Struct SingleBufferEventProducer

pub struct SingleBufferEventProducer { /* private fields */ }

An event producer for an event that has one buffer of data.

Implementations

impl SingleBufferEventProducer

pub fn existing(buffer: Vec<u8>) -> Self

Constructs a new SingleBufferEventProducer that will produce an event for one name of type WatchEvent::Existing.

Trait Implementations

impl EventProducer for SingleBufferEventProducer

fn mask(&self) -> WatchMask

Returns a mask that represents the type of events this producer can generate, as one of the fidl_fuchsia_io::WatchMask::* constants. There might be only one bit set and it should correspond to the event returned by the Self::event() method. It is a duplication, but it helps the callers that need both masks and event IDs.

fn event(&self) -> WatchEvent

Returns an event ID this event producer will use to populate the buffers, as one of the fidl_fuchsia_io::WatchEvent::* constants. Must match what Self::mask(), returns, see there for details.

fn prepare_for_next_buffer(&mut self) -> bool

Checks if this producer can create another buffer, returning true if it can. This method does not actually need to construct the buffer just yet, as an optimization if it will not be needed.

fn buffer(&mut self) -> Vec<u8>

Returns a copy of the current buffer prepared by this producer. This method will be the one constructing a buffer, if necessary, after a preceding call to Self::prepare_for_next_buffer().