Enum Freelist 

#[non_exhaustive]
#[repr(u8)]
pub enum Freelist {
    None = 0,
    Optimistic = 1,
    Pessimistic = 2,
}

The freelist configuration for the ARENA.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None = 0

Disable freelist, once main memory is consumed out, then this ARENA cannot allocate anymore.

Optimistic = 1

A lock-free linked list which ordered by segment size (descending), when the main memory is consumed out, the following allocation will just use the head (largest segment) from freelist.

Pessimistic = 2

A lock-free linked list which ordered by segment size (ascending), when the main memory is consumed out, the following allocation will find the most suitable segment from freelist.

Trait Implementations

impl Clone for Freelist

fn clone(&self) -> Freelist

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Freelist

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

Formats the value using the given formatter.

impl Default for Freelist

fn default() -> Freelist

Returns the “default value” for a type.

impl Hash for Freelist

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 Freelist

fn eq(&self, other: &Freelist) -> 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<u8> for Freelist

type Error = UnknownFreelist

The type returned in the event of a conversion error.

fn try_from(value: u8) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for Freelist

impl Eq for Freelist

impl StructuralPartialEq for Freelist