The
sem_post ();
function increments (unlocks) the semaphore pointed to by
Fa sem .
If there are threads blocked on the semaphore when
sem_post ();
is called, then the highest priority thread that has been blocked the longest on
the semaphore will be allowed to return from
sem_wait (.);
The
sem_post ();
function is signal-reentrant and may be called within signal handlers.
RETURN VALUES
Rv -std sem_post
ERRORS
The
sem_post ();
function will fail if:
Bq Er EINVAL
The
Fa sem
argument
points to an invalid semaphore.
