Help in figuring out score objects in RTEMS and ticket #3131

[Utkarsh Rai]

Hello,
For my GSoC project, user-configurable thread stack protection, I need to
track, allocate, and manipulate attributes of shared as well as protected
stacks. Dr.Gedare suggested that tracking them with score objects would be
a good idea. He also indicated a good place to start and understand
score objects would be through this ticket.
<https://devel.rtems.org/ticket/3131>

>From the information that I could find in docs, my understanding of score
objects is that they are a type of directive that
helps introduce modularity to RTEMS as various types of RTEMS objects like
message queues, semaphores, etc. can use the same set of directives for
allocation/deallocation and control of their object types.

Some of the examples of the implementation that I could find used
_Object_Iniitialize_information()
to initialize the object type, then _Object_Allocate()/Free()
allocate/de-allocate the object. Object_Id is used to control the object
type. My confusion is, how do we use object IDs to refer to and control the
allocated objects?

I also have some confusion in the above-mentioned ticket, it says-
'The mmap_h handler should construct a mapping object. A destructor is
currently missing. Maybe the mmap_h handler should use a flag to deal with
construction and destruction.'
 I am unclear as to how the mmap_h handler should precisely look like and
where should it be defined?
I would be grateful if you can provide some help in figuring this out.

Regards,
Utkarsh
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