Struct ThreadPoolHooks 

pub struct ThreadPoolHooks { /* private fields */ }

Worker and task lifecycle hooks shared by thread-pool implementations.

Hooks are intentionally observational. They run on worker threads and receive the stable worker index that triggered the event. Panics raised by a hook are caught and ignored so instrumentation cannot kill a worker thread or corrupt executor accounting.

Implementations

impl ThreadPoolHooks

pub fn new() -> Self

Creates an empty hook set.

Returns

A hook set with no callbacks installed.

pub fn before_worker_start<F>(self, hook: F) -> Self

where F: Fn(usize) + Send + Sync + 'static,

Installs a callback invoked when a worker thread starts.

Parameters

• hook - Callback receiving the stable worker index.

Returns

This hook set for fluent configuration.

pub fn after_worker_stop<F>(self, hook: F) -> Self

where F: Fn(usize) + Send + Sync + 'static,

Installs a callback invoked before a worker thread exits.

Parameters

• hook - Callback receiving the stable worker index.

Returns

This hook set for fluent configuration.

pub fn before_task<F>(self, hook: F) -> Self

where F: Fn(usize) + Send + Sync + 'static,

Installs a callback invoked before each job is run.

Parameters

• hook - Callback receiving the stable worker index.

Returns

This hook set for fluent configuration.

pub fn after_task<F>(self, hook: F) -> Self

where F: Fn(usize) + Send + Sync + 'static,

Installs a callback invoked after each job is run.

Parameters

• hook - Callback receiving the stable worker index.

Returns

This hook set for fluent configuration.

Trait Implementations

impl Clone for ThreadPoolHooks

fn clone(&self) -> ThreadPoolHooks

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThreadPoolHooks

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

Formats hook presence without exposing callback internals.

impl Default for ThreadPoolHooks

fn default() -> ThreadPoolHooks

Returns the “default value” for a type.