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Details

Type: User Story
Resolution: Done
Priority: P1: Critical
Fix Version/s: 6.0.0
Affects Version/s: None
Component/s: Build System
Labels:
None

Platform/s:

macOS
Epic Link:
CMake Port: Milestone 1
Commits:
890ddd254087da9a6008e9fe5639ffd3a35f1b8b (qt/qtbase/wip/cmake)

Description

Both me and liaqi are sometimes experiencing hangs while building. Apparently it happened in the Coin test runs as well.

It seems to be automoc hanging.
Attaching a process sample from Activity Monitor.

Call graph:
    2931 Thread_1040072   DispatchQueue_1: com.apple.main-thread  (serial)
    + 2931 start  (in libdyld.dylib) + 1  [0x7fff5d19fed9]
    +   2931 main  (in cmake) + 375  [0x109350497]  cmakemain.cxx:199
    +     2931 do_command(int, char const* const*)  (in cmake) + 1240  [0x109353768]  cmakemain.cxx:116
    +       2931 cmcmd::ExecuteCMakeCommand(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > >&)  (in cmake) + 47450  [0x10937294a]  cmcmd.cxx:1027
    +         2931 cmQtAutoGenerator::Run(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)  (in cmake) + 2898  [0x109a761a2]  cmQtAutoGenerator.cxx:706
    +           2931 cmQtAutoGeneratorMocUic::Process()  (in cmake) + 61  [0x109b0836d]  cmQtAutoGeneratorMocUic.cxx:1513
    +             2931 uv_run  (in cmake) + 207  [0x10a48e6df]  core.c:374
    +               2931 uv__io_poll  (in cmake) + 1995  [0x10a4a993b]  kqueue.c:214
    +                 2931 kevent  (in libsystem_kernel.dylib) + 10  [0x7fff5d2df716]
    2931 Thread_1040114
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092
    +           2931 cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
    +             2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +               2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                 2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040117
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 143  [0x109af33bf]  cmQtAutoGeneratorMocUic.cxx:1094
    +           2931 cmQtAutoGeneratorMocUic::JobMocT::Process(cmQtAutoGeneratorMocUic::WorkerT&)  (in cmake) + 4575  [0x109ae78df]  cmQtAutoGeneratorMocUic.cxx:698
    +             2931 cmQtAutoGeneratorMocUic::JobMocT::GenerateMoc(cmQtAutoGeneratorMocUic::WorkerT&)  (in cmake) + 4831  [0x109aee3ff]  cmQtAutoGeneratorMocUic.cxx:856
    +               2931 cmQtAutoGeneratorMocUic::WorkerT::RunProcess(cmQtAutoGen::GenT, cmQtAutoGenerator::ProcessResultT&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)  (in cmake) + 2739  [0x109ae6623]  cmQtAutoGeneratorMocUic.cxx:1083
    +                 2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +                   2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                     2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040120
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092
    +           2931 cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
    +             2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +               2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                 2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040122
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 143  [0x109af33bf]  cmQtAutoGeneratorMocUic.cxx:1094
    +           2931 cmQtAutoGeneratorMocUic::JobMocT::Process(cmQtAutoGeneratorMocUic::WorkerT&)  (in cmake) + 4575  [0x109ae78df]  cmQtAutoGeneratorMocUic.cxx:698
    +             2931 cmQtAutoGeneratorMocUic::JobMocT::GenerateMoc(cmQtAutoGeneratorMocUic::WorkerT&)  (in cmake) + 4831  [0x109aee3ff]  cmQtAutoGeneratorMocUic.cxx:856
    +               2931 cmQtAutoGeneratorMocUic::WorkerT::RunProcess(cmQtAutoGen::GenT, cmQtAutoGenerator::ProcessResultT&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)  (in cmake) + 2739  [0x109ae6623]  cmQtAutoGeneratorMocUic.cxx:1083
    +                 2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +                   2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                     2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040123
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092
    +           2931 cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
    +             2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +               2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                 2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040124
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092
    +           2931 cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
    +             2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +               2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                 2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040127
    + 2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
    +   2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
    +     2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
    +       2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
    +         2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092
    +           2931 cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
    +             2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
    +               2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
    +                 2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]
    2931 Thread_1040128
      2931 thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
        2931 _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
          2931 _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
            2931 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
              2931 cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092
                2931 cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
                  2931 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
                    2931 _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
                      2931 __psynch_cvwait  (in libsystem_kernel.dylib) + 10  [0x7fff5d2dc7de]

Total number in stack (recursive counted multiple, when >=5):
        8       __psynch_cvwait  (in libsystem_kernel.dylib) + 0  [0x7fff5d2dc7d4]
        8       _pthread_body  (in libsystem_pthread.dylib) + 126  [0x7fff5d393305]
        8       _pthread_cond_wait  (in libsystem_pthread.dylib) + 724  [0x7fff5d396593]
        8       _pthread_start  (in libsystem_pthread.dylib) + 70  [0x7fff5d39626f]
        8       std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)  (in libc++.1.dylib) + 18  [0x7fff5a874bda]
        8       thread_start  (in libsystem_pthread.dylib) + 13  [0x7fff5d392415]
        8       void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (cmQtAutoGeneratorMocUic::WorkerT::*)(), cmQtAutoGeneratorMocUic::WorkerT*> >(void*)  (in cmake) + 661  [0x109b2def5]  type_traits:4369
        6       cmQtAutoGeneratorMocUic::WorkerSwapJob(std::__1::unique_ptr<cmQtAutoGeneratorMocUic::JobT, std::__1::default_delete<cmQtAutoGeneratorMocUic::JobT> >&)  (in cmake) + 822  [0x109af3db6]  cmQtAutoGeneratorMocUic.cxx:1797
        6       cmQtAutoGeneratorMocUic::WorkerT::Loop()  (in cmake) + 53  [0x109af3365]  cmQtAutoGeneratorMocUic.cxx:1092

Sort by top of stack, same collapsed (when >= 5):
        __psynch_cvwait  (in libsystem_kernel.dylib)        23448
        kevent  (in libsystem_kernel.dylib)        2931

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Fix automoc hangs when building

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