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Re: [boost] SSL problem
by Raffaele Romito 07 Dec '07

07 Dec '07

Christopher Kohlhoff wrote:> What is the other end of the connection doing?> Can you send a small, complete program that shows the behaviour for me> to try. Thanks. I'm using VC 8 and when I "pause" the debugger looking at the callstack of the two threads I can see that they are waiting on WSARecv.Here it is the code that show the problem: #define BUFFER_SIZE 1024*1024#define SERVER_PORT 1234 class MySocket{public: MySocket(boost::asio::io_service &service, boost::asio::ssl::context &context) : m_socket(service, context) { } bool connect(const std::string &ip, int port) { boost::asio::ip::tcp::resolver resolver(m_socket.get_io_service()); boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(boost::asio::ip::tcp::endpoint(boost::asio::ip::address::from_string(ip), port)); boost::asio::ip::tcp::resolver::iterator endpoint_end; boost::system::error_code error = boost::asio::error::host_not_found; while(error && endpoint_iterator != endpoint_end) { m_socket.next_layer().close(); m_socket.next_layer().connect(*endpoint_iterator++, error); } return !error; } void handshake(bool client) { m_socket.handshake(client ? boost::asio::ssl::stream_base::client : boost::asio::ssl::stream_base::server); } bool read(void *data, size_t size) { return boost::asio::read(m_socket, boost::asio::buffer(data, size), boost::asio::transfer_all()) == size; } bool write(const void *data, size_t size) { return boost::asio::write(m_socket, boost::asio::buffer(data, size), boost::asio::transfer_all()) == size; } boost::asio::ssl::stream<boost::asio::ip::tcp::socket> m_socket;};void client_proc(){ try { boost::asio::io_service service; boost::asio::ssl::context ssl(service, boost::asio::ssl::context::sslv3_client); ssl.use_certificate_file("client.crt", boost::asio::ssl::context::pem); ssl.use_private_key_file("client.key", boost::asio::ssl::context::pem); MySocket socket(service, ssl); socket.connect("127.0.0.1", SERVER_PORT); socket.handshake(true); char *message = new char[BUFFER_SIZE]; memset(message, 'm', BUFFER_SIZE); socket.write(message, BUFFER_SIZE); delete message; } catch(std::exception &e) { OutputDebugString("client error: "); OutputDebugString(e.what()); OutputDebugString("\n"); }}void server_proc(){ try { boost::asio::io_service service; boost::asio::ssl::context ssl(service, boost::asio::ssl::context::sslv3_server); ssl.load_verify_file("ca.crt"); ssl.use_certificate_file("client.crt", boost::asio::ssl::context::pem); ssl.use_private_key_file("client.key", boost::asio::ssl::context::pem); MySocket socket(service, ssl); boost::asio::ip::tcp::acceptor acceptor(service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), SERVER_PORT)); acceptor.accept(socket.m_socket.next_layer()); socket.handshake(false); char *message = new char[BUFFER_SIZE]; memset(message, 0, BUFFER_SIZE); socket.read(message, BUFFER_SIZE); delete message; } catch(std::exception &e) { OutputDebugString("server error: "); OutputDebugString(e.what()); OutputDebugString("\n"); }} void main(){ boost::thread t1(&server_proc); boost::thread t2(&client_proc); t1.join(); t2.join();} _________________________________________________________________ Scarica GRATIS la versione personalizzata MSN di Internet Explorer 7! http://optimizedie7.msn.com/default.aspx?mkt=it-it

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constrained_value.hpp
by Joe Gottman 07 Dec '07

07 Dec '07

One implementation detail of the date_time library is the constrained_value template class (constrained_value.hpp). I think this class is useful enough that it should be part of boost's public interface (maybe part of the utility library). After 1.35 is released, how difficult would it be to move this into the public interface? Joe Gottman

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[test] runnning the debugger when an assertion fails
by Thorsten Ottosen 06 Dec '07

06 Dec '07

Hi Gennadiy, http://www.boost.org/libs/test/doc/usage/command_line.html states "If you got "memory access violation" message (or any other message indication fatal or system error) when you run you test, to get more information of error location add --catch_system_errors=no to the test run command line. Now run the test again and it will create a coredump you could analyze using you preferable debugger. Or run it under debugger in a first place and it will break at the point of failure." I tried adding --catch_system_errors=no to the run-command in bjam, and I tried specifying it manually on the command line. No luck. I'm using windows xp, and visual c++8. Is it not possible to break into the debugger from a unit-test? Thanks -Thorsten

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"To Be Determined" milestone
by David Abrahams 06 Dec '07

06 Dec '07

I am planning to remove the "To Be Determined" milestone since we now have a 1.36.0 milestone to which things can be assigned. Please let me know if there are strong objections. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com

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[Report] 99 failures on trunk (2007-12-06)
by Douglas Gregor 06 Dec '07

06 Dec '07

Boost regression test failures Report time: 2007-12-06T14:38:46Z This report lists all regression test failures on release platforms. Detailed report: http://boost.org/regression/trunk/developer/issues.html 99 failures in 19 libraries bimap (1) concept_check (1) dynamic_bitset (4) function_types (2) graph (4) interprocess (2) lambda (1) math (2) numeric/interval (6) python (7) range (10) regex (1) serialization (32) signals (1) spirit (10) statechart (4) test (4) thread (4) utility (3) |bimap| test_bimap_ordered: intel-linux-9.0 |concept_check| where: intel-linux-9.0 |dynamic_bitset| dyn_bitset_unit_tests3: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 dyn_bitset_unit_tests4: gcc-4.2.1 |function_types| fast_mem_fn_example: msvc-7.1 interface_example: msvc-7.1 |graph| all_planar_input_files_test: intel-linux-9.0 betweenness_centrality_test: gcc-4.2.1_linux_x86_64 floyd_warshall_test: gcc-4.2.1_linux_x86_64 matching_test: gcc-4.2.1_linux_x86_64 |interprocess| doc_intrusive: intel-linux-9.0 doc_managed_grow: intel-linux-9.0 |lambda| operator_tests_simple: msvc-7.1 |math| test_binomial_double: intel-linux-9.0 test_policy_2: intel-linux-9.0 |numeric/interval| mul: darwin-4.0.1 darwin-4.0.1 overflow: darwin-4.0.1 darwin-4.0.1 pi: darwin-4.0.1 darwin-4.0.1 |python| bases: intel-linux-9.0 exec: intel-linux-9.0 exec-dynamic: intel-linux-9.0 import_: intel-linux-9.0 pointee: intel-linux-9.0 pointer_type_id_test: intel-linux-9.0 upcast: intel-linux-9.0 |range| algorithm_example: intel-linux-9.0 const_ranges: intel-linux-9.0 extension_mechanism: intel-linux-9.0 iterator_pair: intel-linux-9.0 iterator_range: intel-linux-9.0 partial_workaround: intel-linux-9.0 reversible_range: intel-linux-9.0 std_container: intel-linux-9.0 string: intel-linux-9.0 sub_range: intel-linux-9.0 |regex| regex_regress_threaded: darwin-4.0.1 |serialization| test_demo_portable_archive: darwin-4.0.1 test_demo_portable_archive_dll: darwin-4.0.1 test_exported_binary_archive: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_binary_archive_dll: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_text_archive: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_text_archive_dll: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_text_warchive: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_text_warchive_dll: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_xml_archive: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_xml_archive_dll: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_xml_warchive: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 test_exported_xml_warchive_dll: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 |signals| dead_slot_test: intel-linux-9.0 |spirit| file_iterator_tests_debug: darwin-4.0.1 scanner_value_type_tests: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 scanner_value_type_tests_debug: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 switch_tests_eps_default: intel-linux-9.0 switch_tests_general_def: intel-linux-9.0 switch_tests_general_def_debug: intel-linux-9.0 |statechart| TransitionTestBoth: intel-linux-9.0 TransitionTestNative: intel-linux-9.0 TransitionTestNormal: intel-linux-9.0 TransitionTestRelaxed: intel-linux-9.0 |test| prg_exec_fail3: gcc-4.2.1 gcc-4.2.1 gcc-4.2.1_linux_x86_64 intel-linux-9.0 |thread| test_shared_mutex: gcc-4.2.1_linux_x86_64 test_shared_mutex_lib: gcc-4.2.1_linux_x86_64 test_shared_mutex_part_2: gcc-4.2.1_linux_x86_64 test_shared_mutex_part_2_lib: gcc-4.2.1_linux_x86_64 |utility| value_init_test: darwin-4.0.1 darwin-4.0.1 darwin-4.0.1

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Trac open bugs - by assignee
by Marshall Clow 06 Dec '07

06 Dec '07

[ 192 open bugs today, 196 yesterday ] If you are maintaining a library, and have not logged into the trac system at <http://svn.boost.org/trac/boost/>, please do so ASAP. Until you do that, no tickets can be assigned to you, and will remain under "None". Instructions on working with tickets can be found at: <http://svn.boost.org/trac/boost/wiki/TicketWorkflow> and a mapping of user names to "real names" can be found at: <http://svn.boost.org/trac/boost/report/16> Bug summary 19 dgregor 17 az_sw_dude 15 djowel 12 turkanis 12 doug_gregor 10 None 9 johnmaddock 9 grafik 9 dave 9 agurtovoy 6 vladimir_prus 6 jsiek 6 anthonyw 5 witt 4 pdimov 4 igaztanaga 4 bemandawes 3 jmaurer 3 danielw 2 urzuga 2 rogeeff 2 ramey 2 pavol_droba 2 niels_dekker 2 nasonov 2 matias 2 ebf 1 troyer 1 t_schwinger 1 speedsnail 1 shammah 1 samuel_krempp 1 nesotto 1 marshall 1 kaalus 1 hkaiser 1 guwi17 1 eric_niebler 1 dlwalker 1 aaron_windsor 1 <Blank> <Blank> 1307 [lambda] invalid boostbook None 1068 Mersenne twister disables streaming for Visual C++ None 1094 Finding the correct library to link (feature request for pkg-config support)h None 1222 lambda::ret<T> should declare result_type. None 1247 Typos in "boost/random/additive_combine.hpp"_ lines 68-69 None 1270 uniform_smallint doesn't compile with lagged_fibonacci random number generators None 1407 Boost is doesn't install on MacPorts using Leopard None 1423 MSVC uniform int workaround not required for VC++ 2008 None 1473 VC++ 2009 does not need workaround None 1482 boost::python::throw_error_already_set should be marked noreturn None 1493 SVN files making it through to install aaron_windsor 778 top-level configure is broken agurtovoy 1001 gcc 4.1.2 segfaults on mpl/test/apply.cpp agurtovoy 1051 MPL header ordering triggers bug agurtovoy 1099 unable to iterate through a "non-explicitly-declared" mpl::set agurtovoy 1215 Boost 1.34.1_ mpl: Wrong workaround detection using MinGW32 (or.hpp_ line #33) agurtovoy 1317 has_xxx randomly broken in msvc agurtovoy 1469 [mpl] nested typedef of set has two different meanings agurtovoy 1476 always<> is not nullary. agurtovoy 588 mpl::remove compile error with gcc 4.1.0 agurtovoy 640 documentation mistake anthonyw 1154 tss destruction segfaults in conjunction with dlopen/dlclose anthonyw 1168 [thread] tss crashes randomly anthonyw 1268 xtime_cmp changes to deal with overflow were reverted anthonyw 1470 Boost.Thread: Compilation errors with non-__cdecl calling convention anthonyw 876 xtime documentation incomplete anthonyw 881 errors when build with Apache stdcxx az_sw_dude 1028 typo in boost header: date_time/time_defs.hpp az_sw_dude 1078 from_iso_string cannot read the output from to_iso_string az_sw_dude 1098 Urgent libboost-date-time1.33.1 : bugs on ia64 ? az_sw_dude 1147 date_time library contains global #define ERROR az_sw_dude 1160 warning: month_format shadows a member of this az_sw_dude 1162 warning: ticks shadows a member of this az_sw_dude 1289 posix_time::time_facet forgets to pass a_ref argument to base class az_sw_dude 1299 change in typedef stringstream_type in format_date_parser.hpp causing compilation error az_sw_dude 1306 invalid docbook in date_period.xml az_sw_dude 1384 Linking problem with date_time library on Visual C++ 2008 Express az_sw_dude 1386 date_time documentation Jamfile breaks building of boost docs az_sw_dude 287 wrong usage of ios_base::narrow az_sw_dude 316 date_time type conversion warning az_sw_dude 604 from_ftime incorrectly processes FILETIME filled with zeros az_sw_dude 642 operator<< for gregorian::date_duration not found az_sw_dude 889 Insane Dependencies az_sw_dude 890 date_time library supports only the current dst rule bemandawes 1378 filesystem path invalid name for hidden files (LINUX) bemandawes 1389 filesystem::ostream << boost::format generates operator ambigious error (in MSVC++) bemandawes 1458 Darwin Tiger throws std::runtime_error: locale::facet::_S_create_c_locale name not valid bemandawes 752 directory_iterator doesn't work with catch danielw 1044 Argument pack inaccessable in a functions return type danielw 1054 Parameter takes an "infinite" amount of time to compile with the Intel compiler. danielw 1097 keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored dave 1010 linking boost.python on freebsd dave 1019 iterator_facade::pointer should be the return type of operator-> (DR 445) dave 1085 Python rules for compiling in Mac OS X dave 1179 [boost.python] can not export a union in VC2005sp1 dave 1181 [boost.python] can modify enum value dave 1387 Review / update docs to reflect changes dave 1460 Python classes with multiple bases are convertible only to the first class in the lists dave 865 Use of C++0x keyword as identifier dave 910 gcc strict-aliasing problems with python dgregor 1003 [iostreams] copy-paste error in typedefs for wchar multichar_filters dgregor 1139 [iostreams] Regex filter segfaults when zero matches found dgregor 1140 boost::iostreams linked_streambuf bug dgregor 1149 Minor doc error in basic_null_device dgregor 1164 Floyd Warshall broken with unsigned edge weights dgregor 1185 iostreams::direct_streambuf<T_Tr>::is_open always returns false if output iterator is not null dgregor 1192 [boostbook] problem when two files have the same name dgregor 1199 configure doesn't work with path containing whitespaces (MacOS X) dgregor 1232 mapped_file_source::is_open() is broken under windows dgregor 1310 [result_of] const-qualified function pointer doesn't work dgregor 1326 Unable to check graph isomorphism using LEDA adapter dgregor 1391 dominator_tree_test on Borland/CodeGear outputs overly long line dgregor 1394 Translate libs/graph/build/python/Jamfile to BBv2 dgregor 1395 Write Tests for Python Bindings dgregor 1416 Warnings from Boost.Function need suppression. dgregor 1499 xxx is not a member of 'boost::signals::detail::named_slot_map_iterator dgregor 556 Bundled graph properties dgregor 732 Johnson All-Pairs needs better "no path" information dgregor 736 Const correctness violation djowel 1170 Emit Warnings instead of # symbols in the syntax highlighter djowel 1171 Quickbook title output djowel 1172 non-utf djowel 1176 Space after inline code djowel 1206 Escaping from within code? djowel 1273 CR+LF newlines in position_iterator djowel 1276 spirit problem with _GLIBCXX_DEBUG djowel 1277 Closing section like [pre with } causes Quickbok to crash djowel 1280 sections in imported source files get put inside <para> elements in docbook output djowel 1281 Quickbook produces invalid BoostBook/DocBook XML djowel 1324 tuple should have a swap() that operates element-by-element djowel 1396 wrong result_of invocation around transform_view djowel 1436 [quickbook] inline code inside headings djowel 1484 Quickbook produces illegal docbook for some docinfo fields. djowel 1500 [Spirit/Phoenix] C4512 Compiler warnings from VC8 dlwalker 613 boost/crc.hpp uses non-standard conforming syntax doug_gregor 1021 [Graph][reverse_graph] Problem using reverse_graph adapter with an adapted user defined graph doug_gregor 1076 compile error: disconnecting struct with operator()() doesn't work in VS2005 SP1 doug_gregor 375 LEDA graph adaptors do not handle hidden nodes properly doug_gregor 402 random_vertex/random_edge are unnecessarily inefficient doug_gregor 403 Document copy_component doug_gregor 447 reverse_graph and constness of property maps doug_gregor 708 Dijkstra no_init version should not require VertexListGraph doug_gregor 733 Numbered headers don't work with "preferred" syntax doug_gregor 735 Fruchterman-Reingold grid performance can be improved doug_gregor 738 Memory leaks with signal::connect? doug_gregor 829 Implicit graph not implement doug_gregor 852 Problem with Boost and GCC 4.1 ebf 965 [doc] boost::variant tutorial - final example uses v1_v2 should be seq1_seq2 ebf 993 Variant should use least common multiple of alignments_ rather than maximum eric_niebler 1472 foreach test breaks VC++2009 grafik 1041 Cygwin requires PATH setting. grafik 1062 Cygwin install stage fails with combination of patches grafik 1322 trac rejects patch attachment as spam grafik 1417 Regresson tests hang in Darwin (Tiger) grafik 1430 Regression fails under Cygwin grafik 1433 Trac's spam detection rejects too many valid messages grafik 616 Boost Jam_ and non english directorys grafik 959 linking fails when Boost is compiled with STLport 5.1.* on Linux (names mismatch) grafik 986 Problem building Python modules on boost 1.34.0 guwi17 1502 Invalid matrix_indirect / vector_indirect construction with shortcuts hkaiser 1079 boost-1.34.0 fails to compile. concept checks not satisfied. igaztanaga 1080 boost::interprocess win32 global file mapping issue igaztanaga 1210 interprocess::barrier hangs during second use under linux (boost 1.33.1) igaztanaga 1231 interprocess_condition (emulated) hangs after notify_all(). igaztanaga 1390 Interpocess: managed shared memory failing completely under OS X jmaurer 351 Diff in state of mersenne_twister gen between GCC3.41 & CW9 jmaurer 599 uniform_01 copies engine instead of using a reference jmaurer 819 uniform_int<> with type's maximum availaible range error johnmaddock 1081 Empty string rejected as perl-style regex johnmaddock 1083 boost_regex 1.34.0 uses ICU library without linking to it johnmaddock 1314 Using SSE-intrinsics in VC8 causes static assert in type_with_alignment.hpp johnmaddock 1411 Fix BOOST_PARTIAL_SPECIALIZATION_EXPLICT_ARGS johnmaddock 1440 libs/config/test/link/Jamfile.v2 confuses process_jam_log johnmaddock 1446 POSIX API doesn't use C locale johnmaddock 1451 error: use of C99 long long integer constant johnmaddock 1455 gcc 4.3.0 requires main to take 0 or 2 arguments johnmaddock 1474 VC++ 2008 seems to trigger multiple inclusion of boost::hash jsiek 416 Spelling of Edmonds-Karp-Algorithm jsiek 575 Calling subgraph::global_to_local on a root graph jsiek 636 strange compiling problem for transitive_closure jsiek 815 remove_edge core dumps on self-circle jsiek 875 No iterator based constructor for adjacency_matrix jsiek 900 graphml reader namespace handling is broken kaalus 1184 property_tree assignment (operator) bug marshall 1252 [pool] severe overhead with unaligned sizes. matias 1406 Understanding the Tables outdated matias 1434 Boost.Preprocessor_ small fix for the documentation nasonov 1220 lexical_cast requires RTTI nasonov 754 boost::any - typeid comparison across shared boundaries nesotto 1464 boost_range_array unused in several array_size() functions niels_dekker 1459 value_initialized leaves data uninitialized_ when using Borland niels_dekker 1491 value_initialized leaves data uninitialized_ when using GCC pavol_droba 1152 rle_example fails pavol_droba 1385 begin must be boost-qualified pdimov 1106 shared_ptr<T> should not convert to shared_ptr<U> when T* doesn't convert to U* pdimov 1108 shared_ptr does not compile under g++ with -fno-rtti pdimov 1444 scoped_ptr::operator== should be equivalent to a.get()==b.get()_ but is currently !!a==!!b pdimov 997 error in boost::bind doc ramey 1038 "<" and ">" should be excaped in xml_oarchive ramey 1121 xml_archive_exception is missing seperate header file_ and documentation mismatch rogeeff 1383 signal.h features not found on Mac OS rogeeff 1489 BOOST_CHECK_CLOSE fails to compile with templated value type samuel_krempp 859 boost::format ignores a user defined locale shammah 386 boost::pool_allocator breaks with vector of vectors speedsnail 1138 Problems with TSS and static thread library t_schwinger 1100 Building boost.function_types fails cvs rev-1.1_ no chdir command in bash troyer 1457 boost/serialization/complex.hpp: double & should be double? turkanis 1002 [iostreams] close_impl<closable_tag> does not comply with spec turkanis 1033 iostreams::restrict doesn't work on an iostreams::file_source turkanis 1070 [iostreams]boost\iostreams\copy.hpp line80 copy_impl turkanis 525 problem with boost::iostreams when compiled with Visual C++ turkanis 699 Changing size of memory-mapped file on Windows turkanis 786 bug in iostreams/copy.hpp line 81 turkanis 791 iostreams::tee_filter is for output only turkanis 817 Performance problem in iostreams turkanis 822 Incorrect usage of bad_write()_ bad_seek() etc. turkanis 823 Seekable file_descriptor_source /sink? turkanis 824 BOOST_IOSTREAMS_HAS_LSEEK64 on Mac OS X turkanis 856 iostreams file_descriptor::write fails under Win32 urzuga 574 [boost::lambda] Compile error with libstdc++ debug mode urzuga 781 Lambda: (_1 + "y")(string("x")) Doesn't Compile vladimir_prus 1165 more quoting problems vladimir_prus 1274 Useless error message vladimir_prus 1275 boost::program_options::validation_error::what() is private vladimir_prus 1321 invalid docbook in tool documentation vladimir_prus 469 multitoken broken vladimir_prus 689 [program_options] Endless loop with long default arguments witt 1046 Boost.Python quickstart instructions mention nonexistent target witt 583 Fixes for build on IBM pSeries for AIX and Linux witt 834 Homepage regression links witt 957 The "Getting Started" page does not mention the stdlib option witt 973 zip_iterator has value_type == reference -- -- Marshall Marshall Clow Qualcomm, Inc. <mailto:mclow@qualcomm.com> The famous British scientist, Lord Kelvin, said: "When you measure what you are speaking about and express it in numbers, you know something about it, but when you cannot (or do not) measure it, when you cannot (or do not) express it in numbers, then your knowledge is of a meagre and unsatisfactory kind."

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[Boost.System] Porting to HP-UX PA_RISC.
by Jurko Gospodnetić 06 Dec '07

06 Dec '07

Hi. HP-UX PA_RISC is missing EOWNERDEAD and ENOTRECOVERABLE system error code constants required by the Boost System library. They are not critical to Boost System and are only converted to some Boost System constants as a convenience to the user. My guess is that they should not be used by Boost System unless the base OS defines them. Tested with the Boost System library distributed with the Boost ASIO 1.38 release. [This is related to our todays posting (PA_RISC HP-UX 11.11 port) on the Boost ASIO list.] Hope this helps. Best regards, Jurko Gospodnetić

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Re: [boost] [dynamic_bitset] bug in to_ulong() in dynamic_bitset.hpp
by Boris Gubenko 06 Dec '07

06 Dec '07

Committed to trunk. Should I merge the fix into release branch? Thanks, Boris ----- Original Message ----- From: "Boris Gubenko" <Boris.Gubenko(a)hp.com> To: <boost(a)lists.boost.org> Cc: "Boris Gubenko" <Boris.Gubenko(a)hp.com> Sent: Tuesday, December 04, 2007 8:17 AM Subject: Re: [boost] [dynamic_bitset] bug in to_ulong() in dynamic_bitset.hpp > Markus Schoepflin wrote: >> I don't think that any of the authors of dynamic_bitset is still around, >> so there probably won't be any objections. I for one would welcome the >> fix. > > I'll wait a couple of days, to let people express opinion, and, then, > will commit the fix to trunk. > > Thanks, > Boris >

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[bind] performance tuning for a bad compiler
by Michael Marcin 05 Dec '07

05 Dec '07

I'm trying to make local modifications to bind to improve the code generated the compiler I have to use. I have written this small test file: //////////////////////////////// #include <boost/bind.hpp> class tester { public: struct value_type { float x, y, z; }; typedef const value_type& const_reference; value_type test( const value_type& a ); }; tester::value_type test_bind( tester& t, tester::const_reference x ) { return boost::bind( &tester::test, &t, _1 )( x ); } struct handspun { handspun( tester& t ) : m_t(t) {} tester::value_type operator()( tester::const_reference x ) { return m_t.test(x); } tester& m_t; }; tester::value_type test_handspun( tester& t, tester::const_reference x ) { return handspun(t)(x); } tester::value_type test_unrolled( tester& t, tester::const_reference x ) { return t.test( x ); } //////////////////////////////// Checking the generated assembly this code generates essentially the same code for test_bind and test_unrolled under VC8. Under the compiler I have to use (RVCT 2.2 sp1) however, it generates the following code. _Z9test_bindR6testerRKNS_10value_typeE PROC PUSH {lr} LDR r3,|L1.152| LDR r12,|L1.156| MOV lr,r2 LDM r3,{r2,r3} ; <Anon1>, <Anon1> SUB sp,sp,#0x2c LDRB r12,[r12,#0] STR r2,[sp,#0xc] STR r1,[sp,#8] ADD r2,sp,#0xc STR r12,[sp,#0x1c] STR r3,[sp,#0x10] STR r1,[sp,#0x14] LDM r2,{r2,r3,r12} ADD r1,sp,#0x20 STM r1,{r2,r3,r12} MOV r1,#0 LDR r3,[sp,#0x24] STR r1,[sp,#0x18] STR lr,[sp,#0x14] LDR r1,[sp,#0x28] TST r3,#1 LDRNE r12,[sp,#0x20] ADD r1,r1,r3,ASR #1 LDRNE r3,[r1,#0] BICNE r12,r12,#3 LDRNE r3,[r3,r12] LDREQ r3,[sp,#0x20] MOV r2,lr BLX r3 ADD sp,sp,#0x2c POP {pc} ENDP _Z13test_handspunR6testerRKNS_10value_typeE PROC PUSH {r3,lr} STR r1,[sp,#0] BL _ZN6tester4testERKNS_10value_typeE POP {r12,pc} ENDP _Z13test_unrolledR6testerRKNS_10value_typeE PROC B _ZN6tester4testERKNS_10value_typeE ENDP AREA ||.constdata||, DATA, READONLY, ALIGN=2 ||.constdata$1|| ||<Anon1>|| DCD _ZN6tester4testERKNS_10value_typeE DCD 0x00000000 I want to use bind in some performance sensitive areas because I don't want to have to get all the details of writing my functors or algorithms right since Boost and STL have already done that for me. Unless I can coerce my compiler into generating better code I'll have no choice but to abandon bind for this project. It isn't very easy for me to follow the bind sources. Does anyone have any hints on where I might start looking? Thanks, Michael Marcin

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Input archive loads seem to corrupt shared character std::strings
by Chuck Bear 05 Dec '07

05 Dec '07

Folks, We were recently tracking down some weirdness in our application, and think it may interest other users of boost archives. In essence, we are using the std::string library that comes with gcc 4.x, which reference counts the underlying characters. The iarchive loads seem to corrupt these characters if they are shared with other std::string instances. Here is a paraphrased example of what we were doing. // First, we have a string instance static std::string defaultStringValue = "defaultValue"; // Next we make a class that uses this default to initialize a member in its base constructor class A { public: std::string member; A() : member(defaultStringValue); template<class Archive> void serialize(Archive & ar, const unsigned int serializer_version) { ar & member; } } What we find happening is that if you deserialize an instance of A, the defaultStringValue *can* get clobbered (this has a bit to do with the length of the underlying value, as to whether the characters get clobbered or not). The scenario goes something like this: 1. Create an instance of A, this member will get a reference to the underlying "defaultValue" characters. 2. Load the instance of A from an archive that has a different value of member (the same length, or maybe shorter. If you test this, try something like "eefaultValue"). 3. This seems to mess up the value of defaultStringValue, you can print it out and see. Inspection of the code reveals the following is happening (both in 1.34 and HEAD): text_iarchive_impl<Archive>::load(std::string &s) { std::size_t size; * this->This() >> size; // skip separating space is.get(); // borland de-allocator fixup #if BOOST_WORKAROUND(_RWSTD_VER, BOOST_TESTED_AT(20101)) if(NULL != s.data()) #endif s.resize(size); is.read(const_cast<char *>(s.data()), size); // <== This looks suspect } Basically, data() is const because of the reference counting. Doing this const_cast and modification causes other strings that share the ref counted characters to be corrupted. We have been applying the following patch to our production version of boost (1.34.0), to work around this issue. Basically, it makes its own temp string and then does the assignment. diff -du -r boost_1_34_0/boost/archive/impl/basic_binary_iprimitive.ipp boost_1_34_0.my/boost/archive/impl/basic_binary_iprimitive.ipp --- boost_1_34_0/boost/archive/impl/basic_binary_iprimitive.ipp 2006-02-09 01:58:07.000000000 -0500 +++ boost_1_34_0.my/boost/archive/impl/basic_binary_iprimitive.ipp 2007-12-03 18:05:43.000000000 -0500 @@ -85,8 +85,9 @@ template<class Archive, class Elem, class Tr> BOOST_ARCHIVE_OR_WARCHIVE_DECL(void) -basic_binary_iprimitive<Archive, Elem, Tr>::load(std::string & s) +basic_binary_iprimitive<Archive, Elem, Tr>::load(std::string & res_s) { + std::string s; std::size_t l; this->This()->load(l); // borland de-allocator fixup @@ -96,6 +97,9 @@ s.resize(l); // note breaking a rule here - could be a problem on some platform load_binary(const_cast<char *>(s.data()), l); + + // Respect other references to the chars by assigning result string + res_s = s; } #ifndef BOOST_NO_CWCHAR @@ -113,8 +117,9 @@ #ifndef BOOST_NO_STD_WSTRING template<class Archive, class Elem, class Tr> BOOST_ARCHIVE_OR_WARCHIVE_DECL(void) -basic_binary_iprimitive<Archive, Elem, Tr>::load(std::wstring & ws) +basic_binary_iprimitive<Archive, Elem, Tr>::load(std::wstring & res_ws) { + std::wstring ws; std::size_t l; this->This()->load(l); // borland de-allocator fixup @@ -124,6 +129,9 @@ ws.resize(l); // note breaking a rule here - is could be a problem on some platform load_binary(const_cast<wchar_t *>(ws.data()), l * sizeof(wchar_t) / sizeof(char)); + + // Respect other references to the chars by assigning result string + res_ws = ws; } #endif diff -du -r boost_1_34_0/boost/archive/impl/text_iarchive_impl.ipp boost_1_34_0.my/boost/archive/impl/text_iarchive_impl.ipp --- boost_1_34_0/boost/archive/impl/text_iarchive_impl.ipp 2005-12-11 01:12:52.000000000 -0500 +++ boost_1_34_0.my/boost/archive/impl/text_iarchive_impl.ipp 2007-12-03 17:56:04.000000000 -0500 @@ -42,8 +42,9 @@ template<class Archive> BOOST_ARCHIVE_DECL(void) -text_iarchive_impl<Archive>::load(std::string &s) +text_iarchive_impl<Archive>::load(std::string &res_s) { + std::string s; std::size_t size; * this->This() >> size; // skip separating space @@ -54,6 +55,9 @@ #endif s.resize(size); is.read(const_cast<char *>(s.data()), size); + + // Respect other references to the chars by assigning result string + res_s = s; } #ifndef BOOST_NO_CWCHAR @@ -74,8 +78,9 @@ #ifndef BOOST_NO_STD_WSTRING template<class Archive> BOOST_ARCHIVE_DECL(void) -text_iarchive_impl<Archive>::load(std::wstring &ws) +text_iarchive_impl<Archive>::load(std::wstring &res_ws) { + std::wstring ws; std::size_t size; * this->This() >> size; // borland de-allocator fixup @@ -86,6 +91,9 @@ // skip separating space is.get(); is.read((char *)ws.data(), size * sizeof(wchar_t)/sizeof(char)); + + // Respect other references to the chars by assigning result string + res_ws = ws; } #endif // BOOST_NO_STD_WSTRING diff -du -r boost_1_34_0/boost/archive/impl/text_wiarchive_impl.ipp boost_1_34_0.my/boost/archive/impl/text_wiarchive_impl.ipp --- boost_1_34_0/boost/archive/impl/text_wiarchive_impl.ipp 2005-07-02 01:52:14.000000000 -0400 +++ boost_1_34_0.my/boost/archive/impl/text_wiarchive_impl.ipp 2007-12-03 18:05:07.000000000 -0500 @@ -79,8 +79,10 @@ #ifndef BOOST_NO_STD_WSTRING template<class Archive> BOOST_WARCHIVE_DECL(void) -text_wiarchive_impl<Archive>::load(std::wstring &ws) +text_wiarchive_impl<Archive>::load(std::wstring &res_ws) { + std::wstring ws; + std::size_t size; * this->This() >> size; // skip separating space @@ -93,6 +95,9 @@ ws.resize(size); // note breaking a rule here - is this a problem on some platform is.read(const_cast<wchar_t *>(ws.data()), size); + + // Respect other references to the chars by assigning result string + res_ws = ws; } #endif Curious if anyone has thoughts on the matter... Regards, Chuck

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