Struct Snapshot 

pub struct Snapshot {
    pub xmin: u64,
    pub xmax: u64,
    pub xip: Vec<u64>,
}

A snapshot: the first transaction that is still in progress, the first transaction that did not start, and the transactions in progress between them, in order and with no duplicates.

Fields

xmin: u64

xmax: u64

xip: Vec<u64>

Implementations

impl Snapshot

pub fn to_bytes(&self) -> Vec<u8>

The binary form, which is also the value.

pub fn from_bytes(bytes: &[u8]) -> Option<Snapshot>

The snapshot in the bytes that Snapshot::to_bytes gives, or None for bytes of another form.

pub fn is_visible(&self, xid: u64) -> bool

is_visible_fxid: true when the transaction ended before the snapshot. A transaction before xmin ended, a transaction at xmax or after it did not start, and a transaction between them ended when it is not in progress.

Trait Implementations

impl Clone for Snapshot

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 Snapshot

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

Formats the value using the given formatter.

impl Eq for Snapshot

impl PartialEq for Snapshot

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Snapshot