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boost bind with const-references
by Kraus Philipp 28 Nov '10

28 Nov '10

Hello, how I can use the boost::bind with two const reference parameter like: boost::bind( &myclass::mymethod, this, p_env, p_com) The signatur of the method is: void myclass::mymethod( const mpi::environment&, const mpi::communicator& ) and mpi ist the boost::mpi namespace Thanks Phil

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asio async arp
by Lloyd Kanakkassery 28 Nov '10

28 Nov '10

Hi, I want to send and receive asynchronous ARP from my application. I there any method for sending and receiving ARP packets using ASIO, like boost::asio::tcp/boost::asio::udp, or do I have to use raw sockets? In the case of raw sockets how can I receive the respective response to my ARP request? Thanks, Lloyd

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[boost][unit] Intel v12 compiler warning
by Belcourt, K. Noel 27 Nov '10

27 Nov '10

Hi, Just wanted to point out this warning from the Intel v12 compiler. /Users/kbelco/boost/boost/units/unit.hpp(49): warning #1011: missing return statement at end of non-void function "boost::units::unit<Dim, System, Enable>::operator=(const boost::units::unit<D, S, void> &)" this_type& operator=(const this_type&) { } Perhaps there's an easy warning suppression fix? -- Noel Belcourt

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Another decompression issue?
by Bryan 27 Nov '10

27 Nov '10

I'm using Boost 1.43 and I've run across a situation where I'm getting unexpected results when reading the uncompressed stream. I originally thought that it was an issue with my data format interpretation, but it turns out that something seems to be consuming a character from the input stream. Here's a sample of reading the stream a character at a time: cur = 80, next = 80 cur = 80, next = 38 cur = 38, next = 8c cur = 8c, next = c cur = b4, next = db <--- Cur != previous next cur = db, next = 1 cur = 1, next = 1 cur = 1, next = dd This debugging output shows the discontinuity in the stream. The code is pretty simple: boost::iostreams::filtering_istream instream; std::fstream infile; uint8_t d; instream.push(boost::iostreams::bzip2_decompressor()); infile.open("file.bz2", std::ios::binary|std::ios::in); instream.push(infile); while (true){ instream >> d; fprintf(stderr, "cur = %x, next = %x\n", d, instream.peek()); } Reading a large chunk of data from the stream via read() does not have the same issue. I see that there are a few changes for compression in 1.44 [Fix several issues with compression and decompression (#2318, #4091, #3348, #2783, #1579, #3853). ] but it's unclear if this is one of them. Thanks in advance for any help. B

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thread problem
by Kraus Philipp 27 Nov '10

27 Nov '10

Hello, I have some problems with a thread call. I have a call with a method in that should create a thread: void myclass::mymethod( void ) { boost::thread l_thread( boost::bind( &myclass::threadrun, this ) ); l_thread.join(); <= this blocks } My threadrun method shows: void myclass:threadrun( void ) { while (m_listenerrunnging) { boost::this_thread::yield(); } } The join starts the threadrun method but it blocks the main run. I have got a class which should create only one thread (in itsself), that should run until the class is destroyed. The threadrun method reads some data at a network device in asychron calls, so the threadrun can sleep during running. How can I do this in a correct way? Thx Phil

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BOOST fylesystem and staic library
by Claude 27 Nov '10

27 Nov '10

Hi! I am making a static library (.a under Linux and .lib under Windows) and the functions of my library using the capabilities of boost::filesystem. My problem is that when I link my static library to my programs, the linker (I use the MSVC 2010EE on Windows), reports an error because it not find the static libraryof boost::filesystem!! I thought it was enough to link it to my static library.... What's wrong? -- View this message in context: http://boost.2283326.n4.nabble.com/BOOST-fylesystem-and-staic-library-tp305… Sent from the Boost - Users mailing list archive at Nabble.com.

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[boost-users] Compiling boost (4-way) 1.44.0 on MAC
by Samir Kharchi 27 Nov '10

27 Nov '10

Hi, I am trying to build a static library version of boost 1.44.0 on MAC OSX 10.5.8 (XCode 3.1.4) using bjam for the architectures ppc, ppc64, x86_64,i386. It builts everything just fine but I never get all architectures included. There is always at least one architecture missing. My command is: bjam toolset=darwin architecture=combined link=static threading=multi variant=release address-model=32_64 I searched the web and didn´t find anything appropriate (most is for xcode 3.2 and leopard) so I am asking in here if anybody has a clue how to get this done. :-/ Thanks in advance Samir

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Novice build experience.
by Robert Jones 26 Nov '10

26 Nov '10

Although I've been using Boost for quite a while I am now building it from source for the first time (under Fedora13, 32 bit if it matters). I'm getting lots of messsages about things being skipped for lack of /usr/local/include/boost. As far as I can tell this is correct and normal - is that right? Thx, - Rob.

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[Bug Sprint] The November bug sprint starts tomorrow!
by Marshall Clow 26 Nov '10

26 Nov '10

The Boost bug sprint starts tomorrow Saturday, November 27, 2010 and runs through Sunday December 5th. The goal of the bug sprint is to make Boost better; the way we measure this is to look at the open tickets in the Trac system. In the last bug sprint (back in June), we closed over 200 tickets. However, in the past five months, the number of open tickets has crept back up, so that we once again have more than 900 open tickets. (the count was down under 800 at the end of the previous sprint). General information about the bug sprint is here: https://svn.boost.org/trac/boost/wiki/BugSprintNov2010 General information about how the Trac system works is here: https://svn.boost.org/trac/boost/wiki/TicketWorkflow Useful reports: https://svn.boost.org/trac/boost/report/1 -- full list of tickets https://svn.boost.org/trac/boost/report/18 -- ticket counts by owner https://svn.boost.org/trac/boost/report/19 -- ticket counts by component https://svn.boost.org/trac/boost/report/20 -- ticket counts by ticket type https://svn.boost.org/trac/boost/report/21 -- ticket counts by milestone -- Marshall

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thread warning ununsed variable
by Kraus Philipp 26 Nov '10

26 Nov '10

Hi, On Boost 1.45 I get a warning message in the condition_variable.hpp inline void condition_variable::wait(unique_lock<mutex>& m) { thread_cv_detail::lock_on_exit<unique_lock<mutex> > guard; detail::interruption_checker check_for_interruption(&internal_mutex,&cond); guard.activate(m); int const res=pthread_cond_wait(&cond,&internal_mutex); BOOST_ASSERT(!res); this_thread::interruption_point(); } the res variable isn't used (I compile the code with -O2 option) Have a nice day Phil

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