Struct FormatCosts

pub struct FormatCosts {
    pub format_costs: Option<Vec<FormatCostEntry>>,
    /* private fields */
}

This is the root of the persistent fidl in a format costs file. The format costs files are read by the assembly tool and merged into the single sysmem_config.persistent_fidl file in the sysmem domain config (see Config above).

Normally json[5] would be preferable for config, but we generate this config in rust using FIDL types (to avoid repetition and to take advantage of FIDL rust codegen), and there’s no json schema for FIDL types.

While the resulting sysmem_config.persistent_fidl is a single file that can contain multiple aspects of sysmem config, in contrast a format costs file contains only format costs. We don’t mind having more separate files during the build, but it’s nice to get sysmem’s domain config down to a single file on-device.

Fields

format_costs: Option<Vec<FormatCostEntry>>

This is a chunk of entries that’ll end up in [‘fuchsia.sysmem2.Config.format_costs’] (see above) unless overriden by later entries (either in this same vector or in later-processed files during aggregation by the assembly tool).

Trait Implementations

impl Clone for FormatCosts

fn clone(&self) -> FormatCosts

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FormatCosts

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

Formats the value using the given formatter.

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

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 Default for FormatCosts

fn default() -> FormatCosts

Returns the “default value” for a type.

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

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 FormatCosts

fn eq(&self, other: &FormatCosts) -> 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 FormatCosts

type Owned = FormatCosts

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 FormatCosts

type Borrowed<'a> = &'a FormatCosts

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 FormatCosts

impl StructuralPartialEq for FormatCosts