Enum BytePageSize 

pub enum BytePageSize {
    Size4 = 0,
    Size8 = 1,
    Size16 = 2,
    Size24 = 3,
    Size32 = 4,
    Size48 = 5,
    Size64 = 6,
    Unset = 7,
}

Capacity category used when allocating BytePage storage.

Variants

Size4 = 0

A 4 KiB page.

Size8 = 1

An 8 KiB page.

Size16 = 2

A 16 KiB page.

Size24 = 3

A 24 KiB page.

Size32 = 4

A 32 KiB page.

Size48 = 5

A 48 KiB page.

Size64 = 6

A 64 KiB page.

Unset = 7

No fixed page category.

Buffers of this category are sized on demand and never returned to the page cache. It cannot be used as the page size of BytePages.

Implementations

impl BytePageSize

pub const fn capacity(self) -> usize

Returns the page capacity in bytes.

A page is allocated together with its header, the capacity is the category size minus the header, so the allocation is exactly the category size and fits the allocator’s size classes.

pub const fn half_capacity(self) -> usize

Returns the recommended write-buffer threshold for this page size.

This is half of the category size, but at most 16 KiB.

Trait Implementations

impl Clone for BytePageSize

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BytePageSize

impl Debug for BytePageSize

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

Formats the value using the given formatter.

impl Default for BytePageSize

fn default() -> Self

Returns the “default value” for a type.

impl Eq for BytePageSize

impl PartialEq for BytePageSize

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BytePageSize