Struct android_looper::LooperRef

pub struct LooperRef { /* fields omitted */ }

Reference to a looper.

From NDK docs:

A looper is the state tracking an event loop for a thread. Loopers do not define event structures or other such things; rather they are a lower-level facility to attach one or more discrete objects listening for an event. An "event" here is simply data available on a file descriptor: each attached object has an associated file descriptor, and waiting for "events" means (internally) polling on all of these file descriptors until one or more of them have data available.

A thread can have only one Looper associated with it.

Methods

impl LooperRef

pub fn from_handle(handle: LooperHandle) -> LooperRef

Create LooperRef from native handle.

pub fn prepare(opts: LooperPrepareOpts) -> Result<LooperRef>

Prepares a looper associated with the calling thread, and returns it. If the thread already has a looper, it is returned. Otherwise, a new one is created, associated with the thread, and returned.

pub fn acquire(&self) -> AcquiredLooper

Acquire looper to prevent its deletion until AcquiredLooper object is dropped.

pub fn handle(&self) -> LooperHandle

Get native looper handle.

pub fn poll_all_blind(&self)

Performs all pending callbacks until all data has been consumed.

Calls ALooper_pollAll(0, NULL, NULL, NULL). This method is unstable and may be removed in favor of better version.

Trait Implementations

impl Copy for LooperRef

impl Clone for LooperRef

fn clone(&self) -> LooperRef

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LooperRef

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

Formats the value using the given formatter.