- Boost - lists.boost.org

[typeof] patch for typeof.hpp
by Boris Gubenko 08 Jun '07

08 Jun '07

boost/typeof/typeof.hpp has conditionalization for the compilers that do not support typeof extension. For such compilers, defining BOOST_TYPEOF_NATIVE macro results in a "native typeof is not supported" error. The condition does not include aCC and cxx compilers. Since on the platforms not supporting typeof extension "_native" subset of typeof library tests is marked known failure, the test system does not flag this omission: the "_native" tests fail to compile anyway. Attached patch fixes this problem. Tested on Tru64 and HP-UX. Ok to commit to HEAD? Thanks, Boris

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[bimap] test typeof
by Boris Gubenko 08 Jun '07

08 Jun '07

bimap library test typeof fails to compile with compilers that do not support typeof extension like aCC, cxx and icc. Ok to mark it known failure for corresponding toolsets? Thanks, Boris

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[boost@home] revolutionary solution to create a testing farm
by Janek Kozicki 08 Jun '07

08 Jun '07

Hi, go ahead and call me crazy :) I couldn't sleep last night thinking about the problems that boost has with the testing process. Although the roots of my idea were different it turns out to be very similar to well known SETI@Home project. Therefore I call it Boost@Home :) Solution is simple in following steps: 1. create a vmware image with operating system and a single compiler installed. One vmware image per compiler to ease bugfix and upgrades in the vmware images. 2. let people download as many images (compilers) as they want. They will use it with freely available vmware-server to launch it. 3. After the virtual machine starts (with the compiler) a small program will be automatically executed to await instructions from boost.org. 4. The boost.org website will list the number of available virtual machines and which tests they are currently running. No interaction from the person who runs the virtual machine is required. Once it is launched it obeys instructions from the central boost.org server. Problems: 1. vmware is free to use, but supports only x86 architectures. Fortunately (to my knowledge) every compiler supported by boost has some version working in x86 environment. 2. some compilers require propertiary windows OS. Giving away a clean install of windows is prohibited. We can use ReactOS intead: http://www.reactos.org/ and install the compilers there. 3. It's possible that not every compiler has a version available for free. I'm not sure - is that true? If yes then it's in their interest to help us: - we ask the to provide a free copy of their compiler for the sole purpose of being used by Boost@Home project. - alternatively we drop support for their compiler. I have several machines lying around that could be used to help boost. If deploying a testing farm will become as easy, as downloading a vmware image and starting it - it's obvious that many people will join this. The capcity of boost testing farm can increase more than tenfold! -- Janek Kozicki |

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Boost inspection notification (2007-06-08/RC_1_34_0) *X*
by Rene Rivera 08 Jun '07

08 Jun '07

Boost Inspection Report Run Date: 16:10:16 UTC, Friday 08 June 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11453 files scanned 909 directories scanned (including root) 163 problems reported Problem counts: 0 files with invalid line endings 0 bookmarks with invalid characters 3 invalid urls 71 broken links 21 unlinked files 22 file/directory names issues 2 files with tabs 9 violations of the Boost min/max guidelines 35 usages of unnamed namespaces in headers (including .ipp files) Summary: archive (3) bind (1) boost-root (1) build (1) date_time (1) doc (2) filesystem (3) graph (3) iostreams (2) lambda (3) math (8) more (4) mpl (4) multi_array (2) ptr_container (1) python (8) regex (1) regression (32) serialization (1) test (81) type_traits (1) Details: *R* invalid (cr only) line-ending *A* invalid bookmarks, invalid urls, broken links, unlinked files *N* file/directory names issues *T* tabs in file *M* uses of min or max that have not been protected from the min/max macros, or unallowed #undef-s *U* unnamed namespace in header |archive| boost/archive/basic_streambuf_locale_saver.hpp: 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Boost inspection notification (2007-06-08/RC_1_34_0) *LC*
by Rene Rivera 08 Jun '07

08 Jun '07

Boost Inspection Report Run Date: 16:10:23 UTC, Friday 08 June 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11453 files scanned 909 directories scanned (including root) 1059 problems reported Problem counts: 661 files missing Boost license info or having wrong reference text 398 files missing copyright notice Summary: any (1) archive (1) build (68) concept_check (22) conversion (5) doc (1) filesystem (2) function (1) graph (1) inspect (1) integer (9) lambda (10) libs (6) logic (2) math (1) more (13) mpl (417) multi_array (13) numeric (188) optional (1) people (4) program_options (35) property_map (15) ptr_container (8) python (14) rational (5) regex (4) regression (118) release (2) serialization (16) signals (2) smart_ptr (8) test (3) timer (1) tr1 (2) tuple (5) utility (12) variant (42) Details: *L* missing Boost license info, or wrong reference text *C* missing copyright notice |any| libs/any/doc/ any.xml: *L* |archive| boost/archive/detail/ utf8_codecvt_facet.hpp: *L* |build| tools/build/v2/build/ build-request.jam: *L* modifiers.jam: *L* tools/build/v2/doc/ Jamfile.v2: *C* *L* tools/build/v2/doc/src/ advanced.xml: *C* *L* architecture.xml: *C* *L* catalog.xml: *C* *L* extending.xml: *C* *L* faq.xml: *C* *L* fragments.xml: *C* *L* howto.xml: *C* *L* install.xml: *C* *L* recipes.xml: *C* *L* reference.xml: *C* *L* standalone.xml: *C* *L* tutorial.xml: *C* *L* userman.xml: *C* *L* tools/build/v2/example/generate/ REAME.txt: *C* *L* a.cpp: *C* *L* tools/build/v2/example/generator/ README.txt: *C* *L* soap.jam: *C* *L* tools/build/v2/example/python_modules/ python_helpers.jam: *C* *L* python_helpers.py: *C* *L* tools/build/v2/test/ abs_workdir.py: *C* *L* dependency_property.py: *L* dependency_test.py: *C* *L* direct_request_test.py: *C* *L* dll_path.py: *L* double_loading.py: *L* duplicate.py: *L* echo_args.jam: *C* *L* empty.jam: *C* *L* expansion.py: *L* explicit.py: *L* gcc_runtime.py: *L* tools/build/v2/test/project-test3/lib3/ Jamfile: *C* *L* tools/build/v2/test/ readme.txt: *C* *L* svn_tree.py: *L* tag.py: *L* test_system.html: *L* tools/build/v2/tools/ sun.jam: *L* xsltproc.jam: *L* |concept_check| libs/concept_check/ bibliography.htm: *L* concept_check.htm: *L* concept_covering.htm: *L* creating_concepts.htm: *L* libs/concept_check/doc/ Jamfile.v2: *C* *L* libs/concept_check/doc/reference/ Assignable.xml: *L* BidirectionalIterator.xml: *L* CopyConstructible.xml: *L* DefaultConstructible.xml: *L* EqualityComparable.xml: *L* ForwardIterator.xml: *L* InputIterator.xml: *L* LessThanComparable.xml: *L* OutputIterator.xml: *L* RandomAccessIterator.xml: *L* SignedInteger.xml: *L* concepts.xml: *L* libs/concept_check/ implementation.htm: *L* prog_with_concepts.htm: *L* reference.htm: *L* using_concept_check.htm: *L* |conversion| libs/conversion/ cast.htm: *L* index.html: *C* *L* lexical_cast.htm: *L* libs/conversion/test/ Jamfile.v2: *L* |doc| doc/html/ docutils.css: *L* |filesystem| libs/filesystem/doc/ tr2_proposal.html: *L* libs/filesystem/src/ utf8_codecvt_facet.hpp: *L* |function| boost/function/detail/ gen_maybe_include.pl: *L* 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1 0

The Boost development process - an alternative proposal
by Nicola Musatti 08 Jun '07

08 Jun '07

Hallo, The proposals set forth by Beman Dawes and Gennadiy Rozental, and the ensuing discussion, contain many interesting ideas on how to improve our process and avoid the problems faced with 1.34 . However I feel that most of these require a significant effort to be put into practice and are therefore not suitable for dealing with our immediate needs. This is why I felt the need to present an alternative proposal: http://nicola.musatti.googlepages.com/boostprocessproposal Which I believe could be adopted as a starting point. I apologize for the inconvenient location and layout, but I'm in a hurry and Google Pages is currently the only web site I have access to. I plan to move this document to the new Boost wiki as soon as possible. I will be offline for the next couple of days, so please be patient if you don't see any reaction to your feedback. It is welcome indeed! Cheers, Nicola Musatti

1 0

Request for consideration for my weak_ptr class
by Alex Burton 08 Jun '07

08 Jun '07

Hello Boost developers <Class definition below> I understand there would be a collision with boost::weak_ptr, which is used for special scenarios with shared_ptr as I understand. A fair comment would be that this class actually does nothing, that a normal pointer would do and this is true. However, I find it extremely useful, and would like it considered as an addition to boost. It allows my code to be free of the * pointer notation. All pointers look the same, ie shared_ptr<Foo>, scoped_ptr<Foo>, weak_ptr<Foo> It throws an exception if it has been default constructed or set to 0, this could probably be a debug only behaviour for efficiency, but i leave it in release code. It can be used in many places a reference would be used. It includes constructors for many smart pointer types and from a reference to the class pointed to. using namespace std; struct IFoo { }; struct Foo : IFoo { }; vector<Foo> foos; BOOST_FOREACH(weak_ptr<Foo> f,foos) { //do something with f-> } vector< weak_ptr<IFoo> > weakfoos; std::copy(foos.begin(),foos.end(),back_inserter(weakfoos)); In the above code, if vector<Foo> foos was changed to vector< shared_ptr<Foo> > the code will still work perfectly with out change. I find this really useful because often small structs become polymorphic classes (requiring shared_ptr) as code evolves. The vector example is the best, but even when returning a pointer to something like this it is good: struct Bar {}; struct Foo { Bar mBar; weak_ptr<Bar> bar() const { return mBar; } }; if Bar mBar becomes scoped_ptr<Bar> mBar, the accessor still compiles. //Definition starts here namespace alex { class null_weak_ptr_exception : public std::runtime_error { public: null_weak_ptr_exception() : std::runtime_error("null_weak_ptr_exception : dereferencing null pointer") {} }; template <typename T> class weak_ptr { private: T * p; public: weak_ptr() : p(0) {} weak_ptr(weak_ptr const & x) : p(x.p) {} weak_ptr & operator=(weak_ptr const & x) { p = x.p; return *this; } weak_ptr(T * p) : p(p) {} weak_ptr(T & ref) : p(&ref) {} template<class Y> weak_ptr(const alex::weak_ptr<Y> & y) : p(y.get()) { } template<class Y> weak_ptr(const std::auto_ptr<Y> & y) : p(y.get()) { } template<class Y> weak_ptr(const boost::shared_ptr<Y> & y) : p(y.get()) { } template<class Y> weak_ptr(const boost::scoped_ptr<Y> & y) : p(y.get()) { } template<class Y> weak_ptr(const alex::aggregate_ptr<Y> & y) : p(y.get()) { } T & operator*() const { if (!p) throw null_weak_ptr_exception(); return *p; } T * operator->() const { if (!p) throw null_weak_ptr_exception(); return p; } T * get() const { return p; } }; template <typename T> bool operator == (const weak_ptr<T> & x,const weak_ptr<T> & y) { return x.get() == y.get(); } }

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Concurrent async requests
by Владислав Чернышов 08 Jun '07

08 Jun '07

Hi! If I do something like this can I be sure that async requests will run concurrently? boost::asio::io_service io_service; client c(io_service, argv[1], argv[2]); client c1(io_service, argv[1], argv[2]); boost::thread tr1(boost::bind(&boost::asio::io_service::run, &io_service)); io_service.run(); tr1.join(); The client class is a class from boost.asio example. Vlad

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[multi_index] use cases for iterator_to()
by "JOAQUIN LOPEZ MU?Z" 08 Jun '07

08 Jun '07

Hello, More than a year ago a request was made for Boost.MultiIndx to provide the ability to get an iterator to an element x from x alone: iterator iterator_to(const value_type& x); I can provide this functionality in constant time, and the internal implementation is trivial, but I got thinking about the potential use cases for such capability and cannot come up with something convincing. Do you see usefulness in having iterator_to()? Can you describe a potential usage scenario? At first blush, seems like this is at least as useful as the homonym functionality in Boost.Intrusive, but if you think about the obvious scenarios applying to B.I, it turns out they do not immediately translate to B.MI. Thank you! Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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[thread] - read_write_mutex missing
by Oliver.Kowalke＠qimonda.com 08 Jun '07

08 Jun '07

Hello, I'm missing read_write_mutex in the thread library in boost 1.34. Is there any reason for that? Oliver

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