Struct CheckpointData 

pub struct CheckpointData {
    pub checkpoint_id: u64,
    pub begin_checkpoint_lsn: Lsn,
    pub end_checkpoint_lsn: Lsn,
    pub active_transactions: Vec<ActiveTransactionEntry>,
    pub dirty_pages: Vec<DirtyPageEntry>,
    pub timestamp: u64,
    pub oldest_required_lsn: Lsn,
}

Checkpoint data written to WAL

Fields

checkpoint_id: u64

Checkpoint ID (monotonically increasing)

begin_checkpoint_lsn: Lsn

LSN at start of checkpoint

end_checkpoint_lsn: Lsn

LSN at end of checkpoint

active_transactions: Vec<ActiveTransactionEntry>

Active transactions at checkpoint time

dirty_pages: Vec<DirtyPageEntry>

Dirty pages at checkpoint time

timestamp: u64

Timestamp when checkpoint was taken

oldest_required_lsn: Lsn

Oldest LSN needed for recovery (min of active txn first_lsn and dirty page recovery_lsn)

Implementations

impl CheckpointData

pub fn new( checkpoint_id: u64, begin_lsn: Lsn, active_txns: Vec<ActiveTransactionEntry>, dirty_pages: Vec<DirtyPageEntry>, ) -> Self

Create a new checkpoint

Trait Implementations

impl Clone for CheckpointData

fn clone(&self) -> CheckpointData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CheckpointData

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CheckpointData

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CheckpointData

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.