Enum calloop::sys::Mode

pub enum Mode {
    OneShot,
    Level,
    Edge,
}

Possible modes for registering a file descriptor

Variants

OneShot

Single event generation

This FD will be disabled as soon as it has generated one event.

The user will need to use LoopHandle::update() to re-enable it if desired.

Level

Level-triggering

This FD will report events on every poll as long as the requested interests are available.

Edge

Edge-triggering

This FD will report events only when it gains one of the requested interests. it must thus be fully processed before it’ll generate events again.

This mode is not supported on certain platforms, and an error will be returned if it is used.

Supported Platforms

As of the time of writing, the platforms that support edge triggered polling are as follows:

• Linux/Android
• macOS/iOS/tvOS/watchOS
• FreeBSD/OpenBSD/NetBSD/DragonflyBSD

Trait Implementations

impl Clone for Mode

fn clone(&self) -> Mode

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Mode

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

Formats the value using the given formatter.

impl Copy for Mode