Struct VmoBuffer

pub struct VmoBuffer {
    pub vmo: Option<Vmo>,
    pub vmo_usable_start: u64,
}

Fields

vmo: Option<Vmo>

The same VMO can be used by more than one CodecBuffer (only of the same buffer_lifetime_ordinal), but each vmo handle must be a separate handle.

The vmo field can be 0 if this is a VmoBuffer in BufferCollectionInfo_2 that’s at or beyond BufferCollectionInfo_2.buffer_count.

vmo_usable_start: u64

Offset within the VMO of the first usable byte. Must be < the VMO’s size in bytes, and leave sufficient room for BufferMemorySettings.size_bytes before the end of the VMO.

Trait Implementations

impl Debug for VmoBuffer

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

Formats the value using the given formatter.

impl Decode<VmoBuffer, DefaultFuchsiaResourceDialect> for VmoBuffer

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<'_, DefaultFuchsiaResourceDialect>, offset: usize, _depth: Depth, ) -> Result<()>

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

impl Encode<VmoBuffer, DefaultFuchsiaResourceDialect> for &mut VmoBuffer

unsafe fn encode( self, encoder: &mut Encoder<'_, DefaultFuchsiaResourceDialect>, 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<T0: Encode<Optional<HandleType<Vmo, { _ }, 2147483648>>, DefaultFuchsiaResourceDialect>, T1: Encode<u64, DefaultFuchsiaResourceDialect>> Encode<VmoBuffer, DefaultFuchsiaResourceDialect> for (T0, T1)

unsafe fn encode( self, encoder: &mut Encoder<'_, DefaultFuchsiaResourceDialect>, 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 Hash for VmoBuffer

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for VmoBuffer

fn cmp(&self, other: &VmoBuffer) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for VmoBuffer

fn eq(&self, other: &VmoBuffer) -> 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 PartialOrd for VmoBuffer

fn partial_cmp(&self, other: &VmoBuffer) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl ResourceTypeMarker for VmoBuffer

type Borrowed<'a> = &'a mut VmoBuffer

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

fn take_or_borrow<'a>( value: &'a mut <Self as TypeMarker>::Owned, ) -> Self::Borrowed<'a>

Cheaply converts from &mut Self::Owned to Self::Borrowed. For HandleBased types this is “take” (it returns an owned handle and replaces value with Handle::invalid), and for all other types it is “borrow” (just converts from one reference to another).

impl TypeMarker for VmoBuffer

type Owned = VmoBuffer

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 Eq for VmoBuffer

impl Standalone<DefaultFuchsiaResourceDialect> for VmoBuffer

impl StructuralPartialEq for VmoBuffer