June 2008 - Boost - lists.preview.boost.org

Trac open bugs - by assignee
by Marshall Clow 24 Jun '08

24 Jun '08

[ 310 open bugs today, 306 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 40 djowel 30 dgregor 28 az_sw_dude 21 grafik 21 dave 17 bemandawes 15 vladimir_prus 15 agurtovoy 12 no-maintainer 12 jsiek 8 rogeeff 7 johnmaddock 6 anthonyw 6 None 5 samuel_krempp 5 kaalus 5 igaztanaga 5 danieljames 4 witt 4 nasonov 4 ebf 3 turkanis 3 troy 3 ramey 3 nesotto 3 danielw 2 shammah 2 marshall 2 jmaurer 2 hkaiser 2 gmelquio 2 garcia 1 urzuga 1 t_schwinger 1 speedsnail 1 pdimov 1 pavol_droba 1 matias 1 jano_gaspar 1 guwi17 1 fcacciola 1 dlwalker 1 andreas_huber69 1 aaron_windsor 1 <Blank> <Blank> 1750 Autolink library name not in sync with actually build lib None 1736 Headers containing non ASCII characters cause MS VC to issue warning 4819 in some locales None 1907 name of library files on mingw None 1927 MacOS (Darwin) should use the -headerpad_max_install_name option None 1990 xpressive: passing temporary regex to sregex_token_iterator causes runtime assertion None 2003 1_35_0 tar.gz file incomplete None 2004 [exception] 'hex' : is not a member of 'std' aaron_windsor 1622 Adjacency list needs to handle self-edges correctly agurtovoy 1001 gcc 4.1.2 segfaults on mpl/test/apply.cpp agurtovoy 1051 MPL header ordering triggers bug 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 1528 g++ 4.3.0 reports error because of redeclaration of next agurtovoy 1549 Boost.MPL: 'index_of' algorithm is not documented agurtovoy 1568 duplicate include guards agurtovoy 1900 Missing documentation for mpl::print in the MPL library agurtovoy 1916 [mpl] MPL_HAS_XXX_TRAIT_DEF bug in MSVC71 agurtovoy 1992 boost::mpl::zip_view does not support use as a metafunction with ::type agurtovoy 2031 PDF version of MPL reference manual is out-of-date agurtovoy 2041 MPL: more comprehensive test coverage for "fail" situations requiring diagnostics agurtovoy 2042 map insert does not work after an erase in the non-typeof implementation andreas_huber69 1771 Statechart TOC mangled. anthonyw 1154 tss destruction segfaults in conjunction with dlopen/dlclose anthonyw 1470 Boost.Thread: Compilation errors with non-__cdecl calling convention anthonyw 1825 thread.hpp injects windows.h and breaks user application. anthonyw 1826 Auto detection of threadapi and target-os broken under cygwin gcc anthonyw 1867 Missing member functions in shared_mutex (win32) anthonyw 2038 Missing include in tss.hpp 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 1524 format_date_parser.hpp(221) : cannot convert parameter 1 az_sw_dude 1574 operator<< for boost::posix_time::ptime ignores ostream flags az_sw_dude 1674 date_time::date_formatting.hpp: incorrectly formats year using global locale az_sw_dude 1695 add correct namespace to class to fix compilation bug az_sw_dude 1726 boost/date_time/posix_time/time_formatters.hpp incorrectly formats fractional seconds using global locale az_sw_dude 1740 date_time includes <windows.h> az_sw_dude 1788 local_time::local_time_period streaming operators not implemented az_sw_dude 1859 boost::gregorian::to_tm() doesn't fill in tm_zone on Mac OS X az_sw_dude 1878 Documention Corrections - Various date_time Pages az_sw_dude 1903 [date_time] - 1.34+ c_local_adjustor derefs null pointer for dates >2038 az_sw_dude 1933 special_values not found when compiling date_time/time.hpp az_sw_dude 1934 iterator reference zero when reading time zone [with patch] 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 1578 bug in readdir_r_simulator() in a multi-threaded environment bemandawes 1583 Serious flaw in boost::filesystem filename handling (opensuse) bemandawes 1606 filesystem/src/exception.cpp doesn't build with gcc bemandawes 1613 Link Errors against file_system on OS X with Intel Version 10.1 C++ compilers bemandawes 1682 path_traits needs imbue() bemandawes 1701 boost::filesystem::remove_all - segmentation fault with wpath on Linux bemandawes 1711 Boost Serialization export facility broken on gcc 4.1_ 4.2 bemandawes 1767 missing file: boost/filesystem/cerrno.hpp bemandawes 1840 name check functions have different behavior wrt empty string bemandawes 1876 portable_file_name() returns true for '.' and '..' bemandawes 1962 Doesn't measure wall clock time bemandawes 1971 remove_all is not documented bemandawes 1972 boost::filesystem::remove() throws on self referenced symlinks bemandawes 752 directory_iterator doesn't work with catch danieljames 1554 When BOOST_HASH_NO_EXTENSIONS is defined hash doesn't support new string types. danieljames 1555 When BOOST_HASH_NO_EXTENSIONS is defined hash doesn't support boost::system::error_code danieljames 1742 Some bugs in http://www.boost.org/doc/libs/1_35_0 danieljames 1743 Documentation has incorrect Build & Link settings for some libraries danieljames 1923 Unordered move implementation doesn't work in Borland. 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 danielw 1966 Need VC8 workaround 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 1482 boost::python::throw_error_already_set should be marked noreturn dave 1516 [python] Failing VC9 regression tests dave 1599 [python] '_set_se_translator': identifier not found dave 1697 [utility][noncopyable] ADL barrier broken by msvc-9.0 dave 1730 No debug libs on Windows by default dave 1851 Issue with proxies and rvalues dave 1860 zip_iterator::value_type should not be reference dave 1887 [doc] input_iterator_archetype is not a valid InputIterator dave 1890 Missing parameters in example code dave 1931 Boost.Python headers won't compile with GCC 4.3 dave 1952 The operation static_cast<std::string>(boost::python::extract<std::string>(...)) crashes Python. Seems to create reference counting problem. dave 2016 wrong default arguments in boost/python/exec.hpp dave 865 Use of C++0x keyword as identifier dave 910 gcc strict-aliasing problems with python dgregor 1009 Improper overflow handling in shortest paths algorithms dgregor 1021 [Graph][reverse_graph] Problem using reverse_graph adapter with an adapted user defined graph dgregor 1076 compile error: disconnecting struct with operator()() doesn't work in VS2005 SP1 dgregor 1164 Floyd Warshall broken with unsigned edge weights dgregor 1192 [boostbook] problem when two files have the same name dgregor 1199 configure doesn't work with path containing whitespaces (MacOS X) dgregor 1310 [result_of] const-qualified function pointer doesn't work dgregor 1322 trac rejects patch attachment as spam dgregor 1326 Unable to check graph isomorphism using LEDA adapter dgregor 1391 dominator_tree_test on Borland/CodeGear outputs overly long line dgregor 1630 gcc-4.3: adjacency_list.hpp includes deprecated header dgregor 1910 function::swap should avoid doing memory allocations dgregor 1943 (minor) configuring with header-only libraries. dgregor 1945 Update CMake configuration introduction for CMake 2.6.0 dgregor 1986 Missing IncidenceGraph requirement in topological_sort docs dgregor 1994 headers out of order somewhere in function/functional dgregor 2005 References to the old CVS archive_ instead of the current Subversion one dgregor 375 LEDA graph adaptors do not handle hidden nodes properly dgregor 402 random_vertex/random_edge are unnecessarily inefficient dgregor 403 Document copy_component dgregor 447 reverse_graph and constness of property maps dgregor 556 Bundled graph properties dgregor 708 Dijkstra no_init version should not require VertexListGraph dgregor 732 Johnson All-Pairs needs better "no path" information dgregor 733 Numbered headers don't work with "preferred" syntax dgregor 735 Fruchterman-Reingold grid performance can be improved dgregor 736 Const correctness violation dgregor 738 Memory leaks with signal::connect? dgregor 829 Implicit graph not implement dgregor 852 Problem with Boost and GCC 4.1 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 djowel 1570 Some boost headers aren't ready for gcc 4.3 djowel 1600 duplicate include guard djowel 1601 distane of boost::tuple djowel 1607 Tuple Library Documentation Changes djowel 1610 [MSVC/STLport] [tree/common.hpp] Standard library requirements violation(incomplete type as vector parameter) djowel 1614 vector workaround needed for MSVC9 djowel 1617 spirit gcc-4.3 fix djowel 1619 [Fusion] C4512 warnings from VC9 (Visual Studio 2008) djowel 1651 incorrect typedefs in examples djowel 1763 wrong AST when parser_tag==0 djowel 1764 wrong AST when parser_tag==0 djowel 1844 Quickbook matches forward slashes (for italics) with slashes in links djowel 1864 [Documentation]There is no documentation for repetivive_view djowel 1872 [Spirit2] 'assignment operator could not be generated' warnings from VC9 djowel 1892 boost::spirit::static_ causes link error (using wave) djowel 1893 Documentation Corrections to map.html djowel 1894 fusion\support\tag_of.hpp_ boost::fusion::traits djowel 1920 lexical_cast with tuple target fails_ because of cleared skipws flag djowel 1953 spirit doesn't use quickbook proper djowel 1997 missing include in spirit 'classic' header. djowel 2014 real_p parser produces numerically different results from iostream input operator djowel 2017 leaf_node_d matches leading skip tokens djowel 2034 Problem with nesting templates with same parameter names djowel 2035 Can't make template for a link djowel 2036 Crash with some invalid nested templates specification dlwalker 613 boost/crc.hpp uses non-standard conforming syntax ebf 1507 [variant] C4512 warnings from VC8.0 ebf 1548 [variant][docs]typo: formal arg_ operand_ should be v in times_two arglist ebf 1654 recursive variants do not handle nested variants correctly. ebf 993 Variant should use least common multiple of alignments_ rather than maximum fcacciola 1666 Visualizer for boost::optional garcia 1581 Boost.MultiArray: Resizing bug if the index is not 0-based garcia 1741 Review schedule out of date gmelquio 1886 Typo in Interval documentation gmelquio 1944 Interval library pow function doesn't work with mpq_class and similar grafik 1041 Cygwin requires PATH setting. grafik 1406 Understanding the Tables outdated grafik 1417 Regresson tests hang in Darwin (Tiger) grafik 1430 Regression fails under Cygwin grafik 1512 Broken link to vacpp in bjam docs. grafik 1576 cannot read non-ASCII output messages grafik 1577 Some commands don't work because hStdInput == 0 grafik 1663 build.bat cannot set/reset ERRORLEVEL grafik 1733 Website layout overlays on IE7 grafik 1735 [website] Wrong HTML on main documentation page. grafik 1738 Boost Jam details and download link grafik 1739 Search box and Google link grafik 1744 [getting started] No information on building static libraries with bjam under Windows grafik 1753 Python docs: bad link to the Jamroot grafik 1776 Documentation page renders incorrectly in Safari 3.1 on OS X grafik 1906 Trac site too hard to find grafik 1930 The userman.pdf boost-build documentation is outdated grafik 2020 People grid stretches images 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 1974 ambiguous call to ref in vector_of_vector.hpp when using bind.hpp hkaiser 1079 boost-1.34.0 fails to compile. concept checks not satisfied. hkaiser 1670 wave almost unusably slow on real-world input igaztanaga 1080 boost::interprocess win32 global file mapping issue igaztanaga 1210 interprocess::barrier hangs during second use under linux (boost 1.33.1) igaztanaga 1390 Interpocess: managed shared memory failing completely under OS X igaztanaga 1634 boost::interprocess::vector cannot contain volatile int igaztanaga 1975 windows_shared_memory implicitly commits virtual memory jano_gaspar 1852 copy constructor does not copy capacity jmaurer 351 Diff in state of mersenne_twister gen between GCC3.41 & CW9 jmaurer 599 uniform_01 copies engine instead of using a reference johnmaddock 1081 Empty string rejected as perl-style regex johnmaddock 1451 error: use of C99 long long integer constant johnmaddock 1940 broken links johnmaddock 1988 Boost.Config macros badly added. johnmaddock 2011 Is there a way to extract the member type of a (data) member pointer? johnmaddock 2022 Found crash of boost for characters ' * ' _ ' a* ' _ & " abc** " johnmaddock 2033 STLPort & fpclassify compatibility issue jsiek 1531 segfault in dynamic_bitset::reference assign operator jsiek 1540 Poisson distribution very slow for large mean (and may also overflow). jsiek 1755 Boost.tokenizer is broken for wide characters - patch attached jsiek 1798 met an error using boost::tokenizer in multi-times in vs2005_ unicode jsiek 1888 Why doesn't InputIterator require that reference is convertible to value_type? jsiek 1909 Documentation is out of sync jsiek 2037 concept_check fails with types declared in unnamed namespace 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 kaalus 1604 property_tree xml parser doesn't compile with gcc kaalus 1678 Boost.property_tree::read_xml does not parse UNICODE file with BOMs kaalus 1914 Boost.PropertyTree JSON parser in SVN trunk does not compile with Spirit2 changes kaalus 1955 gcc-4.x and gcc-4.3 fixes marshall 1252 [pool] severe overhead with unaligned sizes. marshall 1854 Interval is not available as a component in the SVN system matias 2018 Error in the documentation chapter "Runtime parameters reference" nasonov 1220 lexical_cast requires RTTI nasonov 1847 Can't compile without <locale> header_ boost::lexical_cast problem nasonov 2045 lexical_cast<std::string> of short unsigned produces warnigns with g++ and -Wsign-promo nasonov 754 boost::any - typeid comparison across shared boundaries nesotto 1754 Illegal HTML in range docs. nesotto 1785 assign::list_of works poorly with class constructors nesotto 1795 [ptr_container] minor documentation typo no-maintainer 1068 Mersenne twister disables streaming for Visual C++ no-maintainer 1222 lambda::ret<T> should declare result_type. no-maintainer 1270 uniform_smallint doesn't compile with lagged_fibonacci random number generators no-maintainer 1515 [lambda] C4512 warnings from VC8.0 no-maintainer 1544 uniform_01 w/ref template param causes ref to ref error no-maintainer 1546 Method boost::random::uniform_int::operator()(engine_ value) is missing no-maintainer 1572 [lambda] smart pointer const-ness affects its contents no-maintainer 1632 Default Interval rounding policies incomplete no-maintainer 1691 [Random] Brokem MSVC workaround no-maintainer 1856 minstd_rand returning different values in 1.35.0 than in 1.34.1 no-maintainer 781 Lambda: (_1 + "y")(string("x")) Doesn't Compile no-maintainer 819 uniform_int<> with type's maximum availaible range error pavol_droba 1152 rle_example fails pdimov 2000 boost/detail/spinlock_sync.hpp incorrectly included for Intel C++ on Linux ramey 1708 Can't serialize class with private destructor ramey 1836 bug in serializing wide character strings ramey 1973 [gcc43] Backport trunk fixes into release branch rogeeff 1383 signal.h features not found on Mac OS rogeeff 1644 Boost.Test missing documentation file BOOST_CHECK_CLOSE_FRACTION.html rogeeff 1676 Dead links on Boost.Test example documentation. rogeeff 1723 No subprocess can be started in init_unit_test_suite rogeeff 1746 Online documentation for 1.35.0 is out of date for current lib version rogeeff 1839 Test fails if child process exits with non-zero code rogeeff 1866 Typos in Boost Test documentation rogeeff 1869 Typo in Unit Test Framework documentation samuel_krempp 1699 Compile warning about initialization order. samuel_krempp 1801 Typo in documentation. samuel_krempp 2015 boost::format::operator% does not work with anonymous types inside a namespace samuel_krempp 2024 boost::format("%p") % (uint8_t *) str is not like printf("%p"_ str) samuel_krempp 859 boost::format ignores a user defined locale shammah 290 perfomance: memory cleanup for pool takes too long shammah 386 boost::pool_allocator breaks with vector of vectors speedsnail 1138 Problems with TSS and static thread library t_schwinger 1653 wave executable erroneously required for build of function_types lib troy 1981 tests when ceratain build variants turned off troy 2043 windows build hangs in build slave mode troy 2044 windows debug popups in build slave mode turkanis 1579 gzip compressor should model DualUseFilter turkanis 1649 Fix definition of JavaScript menu to avoid long chains of functions turkanis 1656 Consider implementing flush() for symmetric filters urzuga 574 [boost::lambda] Compile error with libstdc++ debug mode vladimir_prus 1132 zero_tokens clarification vladimir_prus 1165 more quoting problems vladimir_prus 1274 Useless error message vladimir_prus 1527 [program_options] Second (and subsequent) lines in tabbed text not aligned correctly vladimir_prus 1537 no value given in 'mysql_password =' vladimir_prus 1584 cryptic bbv2 error building quickbook vladimir_prus 1587 [program_options] crashes if value part missing in external configuration file vladimir_prus 1645 Invalid unicode support for default_value vladimir_prus 1679 added 4-way universal binary support from mac osx (ppc_ ppc64_ i386_ x86_64) vladimir_prus 1967 bjam bug? iostreams + zlib won't build for VC8 or MinGW with small hack to Jamfile.v2 vladimir_prus 2025 doxygen.jam does not quote argument properly vladimir_prus 2030 stdlibs=sun-stlport fails vladimir_prus 469 multitoken broken vladimir_prus 689 [program_options] Endless loop with long default arguments vladimir_prus 850 program_options strips off escaped quotes in some situations 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."

1 0

[constrained_value] Formal review request
by Robert Kawulak 24 Jun '08

24 Jun '08

Dear Boosters, I'm glad to say the Boost Constrained Value library is finally ready for a formal review. To remind what this library is about, an excerpt from the motivation section of the documentation is attached at the bottom of this message. Jeff, you volunteered to be the review manager - is your proposition still up to date? If so, I'd be thankful if you could do the work. ;-) The code and documentation can be downloaded here: http://rk.go.pl/f/constrained_value.zip The documentation is also available online here: http://rk.go.pl/r/constrained_value The only thing that's missing is test programs - I will try to add them during/after the review. The changes made since previous version: - rewritten the documentation at some points and added tutorial, - no more value generators - direct types or MPL integral constants are used instead, - bounded types use bounds exclusion instead of inclusion (so bounds are included by default in all cases), - changed order and default values of some of template parameters, - removed throw_verbose_exception error policy, - made other minor fixes and improvements. As always, feedback is welcome. Best regards, Robert Kawulak FROM THE MOTIVATION SECTION OF THE DOCUMENTATION: The Boost Constrained Value library contains class templates useful for creating constrained objects. A simple example is an object representing an hour of a day, for which only integers from the range [0, 23] are valid values: bounded_int<int, 0, 23>::type hour; hour = 20; // OK hour = 26; // exception! Behavior in case of assignment of an invalid value can be customized. For instance, instead of throwing an exception as in the example above, the value may be adjusted to meet the constraint: wrapping_int<int, 0, 255>::type buffer_index; buffer_index = 257; // OK: adjusts the value to fit in the range by wrapping it assert( buffer_index == 1 ); The library doesn't focus only on bounded objects as in the examples above -- virtually any constraint can be imposed by using a predicate: // constraint (a predicate) struct is_odd { bool operator () (int i) const { return (i % 2) != 0; } }; // and the usage is as simple as: constrained<int, is_odd> odd_int = 1; odd_int += 2; // OK ++odd_int; // exception! The library has a policy-based design to allow for flexibility in defining constraints and behavior in case of assignment of invalid values. Policies may be configured at compile-time for maximum efficiency or may be changeable at runtime if such dynamic functionality is needed.

2 1

interrest in a thread-pool library
by k-oli＠gmx.de 24 Jun '08

24 Jun '08

Hi, I follow the discussion about boost.future since the review request form Braddock. I'm using Braddocks future implementation for my threadpool library - may you are interessted in (I've uploaded two versions in the boost vault/Concurrent Programming). The library provides: - thread creation policies: determines the managemnt of worker threads - fixed set of threads in pool - create workerthreads on demand (depending on context) - let worker threads ime out after certain idle time - channel policies: manages access to queued tasks - bounded channel with high and low watermark for queuing tasks - unbounded channel with unlimited numer of queued tasks - rendezvous syncron hand-over between producer and consumer threads - queueing policy: determines how tasks will be removed from channel - FIFO - LIFO - priority queue (attribute assigned to task) - smart insertions and extractions (for instance remove oldest task with certain attribute by newst one) - tasks can be chained and lazy submit of taks is also supported (thanks to Braddocks future library). I've uploaded two versions. In version 1 a future is returned by submit of a task. Canceling the future means removing the task form the channel if it is still pending. Version 2 returns a task object from the submit function. The task it self can be interrupted if its is cooperative (means it has some interruption points in its code -> this_thread::interruption_point() ). Oliver

4 4

List posting delays
by Beman Dawes 24 Jun '08

24 Jun '08

Several people have reported up to 12 hours of delay before their messages are posted. DongInn Kim, the IU system admin, thinks that these delays may be caused by a new spam filter. He has turned off the filter for now to see if that in fact clears the delays. --Beman

1 0

Re: [boost] Google Summer Of Code 2008
by Kasra (Math & ComSci) 24 Jun '08

24 Jun '08

Thanks guys, I wonder why am I late for all these events :(( Next year then :D

1 0

[serialization] 1.34.1 / 1.35 incompatibiliy
by Johan Råde 24 Jun '08

24 Jun '08

There is an incompatibility between text archives saved with 1.34.1 and 1.35. The format for vectors (and other containers?) is different. How will this be handled in 1.36? Will 1.36 revert to the 1.34.1 format? This is the solution I would prefer. Otherwise I will not be able to read my old serialization archives. --Johan

2 1

[shifted_ptr] __normal_iterator ..?
by Phil Bouchard 24 Jun '08

24 Jun '08

Hi, Upon trying to create the new shifted_allocator class that is instead to be passed as a template parameter on STL containers, I got stuck in a circle or errors. I came to realize there was not way to replace internal pointers used by containers with smart pointers... which is very unfortunate. There are different solution I could take but hopefully I won't need them. By trying compiling shifted_ptr_test2.cpp in the Sandbox we'll get the following errors. I believe shifted_allocator (in shifted_allocator.hpp) should be represented the way it is but I may likely got something wrong because I haven't followed the verdict on this in previous posts: ...stl_vector.h: In member function `__gnu_cxx::__normal_iterator<typename _Alloc::const_pointer, std::vector<_Tp, _Alloc> > std::vector<_Tp, _Alloc>::begin() const [with _Tp = boost::detail::sh::shifted_ptr<vector>, _Alloc = boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> >]': ...stl_vector.h:221: instantiated from `std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = boost::detail::sh::shifted_ptr<vector>, _Alloc = boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> >]' shifted_ptr_test2.cpp:66: instantiated from here ...stl_vector.h:322: error: no matching function for call to `__gnu_cxx::__normal_iterator<const boost::detail::sh::shifted<boost::detail::sh::shifted_ptr<vector> >*, std::vector<boost::detail::sh::shifted_ptr<vector>, boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> > > >::__normal_iterator(boost::detail::sh::shifted_ptr<vector>* const&)' ...stl_iterator.h:587: note: candidates are: __gnu_cxx::__normal_iterator<const boost::detail::sh::shifted<boost::detail::sh::shifted_ptr<vector> >*, std::vector<boost::detail::sh::shifted_ptr<vector>, boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> > > >::__normal_iterator(const __gnu_cxx::__normal_iterator<const boost::detail::sh::shifted<boost::detail::sh::shifted_ptr<vector> >*, std::vector<boost::detail::sh::shifted_ptr<vector>, boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> > > >&) ...stl_iterator.h:603: note: __gnu_cxx::__normal_iterator<_Iterator, _Container>::__normal_iterator(const _Iterator&) [with _Iterator = const boost::detail::sh::shifted<boost::detail::sh::shifted_ptr<vector> >*, _Container = std::vector<boost::detail::sh::shifted_ptr<vector>, boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> > >] ...stl_iterator.h:600: note: __gnu_cxx::__normal_iterator<_Iterator, _Container>::__normal_iterator() [with _Iterator = const boost::detail::sh::shifted<boost::detail::sh::shifted_ptr<vector> >*, _Container = std::vector<boost::detail::sh::shifted_ptr<vector>, boost::shifted_allocator<boost::detail::sh::shifted_ptr<vector> > >] The Vault version presents the same code except the comment of line 67 & 68 in shifted_ptr_test2.cpp will need to be swapped: http://www.boostpro.com/vault/index.php?action=downloadfile&filename=shifte… -Phil

2 6

[website] discoverability of Trac (from boost-users)
by David Abrahams 24 Jun '08

24 Jun '08

I don't entirely understand the user's complaint, but it sounds like it must be valid... :) -- Dave Abrahams BoostPro Computing http://www.boostpro.com

2 1

boost::lambda::ret does not define result_type?
by Mathias Gaunard 23 Jun '08

23 Jun '08

I'm working on some project where I need to generate functors that expose result_type. I thought boost::lambda::ret was supposed to do just that, however it seems it doesn't. It would just require adding one line in boost/lambda/detail/lambda_functor_base.hpp, for the explicit_return type_action case.

1 0

Re: [boost] [hash] Is there any interest in cryptographic hash functions?
by Kasra (Math & ComSci) 23 Jun '08

23 Jun '08

Kevin, Some clarifications :D -> "I contest that statement, it is in fact quite modular, you are merely adding abstract base classes to impose an interface for the different models which is not necessary when using templates to compose objects." I forgot to mention I don't want to say that we will have base classes with virtual stuff, because that is expensive, however, what I wanted to point is that there must be an interface "template" so when one wants to add more block_cipher, ciphers and etc, one should know which functions should be available as public. The base class code is merely for documentation purposes only! "Okay, wipe algorithms are interesting but I don't see added value in clearing memory to zeros vs clearing the memory with some other pattern or random data. For current RAM technologies the original data is destroyed with a simple memset to zero." Check this one out: http://citp.princeton.edu/memory/ But when we have wipe algorithms we could hook them to fstreams and there is it! We will wipe a file which as you know is quiet important when you want to get rid of the data! "How is that better than template<class Cipher, class Mode, class Padding> struct block_cipher; ?" I told you about the idea of "cipher". So a block_cipher only encrypt/decrypts blocks and that is as far as it stretches (including key schedules etc). However, a cipher would encrypt any arbitary length of message. The modes of operation would have some thing like: template < class block_cipher, class padding > class mode_of_operation { . . . }; which turns a block_cipher concept into a "cipher"; that could encrypt any arbitary message length. So that is why I thought we could changed it. "I am interested in that optimization, I have deliberately chosen the 'slower' variant as it follows the original paper more closely and made it a little easier for me to implement. I would like to see benchmarks of this variant." I am NOT going to write this variant since "Paulo Barreto"; which is THE EXPERT, he has written the optimized version (http://www.iaik.tugraz.at/Research/krypto/AES/old/~rijmen/rijndael/rijndael…) So I would only create a wrapper for the functions :D. Since I have been active in the field I know of most of the optimized implementations, so we only need to write wrappers for them. However I am rather busy for two weeks, so this is probably the last e-mail which I will sent in two weeks time :( Thanks for the comments Kasra

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