Enum IndexBlockFormat

#[repr(u16)]
pub enum IndexBlockFormat {
    AddressesThenOffsets = 0,
}

The index format of a tiered accounts file.

Variants

AddressesThenOffsets = 0

This format optimizes the storage size by storing only account addresses and block offsets. It skips storing the size of account data by storing account block entries and index block entries in the same order.

Implementations

impl IndexBlockFormat

pub fn write_index_block( &self, file: &TieredStorageFile, index_entries: &[AccountIndexWriterEntry<'_, impl AccountOffset>], ) -> TieredStorageResult<usize>

Persists the specified index_entries to the specified file and returns the total number of bytes written.

pub fn get_account_address<'a>( &self, mmap: &'a Mmap, footer: &TieredStorageFooter, index_offset: IndexOffset, ) -> TieredStorageResult<&'a Pubkey>

Returns the address of the account given the specified index.

pub fn get_account_offset<Offset: AccountOffset>( &self, mmap: &Mmap, footer: &TieredStorageFooter, index_offset: IndexOffset, ) -> TieredStorageResult<Offset>

Returns the offset to the account given the specified index.

pub fn entry_size<Offset: AccountOffset>(&self) -> usize

Returns the size of one index entry.

Trait Implementations

impl Clone for IndexBlockFormat

fn clone(&self) -> IndexBlockFormat

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IndexBlockFormat

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

Formats the value using the given formatter.

impl Default for IndexBlockFormat

fn default() -> IndexBlockFormat

Returns the “default value” for a type.

impl From<IndexBlockFormat> for u16

fn from(enum_value: IndexBlockFormat) -> Self

Converts to this type from the input type.

impl Hash for IndexBlockFormat

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for IndexBlockFormat

fn eq(&self, other: &IndexBlockFormat) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<u16> for IndexBlockFormat

type Error = TryFromPrimitiveError<IndexBlockFormat>

The type returned in the event of a conversion error.

fn try_from(number: u16) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for IndexBlockFormat

const NAME: &'static str = "IndexBlockFormat"

type Primitive = u16

type Error = TryFromPrimitiveError<IndexBlockFormat>

fn try_from_primitive( number: Self::Primitive, ) -> Result<Self, TryFromPrimitiveError<Self>>

impl Copy for IndexBlockFormat

impl Eq for IndexBlockFormat

impl StructuralPartialEq for IndexBlockFormat