RTEMS C User's Guide
The rtems_semaphore_release directive is used to release
the specified semaphore. A simplified version of the
rtems_semaphore_release directive can be described as
follows:
if no tasks are waiting on this semaphore then increment semaphore's count else assign semaphore to a waiting task return SUCCESSFUL
If this is the outermost release of a binary
semaphore that uses priority inheritance or priority ceiling and
the task does not currently hold any other binary semaphores,
then the task performing the rtems_semaphore_release
will have its priority restored to its normal value.
RTEMS C User's Guide
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