Struct ReadRequest 

pub struct ReadRequest {
    pub id: RequestId,
    pub key: ResourceKey,
    pub class: Class,
    pub handle: Handle,
    pub run: PageRun,
    pub lba: u32,
    pub sectors: u32,
    pub deadline_ticks: u32,
    pub contiguous_with: Option<RequestId>,
}

One read for the transport to perform: sectors sectors from lba into run of the pool named by handle, sector n landing at page run.first_page + n.

Fields

id: RequestId

Identity to report the outcome against.

key: ResourceKey

The resource being read.

class: Class

Priority class at submission (see Host::promote).

handle: Handle

Allocation the sectors land in.

run: PageRun

The pages of that allocation.

lba: u32

First sector on the disc.

sectors: u32

Sector count.

deadline_ticks: u32

Ticks until the data is needed, as the engine’s wanted entry said (u32::MAX when unknown). Earliest deadline first inside a class.

contiguous_with: Option<RequestId>

An in-flight request that ends exactly at lba. A transport can chain the two without a seek.

Trait Implementations

impl Clone for ReadRequest

fn clone(&self) -> ReadRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadRequest

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

Formats the value using the given formatter.

impl PartialEq for ReadRequest

fn eq(&self, other: &ReadRequest) -> 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 Copy for ReadRequest

impl Eq for ReadRequest

impl StructuralPartialEq for ReadRequest