// Remove deletes the semaphore set.
// This will also awake anyone blocked on the set with EIDRM.
func (ss *SemaphoreSet) Remove() error {
rc, err := C.semctl_noarg(C.int(ss.id), 0, C.IPC_RMID)
if rc == -1 {
return err
}
return nil
}
// Getval retrieves the value of a single semaphore in the set
func (ss *SemaphoreSet) Getval(num uint16) (int, error) {
val, err := C.semctl_noarg(C.int(ss.id), C.int(num), C.GETVAL)
if val == -1 {
return -1, err
}
return int(val), nil
}
// GetZCnt returns the # of those blocked on WaitZero on the num-th semaphore
func (ss *SemaphoreSet) GetZCnt(num uint16) (int, error) {
rc, err := C.semctl_noarg(C.int(ss.id), C.int(num), C.GETZCNT)
if rc == -1 {
return 0, err
}
return int(rc), nil
}