boost 库版本 1.53
Debian Linux 6.0 ( Linux 2.6.32-5-amd64 on x86_64 )
当 valgrind 日志包含大量警告时，很难测试自己的软件。
因此，我在没有任何更改的情况下构建了 HTTP server3 示例并在 Valgrind 下运行它。
请看一看。我错过了什么？
valgrind --tool=helgrind --log-file=valgrind.log ./server3 0.0.0.0 83 5 /root/server3
这是 Helgrind 日志（编辑为 30000 个正文字符限制，完整日志http://pastebin.com/ Vkbr9vsA）：
Helgrind, a thread error detector
Copyright (C) 2007-2012, and GNU GPL'd, by OpenWorks LLP et al.
Using Valgrind-3.9.0.SVN and LibVEX; rerun with -h for copyright info
Command: ./server3 0.0.0.0 83 5 /root/server3
Parent PID: 8662
Lock at 0x524F5E0 was first observed
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x5043388: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043498: boost::detail::set_current_thread_data(boost::detail::thread_data_base*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x504380E: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
by 0x5CE5A7C: clone (clone.S:112)
Possible data race during read of size 8 at 0x524F4E8 by thread #3
Locks held: none
at 0x5043356: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043498: boost::detail::set_current_thread_data(boost::detail::thread_data_base*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x504380E: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
by 0x5CE5A7C: clone (clone.S:112)
This conflicts with a previous write of size 8 by thread #2
Locks held: 1, at address 0x524F5E0
at 0x5043416: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043498: boost::detail::set_current_thread_data(boost::detail::thread_data_base*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x504380E: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
by 0x5CE5A7C: clone (clone.S:112)
----------------------------------------------------------------
Possible data race during read of size 4 at 0x524F60C by thread #3
Locks held: none
at 0x50496D4: boost::detail::get_once_per_thread_epoch() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043361: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043498: boost::detail::set_current_thread_data(boost::detail::thread_data_base*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x504380E: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
by 0x5CE5A7C: clone (clone.S:112)
This conflicts with a previous write of size 4 by thread #2
Locks held: none
at 0x525C27B: pthread_key_create (pthread_key_create.c:44)
by 0x525C82F: pthread_once (pthread_once.S:104)
by 0x50496D3: boost::detail::get_once_per_thread_epoch() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043361: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043498: boost::detail::set_current_thread_data(boost::detail::thread_data_base*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x504380E: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
----------------------------------------------------------------
Possible data race during read of size 8 at 0x524F4E8 by thread #1
Locks held: 1, at address 0x61A1E20
at 0x5043356: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043478: boost::detail::get_current_thread_data() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5047875: boost::detail::interruption_checker::interruption_checker(pthread_mutex_t*, pthread_cond_t*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5044002: boost::thread::join_noexcept() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x42660E: boost::thread::join() (thread.hpp:751)
by 0x4215C5: http::server3::server::run() (server.cpp:63)
by 0x41A65B: main (main.cpp:37)
----------------------------------------------------------------
Possible data race during read of size 4 at 0x524F60C by thread #1
Locks held: 1, at address 0x61A1E20
at 0x50496D4: boost::detail::get_once_per_thread_epoch() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043361: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043478: boost::detail::get_current_thread_data() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5047875: boost::detail::interruption_checker::interruption_checker(pthread_mutex_t*, pthread_cond_t*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5044002: boost::thread::join_noexcept() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x42660E: boost::thread::join() (thread.hpp:751)
by 0x4215C5: http::server3::server::run() (server.cpp:63)
by 0x41A65B: main (main.cpp:37)
This conflicts with a previous write of size 4 by thread #2
Locks held: none
at 0x525C27B: pthread_key_create (pthread_key_create.c:44)
by 0x525C82F: pthread_once (pthread_once.S:104)
by 0x50496D3: boost::detail::get_once_per_thread_epoch() (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043361: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x5043498: boost::detail::set_current_thread_data(boost::detail::thread_data_base*) (in /usr/lib/libboost_thread.so.1.53.0)
by 0x504380E: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
----------------------------------------------------------------
Possible data race during write of size 4 at 0x61A36B8 by thread #6
Locks held: none
at 0x4223B0: boost::asio::detail::epoll_reactor::descriptor_state::set_ready_events(unsigned int) (epoll_reactor.hpp:68)
by 0x4228A5: boost::asio::detail::epoll_reactor::run(bool, boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&) (epoll_reactor.ipp:430)
by 0x423629: boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service_thread_info&, boost::system::error_code const&) (task_io_service.ipp:396)
by 0x423302: boost::asio::detail::task_io_service::run(boost::system::error_code&) (task_io_service.ipp:153)
by 0x42393A: boost::asio::io_service::run() (io_service.ipp:59)
by 0x42EB34: boost::_mfi::mf0<unsigned long, boost::asio::io_service>::operator()(boost::asio::io_service*) const (mem_fn_template.hpp:49)
by 0x42EA72: unsigned long boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> >::operator()<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list0>(boost::_bi::type<unsigned long>, boost::_mfi::mf0<unsigned long, boost::asio::io_service>&, boost::_bi::list0&, long) (bind.hpp:243)
by 0x42E91E: boost::_bi::bind_t<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> > >::operator()() (bind_template.hpp:20)
by 0x42E65D: boost::detail::thread_data<boost::_bi::bind_t<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> > > >::run() (thread.hpp:117)
by 0x5043818: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
by 0x5256B4F: start_thread (pthread_create.c:304)
Address 0x61A36B8 is 24 bytes inside a block of size 160 alloc'd
at 0x4C28A3A: operator new(unsigned long) (vg_replace_malloc.c:298)
by 0x42806A: boost::asio::detail::epoll_reactor::descriptor_state* boost::asio::detail::object_pool_access::create<boost::asio::detail::epoll_reactor::descriptor_state>() (object_pool.hpp:35)
by 0x4267B8: boost::asio::detail::object_pool<boost::asio::detail::epoll_reactor::descriptor_state>::alloc() (object_pool.hpp:89)
by 0x4229E3: boost::asio::detail::epoll_reactor::allocate_descriptor_state() (epoll_reactor.ipp:512)
by 0x4223D4: boost::asio::detail::epoll_reactor::register_descriptor(int, boost::asio::detail::epoll_reactor::descriptor_state*&) (epoll_reactor.ipp:151)
by 0x424405: boost::asio::detail::reactive_socket_service_base::do_assign(boost::asio::detail::reactive_socket_service_base::base_implementation_type&, int, int const&, boost::system::error_code&) (reactive_socket_service_base.ipp:182)
by 0x42DA98: boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp>::assign(boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp>::implementation_type&, boost::asio::ip::tcp const&, int const&, boost::system::error_code&) (reactive_socket_service.hpp:117)
by 0x42D75C: boost::asio::stream_socket_service<boost::asio::ip::tcp>::assign(boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp>::implementation_type&, boost::asio::ip::tcp const&, int const&, boost::system::error_code&) (stream_socket_service.hpp:138)
by 0x42D263: boost::asio::basic_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >::assign(boost::asio::ip::tcp const&, int const&, boost::system::error_code&) (basic_socket.hpp:285)
by 0x42CAD7: boost::asio::detail::reactive_socket_accept_op_base<boost::asio::basic_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >, boost::asio::ip::tcp>::do_perform(boost::asio::detail::reactor_op*) (reactive_socket_accept_op.hpp:66)
by 0x409DE0: boost::asio::detail::reactor_op::perform() (reactor_op.hpp:40)
by 0x422C2F: boost::asio::detail::epoll_reactor::descriptor_state::perform_io(unsigned int) (epoll_reactor.ipp:622)
----------------------------------------------------------------
Possible data race during write of size 8 at 0x61A36A8 by thread #6
Locks held: none
at 0x410E9E: void boost::asio::detail::op_queue_access::next<boost::asio::detail::task_io_service_operation, boost::asio::detail::task_io_service_operation>(boost::asio::detail::task_io_service_operation*&, boost::asio::detail::task_io_service_operation*) (op_queue.hpp:41)
by 0x40EBEE: boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>::push(boost::asio::detail::task_io_service_operation*) (op_queue.hpp:107)
by 0x4228BB: boost::asio::detail::epoll_reactor::run(bool, boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&) (epoll_reactor.ipp:431)
by 0x423629: boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service_thread_info&, boost::system::error_code const&) (task_io_service.ipp:396)
by 0x423302: boost::asio::detail::task_io_service::run(boost::system::error_code&) (task_io_service.ipp:153)
by 0x42393A: boost::asio::io_service::run() (io_service.ipp:59)
by 0x42EB34: boost::_mfi::mf0<unsigned long, boost::asio::io_service>::operator()(boost::asio::io_service*) const (mem_fn_template.hpp:49)
by 0x42EA72: unsigned long boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> >::operator()<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list0>(boost::_bi::type<unsigned long>, boost::_mfi::mf0<unsigned long, boost::asio::io_service>&, boost::_bi::list0&, long) (bind.hpp:243)
by 0x42E91E: boost::_bi::bind_t<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> > >::operator()() (bind_template.hpp:20)
by 0x42E65D: boost::detail::thread_data<boost::_bi::bind_t<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> > > >::run() (thread.hpp:117)
by 0x5043818: ??? (in /usr/lib/libboost_thread.so.1.53.0)
by 0x4C2D6FE: mythread_wrapper (hg_intercepts.c:219)
Address 0x61A36A8 is 8 bytes inside a block of size 160 alloc'd
at 0x4C28A3A: operator new(unsigned long) (vg_replace_malloc.c:298)
by 0x42806A: boost::asio::detail::epoll_reactor::descriptor_state* boost::asio::detail::object_pool_access::create<boost::asio::detail::epoll_reactor::descriptor_state>() (object_pool.hpp:35)
by 0x4267B8: boost::asio::detail::object_pool<boost::asio::detail::epoll_reactor::descriptor_state>::alloc() (object_pool.hpp:89)
by 0x4229E3: boost::asio::detail::epoll_reactor::allocate_descriptor_state() (epoll_reactor.ipp:512)
by 0x4223D4: boost::asio::detail::epoll_reactor::register_descriptor(int, boost::asio::detail::epoll_reactor::descriptor_state*&) (epoll_reactor.ipp:151)
by 0x424405: boost::asio::detail::reactive_socket_service_base::do_assign(boost::asio::detail::reactive_socket_service_base::base_implementation_type&, int, int const&, boost::system::error_code&) (reactive_socket_service_base.ipp:182)
by 0x42DA98: boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp>::assign(boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp>::implementation_type&, boost::asio::ip::tcp const&, int const&, boost::system::error_code&) (reactive_socket_service.hpp:117)
by 0x42D75C: boost::asio::stream_socket_service<boost::asio::ip::tcp>::assign(boost::asio::detail::reactive_socket_service<boost::asio::ip::tcp>::implementation_type&, boost::asio::ip::tcp const&, int const&, boost::system::error_code&) (stream_socket_service.hpp:138)
by 0x42D263: boost::asio::basic_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >::assign(boost::asio::ip::tcp const&, int const&, boost::system::error_code&) (basic_socket.hpp:285)
by 0x42CAD7: boost::asio::detail::reactive_socket_accept_op_base<boost::asio::basic_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >, boost::asio::ip::tcp>::do_perform(boost::asio::detail::reactor_op*) (reactive_socket_accept_op.hpp:66)
by 0x409DE0: boost::asio::detail::reactor_op::perform() (reactor_op.hpp:40)
by 0x422C2F: boost::asio::detail::epoll_reactor::descriptor_state::perform_io(unsigned int) (epoll_reactor.ipp:622)
----------------------------------------------------------------
Thread #2: lock order "0x64C720 before 0x619E550" violated
Observed (incorrect) order is: acquisition of lock at 0x619E550
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408545: boost::asio::detail::posix_mutex::lock() (posix_mutex.hpp:52)
by 0x40D9E1: boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>::scoped_lock(boost::asio::detail::posix_mutex&) (scoped_lock.hpp:36)
by 0x422BD3: boost::asio::detail::epoll_reactor::descriptor_state::perform_io(unsigned int) (epoll_reactor.ipp:611)
by 0x422D38: boost::asio::detail::epoll_reactor::descriptor_state::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) (epoll_reactor.ipp:648)
by 0x409C69: boost::asio::detail::task_io_service_operation::complete(boost::asio::detail::task_io_service&, boost::system::error_code const&, unsigned long) (task_io_service_operation.hpp:37)
by 0x4236AD: boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service_thread_info&, boost::system::error_code const&) (task_io_service.ipp:412)
by 0x423302: boost::asio::detail::task_io_service::run(boost::system::error_code&) (task_io_service.ipp:153)
by 0x42393A: boost::asio::io_service::run() (io_service.ipp:59)
by 0x42EB34: boost::_mfi::mf0<unsigned long, boost::asio::io_service>::operator()(boost::asio::io_service*) const (mem_fn_template.hpp:49)
by 0x42EA72: unsigned long boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> >::operator()<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list0>(boost::_bi::type<unsigned long>, boost::_mfi::mf0<unsigned long, boost::asio::io_service>&, boost::_bi::list0&, long) (bind.hpp:243)
by 0x42E91E: boost::_bi::bind_t<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> > >::operator()() (bind_template.hpp:20)
followed by a later acquisition of lock at 0x64C720
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408845: boost::asio::detail::posix_static_mutex::lock() (posix_static_mutex.hpp:44)
by 0x40E523: boost::asio::detail::scoped_lock<boost::asio::detail::posix_static_mutex>::scoped_lock(boost::asio::detail::posix_static_mutex&) (scoped_lock.hpp:36)
by 0x424EE7: boost::asio::detail::signal_set_service::deliver_signal(int) (signal_set_service.ipp:431)
by 0x42477C: boost::asio::detail::signal_set_service::pipe_read_op::do_perform(boost::asio::detail::reactor_op*) (signal_set_service.ipp:95)
by 0x409DE0: boost::asio::detail::reactor_op::perform() (reactor_op.hpp:40)
by 0x422C2F: boost::asio::detail::epoll_reactor::descriptor_state::perform_io(unsigned int) (epoll_reactor.ipp:622)
by 0x422D38: boost::asio::detail::epoll_reactor::descriptor_state::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) (epoll_reactor.ipp:648)
by 0x409C69: boost::asio::detail::task_io_service_operation::complete(boost::asio::detail::task_io_service&, boost::system::error_code const&, unsigned long) (task_io_service_operation.hpp:37)
by 0x4236AD: boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service_thread_info&, boost::system::error_code const&) (task_io_service.ipp:412)
by 0x423302: boost::asio::detail::task_io_service::run(boost::system::error_code&) (task_io_service.ipp:153)
by 0x42393A: boost::asio::io_service::run() (io_service.ipp:59)
Required order was established by acquisition of lock at 0x64C720
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408845: boost::asio::detail::posix_static_mutex::lock() (posix_static_mutex.hpp:44)
by 0x40E523: boost::asio::detail::scoped_lock<boost::asio::detail::posix_static_mutex>::scoped_lock(boost::asio::detail::posix_static_mutex&) (scoped_lock.hpp:36)
by 0x425060: boost::asio::detail::signal_set_service::add_service(boost::asio::detail::signal_set_service*) (signal_set_service.ipp:467)
by 0x4248BB: boost::asio::detail::signal_set_service::signal_set_service(boost::asio::io_service&) (signal_set_service.ipp:128)
by 0x42558B: boost::asio::signal_set_service::signal_set_service(boost::asio::io_service&) (signal_set_service.hpp:53)
by 0x42B628: boost::asio::io_service::service* boost::asio::detail::service_registry::create<boost::asio::signal_set_service>(boost::asio::io_service&) (service_registry.hpp:81)
by 0x408742: boost::asio::detail::service_registry::do_use_service(boost::asio::io_service::service::key const&, boost::asio::io_service::service* (*)(boost::asio::io_service&)) (service_registry.ipp:123)
by 0x42A92F: boost::asio::signal_set_service& boost::asio::detail::service_registry::use_service<boost::asio::signal_set_service>() (service_registry.hpp:48)
by 0x42984A: boost::asio::signal_set_service& boost::asio::use_service<boost::asio::signal_set_service>(boost::asio::io_service&) (io_service.hpp:33)
by 0x428633: boost::asio::basic_io_object<boost::asio::signal_set_service, false>::basic_io_object(boost::asio::io_service&) (basic_io_object.hpp:90)
by 0x42753A: boost::asio::basic_signal_set<boost::asio::signal_set_service>::basic_signal_set(boost::asio::io_service&) (basic_signal_set.hpp:106)
followed by a later acquisition of lock at 0x619E550
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408545: boost::asio::detail::posix_mutex::lock() (posix_mutex.hpp:52)
by 0x40D9E1: boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>::scoped_lock(boost::asio::detail::posix_mutex&) (scoped_lock.hpp:36)
by 0x4224E4: boost::asio::detail::epoll_reactor::register_internal_descriptor(int, int, boost::asio::detail::epoll_reactor::descriptor_state*&, boost::asio::detail::reactor_op*) (epoll_reactor.ipp:179)
by 0x4250FC: boost::asio::detail::signal_set_service::add_service(boost::asio::detail::signal_set_service*) (signal_set_service.ipp:485)
by 0x4248BB: boost::asio::detail::signal_set_service::signal_set_service(boost::asio::io_service&) (signal_set_service.ipp:128)
by 0x42558B: boost::asio::signal_set_service::signal_set_service(boost::asio::io_service&) (signal_set_service.hpp:53)
by 0x42B628: boost::asio::io_service::service* boost::asio::detail::service_registry::create<boost::asio::signal_set_service>(boost::asio::io_service&) (service_registry.hpp:81)
by 0x408742: boost::asio::detail::service_registry::do_use_service(boost::asio::io_service::service::key const&, boost::asio::io_service::service* (*)(boost::asio::io_service&)) (service_registry.ipp:123)
by 0x42A92F: boost::asio::signal_set_service& boost::asio::detail::service_registry::use_service<boost::asio::signal_set_service>() (service_registry.hpp:48)
by 0x42984A: boost::asio::signal_set_service& boost::asio::use_service<boost::asio::signal_set_service>(boost::asio::io_service&) (io_service.hpp:33)
by 0x428633: boost::asio::basic_io_object<boost::asio::signal_set_service, false>::basic_io_object(boost::asio::io_service&) (basic_io_object.hpp:90)
----------------------------------------------------------------
Thread #1: lock order "0x619E550 before 0x64C720" violated
Observed (incorrect) order is: acquisition of lock at 0x64C720
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408845: boost::asio::detail::posix_static_mutex::lock() (posix_static_mutex.hpp:44)
by 0x40E523: boost::asio::detail::scoped_lock<boost::asio::detail::posix_static_mutex>::scoped_lock(boost::asio::detail::posix_static_mutex&) (scoped_lock.hpp:36)
by 0x425166: boost::asio::detail::signal_set_service::remove_service(boost::asio::detail::signal_set_service*) (signal_set_service.ipp:492)
by 0x4248F0: boost::asio::detail::signal_set_service::shutdown_service() (signal_set_service.ipp:138)
by 0x42564D: boost::asio::signal_set_service::shutdown_service() (signal_set_service.hpp:110)
by 0x41AA69: boost::asio::detail::service_registry::~service_registry() (service_registry.ipp:37)
by 0x41AB32: boost::asio::io_service::~io_service() (io_service.ipp:53)
by 0x41B178: http::server3::server::~server() (in /root/server3/server3)
by 0x41A66A: main (main.cpp:37)
followed by a later acquisition of lock at 0x619E550
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408545: boost::asio::detail::posix_mutex::lock() (posix_mutex.hpp:52)
by 0x40D9E1: boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>::scoped_lock(boost::asio::detail::posix_mutex&) (scoped_lock.hpp:36)
by 0x40AC3A: boost::asio::detail::epoll_reactor::deregister_descriptor(int, boost::asio::detail::epoll_reactor::descriptor_state*&, bool) (epoll_reactor.ipp:307)
by 0x4251BC: boost::asio::detail::signal_set_service::remove_service(boost::asio::detail::signal_set_service*) (signal_set_service.ipp:499)
by 0x4248F0: boost::asio::detail::signal_set_service::shutdown_service() (signal_set_service.ipp:138)
by 0x42564D: boost::asio::signal_set_service::shutdown_service() (signal_set_service.hpp:110)
by 0x41AA69: boost::asio::detail::service_registry::~service_registry() (service_registry.ipp:37)
by 0x41AB32: boost::asio::io_service::~io_service() (io_service.ipp:53)
by 0x41B178: http::server3::server::~server() (in /root/server3/server3)
by 0x41A66A: main (main.cpp:37)
Required order was established by acquisition of lock at 0x619E550
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408545: boost::asio::detail::posix_mutex::lock() (posix_mutex.hpp:52)
by 0x40D9E1: boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>::scoped_lock(boost::asio::detail::posix_mutex&) (scoped_lock.hpp:36)
by 0x422BD3: boost::asio::detail::epoll_reactor::descriptor_state::perform_io(unsigned int) (epoll_reactor.ipp:611)
by 0x422D38: boost::asio::detail::epoll_reactor::descriptor_state::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) (epoll_reactor.ipp:648)
by 0x409C69: boost::asio::detail::task_io_service_operation::complete(boost::asio::detail::task_io_service&, boost::system::error_code const&, unsigned long) (task_io_service_operation.hpp:37)
by 0x4236AD: boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service_thread_info&, boost::system::error_code const&) (task_io_service.ipp:412)
by 0x423302: boost::asio::detail::task_io_service::run(boost::system::error_code&) (task_io_service.ipp:153)
by 0x42393A: boost::asio::io_service::run() (io_service.ipp:59)
by 0x42EB34: boost::_mfi::mf0<unsigned long, boost::asio::io_service>::operator()(boost::asio::io_service*) const (mem_fn_template.hpp:49)
by 0x42EA72: unsigned long boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> >::operator()<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list0>(boost::_bi::type<unsigned long>, boost::_mfi::mf0<unsigned long, boost::asio::io_service>&, boost::_bi::list0&, long) (bind.hpp:243)
by 0x42E91E: boost::_bi::bind_t<unsigned long, boost::_mfi::mf0<unsigned long, boost::asio::io_service>, boost::_bi::list1<boost::_bi::value<boost::asio::io_service*> > >::operator()() (bind_template.hpp:20)
followed by a later acquisition of lock at 0x64C720
at 0x4C2C692: pthread_mutex_lock (hg_intercepts.c:495)
by 0x408845: boost::asio::detail::posix_static_mutex::lock() (posix_static_mutex.hpp:44)
by 0x40E523: boost::asio::detail::scoped_lock<boost::asio::detail::posix_static_mutex>::scoped_lock(boost::asio::detail::posix_static_mutex&) (scoped_lock.hpp:36)
by 0x424EE7: boost::asio::detail::signal_set_service::deliver_signal(int) (signal_set_service.ipp:431)
by 0x42477C: boost::asio::detail::signal_set_service::pipe_read_op::do_perform(boost::asio::detail::reactor_op*) (signal_set_service.ipp:95)
by 0x409DE0: boost::asio::detail::reactor_op::perform() (reactor_op.hpp:40)
by 0x422C2F: boost::asio::detail::epoll_reactor::descriptor_state::perform_io(unsigned int) (epoll_reactor.ipp:622)
by 0x422D38: boost::asio::detail::epoll_reactor::descriptor_state::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) (epoll_reactor.ipp:648)
by 0x409C69: boost::asio::detail::task_io_service_operation::complete(boost::asio::detail::task_io_service&, boost::system::error_code const&, unsigned long) (task_io_service_operation.hpp:37)
by 0x4236AD: boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&, boost::asio::detail::task_io_service_thread_info&, boost::system::error_code const&) (task_io_service.ipp:412)
by 0x423302: boost::asio::detail::task_io_service::run(boost::system::error_code&) (task_io_service.ipp:153)
by 0x42393A: boost::asio::io_service::run() (io_service.ipp:59)