Struct DeltaTracker 

pub struct DeltaTracker { /* private fields */ }

Approach 2: Delta-based tracker.

Tracks CPU deltas between refresh calls. Similar to how top works.

Implementations

impl DeltaTracker

pub fn new() -> Self

pub fn get_cpu_percent(&mut self, pid: i32) -> Option<CpuPercent>

Get CPU percentage for a process since last call. First call returns None (establishing baseline).

pub fn get_tree_cpu_percent( &mut self, root_pid: i32, ) -> Option<(CpuPercent, u64, u32)>

Get CPU percentage for a process tree.

Returns partial result with 0% CPU for processes without a baseline. Returns None only if the process tree is empty (root doesn’t exist).

pub fn prune_dead(&mut self)

Remove stale entries for dead processes.

Trait Implementations

impl Debug for DeltaTracker

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

Formats the value using the given formatter.

impl Default for DeltaTracker

fn default() -> Self

Returns the “default value” for a type.