PyObject_CallFunction class.obj : error LNK2001: unresolved external symbol __imp_PyObject_CallFunction list.obj : error LNK2019: unresolved external symbol __imp_PyObject_CallFunction referenced in function "private: static struct boost::python::detail::new_non_null_reference_t * __cdecl boost::python::detail::list_base::call(class boost::python::api::object const &)" (?call@list_base@detail@python@boost@@CAPEAUnew_non_null_reference_t@234@AEBVobject@api@34@@Z) long.obj : error LNK2001: unresolved external symbol __imp_PyObject_CallFunction dict.obj : error LNK2001: unresolved external symbol __imp_PyObject_CallFunction tuple.obj : error LNK2001: unresolved external symbol __imp_PyObject_CallFunction list.obj : error LNK2001: unresolved external symbol __imp_PyList_Type list.obj : error LNK2019: unresolved external symbol __imp_PyList_New referenced in function "protected: __cdecl boost::python::detail::list_base::list_base(void)" (??0list_base@detail@python@boost@@IEAA@XZ) list.obj : error LNK2019: unresolved external symbol __imp_PyList_Append referenced in function "public: void __cdecl boost::python::detail::list_base::append(class boost::python::api::object const &)" (?append@list_base@detail@python@boost@@QEAAXAEBVobject@api@34@@Z) list.obj : error LNK2019: unresolved external symbol __imp_PyInt_AsLong referenced in function "public: long __cdecl boost::python::detail::list_base::index(class boost::python::api::object const &)const " (?index@list_base@detail@python@boost@@QEBAJAEBVobject@api@34@@Z) str.obj : error LNK2001: unresolved external symbol __imp_PyInt_AsLong class.obj : error LNK2001: unresolved external symbol __imp_PyInt_AsLong builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyInt_AsLong list.obj : error LNK2019: unresolved external symbol __imp_PyList_Insert referenced in function "public: void __cdecl boost::python::detail::list_base::insert(__int64,class boost::python::api::object const &)" (?insert@list_base@detail@python@boost@@QEAAX_JAEBVobject@api@34@@Z) pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred stl_iterator.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred list.obj : error LNK2019: unresolved external symbol __imp_PyErr_Occurred referenced in function "public: void __cdecl boost::python::detail::list_base::insert(class boost::python::api::object const &,class boost::python::api::object const &)" (?insert@list_base@detail@python@boost@@QEAAXAEBVobject@api@34@0@Z) str.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred enum.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred function.obj : error LNK2001: unresolved external symbol __imp_PyErr_Occurred list.obj : error LNK2019: unresolved external symbol __imp_PyList_Reverse referenced in function "public: void __cdecl boost::python::detail::list_base::reverse(void)" (?reverse@list_base@detail@python@boost@@QEAAXXZ) list.obj : error LNK2019: unresolved external symbol __imp_PyList_Sort referenced in function "public: void __cdecl boost::python::detail::list_base::sort(void)" (?sort@list_base@detail@python@boost@@QEAAXXZ) list.obj : error LNK2019: unresolved external symbol __imp_PyLong_FromLongLong referenced in function "public: __cdecl boost::python::converter::arg_to_python<__int64>::arg_to_python<__int64>(__int64 const &)" (??0?$arg_to_python@_J@converter@python@boost@@QEAA@AEB_J@Z) long.obj : error LNK2001: unresolved external symbol __imp_PyLong_Type builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyLong_Type dict.obj : error LNK2001: unresolved external symbol __imp_PyDict_Type enum.obj : error LNK2001: unresolved external symbol __imp_PyDict_Type dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_New referenced in function "protected: __cdecl boost::python::detail::dict_base::dict_base(void)" (??0dict_base@detail@python@boost@@IEAA@XZ) class.obj : error LNK2001: unresolved external symbol __imp_PyDict_New dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_Clear referenced in function "public: void __cdecl boost::python::detail::dict_base::clear(void)" (?clear@dict_base@detail@python@boost@@QEAAXXZ) dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_Copy referenced in function "public: class boost::python::dict __cdecl boost::python::detail::dict_base::copy(void)" (?copy@dict_base@detail@python@boost@@QEAA?AVdict@34@XZ) dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_GetItem referenced in function "public: class boost::python::api::object __cdecl boost::python::detail::dict_base::get(class boost::python::api::object const &)const " (?get@dict_base@detail@python@boost@@QEBA?AVobject@api@34@AEBV5634@@Z) function.obj : error LNK2001: unresolved external symbol __imp_PyDict_GetItem dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_Items referenced in function "public: class boost::python::list __cdecl boost::python::detail::dict_base::items(void)const " (?items@dict_base@detail@python@boost@@QEBA?AVlist@34@XZ) dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_Keys referenced in function "public: class boost::python::list __cdecl boost::python::detail::dict_base::keys(void)const " (?keys@dict_base@detail@python@boost@@QEBA?AVlist@34@XZ) dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_Update referenced in function "public: void __cdecl boost::python::detail::dict_base::update(class boost::python::api::object const &)" (?update@dict_base@detail@python@boost@@QEAAXAEBVobject@api@34@@Z) dict.obj : error LNK2019: unresolved external symbol __imp_PyDict_Values referenced in function "public: class boost::python::list __cdecl boost::python::detail::dict_base::values(void)const " (?values@dict_base@detail@python@boost@@QEBA?AVlist@34@XZ) tuple.obj : error LNK2001: unresolved external symbol __imp_PyTuple_Type pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyTuple_Type function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyTuple_New tuple.obj : error LNK2019: unresolved external symbol __imp_PyTuple_New referenced in function "protected: __cdecl boost::python::detail::tuple_base::tuple_base(void)" (??0tuple_base@detail@python@boost@@IEAA@XZ) enum.obj : error LNK2001: unresolved external symbol __imp_PyTuple_New class.obj : error LNK2001: unresolved external symbol __imp_PyTuple_New function.obj : error LNK2001: unresolved external symbol __imp_PyTuple_New str.obj : error LNK2001: unresolved external symbol __imp_PyString_Type builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyString_Type str.obj : error LNK2019: unresolved external symbol __imp_PyString_FromString referenced in function "protected: __cdecl boost::python::detail::str_base::str_base(void)" (??0str_base@detail@python@boost@@IEAA@XZ) builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyString_FromString str.obj : error LNK2019: unresolved external symbol __imp_PyObject_CallMethod referenced in function "public: class boost::python::str __cdecl boost::python::detail::str_base::capitalize(void)const " (?capitalize@str_base@detail@python@boost@@QEBA?AVstr@34@XZ) slice.obj : error LNK2019: unresolved external symbol __imp_PySlice_New referenced in function "protected: __cdecl boost::python::detail::slice_base::slice_base(struct _object *,struct _object *,struct _object *)" (??0slice_base@detail@python@boost@@IEAA@PEAU_object@@00@Z) object_protocol.obj : error LNK2001: unresolved external symbol __imp_PySlice_New pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetObject iterator.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetObject from_python.obj : error LNK2019: unresolved external symbol __imp_PyErr_SetObject referenced in function "void * __cdecl boost::python::converter::rvalue_from_python_stage2(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data &,struct boost::python::converter::registration const &)" (?rvalue_from_python_stage2@converter@python@boost@@YAPEAXPEAU_object@@AEAUrvalue_from_python_stage1_data@123@AEBUregistration@123@@Z) registry.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetObject class.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetObject function.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetObject from_python.obj : error LNK2001: unresolved external symbol __imp_PyExc_TypeError registry.obj : error LNK2019: unresolved external symbol __imp_PyExc_TypeError referenced in function "public: struct _typeobject const * __cdecl boost::python::converter::registration::expected_from_python_type(void)const " (?expected_from_python_type@registration@converter@python@boost@@QEBAPEBU_typeobject@@XZ) class.obj : error LNK2001: unresolved external symbol __imp_PyExc_TypeError function.obj : error LNK2001: unresolved external symbol __imp_PyExc_TypeError from_python.obj : error LNK2019: unresolved external symbol __imp_PyString_FromFormat referenced in function "void * __cdecl boost::python::converter::rvalue_from_python_stage2(struct _object *,struct boost::python::converter::rvalue_from_python_stage1_data &,struct boost::python::converter::registration const &)" (?rvalue_from_python_stage2@converter@python@boost@@YAPEAXPEAU_object@@AEAUrvalue_from_python_stage1_data@123@AEBUregistration@123@@Z) registry.obj : error LNK2001: unresolved external symbol __imp_PyString_FromFormat enum.obj : error LNK2001: unresolved external symbol __imp_PyString_FromFormat from_python.obj : error LNK2001: unresolved external symbol __imp_PyExc_ReferenceError registry.obj : error LNK2019: unresolved external symbol __imp_PyErr_WarnEx referenced in function "void __cdecl boost::python::converter::registry::insert(struct _object * (__cdecl*)(void const *),struct boost::python::type_info,struct _typeobject const * (__cdecl*)(void))" (?insert@registry@converter@python@boost@@YAXP6APEAU_object@@PEBX@ZUtype_info@34@P6APEBU_typeobject@@XZ@Z) enum.obj : error LNK2019: unresolved external symbol __imp_PyString_AsString referenced in function enum_repr builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyString_AsString enum.obj : error LNK2001: unresolved external symbol __imp_PyInt_Type builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyInt_Type enum.obj : error LNK2019: unresolved external symbol __imp_PyType_Ready referenced in function "class boost::python::api::object __cdecl boost::python::objects::`anonymous namespace'::new_enum_type(char const *,char const *)" (?new_enum_type@?A0x1830f653@objects@python@boost@@YA?AVobject@api@34@PEBD0@Z) class.obj : error LNK2001: unresolved external symbol __imp_PyType_Ready function.obj : error LNK2001: unresolved external symbol __imp_PyType_Ready life_support.obj : error LNK2001: unresolved external symbol __imp_PyType_Ready enum.obj : error LNK2001: unresolved external symbol __imp_PyType_Type class.obj : error LNK2001: unresolved external symbol __imp_PyType_Type function.obj : error LNK2001: unresolved external symbol __imp_PyType_Type life_support.obj : error LNK2001: unresolved external symbol __imp_PyType_Type function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyObject_Size enum.obj : error LNK2019: unresolved external symbol __imp_PyObject_Size referenced in function "__int64 __cdecl boost::python::len(class boost::python::api::object const &)" (?len@python@boost@@YA_JAEBVobject@api@12@@Z) function.obj : error LNK2001: unresolved external symbol __imp_PyObject_Size pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyObject_Size builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyObject_Size builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsTrue function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsTrue enum.obj : error LNK2019: unresolved external symbol __imp_PyObject_IsTrue referenced in function "public: __cdecl boost::python::api::object_operators<class boost::python::api::object>::operator struct _object * (__cdecl boost::python::api::object::*)(void)const (void)const " (??B?$object_operators@Vobject@api@python@boost@@@api@python@boost@@QEBAP8object@123@EBAPEAU_object@@XZXZ) class.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsTrue function.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsTrue pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyObject_IsTrue enum.obj : error LNK2019: unresolved external symbol __imp_PyLong_FromUnsignedLong referenced in function "public: __cdecl boost::python::converter::arg_to_python<unsigned int>::arg_to_python<unsigned int>(unsigned int const &)" (??0?$arg_to_python@I@converter@python@boost@@QEAA@AEBI@Z) function.obj : error LNK2001: unresolved external symbol __imp_PyLong_FromUnsignedLong function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyLong_FromUnsignedLong class.obj : error LNK2019: unresolved external symbol __imp_PyArg_ParseTupleAndKeywords referenced in function property_init builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetString class.obj : error LNK2019: unresolved external symbol __imp_PyErr_SetString referenced in function static_data_descr_set function.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetString pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetString errors.obj : error LNK2001: unresolved external symbol __imp_PyErr_SetString class.obj : error LNK2001: unresolved external symbol __imp_PyExc_AttributeError object_protocol.obj : error LNK2001: unresolved external symbol __imp_PyExc_AttributeError class.obj : error LNK2001: unresolved external symbol __imp_PyProperty_Type class.obj : error LNK2019: unresolved external symbol __imp_PyObject_ClearWeakRefs referenced in function instance_dealloc class.obj : error LNK2001: unresolved external symbol __imp_PyBaseObject_Type class.obj : error LNK2001: unresolved external symbol __imp_PyModule_Type class.obj : error LNK2001: unresolved external symbol __imp_PyExc_RuntimeError function.obj : error LNK2019: unresolved external symbol __imp_PyExc_RuntimeError referenced in function "public: __cdecl boost::python::objects::function::function(struct boost::python::objects::py_function const &,struct boost::python::detail::keyword const *,unsigned int)" (??0function@objects@python@boost@@QEAA@AEBUpy_function@123@PEBUkeyword@detail@23@I@Z) pickle_support.obj : error LNK2001: unresolved external symbol __imp_PyExc_RuntimeError errors.obj : error LNK2001: unresolved external symbol __imp_PyExc_RuntimeError class.obj : error LNK2019: unresolved external symbol __imp_PyType_IsSubtype referenced in function "class boost::python::api::object __cdecl boost::python::objects::`anonymous namespace'::new_class(char const *,unsigned __int64,struct boost::python::type_info const * const,char const *)" (?new_class@?A0x6362b66d@objects@python@boost@@YA?AVobject@api@34@PEBD_KQEBUtype_info@34@0@Z) builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyType_IsSubtype class.obj : error LNK2019: unresolved external symbol __imp_PyObject_SetAttrString referenced in function "protected: void __cdecl boost::python::objects::class_base::setattr(char const *,class boost::python::api::object const &)" (?setattr@class_base@objects@python@boost@@IEAAXPEBDAEBVobject@api@34@@Z) object_protocol.obj : error LNK2001: unresolved external symbol __imp_PyObject_SetAttrString class.obj : error LNK2019: unresolved external symbol __imp_PyCFunction_NewEx referenced in function "protected: void __cdecl boost::python::objects::class_base::def_no_init(void)" (?def_no_init@class_base@objects@python@boost@@IEAAXXZ) class.obj : error LNK2019: unresolved external symbol __imp_PyStaticMethod_New referenced in function "protected: void __cdecl boost::python::objects::class_base::make_method_static(char const *)" (?make_method_static@class_base@objects@python@boost@@IEAAXPEBD@Z) class.obj : error LNK2019: unresolved external symbol __imp_PyMem_Malloc referenced in function "public: static void * __cdecl boost::python::instance_holder::allocate(struct _object *,unsigned __int64,unsigned __int64)" (?allocate@instance_holder@python@boost@@SAPEAXPEAU_object@@_K1@Z) class.obj : error LNK2019: unresolved external symbol __imp_PyMem_Free referenced in function "public: static void __cdecl boost::python::instance_holder::deallocate(struct _object *,void *)" (?deallocate@instance_holder@python@boost@@SAXPEAU_object@@PEAX@Z) class.obj : error LNK2019: unresolved external symbol __imp_PyLong_FromUnsignedLongLong referenced in function "public: __cdecl boost::python::converter::arg_to_python<unsigned __int64>::arg_to_python<unsigned __int64>(unsigned __int64 const &)" (??0?$arg_to_python@_K@converter@python@boost@@QEAA@AEB_K@Z) function_doc_signature.obj : error LNK2001: unresolved external symbol __imp_PyLong_FromUnsignedLongLong class.obj : error LNK2019: unresolved external symbol __imp__PyType_Lookup referenced in function class_setattro class.obj : error LNK2019: unresolved external symbol __imp_PyType_GenericAlloc referenced in function "void __cdecl boost::python::objects::`dynamic initializer for 'class_type_object''(void)" (??__Eclass_type_object@objects@python@boost@@YAXXZ) function.obj : error LNK2019: unresolved external symbol __imp_PyTuple_Size referenced in function "public: struct _object * __cdecl boost::python::objects::function::call(struct _object *,struct _object *)const " (?call@function@objects@python@boost@@QEBAPEAU_object@@PEAU5@0@Z) function.obj : error LNK2019: unresolved external symbol __imp_PyDict_Size referenced in function "public: struct _object * __cdecl boost::python::objects::function::call(struct _object *,struct _object *)const " (?call@function@objects@python@boost@@QEBAPEAU_object@@PEAU5@0@Z) function.obj : error LNK2019: unresolved external symbol __imp_PyTuple_GetItem referenced in function "private: void __cdecl boost::python::objects::function::argument_error(struct _object *,struct _object *)const " (?argument_error@function@objects@python@boost@@AEBAXPEAU_object@@0@Z) function.obj : error LNK2019: unresolved external symbol __imp_PyErr_NewException referenced in function "private: void __cdecl boost::python::objects::function::argument_error(struct _object *,struct _object *)const " (?argument_error@function@objects@python@boost@@AEBAXPEAU_object@@0@Z) function.obj : error LNK2001: unresolved external symbol __imp__Py_NotImplementedStruct function.obj : error LNK2019: unresolved external symbol __imp_PyObject_SetAttr referenced in function "public: static void __cdecl boost::python::objects::function::add_to_namespace(class boost::python::api::object const &,char const *,class boost::python::api::object const &,char const *)" (?add_to_namespace@function@objects@python@boost@@SAXAEBVobject@api@34@PEBD01@Z) object_protocol.obj : error LNK2001: unresolved external symbol __imp_PyObject_SetAttr function.obj : error LNK2001: unresolved external symbol __imp_PyStaticMethod_Type function.obj : error LNK2019: unresolved external symbol __imp_PyObject_GetItem referenced in function "public: static void __cdecl boost::python::objects::function::add_to_namespace(class boost::python::api::object const &,char const *,class boost::python::api::object const &,char const *)" (?add_to_namespace@function@objects@python@boost@@SAXAEBVobject@api@34@PEBD01@Z) object_protocol.obj : error LNK2001: unresolved external symbol __imp_PyObject_GetItem function.obj : error LNK2001: unresolved external symbol __imp_PyClass_Type function.obj : error LNK2019: unresolved external symbol __imp_PyMethod_New referenced in function function_descr_get function.obj : error LNK2019: unresolved external symbol __imp_PyString_InternFromString referenced in function function_get_name function.obj : error LNK2001: unresolved external symbol __imp_PyCFunction_Type life_support.obj : error LNK2019: unresolved external symbol __imp_PyWeakref_NewRef referenced in function "struct _object * __cdecl boost::python::objects::make_nurse_and_patient(struct _object *,struct _object *)" (?make_nurse_and_patient@objects@python@boost@@YAPEAU_object@@PEAU4@0@Z) life_support.obj : error LNK2019: unresolved external symbol __imp__PyObject_New referenced in function "struct _object * __cdecl boost::python::objects::make_nurse_and_patient(struct _object *,struct _object *)" (?make_nurse_and_patient@objects@python@boost@@YAPEAU_object@@PEAU4@0@Z) errors.obj : error LNK2001: unresolved external symbol __imp_PyExc_ValueError errors.obj : error LNK2001: unresolved external symbol __imp_PyExc_IndexError errors.obj : error LNK2001: unresolved external symbol __imp_PyExc_OverflowError builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyExc_OverflowError errors.obj : error LNK2019: unresolved external symbol __imp_PyErr_NoMemory referenced in function "int `bool __cdecl boost::python::handle_exception_impl(class python::function0<void>)'::`1'::catch$1" (?catch$1@?0??handle_exception_impl@python@boost@@YA_NV?$function0@X@2@@Z@4HA) module.obj : error LNK2019: unresolved external symbol __imp_Py_InitModule4_64 referenced in function "struct _object * __cdecl boost::python::detail::init_module(char const *,void (__cdecl*)(void))" (?init_module@detail@python@boost@@YAPEAU_object@@PEBDP6AXXZ@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyUnicodeUCS2_FromEncodedObject referenced in function encode_string_unaryfunc builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyBool_Type builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyFloat_Type builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyComplex_Type builtin_converters.obj : error LNK2001: unresolved external symbol __imp_PyUnicode_Type builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyLong_AsLongLong referenced in function "public: static __int64 __cdecl boost::python::converter::`anonymous namespace'::long_long_rvalue_from_python::extract(struct _object *)" (?extract@long_long_rvalue_from_python@?A0x6871ea00@converter@python@boost@@SA_JPEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyLong_AsUnsignedLongLong referenced in function "public: static unsigned __int64 __cdecl boost::python::converter::`anonymous namespace'::unsigned_long_long_rvalue_from_python::extract(struct _object *)" (?extract@unsigned_long_long_rvalue_from_python@?A0x6871ea00@converter@python@boost@@SA_KPEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyComplex_RealAsDouble referenced in function "public: static class std::complex<double> __cdecl boost::python::converter::`anonymous namespace'::complex_rvalue_from_python::extract(struct _object *)" (?extract@complex_rvalue_from_python@?A0x6871ea00@converter@python@boost@@SA?AV?$complex@N@std@@PEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyComplex_ImagAsDouble referenced in function "public: static class std::complex<double> __cdecl boost::python::converter::`anonymous namespace'::complex_rvalue_from_python::extract(struct _object *)" (?extract@complex_rvalue_from_python@?A0x6871ea00@converter@python@boost@@SA?AV?$complex@N@std@@PEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyUnicodeUCS2_AsWideChar referenced in function "public: static class std::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> > __cdecl boost::python::converter::`anonymous namespace'::wstring_rvalue_from_python::extract(struct _object *)" (?extract@wstring_rvalue_from_python@?A0x6871ea00@converter@python@boost@@SA?AV?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@PEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyString_Size referenced in function "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl boost::python::converter::`anonymous namespace'::string_rvalue_from_python::extract(struct _object *)" (?extract@string_rvalue_from_python@?A0x6871ea00@converter@python@boost@@SA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyLong_AsUnsignedLong referenced in function "public: static unsigned char __cdecl boost::python::converter::`anonymous namespace'::unsigned_int_rvalue_from_python<unsigned char>::extract(struct _object *)" (?extract@?$unsigned_int_rvalue_from_python@E@?A0x6871ea00@converter@python@boost@@SAEPEAU_object@@@Z) builtin_converters.obj : error LNK2019: unresolved external symbol __imp_PyUnicodeUCS2_AsUTF8String referenced in function "void __cdecl boost::python::converter::`anonymous namespace'::`dynamic initializer for 'py_unicode_as_string_unaryfunc''(void)" (??__Epy_unicode_as_string_unaryfunc@?A0x6871ea00@converter@python@boost@@YAXXZ) iterator.obj : error LNK2001: unresolved external symbol __imp_PyExc_StopIteration stl_iterator.obj : error LNK2019: unresolved external symbol __imp_PyIter_Next referenced in function "public: void __cdecl boost::python::objects::stl_input_iterator_impl::increment(void)" (?increment@stl_input_iterator_impl@objects@python@boost@@QEAAXXZ) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PyObject_GetAttr referenced in function "class boost::python::api::object __cdecl boost::python::api::getattr(class boost::python::api::object const &,class boost::python::api::object const &)" (?getattr@api@python@boost@@YA?AVobject@123@AEBV4123@0@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PyErr_ExceptionMatches referenced in function "class boost::python::api::object __cdecl boost::python::api::getattr(class boost::python::api::object const &,class boost::python::api::object const &,class boost::python::api::object const &)" (?getattr@api@python@boost@@YA?AVobject@123@AEBV4123@00@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PyObject_SetItem referenced in function "void __cdecl boost::python::api::setitem(class boost::python::api::object const &,class boost::python::api::object const &,class boost::python::api::object const &)" (?setitem@api@python@boost@@YAXAEBVobject@123@00@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PyObject_DelItem referenced in function "void __cdecl boost::python::api::delitem(class boost::python::api::object const &,class boost::python::api::object const &)" (?delitem@api@python@boost@@YAXAEBVobject@123@0@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PySequence_GetSlice referenced in function "struct _object * __cdecl boost::python::api::`anonymous namespace'::apply_slice(struct _object *,struct _object *,struct _object *)" (?apply_slice@?A0xefa54624@api@python@boost@@YAPEAU_object@@PEAU5@00@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp__PyEval_SliceIndex referenced in function "struct _object * __cdecl boost::python::api::`anonymous namespace'::apply_slice(struct _object *,struct _object *,struct _object *)" (?apply_slice@?A0xefa54624@api@python@boost@@YAPEAU_object@@PEAU5@00@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PySequence_SetSlice referenced in function "int __cdecl boost::python::api::`anonymous namespace'::assign_slice(struct _object *,struct _object *,struct _object *,struct _object *)" (?assign_slice@?A0xefa54624@api@python@boost@@YAHPEAU_object@@000@Z) object_protocol.obj : error LNK2019: unresolved external symbol __imp_PySequence_DelSlice referenced in function "int __cdecl boost::python::api::`anonymous namespace'::assign_slice(struct _object *,struct _object *,struct _object *,struct _object *)" (?assign_slice@?A0xefa54624@api@python@boost@@YAHPEAU_object@@000@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyObject_RichCompare referenced in function "class boost::python::api::object __cdecl boost::python::api::operator>(class boost::python::api::object const &,class boost::python::api::object const &)" (??Oapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Add referenced in function "class boost::python::api::object __cdecl boost::python::api::operator+(class boost::python::api::object const &,class boost::python::api::object const &)" (??Hapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Subtract referenced in function "class boost::python::api::object __cdecl boost::python::api::operator-(class boost::python::api::object const &,class boost::python::api::object const &)" (??Gapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Multiply referenced in function "class boost::python::api::object __cdecl boost::python::api::operator*(class boost::python::api::object const &,class boost::python::api::object const &)" (??Dapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Divide referenced in function "class boost::python::api::object __cdecl boost::python::api::operator/(class boost::python::api::object const &,class boost::python::api::object const &)" (??Kapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Remainder referenced in function "class boost::python::api::object __cdecl boost::python::api::operator%(class boost::python::api::object const &,class boost::python::api::object const &)" (??Lapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Lshift referenced in function "class boost::python::api::object __cdecl boost::python::api::operator<<(class boost::python::api::object const &,class boost::python::api::object const &)" (??6api@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Rshift referenced in function "class boost::python::api::object __cdecl boost::python::api::operator>>(class boost::python::api::object const &,class boost::python::api::object const &)" (??5api@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_And referenced in function "class boost::python::api::object __cdecl boost::python::api::operator&(class boost::python::api::object const &,class boost::python::api::object const &)" (??Iapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Xor referenced in function "class boost::python::api::object __cdecl boost::python::api::operator^(class boost::python::api::object const &,class boost::python::api::object const &)" (??Tapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_Or referenced in function "class boost::python::api::object __cdecl boost::python::api::operator|(class boost::python::api::object const &,class boost::python::api::object const &)" (??Uapi@python@boost@@YA?AVobject@012@AEBV3012@0@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceAdd referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator+=(class boost::python::api::object &,class boost::python::api::object const &)" (??Yapi@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceSubtract referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator-=(class boost::python::api::object &,class boost::python::api::object const &)" (??Zapi@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceMultiply referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator*=(class boost::python::api::object &,class boost::python::api::object const &)" (??Xapi@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceDivide referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator/=(class boost::python::api::object &,class boost::python::api::object const &)" (??_0api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceRemainder referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator%=(class boost::python::api::object &,class boost::python::api::object const &)" (??_1api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceLshift referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator<<=(class boost::python::api::object &,class boost::python::api::object const &)" (??_3api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceRshift referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator>>=(class boost::python::api::object &,class boost::python::api::object const &)" (??_2api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceAnd referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator&=(class boost::python::api::object &,class boost::python::api::object const &)" (??_4api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceXor referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator^=(class boost::python::api::object &,class boost::python::api::object const &)" (??_6api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) object_operators.obj : error LNK2019: unresolved external symbol __imp_PyNumber_InPlaceOr referenced in function "class boost::python::api::object & __cdecl boost::python::api::operator|=(class boost::python::api::object &,class boost::python::api::object const &)" (??_5api@python@boost@@YAAEAVobject@012@AEAV3012@AEBV3012@@Z) wrapper.obj : error LNK2019: unresolved external symbol __imp_PyDict_GetItemString referenced in function "protected: class boost::python::override __cdecl boost::python::detail::wrapper_base::get_override(char const *,struct _typeobject *)const " (?get_override@wrapper_base@detail@python@boost@@IEBA?AVoverride@34@PEBDPEAU_typeobject@@@Z) wrapper.obj : error LNK2001: unresolved external symbol __imp_PyMethod_Type import.obj : error LNK2019: unresolved external symbol __imp_PyImport_ImportModule referenced in function "class boost::python::api::object __cdecl boost::python::import(class boost::python::str)" (?import@python@boost@@YA?AVobject@api@12@Vstr@12@@Z) exec.obj : error LNK2019: unresolved external symbol __imp_PyRun_StringFlags referenced in function "class boost::python::api::object __cdecl boost::python::eval(class boost::python::str,class boost::python::api::object,class boost::python::api::object)" (?eval@python@boost@@YA?AVobject@api@12@Vstr@12@V3412@1@Z) exec.obj : error LNK2019: unresolved external symbol __imp_PyEval_GetGlobals referenced in function "class boost::python::api::object __cdecl boost::python::eval(class boost::python::str,class boost::python::api::object,class boost::python::api::object)" (?eval@python@boost@@YA?AVobject@api@12@Vstr@12@V3412@1@Z) exec.obj : error LNK2019: unresolved external symbol __imp_PyRun_FileExFlags referenced in function "class boost::python::api::object __cdecl boost::python::exec_file(class boost::python::str,class boost::python::api::object,class boost::python::api::object)" (?exec_file@python@boost@@YA?AVobject@api@12@Vstr@12@V3412@1@Z) exec.obj : error LNK2019: unresolved external symbol __imp_PyFile_AsFile referenced in function "class boost::python::api::object __cdecl boost::python::exec_file(class boost::python::str,class boost::python::api::object,class boost::python::api::object)" (?exec_file@python@boost@@YA?AVobject@api@12@Vstr@12@V3412@1@Z) exec.obj : error LNK2019: unresolved external symbol __imp_PyFile_FromString referenced in function "class boost::python::api::object __cdecl boost::python::exec_file(class boost::python::str,class boost::python::api::object,class boost::python::api::object)" (?exec_file@python@boost@@YA?AVobject@api@12@Vstr@12@V3412@1@Z) bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.dll : fatal error LNK1120: 138 unresolved externals call "C:\Program Files\Microsoft Visual Studio 8\VC\vcvarsall.bat" x86_amd64 >nul link /NOLOGO /INCREMENTAL:NO /DLL /DEBUG /MACHINE:X64 /subsystem:console /out:"bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.dll" /IMPLIB:"bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.lib" /LIBPATH:"C:\Python26\libs" @"bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.dll.rsp" if %ERRORLEVEL% NEQ 0 EXIT %ERRORLEVEL% ...failed msvc.link.dll bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.dll bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.lib bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.pdb... ...removing bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.lib ...removing bin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi\boost_python-vc80-mt-gd-1_41.pdb ...skipped <pstage\lib>boost_python-vc80-mt-gd-1_41.dll for lack of <pbin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi>boost_python-vc80-mt-gd-1_41.dll... ...skipped <pstage\lib>boost_python-vc80-mt-gd-1_41.lib for lack of <pbin.v2\libs\python\build\msvc-8.0\debug\address-model-64\threading-multi>boost_python-vc80-mt-gd-1_41.lib... ...skipped <pstage\lib>boost_python-vc80-mt-gd.lib for lack of <pstage\lib>boost_python-vc80-mt-gd-1_41.lib... ...failed updating 3 targets... ...skipped 3 targets...

2 1

[asio]crash when acess boost::system::error_code err.message()
by victor 13 Jan '10

13 Jan '10

hello, I use boost1.40.0 on linux2.6/gcc4.1.2. when my process execute code as flow, my process crash.: void CSapConnection::HandleWrite(const boost::system::error_code& err) { std::cout<<"error:" <<err.message()<<"\n"; } This coredump information: Program terminated with signal 11, Segmentation fault. #0 0x080c7c83 in boost::system::error_code::message (this=0xb6bf0f64) at /usr/local/boost_1_40_0/boost/system/error_code.hpp:347 347 std::string message() const { return m_cat->message(value()); } (gdb) p this $1 = (const boost::system::error_code * const) 0xb6bf0f64 (gdb) p *this $2 = {m_val = 136236300, m_cat = 0xd56658} (gdb) p *m_cat $3 = {<boost::noncopyable_::noncopyable> = {<No data fields>}, _vptr.error_category = 0x0} Is this a bug of asio??

1 1

Boost-users] [asio]about reactor_op_queue dead loop
by victor 13 Jan '10

13 Jan '10

I call boost::asio::async_write, finally it call "bool enqueue_operation(Descriptor descriptor, Operation operation)" In this function , there is code as flow: while (current_op->next_) current_op = current_op->next_; My process execute it for ever. Using gdb to attach the prcocess, I find : 68 while (current_op->next_) (gdb) p current_op $8 = (class boost::asio::detail::reactor_op_queue<int>::op_base *) 0x93381c8 (gdb) p current_op->next_ $9 = (class boost::asio::detail::reactor_op_queue<int>::op_base *) 0x93381c8 current_op and current_op->next_ is the same address. how did it come true? I have no any clue. Anyone can offer some suggestion?

1 1

Newbie question: Serialization of an Array2D --> Cell** m_cells
by Simon Ruffieux 13 Jan '10

13 Jan '10

Hello ! I am trying to serialize a a complex structure. One of the "variable" is a 2D Array (Cell** m_cells ) declared with pointers. I need to keep this data structure as it is. I have read some stuff about multi array with boost but found nothing to serialize my Cell** m_cells. Maybe one of you has the solution .... Note1: using boost 1.41.0, g++ and ubuntu 9.04 .... Note2: As you may understand while reading the code, I have in fact an Array2D of PointAccumulator .... (Cell = PointAccumulator) The part of code that is not correct ..... * template <class Archive> void serialize(Archive& ar, const unsigned int version){ *ar & m_xsize & m_ysize &* m_cells; }* And raising this error: wheelchair@wheelchair-laptop:~/playerstage/boostTest$ g++ -I/usr/local/include/ -L/usr/local/lib/ simple2.cpp -o simple -lboost_serialization /usr/local/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = PointAccumulator*]’: /usr/local/include/boost/serialization/serialization.hpp:74: instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = PointAccumulator*]’ /usr/local/include/boost/serialization/serialization.hpp:133: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = PointAccumulator*]’ /usr/local/include/boost/archive/detail/iserializer.hpp:173: instantiated from ‘void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::text_iarchive, T = PointAccumulator*]’ simple2.cpp:186: instantiated from here /usr/local/include/boost/serialization/access.hpp:109: error: request for member ‘serialize’ in ‘t’, which is of non-class type ‘PointAccumulator*’ /usr/local/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = PointAccumulator*]’: /usr/local/include/boost/serialization/serialization.hpp:74: instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = PointAccumulator*]’ /usr/local/include/boost/serialization/serialization.hpp:133: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = PointAccumulator*]’ /usr/local/include/boost/archive/detail/oserializer.hpp:139: instantiated from ‘void boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::archive::text_oarchive, T = PointAccumulator*]’ simple2.cpp:186: instantiated from here /usr/local/include/boost/serialization/access.hpp:109: error: request for member ‘serialize’ in ‘t’, which is of non-class type ‘PointAccumulator*’ Here is the code I use for my tests: #include <iostream> #include <iterator> #include <algorithm> #include <sstream> #include <fstream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> using namespace std; using namespace boost::archive; using namespace boost::serialization; /* * point * */ template <class T> struct point{ inline point():x(0),y(0) {} inline point(T _x, T _y):x(_x),y(_y){} T x, y; friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & x & y; } }; /* * PointAccumulator * */ struct PointAccumulator{ typedef point<float> FloatPoint; PointAccumulator(): acc(0,0), n(0), visits(0){} PointAccumulator(int i): acc(0,0), n(0), visits(0){assert(i==-1);} static PointAccumulator* unknown_ptr; FloatPoint acc; int n, visits; friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & n & visits & acc; } }; /* * Array2D * */ template<class Cell, const bool debug=false> class Array2D{ public: Array2D(int xsize=0, int ysize=0); Array2D& operator=(const Array2D &); Array2D(const Array2D<Cell,debug> &); //~Array2D(); inline Cell& cell(int x, int y); inline void print(){ cout << "Displaying array2D (x,y) --> (" << m_xsize << "," << m_ysize << ")" << endl; for(int i=0;i<m_xsize;i++){ for(int j=0;j<m_ysize;j++){ cout << cell(i,j).acc.x << " "; } cout<<endl; } } Cell ** m_cells; protected: int m_xsize, m_ysize; friend class boost::serialization::access; * template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & m_xsize & m_ysize & m_cells; }* }; template <class Cell, const bool debug> Array2D<Cell,debug> & Array2D<Cell,debug>::operator=(const Array2D<Cell,debug> & g){ if (debug || m_xsize!=g.m_xsize || m_ysize!=g.m_ysize){ for (int i=0; i<m_xsize; i++) delete [] m_cells[i]; delete [] m_cells; m_xsize=g.m_xsize; m_ysize=g.m_ysize; m_cells=new Cell*[m_xsize]; for (int i=0; i<m_xsize; i++) m_cells[i]=new Cell[m_ysize]; } for (int x=0; x<m_xsize; x++) for (int y=0; y<m_ysize; y++) m_cells[x][y]=g.m_cells[x][y]; if (debug){ std::cerr << __PRETTY_FUNCTION__ << std::endl; std::cerr << "m_xsize= " << m_xsize<< std::endl; std::cerr << "m_ysize= " << m_ysize<< std::endl; } return *this; } template <class Cell, const bool debug> Array2D<Cell,debug>::Array2D(int xsize, int ysize){ // assert(xsize>0); // assert(ysize>0); m_xsize=xsize; m_ysize=ysize; if (m_xsize>0 && m_ysize>0){ m_cells=new Cell*[m_xsize]; for (int i=0; i<m_xsize; i++) m_cells[i]=new Cell[m_ysize]; } else{ m_xsize=m_ysize=0; m_cells=0; } if (debug){ std::cerr << __PRETTY_FUNCTION__ << std::endl; std::cerr << "m_xsize= " << m_xsize<< std::endl; std::cerr << "m_ysize= " << m_ysize<< std::endl; } } template <class Cell, const bool debug> inline Cell& Array2D<Cell,debug>::cell(int x, int y){ return m_cells[x][y]; } template <class Cell, const bool debug> Array2D<Cell,debug>::Array2D(const Array2D<Cell,debug> & g){ m_xsize=g.m_xsize; m_ysize=g.m_ysize; m_cells=new Cell*[m_xsize]; for (int x=0; x<m_xsize; x++){ m_cells[x]=new Cell[m_ysize]; for (int y=0; y<m_ysize; y++) m_cells[x][y]=g.m_cells[x][y]; } if (debug){ std::cerr << __PRETTY_FUNCTION__ << std::endl; std::cerr << "m_xsize= " << m_xsize<< std::endl; std::cerr << "m_ysize= " << m_ysize<< std::endl; } } /* * SaveToFile and LoadFromFile * */ template <class A> void saveIntoFile(Array2D<PointAccumulator,false>& array, const char* file){ ofstream ofile(file); A ar(ofile); ar << array; ofile.close(); } template <class A> Array2D<PointAccumulator,false> loadFromFile(const char* file){ ifstream ifile(file); A ar(ifile); Array2D<PointAccumulator,false> array; ar >> array; ifile.close(); return array; } /* * MAIN * */ int main(){ Array2D<PointAccumulator,false> myArr = Array2D<PointAccumulator,false>(2,2); myArr.cell(0,0).acc.x = 1; myArr.cell(1,0).acc.x = 2; myArr.cell(0,1).acc.x = 1.1; myArr.cell(1,1).acc.x = 2.2; myArr.print(); saveIntoFile<text_oarchive>(myArr,"out.txt"); Array2D<PointAccumulator,false> myArr2 = loadFromFile<text_iarchive>("out.txt"); myArr2.print(); } Thanks for the help !

2 2

newbie question --> invalid application of ?sizeof? to incomplete type ?boost::STATIC_ASSERTION_FAILURE<false>?
by Simon Ruffieux 13 Jan '10

13 Jan '10

Hello ! I am a newbie to Boost ... and trying to use it in order to serialize a complex data structure for one of my project. (the struct particle) You can see the nested data structure at the end of this file. I have started from the 'leafs' and yet trying to serialize a point which is a variable of a PointAccumulator. You can see the point.h file below. Here is the test code I am using to try to serialize it. Note that I read a few succinct tutorials and already succesfully compiled some simple examples. ... GMapping::point<int>p = GMapping::point<int>(); //saveIntoFile<text_oarchive>(particlesSaved[1].map.cell(1,1).acc, "outTest.txt"); saveIntoFile<text_oarchive>(p, "outTest.txt"); ... template <class T> void RobotController::saveIntoFile(GMapping::point<int>& p, const char* file){ std::ofstream ofile(file); T ar(ofile); ar << p; ofile.close(); } However when compiling; it raises the following error: ... /usr/include/boost/archive/detail/oserializer.hpp: In function ‘void boost::archive::save(Archive&, T&) [with Archive = boost::archive::text_oarchive, T = GMapping::point<int>]’: /usr/include/boost/archive/detail/common_oarchive.hpp:64: instantiated from ‘void boost::archive::detail::common_oarchive<Archive>::save_override(T&, int) [with T = GMapping::point<int>, Archive = boost::archive::text_oarchive]’ /usr/include/boost/archive/basic_text_oarchive.hpp:75: instantiated from ‘void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int) [with T = GMapping::point<int>, Archive = boost::archive::text_oarchive]’ /usr/include/boost/archive/detail/interface_oarchive.hpp:64: instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = GMapping::point<int>, Archive = boost::archive::text_oarchive]’ RobotController.cpp:186: instantiated from ‘void RobotController::saveIntoFile(GMapping::point<int>, const char*) [with T = boost::archive::text_oarchive]’ RobotController.cpp:223: instantiated from here /usr/include/boost/archive/detail/oserializer.hpp:564: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’ /usr/include/boost/archive/detail/common_oarchive.hpp:64: instantiated from ‘void boost::archive::detail::common_oarchive<Archive>::save_override(T&, int) [with T = GMapping::point<int>, Archive = boost::archive::text_oarchive]’ /usr/include/boost/archive/basic_text_oarchive.hpp:75: instantiated from ‘void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int) [with T = GMapping::point<int>, Archive = boost::archive::text_oarchive]’ /usr/include/boost/archive/detail/interface_oarchive.hpp:64: instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = GMapping::point<int>, Archive = boost::archive::text_oarchive]’ RobotController.cpp:186: instantiated from ‘void RobotController::saveIntoFile(GMapping::point<int>, const char*) [with T = boost::archive::text_oarchive]’ RobotController.cpp:223: instantiated from here /usr/include/boost/archive/detail/oserializer.hpp:564: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’ make: *** [RobotController.o] Error 1 Anyone understands what is the error ? I read I had to give a constant reference to the object while calling the operator << ... but I don't really understand it. I am using Ubuntu 9.04 / g++ compiler / boost v 1.35 Thanks in advance ! Second quick question I have doubts about: Do you think it is possible to serialize my *Particle* structure ? With all the pointers it contains and the nested structures and the trees (TNode) it points to ... ------------------------------ ----------------------------------------------------------- Data structures *Point.h* #ifndef _POINT_H_ #define _POINT_H_ #include <assert.h> #include <math.h> #include <iostream> #include <sstream> #include <fstream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #define DEBUG_STREAM cerr << __PRETTY_FUNCTION__ << ":" //FIXME using namespace boost::archive; namespace GMapping { template <class T> struct point{ inline point():x(0),y(0) {} inline point(T _x, T _y):x(_x),y(_y){} T x, y; friend class boost::serialization::access; template <class Archive> void serialize(Archive& ar, const unsigned int version){ ar & x & y; } }; ... Structure to serialize (originally, I want to serialize a Particle ...) Struct Particle{ ScanMatcherMap map; OrientedPoint pose; double weight; double weightSum; double gweight; int previousIndex; TNode* node; }; typedef Map<PointAccumulator, HierarchicalArray2D<PointAccumulator>> ScanMatcherMap; template <class Cell, class Storage, const bool isClass=true> class Map{ Point m_center; double m_worldSizeX, m_worldSizeY, m_delta; Storage m_storage; int m_mapSizeX, m_mapSizeY; int m_sizeX2, m_sizeY2; static const Cell m_unknown; }; struct PointAccumulator{ typedef point<float> FloatPoint; PointAccumulator(): acc(0,0), n(0), visits(0){} PointAccumulator(int i): acc(0,0), n(0), visits(0){assert(i==-1);} static PointAccumulator* unknown_ptr; FloatPoint acc; int n, visits; }; template <class Cell> class HierarchicalArray2D: public Array2D<autoptr< Array2D<Cell> > >{ typedef std::set< point<int>, pointcomparator<int> > PointSet; HierarchicalArray2D(int xsize, int ysize, int patchMagnitude=5); PointSet m_activeArea; int m_patchMagnitude; int m_patchSize; }; template<class Cell, const bool debug=false> class Array2D{ Cell ** m_cells; int m_xsize, m_ysize; }; template <class X> class autoptr{ struct reference{ X* data; unsigned int shares; }; reference * m_reference; }; struct TNode{ /**Constructs a node of the trajectory tree. @param pose: the pose of the robot in the trajectory @param weight: the weight of the particle at that point in the trajectory @param accWeight: the cumulative weight of the particle @param parent: the parent node in the tree @param childs: the number of childs */ TNode(const OrientedPoint& pose, double weight, TNode* parent=0, unsigned int childs=0); OrientedPoint pose; double weight; double accWeight; double gweight; TNode* parent; const RangeReading* reading; unsigned int childs; mutable unsigned int visitCounter; mutable bool flag; }; class RangeReading: public SensorReading, public std::vector<double>{ std::vector<Point> cartesianForm(double maxRange=1e6) const; unsigned int activeBeams(double density=0.) const; OrientedPoint m_pose; };

1 1

variadic template function using fusion vector
by noman javed 13 Jan '10

13 Jan '10

Hi I want to write a function like that template<class A, class T0, class T1, ..., class Tn> execute(const A& a, T0& arg0, T1& arg&, .. , Tn& argn) { boost::fusion::vector<T0,...,Tn> vec(arg0, arg1, .., argn); /* rest of the code */ } Can anybody guide me how can I write this function without overloading it with different number of args? Thanks in anticipation Noman Javed

2 1

c++: boost::multi_array - in a class
by Hannan Sadar 13 Jan '10

13 Jan '10

Hi to all, i wrote a class (Influx), where i try to define there a boost::multi_arry occ_sign_change. Once i tried in Influx::Influx to write: occ_sign_change = vec::uint32_1d_t ( boost::extents[ num_elements ] ); i was able to compile, but at run time i got the following error: randum.rc3_64: /usr/include/boost/multi_array/multi_array_ref.hpp:487: boost::multi_array_ref<T, NumDims>& boost::multi_array_ref<T, NumDims>::operator=(const ConstMultiArray&) [with ConstMultiArray = boost::multi_array<unsigned int, 1ul, std::allocator<unsigned int> >, T = unsigned int, long unsigned int NumDims = 1ul]: Assertion `std::equal(other.shape(),other.shape()+this->num_dimensions(), this->shape())' failed. that is why i rewrote the above line as following: vec::uint32_1d_t occ_sign_change ( boost::extents[ num_elements ] ); but now, when i call for the size of occ_sign_change in Influx::Clean, i get that the size is zero. how could i solve this problem? regards #include <boost/random/uniform_01.hpp> #include <boost/random.hpp> #include "randum.rc3.hpp" namespace vec { typedef boost::multi_array< uint32_t , 1> uint32_1d_t; typedef boost::multi_array< uint32_t , 2> uint32_2d_t; typedef boost::multi_array< uint32_t , 3> uint32_3d_t; typedef boost::multi_array< uint32_t , 1> uint32_1d_t; typedef boost::multi_array< uint32_t , 2> uint32_2d_t; typedef boost::multi_array< double , 1> double_1d_t; typedef boost::multi_array< double , 2> double_2d_t; typedef uint32_1d_t::index index_t; } class Influx { public: Influx ( uint32_t num_elements , double p_, double kappa_ , vec::uint32_2d_t *Pointer_ , threshold_t threshold_ , uint32_t num_bits , uint16_t max_runs_ ); void Update (); void Validity ( const uint32_t i ); void Clean( uint32_t run ); boost::dynamic_bitset<> occupied; vec::uint32_1d_t occupied_counter; vec::uint32_1d_t num_neighbours; vec::uint32_1d_t occ_sign_change; private: std::vector< uint32_t > remove_node_v; vec::uint32_2d_t *Pointer; std::vector< uint32_t > num_neighbours_epoch; double p; double kappa; threshold_t threshold; uint16_t max_runs; uint32_t bits_mask; uint32_t complement_num; }; Influx::Influx ( uint32_t num_elements , double p_, double kappa_ , vec::uint32_2d_t *Pointer_ , threshold_t threshold_ , uint32_t num_bits , uint16_t max_runs_ ) { bits_mask = ( 1 << num_bits ) - 1; Pointer = Pointer_; p = p_; kappa = kappa_; threshold = threshold_; max_runs = max_runs_; complement_num = 0; num_neighbours_epoch = std::vector< uint32_t > ( num_elements , 0); occupied = boost::dynamic_bitset<> ( num_elements , 0 ); // all 0's by default vec::uint32_1d_t occupied_counter ( boost::extents[ num_elements ] ); vec::uint32_1d_t occ_sign_change ( boost::extents[ num_elements ] ); vec::uint32_1d_t num_neighbours ( boost::extents[ num_elements ] ); remove_node_v.reserve( num_elements ); std::fill_n( occupied_counter.begin() , occupied_counter.num_elements() , 0 ); std::fill_n( occ_sign_change.begin() , occ_sign_change.num_elements() , 0 ); std::fill_n( num_neighbours.origin() , num_neighbours.num_elements() , 0 ); } void Influx::Clean ( uint32_t run ) { for ( vec::uint32_1d_t::size_type i = 0 ; i < remove_node_v.size() ; i++ ) { occupied[ remove_node_v[i] ] = 0; if ( run >= max_runs ) { std::cout << "size occ_sign_change: " << occ_sign_change.size() << std::endl; occ_sign_change[ remove_node_v[i] ]++; } } remove_node_v.clear(); }

2 1

[iterators][range][rangeex] range concatenation
by Dmitry Vinogradov 12 Jan '10

12 Jan '10

Is it possible with Boost (or RangeEx) to concatenate ranges? Sample usage: template <class Range> void process_range(Range const &); std::vector<foo> v = ...; std::list<foo> l = ...; process_range(concat(v, l));

5 18

[asio] Why are the strands in the "HTTP Server 3" example necessary?
by Tacheon 12 Jan '10

12 Jan '10

In the HTTP Server 3 (http://tinyurl.com/yh95d2b) example of the asio documentation strands are used to synchronize the invocation of completion handlers? But why are they necessary here? As far as I get it, the handlers are invoked in strict sequential order for each distinct connection (http://tinyurl.com/ybohynd) Each connection has its own set of resources so synchronization shouldn't be necessary, should it? Thanks in advance, Boris

5 6

gil and OpenGL
by mailinglist＠squarepx.com 12 Jan '10

12 Jan '10

This is my first post in any mailinglist ever so i hope i am doing this right. I successfully integrated the boost::gil module into my code to load some images and process their content so that I can display it as a texture in OpenGL. My problem right now is the massive performance issue in retrieving the color information from the loaded image. I am looping through every row and column and retrieve the red, green, blue and alpha color with the get_color method and push those values to a char array. So I was wondering what the best approach would be to get the color information from the gil image into OpenGL or at least a char array. Thanks in advance.

5 8

[program_options] linking error with example
by katharina 12 Jan '10

12 Jan '10

Hi, I have problems starting out with the program_options library. Looking at the tutorial, I wanted to try out the first example metioned, first.cpp (which is located in boost_1_41_0/libs/program_options/example). But there seems to be some linking error. I try to compile it by g++ -I ~boost_1_41_0 first.cpp -o first ~/boost_1_41_0/stage/lib/libboost_program_options.a But then I get a strange error: /tmp/ccDB6KSC.o: In function `boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE12extra_parserENS_9function1ISt4pairISsSsERKSsSaINS_13function_baseEEEE[boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)]+0x27): undefined reference to `boost::program_options::detail::cmdline::set_additional_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::allocator<boost::function_base> >)' collect2: ld returned 1 exit status What am I doing wrong? Thanks, Katharina

1 0

[Bjam] Ignore specific library
by Simon Pickles 12 Jan '10

12 Jan '10

Hi, Using Visual Studio, it is possible to 'Ignore Specific Library' (Project Properties>Configuration Properties>Linker>Input>Ignore Specific Library). We have found this a useful feature in a project. Now we want to build the project using bjam, but we need to reproduce that linker behaviour. Is there any ignore <library> feature? Many thanks Simon

3 4

how to make Pool allocate one chunk buffer one time?
by zhangxiaowei 12 Jan '10

12 Jan '10

Hi, all I am doing one video processing software, which uses Boost::pool as the buffer manager. but every time pool allocates buffers, it malloc all needed memory at one time. for example, I create one pool object for 1024 B for one chunk, and 16 chunks at first. Pool malloc all the 1024 * 16 (16KB) at one time. this leads to memory allocation error for my application, because I need 8294400B (1920 * 1080 * 4, for one video frame) * 32, that is more than 256 MB. I use default new/delete, so new returns NULL for the third time in my case. but from memory monitor, there are still enough memory free. after tracing into new, I found this is from the Microsoft memory management design and memory fragments. is there any way to set Pool to allocate one chunk by another? for example, when I want one chunk, it allocates 8294400B. and for another time, it does another. so this should solve my issues for the memory usage. after checking the code of Pool, it is all based on contiguous memory. if pool cannot meet my requirement, is there any other option in BOOST? BTW, I am working on Windows 32 bits with MS Visual Studio 2005. Thank you for any comment. Xiaowei _________________________________________________________________ 上Windows Live 中国首页，下载Messenger2009安全版！ http://www.windowslive.cn

3 2

Re: [Boost-users] Boost release 1.41.0 available
by Tom Kent 11 Jan '10

11 Jan '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've built windows libraries (vc7.1, vc8, vc9) for this version, if you want them, you can get them from my website: http://boost.teeks99.com Usually I'm quicker about this, but I didn't notice that the last release happened until I saw that the next one was coming up :-) Tom > From: Beman Dawes <bdawes <at> acm.org> > Subject: Boost release 1.40.0 is available > Newsgroups: gmane.comp.lib.boost.user > Date: 2009-11-18 13:25:48 > Boost release 1.41.0 is now available. > > This release contains one new library and numerous bug fixes for > existing > libraries. For details, including download links, see > http://www.boost.org/users/news/version_1_41_0 > > The release can also be downloaded directly from SourceForge. See > http://sourceforge.net/projects/boost/files/ > > To install this release on your system, see > http://www.boost.org/doc/libs/1_41_0/more/getting_started/index.html > > Thanks, > > --The Boost release team -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAktLi4wACgkQccZrtZUgfJClsgCeJAfaSk5gVsxi4w9L/cc/EYb5 FqwAn1YA74pBMFUmkhvsHlb8gpMlaP0G =0T+M -----END PGP SIGNATURE-----

1 0

utf8_codecvt_facet
by Patrick Horgan 11 Jan '10

11 Jan '10

utf8_codecvt is in libserialization and in libprogram_options--I thought it was moving to utility? Is there one supported spot? Is there any documentation that talks about what to include and link? The .hpp file is still in boost/detail, boost/archive/detail, boost/program_options,boost_filesystem/src, and libs/iostreams/test/detail. Guess it's not cleaned up yet? Or maybe people didn't want cross dependencies? Anyway I need to either use it or write one;) I'm not doing serialization or program_options (yet, who knows, just starting the project). I also need to be able to be able to deal with UTF-16, I don't suppose there's a codecvt facet for that, huh? Patrick

3 2

Spirit parser includes
by Eloi Du Bois 11 Jan '10

11 Jan '10

Hi, I would like to know which include do I need to use grammar. When using include "boost/spirit.hpp", it says me that it is deprecated... d:\travail\tuttleofx\plugins\lut\src\lutengine\lut_reader.h(37) : error C2039: 'grammar' : n'est pas membre de 'boost::spirit' d:\travail\tuttleofx\plugins\lut\src\lutengine\lut_reader.h(37) : error C2504: 'grammar' : classe de base non définie d:\travail\tuttleofx\plugins\lut\src\lutengine\lut_reader.h(37) : error C2143: erreur de syntaxe : absence de ',' avant '<' d:\travail\tuttleofx\plugins\lut\src\lutengine\lut_reader.h(55) : error C2143: erreur de syntaxe : absence de ';' avant '<'

2 2

Using 'address-model-32_64' on Mac OS 10.6
by Dane Springmeyer 11 Jan '10

11 Jan '10

I've recently upgraded to a Mac with 64bit firmware and Snow Leopard. I've noticed all applications compiled with g++ now default to 64 bit libs (x86_64), including boost. Thanks by the way for the fixes to boost 1.41 that allow successful 3- way arch compilation on osx again! Now I'm trying to just build two- way arches. I'm now trying to compile boost (I happen to be using trunk), and am noticing that passing 'address-model-32_64' does not seem to have the effect I'd expect. If the flag is passed the only affect I notice is that the build directories include it 'address-model-32_64' in the path, but notably the '-arch -i386 -arch x86_64' flags are not properly added to the CXXFLAGS and LINKFLAGS. Therefore the compiled dynamic libraries are still single architecture, x86_64. Passing 'architecture=combined' does prompt these flags, but includes the 'arch ppc' flag as well which I don't want. So, is it a bug that using address-model alone does not work or am I am misunderstanding something? Thanks for any clarification. Cheers, Dane

2 2

Problem iterating over vertices (Property Map!?)
by Pedram Pedarsani 11 Jan '10

11 Jan '10

I am kind of new to C++ and also BGL, so it'll be great if you can help me with this problem! I'm iterating over all the vertices of my graph, and each time I iterate, I want to *mark* a vertex (which has some specific degree for example, or some other property that I can calculate), so as not to iterate over it the next time. I'll do this process until all vertices are marked, so no more iteration. For now, what I'm doing is putting the marked vertices in a separate list, and each time I iterate over all vertices again and I check whether each vertex is in the marked list (which is very inefficient). Could you please help me with an efficient way of doing this? I was thinking to use Property Map but I have no idea how! Any small piece of code will be appreciated. Thanks a lot!

1 0

BGL: shared_ptr as bundled properties > how to generate properties maps ???
by Damien Maupu 11 Jan '10

11 Jan '10

Dear all, I am using bundled properties when I define my graph. The bundled properties are smart pointers to my own class Edge and Vertex. I write something like: typedef boost::shared_ptr<Vertex> VertexPtr; typedef boost::shared_ptr<Edge> EdgePtr; typedef adjacency_list<vecS, vecS, directedS, VertexPtr, EdgePtr> Graph; Vertex and Edge being my own classes to store information on the vertices and the edges. For what I read in the doc, this is the correct, more modern way to do it. My problem is the following. I am trying to use the BGL algorithms and some of them require vertex/edge info to be provide as properties maps. From http://www.boost.org/doc/libs/1_41_0/libs/graph/doc/bundles.html I know it is possible to generate those maps from bundled properties. It works well if I don't use shared_ptr but cannot compile otherwise. When using shared_ptr, similarly to the doc, I wrote: typedef property_map<SearchGraph, float EdgePtr::*>::type WeightMap; WeightMap weightMap = get(&EdgePtr::m_cost, *_graph); m_cost being a public float member of my own class Edge. I have the following compilation error: 'm_cost' : is not a member of 'boost::shared_ptr<T>' Indeed it is not. My question is, I can let the shared_ptr access the member? In other world how to deal with bundled properties / properties maps and shared_ptr. Extra question, could 'm_cost' be a private member of my own class Edge? Thank you very much Sincerely, Damien

3 4

can serialize multi-class into a single Archive?
by pengdw 11 Jan '10

11 Jan '10

I want to serialize multiple class into a single file. that's: class object {}; ofstream ofs; ofs.open("data.txt"); boost::archive::text_oarchive oa(ofs); while (get_next_object(object_t obj)) { oa << obj; } It is ok when I use text_iarchive to read back these objects. Now I want to append some objects to a Archive, I need to reopen the data file "data.txt" with (ios_base::app | ios_base::out), and serialize some object to the new-opend Archive. then when I use text_iarchive to load, I got error messages. I checked some manuals, and use boost::archive::no_header to skip the archive headers like "22 serialization::archive" when appending objects. but still I got error messages when loading. can anyone tell me how to store and append objects to a single Archive, and load correctly. tks.

1 0

[Accumulators] Errors compiling the "Hello, World!" example
by Marco Guazzone 11 Jan '10

11 Jan '10

Hello! I'm new to Accumulators. I've tried to compile the "Hello, World!" example (found in the User Guide) but it fails: --- [error] --- $ g++ -ansi -Wall -o accumulators_test1 accumulators_test1.cpp /usr/include//boost/accumulators/statistics_fwd.hpp: In function ‘int main()’: /usr/include//boost/accumulators/statistics_fwd.hpp:87: error: ‘template<int N> struct boost::accumulators::tag::moment’ is not a function, /usr/include//boost/accumulators/statistics/moment.hpp:104: error: conflict with ‘template<int T2, class Arg1, class A0, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10, class A11, class A12, class A13, class A14> typename boost::accumulators::detail::extractor_result<Arg1, boost::accumulators::tag::moment<T2> >::type boost::accumulators::extract::moment(const Arg1&, const A0&, const A1&, const A2&, const A3&, const A4&, const A5&, const A6&, const A7&, const A8&, const A9&, const A10&, const A11&, const A12&, const A13&, const A14&)’ accumulators_test1.cpp:22: error: in call to ‘moment’ --- [/error] --- My system is: Fedora 12 x86_64 -- GCC 4.4.2 20091222 (Red Hat 4.4.2-20) -- Boost 1.39 (also tried with the latest Boost trunk) Just for the sake of completeness, here below is the code stored in the "accumulators_test1.cpp" file --- [code] --- #include <iostream> #include <boost/accumulators/accumulators.hpp> #include <boost/accumulators/statistics/stats.hpp> #include <boost/accumulators/statistics/mean.hpp> #include <boost/accumulators/statistics/moment.hpp> using namespace boost::accumulators; int main() { // Define an accumulator set for calculating the mean and the // 2nd moment ... accumulator_set<double, stats<tag::mean, tag::moment<2> > > acc; // push in some data ... acc(1.2); acc(2.3); acc(3.4); acc(4.5); // Display the results ... std::cout << "Mean: " << mean(acc) << std::endl; std::cout << "Moment: " << moment<2>(acc) << std::endl; return 0; } --- [/code] --- Where I am wrong? Thank you very much for any help!! Best, -- Marco

2 3

[repost][serialization] version handling in {save|load}_construct_data
by JOAQUIN M. LOPEZ MUÑOZ 11 Jan '10

11 Jan '10

Hello, allow me to repost this message from a couple of weeks ago: I've taken a look at how the version number is dealt with in Boost.Serialization collection serialization code: * The relevant code at saving time is: if(3 < ar.get_library_version()){ const unsigned int item_version = version< BOOST_DEDUCED_TYPENAME Container::value_type >::value; ar << BOOST_SERIALIZATION_NVP(item_version); } * At loading time, the equivalent code is: unsigned int item_version; ar >> BOOST_SERIALIZATION_NVP(count); if(3 < ar.get_library_version()) ar >> BOOST_SERIALIZATION_NVP(item_version); else item_version = 0; Can someone (aka Robert :-) ) shed some light on this bit? Why the version number has to be given such manual processing when this is not needed if, for instance, serializating values via the simple ar&value? I'm trying to do the equivalent thing in Boost.MultiIndex. Thank you, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

4 3

Re: [Boost-users] boost.m4 checks correct header but detects wrong header version
by Peter Schueller 11 Jan '10

11 Jan '10

Hi Tsuna, On Mon, Jan 11, 2010 at 08:30, tsuna <tsunanet(a)gmail.com> wrote: > On Mon, Aug 24, 2009 at 1:57 AM, Peter Schueller <ps(a)kr.tuwien.ac.at> wrote: >> (posting to the boost-users list and to the boost.m4 maintainer) > > Hi Peter, > sorry for the belated reply. No problem at all. >> I have several boost installations, among others a 1.34.1 in >> /usr/include and several in my homedir in >> /home/staff/ps/include/boost-1_36/ >> /home/staff/ps/include/boost-1_37/ >> /home/staff/ps/include/boost-1_39/ >> >> Calling configure with --with-boost=/home/staff/ps/include/boost-1_37/ >> I get the following information: >> >> checking for Boost headers version >= 103300... >> /home/staff/ps/include/boost-1_37/include >> checking for Boost's header version... 1_34_1 >> >> The first check finds the correct headers, the second one uses the wrong ones. > > I believe this issue has been fixed by > http://github.com/tsuna/boost.m4/commit/93faeb67fbbc5d68a397c64ebc2dddf23a9… > > Can you retry with the latest version and let me know if it still > doesn't work for you? Thank you very much, this indeed resolves the issue! > Happy new year! Happy new year to you as well! Best Regards, Peter -- Peter Schüller Vienna University of Technology, Institute of Information Systems Favoritenstrasse 9-11/1843, 1040 Wien, Austria T: +43 1 58801 18470 E: ps(a)kr.tuwien.ac.at DVR: 0005886 http://www.kr.tuwien.ac.at/staff/ps

1 0

Re: [Boost-users] [repost][serialization] version handling in{save|load}_construct_data
by JOAQUIN M. LOPEZ MUÑOZ 10 Jan '10

10 Jan '10

________________________________________ De: boost-users-bounces(a)lists.boost.org [boost-users-bounces(a)lists.boost.org] En nombre de Robert Ramey [ramey(a)rrsd.com] Enviado el: domingo, 10 de enero de 2010 20:22 Para: boost-users(a)lists.boost.org Asunto: Re: [Boost-users] [repost][serialization] version handling in{save|load}_construct_data > > I investigated a little bit more. Seems that save/load_construct data needs > the version # and there is no place else to get it. Why can't you directly use serialization::version<T>::value? This is for instance what you're doing at lines 51 and following of boost/serialization/hash_collections_save_imp.hpp. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

2 1

Re: [Boost-users] [repost][serialization] version handling in{save|load}_construct_data
by JOAQUIN M. LOPEZ MUÑOZ 10 Jan '10

10 Jan '10

________________________________________ De: boost-users-bounces(a)lists.boost.org [boost-users-bounces(a)lists.boost.org] En nombre de Robert Ramey [ramey(a)rrsd.com] Enviado el: sábado, 09 de enero de 2010 21:40 Para: boost-users(a)lists.boost.org Asunto: Re: [Boost-users] [repost][serialization] version handling in{save|load}_construct_data > I believe that this came about when error to the serialization of > collections was discovered. Previous library versions didn't > properly save the version of the collection item. When this > was corrected, this code was needed to permit the the loading > of archives created previously. > > If the type isn't versioned (e.g. some primitive type), then the > default version # would be zero. I suppose this could be > made more elaborate so that the version # wouldn't even > be in the archive in these cases - but that's not way we did it. > > I don't know if that answers your question, but that's what > I remember about it. I'm afraid that does not entirely answer my question. I understand what the "if(3 < ar.get_library_version()){" guard is for. What puzzles is me is why you need to explicitly save the type serialization version number when this info is seemingly recovered in other contexts without any explicit user operation. Let me put it another way: consider a user defined type my_type with associated serialization code: template<class Archive> void serialize(Archive& ar,my_type & m,const unsigned int version) { ... } When serialize() is called internally by Boost.Serialization, version is correctly passed without the user explicitly saving this info as it happens in the code for collection serialization. Why this difference? Am i making myself clear as to what the root of my puzzlement is? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

2 2

BOOST_FUSION_ADAPT_STRUCT
by Hicham Mouline 09 Jan '10

09 Jan '10

Hello, Can I use this macro with specialized templates as well? template <typename T> struct range { T min ; T max ; } ; BOOST_FUSION_ADAPT_STRUCT( range<double>, (double, min) (double, max) } Rds,

2 2

[BGL] dijkstra_shortest_paths with listS
by gast128 09 Jan '10

09 Jan '10

Hello all, BGL supports a lot of graph algorithms, and lots of stuff get default filled in when using vecS as container type of vertices. However things become pretty ugly when not using this container. Below I used a listS for both edges and vertices. Maybe it can help other people (and maybe somebody can cross check me). Note that some constructs could be bundled, but for clearity I explicitly wrote all things out. I use the graph from the BGL book as example (figure 13.3). void TestgraphDijkstra() { typedef boost::adjacency_list<boost::listS, boost::listS, boost::bidirectionalS, std::string> Graph; typedef boost::graph_traits<Graph>::vertex_descriptor VertexDescriptor; typedef boost::graph_traits<Graph>::edge_descriptor EdgeDescriptor; typedef int Weight; typedef std::map<EdgeDescriptor, Weight> WeightMap; typedef std::map<VertexDescriptor, size_t> VertexIndexMap; typedef std::map<VertexDescriptor, Weight> DistanceMap; typedef std::map<VertexDescriptor, VertexDescriptor> PredecessorMap; Graph graph; WeightMap mapWeigth; VertexIndexMap mapVertexIndex; DistanceMap mapDistance; PredecessorMap mapPredecessor; boost::associative_property_map<WeightMap> pmWeigth(mapWeigth); boost::associative_property_map<VertexIndexMap> pmVertexIndex (mapVertexIndex); boost::associative_property_map<DistanceMap> pmDistance(mapDistance); boost::associative_property_map<PredecessorMap> pmPredecessor (mapPredecessor); //build a graph according to figure 13.3 //add vertices const VertexDescriptor vA = boost::add_vertex(graph); const VertexDescriptor vB = boost::add_vertex(graph); const VertexDescriptor vC = boost::add_vertex(graph); const VertexDescriptor vD = boost::add_vertex(graph); const VertexDescriptor vE = boost::add_vertex(graph); //set vertex names graph[vA] = "A"; graph[vB] = "B"; graph[vC] = "C"; graph[vD] = "D"; graph[vE] = "E"; //add edges const EdgeDescriptor eAC = boost::add_edge(vA, vC, graph).first; const EdgeDescriptor eBB = boost::add_edge(vB, vB, graph).first; const EdgeDescriptor eBD = boost::add_edge(vB, vD, graph).first; const EdgeDescriptor eBE = boost::add_edge(vB, vE, graph).first; const EdgeDescriptor eCB = boost::add_edge(vC, vB, graph).first; const EdgeDescriptor eCD = boost::add_edge(vC, vD, graph).first; const EdgeDescriptor eDE = boost::add_edge(vD, vE, graph).first; const EdgeDescriptor eEB = boost::add_edge(vE, vB, graph).first; const EdgeDescriptor eEA = boost::add_edge(vE, vA, graph).first; //set edge weights boost::put(pmWeigth, eAC, 1); boost::put(pmWeigth, eBB, 2); boost::put(pmWeigth, eBD, 1); boost::put(pmWeigth, eBE, 2); boost::put(pmWeigth, eCB, 7); boost::put(pmWeigth, eCD, 3); boost::put(pmWeigth, eDE, 1); boost::put(pmWeigth, eEB, 1); boost::put(pmWeigth, eEA, 1); //build index map boost::put(pmVertexIndex, vA, 0); boost::put(pmVertexIndex, vB, 1); boost::put(pmVertexIndex, vC, 2); boost::put(pmVertexIndex, vD, 3); boost::put(pmVertexIndex, vE, 4); //note: color map not needed, because of index map? boost::dijkstra_shortest_paths(graph, vA, boost::weight_map (pmWeigth).vertex_index_map(pmVertexIndex).distance_map (pmDistance).predecessor_map(pmPredecessor)); for (DistanceMap::const_iterator itDist = mapDistance.begin(); itDist != mapDistance.end(); ++itDist) { //dump const VertexDescriptor v = itDist->first; const VertexDescriptor vPrev = mapPredecessor[v]; std::cout << "Distance(" << graph[v] << ") = " << itDist->second << ", " << "Parent(" << graph[v] << ") = " << graph[vPrev] << std::endl; } }

2 6

Non-Boost question: HTML parser with hpricot
by Boost lzw 09 Jan '10

09 Jan '10

Hi folks, Sorry for posting a question unrelated to boost. I know pretty well that boost has perfect solutions to it. But I am working on a legacy system using Hpricot of Ruby on Rail. So only Hpricot-specific suggestions please. Thank you. In my HTML parser, I can parse a html file with the following hpricot commands: (1) doc = open( "MyFileToParse.html" ) { |f| Hpricot(f) } (2) elements = (doc.search("/html/body/table/tr/td/table/tr/td/font") ) (3) puts (elements[13]).inner_html to get the following output: Giaever G, et al (2002). Functional profiling of the Saccharomyces c erevisiae genome. Nature, 418:387-91. [<a href=" http://www.ncbi.nlm.nih.gov/entr ez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12140549&dopt=Abstract" target="_ blank">PubMed</a>] How can I proceed to get the following results (3) and (4) respectively? (3) Giaever G, et al (2002). Functional profiling of the Saccharomyces c erevisiae genome. Nature, 418:387-91. (4) http://www.ncbi.nlm.nih.gov/pubmed/12140549?dopt=Abstract NOTE: to get (4) I need to take two more steps: (5) replace "&" with "?" (6) replace "PubMed" with "pubmed" (this might be trivial, but how?) in the process of parsing in addition to "normal" HTML parsing. Thanks a lot in advance. Robert

4 7

Problem with boost::thread::sleep
by Rob Yull 08 Jan '10

08 Jan '10

Using Boost 1.41, MSVC 2005, Win 7 x64 (compiling 32-bit). I was trying to set a small delay in a loop, so the loop doesn't consume all of the processor, using boost::thread::sleep(). I tried using the example from the threading documentation (http://www.boost.org/doc/libs/1_41_0/doc/html/thread/time.html#thread.time. get_system_time): boost::thread::sleep(boost::posix_time::milliseconds(25)); I keep getting a compiler error from the line above. Error 2 error C2664: 'boost::thread::sleep' : cannot convert parameter 1 from 'boost::date_time::subsecond_duration<base_duration,frac_of_second>' to 'const boost::system_time &' Is there something else I need to be doing to make this work? -Rob Yull

2 2

Automatic thread join
by Lloyd 08 Jan '10

08 Jan '10

Hi, Is there a way to join a thread automatically to the main thread when it finishes execution? In my case, the main thread does not call the "thread->join()", so even if the work of the thread is over, the thread never joins to the main thread. What is the technique usually used to make a thread join to its main thread, so as to avoid wastage of resources. Thanks, Lloyd ___________________ Happy New Year 2010

5 7

boost::crc - newbie help
by Paul Caswell 08 Jan '10

08 Jan '10

Hello all, I've the task of implementing the following CRC computation and was wondering whether I could use boost::crc to save me a lot of hassle. ------------------------ Default 32-bit Parity (CRC) This 32-bit CRC is the same as that described in EKMS 304 ([6]) and EKMS 322 ([8]) and could be used as a CRC method in the keyAlgorithm Attribute (with OID { 1 2 826 0 1145 0 5 1 }). Let g(x) be the polynomial x32 + x22 + x2 + x + 1. Let d(x) be the k bits of data to have parity applied to them. The first bit of data is the coefficient of the (k-1)st power of x etc. Let f(x) be the polynomial naturally represented by the initial fill 0xF8DD4258, i.e. x31 + x30 + x29 + x28 + x27 + x23 + x22 + x20 + x19 + x18 + x16 + x14 + x9 + x6 + x4 + x3. Then the output is c(x) = x32d(x) + xkf(x) mod g(x). The polynomial c(x) is then interpreted as a stream with the coefficient of x31 coming first and the coefficient of x0 coming last. The 32-bit parity is then c(x). This calculation can be done using a simple shift register as shown below. The shaded stages represent ones in the initial fill. The logic steps k times to determine c(x), which is the final state of the register. <diagram omitted> ------------------------ Any advice and or help would be appreciated. Regards, Paul This email and any files transmitted with it may be confidential, legally privileged and protected in law and are intended solely for the use of the individual to whom it is addressed. Any view or opinions presented are solely those of the author and do not necessarily represent those of Stonewood Group Ltd. If you have received this Email in error please contact the sender by return and confirm that its contents have been destroyed without further distribution or disclosure. Please email admin(a)stonewood.co.uk with any questions relating to this disclaimer. Stonewood Group Ltd has Registered Offices at Sandford Lane, Wareham, Dorset BH20 4DY. The company is registered in England and Wales under no: 3007498.

1 0

Thread not interrupted in runtime linked library
by Lloyd 08 Jan '10

08 Jan '10

Hi, Using boost thread a new thread is created. The thread loads a DLL using LoadLibrary() call, gets the procedure address by calling GetProcAddress() and executes the procedure. The body of procedure is an infinite loop. When I try to interrupt the thread from main thread it is not interrrupted! What could be the reason? In all other cases the thread is interrupted except when it is inside the dynamically (runtime) linked library procedure. What could be the reason? Please share some idea... Thank you very much Lloyd ___________________ Happy New Year 2010

2 2

Xpressive continuing search from previous match
by K. Noel Belcourt 08 Jan '10

08 Jan '10

Hi, I have a search for a regular expression like this. sregex_iterator cur(buffer.begin(), buffer.end(), defined_re), end; for(; cur != end; ++cur) { ... But what I really want to do is perform a new regex search starting at the location in the buffer marking the end of the previous search. Is there a way to get the buffer index from the previous search so I can start the new search past the previous search? I apologize if this is easy to do, I must have missed it with my quick perusal through the documentation. Thanks. -- Noel Belcourt

3 3

Defining Statements with Proto
by David A. Greene 08 Jan '10

08 Jan '10

A few years ago, I asked how to define a grammar with Proto to match something like this: if_(expr) [ stmt, stmt, ... ].else [ stmt, stmt, ... ]; The answer was to do this: struct Grammar; struct ExpressionGrammar; struct StatementGrammar; struct Domain; template<typename Expr> struct Expression : proto::extends<Expr, Expression<Expr>, Domain> { typedef proto::extends<Expr, Expression<Expr>, Domain> base_type; Expression(Expr const & expr = Expr()) : base_type( expr ) {} }; struct Domain : proto::domain< proto::generator< Expression >, Grammar> {}; struct If {}; BOOST_PROTO_DEFINE_FUNCTION_TEMPLATE( 1 , if_ , Domain , (If) , BOOST_PP_SEQ_NIL ); // Here is the grammar for if_ statements // matches if_(e1)[e2] struct IfGrammar : boost::proto::subscript< boost::proto::arg< boost::proto::unary_expr< If, ExpressionGrammar >, >, StatementGrammar > {}; // An else_ "operator" template<typename Expr> struct Expression< Expr , typename enable_if<proto::matches<Expr, IfGrammar> >::type > : proto::extends<Expr, Expression<Expr>, Domain> { Expression() : else_(proto::make_expr<Else>(*this)) {}; proto::result_of::make_expr< Else, // else is now an "operator" Expression<Expr> const >::type const else_; }; // matches if_(e1)[e2].else_[e3] struct IfElseGrammar : boost:proto::subscript< boost::proto::arg< boost::proto::unary_expr< Else, IfGrammar >, >, StatementGrammar > {}; I didn't understand it then and I don't now. :) However, it seems to be obsolete since BOOST_PROTO_DEFINE_FUNCTION_TEMPLATE doesn't seem to exist anymore (it's not documented, anyway). So how would this be formulated in modern Boost.Proto? I'm guessing I will need an expression template wrapper (called Expression<> above) that uses some combination of BOOST_PROTO_BASIC_EXTENDS, BOOST_PROTO_EXTENDS_SUBSCRIPT and BOOST_PROTO_EXTENDS_FUNCTION. But of course not all statements have a valid operator() overload and no expressions do. I guess the grammar will take care of that, yes? I'm really puzzled about how to do the ".else_" part. I was hoping I could look to Phoenix to get a clue but it doesn't seem to use Proto. Any help? Thanks! -Dave

3 12

[foreach] BOOST_FOREACH question...
by barcaroller 08 Jan '10

08 Jan '10

Does the BOOST_FOREACH macro work for empty sequences or must a size check be done explicitly? list<int> mylist; if (!mylist.empty()) // <--- necessary? { foreach(int& i, mylist) { // take action } } The reason I ask is that neither begin() nor end() return valid iterators for empty sequences, but it is my understanding that BOOST_FOREACH needs iterators to work properly.

3 3

fusion and mpl
by Peter Foelsche 08 Jan '10

08 Jan '10

I need to be able to convert a mpl sequence into something like a tuple: typedef boost::mpl::vector<double> CMplSequence; typedef CCreateVectorFromMpl<CMplSequence>::type CVector; I need to have runtime access with constant index: CVector s; get<0>(s) = 1.0; std::cout << get<0>(s) << "\n"; I need to be able to retrieve the type at compile time: typedef CGetType<CVector, boost::mpl::long_<0> >::type CFirstType; I already wrote something like this using std::pair as the tuple but I'm running into problems storing reference types on Windows. Peter

1 0

boost::multi_array equivalent for runtime number of dimensions
by Hicham Mouline 07 Jan '10

07 Jan '10

Hello, I only know at runtime the dimension and extends of a multidimensional array, though the number of dimensions is always < 10 for e.g. Is there a container that allows this? Otherwise, I can write code for multi_array<T, 2> multi_array<T, 3> . multi_array<T, 10>, do a switch case on the dimensions variable, and select the appropriate code, regards,

3 3

[Math/Statistical Distributions+Random] Random number generation
by Marco Guazzone 07 Jan '10

07 Jan '10

Hi all! I'm a "boost newbie" so sorry for too trivial questions. Just trying to use boost for some statistical experiments, involving statistical distribution fitting, quantile generation (for goodness-of-fit tests), random variate generation, and so on. . The "Math/Statistical Distribution" library is great and almost complete. But I'm just curious why the random number generation (provided by the "Random" lib) and this library have not been integrated. For instance, the boost::random::exponential_distribution and the boost::math::exponential_distribution are two different worlds. I think a function like this below would be very helpful: --- [snip] --- template <typename Generator, typename RealType, typename Policy> inline RealType rand(Generator& rng, const exponential_distribution<RealType, Policy>& dist) { return -1.0 / dist.lambda() * std::log(1.0-rng()); } --- [snip] --- or something similar (e.g., rand implemented as a class method) In this case only two objects are needed: * boost::random::mersenne_twister * boost::math::exponential_distribution Instead, actually I have to keep different objects. For instance, for the exponential distribution: * boost::random::exponential_distribution * boost::random::mersenne_twister * boost::random::variate_generator * boost::math::exponential_distribution Unluckely I can't use boost::math::exponential_distribution in place of boost::random::exponential_distribution since boost::random::variate_generator expects a specific interface for the distribution. Well, what is the rationale behind the choice of this separation? Do you think would be useful to provide this kind of integration? Thank you very much in advance!! Cheers -- Marco

4 13

Re: [Boost-users] BGL: shared_ptr as bundled properties > how to generate properties maps ???
by Damien Maupu 07 Jan '10

07 Jan '10

>On Wed, 6 Jan 2010, Emil Dotchevski wrote: > > On Wed, Jan 6, 2010 at 8:20 AM, Damien Maupu <damien.maupu_at_[hidden]> wrote: >>> I write something like: >>> typedef boost::shared_ptr<Vertex> VertexPtr; >>> typedef boost::shared_ptr<Edge> EdgePtr; >>> typedef adjacency_list<vecS, vecS, directedS, VertexPtr, EdgePtr> Graph; >> >> It is probably not a good idea to use shared_ptr for graphs; some >> graphs have cycles and this will lead to leaks (if your data structure >> is a DAG, you're fine.) >I don't think that will be an issue -- his shared pointers link to >properties; the graph structure itself is in BGL data structures. >However, if the properties refer to other graph vertices or edges, there >is an issue of dangling references if those objects are removed from the >graph. >-- Jeremiah Willcock Hi, I am not sure I understand why using smart pointer should be an issue. Could you explain me in little more details? Do you know how to get properties maps if bundle properties are pointer or smart pointers? Thank you Damien

2 1

ASIO async_read_until with condition + strand
by Christophe Bourez 07 Jan '10

07 Jan '10

Can someone help with the boost async_read_until with condition ? I need to implement a request/response protocol. * A request cannot be send until the response has been completely read from the server. * Response's length from the server is unknown. The data must be parsed thanks to a parser to understand the content of the buffer. The parser is capable to return a code specifying whether the data is complete, which could require more reading on the socket. I'd like to implement my client asynchronously using ASIO. Here is the solution I implemented: the async send handler calls async_read whose handler calls async_read handler again until the message is complete. Due to the here above constraints, I am forced to queue the requests and async send the next request by the end of the handler of the current response (when it is complete, otherwize it async_reads again). I have tried to use async_read_until with a condition, but the parser was invoked very (too) often (every 2 bytes) and penalizes the performance. Would it be possible to reduce the number of calls to the condition (by reading at once the maximum of bytes present on the socket for example)? I'd like to async send the requests as soon as I can, in order to avoid the queue. Is it possible to implement a solution by using the ASIO strands? If yes, I have the feeling that the way I implemented the response handling will not work with the strand because the handler of async_read calls async_read again, which will probably come at the end of the strand's queue (which may contain many async_send requests). Could async_read_until with a condition solves this issue by avoiding to async_read again? Any help will be very appreciated. Christophe

1 0

[thread] Getting this warning message with optimization turn on
by Shiou Ming Lee 07 Jan '10

07 Jan '10

Hi, I'm building my program that depends on Boost.thread, but getting following warning message, only when compiler's optimization been turn on. C:/boost_1_41_0/boost/thread/win32/thread_heap_alloc.hpp: In member function `bool gUtil::GLog::LogWriterManager::startAsyncLogging(unsigned int)': C:/boost_1_41_0/boost/thread/win32/thread_heap_alloc.hpp:156: warning: 'heap_memory' might be used uninitialized in this function In the mentioned function, startAsyncLogging(unsigned int), there's only one line of code that involves Boost.thread: // loggingThread is class LogWriterManager's member, of boost::thread type. loggingThread = boost::thread(boost::bind(&LogWriterManager::loggingThreadFunc, this)); This happens for MinGW 3.4 on Windows Vista SP1 32-bits, but not for GCC 4.4 on Fedora 11 x86. The Boost release is of version 1.41.0. Any idea what should I do for this warning message? Or should I just leave optimization on and ignore this message? Thanks & Regards Shiou Ming

3 3

[Signals2] How to connect member functions with more than one argument?
by Marco Guazzone 07 Jan '10

07 Jan '10

Dear all, I am new to Boost.Signals2, so sorry for the possibly trivial question. My problem is that I am not able to connect a member function with more than one argument to a signal. My test code is the following: --- [code] --- #include <boost/bind.hpp> #include <boost/signals2.hpp> #include <iostream> template <typename IntT=int, typename RealT=double> struct event_consumer { typedef IntT int_type; typedef RealT real_type; typedef boost::signals2::signal<void (int_type,real_type)> signal_type; typedef event_consumer<int_type,real_type> self_type; void consume() { sig.connect(boost::bind(&self_type::process, this, _1)); sig(2,0.5); } void process(int_type x, real_type y) { std::cout << "X: " << x << " -- Y: " << y << std::endl; } signal_type sig; }; int main() { event_consumer<> consumer; consumer.consume(); } --- [/code] --- When I compile it (with g++ 4.4.2 and flags --ansi --Wall) I get this error: --- [error] --- $ g++ -Wall -ansi -o test_signal test_signal.cpp In file included from .../boost/bind.hpp:22, from test_signal.cpp:1: .../boost/bind/bind.hpp: In instantiation of ‘boost::_bi::result_traits<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double)>’: ...//boost/bind/bind_template.hpp:15: instantiated from ‘boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >’ test_signal.cpp:15: instantiated from ‘void event_consumer<IntT, RealT>::consume() [with IntT = int, RealT = double]’ test_signal.cpp:32: instantiated from here .../boost/bind/bind.hpp:69: error: ‘void (event_consumer<int, double>::*)(int, double)’ is not a class, struct, or union type In file included from ...//function/detail/maybe_include.hpp:23, from .../boost/function/detail/function_iterate.hpp:14, from .../boost/preprocessor/iteration/detail/iter/forward1.hpp:57, from .../boost/function.hpp:64, from .../boost/signals2/signal.hpp:18, from .../boost/signals2.hpp:16, from test_signal.cpp:2: .../boost/function/function_template.hpp: In static member function ‘static void boost::detail::function::void_function_obj_invoker2<FunctionObj, R, T0, T1>::invoke(boost::detail::function::function_buffer&, T0, T1) [with FunctionObj = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T0 = int, T1 = double]’: .../boost/function/function_template.hpp:913: instantiated from ‘void boost::function2<R, T1, T2>::assign_to(Functor) [with Functor = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T0 = int, T1 = double]’ .../boost/function/function_template.hpp:722: instantiated from ‘boost::function2<R, T1, T2>::function2(Functor, typename boost::enable_if_c<boost::type_traits::ice_not::value, int>::type) [with Functor = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T0 = int, T1 = double]’ .../boost/function/function_template.hpp:1064: instantiated from ‘boost::function<R(T0, T1)>::function(Functor, typename boost::enable_if_c<boost::type_traits::ice_not::value, int>::type) [with Functor = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T0 = int, T1 = double]’ .../boost/function/function_template.hpp:1105: instantiated from ‘typename boost::enable_if_c<boost::type_traits::ice_not::value, boost::function<R(T0, T1)>&>::type boost::function<R(T0, T1)>::operator=(Functor) [with Functor = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T0 = int, T1 = double]’ .../boost/signals2/detail/slot_template.hpp:156: instantiated from ‘void boost::signals2::slot2<R, T1, T2, SlotFunction>::init_slot_function(const F&) [with F = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T1 = int, T2 = double, SlotFunction = boost::function<void(int, double)>]’ .../boost/signals2/detail/slot_template.hpp:81: instantiated from ‘boost::signals2::slot2<R, T1, T2, SlotFunction>::slot2(const F&) [with F = boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >, R = void, T1 = int, T2 = double, SlotFunction = boost::function<void(int, double)>]’ test_signal.cpp:15: instantiated from ‘void event_consumer<IntT, RealT>::consume() [with IntT = int, RealT = double]’ test_signal.cpp:32: instantiated from here .../boost/function/function_template.hpp:153: error: no match for call to ‘(boost::_bi::bind_t<boost::_bi::unspecified, void (event_consumer<int, double>::*)(int, double), boost::_bi::list2<boost::_bi::value<event_consumer<int, double>*>, boost::arg<1> > >) (int&, double&)’ --- [/error] --- Thank you very much for the support!!! Best, -- Marco

2 2

[Preprocessor] how to use REPEAT_FROM_TO for 2 arguments
by Kai Liu 07 Jan '10

07 Jan '10

Hi, I am trying to use the preprocessor library to simplify the code I have. The problem: I have many lines of the following assignments: mybfclass x_0_mybf; mybfclass x_1_mybf; ... mybfclass1 x_0_mybf1; mybfclass1 x_1_mybf1; ... mybfclass2 x_0_mybf2; mybfclass2 x_1_mybf2; then I defined several vectors: vector<mybfclass*> x_mybf; vector<mybfclass1*> x_mybf1; vector<mybfclass2*> x_mybf2; * use the boost preprocessor library, I write the following code: #define* DECLX_mybf(z, n, text) BOOST_PP_CAT(text, BOOST_PP_CAT(_, mybf)).push_back(&BOOST_PP_CAT(text, BOOST_PP_CAT(BOOST_PP_CAT(_, n), BOOST_PP_CAT(_, mybf)))); *#define* DECLX_mybf1(z, n, text) BOOST_PP_CAT(text, BOOST_PP_CAT(_, mybf)).push_back(&BOOST_PP_CAT(text, BOOST_PP_CAT(BOOST_PP_CAT(_, n), BOOST_PP_CAT(_, mybf)))); *#define* DECLX_mybf2(z, n, text) BOOST_PP_CAT(text, BOOST_PP_CAT(_, mybf)).push_back(&BOOST_PP_CAT(text, BOOST_PP_CAT(BOOST_PP_CAT(_, n), BOOST_PP_CAT(_, mybf)))); BOOST_PP_REPEAT_FROM_TO(0, 2, DECLX_mybf, x); *// generated: x_mybf.push_back(&x_0_mybf); x_mybf.push_back(&x_1_mybf); * BOOST_PP_REPEAT_FROM_TO(0, 2, DECLX_mybf1, x); *// generated: x_mybf1.push_back(&x_0_mybf1); x_mybf1.push_back(&x_1_mybf); * BOOST_PP_REPEAT_FROM_TO(0, 2, DECLX_mybf2, x); *// generated: x_mybf2.push_back(&x_0_mybf2); x_mybf2.push_back(&x_1_mybf); * but I think it is too much coding here, since I have to write a macro for each mybf occurrence, DECLX_mybf I have difficulty to use the BOOST_PP_REPEAT_FROM_TO for two argument, since the macro(z, x, data) can only accept one argument data, however, I need to pass two arguments x and mybf to the macro, in order to generate a mybfclass1 x_0_mybf. does anyone know how to apply macro to generate the above structure? thanks. /Kenny * *

2 2

[BGL] simple problem: how to detect connections in a dag?
by Olaf Krzikalla 06 Jan '10

06 Jan '10

Hi @boost, we have a rather simple problem here for which we however couldn't find a simple solution in the BGL. Probably because we aren't graph experts. We have a dag and two vertices in this dag. Now we just want to know if these vertices are connected (acrtually we don't need the path), that is if one vertex is in a parent chain of the other. Thanks in advance Olaf Krzikalla

5 9

Re: [Boost-users] [asio] Sending large packages
by Nicola Michael Gutberlet 06 Jan '10

06 Jan '10

Doesn't anyone have any ideas? Did anyone receive this mail? Best regards and a happy new year ;-) _____ From: Nicola Michael Gutberlet [mailto:nicola.gutberlet@hhi.fraunhofer.de] Sent: 15 December 2009 17:28 To: 'boost-users(a)lists.boost.org' Subject: RE: [asio] Sending large packages Some testing showed that the maximum package (load) size of boost::asio::write/read() for a TCP socket seems to be 1007 kB _____ From: Nicola Michael Gutberlet [mailto:nicola.gutberlet@hhi.fraunhofer.de] Sent: 15 December 2009 17:11 To: 'boost-users(a)lists.boost.org' Subject: [asio] Sending large packages Dear all, Is there a well-defined way of sending large packages over TCP? Or do I have to split the packages on my own? For explanation: I want to send images (size around 6MB). Best regards, Nicola

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