Struct EventFd

pub struct EventFd(/* private fields */);

Implementations

impl EventFd

pub fn new() -> Result<Self>

EventFd::from_value_and_flags with init_val = 0 and flags = EfdFlags::empty().

pub fn from_value_and_flags(init_val: u32, flags: EfdFlags) -> Result<Self>

Constructs EventFd with the given init_val and flags.

Wrapper around libc::eventfd.

pub fn from_flags(flags: EfdFlags) -> Result<Self>

EventFd::from_value_and_flags with init_val = 0 and given flags.

pub fn from_value(init_val: u32) -> Result<Self>

EventFd::from_value_and_flags with given init_val and flags = EfdFlags::empty().

pub fn arm(&self) -> Result<usize>

Arms self, a following call to poll, select or epoll will return immediately.

EventFd::write with 1.

pub fn defuse(&self) -> Result<usize>

Defuses self, a following call to poll, select or epoll will block.

EventFd::write with 0.

pub fn write(&self, value: u64) -> Result<usize>

Enqueues value triggers.

The next value calls to poll, select or epoll will return immediately.

EventFd::write with value.

pub fn read(&self) -> Result<u64>

Trait Implementations

impl AsFd for EventFd

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl AsRawFd for EventFd

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for EventFd

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<EventFd> for OwnedFd

fn from(x: EventFd) -> OwnedFd

Converts to this type from the input type.