SEM_UNLINK(2) BSD System Calls Manual SEM_UNLINK(2)
sem_unlink -- remove a named semaphore
sem_unlink(const char *name);
The named semaphore named name is removed. If the semaphore is in use my
other processes, then name is immeditately dissasociated with the sema-
phore, but the semaphore itself will not be removed until all references
to it have been closed. Subsequent calls to sem_open() using name will
refer to or create a new semaphore named name.
If successful, sem_close() will return 0. Otherwise, -1 is returned and
errno is set, and the state of the semaphore is unchanged.
sem_unlink() succeeds unless:
[EACCES] Permission is denied to be remove the semaphore.
[ENAMETOOLONG] name exceeded SEM_NAME_LEN characters.
[ENOENT] The named semaphore does not exist.
semctl(2), semget(2), semop(2), sem_close(2), sem_open(2)
sem_unlink() is specified in the POSIX Realtime Extension
Darwin June 8, 2000 Darwin