SEM_DESTROY(3) Library Functions Manual SEM_DESTROY(3)
sem_destroy -- destroy an unnamed semaphore
POSIX Real-time Library (librt, -lrt)
The sem_destroy() function destroys the unnamed semaphore pointed to by
sem. After a successful call to sem_destroy(), sem is unusable until re-
initialized by another call to sem_init().
The sem_destroy() function returns the value 0 if successful; otherwise
the value -1 is returned and the global variable errno is set to indicate
sem_destroy() will fail if:
[EBUSY] There are currently threads blocked on the semaphore
that sem points to.
[EINVAL] sem points to an invalid semaphore.
sem_destroy() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').
POSIX does not define the behavior of sem_destroy() if called while there
are threads blocked on sem, but this implementation is guaranteed to
return -1 and set errno to EBUSY if there are threads blocked on sem.
NetBSD 6.1.5 January 22, 2003 NetBSD 6.1.5