Struct bitcasky_database::data_storage::mmap_data_storage::MmapDataStorage

pub struct MmapDataStorage {
    pub offset: usize,
    pub capacity: usize,
    pub read_value_times: u64,
    pub write_times: u64,
    /* private fields */
}

Fields

offset: usize

capacity: usize

read_value_times: u64

write_times: u64

Implementations

impl MmapDataStorage

pub fn new( storage_id: StorageId, data_file: File, write_offset: usize, capacity: usize, formatter: Arc<BitcaskFormatter>, options: Arc<BitcaskOptions> ) -> Result<Self>

Trait Implementations

impl DataStorageReader for MmapDataStorage

fn read_value( &mut self, row_offset: usize ) -> Result<Option<TimedValue<Vec<u8>>>>

Read value from this storage at row_offset

fn read_next_row(&mut self) -> Result<Option<RowToRead>>

Read next value from this storage

fn seek_to_end(&mut self) -> Result<()>

fn offset(&self) -> usize

impl DataStorageWriter for MmapDataStorage

fn write_row<V: Deref<Target = [u8]>>( &mut self, row: &RowToWrite<'_, V> ) -> Result<RowLocation>

fn rewind(&mut self) -> Result<()>

fn flush(&mut self) -> Result<()>

impl Debug for MmapDataStorage

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

Formats the value using the given formatter.