backtrace for alternate thread

gistfile1.txt

[ign-13] View::AddComponent entity: 353
[ign-13] thread: 139693207320320
[ign-13]  0# ignition::gazebo::v4::detail::View::AddComponent(unsigned long, unsigned long, int) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4.so.4
[ign-13]  1# ignition::gazebo::v4::EntityComponentManager::RebuildViews() in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4.so.4
[ign-13]  2# ignition::gazebo::v4::EntityComponentManager::CreateComponentImplementation(unsigned long, unsigned long, ignition::gazebo::v4::components::BaseComponent const*) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4.so.4
[ign-13]  3# ignition::gazebo::v4::EntityComponentManager::SetState(ignition::msgs::SerializedStateMap const&) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4.so.4
[ign-13]  4# ignition::gazebo::v4::GuiRunner::OnState(ignition::msgs::SerializedStepMap const&) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4-gui.so.4
[ign-13]  5# ignition::gazebo::v4::GuiRunner::OnStateAsyncService(ignition::msgs::SerializedStepMap const&) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4-gui.so.4
[ign-13]  6# std::_Function_handler<bool (ignition::msgs::SerializedStepMap const&, ignition::msgs::Empty&), ignition::transport::v9::Node::Advertise<ignition::gazebo::v4::GuiRunner, ignition::msgs::SerializedStepMap>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (ignition::gazebo::v4::GuiRunner::*)(ignition::msgs::SerializedStepMap const&), ignition::gazebo::v4::GuiRunner*, ignition::transport::v9::AdvertiseServiceOptions const&)::{lambda(ignition::msgs::SerializedStepMap const&, ignition::msgs::Empty&)#1}>::_M_invoke(std::_Any_data const&, ignition::msgs::SerializedStepMap const&, ignition::msgs::Empty&) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4-gui.so.4
[ign-13]  7# ignition::transport::v9::RepHandler<ignition::msgs::SerializedStepMap, ignition::msgs::Empty>::RunCallback(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&) in /home/ddeng/ignition_ws/install/lib/libignition-gazebo4-gui.so.4
[ign-13]  8# ignition::transport::v9::NodeShared::RecvSrvRequest() in /home/ddeng/ignition_ws/install/lib/libignition-transport9.so.9
[ign-13]  9# ignition::transport::v9::NodeShared::RunReceptionTask() in /home/ddeng/ignition_ws/install/lib/libignition-transport9.so.9
[ign-13] 10# 0x00007FE74B15AD84 in /lib/x86_64-linux-gnu/libstdc++.so.6
[ign-13] 11# 0x00007FE74FBD6609 in /lib/x86_64-linux-gnu/libpthread.so.0
[ign-13] 12# clone in /lib/x86_64-linux-gnu/libc.so.6
[ign-13] 
[ign-13] View::AddEntity entity added: 9