NAME

sem_destroy - destroy an unnamed semaphore

LIBRARY

POSIX Real-time Library (librt, -lrt)

SYNOPSIS



int sem_destroy(sem_t *sem)

DESCRIPTION

The 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().

RETURN VALUES

ERRORS

sem_destroy() will fail if:

[EBUSY]
There are currently threads blocked on the semaphore that sem points to.

[EINVAL]
sem points to an invalid semaphore.

SEE ALSO

sem_init(3)

STANDARDS

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.