Struct LockFreeVersion

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pub struct LockFreeVersion {
    pub storage: ValueStorage,
    pub txn_id: u64,
    pub commit_ts: AtomicU64,
    pub next: AtomicPtr<LockFreeVersion>,
}

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Expand description

Version of a key-value pair for lock-free access

Uses inline storage for small values to eliminate heap allocation and improve cache locality. Most database values (80%+) fit inline.

Fields§

§storage: ValueStorage

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

The value with optimized inline storage

§txn_id: u64

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Transaction that created this version

§commit_ts: AtomicU64

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Commit timestamp (0 = uncommitted)

§next: AtomicPtr<LockFreeVersion>

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Next version in chain (older)

Implementations§

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impl LockFreeVersion

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pub fn new_from_slice(value: Option<&[u8]>, txn_id: u64) -> Self

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Create a new uncommitted version with value slice (zero-copy for inline)

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pub fn new(value: Option<Vec<u8>>, txn_id: u64) -> Self

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Create a new uncommitted version (legacy API - accepts owned Vec)

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

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get the value as bytes (zero-copy for inline values)

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pub fn value_cloned(&self) -> Option<Vec<u8>>

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get the value as owned Vec (for compatibility)

Note: Prefer get_value() to avoid allocation

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pub fn is_committed(&self) -> bool

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Check if committed

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pub fn get_commit_ts(&self) -> u64

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get commit timestamp

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pub fn set_commit_ts(&self, ts: u64)

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Set commit timestamp

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pub fn is_inline(&self) -> bool

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Check if value is stored inline (for diagnostics)

Trait Implementations§

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impl Debug for LockFreeVersion

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for LockFreeVersion

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where T: 'static + ?Sized,

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impl<T> From<T> for T

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fn from(t: T) -> T

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