- Boost-users - lists.boost.org

Re: [Boost-users] Regexp without ^ and $
by Merrill Cornish 02 Aug '05

02 Aug '05

Stuart & John, Thanks for the information. I made the dangerous assumption that I "knew" what a match would do and that it would work like Perl. Thanks again, Merrill

1 0

Re: [Boost-users] shared_array EXC_BAD_ACCESS
by Christopher Hunt 02 Aug '05

02 Aug '05

>> When UTFStringHolder is instantiated, I get an EXC_BAD_ACCESS and my >> stack trace shows that pthread_mutex_init is being called. Here's the >> complete stack trace: >> >> #0 0x90012730 in _pthread_mutex_init >> #1 0x00088424 in boost::detail::lightweight_mutex::lightweight_mutex() >> at lwm_pthreads.hpp:47 > > These things usually happen when you have inconsistent definitions of > BOOST_HAS_THREADS in the source files or libraries that form your > program. > Does the code still fail when you try it as a single self-contained > source > file? If it does, can you post a minimal example that fails? Unfortunately it is not reproducible in a single self-contained file... which is interesting isn't it... Also, I've managed successfully to have a shared_array member as part of another class's instantiation. The only difference that I see is the timing of when they're instantiated. Could it be anything to do with the initialisation of my pthread environment? (what initialises pthreads?) I'll do some experiments around this. If it is of interest, this is all being done in a Mac OS X Cocoa Objective-C environment. Cocoa likes to know when it is going multi-threaded (http://developer.apple.com/documentation/Cocoa/Conceptual/ Multithreading/articles/CocoaDetaching.html) and I do let it know, but maybe I should let it know earlier. Thanks for your help. I'll do some more experimentation around the timing of instantiation. Cheers, -C

2 4

Why Boost.Build says that subinclude, and project-root fules are unknown
by Voronkov Konstantin 02 Aug '05

02 Aug '05

Hello, All! I'm trying to build project from folder which differs from BOOST_ROOT. But it gives me error: >H:\tmp\Boost\Tutorials\sample1>bjam --clean >Jamfile:14: in load-aux >rule project-root unknown in module >Jamfile</H:/tmp/Boost/Tutorials/sample1>. >C:/Echo/Boost/boost-build/build\project.jam:310: in load-jamfile >C:/Echo/Boost/boost-build/build\project.jam:68: in project.load >C:/Echo/Boost/boost-build\build-system.jam:80: in load >C:\Echo\Boost\boost-build\kernel\modules.jam:259: in import >C:\Echo\Boost\boost-build\kernel\bootstrap.jam:120: in boost-build >C:\Echo\Boost\boost-build\boost-build.jam:1: in module scope What is the root of the error and how can I fix it? Best Regards, Voronkov Konstantin

1 0

Regexp without ^ and $
by Merrill Cornish 02 Aug '05

02 Aug '05

I am using regex_match() from Boost 1.32.0. I am well famililar with Perl's regular expression, but I got a surprise from Boost's regex_match(). My basic code is static const regex CHAR(" char "); regex_match(newSpec, CHAR) If newSpec is " char ", then it matches, of course. However, if newSpec is " char * ", it doesn't match. Hmmmm. In my Perl experience, a regex of " char " says match those six characters if found ANYWHERE in newSpec. This would mean that a Boost regex of " char " would match a newSpec of " char * ", but it doesn't seem to. If I change the regex to ".* char .*", then it matches, implying that Boost's regex of " char " is being treated as if it were Perl's "^ char $". I could add the ".*" before and after each of my (many) regular exressions. However, I'm guessing there is a match_flag_type value which would do this for me. Unfortunately, none of the match constant descriptions seem to be what I need. How should I write a Boost regex so that it would find " char " anywhere in the input string regardless of any prefix or suffix? Merrill

3 2

a few questions about boost:any
by Shishir Ramam 01 Aug '05

01 Aug '05

Hello fellow boosters! I am looking to use boost:any. While gaining an understanding of how to use it, it strikes me that the real purpose it serves is that the virtual table functionality is exposed to the user. It seems that efficiency of table lookup are then the application responsibility. My first question - Is this a reasonable understanding? I have been looking to see if tag dispatching can somehow circumvent the cost of table lookup that would be necessary, and the only thing that strikes me is to - store a type id within the type boost::any represents, - retrieve this id and either use it in an if/else structure, or a function pointer lookup in an array. A complete tag dispatch implementation seems impossible, since the type id within the boost::any structure is a run time quantity. My second question - Are there better ways to do it than an index into an array of functions? TIA. -shishir -- It is not because things are difficult that we do not dare, it is because we do not dare that things are difficult. - Seneca

1 0

boost python + vc 7.1
by Uwe Schmitt 01 Aug '05

01 Aug '05

Hi, I have a problem with compiling an application using boost python. I use Microsofts VC++ version 7.1. The following lines describe my problem: cl /EHsc /TP /IC:\Python24\include /ID:\home\Administrator\svn_local\public.procoders.net\pcsvm /IC:\boost\include\boost-1_32 /c pythonAdapter.cpp /FopythonAdapter.obj pythonAdapter.cpp C:\Boost\include\boost-1_32\boost\python\operators.hpp(209) : fatal error C1001: INTERNER COMPILERFEHLER (Compilerdatei 'msc1.cpp', Zeile 2701) Whlen Sie im Men '?' von Visual C++ den Befehl 'Software Service', oder ffnen Sie die Hilfedatei fr den Software Service, um weitere Informationen zu erhalten Any hints what to do ? Greetings, Uwe

2 1

Include boost in software distribution?
by Joseph Turian 01 Aug '05

01 Aug '05

Hi, I'm packaging some software for distribution, and the software depends upon the 'program_options' library. I don't want to assume that the user has boost installed, or ever jam. So I was wondering about the potential for automagically building and using the 'program_options' library if it is not already present on the user's system. I would include the source files in libs/program_options/, and write a small Makefile for it. I would also include all the Boost headers. Is this sufficient, even though it wouldn't run the Boost configure script to determine system-specific settings? Can you see any problems in building this library without doing a full Boost install? Thanks! Joseph -- http://www.cs.nyu.edu/~turian/

4 5

Problem using boost::bind and ecore_ipc from Enlightenment
by Offlein 31 Jul '05

31 Jul '05

Hi all, i just subscribed to this List ;) I have a Problem with C++ Member Functions and Pointers to this Member Functions so that they fit into a Function with take a normal Function. I guess i'm a Newbie, otherwise i should have already solved it, i think. ;) I want to use IPC Stuff from Ecore. But before you can make use of ecore_ipc you must initialize it, as far as i can see. I atached 4 Files, where i build a little Scenario: 1. Example.cpp // The Main Program 2. Testclass.hpp 3. Testclass.cpp 4. Makefile // Perhaps you must adjust some of the Variables I commented the important Points in the Code again. So i must first call ecore_ipc_init() // Testclass Line 68 and must supply 3 Functions to ecore for handling Events 1. A Function that is called, when a new IPC Server is added 2. A Function that is called, when a IPC Server is deleted 3. A Function that is called, when some Message is sent Namely: ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_ADD, ipc_server_add, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, ipc_server_del, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DATA, ipc_server_data, NULL ); "ipc_server_add", "ipc_server_del" and "ipc_server_data" are the functions that are available outside the Class Testclass The Example Program as it is compiles and i can start it, the ecore_pic_init() succeds the 3 Functions get "registered" but this 3 submitted Functions are standing outside my Testclass, but my Target is to have they inside my Testclass. That's my Problem, i didn't get the Clue to give these MemberFunctions to these 3 Functions: ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_ADD, ipc_server_add, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, ipc_server_del, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DATA, ipc_server_data, NULL ); I tried Things like that, but that didn't helped me: ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, boost::bind( boost::type<int>(), &Testclass::ipc_server_add ), NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, boost::bind( boost::type<int>(), &Testclass::ipc_server_add, _1, _2, _3 ), NULL ); So i want to ask to the Mailinglist in Hope somebody knows how to do this Task in the right Way. ;) Thanks for your help and Greets to all, Christian

1 0

cvs bjam fails to build for vc7
by Serge Skorokhodov 31 Jul '05

31 Jul '05

Hi, The version of bjam from cvs fails to build for vc7 due to the file 'execunix.c: file unistd.h not found'. It is now: ... #if defined(sun) || defined(__sun) #include <wait.h> #endif ... but it used to be: ... #if defined(sun) || defined(__sun) #include <unistd.h> /* need to include unistd.h on sun for the vfork prototype*/ #include <wait.h> #endif ... TIA -- Serge

2 1

Re: [Boost-users] boost::shared_ptr vs. NULL
by Merrill Cornish 31 Jul '05

31 Jul '05

Thore, >>> To set it to 0, use reset(): Thanks. That's what I need. Merrill

1 0