Constant nc::types::NOTIFY_NONE

pub const NOTIFY_NONE: i32 = 0;

SIGEV_THREAD implementation: SIGEV_THREAD must be implemented in user space. If SIGEV_THREAD is passed to mq_notify, then

• sigev_signo must be the file descriptor of an AF_NETLINK socket. It's not necessary that the socket is bound.
• sigev_value.sival_ptr must point to a cookie that is NOTIFY_COOKIE_LEN bytes long. If the notification is triggered, then the cookie is sent to the netlink socket. The last byte of the cookie is replaced with the NOTIFY_?? codes: NOTIFY_WOKENUP if the notification got triggered, NOTIFY_REMOVED if it was removed, either due to a close() on the message queue fd or due to a mq_notify() that removed the notification.