RTEMS C User's Guide
When a barrier is created, RTEMS generates a unique
barrier ID and assigns it to the created barrier until it is
deleted. The barrier ID may be obtained by either of two
methods. First, as the result of an invocation of the
rtems_barrier_create directive, the
barrier ID is stored in a user provided location. Second,
the barrier ID may be obtained later using the
rtems_barrier_ident directive. The barrier ID is
used by other barrier manager directives to access this
barrier.
RTEMS C User's Guide
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