Struct FuturePresentationTimes

pub struct FuturePresentationTimes {
    pub future_presentations: Vec<PresentationInfo>,
    pub remaining_presents_in_flight_allowed: i64,
}

The data type returned in fuchsia.ui.scenic::RequestPresentationTimes. See that method description for more information.

Fields

future_presentations: Vec<PresentationInfo>

The future estimated presentation times. They represent the times Scenic intends to let the client’s work be presented over the next few frames. These values may change after they are queried.

Clients who wish to minimize latency should use these values to schedule their work accordingly.

remaining_presents_in_flight_allowed: i64

The amount of Present() calls the client is currently allowed. If the client calls Present() when this number is zero, the session will be shut down.

This value is decremented every Present() call, and is incremented every OnFramePresented() event.

Trait Implementations

impl Clone for FuturePresentationTimes

fn clone(&self) -> FuturePresentationTimes

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FuturePresentationTimes

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

Formats the value using the given formatter.

impl<D: ResourceDialect> Decode<FuturePresentationTimes, D> for FuturePresentationTimes

fn new_empty() -> Self

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<()>

Decodes an object of type T from the decoder’s buffers into self.

impl<D: ResourceDialect> Encode<FuturePresentationTimes, D> for &FuturePresentationTimes

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl<D: ResourceDialect, T0: Encode<Vector<PresentationInfo, 8>, D>, T1: Encode<i64, D>> Encode<FuturePresentationTimes, D> for (T0, T1)

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, depth: Depth, ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for FuturePresentationTimes

fn eq(&self, other: &FuturePresentationTimes) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TypeMarker for FuturePresentationTimes

type Owned = FuturePresentationTimes

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for FuturePresentationTimes

type Borrowed<'a> = &'a FuturePresentationTimes

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow(value: &<Self as TypeMarker>::Owned) -> Self::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Persistable for FuturePresentationTimes

impl StructuralPartialEq for FuturePresentationTimes