Enum ResizeAlgorithm

pub enum ResizeAlgorithm {
    Monero,
    FixedBytes(NonZeroUsize),
    Percent(f32),
}

The function/algorithm used by the database when resizing the memory map.

Variants

Monero

Uses monero.

FixedBytes(NonZeroUsize)

Uses fixed_bytes.

Percent(f32)

Uses percent.

Implementations

impl ResizeAlgorithm

pub const fn new() -> Self

Returns Self::Monero.

assert!(matches!(ResizeAlgorithm::new(), ResizeAlgorithm::Monero));

pub fn resize(&self, current_size_bytes: usize) -> NonZeroUsize

Maps the self variant to the free functions in crate::resize.

This function returns the new memory map size in bytes.

Trait Implementations

impl Clone for ResizeAlgorithm

fn clone(&self) -> ResizeAlgorithm

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ResizeAlgorithm

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

Formats the value using the given formatter.

impl Default for ResizeAlgorithm

fn default() -> Self

Calls Self::new.

assert_eq!(ResizeAlgorithm::new(), ResizeAlgorithm::default());

impl<'de> Deserialize<'de> for ResizeAlgorithm

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ResizeAlgorithm

fn eq(&self, other: &ResizeAlgorithm) -> 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 PartialOrd for ResizeAlgorithm

fn partial_cmp(&self, other: &ResizeAlgorithm) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ResizeAlgorithm

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ResizeAlgorithm

impl StructuralPartialEq for ResizeAlgorithm

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes

Size for each variant:

• Monero: 0 bytes
• FixedBytes: 12 bytes
• Percent: 4 bytes