的std ::线程问题(std::thread problems)

2019-07-29 10:08发布

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我想我有一种非常糟糕的概念问题。 为什么我简单的得到了很多比赛条件误差与的valgrind。 首先，我认为这可能是一个错误，我在认为Linux的更新滚动发布将解决这个论坛，看到了......所以我现在的openSUSE tubleweed，100％的更新。 下面的代码搞乱有一些非常错误的： 

#include <iostream>
#include <thread>

using namespace std;

class FOO
{
public:
    void do_something ()
    {
        cout<<"cout somethin\n";
    }
};

int main ()
{
    FOO foo;
    std::thread t (&FOO::do_something,&foo);
    t.join();
}

当我做了

valgrind --tool=drd ./oncordia

我必须尝试5次以上，并且我收到以下错误： 

==6218== drd, a thread error detector
==6218== Copyright (C) 2006-2010, and GNU GPL'd, by Bart Van Assche.
==6218== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info
==6218== Command: ./oncordia
==6218== 
cout somethin
==6218== Conflicting store by thread 1 at 0x05b5d050 size 8
==6218==    at 0x418E62: std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >::~_Impl() (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x419099: std::_Sp_destroy_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >::operator()(std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*) const (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x418EDC: std::_Sp_counted_deleter<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*, std::_Sp_destroy_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, (__gnu_cxx::_Lock_policy)2>::_M_dispose() (shared_ptr_base.h:351)
==6218==    by 0x4180B7: std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() (shared_ptr_base.h:146)
==6218==    by 0x417F62: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() (shared_ptr_base.h:551)
==6218==    by 0x417E99: std::__shared_ptr<std::thread::_Impl_base, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() (shared_ptr_base.h:751)
==6218==    by 0x417EB3: std::shared_ptr<std::thread::_Impl_base>::~shared_ptr() (shared_ptr.h:93)
==6218==    by 0x418037: std::thread::thread<void (FOO::*)(), FOO*>(void (FOO::*&&)(), FOO*&&) (thread:135)
==6218==    by 0x417CCB: main (main.cpp:18)
==6218== Address 0x5b5d050 is at offset 32 from 0x5b5d030. Allocation context:
==6218==    at 0x4C2AAB7: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_drd-amd64-linux.so)
==6218==    by 0x418A5F: __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, (__gnu_cxx::_Lock_policy)2> >::allocate(unsigned long, void const*) (new_allocator.h:92)
==6218==    by 0x418846: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr_base.h:517)
==6218==    by 0x418775: std::__shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr_base.h:986)
==6218==    by 0x4186C1: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >::shared_ptr<std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:313)
==6218==    by 0x4185A3: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::allocate_shared<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:531)
==6218==    by 0x418360: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::make_shared<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:547)
==6218==    by 0x4181BF: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::thread::_M_make_routine<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (thread:194)
==6218==    by 0x418005: std::thread::thread<void (FOO::*)(), FOO*>(void (FOO::*&&)(), FOO*&&) (thread:135)
==6218==    by 0x417CCB: main (main.cpp:18)
==6218== Other segment start (thread 2)
==6218==    (thread finished, call stack no longer available)
==6218== Other segment end (thread 2)
==6218==    (thread finished, call stack no longer available)
==6218== 
==6218== Conflicting store by thread 1 at 0x05b5d050 size 8
==6218==    at 0x417EC6: std::thread::_Impl_base::~_Impl_base() (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x418E74: std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >::~_Impl() (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x419099: std::_Sp_destroy_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >::operator()(std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*) const (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x418EDC: std::_Sp_counted_deleter<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*, std::_Sp_destroy_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, (__gnu_cxx::_Lock_policy)2>::_M_dispose() (shared_ptr_base.h:351)
==6218==    by 0x4180B7: std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() (shared_ptr_base.h:146)
==6218==    by 0x417F62: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() (shared_ptr_base.h:551)
==6218==    by 0x417E99: std::__shared_ptr<std::thread::_Impl_base, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() (shared_ptr_base.h:751)
==6218==    by 0x417EB3: std::shared_ptr<std::thread::_Impl_base>::~shared_ptr() (shared_ptr.h:93)
==6218==    by 0x418037: std::thread::thread<void (FOO::*)(), FOO*>(void (FOO::*&&)(), FOO*&&) (thread:135)
==6218==    by 0x417CCB: main (main.cpp:18)
==6218== Address 0x5b5d050 is at offset 32 from 0x5b5d030. Allocation context:
==6218==    at 0x4C2AAB7: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_drd-amd64-linux.so)
==6218==    by 0x418A5F: __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, (__gnu_cxx::_Lock_policy)2> >::allocate(unsigned long, void const*) (new_allocator.h:92)
==6218==    by 0x418846: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr_base.h:517)
==6218==    by 0x418775: std::__shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr_base.h:986)
==6218==    by 0x4186C1: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >::shared_ptr<std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:313)
==6218==    by 0x4185A3: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::allocate_shared<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:531)
==6218==    by 0x418360: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::make_shared<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:547)
==6218==    by 0x4181BF: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::thread::_M_make_routine<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (thread:194)
==6218==    by 0x418005: std::thread::thread<void (FOO::*)(), FOO*>(void (FOO::*&&)(), FOO*&&) (thread:135)
==6218==    by 0x417CCB: main (main.cpp:18)
==6218== Other segment start (thread 2)
==6218==    (thread finished, call stack no longer available)
==6218== Other segment end (thread 2)
==6218==    (thread finished, call stack no longer available)
==6218== 
==6218== Conflicting load by thread 1 at 0x05b5d060 size 8
==6218==    at 0x417F4C: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() (shared_ptr_base.h:550)
==6218==    by 0x417E99: std::__shared_ptr<std::thread::_Impl_base, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() (shared_ptr_base.h:751)
==6218==    by 0x417EB3: std::shared_ptr<std::thread::_Impl_base>::~shared_ptr() (shared_ptr.h:93)
==6218==    by 0x417EDC: std::thread::_Impl_base::~_Impl_base() (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x418E74: std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >::~_Impl() (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x419099: std::_Sp_destroy_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >::operator()(std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*) const (in /home/ezequiel/projects/oncordia/build/oncordia)
==6218==    by 0x418EDC: std::_Sp_counted_deleter<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*, std::_Sp_destroy_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, (__gnu_cxx::_Lock_policy)2>::_M_dispose() (shared_ptr_base.h:351)
==6218==    by 0x4180B7: std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() (shared_ptr_base.h:146)
==6218==    by 0x417F62: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() (shared_ptr_base.h:551)
==6218==    by 0x417E99: std::__shared_ptr<std::thread::_Impl_base, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() (shared_ptr_base.h:751)
==6218==    by 0x417EB3: std::shared_ptr<std::thread::_Impl_base>::~shared_ptr() (shared_ptr.h:93)
==6218==    by 0x418037: std::thread::thread<void (FOO::*)(), FOO*>(void (FOO::*&&)(), FOO*&&) (thread:135)
==6218== Address 0x5b5d060 is at offset 48 from 0x5b5d030. Allocation context:
==6218==    at 0x4C2AAB7: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_drd-amd64-linux.so)
==6218==    by 0x418A5F: __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, (__gnu_cxx::_Lock_policy)2> >::allocate(unsigned long, void const*) (new_allocator.h:92)
==6218==    by 0x418846: std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >*, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr_base.h:517)
==6218==    by 0x418775: std::__shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr_base.h:986)
==6218==    by 0x4186C1: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >::shared_ptr<std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Sp_make_shared_tag, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:313)
==6218==    by 0x4185A3: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::allocate_shared<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::allocator<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > const&, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:531)
==6218==    by 0x418360: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::make_shared<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >, std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (shared_ptr.h:547)
==6218==    by 0x4181BF: std::shared_ptr<std::thread::_Impl<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> > > std::thread::_M_make_routine<std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)> >(std::_Bind_result<void, std::_Mem_fn<void (FOO::*)()> ()(FOO*)>&&) (thread:194)
==6218==    by 0x418005: std::thread::thread<void (FOO::*)(), FOO*>(void (FOO::*&&)(), FOO*&&) (thread:135)
==6218==    by 0x417CCB: main (main.cpp:18)
==6218== Other segment start (thread 2)
==6218==    (thread finished, call stack no longer available)
==6218== Other segment end (thread 2)
==6218==    (thread finished, call stack no longer available)
==6218== 
==6218== 
==6218== For counts of detected and suppressed errors, rerun with: -v

谢谢！！

Answer 1:

阅读出色的手册： http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug.html#debug.races

该代码是OK，Valgrind的不理解我们内部使用原子操作std::shared_ptr和错误地报告他们的比赛。



Answer 2:

COUT是资源和应互斥-ED（竞争条件，如果> 1个螺纹do_something（）或COUT的其他用途的）



文章来源: std::thread problems
标签： c++ multithreading c++11 valgrind std
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