sem_destroy(3R)

NAME

sem_destroy − destroy an unnamed semaphore

cc [ flag ... ] file ... −lposix4 [ library ... ]

#include <semaphore.h>

int sem_destroy(sem_t ∗sem);

typedef struct {
...
} sem_t; /∗opaque POSIX.4 semaphore∗/

MT-Safe

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

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

EINVAL sem is not a valid semaphore.

ENOSYS sem_destroy() is not supported by this implementation.

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