Struct bitcoinleveldb_version::Compaction

pub struct Compaction { /* private fields */ }

| A Compaction encapsulates information | about a compaction. |

Implementations

impl Compaction

pub fn new(options: *const Options, level: i32) -> Self

pub fn is_trivial_move(&self) -> bool

| Is this a trivial compaction that can be | implemented by just moving a single input | file to the next level (no merging or | splitting)

pub fn add_input_deletions(&mut self, edit: *mut VersionEdit)

| Add all inputs to this compaction as | delete operations to *edit. |

pub fn is_base_level_for_key(&mut self, user_key_: &Slice) -> bool

| Returns true if the information we have | available guarantees that the compaction is | producing data in “level+1” for which no data | exists in levels greater than “level+1”.

pub fn should_stop_before(&mut self, internal_key_: &Slice) -> bool

| Returns true iff we should stop building | the current output before processing | “internal_key”. |

pub fn release_inputs(&mut self)

| Release the input version for the compaction, | once the compaction is successful. |

pub fn level(&self) -> i32

| Return the level that is being compacted. | | Inputs from “level” and “level+1” will | be merged to produce a set of “level+1” | files. |

pub fn edit(&mut self) -> *mut VersionEdit

| Return the object that holds the edits | to the descriptor done by this compaction. |

pub fn num_input_files(&self, which: i32) -> i32

| “which” must be either 0 or 1 |

pub fn input(&self, which: i32, i: i32) -> *mut FileMetaData

| Return the ith input file at “level()+which” | (“which” must be 0 or 1). |

pub fn max_output_file_size(&self) -> u64

| Maximum size of files to build during | this compaction. |

Trait Implementations

impl Drop for Compaction

fn drop(&mut self)

Executes the destructor for this type.