This symbol is defined as a static member object inside of a
boost detail header. When boost headers are used in a project
that uses Boost in both the main binary as well as dlopen()'d
shlibs, the top_ symbol gets duplicated and the metadata gets
partitioned.
We use the Boost shlib to unify both the main binary and the
shlibs to use the same memory address for top_.
This involves marking the templated object call_stack::top_ as
"extern" and then declaring to Boost that we intend to use the
shlibs.
The pcloudData socket is now opened by UdpCommandDemuxer, when
libLivoxProto1 is initialized. We can now just pick up the socket
and be certain it'll be there if the lib is being executed.
I think it's best to remove the timer tick from UdpCommandDemuxer.
I looked at it again and it doesn't actually help with responsiveness.
Whatever it contributes is no different from what stop() does.
They both just call timer.cancel and cmdsocket.cancel.
So if that doesn't stop the socket in stop(), it won't magically
stop it more effectively if I call it from a timer handler.
hayodea