Use cases for rtems_libio_share_private_env

[Christian Mauderer]

Hello,

I'm still trying to eliminate task-variables for better compatibility
with SMP. At the moment I'm working on the privateenv module. In this
module there is a function called rtems_libio_share_private_env that
makes it possible to share the user environment from another thread.

It seems that the function is not used in RTEMS itself. There are only
some tests for this function. Therefore it would be interesting if there
are some real use cases for it. Why has it been implemented in the first
place?

If there are no use cases: Would it be possible to remove the function
of shared user environments completely? It would simplify the whole
module a lot.

Kind regards

Christian Mauderer
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