Struct CoreClass 

pub struct CoreClass {
    pub name: Box<str>,
    pub logical: Vec<u16>,
    pub physical_count: Option<u16>,
}

A class of logical CPUs that differ in kind, not just in load.

Apple Silicon has performance and efficiency cores; big.LITTLE ARM machines have the same split under other names. It matters for reading a per-core view: four efficiency cores at 90% and four performance cores idle is a machine doing very little, and the opposite is a machine working hard — the same eight numbers.

The name comes from the platform (hw.perflevelN.name on macOS) rather than from a table here, because inventing the vocabulary would mean guessing at hardware this code has never seen.

Fields

name: Box<str>

What the platform calls it, e.g. Performance or Efficiency.

logical: Vec<u16>

The logical CPUs in this class, as indices into CpuSnapshot::per_core.

Indices rather than a count, because a renderer needs to know which cores they are to colour or group them, and a count would force it to assume the classes are contiguous.

physical_count: Option<u16>

Physical cores in this class, where the platform reports it separately.

Implementations

impl CoreClass

pub fn len(&self) -> usize

How many logical CPUs this class holds.

pub fn is_empty(&self) -> bool

Whether the class holds no CPUs, which a platform should never report.

Trait Implementations

impl Clone for CoreClass

fn clone(&self) -> CoreClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CoreClass

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

Formats the value using the given formatter.

impl Eq for CoreClass

impl PartialEq for CoreClass

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CoreClass