osx man page for shm_unlink

SHM_UNLINK(2)						      BSD System Calls Manual						     SHM_UNLINK(2)

NAME
     shm_unlink -- remove shared memory object

SYNOPSIS
     #include <sys/mman.h>

     int
     shm_unlink(const char *name);

DESCRIPTION
     The shm_unlink() function disassociates the shared memory object specified by name from that name.  The resources associated with the shared
     memory object remain intact until the last file descriptor reference is removed, e.g., by close(2) or munmap(2), at which point the resources
     are reclaimed (if no references exist at the time of the call to shm_unlink(), the resources are reclaimed immediately).  The name can only
     be reused when it is bound to a new shared memory object with a call to shm_open(2) with the O_CREAT flag.

RETURN VALUES
     Upon successful completion, a value of 0 is returned.  Otherwise, a value of -1 is returned and errno is set to indicate the error, and the
     named shared memory object will remain unchanged.

ERRORS
     The shm_unlink() succeeds unless:

     [EACCES]		Permission is denied to be remove the object.

     [ENAMETOOLONG]	name exceeded the name size limit.  This is currently PSHMNAMLEN characters (defined in <sys/posix_shm.h>), but this may
			change in the future.

     [ENOENT]		The named object does not exist.

SEE ALSO
     close(2), mmap(2), munmap(2), shm_open(2), shmat(2), shmctl(2)

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

Darwin								  August 31, 2006							    Darwin