| SEM_DESTROY(3) | Library Functions Manual | SEM_DESTROY(3) | 
sem_destroy —
#include <semaphore.h>
int
  
  sem_destroy(sem_t
    *sem);
sem_destroy() function destroys the unnamed
  semaphore pointed to by sem. After a successful call to
  sem_destroy(), sem is unusable
  until re-initialized by another call to sem_init().
sem_destroy() function returns the value 0 if
  successful; otherwise the value -1 is returned and the global variable
  errno is set to indicate the error.
sem_destroy() will fail if:
sem_destroy() conforms to ISO/IEC
  9945-1:1996 (“POSIX.1”).
POSIX does not define the behavior of
    sem_destroy() if called while there are threads
    blocked on sem, but this implementation is guaranteed
    to return -1 and set errno to
    EBUSY if there are threads blocked on
    sem.
| January 22, 2003 | NetBSD 9.4 |