[RTEMS Project] #3750: Add Classic API Barrier "get number waiting" Service

[RTEMS trac]

#3750: Add Classic API Barrier "get number waiting" Service
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  Reporter:  Joel Sherrill  |      Owner:  (none)
      Type:  enhancement    |     Status:  new
  Priority:  lowest         |  Milestone:  Indefinite
 Component:  rtems          |    Version:  5
  Severity:  minor          |   Keywords:  barrier, SoC, GCI
Blocked By:                 |   Blocking:
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 Given that a barrier can be set to manually release, it would be useful to
 know how many threads are waiting at it. This is a low priority request to
 consider adding that.

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Ticket URL: <http://devel.rtems.org/ticket/3750>
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