Realtime Library                                  sem_destroy(3R)



NAME
     sem_destroy - destroy an unnamed semaphore

SYNOPSIS
     cc [ flag ... ] file ...  -lposix4 [ library ... ]

     #include <semaphore.h>

     int sem_destroy(sem_t *sem);

DESCRIPTION
     The sem_destroy() function is used to  destroy  the  unnamed
     semaphore, sem, which was initialized by sem_init(3R).

RETURN VALUES
     If successful, sem_destroy() returns 0, otherwise it returns
     -1 and sets errno to indicate the error condition.

ERRORS
     EINVAL      The sem argument is not a valid semaphore.

     ENOSYS      The sem_destroy() function is not supported.

     EBUSY       Other  processes  (or  LWPs  or   threads)   are
                 currently blocked on the semaphore.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     __________________________________
    | ATTRIBUTE TYPE|  ATTRIBUTE VALUE|
    |_______________|__________________|_
    | MT-Level      |  MT-Safe        |
    |_______________|_________________|

SEE ALSO
     sem_init(3R), sem_open(3R), attributes(5)