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[Thread] Timed join returning true before thread terminated
by John Rocha 16 Mar '12

16 Mar '12

Hello, I'm working on a multi-threaded application that uses boost threads. The threads are deployed in a cascading mechanism such as: Main thread creates thread1 thread 1 creates threads 2, 3 and 4 thread 2 creates threads 5-14 The shutdown mechanism is to send a thread interrupt and then do a timed join to wait for the child thread[s] to finish their shutdown. So Main sends a thread interrupt to thread1, and then waits for X seconds thread 1 sends a thread interrupt to thread 2, and does a timed wait, then thread 3 and wait then thread 4 and wait thread 2 does the same for each of its children: send a thread interrupt and then wait. The problem is, that on rare occasions (1 out of 474 attempts in my last test cycle), thread 1 will return early from the timed_join, and it returns true, indicating the child thread is dead -- but it's not. I have timed logging that shows when a specific threads, shutdown activities start and stop, and I can see that thread 1 isn't waiting 10 seconds for the child to exit, and I can see the child is still running. Any suggestions for this? The only thing I can think of right now is that maybe thread1 is getting an interrupt for something that is causing it to leave it's timed_join early? I haven't looked into the boost code for this yet. I'm hoping that this is something others have encountered and already solved? Or maybe other debugging tips could be provided? Thanks in advance, -=John

4 15

bjam hangs for boost.python quickstart on mac ox
by Harry Griff 16 Mar '12

16 Mar '12

Hi, I have downloaded boost_1_49_0 to my Mac with OS X 10.5.8. I then ran: In the home folder I have: using python : 3.1 : /Library/Frameworks/Python.framework/Versions/3.1/bin/python3.1 ; In user-config.jam. I then ran the following: *** *** Start Screen dump 1 *** $ ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1599 targets... ...updating 2 targets... darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib Undefined symbols: "_PyFile_AsFile", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_FromFormat", referenced from: boost::python::converter::rvalue_from_python_stage2(_object*, boost::python::converter::rvalue_from_python_stage1_data&, boost::python::converter::registration const&)in from_python.o boost::python::converter::(anonymous namespace)::throw_no_lvalue_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::(anonymous namespace)::lvalue_result_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::registration::to_python(void const volatile*) constin registry.o _enum_repr in enum.o _enum_repr in enum.o "_PyClass_Type", referenced from: _PyClass_Type$non_lazy_ptr in function.o "_PyNumber_Divide", referenced from: boost::python::api::operator/(boost::python::api::object const&, boost::python::api::object const&)in object_operators.o "_PyString_FromStringAndSize", referenced from: boost::python::numeric::(anonymous namespace)::load(bool) in numeric.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::converter::do_return_to_python(char)in builtin_converters.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)in function_doc_signature.o "_PyInt_Type", referenced from: _PyInt_Type$non_lazy_ptr in enum.o "_PyString_FromString", referenced from: boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::converter::do_return_to_python(char const*)in builtin_converters.o "_PyInt_AsLong", referenced from: boost::python::detail::list_base::count(boost::python::api::object const&) constin list.o boost::python::detail::list_base::index(boost::python::api::object const&) constin list.o boost::python::detail::list_base::insert(boost::python::api::object const&, boost::python::api::object const&)in list.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::isupper() constin str.o boost::python::detail::str_base::istitle() constin str.o boost::python::detail::str_base::isspace() constin str.o boost::python::detail::str_base::islower() constin str.o boost::python::detail::str_base::isdigit() constin str.o boost::python::detail::str_base::isalpha() constin str.o boost::python::detail::str_base::isalnum() constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::endswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&) constin str.o _instance_new in class.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<int, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<int> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<long, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<long> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<signed char, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<signed char> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<short, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<short> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyNumber_InPlaceDivide", referenced from: boost::python::api::operator/=(boost::python::api::object&, boost::python::api::object const&)in object_operators.o "_PyString_InternFromString", referenced from: _function_get_name in function.o "_PyString_Size", referenced from: boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyFile_FromString", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_Type", referenced from: _PyString_Type$non_lazy_ptr in str.o "_PyInt_FromLong", referenced from: boost::python::numeric::aux::array_base::argmin(long)in numeric.o boost::python::numeric::aux::array_base::argmax(long)in numeric.o boost::python::numeric::aux::array_base::argsort(long)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, boost::python::api::object, long>(_object*, boost::python::api::object const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::list_base::pop(long)in list.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, boost::python::api::object>(_object*, long const&, boost::python::api::object const&, boost::type<boost::python::api::object>*)in list.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::export_values() in enum.o boost::python::objects::enum_base::export_values() in enum.o _object* boost::python::api::object_base_initializer<unsigned int>(unsigned int const&)in enum.o _object* boost::python::api::object_base_initializer<unsigned long>(unsigned long const&)in class.o boost::python::objects::function_doc_signature_generator::parameter_string(boost::python::objects::py_function const&, unsigned long, boost::python::api::object, bool)in function_doc_signature.o boost::python::objects::function_doc_signature_generator::pretty_signature(boost::python::objects::function const*, unsigned long, bool)in function_doc_signature.o boost::python::api::object::object<int>(int const&)in function_doc_signature.o boost::python::api::proxy<boost::python::api::slice_policies> boost::python::api::object_operators<boost::python::api::object>::slice<int, boost::python::api::slice_nil>(int const&, boost::python::api::slice_nil const&)in function_doc_signature.o "_Py_InitModule4", referenced from: boost::python::detail::init_module(char const*, void (*)())in module.o "_PyString_AsString", referenced from: _enum_repr in enum.o _enum_repr in enum.o _enum_repr in enum.o boost::python::converter::(anonymous namespace)::convert_to_cstring(_object*) in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o ld: symbol(s) not found collect2: ld returned 1 exit status "g++" -dynamiclib -Wl,-single_module -install_name "libboost_python3.dylib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/config" -o "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/numeric.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/list.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/long.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/dict.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/tuple.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/str.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/slice.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/from_python.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/registry.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/type_id.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/enum.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/class.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/inheritance.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/life_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/pickle_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/errors.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/module.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/builtin_converters.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/arg_to_python_base.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/stl_iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_protocol.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_operators.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/wrapper.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/import.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/exec.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function_doc_signature.o" -lpython3.1 -headerpad_max_install_names -Wl,-dead_strip -no_dead_strip_inits_and_terms ...failed darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib... ...skipped <pstage/lib>libboost_python3.dylib for lack of <pbin.v2/libs/python/build/darwin-4.0.1/release/threading-multi>libboost_python3.dylib... ...failed updating 1 target... ...skipped 1 target... *** *** End Screen dump 1 *** So I changed to 2.7 in the user config file and got: *** *** Start Screen dump 2 *** ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1597 targets... The Boost C++ Libraries were successfully built! The following directory should be added to compiler include paths: /Users/me/Desktop/boost_1_49_0 The following directory should be added to linker library paths: /Users/me/Desktop/boost_1_49_0/stage/lib *** *** End Screen dump 2 *** So that seemed to work. I then entered: *** *** Start Screen dump 3 *** $cd libs/python/example/quickstart/ $../../../../bjam toolset=darwin --verbose-test test ...patience... ...patience... ...found 1680 targets... ...updating 17 targets... common.mkdir bin common.mkdir bin/test_embed.test common.mkdir bin/test_embed.test/darwin-4.0.1 common.mkdir bin/test_embed.test/darwin-4.0.1/debug common.mkdir bin/darwin-4.0.1 common.mkdir bin/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/embedding.o darwin.link bin/darwin-4.0.1/debug/embedding testing.capture-output bin/test_embed.test/darwin-4.0.1/debug/test_embed.run ====== BEGIN OUTPUT ====== registering extension module embedded_hello... defining Python class derived from Base... testing derived class from C++... success! running file script.py... Hello World ! success! intentionally causing a python exception... Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'unknown' is not defined No errors detected. EXIT STATUS: 0 ====== END OUTPUT ====== **passed** bin/test_embed.test/darwin-4.0.1/debug/test_embed.test common.mkdir bin/test_ext.test common.mkdir bin/test_ext.test/darwin-4.0.1 common.mkdir bin/test_ext.test/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/extending.o darwin.link.dll bin/darwin-4.0.1/debug/extending.so *** *** End Screen dump 3 *** It hangs on the last line so I have to cancel it. I then ran: *** *** Start Screen dump 4 *** $ python2.7 test_extending.py Trying: from extending import * Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 6, in test_extending Failed example: from extending import * Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[0]>", line 1, in <module> from extending import * ImportError: No module named extending Trying: hi = hello('California') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 7, in test_extending Failed example: hi = hello('California') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[1]>", line 1, in <module> hi = hello('California') NameError: name 'hello' is not defined Trying: hi.greet() Expecting: 'Hello from California' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 8, in test_extending Failed example: hi.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[2]>", line 1, in <module> hi.greet() NameError: name 'hi' is not defined Trying: invite(hi) Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 10, in test_extending Failed example: invite(hi) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[3]>", line 1, in <module> invite(hi) NameError: name 'invite' is not defined Trying: hi.invite() Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 12, in test_extending Failed example: hi.invite() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[4]>", line 1, in <module> hi.invite() NameError: name 'hi' is not defined Trying: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 15, in test_extending Failed example: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[5]>", line 1, in <module> class wordy(hello): NameError: name 'hello' is not defined Trying: hi2 = wordy('Florida') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 19, in test_extending Failed example: hi2 = wordy('Florida') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[6]>", line 1, in <module> hi2 = wordy('Florida') NameError: name 'wordy' is not defined Trying: hi2.greet() Expecting: 'Hello from Florida, where the weather is fine' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 20, in test_extending Failed example: hi2.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[7]>", line 1, in <module> hi2.greet() NameError: name 'hi2' is not defined Trying: invite(hi2) Expecting: 'Hello from Florida! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 22, in test_extending Failed example: invite(hi2) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[8]>", line 1, in <module> invite(hi2) NameError: name 'invite' is not defined 1 items had no tests: test_extending.run ********************************************************************** 1 items had failures: 9 of 9 in test_extending 9 tests in 2 items. 0 passed and 9 failed. ***Test Failed*** 9 failures. *** *** End Screen dump 4 *** If I enter bin/darwin-4.0.1/debug, I get this for ls -al: mes-computer-444:debug me$ ls -al total 2688 drwxr-xr-x 6 me me 204 Mar 9 11:36 . drwxr-xr-x 3 me me 102 Mar 9 11:36 .. -rwxr-xr-x 1 barrygriffin me 164080 Mar 9 11:36 embedding -rw-r--r-- 1 me me 472992 Mar 9 11:36 embedding.o -rw-r--r-- 1 me me 530060 Mar 9 11:36 extending.o -rwxr-xr-x 1 me me 199076 Mar 9 11:36 extending.so Why am I hanging? I'd like to get python3 to work with boost but maybe its best to fix the hanging problem first. Thanks, Barry

1 0

conditionnal define
by Marc-Antoine ARNAUD 16 Mar '12

16 Mar '12

Hello, I'm using boost BJam to build my project with externals librairies. And I need to define variables if I found headers on the machine. How can we do that ? project : requirements <include>. <define>FLAG_NEEDED_TO_DEFINE => I need to define only if I found header. ; lib library : [ glob *.cpp ] ; Thanks, Marc-Antoine* *ARNAUD

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Re: [Boost-users] Newbie Question - Errors if i want to compile
by Simone Piacco 16 Mar '12

16 Mar '12

Hi everybody. I solved my problem. It was a problem regarding -L directive. Using terminal and -ls command I arrived to the right path and all was working Thanks to all answered me. Simone

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[MPL] Generating multi-index container indices based on MPL tag dispatching
by Peter Nyssen 16 Mar '12

16 Mar '12

Hi all, this is a follow-up of my question of yesterday (Fold a vector of pairs). The example here is a lot more elaborate and more like the final code I'd like to achieve. I still get errors when compiling the code below related the use of mpl::second<mpl::_2>. I'm trying to generate a multi-index container type that will store objects generated using inherit_linearly. The objects contain a number of attributes (all int in this example) based on a typelist of attribute tags. I want to generate this container by providing the object type and a index_list as shown here: http://www.boost.org/doc/libs/1_49_0/libs/multi_index/doc/tutorial/techniqu… I'm trying to compose the index_list using some kind of MPL tag dispatch based on the unique & non_unique tags to generate unique & non_unique ordered indices for the container. It's clear to me that the errors have to do with the MPL placeholder expressions used in the 3 types passed to the multi_index::member template class. This is confirmed because if I replace these 3 template parameters by the ones which are comment out just below the program compiles fine. From my previous question I get that the placeholder expressions need to be evaluated lazily (so no ::type or ::value - obviously the code below is thus incorrect). I've been reading section 3.3 of the MPL book on 'Handling Placeholders' a couple of times and from this it seems I need 3 metafunctions that call apply<> on the passed placeholder expressions and which would return each of the types to be passed to multi_index::member<>? I've been trying different approaches but none have been successful... I'm still not grasping how to handle these placeholder expressions... I hope the great minds on this list can bring some light in my clouded mind... Thanks & kind regards, Peter //------------------------------------------------- #include <boost/mpl/at.hpp> #include <boost/mpl/if.hpp> #include <boost/mpl/inherit.hpp> #include <boost/mpl/inherit_linearly.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> #include <boost/multi_index_container.hpp> #include <boost/multi_index/indexed_by.hpp> #include <boost/multi_index/member.hpp> #include <boost/multi_index/ordered_index.hpp> namespace mpl = boost::mpl; namespace bmi = boost::multi_index; enum attributeTags { ATTR_1, ATTR_2, ATTR_3 }; template <int attrId> struct AttrTraits { typedef int type; }; template <typename AttrT> struct Attribute { typedef AttrTraits<AttrT::value> ATraits; typename ATraits::type value; }; template <typename AttrList> struct Object : public boost::mpl::inherit_linearly< AttrList, boost::mpl::inherit<boost::mpl::_1, Attribute<boost::mpl::_2> > >::type {}; struct unique {}; struct non_unique {}; template <typename T> struct is_unique : boost::false_type {}; template <> struct is_unique<unique> : boost::true_type {}; template<typename ObjectT, typename IndicesMap> struct ObjectContainer { typedef typename mpl::fold< IndicesMap, mpl::vector<>, mpl::if_< is_unique<mpl::first<mpl::_2> >, mpl::push_back< mpl::_1, bmi::ordered_unique< bmi::member< Attribute<boost::mpl::second<boost::mpl::_2> >, AttrTraits<boost::mpl::second<boost::mpl::_2>::value>::type, &Attribute<boost::mpl::second<boost::mpl::_2> >::value // Attribute<boost::mpl::int_<0> >, // int, // &Attribute<boost::mpl::int_<0> >::value > > >, mpl::push_back< mpl::_1, bmi::ordered_non_unique< bmi::member< Attribute<boost::mpl::second<boost::mpl::_2> >, AttrTraits<boost::mpl::second<boost::mpl::_2>::value>::type, &Attribute<boost::mpl::second<boost::mpl::_2> >::value // Attribute<boost::mpl::int_<1> >, // int, // &Attribute<boost::mpl::int_<1> >::value > > > > >::type IndexList; typedef boost::multi_index_container<ObjectT, IndexList> Container_t; Container_t Container; }; int main() { typedef boost::mpl::vector< boost::mpl::int_<ATTR_1>, boost::mpl::int_<ATTR_2>, boost::mpl::int_<ATTR_3> > AttributeList_1; typedef Object<AttributeList_1> Object_1; typedef mpl::vector< mpl::pair<unique, mpl::int_<ATTR_1> >, mpl::pair<non_unique, mpl::int_<ATTR_2> > > Object_1_Indicex; ObjectContainer<Object_1, Object_1_Indicex> Object1Container; return 0; } //-------------------------------------------------

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[Range] and [MemberFunction]
by Robert Jones 16 Mar '12

16 Mar '12

In the documentation of Boost.MemberFunction it suggests that a useful purpose for it would be to implement overloads of std algorithms, and indeed other similar algorithms such that the final callable parameter could be a simple pointer to member. struct X { bool method( ); }; std::vector<X> xs; for_each( xs.begin( ), xs.end( ), & X::method ); or from Boost.Range boost::for_each( xs, &X::method ); Is such a facility implemented anywhere in Boost? Where I'm really going with this, is that I'd like to see versions of Boost.Range adaptors which support the same facility, so I can say, for example for_each( xs | filtered( & X::method ), doSomething ); rather than, as at present, for_each ( xs | filtered( bind( & X::method, _1 ) ), doSomething ); and similarly for transformed. Thanks, - Rob.

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Newbie Question - Errors if i want to compile
by Simone Piacco 15 Mar '12

15 Mar '12

Hi everybody. I'm a new user of boost c++. I tried to install it on my Mac. I followed "Getting Started on Unix variant" guide which I found on boost.org site. The first part is ok, I tried to compile and execute the simple example and i had no problem, it runs. After it I tried to build and install the separately-compiled Boost libraries, I copied the example in my editor and I typed on terminal: c++ -I /Users/Simone/Documents/workspace/boost_1_49_0 main.cpp -o main\ ~/boost/stage/lib/libboost_regex-darwin-mt-d-1_49_0.a but the result was: Undefined symbols: "boost::re_detail::get_mem_block()", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::extend_stack()in ccmv1in1.o "boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_match()in ccmv1in1.o "boost::re_detail::get_default_error_string(boost::regex_constants::error_type)", referenced from: boost::re_detail::cpp_regex_traits_implementation<char>::error_string(boost::regex_constants::error_type) constin ccmv1in1.o boost::re_detail::cpp_regex_traits_implementation<char>::error_string(boost::regex_constants::error_type) constin ccmv1in1.o "boost::re_detail::put_mem_block(void*)", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_extra_block(bool)in ccmv1in1.o "boost::re_detail::raise_runtime_error(std::runtime_error const&)", referenced from: void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)in ccmv1in1.o "boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match()", referenced from: bool boost::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)in ccmv1in1.o "boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::perl_matcher(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >)in ccmv1in1.o "boost::re_detail::cpp_regex_traits_implementation<char>::transform_primary(char const*, char const*) const", referenced from: boost::cpp_regex_traits<char>::transform_primary(char const*, char const*) constin ccmv1in1.o "boost::re_detail::cpp_regex_traits_implementation<char>::transform(char const*, char const*) const", referenced from: boost::cpp_regex_traits<char>::transform(char const*, char const*) constin ccmv1in1.o "boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)", referenced from: boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign(char const*, char const*, unsigned int)in ccmv1in1.o ld: symbol(s) not found collect2: ld returned 1 exit status Even if I used the other way to compile, ("separately specify a directory to search (with -Ldirectory)"), the result is always the same. What can I do?? Thank You Simone

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Re: [Boost-users] Graph: writing graph properties to graphml file
by Juerg Tschirren 15 Mar '12

15 Mar '12

That did the trick! Thank you very much Jeremiah for all your help! Juerg On Thu, 15 Mar 2012, Jeremiah Willcock wrote: > On Thu, 15 Mar 2012, Juerg Tschirren wrote: > > Thanks Jeremiah for the prompt answer. Sorry, I forgot to mention, your > > suggested change to graphml.hpp was the first thing I tried yesterday. > > Everything compiles with your suggested change, but the result is a > > runtime error (boost::any_cast exception). As far as I can tell the > > problem origins in line 292 in graphml.hpp. But so far I wasn't able to > > wrap my mind around that dynamic_property_map and I couldn't quite > > figure out yet what is going on and what is supposed to be going on. > Please try the version of graphml.hpp that is in the trunk now using > Graph* as your key type. > -- Jeremiah Willcock

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[heap] pending/mutable_queue.hpp vs heap/mutable_queue.hpp
by Philipp Moeller 15 Mar '12

15 Mar '12

Currently there are two mutable_queue implementations in Boost. One in pending (not really official) and another one in the newly released Heap library. Currently, some of our code currently using mutable_queue from pending. Has somebody already switched between both and found performance differences or can I expect them to perform nearly the same? Will mutable_queue in pending be removed since there is now an official library? Cheers, Philipp Moeller GeometryFactory

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Re: [Boost-users] filesystem path constructor fails when passing in std::string (Visual studio project)
by Sillence, Martin (GE Oil & Gas) 15 Mar '12

15 Mar '12

> The simple code: > std::string str("d:\\New folder"); > bfs::path base(str); > Is causing an illegal memory access giving the following stack trace: > msvcp90d.dll!std::basic_string<char,std::char_traits<char>,std::_DebugHe apAllocator<char> >::assign(const std::basic_string<char,std::char_traits<char>,std::_DebugHeapAllocator<c har> > & _Right="*") Line 1052 C++ > msvcp90d.dll!std::basic_string<char,std::char_traits<char>,std::_DebugHe apAllocator<char> >::operator=(const std::basic_string<char,std::char_traits<char>,std::_DebugHeapAllocator<c har> > & _Right="*") Line 927 C++ OK I guess a bit too trigger happy with this post. I was retesting and release works but debug doesn't... I'm guessing this is due to the fact we have iterator optimisation for release and not for debug e.g. _HAS_ITERATOR_DEBUGGING=0 For some reason debug is linking or pulling in the release library of boost, now I know that I guess it's as good as solved. Sorry for the post, hope it proves useful to someone in future. Regards, M

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