- Boost-users - lists.boost.org

Re: [Boost-users] [coroutine] Is there a max number of coroutines that can be created?
by José 15 Jul '14

15 Jul '14

1 0

[Boost Log] how to print source code file name and line number in boost log
by Pritesh Acharya 15 Jul '14

15 Jul '14

Boost version: 1.55.0 OS: Windows 8 IDE: Visual Studio 2010 Boost Module: Boost Log I'm using Boost Logging in my C++ application. I have been able to generate log of this format [2014-Jul-15 10:47:26.137959]: <debug> A regular message I want to be able to add source file name and line number where the log is generated, But i'm not able to do so. [2014-Jul-15 10:47:26.137959]: <debug> [filename:line_no] A regular message example: [2014-Jul-15 10:47:26.137959]: <debug> [helloworld.cpp : 12] A regular message Source Code: #include <boost/log/core.hpp>#include <boost/log/trivial.hpp>#include <boost/log/expressions.hpp>#include <boost/log/sinks/text_file_backend.hpp>#include <boost/log/utility/setup/file.hpp>#include <boost/log/utility/setup/common_attributes.hpp>#include <boost/log/sources/severity_logger.hpp>#include <boost/log/sources/record_ostream.hpp>#include <boost/log/expressions.hpp>#include <boost/log/support/date_time.hpp>#include <boost/log/attributes/attribute.hpp>#include <boost/log/attributes/attribute_cast.hpp>#include <boost/log/attributes/attribute_value.hpp>#include <boost/make_shared.hpp>#include <boost/property_tree/ptree.hpp> namespace logging = boost::log;namespace src = boost::log::sources;namespace sinks = boost::log::sinks;namespace keywords = boost::log::keywords; void init(){ logging::add_file_log ( keywords::file_name = "sample_%N.log", /*< file name pattern >*/ keywords::rotation_size = 10*1024*1204, /*< rotate files every 10 MiB... >*/ keywords::time_based_rotation = sinks::file::rotation_at_time_point(0, 0, 0), /*< ...or at midnight >*/ keywords::format = ( boost::log::expressions::stream << boost::log::expressions::format_date_time< boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d_%H:%M:%S.%f") << ": <" << boost::log::trivial::severity << "> " << boost::log::expressions::smessage ) );} int main(int, char*[]){ init(); logging::add_common_attributes(); using namespace logging::trivial; src::severity_logger< severity_level > lg; BOOST_LOG_SEV(lg, debug) << "A regular message"; return 0;}

1 0

TCP resolver creates TppWorkerThreads on windows only
by Chris Stankevitz 14 Jul '14

14 Jul '14

Hello, When I run the following code on windows, some threads are created, presumably by winsock. These threads are "named" _TppWorkerThread. This does not happen on linux. These threads do not stop when all the boost objects go out of scope, but I wish they did. Q1: Am I doing something wrong? Q2: Is there a boost way for me to stop these threads? Thank you, Chris int main() { { boost::asio::io_service DummyIoService; boost::asio::ip::tcp::resolver Resolver(DummyIoService); Resolver.resolve( boost::asio::ip::tcp::resolver::query("localhost", "3000")); } // At this point, there are three extra threads running: // // _TppWorkerThread@4 _ZwWaitForWorkViaWorkerFactory@8 // _TppWorkerThread@4 _ZwWaitForWorkViaWorkerFactory@8 // _TppWaiterpThread@4 _ZwWaitForMultipleObjects@20 return 0; }

2 2

[test] Bluegene/Q issue: sigaltstack
by Ewart Timothée 14 Jul '14

14 Jul '14

Dear All, I already posted on the boost.test user mailing list, but as my question was to technical they forward me their ( http://lists.boost.org/boost-testing/2014/07/7692.php ) I installed/compiled boost on the BG/Q (with gcc provided by IBM) but I am confronted to a issue, the framework crashed (compute node) due to a call to the system function sigaltstack. >From my previous post, a boost user suggests me to disable a macro into execution_monitor.ipp line 176 https://github.com/boostorg/test/blob/boost-1.55.0/include/boost/test/impl/… If I disable this macro the framework works well. Into Boost, this macro is defined between a !defined # if !defined(__CYGWIN__) && !defined(__QNXNTO__) # define BOOST_TEST_USE_ALT_STACK # endif Should we add a C++ macro provided by the compiled to disable this define ? I give a list of the macro of GCC for the BG/Q #define __DBL_MIN_EXP__ (-1021) #define __FLT_MIN__ 1.17549435e-38F #define __CHAR_BIT__ 8 #define _ARCH_PPCGR 1 #define __PPC64__ 1 #define __WCHAR_MAX__ 2147483647 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 1 #define __DBL_DENORM_MIN__ 4.9406564584124654e-324 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 1 #define __FLT_EVAL_METHOD__ 0 #define __unix__ 1 #define __DBL_MIN_10_EXP__ (-307) #define __FINITE_MATH_ONLY__ 0 #define __GNUC_PATCHLEVEL__ 6 #define __DEC64_MAX_EXP__ 385 #define __SHRT_MAX__ 32767 #define __LDBL_MAX__ 1.79769313486231580793728971405301e+308L #define _ARCH_PPC 1 #define __UINTMAX_TYPE__ long unsigned int #define __linux 1 #define __DEC32_EPSILON__ 1E-6DF #define __CHAR_UNSIGNED__ 1 #define __LDBL_MAX_EXP__ 1024 #define __linux__ 1 #define __SCHAR_MAX__ 127 #define __DBL_DIG__ 15 #define __SIZEOF_INT__ 4 #define __SIZEOF_POINTER__ 8 #define __USER_LABEL_PREFIX__ #define __STDC_HOSTED__ 1 #define __LDBL_HAS_INFINITY__ 1 #define __FLT_EPSILON__ 1.19209290e-7F #define __LDBL_MIN__ 2.00416836000897277799610805135016e-292L #define __DEC32_MAX__ 9.999999E96DF #define __SIZEOF_LONG__ 8 #define __DECIMAL_DIG__ 33 #define __gnu_linux__ 1 #define __LDBL_HAS_QUIET_NAN__ 1 #define __GNUC__ 4 #define __FLT_HAS_DENORM__ 1 #define __SIZEOF_LONG_DOUBLE__ 16 #define __BIGGEST_ALIGNMENT__ 16 #define __DBL_MAX__ 1.7976931348623157e+308 #define __DBL_HAS_INFINITY__ 1 #define __DEC32_MIN_EXP__ (-94) #define __LDBL_HAS_DENORM__ 1 #define __DEC128_MAX__ 9.999999999999999999999999999999999E6144DL #define __DEC32_MIN__ 1E-95DF #define __DBL_MAX_EXP__ 1024 #define __DEC128_EPSILON__ 1E-33DL #define __LONG_LONG_MAX__ 9223372036854775807LL #define __SIZEOF_SIZE_T__ 8 #define __PPC__ 1 #define __SIZEOF_WINT_T__ 4 #define __bg__ 1 #define __GXX_ABI_VERSION 1002 #define __FLT_MIN_EXP__ (-125) #define __DBL_MIN__ 2.2250738585072014e-308 #define __LONGDOUBLE128 1 #define __LP64__ 1 #define __DEC128_MIN__ 1E-6143DL #define __REGISTER_PREFIX__ #define __DBL_HAS_DENORM__ 1 #define __NO_INLINE__ 1 #define __FLT_MANT_DIG__ 24 #define __VERSION__ "4.4.6" #define __BIG_ENDIAN__ 1 #define __powerpc64__ 1 #define __DEC64_EPSILON__ 1E-15DD #define __DEC128_MIN_EXP__ (-6142) #define __powerpc__ 1 #define unix 1 #define __SIZE_TYPE__ long unsigned int #define __ELF__ 1 #define __FLT_RADIX__ 2 #define __LDBL_EPSILON__ 4.94065645841246544176568792868221e-324L #define __SIZEOF_PTRDIFF_T__ 8 #define __DEC32_SUBNORMAL_MIN__ 0.000001E-95DF #define __FLT_HAS_QUIET_NAN__ 1 #define __FLT_MAX_10_EXP__ 38 #define __LONG_MAX__ 9223372036854775807L #define __DEC128_SUBNORMAL_MIN__ 0.000000000000000000000000000000001E-6143DL #define __FLT_HAS_INFINITY__ 1 #define __unix 1 #define __DEC64_MAX__ 9.999999999999999E384DD #define __CHAR16_TYPE__ short unsigned int #define __DEC64_MANT_DIG__ 16 #define __DEC32_MAX_EXP__ 97 #define _BIG_ENDIAN 1 #define linux 1 #define __LDBL_MANT_DIG__ 106 #define __DBL_HAS_QUIET_NAN__ 1 #define __WCHAR_TYPE__ int #define __SIZEOF_FLOAT__ 4 #define __DEC64_MIN_EXP__ (-382) #define __FLT_DIG__ 6 #define __INT_MAX__ 2147483647 #define __LONG_DOUBLE_128__ 1 #define __FLT_MAX_EXP__ 128 #define __DBL_MANT_DIG__ 53 #define __DEC64_MIN__ 1E-383DD #define __WINT_TYPE__ unsigned int #define __SIZEOF_SHORT__ 2 #define __LDBL_MIN_EXP__ (-968) #define __LDBL_MAX_10_EXP__ 308 #define __DBL_EPSILON__ 2.2204460492503131e-16 #define _LP64 1 #define __SIZEOF_WCHAR_T__ 4 #define __DEC_EVAL_METHOD__ 2 #define __INTMAX_MAX__ 9223372036854775807L #define __FLT_DENORM_MIN__ 1.40129846e-45F #define _CALL_AIX 1 #define __bgq__ 1 #define __CHAR32_TYPE__ unsigned int #define __FLT_MAX__ 3.40282347e+38F #define __SIZEOF_DOUBLE__ 8 #define __FLT_MIN_10_EXP__ (-37) #define _CALL_AIXDESC 1 #define __INTMAX_TYPE__ long int #define __DEC128_MAX_EXP__ 6145 #define __GNUC_MINOR__ 4 #define __DEC32_MANT_DIG__ 7 #define __DBL_MAX_10_EXP__ 308 #define __LDBL_DENORM_MIN__ 4.94065645841246544176568792868221e-324L #define __STDC__ 1 #define __PTRDIFF_TYPE__ long int #define __DEC64_SUBNORMAL_MIN__ 0.000000000000001E-383DD #define _ARCH_PPC64 1 #define __DEC128_MANT_DIG__ 34 #define __LDBL_MIN_10_EXP__ (-291) #define __SIZEOF_LONG_LONG__ 8 #define __LDBL_DIG__ 31 #define __GNUC_GNU_INLINE__ 1 We may add one of this to the framework to have a correct execution Cheers, ++t Timothée Ewart, Ph. D. http://www.linkedin.com/in/tewart timothee.ewart(a)epfl.ch<mailto:timothee.ewart@epfl.ch>

4 6

boost::asio
by imran sheikh 14 Jul '14

14 Jul '14

hi, I used the following piece of code after following your suggestions. Iam new to boost and even multi-threading When I ran this piece of code on my machine I found that for every run 4 threads are only used out of the pool. As I have 4 cores in my machine. Is it so?? #include<iostream>#include<boost/asio.hpp>#include<boost/thread.hpp>boost::atomic_int thrd_gen(0);voiddowork(inti){thread_local inttid =++thrd_gen;std::cout <<"hello";std::cout <<" thread ID :"<<tid <<"\n";}intmain(){boost::asio::io_service ioservice;boost::thread_group group;boost::optional<boost::asio::io_service::work>work(boost::asio::io_service::work{ioservice});for(size_ti=0;i<boost::thread::hardware_concurrency();i++){group.create_thread(boost::bind(&boost::asio::io_service::run,&ioservice));}std::cout <<"in main thread size="<<group.size()<<std::endl;for(inti =0;i <=5;++i){for(inti=0;i<5;i++){ioservice.post(boost::bind(dowork,10));}boost::this_thread::sleep_for(boost::chrono::milliseconds(600));std::cout <<"waking up\n";}work.reset();// allow threads to exitgroup.join_all();// await proper thread shutdown } Also, my application is time-sensitive and I need to do some time measures. If I use sleep my results will be incorrect. So, please suggest an alternative way to get notified when all the threads finish without using sleep. Thanks for your time on this

2 2

Fw: boost::asio
by imran sheikh 14 Jul '14

14 Jul '14

On Saturday, 12 July 2014 11:10 AM, "boost-users-owner(a)lists.boost.org" <boost-users-owner(a)lists.boost.org> wrote: ----- Forwarded Message ----- To post messages to the Boost Users mailing list, you will need to subscribe this e-mail address via the Boost mailing list web page at: http://lists.boost.org/mailman/listinfo.cgi/boost-users You will need to take this step even if you intend to post only through GMane or some other news gateway. In this case, you may wish to edit your subscription options to turn off mail delivery. On Friday, 11 July 2014 11:00 PM, imran sheikh <s.imran0508(a)yahoo.com> wrote: hi all, i am using boost::asio:: ioservice for the multi-threading in c++. i got stuck ...please see and help. code is like this, discription: > i am creating threadpool using ioservice. > creating threads 100. > in while (which is 5 times)loop at a time i want to post(posting at do work) 5 threads. > then i do work reset and like this.. >i print thread-id also problems:: >threadpool size is 100. > but at a posting time it didn't taking the 5 threads..when i printed a id its same for 5 thread > so its not executing in parallel..why? > i want to post five threads at a time(different threads means thread id is different must)..from threapool..and like this for whole while loop rotation..?????????????????????????? void dowork(int i) { std::cout<<"hello"<<std::endl; cout<<" thread ID :"<<boost::this_thread::get_id(); } int main() { int ch; int i; boost::asio::io_service ioservice; boost::thread_group threadpool; auto_ptr<boost::asio::io_service::work> work(new boost::asio::io_service::work(ioservice)); for(i=0;i<100;i++) { threadpool.create_thread( boost::bind(&boost::asio::io_service::run, &ioservice)); } ch=0; while(ch <= 5) { ch++; cout<<"in main"<<boost::this_thread::get_id()<<endl; for(i=0;i<5;i++) { ioservice.post(boost::bind(dowork,10)); } std::cout<<"size="<<threadpool.size()<<std::endl; work.reset(); ioservice.reset(); ioservice.run(); } } please give me suggestion.i got stuck with it.

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Re: [Boost-users] [coroutine] Is there a max number of coroutines that can be created?
by José 12 Jul '14

12 Jul '14

2 1

1.56.0 beta 1 release candidates available for testing
by Marshall Clow 12 Jul '14

12 Jul '14

Release candidate files for 1.56.0 beta 1 are available at http://boost.cowic.de/rc/ As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. This helps ensure the candidates build OK before we push them out to SourceForge. The files (and associated md5s) are: MD5 (boost-1_56_0b1_rc1.7z) = a23e0b5f503c82970c9754dbc8324256 MD5 (boost-1_56_0b1_rc1.tar.bz2) = c6c8486dde4375896f302bdfe1fd3d2f MD5 (boost-1_56_0b1_rc1.tar.gz) = 1042e97a9f354b7187326fa1f9eb313e MD5 (boost-1_56_0b1_rc1.zip) = 984a70feac785d908d8f75ea9d8d2158 Since this is the first post-git release, we are expecting some teething pains with this release. Please test extensively. Thank you. --The release managers

2 1

[uuid] stale 1.55 source/build
by Michael Powell 12 Jul '14

12 Jul '14

Hello, I'm not 100% positive, I downloaded stale source and/or binary build of boost 1.55, supposedly, but I am finding that tickets which were reported to have been included in that version are not in the build. I'll retrace my steps to find where that build came from, but I seriously question whether this build included the latest 1.55 code. i.e. uuid fixes, which I am finding are still happening in the download: Error 1 error C4996: 'std::_Swap_ranges': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators' c:\program files (x86)\microsoft visual studio 12.0\vc\include\algorithm 925 1 xml and with reported fixes: https://svn.boost.org/trac/boost/attachment/ticket/9503/uuid.hpp This is not in the code that I have. i.e. typedef uint8_t value_type; typedef uint8_t& reference; typedef uint8_t const& const_reference; typedef uint8_t* iterator; typedef uint8_t const* const_iterator; typedef std::size_t size_type; typedef std::ptrdiff_t difference_type; versus: typedef uint8_t value_type; typedef std::array<value_type, static_size> data_type; typedef data_type::size_type size_type; typedef data_type::difference_type difference_type; typedef data_type::iterator iterator; typedef data_type::const_iterator const_iterator; typedef data_type::reference reference; typedef data_type::const_reference const_reference; in the reported patch. In two attempts to 1) build from source myself, 2) download read-built binaries, both have stale versions of source, without the reported patches. This is not the first time I've encountered such an issue, with the first being failure to build from source several weeks ago now at least. What with the Git submodule advances, could it be Git submodule(s) were not updated or something along those lines? Any thoughts? Recommendations where to find a reliable 1.55 build? Thank you... Best regards, Michael Powell

2 3

Re: [Boost-users] [coroutine] Is there a max number of coroutines that can be created?
by José 11 Jul '14

11 Jul '14

2 1