- Boost - lists.boost.org

Lock-free atomic_shared_ptr<T>?
by Jeffrey Yasskin 27 Feb '08

27 Feb '08

Porting lock-free data structures from Java is complicated by the fact that the implementations assume garbage collection. There are a few techniques available for dealing with manual memory management without locks, but they complicate the implementation of algorithms that are complex enough already. So I'm thinking about trying to implement an atomic_shared_ptr<T> along the lines of the interface for other atomics defined in http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2427.html but using shared_ptr<T> as a value type. The implementation I'm thinking of uses hazard pointers (http://erdani.org/publications/cuj-2004-12.pdf) and double-wide-cas (cmpxchg16b on x86-64). So I have three questions for this list: 1) Would there be interest in adding such a type to the Boost smart pointers? 2) Has someone already done this? 3) Is anyone already working on an implementation of atomic<T> from N2427? I'm unlikely to need the whole thing, so even a half-completed public repository would be helpful. Thanks, Jeffrey Yasskin

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Quick Allocator Static Destruction Bug
by Matt Hunt 26 Feb '08

26 Feb '08

I have encountered a bug when using BOOST_SP_USE_QUICK_ALLOCATOR with shared_ptr<> objects that are contained in a static container. This bug is verifiable with Visual Studio 2005 SP1 as well as MinGW GCC 4.2.1. As an example, I have created a static std::map, which pairs a long with a boost::shared_ptr<>. This is the scenario where I first encountered the bug. The boost preprocessor definition BOOST_SP_USE_QUICK_ALLOCATOR is defined. When the program exists, the application crashes during deallocation of the shared_ptrs. Under Visual Studio 2005, MSVCR80d.dllcrashes during _free_dbg() (and likewise MSVCR80.dll crashes during _free()). If the map is made a regular member instead of a static member, the program exits properly. In addition, if the boost quick allocator is disabled, the program exits properly. In my testing, I have found the key type is irrelevant, and what the shared_ptr points to also does not matter. The issue is with the Quick Allocator and the runtime cleanup of static objects. Here is an example console app. that will produce the problem. ------------------- // Boost Headers #define BOOST_SP_USE_QUICK_ALLOCATOR #include <boost/shared_ptr.hpp> // STL Map #include <map> // Test struct for Shared Pointer struct tTestItem { long x; }; // Test Class to use static map class tTestClass { public: tTestClass(long id) { boost::shared_ptr<tTestItem> xTestItem(new tTestItem()); m_TestMap.insert(std::make_pair<long, boost::shared_ptr<tTestItem> >(id, xTestItem)); } private: static std::map<long, boost::shared_ptr<tTestItem> > m_TestMap; }; // Create Static Instance std::map<long, boost::shared_ptr<tTestItem> > tTestClass::m_TestMap; // Simple Main App int main() { tTestClass class1(1); tTestClass class2(2); return 0; } ------------------- Under Visual Studio, the problem can be detected as follows: In boost\detail\lwm_win32_cs.hpp, put breakpoints in (1) lightweight_mutex's ctor, (2) lightweight_mutex's dtor, and (3) scoped_lock's ctor. In boost\detail\quick_allocator.hpp, put breakpoints in allocator_impl<size, align_>'s (4) mutex(), (5) alloc(), and (6) dealloc(). Run the program. (5) [alloc()] fires. We're constructing class1, which is constructing a shared_ptr. (4) [mutex()] fires, as alloc() calls mutex(). (1) [lightweight_mutex's ctor] fires, as mutex() constructs a static lightweight_mutex. (3) [scoped_lock's ctor] fires, as alloc() then constructs a scoped_lock from the static lightweight_mutex. (5), (4), and (3) then fire as we construct class2 (the static lightweight_mutex has already been constructed, so (1) doesn't run again.) (2) [lightweight_mutex's dtor] fires, as we exit main() and destroy the static lightweight_mutex. (6) [dealloc()] fires, as we exit main() and destroy the static map and its contained shared_ptrs. (4) [mutex()] fires, returning a reference to the destroyed static lightweight_mutex. (3) [scoped_lock's ctor] fires, which calls EnterCriticalSection() with a trashed CRITICAL_SECTION, which causes the program to crash. Please let me know if I am misusing boost functionality in the above test application. Sincerely, Matthew Hunt

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boost::bind does not trigger template instantiation
by Yingwei Zhang 26 Feb '08

26 Feb '08

HI, in my spirit grammar file, I use boost::bind to bind a template function: boos::bind(&std::vector<uint32_t>::push_back)(my_vector, i); This compiles fine. However, since this is the only usage of std::vector<uint32_t>::push_back, this function is not instantiated and linker complains that this function is not defined. I could write a wrapper function around std::vector<uint32_t> to force its instantiation. My questions is: is there a more elegant solution in this scenario? Yingwei Zhang Powerset

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program_options bug
by Lev Borovoi 26 Feb '08

26 Feb '08

I've found the following bug in program_options: When printing the options syntax, if it doesn't fit in one line, the library crashes. Here is a minimal reproduction: options_description opts; opts.add_options()("option", "A very long description. A very long description. A very long description. A very long description. A very long description."); cout << opts; I work on XP professional x64 SP1 and use Boost 1.33.1

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[1.35.0] more/index.html and more/ content
by Beman Dawes 25 Feb '08

25 Feb '08

root/more/index.html has disappeared, as has all of the content. That isn't acceptable. Even if much of the content is moved elsewhere, index.html has to continue to exist, so that users can continue to find the content. It is OK for some of the links on root/more/index.html to refer to the web site. It is OK to move content out of the release and into the web site if it is unlikely to be referenced in the process of actually using a release. Any of the content that is likely to used by users of a release must be restored. Releases have to be usable without Internet connectivity. Pages like the License information, How to report bugs, and FAQ have to be part of a release. --Beman

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CfP: ECOOP workshop Parallel/High-performance Object-Oriented Scientific Computing
by Kei Davis 25 Feb '08

25 Feb '08

CALL FOR CONTRIBUTIONS 7th Workshop on PARALLEL/HIGH-PERFORMANCE OBJECT-ORIENTED SCIENTIFIC COMPUTING (POOSC'08) at the EUROPEAN CONFERENCE ON OBJECT-ORIENTED PROGRAMMING (ECOOP 2008) Paphos, Cyprus, 7-11 July 2008 http://www.ccs3.lanl.gov/poosc08/ While object-oriented programming is being embraced in industry, particularly in the form of C++ and to an increasing extent Java and Python, its acceptance by the parallel scientific programming community is still tentative. In this latter domain performance is invariably of paramount importance, where even C++ is considered suspect, primarily because of real or perceived loss of performance. On the other hand, various factors practically dictate the use of language features that provide higher level abstractions than do C or older FORTRAN standards. These include increasingly complex physics models, numerical algorithms, and hardware--deep memory hierarchies, exponentially-increasing numbers of processors, and the advent of multi- and many-core processors and heterogeneous architectures. This workshop seeks to bring together practitioners and researchers in this growing field to `compare notes' on their work. The emphasis is on identifying specific problems impeding greater acceptance and widespread use of object-oriented programming in scientific computing; proposed and implemented solutions to these problems; and new or novel approaches, techniques or idioms for scientific and/or parallel computing. Presentations of work in progress are welcome. Specific areas of interest include, but are not limited to: * tried or proposed programming language alternatives to C++; * performance issues and their realized or proposed resolution; * issues specific to handling or abstracting parallelism, including the handling or abstraction of heterogeneous architectures; * specific points of concern for progress and acceptance of object-oriented scientific computing; * existing, developing, or proposed software; * frameworks and tools for scientific object-oriented computing; * schemes for user-level fault tolerance; * grand visions (of relevance). The workshop will consist of a sequences of presentations each followed by a discussion session. The workshop will conclude with an overall discussion. We expect the majority of the participants to give presentations. For authors of accepted presentations who require justification for travel the organizers can provide official letters of invitation. PUBLICATION Full papers accepted to the workshop will be published as a proceedings either in the Springer LNCS series or in the John von Neumann Institute for Computing NIC series, Forschungszentrum Juelich. Additionally, it is possible that a summary of the workshop will be published as an ECOOP Workshop Reader in Springer's LNCS series. SUBMISSION PROCEDURE Prospective authors are invited to submit abstracts, papers, or presentations (slides) in ASCII, PDF, postscript, or PowerPoint. Submitted materials will be distributed at the workshop. Submission and email correspondence to poosc08(a)lanl.gov AUTHORS' SCHEDULE May 4, 2008: Initial submissions due May 19, 2008: Notification of acceptance Jun 15, 2008: Final materials to be distributed due Jul 7 or 8, 2008: Workshop TBD, 2008: Final papers for publication due ORGANIZATION This workshop is a joint organization by Los Alamos National Laboratory, USA; and the University of Applied Sciences Regensburg, Germany. FURTHER INFORMATION http://www.c3.lanl.gov/poosc08/

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Trac open bugs - by assignee
by Marshall Clow 25 Feb '08

25 Feb '08

[ 213 open bugs today, 212 Friday ] 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 23 djowel 19 az_sw_dude 13 grafik 12 vladimir_prus 12 doug_gregor 12 dgregor 12 dave 11 agurtovoy 10 no-maintainer 9 bemandawes 7 jsiek 7 anthonyw 6 johnmaddock 5 witt 5 turkanis 5 igaztanaga 3 eric_niebler 3 ebf 3 danielw 3 danieljames 2 t_schwinger 2 shammah 2 rogeeff 2 ramey 2 pavol_droba 2 nasonov 2 matias 2 kaalus 2 jmaurer 2 hkaiser 2 aaron_windsor 2 None 1 urzuga 1 speedsnail 1 samuel_krempp 1 pdimov 1 nesotto 1 marshall 1 hljin 1 garcia 1 dlwalker None 1493 SVN files making it through to install None 1644 Boost.Test missing documentation file BOOST_CHECK_CLOSE_FRACTION.html aaron_windsor 1622 Adjacency list needs to handle self-edges correctly 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 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 588 mpl::remove compile error with gcc 4.1.0 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 1640 [Thread] warnings from VC9 + warning level 4 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 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 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 1589 [filesystem] 'mbstate_t' : is not a member of 'std' 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 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 1573 Broken URL in copyright boiler-plate 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 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 865 Use of C++0x keyword as identifier dave 910 gcc strict-aliasing problems with python 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 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 1630 gcc-4.3: adjacency_list.hpp includes deprecated header 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 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) 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 1507 [variant] C4512 warnings from VC8.0 ebf 1548 [variant][docs]typo: formal arg_ operand_ should be v in times_two arglist ebf 993 Variant should use least common multiple of alignments_ rather than maximum eric_niebler 1631 [accumulators] compiler warnings with VC9 + warning level 4 eric_niebler 1650 Accumulators conflicts with interval eric_niebler 1652 foreach + this keyword -> fails under MSVC garcia 1581 Boost.MultiArray: Resizing bug if the index is not 0-based grafik 1041 Cygwin requires PATH setting. 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 1512 Broken link to vacpp in bjam docs. grafik 1513 Broken link to bcpp in bjam docs. grafik 1571 boost bugtracker displays a patch incorrectly grafik 1576 cannot read non-ASCII output messages grafik 1577 Some commands don't work because hStdInput == 0 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 hkaiser 1079 boost-1.34.0 fails to compile. concept checks not satisfied. hkaiser 1603 Compile Error: cpp_expression_value.hpp - is_int_ is_bool_ is_uint undeclared hljin 1522 bit_range friend decl in bit_aligned_pixel_reference.hpp needs to be fully qualified for gcc 4.3 mainline 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 1635 Incomplete include guard in boost/intrusive 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 1314 Using SSE-intrinsics in VC8 causes static assert in type_with_alignment.hpp johnmaddock 1411 Fix BOOST_PARTIAL_SPECIALIZATION_EXPLICT_ARGS johnmaddock 1446 POSIX API doesn't use C locale johnmaddock 1451 error: use of C99 long long integer constant johnmaddock 1626 [type_traits] "bad_alloc is not a member of std" in has_virtual_destructor_test.cpp jsiek 1531 segfault in dynamic_bitset::reference assign operator jsiek 1540 Poisson distribution very slow for large mean (and may also overflow). 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 marshall 1252 [pool] severe overhead with unaligned sizes. matias 1406 Understanding the Tables outdated matias 1651 incorrect typedefs in examples nasonov 1220 lexical_cast requires RTTI nasonov 754 boost::any - typeid comparison across shared boundaries nesotto 1629 range/iterator_range.hpp bug 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 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 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* ramey 1285 [serialization] problem when including shared_ptr_132.hpp ramey 1628 Lack of wide character support prevents boost.serialization from linking rogeeff 1383 signal.h features not found on Mac OS rogeeff 1542 [test] compiler errors when building with stdcxx library 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 1100 Building boost.function_types fails cvs rev-1.1_ no chdir command in bash t_schwinger 1602 function_types Jamfile depends on the source tree being in a specific place. turkanis 1523 [iostreams] VC8/VC9 compiler warnings turkanis 1545 [boost/rational.hpp] 'noskipws' is not a member of 'std' turkanis 1579 gzip compressor should model DualUseFilter turkanis 1580 Add static assert to prohibit instantiating a chain with mode dual_use turkanis 1649 Fix definition of JavaScript menu to avoid long chains of functions urzuga 574 [boost::lambda] Compile error with libstdc++ debug mode vladimir_prus 1165 more quoting problems vladimir_prus 1274 Useless error message vladimir_prus 1321 invalid docbook in tool documentation vladimir_prus 1527 [program_options] Second (and subsequent) lines in tabbed text not aligned correctly vladimir_prus 1530 Program options documentation - Overview - Syntactic Information example typo 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 1588 [program_options] crashes if value part missing in external configuration file vladimir_prus 1645 Invalid unicode support for default_value 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] [date_time][thread][string][python][mpi][typeof][function_types] License links in copyright comments
by Daniel James 25 Feb '08

25 Feb '08

Hello all, I've prepared my patches to fix several links to the copyright files. There's a lot of changes, so I've put the patches on the web instead of attaching the patches. I've got three separate patches for fixing different errors. If there are no objections I'll commit them to trunk and release in a few days. First patch is for headers which link to the non-existant LICENSE-1.0. It touches the date time, thread and string algorithm libraries: http://unordered.nfshost.com/x/copyright1.patch The next one fixes links 'http:#www.boost.org/LICENSE_1_0.txt' which seems to be a search and replace error when converting C++ header comments to python. This one is for the python and mpi libraries. http://unordered.nfshost.com/x/copyright2.patch Finally there are a handful of links of the form http:/\/www.boost.org/LICENSE_1_0.txt. These are in the typeof and function types libraries. http://unordered.nfshost.com/x/copyright3.patch There's another link of that form in the script 'libs/typeof/tools/preprocess.pl' but I left it alone as it might be correctly escaped. Daniel

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[accumulators] Patch to fix the remaining Tru64/CXX failures.
by Markus Schöpflin 25 Feb '08

25 Feb '08

Hello, I would like to commit the attached patch on the trunk in order to fix the remaining Tru64/CXX failures for the accumulators lib. OK? Regards, Markus Index: pot_tail_mean.hpp =================================================================== --- pot_tail_mean.hpp (revision 43370) +++ pot_tail_mean.hpp (working copy) @@ -83,8 +83,8 @@ extractor<peaks_over_threshold_tag> const some_peaks_over_threshold = {}; extractor<pot_quantile_tag> const some_pot_quantile = {}; - float_type beta_bar = some_peaks_over_threshold(args).get<1>(); - float_type xi_hat = some_peaks_over_threshold(args).get<2>(); + float_type beta_bar = some_peaks_over_threshold(args).template get<1>(); + float_type xi_hat = some_peaks_over_threshold(args).template get<2>(); return some_pot_quantile(args) - this->sign_ * beta_bar/( xi_hat - 1. ) * std::pow( is_same<LeftRight, left>::value ? args[quantile_probability] : 1. - args[quantile_probability]

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Re: [boost] [Boost] Ann: Floating Point Utilities Review starts today
by Hartmut Kaiser 22 Feb '08

22 Feb '08

> The review of Johan Rade's floating point utilities starts today. > > Code and docs can be downloaded from : > http://www.boost-consulting.com/vault/index.php? > action=downloadfile&filename=floating_point_utilities_v3.zip&directory= > M > ath%20-%20Numerics& > > The library consists of three parts: > > 1) Floating point classification routines: these are optimised > implementations of the C99 and C++ TR1 functions fpclassify, isinf, > isnan, > isnormal and isfinite. From Boost-1.35 onwards these are already a > part of > Boost.Math (see > http://svn.boost.org/svn/boost/trunk/libs/math/doc/sf_and_dist/html/ > math_toolkit/special/fpclass.html) > so if accepted the two implementations will get merged. > > The review here should focus on the implementation used, and testing on > whatever platforms you have available - in particular are there any > circumstances (compiler optimisation settings etc) where this > implementation > breaks? > > 2) Sign manipulation functions: implementations of the C99 and C++ TR1 > functions copysign and signbit, plus the changesign function. Two of > these > (signbit and copysign) are currently undocumented members of > Boost.Math, and > again the two implementations will get merged if this library is > accepted. > > Again the main focus of the review here is the implementation, and > testing > thereof especially in the presence of compiler optimisations. > > 3) C++ locale facets: these will read and write non-finite numbers in a > portable and round-trippable way: that is not otherwise possible with > current C++ std library implementations. These are particularly > useful for > number-serialisation for example. > > Since the design is already specified by the C++ standard for these > facets, > your review here should focus on implementation, testing, > documentation, and > perhaps where in Boost these should best be placed if accepted. > > These look to be a useful collection of utilities, so I'll look > forward to > your reviews, This turns out to be a very short review from my end, but I thought I share some thoughts anyway. * What is your evaluation of the design? Very problem oriented and helping to abstract the platform specifics. * What is your evaluation of the implementation? I didn't look at the code in detail. * What is your evaluation of the documentation? Sufficient. * What is your evaluation of the potential usefulness of the library? Very useful. In fact Joel and I are using the floating point classification and sign-bit routines in SpiritV2 (for both, parsing and generation), and it turned out to be a huge time saver for us. * Did you try to use the library? With what compiler? Did you have any problems? Yes, SpiritV2 is using it. We tried with different versions of gcc, intel and msvc (mainly on windows) * How much effort did you put into your evaluation? Essentially no extra time. I'm reporting what I've learned while writing the Spirit code. * Are you knowledgeable about the problem domain? Using this library helped me to understand some of the problems in this domain. I'm not considering myself to be an expert, though. * Do you think the library should be accepted as a Boost library? Definitely, yes. Regards Hartmut

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