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[boost thread rework] New version uploaded to Boost Vault
by Ion Gaztañaga 06 Sep '05

06 Sep '05

Hi to all, I've just finished implementing the lockable objects of Kevlin's proposal based on Boost mutexes and conditions. Since boost mutex operations are private and only available with locks, I haven't found a way to implement Kevlin's interface over boost threads without using some very nasty tricks. If someone has a better idea, let me know. The implementation nearly fills all the proposal of the documentation, so I will wait for new elements so that I can continue with this project. This elements are present in the current version: -> threader and joiner classes -> lockable, try_lockable, condition_lockable -> locker, try_locker -> locking_ptr There are open issues in the paper like timeout handling and new possible lockers, (for example, for conditional_lockable objects). As soon as I get more information I will continue developing it. Regards, Ion

15 57

error in remove_edge() of subgraph
by Yu Huang 05 Sep '05

05 Sep '05

Hi all, I tried a clustering recursively cut the graph based on betweenness_centrality and form the connected components into subgraphs of the original big graph. It's convenient to use subgraph("graph.create_subgraph()"), but the trick is that whenever "remove_edge(e, subgraph)", the subgraph and its ancestor graph is not affected(not like what the doc says). Code sketch is like this: vector<double> edge_centrality(no_of_edges); EdgeCentralityMap ec_map(edge_centrality.begin(), get(edge_index, subgraph)); indirect_cmp<EdgeCentralityMap, std::less<centrality_type> > cmp(ec_map); brandes_betweenness_centrality(subgraph, edge_centrality_map(ec_map)); edgeDescriptor e = *max_element(edges(subgraph).first, edges(subgraph).second, cmp); centrality_type max_centrality = get(ec_map, e); std::cerr<<"max_centrality is "<<max_centrality<<std::endl; remove_edge(e, subgraph); std::cerr<<"after removal the subgraph has "<<num_edges(subgraph)<<" edges."<<std::endl; The last error-reporting sentence lets me find that the edge e is not removed from subgraph at all. Even I tried to remove e from graph("remove_edge(subgraph.local_to_global(e), graph)"), it also fails. I hope somebody could have a check on it. So i gave up the subgraph and directly create graphs(real graph) from the components of the ancestor graph. It worked out. Thanks, Yu

1 0

Repository access and cvs watch
by Thomas Witt 05 Sep '05

05 Sep '05

Hi, AFAICT there is currently no way to make cvs provide writable files when checking out/updating the boost repository. This causes me some grief and I might not be the only one out there. After reading the CVS manual (well the watch part) I have concluded that this is due to the fact that somebody issued a recursive 'cvs watch on' on the boost tree. AFAICS this has not been discussed on the mailing list. This forces a certain usage of cvs on everybody else. I.e. the users have to use 'cvs edit' (or fiddle with file permissions). For now I am strongly opposed to this way of using cvs. In my experience the use of 'cvs edit' does not provide significant benefit while it adds significant overhead to my work. Most users will change the permissions locally and not bother with cvs edit anyway. If there is anybody out there who has different experiences I would be very interested to hear about them. I therefore propose to turn cvs watch off thus giving the user a choice whether she wants read-only or read-write files. Please note that this does not disable the watching of files in general. Every user still can use cvs watch add to watch files and is still guaranteed to get notified about the really interesting events (i.e. those that alter a file in the repository). What did I miss? What do you think? Thomas

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Boost regression notification (2005-09-05 [RC_1_33_0])
by Douglas Gregor 05 Sep '05

05 Sep '05

Boost regression test failures ------------------------------ Report time: 2005-09-05T16:05:06Z This report lists all regression test failures on release platforms. Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-RC_1_33_0/developer/i… 553 failures in 12 libraries: algorithm/string (2) config (1) foreach (1) iostreams (2) math (3) mpl (1) multi_index (15) program_options (14) regex (64) serialization (433) thread (8) wave (9) |algorithm/string| regex: gcc-3_3-darwin vc-7_1 |config| config_test: intel-9.0-linux |foreach| rvalue_const: vc-7_1 |iostreams| regex_filter_test: gcc-3_3-darwin vc-7_1 |math| octonion_test: gcc-4_0-darwin quaternion_test: gcc-4_0-darwin special_functions_test: gcc-4_0-darwin |mpl| size_t: gcc-4_0-darwin |multi_index| test_modifiers: intel-9.0-linux test_serialization: cw-9_4 cw-9_5-darwin gcc-3.2.3-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin gcc-4.0.1-linux gcc-4_0-darwin intel-8.1-linux intel-9.0-linux intel-win32-8_1 intel-win32-9_0 mingw-3_4_2 vc-7_1 |program_options| cmdline_test: vc-7_1 cmdline_test_dll: vc-7_1 options_description_test: vc-7_1 options_description_test_dll: vc-7_1 parsers_test: vc-7_1 parsers_test_dll: vc-7_1 positional_options_test: vc-7_1 positional_options_test_dll: vc-7_1 unicode_test: vc-7_1 unicode_test_dll: vc-7_1 variable_map_test: vc-7_1 variable_map_test_dll: vc-7_1 winmain: vc-7_1 winmain_dll: vc-7_1 |regex| bad_expression_test: gcc-3_3-darwin vc-7_1 captures_example: gcc-3_3-darwin captures_test: gcc-3_3-darwin collate_info: gcc-3_3-darwin vc-7_1 concept_check: gcc-3_3-darwin credit_card_example: gcc-3_3-darwin vc-7_1 grep: gcc-3_3-darwin vc-7_1 icu_example: gcc-3_3-darwin vc-7_1 mfc_example: gcc-3_3-darwin vc-7_1 object_cache_test: gcc-3_3-darwin vc-7_1 partial_regex_grep: gcc-3_3-darwin vc-7_1 partial_regex_match: gcc-3_3-darwin vc-7_1 posix_api_check: gcc-3_3-darwin posix_api_check_cpp: gcc-3_3-darwin vc-7_1 recursion_test: gcc-3_3-darwin vc-7_1 regex_config_info: gcc-3_3-darwin vc-7_1 regex_dll_config_info: gcc-3_3-darwin vc-7_1 regex_grep_example_1: gcc-3_3-darwin vc-7_1 regex_grep_example_2: gcc-3_3-darwin vc-7_1 regex_grep_example_3: gcc-3_3-darwin vc-7_1 regex_grep_example_4: gcc-3_3-darwin regex_iterator_example: gcc-3_3-darwin vc-7_1 regex_match_example: gcc-3_3-darwin vc-7_1 regex_merge_example: gcc-3_3-darwin vc-7_1 regex_regress: gcc-3_3-darwin vc-7_1 regex_regress_dll: gcc-3_3-darwin vc-7_1 regex_replace_example: gcc-3_3-darwin vc-7_1 regex_search_example: gcc-3_3-darwin vc-7_1 regex_split_example_1: gcc-3_3-darwin vc-7_1 regex_split_example_2: gcc-3_3-darwin vc-7_1 regex_timer: gcc-3_3-darwin regex_token_iterator_eg_1: gcc-3_3-darwin vc-7_1 regex_token_iterator_eg_2: gcc-3_3-darwin vc-7_1 static_mutex_test: gcc-3_3-darwin vc-7_1 wide_posix_api_check_cpp: gcc-3_3-darwin vc-7_1 |serialization| test_array_binary_archive: vc-7_1 test_array_binary_archive_dll: vc-7_1 test_array_text_archive: vc-7_1 test_array_text_archive_dll: vc-7_1 test_array_text_warchive: vc-7_1 test_array_text_warchive_dll: vc-7_1 test_array_xml_archive: vc-7_1 test_array_xml_archive_dll: vc-7_1 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test_tracking_text_warchive_dll: vc-7_1 test_tracking_xml_archive: vc-7_1 test_tracking_xml_archive_dll: vc-7_1 test_tracking_xml_warchive: vc-7_1 test_tracking_xml_warchive_dll: vc-7_1 test_unregistered_binary_archive: vc-7_1 test_unregistered_binary_archive_dll: vc-7_1 test_unregistered_text_archive: vc-7_1 test_unregistered_text_archive_dll: vc-7_1 test_unregistered_text_warchive: vc-7_1 test_unregistered_text_warchive_dll: vc-7_1 test_unregistered_xml_archive: vc-7_1 test_unregistered_xml_archive_dll: vc-7_1 test_unregistered_xml_warchive: vc-7_1 test_unregistered_xml_warchive_dll: vc-7_1 test_variant_binary_archive: vc-7_1 test_variant_binary_archive_dll: vc-7_1 test_variant_text_archive: vc-7_1 test_variant_text_archive_dll: vc-7_1 test_variant_text_warchive: vc-7_1 test_variant_text_warchive_dll: vc-7_1 test_variant_xml_archive: vc-7_1 test_variant_xml_archive_dll: vc-7_1 test_variant_xml_warchive: vc-7_1 test_variant_xml_warchive_dll: vc-7_1 test_vector_binary_archive: vc-7_1 test_vector_binary_archive_dll: vc-7_1 test_vector_text_archive: vc-7_1 test_vector_text_archive_dll: vc-7_1 test_vector_text_warchive: vc-7_1 test_vector_text_warchive_dll: vc-7_1 test_vector_xml_archive: vc-7_1 test_vector_xml_archive_dll: vc-7_1 test_vector_xml_warchive: vc-7_1 test_vector_xml_warchive_dll: vc-7_1 test_void_cast: vc-7_1 test_void_cast_dll: vc-7_1 |thread| test_barrier_lib: intel-9.0-linux test_condition_lib: intel-9.0-linux test_mutex_lib: intel-9.0-linux test_once_lib: intel-9.0-linux test_read_write_mutex_lib: intel-9.0-linux test_thread_lib: intel-9.0-linux test_tss_lib: intel-9.0-linux test_xtime_lib: intel-9.0-linux |wave| test_re2c_lexer: cw-9_4 intel-9.0-linux vc-7_1 test_slex_lexer: cw-9_4 intel-9.0-linux vc-7_1 testwave: cw-9_4 intel-9.0-linux vc-7_1

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Boost regression notification (2005-09-05 [HEAD])
by Douglas Gregor 05 Sep '05

05 Sep '05

Boost regression test failures ------------------------------ Report time: 2005-09-05T05:00:07Z This report lists all regression test failures on release platforms. WARNING: The following libraries have failing regression tests but do not have a maintainer on file. Once a maintainer is found, add an entry to libs/maintainers.txt to eliminate this message. typeof Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-HEAD/developer/issues… 89 failures in 11 libraries: foreach (7) graph (4) math (6) mpl (2) multi_index (5) parameter (4) serialization (43) spirit (2) thread (8) typeof (4) wave (4) |foreach| user_defined: cw-8_3 cw-9_4 cw-9_5-darwin msvc vc-6_5 vc-6_5-stlport vc-7_0 |graph| graphviz_test: vc-7_1 vc-7_1 vc-7_1 layout_test: intel-win32-9_0 |math| octonion_test: gcc-4_0-darwin gcc-4_0-darwin quaternion_test: gcc-4_0-darwin gcc-4_0-darwin special_functions_test: gcc-4_0-darwin gcc-4_0-darwin |mpl| size_t: gcc-4_0-darwin gcc-4_0-darwin |multi_index| test_capacity: gcc-4_0-darwin test_list_ops: gcc-4_0-darwin test_modifiers: gcc-4_0-darwin test_safe_mode: gcc-4_0-darwin test_update: gcc-4_0-darwin |parameter| basics: borland-5_6_4 macros: borland-5_6_4 sfinae: borland-5_6_4 unnamed: borland-5_6_4 |serialization| test_class_info_load_binary_archive: cw-9_5-darwin gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_binary_archive_dll: cw-9_5-darwin gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_archive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_archive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_warchive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_warchive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_archive: cw-9_5-darwin gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_archive_dll: cw-9_5-darwin gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_warchive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_warchive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_const_save_fail1: msvc test_const_save_fail2: msvc test_const_save_fail3: msvc test_map_binary_archive_dll: msvc test_map_text_archive_dll: msvc test_map_text_warchive_dll: msvc test_reset_object_address: vc-7_1 test_reset_object_address_dll: vc-7_1 test_static_warning: vc-7_1 |spirit| traverse_tests: intel-win32-9_0 traverse_tests_debug: intel-win32-9_0 |thread| test_barrier_lib: intel-9.0-linux test_condition_lib: intel-9.0-linux test_mutex_lib: intel-9.0-linux test_once_lib: intel-9.0-linux test_read_write_mutex_lib: intel-9.0-linux test_thread_lib: intel-9.0-linux test_tss_lib: intel-9.0-linux test_xtime_lib: intel-9.0-linux |typeof| type_emulation: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux type_native: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux |wave| test_re2c_lexer: intel-9.0-linux test_slex_lexer: intel-9.0-linux testwave: gcc-3.3.6-linux intel-9.0-linux

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asio::demuxer at global scope dead-locks?
by Roland Schwarz 05 Sep '05

05 Sep '05

I tried modified the timer1.cpp a little: #include <iostream> #include <asio.hpp> asio::demuxer d; int main() { asio::deadline_timer t(d, boost::posix_time::seconds(5)); t.wait(); std::cout << "Hello, world!\n"; return 0; } by moving the demuxer object to global scope. I have to be honest, I am not through with the documentation yet, but also I did not find a bold mark which prohibits such use. At least the program seems to never end, it seems to hang somewhere in the library clean up code? I can see it waiting for a thread to stop: // Wait for the thread to exit. void join() { ::WaitForSingleObject(thread_, INFINITE); } But this never happens. Is it true indeed, that demuxer s must not be at global scope? Regards, Roland

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[Wiki] approval for editing
by Matt Hurd 05 Sep '05

05 Sep '05

Was going to play with the wiki to see if it would suit my needs for some thread stuff. I get this when clicking on "Edit page". ______________ Editing Denied BOOST WIKI | RecentChanges | Preferences | Page List | Links List Editing not allowed: user, ip, or network is blocked. Contact the wiki administrator for more information. BOOST WIKI | RecentChanges | Preferences | Page List | Links List Search: Disclaimer: This site not officially maintained by Boost Developers ______________ Do I need some kind of authorisation? matt. matt(a)zomojo.com

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[regresssion testing] freeze with gcc3.3.4 and gcc4.01
by Matt Hurd 05 Sep '05

05 Sep '05

I'm still failing to complete a regression test cycle. Gcc goes into never never land compiling for over an hour and doesn't come back. Others seem to run these ok, so I must be doing something wrong. converter_test is the one throwing the wobbly. Any ideas? matt _____________________________________ bjam.log output at the __long__ compile bit mkdir "/zomojo/regression_boost/results/bin/boost/libs/numeric/conversion/test/converter_test.test/gcc/debug" gcc-C++-action /zomojo/regression_boost/results/bin/boost/libs/numeric/conversion/test/converter_test.test/gcc/debug/converter_test.o set -e "g++" -c -Wall -ftemplate-depth-255 -g -O0 -fno-inline -I"/zomojo/regression_boost/results/bin/boost/libs/numeric/conversion/test" -I "/zomojo/regression_boost/boost" -o "/zomojo/regression_boost/results/bin/boost/libs/numeric/conversion/test/converter_test.test/gcc/debug/converter_test.o" "/zomojo/regression_boost/boost/libs/numeric/conversion/test/converter_test.cpp" "/usr/bin/objcopy" --set-section-flags .debug_str=contents,debug "/zomojo/regression_boost/results/bin/boost/libs/numeric/conversion/test/converter_test.test/gcc/debug/converter_test.o"

1 0

asio on Win32 - failing tests
by Roland Schwarz 05 Sep '05

05 Sep '05

I was just about trying out asio on Windows. I compiled as described, and tried to run the checks as: nmake -f Makefile.msc check and received: INFO: deadline_timer_test started INFO: deadline_timer_test ended with exit code 0 INFO: demuxer_test started INFO: demuxer_test ended with exit code 0 INFO: datagram_socket_test started INFO: datagram_socket_test ended with exit code 0 INFO: error_handler_test started INFO: error_handler_test ended with exit code 0 INFO: fixed_buffer_test started INFO: fixed_buffer_test ended with exit code 0 INFO: ipv4_host_resolver_test started FAIL: tests\unit\ipv4_host_resolver_test.cpp(88):test_if_hosts_equivalent(h1, h3) FAIL: tests\unit\ipv4_host_resolver_test.cpp(106):test_if_hosts_equivalent(h1, h7) INFO: ipv4_host_resolver_test ended with exit code 1 Is there anything I am missing? Or is this a known issue? Regards, Roland

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Boost.Python and slightly more tricky inheritance
by Vladimir Pozdyayev 05 Sep '05

05 Sep '05

Greetings. 1. First, about a bug (Boost 1.33.0, MSVC 7.1): After exporting void test1( const char * ) { } void test2( std::string ) { } we get an assertion failure _BLOCK_TYPE_IS_VALID( ... ) on std::strings longer than a dozen of characters: test1( 'hello' ) # OK test2( 'hello' ) # OK test1( 'how do you do, tell me please' ) # OK test2( 'how do you do, tell me please' ) # failure 2a. From `Exposing Classes' tutorial section: "If Base is polymorphic, Derived objects which have been passed to Python via a pointer or reference to Base can be passed where a pointer or reference to Derived is expected." Now, that's a great feature, but I couldn't help noticing that what Boost.Python actually does, is even more useful: not only such pointers can be passed instead of Derived ones, but their Python counterparts _are_ fully qualified Derived representations, with all the methods and everything. Probably worth mentioning in dox that way. 2b. Now, suppose we have one more derived class: class Base { ... }; class Derived: public Base { ... }; class HiddenImplementation: public Derived { ... }; with Derived being no more than an interface. Naturally, we don't want to export HiddenImplementation to Python, but still want to retain automatic conversions from Base* to Derived* whenever pointer to HiddenImplementation object is passed to Python. Any way to do this? Without hack-ins? I was able to trick the system by defining the fake empty implemetation class class HiddenImplementation: public Derived { }; right before the BOOST_PYTHON_MODULE and exporting it out there, but this kind of `solution' really annoys me. And I don't understand why it works, either :) . Oh, and it's only a partial solution, too: we do not have to access the real implementation class, but we still have to export something. Comments? -- TIA, Vladimir mailto:ardatur@mail.ru

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