October 2008 - Boost-users - lists.preview.boost.org

Complie error: 'make_shared’ was not declared in this scope
by Michael Chen 14 Oct '08

14 Oct '08

Hi everyone I meet this error: "class.cpp:89: error: no matching function for call to 'make_shared(const boost::weak_ptr<zeitgeist::Core>&)' and the code is: *return make_shared(mCore);* I'm using gcc 4.3.1 and boost 1.36.0. I tried to solve the problem by using *shared_ptr<Core>(mCore)* but got a run-time error. Could someone help me?

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Re: [Boost-users] [boost] [thread_safe_signals][signals2] call for reviewers (review tentatively scheduled Nov 1st - Nov 10th)
by Stjepan Rajko 14 Oct '08

14 Oct '08

Hi Jeff, On Tue, Oct 14, 2008 at 6:11 AM, Jeff Flinn <TriumphSprint2000(a)hotmail.com> wrote: > > It might be more expeditious to directly paste Frank's points from his email > in the above thread. I've pasted them below. Is the intent to only review > these changes? > Thanks for pasting that in. I think any issue related to the library would be appropriate to raise during the review, even if it would apply to the current Boost.Signals library (reviews are good times to figure things out :-)). The original Boost.Signals review discussion can be found here: http://lists.boost.org/Archives/boost/2002/02/index.php I'm not sure how applicable that discussion would be now since I imagine the library has evolved quite a bit over the years, but it might be useful to revisit if we end up discussing things that apply to Boost.Signals as well as the proposed library. > Is there > any info on the cost of this thread safe implementation vs. the signals1 in > a single threaded application? > I assume that the following comparison was done for a single threaded app (using dummy_mutex), but if not I suspect the results would be an upper bound for the single threaded case: http://www.nabble.com/boost%3A%3Asignal-poor-performance-td19602422.html#a1… Best, Stjepan

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boost::asio::streambuf question
by Amit Sonawane 14 Oct '08

14 Oct '08

Hi, I am using Asio in Boost version 1.36.0 and I have a question regarding boost::asio::streambuf. Code extract: Class A { boost::asio::streambuf buf;//class member void Read() { boost::asio::async_read_until(socket, buf, boost::regex("\0101"),boost::bind(DoSomething,this,boost::asio::placehol ders::error,boost::asio::placeholders::bytes_transfered));//class function } void DoSomething(const boost::system::error_code& ec, std::size_t bytes_transferred)//class function { If(!ec && (bytes_transferred != 0)) { boost::asio::streambuf::const_buffers_type bufs = buf.data(); std::string s(boost::asio::buffers_begin(bufs),boost::asio::buffers_begin(bufs) + bytes_transferred); //Do something with the data in s; //Here I need to call async_read_until again, but buf still has the data read in the earlier call so, it calls the DoSomething handler again thus repeating //the process. Read(); } } }; My question is how do I clear the contents of buf before calling async_read_until again. I tried reading into a local variable but boost::asio::streambuf is noncopyable. Is there a better way to do what I am trying to do. Any help is greatly appreciated. Esta mensagem pode conter informação confidencial e/ou privilegiada. Se você não for o destinatário ou a pessoa autorizada a receber esta mensagem, não deverá utilizar, copiar, alterar, divulgar a informação nela contida ou tomar qualquer ação baseada nessas informações. Se você recebeu esta mensagem por engano, por favor avise imediatamente o remetente, respondendo o e-mail e em seguida apague-o. Agradecemos sua cooperação. This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, change, take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation.

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return type of boost::iostreams::stream<T>::read()
by Struebing, Axel, le-tex 14 Oct '08

14 Oct '08

I apologize, if i have missed something. Reading the documentation about boost::iostreams library I could not find the information which return type the boost::iostreams::stream's class is giving me calling read(). I searched through the headers and every read() found returns std::streamsize, which sounds reasonable to me. I was surprised, that the code below does not compile --------start code ---------- #include <boost/iostreams/stream.hpp> #include <boost/iostreams/device/file.hpp> int main(void){ boost::iostreams::stream<boost::iostreams::file_source> istr(std::string("in.pdf")); char *buffer = new char[10]; std::streamsize i = istr.read(buffer,10); return 0; } -------end code----------- and gives me: test.cpp:7: error: invalid conversion from ‘void*’ to ‘std::streamsize’ Could someone shed a light on me, please? Thanks in advance. kind regards Axel

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regression test result to html conversion
by Dirk Jagdmann 13 Oct '08

13 Oct '08

Hello Boosters, I've successfully ran the regression suite on my computer and now have a gigantic result.xml file. Is there a script or XSLT available somewhere which converts it into an easier to read txt or html file, so I can see which tests passed and failed? -- ---> Dirk Jagdmann ----> http://cubic.org/~doj -----> http://llg.cubic.org

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Representing of empty sequence
by Missing Rainbow 13 Oct '08

13 Oct '08

Hi All, I am trying to understand the implementation of mpl::vector. I have simplified greatly to help understand it. I am now trying to figure out how to represent an empty sequence. Here is what I have got: template <class T0> struct vector1 { typedef vector1 type; }; template <class T0, class T1> struct vector2 { typedef vector2 type; }; template <class T0, class T1, class T2> struct vector3 { typedef vector3 type; }; struct dummy; template <class T0 = dummy, class T1 = dummy, class T2 = dummy> struct vector; template<T0> struct vector : vector1<T0> {}; template <T0, T1> struct vector : vector2 <T0, T1> {}; template <T0, T1, T2> struct vector : vector3 <T0, T1, T2> {}; Examples: vector1<char>::type vector2<int, long>::type vector3<short, int, long>::type vector<char>::type vector<int, long>::type vector<bool, float, double>::type How to declare and make use of an empty sequence? Rgds, anna -- Flow: For Love of Water http://missingrainbow.blogspot.com/2008/09/flow-for-love-of-water.html

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Cannot build debug-only with bjam?
by Jason Nye 13 Oct '08

13 Oct '08

Hi All, We are a Visual C++ shop (using vs2005 currently) and I would like to build boost with _SECURE_SCL=0 for release and _SECURE_SCL=1 for debug. I see there are only two options for the bjam --build-type command line option: minimal (which is release) and complete (which is debug+release). I would like to run bjam twice: once for release (with _SECURE_SCL=0) and once for debug (with _SECURE_SCL=1). Is there any way to do this? Note: I am fine with building both dynamics and statics for each configuration. I tried -build-type=debug but this doesn't work. Thanks, Jason.

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try, catch with boost.asio acceptor
by Etienne Philip Pretorius 13 Oct '08

13 Oct '08

How would someone get this right? retry: try { boost::asio::local::stream_protocol::acceptor acceptor(m_service,endpoint); } catch (boost::system::system_error e) { if(e.code()==boost::system::errc::address_in_use) { std::remove("/tmp/someprogram.socket"); goto retry; } throw; } Etienne

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new trunk build problem: tr1/.svn
by Robert Mecklenburg 13 Oct '08

13 Oct '08

To try and test the latest serialization changes, I've done a trunk update and now I'm getting a new build error: time make install ./tools/jam/src/bin.linuxx86/bjam --user-config=user-config.jam --prefix=/home/mecklen/work/boost-install --exec-prefix=/home/mecklen/work/boost-install --libdir=/home/mecklen/work/boost-install/lib --includedir=/home/mecklen/work/boost-install/include --without-python --without-mpi install 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. 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. error: Unable to find file or target named error: 'boost/tr1/tr1/.svn' error: referred from project at error: '.' The file it is complaining about exists and has mode bits 755. My configure line looks like: ./configure --prefix=/home/mecklen/work/boost-install --without-libraries=python --without-libraries=mpi --without-icu I'm not much of a bjam guy. This configure and build worked about 10 days ago. Any suggestions would be greatly appreciated. Thanks, -- Robert

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Boost-1.36 with gcc stlport links against both libstlport_gcc.so and libstdc++.so.5
by Shetty, Diwakar 13 Oct '08

13 Oct '08

Thanks to Juergen Hunold's help, I was able to build Boost 1.36 on Linux-x86-32bit with gcc and stlport However, the boost lib seems to links against both "libstlport_gcc.so" and "libstdc++.so.5". See line 1 and line 3 below Should it not be linking only against "libstlport_gcc.so"?? ldd libboost_unit_test_framework-gcc32-mt-p-1_36.so Line 1: libstlport_gcc.so => /somepath/STLport-4.6.2/lib/libstlport_gcc.so (0xb74d9000) Line 2: librt.so.1 => /lib/tls/librt.so.1 (0xb74c5000) Line 3: libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0xb7412000) Line 4: libm.so.6 => /lib/tls/libm.so.6 (0xb73f0000) libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb73e6000) libpthread.so.0 => /lib/tls/libpthread.so.0 (0xb73d6000) libc.so.6 => /lib/tls/libc.so.6 (0xb729e000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000) Thanks, Diwakar (Extn. 64048) ============================================================================== Please access the attached hyperlink for an important electronic communications disclaimer: http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html ==============================================================================

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