QOSCCM_ — set_slot_id

This needs clarification. Does each COPI get its own slot_id assigned by the container? Does the COPI control what (if anything) goes in this slot?

The usage of the slot id needs more detailed specification to be used in an
interoperable way. The following text will be given in response to this issue:
COPIs are not able to allocate a slot id since this is done in the ORBInitializer
which is executed at component server creation, which is before any user code
(i.e. COPI) is executed. Therefore, a slot id is allocated by the component server
and is communicated to the COPI by using the set_slot_id method. By using this
slot_id Container Portable Interceptors can have access to a PICurrent slot to
exchange thread and call specific information. All COPIs get the same slot id
since the number of registered COPIs is not known beforehand. A definition of
the content of the slot where COPIS can read and add information is also added