Enum RelocationNeed 

pub enum RelocationNeed {
    Nothing,
    ArenaFull,
    UnderPressure {
        capacity: u64,
        page_size: u64,
    },
}

Whether a relocation is wanted, before the bytes the device holds are known: plain data, so the caller can gather those bytes from every stream without anything borrowed.

Variants

Nothing

Nothing is outdated, the last relocation found nothing to move and nothing changed since, or the device reports no capacity to judge by.

ArenaFull

Every page size the pools track is taken.

UnderPressure

Wanted once the next page of page_size would leave a device of capacity bytes less than another page of room.

Fields

capacity: u64

What the device holds in total.

page_size: u64

The size of the next page.

Implementations

impl RelocationNeed

pub fn reason(self, allocated: impl FnOnce() -> u64) -> Option<RelocationReason>

Why to relocate now, if at all, on a device whose memories hold allocated bytes. Only asked when the answer depends on it.

Trait Implementations

impl Clone for RelocationNeed

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 RelocationNeed

impl Debug for RelocationNeed

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

Formats the value using the given formatter.

impl Eq for RelocationNeed

impl PartialEq for RelocationNeed

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RelocationNeed