LockManager

sochdb_core::concurrency

Struct LockManager 

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pub struct LockManager { /* private fields */ }
Expand description

Hierarchical lock manager with table and row-level locks

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impl LockManager

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pub fn new() -> Self

Create a new lock manager

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pub fn lock_table( &self, table_id: TableId, mode: IntentLock, txn_id: TxnId, ) -> LockResult

Acquire an intent lock on a table

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pub fn unlock_table(&self, table_id: TableId, txn_id: TxnId) -> bool

Release a table-level lock

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pub fn lock_row( &self, table_id: TableId, row_id: RowId, mode: LockMode, txn_id: TxnId, ) -> LockResult

Acquire a row-level lock

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pub fn unlock_row( &self, table_id: TableId, row_id: RowId, txn_id: TxnId, ) -> bool

Release a row-level lock

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pub fn release_all(&self, txn_id: TxnId) -> usize

Release all locks held by a transaction

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pub fn enter_epoch(&self) -> u64

Enter a new epoch (for epoch-based reclamation)

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pub fn current_epoch(&self) -> u64

Get current epoch

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pub fn stats(&self) -> &LockManagerStats

Get statistics

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impl Default for LockManager

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.