Struct StateHistory 

pub struct StateHistory { /* private fields */ }

Two committed state blobs. A failed restore of the newest blob selects the previous blob without destroying either copy.

Implementations

impl StateHistory

pub fn new() -> Self

pub fn save(&mut self, blob: Vec<u8>)

pub fn begin_restore(&mut self) -> Option<&[u8]>

pub fn restore_succeeded(&mut self)

pub fn crash_after_restore(&mut self) -> Option<&[u8]>

pub fn current(&self) -> Option<&[u8]>

pub fn previous(&self) -> Option<&[u8]>

Trait Implementations

impl Clone for StateHistory

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateHistory

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

Formats the value using the given formatter.

impl Default for StateHistory

fn default() -> Self

Returns the “default value” for a type.

impl Eq for StateHistory

impl PartialEq for StateHistory

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StateHistory