December 2017 - Boost-users - lists.preview.boost.org

[interprocess] Determine size of managed_shared_memory
by Kai Benndorf 12 Oct '19

12 Oct '19

Hi all, I want to create a managed_shared_memory in exactly the size I needed. Therefore I do something like this: size = sizeof( common_managed_shared_memory ); size += sizeof( MyClassInSharedMem ); managed_shared_memory segment(create_only, "name", size ); MyClassInSharedMem allocates itself some memory by segment->allocate(). I added this also to the size, but get a boost::interprocess::bad_alloc exception on allocating this additional memory. Are there some magic bytes I forgot … [View More]

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boost::filtered_graph filtering on vertex color... if I only had a colormap
by Brian Davis 19 Jul '19

19 Jul '19

Lets say I have a graph g (of type graph_t) and a color map (boy I wish I had a colormap): typedef boost::property_map<graph_t, boost::vertex_color_t>::type color_map_t; or is it? auto indexmap = boost::get(boost::vertex_index, g); auto colors = boost::make_vector_property_map<boost::default_color_type>(indexmap); or maybe? auto indexmap = boost::get(boost::vertex_index, g); auto colors = boost::make_vector_property_map<boost::vertex_color_t>(indexmap); or possibly some … [View More]goop found on the internet? boost::make_iterator_property_map(color_map.begin(), boost::get(boost::vertex_index, data_->g), color_map[0]) or other internet goop? typedef boost::property_map<GraphType, boost::vertex_color_t>::type color_map_t; color_map_t colorMap; boost::color_map(colorMap)) or other internet goop?? std::vector<int> colorMap(num_vertices(g), boost::white_color); so confused... (certainly not surprised why bgl is not a part of stl) Can someone help explain the various types and ways of specifying colormaps and the logic for each way and means? and a function (if I could get that far without VS syntax highlighter going bonkers and gobs of compiler errors.. you know the type): make_pretty(g, colormap ) which colors the graph colormap and a filter struct for boost::filtered_graph<Graph, EdgePredicate, VertexPredicate> (where I wonder why if I only want to filter vertices I have to set boost::keep_all for EdgePredicate... sigh... I know the answer... and also know how long it found me to find/figure out boost::keep_all - and if you are looking for boost::keep_all and found it here... your welcome ;-) ) and modifying (probably incorrectly) boost::filtered_graph example to: template <typename ColorMap> struct vertex_color_filter_eq { vertex_color_filter_eq() { } vertex_color_filter_eq(ColorMap colormap/*, boost::default_color_type c*/) : m_colormap(colormap)/*, m_c(c)*/ { } template <typename Vertex> bool operator()(const Vertex& v) const { return 0 < get(m_colormap, v); //return c < get(m_colormap, v); } ColorMap m_colormap; //boost::default_color_type m_c; }; auto indexmap = boost::get(boost::vertex_index, g); auto colors = boost::make_vector_property_map<boost::default_color_type>(indexmap); // some where here I would call make_pretty(g, colors) typedef property_map<graph_t, boost::vertex_color_t>::type ColorMap_t; vertex_color_filter<ColorMap_t> filter(colors); // boost::filtered_graph<graph_t, boost::keep_all, VertexPredicate> boost::filtered_graph<graph_t, boost::keep_all, vertex_color_filter> fg(g, filter); // Later say if I could get it compile and better if it compiled and worked I could move on and auto color = boost::red_color; typedef property_map<graph_t, boost::vertex_color_t>::type ColorMap_t; vertex_color_filter<ColorMap_t> filter(colors, color); boost::filtered_graph<graph_t, boost::keep_all, vertex_color_filter> fg(g, filter); Maybe if I color them yellow, I can then reach the wizard pull back the curtain and ask how to create a color map... If I only had a color map. [View Less]

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[test] Use-after-free with --log_sink=file, reported by gcc 7.2
by Avi Kivity 23 Jan '18

23 Jan '18

When static destructors are called, as the program exits, we destroy boost::unit_test::(anonymous namespace)::s_log_impl()::the_inst. This has a member vector, m_log_formatter_data. When destroying the second member, we run an ios_base_all_saver destructor, which attempts to restore a stream's format, however that stream has already been deallocated. Maybe that stream is in another static destructor, which was not ordered wrt. this one? Or maybe it was destroyed even earlier, when … [View More]unit_test_main() exited. From ASan log, it loofs like the former. One static destructor is run from /usr/include/boost/test/impl/framework.ipp:459, while the other is run from /unit_test_log.ipp:122, so there is no ordering abong them. *** No errors detected ================================================================= ==1745==ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000016a8 at pc 0x0000015f8892 bp 0x7ffecdb0b720 sp 0x7ffecdb0b710 READ of size 8 at 0x6160000016a8 thread T0 #0 0x15f8891 in std::ios_base::width(long) /usr/include/c++/7/bits/ios_base.h:723 #1 0x161dea0 in boost::io::ios_base_all_saver::restore() /usr/include/boost/io/ios_state.hpp:340 #2 0x161dda6 in boost::io::ios_base_all_saver::~ios_base_all_saver() /usr/include/boost/io/ios_state.hpp:336 #3 0x168a22e in void boost::checked_delete<boost::io::ios_base_all_saver>(boost::io::ios_base_all_saver*) /usr/include/boost/core/checked_delete.hpp:34 #4 0x171b7c5 in boost::detail::sp_counted_impl_p<boost::io::ios_base_all_saver>::dispose() /usr/include/boost/smart_ptr/detail/sp_counted_impl.hpp:78 #5 0x58b2c4 in boost::detail::sp_counted_base::release() /usr/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp:109 #6 0x58b51e in boost::detail::shared_count::~shared_count() /usr/include/boost/smart_ptr/detail/shared_count.hpp:419 #7 0x161eadc in boost::shared_ptr<boost::io::ios_base_all_saver>::~shared_ptr() /usr/include/boost/smart_ptr/shared_ptr.hpp:337 #8 0x1589a8a in ~unit_test_log_data_helper_impl /usr/include/boost/test/impl/unit_test_log.ipp:87 #9 0x15f0891 in _Destroy<boost::unit_test::(anonymous namespace)::unit_test_log_data_helper_impl> /usr/include/c++/7/bits/stl_construct.h:98 #10 0x15eb8ad in __destroy<boost::unit_test::(anonymous namespace)::unit_test_log_data_helper_impl*> /usr/include/c++/7/bits/stl_construct.h:108 #11 0x15e32c7 in _Destroy<boost::unit_test::(anonymous namespace)::unit_test_log_data_helper_impl*> /usr/include/c++/7/bits/stl_construct.h:137 #12 0x15cd317 in _Destroy<boost::unit_test::(anonymous namespace)::unit_test_log_data_helper_impl*, boost::unit_test::(anonymous namespace)::unit_test_log_data_helper_impl> /usr/include/c++/7/bits/stl_construct.h:206 #13 0x15c0de2 in ~vector /usr/include/c++/7/bits/stl_vector.h:434 #14 0x158aa72 in ~unit_test_log_impl /usr/include/boost/test/impl/unit_test_log.ipp:122 #15 0x7f6c2db90b57 in __run_exit_handlers (/lib64/libc.so.6+0x3bb57) #16 0x7f6c2db90ba9 in exit (/lib64/libc.so.6+0x3bba9) #17 0x7f6c2db76010 in __libc_start_main (/lib64/libc.so.6+0x21010) #18 0x4172e9 in _start (/home/avi/seastar/build/debug/tests/memcached/test_ascii_parser_g+0x4172e9) 0x6160000016a8 is located 296 bytes inside of 544-byte region [0x616000001580,0x6160000017a0) freed by thread T0 here: #0 0x7f6c32c9d6d8 in operator delete(void*, unsigned long) (/lib64/libasan.so.4+0xe16d8) #1 0x1717f1e in boost::detail::sp_counted_impl_pd<std::basic_ofstream<char, std::char_traits<char> >*, boost::detail::sp_ms_deleter<std::basic_ofstream<char, std::char_traits<char> > > >::~sp_counted_impl_pd() /usr/include/boost/smart_ptr/detail/sp_counted_impl.hpp:127 #2 0xc1563b in boost::detail::sp_counted_base::destroy() /usr/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp:89 #3 0x58b3e4 in boost::detail::sp_counted_base::weak_release() /usr/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp:123 #4 0x58b2f3 in boost::detail::sp_counted_base::release() /usr/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp:110 #5 0x58b51e in boost::detail::shared_count::~shared_count() /usr/include/boost/smart_ptr/detail/shared_count.hpp:419 #6 0x15fe350 in boost::shared_ptr<std::basic_ofstream<char, std::char_traits<char> > >::~shared_ptr() /usr/include/boost/smart_ptr/shared_ptr.hpp:337 #7 0x160f9ec in boost::unit_test::runtime_config::stream_holder::~stream_holder() /usr/include/boost/test/unit_test_parameters.hpp:96 #8 0x16fb8fc in std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>::~pair() /usr/include/c++/7/bits/stl_pair.h:198 #9 0x16fb964 in void __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >::destroy<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >(std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>*) /usr/include/c++/7/ext/new_allocator.h:140 #10 0x16ef009 in void std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > > >::destroy<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >(std::allocator<std::_Rb_tree_node<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >&, std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>*) /usr/include/c++/7/bits/alloc_traits.h:487 #11 0x16d81bc in std::_Rb_tree<boost::unit_test::output_format, std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>, std::_Select1st<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >, std::less<boost::unit_test::output_format>, std::allocator<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >::_M_destroy_node(std::_Rb_tree_node<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >*) /usr/include/c++/7/bits/stl_tree.h:650 #12 0x16adac7 in std::_Rb_tree<boost::unit_test::output_format, std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>, std::_Select1st<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >, std::less<boost::unit_test::output_format>, std::allocator<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >::_M_drop_node(std::_Rb_tree_node<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >*) /usr/include/c++/7/bits/stl_tree.h:658 #13 0x167e5af in std::_Rb_tree<boost::unit_test::output_format, std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>, std::_Select1st<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >, std::less<boost::unit_test::output_format>, std::allocator<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >::_M_erase(std::_Rb_tree_node<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >*) /usr/include/c++/7/bits/stl_tree.h:1858 #14 0x1649760 in std::_Rb_tree<boost::unit_test::output_format, std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder>, std::_Select1st<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> >, std::less<boost::unit_test::output_format>, std::allocator<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >::~_Rb_tree() /usr/include/c++/7/bits/stl_tree.h:949 #15 0x160f988 in std::map<boost::unit_test::output_format, boost::unit_test::runtime_config::stream_holder, std::less<boost::unit_test::output_format>, std::allocator<std::pair<boost::unit_test::output_format const, boost::unit_test::runtime_config::stream_holder> > >::~map() /usr/include/c++/7/bits/stl_map.h:294 #16 0x161009b in boost::unit_test::framework::state::~state() /usr/include/boost/test/impl/framework.ipp:459 #17 0x7f6c2db90b57 in __run_exit_handlers (/lib64/libc.so.6+0x3bb57) previously allocated by thread T0 here: #0 0x7f6c32c9c158 in operator new(unsigned long) (/lib64/libasan.so.4+0xe0158) #1 0x169dfd6 in boost::detail::shared_count::shared_count<std::basic_ofstream<char, std::char_traits<char> >*, boost::detail::sp_ms_deleter<std::basic_ofstream<char, std::char_traits<char> > > >(std::basic_ofstream<char, std::char_traits<char> >*, boost::detail::sp_inplace_tag<boost::detail::sp_ms_deleter<std::basic_ofstream<char, std::char_traits<char> > > >) /usr/include/boost/smart_ptr/detail/shared_count.hpp:206 #2 0x16728db in boost::shared_ptr<std::basic_ofstream<char, std::char_traits<char> > >::shared_ptr<std::basic_ofstream<char, std::char_traits<char> >, boost::detail::sp_inplace_tag<boost::detail::sp_ms_deleter<std::basic_ofstream<char, std::char_traits<char> > > > >(std::basic_ofstream<char, std::char_traits<char> >*, boost::detail::sp_inplace_tag<boost::detail::sp_ms_deleter<std::basic_ofstream<char, std::char_traits<char> > > >) /usr/include/boost/smart_ptr/shared_ptr.hpp:372 #3 0x163c6e6 in boost::detail::sp_if_not_array<std::basic_ofstream<char, std::char_traits<char> > >::type boost::make_shared<std::basic_ofstream<char, std::char_traits<char> >>() /usr/include/boost/smart_ptr/make_shared_object.hpp:250 #4 0x15fe6ad in boost::unit_test::runtime_config::stream_holder::setup(boost::unit_test::basic_cstring<char const> const&) /usr/include/boost/test/unit_test_parameters.hpp:114 #5 0x155cd45 in boost::unit_test::framework::impl::setup_loggers() /usr/include/boost/test/impl/framework.ipp:861 #6 0x1561113 in boost::unit_test::framework::init(bool (*)(), int, char**) /usr/include/boost/test/impl/framework.ipp:1033 #7 0x1599d40 in boost::unit_test::unit_test_main(bool (*)(), int, char**) /usr/include/boost/test/impl/unit_test_main.ipp:189 #8 0x15c067f in main tests/test-utils.cc:84 #9 0x7f6c2db76009 in __libc_start_main (/lib64/libc.so.6+0x21009) SUMMARY: AddressSanitizer: heap-use-after-free /usr/include/c++/7/bits/ios_base.h:723 in std::ios_base::width(long) Shadow bytes around the buggy address: 0x0c2c7fff8280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c2c7fff8290: 00 00 00 00 06 fa fa fa fa fa fa fa fa fa fa fa 0x0c2c7fff82a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c2c7fff82b0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c2c7fff82c0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd =>0x0c2c7fff82d0: fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd fd fd 0x0c2c7fff82e0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c2c7fff82f0: fd fd fd fd fa fa fa fa fa fa fa fa fa fa fa fa 0x0c2c7fff8300: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c2c7fff8310: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c2c7fff8320: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==1745==ABORTING [View Less]

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Boost.Test: floating point comparison using absolute diference
by Georgios Sermaidis 30 Dec '17

30 Dec '17

Hi all, I am trying to find a way to make the boost unit test framework use an absolute difference for floating point comparison instead of the relative difference. I searched the documentation to try to find a suitable decorator but couldn’t find anything. Any help is much appreciated! #define BOOST_TEST_MODULE example #include <boost/test/included/unit_test.hpp> // boost::unit_test::tolerance uses relative difference and hence this test will pass; // is there anything I can use … [View More]

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Boost Unit Test: How to run only the enabled tests of a test suite?
by Maarten Anonymous 28 Dec '17

28 Dec '17

Hey, I'm looking for a way to only run the enabled unit tests of a tests suite. I have the following test suite: #define BOOST_TEST_MODULE decorator_predicate#include <boost/test/included/unit_test.hpp>namespace utf = boost::unit_test; BOOST_AUTO_TEST_SUITE(test_suite_1) BOOST_AUTO_TEST_CASE(bare_test){ BOOST_TEST(true);} BOOST_AUTO_TEST_CASE(enabled_test, * utf::enabled()){ BOOST_TEST(true);} BOOST_AUTO_TEST_CASE(disabled_test, * utf::disabled()){ BOOST_TEST(false);} … [View More]

2 1

[test] Set fixture for all tests
by Florian Lindner 28 Dec '17

28 Dec '17

Hello, can I set a fixture for the entire test tree, so that it is called before and after each test case? BOOST_FIXTURE_TEST_CASE does that for a test suite, but how can I apply it to all tests e.g. the master test suite? Thanks, Florian

2 1

shared mutex ( read -write lock) for fibers
by Cristian Lorenzetto 23 Dec '17

23 Dec '17

is there a read-write lock for fibers? fibers mutex works also in a "normal" Thread when the scheduler is not installed?

1 0

[Units] Name a unit for output
by Santiago Ospina 20 Dec '17

20 Dec '17

Hello boost-users, I would like to know if there is an equivalent for giving a name and a symbol given a unit in boost::units (maybe scaled from another one). I know the example of naming base units, however, it would imply I'd have to create a system and a conversion for every unit I want to implement. I tried to write it directly from the scaled version, like this: template<> struct scale_minute<60, static_rational<1> > … [View More]

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Re: [Boost-users] boost.msm and boost.mp11
by Didi JP BGF 19 Dec '17

19 Dec '17

Hi, there is this library that I use ... https://github.com/boost-experimental/sml ... Though I do not what the boost status is... On Tue, Dec 19, 2017 at 4:27 PM, Bogdan via Boost-users < boost-users(a)lists.boost.org> wrote: > Now that boost 1.66 includes mp11, is there a plan to upgrade the > meta-state > machine library (boost.msm) to something less macro dependent? > Thank you, > Bogdan > > _______________________________________________ > Boost-users … [View More]

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[release] Boost 1.66.0
by Daniel James 19 Dec '17

19 Dec '17

Release 1.66.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains N new libraries and numerous enhancements and bug fixes for existing libraries. For details, including download links, see <http://www.boost.org/users/news/version_1.66.0> You can also download directly from: <… [View More]

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