[socket-nif] Message interface between socket.erl and nif updated

Previously the "message interface" between the functions in
socket.erl and the nif-code (socket_nif.c) was "ad hoc".
This has now been changed so that we have a unified message

      {'$socket', SockRef | undefined, Tag, Info}

This also has the added advantage of preparing the code for
when we start using the new select-fucntions (with which
its possible to specify your own message). This will be used
in order to get around our eterm "leak" (we will use a simple
counter, maintained in the nif, instead of the [Recv|Send|Acc]Ref
we generate in the erlang code today.

OTP-14831

0 files changed, 0 insertions, 0 deletions