libsql_wal::transaction

Struct WriteTransaction

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pub struct WriteTransaction<F> {
    pub wal_lock: Arc<WalLock>,
    pub savepoints: Vec<Savepoint>,
    pub next_frame_no: u64,
    pub next_offset: u32,
    pub current_checksum: u32,
    pub is_commited: bool,
    pub read_tx: ReadTransaction<F>,
    pub recompute_checksum: Option<u32>,
}

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§wal_lock: Arc<WalLock>

id of the transaction currently holding the lock

§savepoints: Vec<Savepoint>§next_frame_no: u64§next_offset: u32§current_checksum: u32§is_commited: bool§read_tx: ReadTransaction<F>§recompute_checksum: Option<u32>

if transaction overwrote frames, then the running checksum needs to be recomputed. We store here the lowest segment offset at which a frame was overwritten

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impl<F> WriteTransaction<F>

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pub fn savepoint(&mut self) -> usize

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pub fn lock(&mut self) -> TxGuardShared<'_, F>

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pub fn into_lock_owned(self) -> TxGuardOwned<F>

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pub fn reset(&mut self, savepoint_id: usize)

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pub fn index_page_iter(&self) -> impl Iterator<Item = u32> + '_

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pub fn not_empty(&self) -> bool

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pub fn downgrade(self) -> ReadTransaction<F>

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pub fn is_commited(&self) -> bool

Trait Implementations§

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impl<F> Deref for WriteTransaction<F>

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type Target = ReadTransaction<F>

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<F> DerefMut for WriteTransaction<F>

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

Auto Trait Implementations§

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impl<F> !Freeze for WriteTransaction<F>

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impl<F> !RefUnwindSafe for WriteTransaction<F>

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impl<F> Send for WriteTransaction<F>
where F: Sync + Send,

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impl<F> Sync for WriteTransaction<F>
where F: Sync + Send,

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impl<F> Unpin for WriteTransaction<F>

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impl<F> !UnwindSafe for WriteTransaction<F>

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