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sem_unlink

SEM_UNLINK(2)						      BSD System Calls Manual						     SEM_UNLINK(2)

NAME

     sem_unlink -- remove a named semaphore

SYNOPSIS

     #include <semaphore.h>

     int
     sem_unlink(const char *name);

DESCRIPTION

     The named semaphore named name is removed.  If the semaphore is in use by other processes, then name is immediately disassociated with the
     semaphore, 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_unlink() will return 0.  Otherwise, -1 is returned and errno is set, and the state of the semaphore is unchanged.

ERRORS

     sem_unlink() succeeds unless:

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

     [ENAMETOOLONG]	name exceeded PSEMNAMLEN characters.

     [ENOENT]		The named semaphore does not exist.

SEE ALSO

     sem_close(2), sem_open(2), semctl(2), semget(2), semop(2)

HISTORY

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

Darwin								   June 8, 2000 							    Darwin

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