Enum BlobLayout 

#[repr(u16)]
pub enum BlobLayout {
    V0 = 0,
    V1 = 1,
}

Runtime-owned layout of a Blob.

This determines the container format, including its header and data offset, not the application-owned contents version passed to Storage::open_versioned.

Restricting the layouts a runtime accepts can be used to orchestrate rollback-safe upgrades.

Variants

V0 = 0

👎Deprecated:

unaligned pages can degrade performance

An 8-byte header, with data beginning immediately after it.

A V0 header has no checksum, so an interrupted creation is not reliably recognized: an image whose magic and layout version are durable parses as a complete header and reopens as blob version 0 or fails as a version mismatch until the blob is removed.

V1 = 1

A header padded to one 4096-byte page, so data begins on an aligned boundary.

Implementations

impl BlobLayout

pub const ALL: RangeInclusive<Self>

All blob layouts supported by this runtime.

Trait Implementations

impl Clone for BlobLayout

fn clone(&self) -> BlobLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BlobLayout

impl Debug for BlobLayout

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

Formats the value using the given formatter.

impl Eq for BlobLayout

impl Ord for BlobLayout

fn cmp(&self, other: &BlobLayout) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for BlobLayout

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for BlobLayout

fn partial_cmp(&self, other: &BlobLayout) -> 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 StructuralPartialEq for BlobLayout