sem_destroy - destroy an unnamed semaphore
int sem_destroy(sem_t *sem);
Link with -pthread
() destroys the unnamed semaphore at the address pointed to by
Only a semaphore that has been initialized by sem_init
(3) should be
destroyed using sem_destroy
Destroying a semaphore that other processes or threads are currently blocked on
(3)) produces undefined behavior.
Using a semaphore that has been destroyed produces undefined results, until the
semaphore has been reinitialized using sem_init
() returns 0 on success; on error, -1 is returned, and
is set to indicate the error.
- sem is not a valid semaphore.
For an explanation of the terms used in this section, see attributes
An unnamed semaphore should be destroyed with sem_destroy
() before the
memory in which it is located is deallocated. Failure to do this can result in
resource leaks on some implementations.