osx man page for sem_close

SEM_CLOSE(2)						      BSD System Calls Manual						      SEM_CLOSE(2)

NAME
     sem_close -- close a named semaphore

SYNOPSIS
     #include <semaphore.h>

     int
     sem_close(sem_t *sem);

DESCRIPTION
     The system resources associated with the named semaphore referenced by sem are deallocated and the descriptor is invalidated.

     If successful, sem_close() will return 0.	Otherwise, -1 is returned and errno is set.

ERRORS
     sem_close() succeeds unless:

     [EINVAL]		sem is not a valid semaphore descriptor.

SEE ALSO
     sem_init(2), sem_open(2), sem_unlink(2), semctl(2), semget(2), semop(2)

HISTORY
     sem_close() is specified in the POSIX Realtime Extension (1003.1b-1993/1003.1i-1995).

Darwin								   June 8, 2000 							    Darwin