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regular expression problems
by Green, Jason M NSWCDL, W33 23 Apr '09

23 Apr '09

Sorry, but this strays a little from actual boost. Since there are a handful of you that are probably using regex, I was hoping someone could help with syntax. I have a regex that validates a latitude format. These are the restrictions: Must have an N or S as first letter. It can be all values from 0.0 to 90.0 My first shot at it confirmed format, but not data constraints: "(N|S)\\d{2}\\.\\d{1,6} <file:///\\d%7b2%7d\d%7b1,6%7d> " But any attempts to limit the constraints caused an exception in regex. Is there something wrong w/ how I formatted this: "(N|S)(9[0]\\.0{1-6}|[0-8]\\d\\.\\d{1-6} <file:///\\.0%7b1-6%7d|[0-8]\d\d%7b1-6%7d> )" To me, it reads: 1st char must be N|S If second char is 9, the next chars must be 0.0 through 0.000000 Else If char is 0-8, then the next just has to be digits [0-9].[0-9]{1-6} Can anyone tell me what I am doing wrong? Just FYI, I am coding in VS 2005 C++ Thanks

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Boost Thread with own Callback implementation
by programmine 23 Apr '09

23 Apr '09

I am using boost::thread for starting a member function of an object in a seperate thread. This works for an example like this: ProcessData *data = new ProcessData(); ProcessManager *pm = new ProcessManager(); boost::thread t1(&ProcessManager::start, boost::ref(pm), data); Unfortunately I am not using the ProcessManager directly but a Controller which uses a self implemented callback functionality. It looks like this: typedef Callback1 startProcessingEvent; startProcessingEvent::Signal onStartProcessing; The ProcessManager is binded to this event and I could call the method like myController->onStartProcessing(data); so in the end the ProcessManager->start is called through the Controller. If I know want to run the same thing in a separate thread I cannot just do this: boost::thread t1(&Controller::onStartProcessing, boost::ref(myController), data); because boost does not understand the whole callback thing. Does anyone has an idea how to solve the problem? Thanks -- View this message in context: http://www.nabble.com/Boost-Thread-with-own-Callback-implementation-tp23193… Sent from the Boost - Users mailing list archive at Nabble.com.

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identity_property_map
by Andreas Fabri 23 Apr '09

23 Apr '09

Hello, Are the code and the documentation of the identity_property_map in sync. The documentation says that the class identity_property_map has a template member function operator[](T t) that for any type T, just returns t. In the .hpp file though I find //========================================================================= // A property map that applies the identity function to integers struct identity_property_map : public boost::put_get_helper<std::size_t, identity_property_map> { typedef std::size_t key_type; typedef std::size_t value_type; typedef std::size_t reference; typedef boost::readable_property_map_tag category; inline value_type operator[](const key_type& v) const { return v; } }; Best regards, andreas

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Compiling Boost with PGI
by Ruediger Berlich 23 Apr '09

23 Apr '09

Hi there, I am trying to port my heavily Boost-based application to different compiler(-versions) . I was successful with Intel and various Linux-based gcc versions so far. Now I am trying my luck with the Portland group compiler in version 8. Corresponding compiler support seems to be available in Boost: ./tools/build/v2/tools/pgi.jam ./boost/config/compiler/pgi.hpp A "./configure --with-toolset=pgi" succeeds. The subsequent make, however, results in a plethora of error messages such as the following: gcc.compile.c++ bin.v2/libs/math/build/gcc/release/threading-multi/nextafter.o /bin/sh: line 1: -ftemplate-depth-128: command not found -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fP IC -DBOOST_ALL_NO_LIB=1 -DBOOST_MATH_TR1_DYN_LINK=1 -DNDEBUG -I"." -c -o "bin. v2/libs/math/build/gcc/release/threading-multi/nextafter.o" "libs/math/build/../ src/tr1/nextafter.cpp" Looking into the pgi configuration files makes it appear as if the pgi support isn't finished yet. E.g. pgi.jam has a commented-out line # flags pgi.compile OPTIONS <threading>multi : -mt ; Indeed, pgCC does not accept this switch: $ pgCC -mt pgCC-Error-Unknown switch: -mt The above error message also makes it appear as if gcc options (e.g. "-Wall -pthread") are passed to pgCC. Can anyone comment on the status of PGI support by Boost ? The above happens on a system whose /etc/redhat-release states "Scientific Linux SL Release 4.0 (Beryllium)". The kernel is 2.6.9-42 . Scientific Linux is a Fedora-derivative, being used mostly in particle physics. Thanks and Best Regards, Ruediger

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error while compiling application that uses a static lib that uses boost
by ChristinaDRS 23 Apr '09

23 Apr '09

Greetings all, I have a library called test which has a class that uses boost thread and mutex. here is how the includes in my .h file look: #include <boost/thread/mutex.hpp> #include <boost/thread.hpp> and here are the private vars: boost::mutex connectedPeersMutex_; boost::thread* listenThread_; in the .cpp file i have I use: #include <boost/bind.hpp> Now here is how I built my library with this Makefile: SRC = test1.cpp test2.cpp OBJ = $(SRC:.cpp=.o) OUT = libtest.a INCLUDES = -I. -I$$BOOST_ROOT CCFLAGS = -g CCC = g++ LDFLAGS = -g .SUFFIXES: .cpp default: $(OUT) .cpp.o: $(CCC) $(INCLUDES) $(CCFLAGS) -c $< -o $@ $(OUT): $(OBJ) ar rcs $(OUT) $(OBJ) clean: rm -f $(OBJ) $(OUT) Makefile.bak now I try to build a second application that simply uses the libtest.a like this: $ g++ -I ~/boost_1_38_0/ -I. main.cpp -omain -L/usr/local/lib/ -L. -ltest -lboost_thread-gcc41-mt-1_38 ./libtest.a(test1.o): In function `test1::StartServer(int, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, int)': /home/chris/test1.cpp:337: undefined reference to `boost::thread::thread(boost::function0<void, std::allocator<boost::function_base> > const&)' ./libtest.a(test1.o): In function `~ test1': /home/chris/test1.cpp:36: undefined reference to `boost::mutex::~mutex()' /home/chris/test1.cpp:36: undefined reference to `boost::mutex::~mutex()' /home/chris/test1.cpp:36: undefined reference to `boost::mutex::~mutex()' /home/chris/test1.cpp:36: undefined reference to `boost::mutex::~mutex()' /home/chris/test1.cpp:36: undefined reference to `boost::mutex::~mutex()' ./libtest.a(test1.o):/home/chris/test1.cpp:36: more undefined references to `boost::mutex::~mutex()' follow ./libtest.a(test1.o): In function `test1': /home/chris/test1.cpp:8: undefined reference to `boost::mutex::mutex()' /home/chris/test1.cpp:8: undefined reference to `boost::mutex::mutex()' ./libtest.a(test1.o): In function `boost::detail::thread::lock_ops<boost::mutex>::lock(boost::mutex&)': /usr/include/boost/thread/detail/lock.hpp:33: undefined reference to `boost::mutex::do_lock()' ./libtest.a(test1.o): In function `boost::detail::thread::lock_ops<boost::mutex>::unlock(boost::mutex&)': /usr/include/boost/thread/detail/lock.hpp:45: undefined reference to `boost::mutex::do_unlock()' collect2: ld returned 1 exit status Any idea why I am getting these undefined references? Thanks! Christina -- View this message in context: http://www.nabble.com/error-while-compiling-application-that-uses-a-static-… Sent from the Boost - Users mailing list archive at Nabble.com.

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how to use boost.phoenix with std:for_each?
by Bruce Laing 23 Apr '09

23 Apr '09

Hi, I would like to do something like this: struct a_name { std::string name; }; a_name names[] = { std::string("one"), std::string("two") }; std::for_each( &names[0], &names[1], if_(1) [ std::cout << arg1.name ] ); but VC8 complains "error C2039: 'name' : is not a member of 'boost::phoenix::actor<Eval>'" Can anyone tell me what I'm doing wrong here? Thanks for your insights, - Bruce

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Re: [Boost-users] [Statechart] Passing reference tocreate_processor()
by Andreas Huber 22 Apr '09

22 Apr '09

Hi Igor > I've got the same problem now. Is there > any solution or workaround so far? No, sorry. I haven't yet had sufficient time to find the root cause. I hope I'll get to it tomorrow. Regards, Andreas

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[statechart] Question about do activities
by Bill Clark 22 Apr '09

22 Apr '09

In the boost::statechart documentation, on the UML mapping page, it says this about do activities: “A do activity can be simulated with a separate thread that is started in the entry action and cancelled (!) in the exit action of a particular state.” What's the significance of the exclamation point here? Is it suggesting that the thread should be killed rather than joined? I'm considering boost::statechart for a design where do activities will be a fundamental feature, so I'm wondering whether we might run into problems with this.

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binding to new
by Noah Roberts 22 Apr '09

22 Apr '09

I have a factory that returns an instance of a concrete under an abstraction. It works by matching a "command" string to a command handler that is created and returned to the client. It's basically a stack of regex->creator pairs. The creator is a function that returns a pointer to the abstract type. I'd like to provide that function by binding to the new operator. Currently I have a static function in each concrete type that just calls new and I bind to it. I can't think of what syntax I would use to bind to new and am inclined to think it impossible, but I thought I'd ask.

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Compiling exception/get_error_info.hpp in Visual Stuido UNICODE project
by Oleg V. Zhylin 22 Apr '09

22 Apr '09

Hi, I'm trying to compile my project in MS Visual Studio 2008 with UNICODE and _UNICODE symbols defined. This automatically makes std::string resolve to std::wstring. I'm having a problem compiling exception/get_error_info.hpp because of the following code struct strwrap { std::string str; char const * ptr; explicit strwrap( char const * s ): str(s), ptr(&str[0]) { } Error messages quite predictably say about type inconsistency, there's a copy of them below my signature. Is there a known way to tweak boost to build seamlessly with Visual Studio Unicode projects? WBR Oleg V. Zhylin ovz(a)yahoo.com g:\Program Files\boost\boost_1_38\boost\exception\get_error_info.hpp(30) : error C2664: 'std::basic_string<_Elem,_Traits,_Ax>::basic_string(const std::basic_string<_Elem,_Traits,_Ax>::_Alloc &)' : cannot convert parameter 1 from 'const char *' to 'const std::basic_string<_Elem,_Traits,_Ax>::_Alloc &' with [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] and [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] Reason: cannot convert from 'const char *' to 'const std::basic_string<_Elem,_Traits,_Ax>::_Alloc' with [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] No constructor could take the source type, or constructor overload resolution was ambiguous g:\Program Files\boost\boost_1_38\boost\exception\get_error_info.hpp(30) : error C2440: 'initializing' : cannot convert from 'std::allocator<_Ty>::value_type *' to 'const char *' with [ _Ty=wchar_t ] Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast g:\Program Files\boost\boost_1_38\boost\exception\get_error_info.hpp(30) : error C2439: 'boost::exception_detail::strwrap::ptr' : member could not be initialized g:\Program Files\boost\boost_1_38\boost\exception\get_error_info.hpp(24) : see declaration of 'boost::exception_detail::strwrap::ptr' g:\Program Files\boost\boost_1_38\boost\exception\diagnostic_information.hpp(60) : error C2664: 'std::basic_string<_Elem,_Traits,_Ax>::basic_string(const std::basic_string<_Elem,_Traits,_Ax>::_Myt &)' : cannot convert parameter 1 from 'std::basic_ostringstream<_Elem,_Traits,_Alloc>::_Mystr' to 'const std::basic_string<_Elem,_Traits,_Ax>::_Myt &' with [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] and [ _Elem=char, _Traits=std::char_traits<char>, _Alloc=std::allocator<char> ] and [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] Reason: cannot convert from 'std::basic_ostringstream<_Elem,_Traits,_Alloc>::_Mystr' to 'const std::basic_string<_Elem,_Traits,_Ax>::_Myt' with [ _Elem=char, _Traits=std::char_traits<char>, _Alloc=std::allocator<char> ] and [ _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] No constructor could take the source type, or constructor overload resolution was ambiguous

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