NAME

sem_destroy − destroy an unnamed semaphore

SYNOPSIS

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

#include <semaphore.h>

int sem_destroy(sem_t ∗sem);

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

MT-LEVEL

MT-Safe

DESCRIPTION

sem_destroy() 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 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. 

SEE ALSO

sem_init(3R), sem_open(3R)

BUGS

In Solaris 2.5, these functions always return −1 and set errno to ENOSYS, because this release does not support the Semaphores option.  It is our intention to provide support for these interfaces in future releases. 

SunOS 5.5.1  —  Last change: 12 Aug 1993