Struct ndk::looper::ForeignLooper

pub struct ForeignLooper { /* private fields */ }

A native ALooper *, not necessarily allocated with the current thread.

Implementations

impl ForeignLooper

pub fn for_thread() -> Option<Self>

Returns the looper associated with the current thread, if any.

pub unsafe fn from_ptr(ptr: NonNull<ALooper>) -> Self

Construct a ForeignLooper object from the given pointer.

Safety

By calling this function, you guarantee that the pointer is a valid, non-null pointer to an NDK ffi::ALooper.

pub fn ptr(&self) -> NonNull<ALooper>

Returns a pointer to the NDK ALooper object.

pub fn wake(&self)

Wakes the looper. An event of Poll::Wake will be sent.

pub fn add_fd(
    &self,
    fd: RawFd,
    ident: i32,
    events: FdEvent,
    data: *mut c_void
) -> Result<(), LooperError>

Adds a file descriptor to be polled, without a callback.

See also the NDK docs.

pub fn add_fd_with_callback<F: FnMut(RawFd) -> bool>(
    &self,
    fd: RawFd,
    events: FdEvent,
    callback: F
) -> Result<(), LooperError>

Adds a file descriptor to be polled, with a callback.

The callback takes as an argument the file descriptor, and should return true to continue receiving callbacks, or false to have the callback unregistered.

See also the NDK docs.

Trait Implementations

impl Clone for ForeignLooper

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ForeignLooper

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

Formats the value using the given formatter.

impl Drop for ForeignLooper

fn drop(&mut self)

Executes the destructor for this type.

impl Send for ForeignLooper

impl Sync for ForeignLooper